超声波测距仪外文翻译
激光测距仪外文翻译
Laser rangefinderA long range laser rangefinder is capable of measuring distance up to 20 km; mounted on a tripod with an angular mount. The resulting system also provides azimuth and elevation measurements.A laser rangefinder is a device which uses a laser beam to determine the distance to an object. The most common form of laser rangefinder operates on the time of flight principle by sending a laser pulse in a narrow beam towards the object and measuring the time taken by the pulse to be reflected off the target and returned to the sender. Due to the high speed of light, this technique is not appropriate for high precision sub-millimeter measurements, where triangulation and other techniques are often used.PulseThe pulse may be coded to reduce the chance that the rangefinder can be jammed. It is possible to use Doppler effect techniques to judge whether the object is moving towards or away from the rangefinder, and if so how fast.PrecisionThe precision of the instrument is determined by the rise or fall time of the laser pulse and the speed of the receiver. One that uses very sharp laser pulses and has a very fast detector can range an object to within a few millimeters.RangeDespite the beam being narrow, it will eventually spread over long distances due to the divergence of the laser beam, as well as due to scintillation and beam wander effects, caused by the presence of air bubbles in the air acting as lenses ranging in size from microscopic to roughly half the height of the laser beam's path above the earth. These atmospheric distortions coupled with the divergence of the laser itself and with transverse winds that serve to push the atmospheric heat bubbles laterally may combine to make it difficult to get an accurate reading of the distance of an object, say, beneath some trees or behind bushes, or even over long distances of more than 1 km in open and unobscured desert terrain.Some of the laser light might reflect off leaves or branches which are closer thanthe object, giving an early return and a reading which is too low. Alternatively, over distances longer than 1200 ft (365 m), the target, if in proximity to the earth, may simply vanish into a mirage, caused by temperature gradients in the air in proximity to the heated surface bending the laser light. All these effects have to be taken into account.CalculationThe distance between point A and B is given byD=ct/2where c is the speed of light in the atmosphere and t is the amount of time for the round-trip between A and B.where is the delay which made by the light traveling and is the angular frequency of optical modulation.Then substitute the values in the equation D=ct/2,D=1/2 ct=1/2 c·φ/ω=c/(4πf) (Nπ+Δφ)=c/4f (N+ΔN)=U(N+)in this equation, U stands for the unit length.Δφ stands for the delay part which does not fulfill π.ΔN stands the decimal value.DiscriminationSome instruments are able to determine multiple returns, as above. These instruments use waveform-resolving detectors, which means they detect the amount of light returned over a certain time, usually very short. The waveform from a laser pulse that hits a tree and then the ground would have two peaks. The first peak would be the distance to the tree, and the second would be the distance to the ground.Using wavefront sensing, it is possible to determine both the closest and the farthest object at a given point. This makes it possible for aircraft-mounted instruments to see "through" dense canopies[clarification needed Please explain how lasers see through canopies]and other semi-reflective surface such as the ocean, leading to many applications for airborne instruments such as:1. Creating "bare earth" topographic maps - removing all trees2. Creating vegetation thickness maps3. Bathymetry(measuring topography under the ocean)4. Forest firehazardTechnologiesTime of flight - this measures the time taken for a light pulse to travel to the target and back. With the speed of light known, and an accurate measurement of the time taken, the distance can be calculated. Many pulses are fired sequentially and the average response is most commonly used. This technique requires very accurate sub-nanosecond timing circuitry.Multiple frequency phase-shift- this measures the phase shift of multiple frequencies on reflection then solves some simultaneous equations to give a final measure.Interferometry - the most accurate and most useful technique for measuring changes in distance rather than absolute distances.ApplicationsMilitaryAn American soldier with a GVS-5 laser rangefinder.A Dutch ISAF sniper team displaying their Accuracy International AWSM .338 Lapua Magnum rifle and Leica/Vectronix VECTOR IV laser rangefinder binoculars. Rangefinders provide an exact distance to targets located beyond the distance of point-blank shooting to snipers and artillery. They can also be used for military reconciliation and engineering.Handheld military rangefinders operate at ranges of 2 km up to 25 km and are combined with binoculars or monoculars. When the rangefinder is equipped with a digital magnetic compass (DMC) and inclinometer it is capable of providing magnetic azimuth, inclination, and height (length) of targets. Some rangefinders can also measure a target's speed in relation to the observer. Some rangefinders have cable or wireless interfaces to enable them to transfer their measurement(s) data to other equipment like fire control computers. Some models also offer the possibility to use add-on night vision modules. Most handheld rangefinders use standard or rechargeable batteries.The more powerful models of rangefinders measure distance up to 25 km and arenormally installed either on a tripod or directly on a vehicle or gun platform. In the latter case the rangefinder module is integrated with on-board thermal, night vision and daytime observation equipment. The most advanced military rangefinders can be integrated with computers.To make laser rangefinders and laser-guided weapons less useful against military targets, various military arms may have developed laser-absorbing paint for their vehicles. Regardless, some objects don't reflect laser light very well and using a laser rangefinder on them is difficult.3-D ModellingThis LIDAR scanner may be used to scan buildings, rock formations, etc., to produce a 3D model. The LIDAR can aim its laser beam in a wide range: its head rotates horizontally, a mirror flips vertically. The laser beam is used to measure the distance to the first object on its path.Laser rangefinders are used extensively in 3-D object recognition, 3-D object modelling, and a wide variety of computer vision-related fields. This technology constitutes the heart of the so-called time-of-flight3D scanners. In contrast to the military instruments described above, laser rangefinders offer high-precision scanning abilities, with either single-face or 360-degree scanning modes.A number of algorithms have been developed to merge the range data retrieved from multiple angles of a single object to produce complete 3-D models with as little error as possible. One of the advantages that laser rangefinders offer over other methods of computer vision is that the computer does not need to correlate features from two images to determine depth information as in stereoscopic methods.Laser rangefinders used in computer vision applications often have depth resolutions of tenths of millimeters or less. This can be achieved by using triangulation or refraction measurement techniques as opposed to the time of flight techniques used in LIDAR.ForestryLaser rangefinder TruPulse used for forest inventories (in combination with Field-Map technology)Special laser rangefinders are used in forestry. These devices have anti-leaf filtersand work with reflectors. Laser beam reflects only from this reflector and so exact distance measurement is guaranteed. Laser rangefinders with anti-leaf filter are used for example for forest inventories.SportsLaser rangefinders may be effectively used in various sports that require precision distance measurement, such as golf, hunting, and archery. Some of the more popular manufacturers are: Opti-logic Corporation, Bushnell, LaserTechnology, Trimble, Leica, Newcon Optik, Nikon, and Swarovski Optik.Industry production processesAn important application is the use of laser Range finder technology during the automation of stock management systems and production processes in steel industry.SafetyLaser rangefinders for consumers are laser class 1 devices and therefore are considered eyesafe. Some laser rangefinders for military use exceed the laser class 1 energy levels.HistoryDevelopment of the methods used in modern printed circuit boards started early in the 20th century. In 1903, a German inventor, Albert Hanson, described flat foil conductors laminated to an insulating board, in multiple layers. Thomas Edison experimented with chemical methods of plating conductors onto linen paper in 1904. Arthur Berry in 1913 patented a print-and-etch method in Britain, and in the United States Max Schoop obtained a patent[1] to flame-spray metal onto a board through a patterned mask. Charles Durcase in 1927 patented a method of electroplating circuit patterns.The Austrian Jewish engineer Paul Eisler invented the printed circuit while working in England around 1936 as part of a radio set. Around 1943 the USA began to use the technology on a large scale to make proximity fuses for use in World War II . After the war, in 1948, the USA released the invention for commercial use. Printed circuits did not become commonplace in consumer electronics until the mid-1950s, after the Auto-Sembly process was developed by the United States Army.Before printed circuits (and for a while after their invention), point-to-point construction was used. For prototypes, or small production runs, wire wrap or turret board can be more efficient. Predating the printed circuit invention, and similar in spirit, was John Sargrove's 1936–1947 Electronic Circuit Making Equipment (ECME) which sprayed metal onto a Bakelite plastic board. The ECME could produce 3 radios per minute.During World War II, the development of the anti-aircraft proximity fuse required an electronic circuit that could withstand being fired from a gun, and could be produced in quantity. The Centralab Division of Globe Union submitted a proposal which met the requirements: a ceramic plate would be screenprinted with metallic paint for conductors and carbon material for resistors, with ceramic disc capacitors and subminiature vacuum tubes soldered in place.Originally, every electronic component had wire leads, and the PCB had holes drilled for each wire of each component. The components' leads were then passed through the holes and soldered to the PCB trace. This method of assembly is called through-hole construction. In 1949, Moe Abramson and Stanislaus F. Danko of the United States Army Signal Corps developed the Auto-Sembly process in which component leads were inserted into a copper foil interconnection pattern and dip soldered. The patent they obtained in 1956 was assigned to the U.S. Army. [4] With the development of board lamination and etching techniques, this concept evolved into the standard printed circuit board fabrication process in use today. Soldering could be done automatically by passing the board over a ripple, or wave, of molten solder in a wave-soldering machine. However, the wires and holes are wasteful since drilling holes is expensive and the protruding wires are merely cut off.In recent years, the use of surface mount parts has gained popularity as the demand for smaller electronics packaging and greater functionality has grown.激光测距仪激光测距仪是一种设备，它采用了激光束来确定对象的距离。
检测仪器中英文对照表
IN-Process quality control(IPQC)
色差仪
Color difference meter
三棱尺
three edges straigjht edge
水位仪
Water level
四棱尺
four edges straigjht edge
水平仪
Level ruler
条式和框式水平仪
数字高度测量仪
Digital height gauge
数据输入
Data input
表面处理仪器
Surface finish tester
轮廓记录器
Profile recorder
内/外径千分尺
Inside/outer micrometer
仪器的计量特性
Metrological characteristic of the instrument
接地电阻读数表
Earthing resistance reader
残余轮廓
residual profile
放大镜
Magnifying glass
触针式仪器
stylus instrument
铅锤
Plummet
感应位移数字存储触针式量仪
displacement sensitive,digitally storing stylus instrument
拾取单元
Tracing element
压力计
Pressure gauge
针尖
Stylus tip
电子卡尺
Digital caliper
转换器
transducer
深度千分尺
Depth gauge
超声测距相关毕业设计外文资料翻译
毕业设计(论文)外文资料翻译系（院）：电子与电气工程学院专业：电气工程及其自动化姓名：学号：外文出处：United States Patent 5442592(用外文写)附件： 1.外文资料翻译译文；2.外文原文。
指导教师评语：签名：（手写签名）年月日注：请将该封面与附件装订成册。
外文资料翻译译文超声波测距仪文件类型和数目：美国专利5442592摘要：提出了一种可以抵消温度的影响和湿度的变化的新型超声波测距仪，包括测量单元和参考资料。
在每一个单位，重复的一系列脉冲的产生，每有一个重复率，直接关系到各自之间的距离，发射机和接收机。
该脉冲序列提供给各自的计数器，计数器的产出的比率，是用来确定被测量的距离。
出版日期：1995年8月15日主审查员：罗保.伊恩j.一、背景发明本发明涉及到仪器的测量距离，最主要的是，这种仪器，其中两点之间传输超声波。
精密机床必须校准。
在过去，这已经利用机械设备来完成，如卡钳，微米尺等。
不过，使用这种装置并不利于本身的自动化技术发展。
据了解，两点之间的距离可以通过测量两点之间的行波传播时间的决定。
这样的一个波浪型是一种超声波，或声波。
当超声波在两点之间通过时，两点之间的距离可以由波的速度乘以测量得到的在分离的两点中波中转的时间。
因此，本发明提供仪器利用超声波来精确测量两点之间的距离对象。
当任意两点之间的介质是空气时，声音的速度取决于温度和空气的相对湿度。
因此，它是进一步的研究对象，本次的发明，提供的是独立于温度和湿度的变化的新型仪器。
二、综述发明这项距离测量仪器发明是根据上述的一些条件和额外的一些基础原则完成的，其中包括一个参考单位和测量单位。
参考和测量单位是相同的，每个包括一个超声波发射机和一个接收机。
间隔发射器和接收器的参考值是一个固定的参考距离，而间距之间的发射机和接收机的测量单位是有最小距离来衡量的。
在每一个单位，发射器和接收器耦合的一个反馈回路，它会导致发射器产生超声脉冲，这是由接收器和接收到一个电脉冲然后被反馈到发射机转换，从而使重复系列脉冲的结果。
超声波测距report
基于AT89S52的超声波测距系统08级通信班巫文蔚摘要：本文介绍了AT89S52单片机的性能和特点，并在分析了超声波测距原理的基本上，指出了设计测距仪的思路和所需考虑的问题，给出了实现超声波测距方案的软、硬件设计系统框图。
该设计系统经校正后，其测量精度可达0.2米。
Abstract:This paper introduces the characteristics and properties of AT89S52 MCU, and analyzes the principle of basically ultrasonic ranging, points out the design ideas and rangefinder needed to consider the problem.This paper presents ultrasonic ranging scheme of software and hardware design of the system frame. The measurement precision can reach 0.2 meters via correction.超声波测距主要应用于倒车雷达、建筑施工工地以及一些工业现场，例如：液位、井深、管道长度等场合。
目前国内一般使用专用集成电路设计超声波测距仪，但是专用集成电路的成本很高，并且没有显示，操作使用很不方便。
本文介绍一种以AT89S52单片机为核心的低成本、高精度、微型化数字显示超声波测距仪的硬件电路和软件设计方法。
实际使用证明该仪器工作稳定，性能良好。
1 超声波测距原理超声波测距是通过不断检测超声波发射后遇到障碍物所反射的回波，从而测出发射和接收回波的时间差t,然后求出距离S=Ct/2，式中的C为超声波波速。
表1 声速与温度关系表由于超声波也是一种声波，其声速C与温度有关，表1列出了几种不同温度下的声速。
超声波测距系统外文文献翻译
=======大学本科生毕业设计外文文献及中文翻译文献题目： ULTRASONIC RANGING SYSTEM 文献出处： United States Patent译文题目：超声波测距系统学生：指导教师：专业班级：自动化11-4学号： 110601140416电气信息工程学院2014年5月1日超声波测距系统摘要超声波测距系统，是指选择性地激励一个变压器，使之产生换能器驱动信号。
超声换能器发射的超声波脉冲用于响应驱动信号然后接收到一个在超声波信号发出之后的回波信号。
分路开关接在变压器的绕组上，当超声波信号的传输在允许的近距离范围内达到一个稳定的等级，分路开关选择性的闭合来阻止蜂鸣器报警。
第1章发明背景像在宝丽来相机中应用的可用范围测试系统，它们都是准确而且可靠的，但都不适用于近距离测距，举个例子，2到3英寸的距离内就不适用，所以他们在9英寸甚至更远的距离测距是可靠的。
它们可以应用在很多的应用程序中，但不适用于可移动机器人领域内。
机器人通常必须通过门口只有两三英寸的间隙，如果当可移动机器人被操作于避障模式下通过狭小空间，可能机器人的规避路径过于狭窄，此外,规避动作应该使偏指定的路径距离最小化。
近距离测距不用于超声波系统的一个原因是，近距离输出脉冲输出太长以至于它重叠在回波脉冲上，即使输出脉冲缩短,输出脉冲仍然重叠回波脉冲，因为声音紧跟着输出脉冲。
备中产生的回波信号脉冲的范围为100毫伏，但设置传感器响应所必需的电路回声脉冲是大约150伏到300伏之间。
因此即使是最小的声波也会盖过回声信号。
事实上,dual-diode钳位电路用于将150伏降低到二极管的击穿电压，即0.7伏特。
但是这700毫伏足以盖过100毫伏的回波信号。
目前系统需要50毫秒将300伏特的峰值发射电压降到0.7伏特，且额外需要500到600毫秒的时间将它稳定在1毫伏范围。
第2章发明总结本发明可以提供一种改进的超声波测距系统。
本发明也可以提供一个改进的多通道超声波测距系统。
外文翻译正文
H8/300L超声波测距仪（原文出处：第1页-第15页）介绍该应用说明介绍了一种使用H8/38024 SLP MCU的测距仪。
由单片机产生40KHz 方波，通过超声波传感器发射出去。
反射的超声波被另外一个传感器接收。
有效距离为6cm到200cm。
1.理论1.1概况在这篇应用说明中，H8/38024F微处理器是作为目标设备被使用的。
由于简单的可移植性，超声波测距仪使用的软件为C语言。
超声波是频率高于可听音的一切高于20kHz的声波。
用于医疗诊断和影像的超声波，频率延长和超过了10兆赫兹，高的频率有短的波长，这使得超声波从物体反射回来更容易。
不幸的是，极高的频率难以产生和测量。
对超声波的检测与测量主要是通过压电式接收机进行的。
超音波普遍应用于防盗系统、运动探测器和车载测距仪。
其他应用包括医疗诊断(人体成像)，清洁(去除油脂和污垢)，流量计(利用多普勒效应)，非破坏性试验(检测材料缺陷)，焊接等各个方面。
1.2软件实施距离的计算要测量超声波传感器接收到回波的时间。
理想的被测对象应该有一个大的面积而且不吸收超声波。
在这个应用说明中使用了38024f的CPU电路板。
图1展示超声波测距仪的工作原理，tmofh (脚63 )是用来传送0.5ms的40kHz的超声波，irq0 ( pin72 ) 是用来探测反射波的。
发送超声波后，计时器C开始追踪Timer Counter C (TCC)的计数数目，以计算物体的距离。
图1.测距仪工作原理1.2.1 发射超声波定时器F是一个具有内置式输出比较功能16位计数器，它还可以用来作为两个独立的8位定时器FH和FL，这里，定时器F是作为两个独立的8位定时器使用。
计时器的FL被初始化为产生中断，而FH在比较匹配发生时触发了tmofh的输出电平。
表1 计时器F的时钟选择对于为定时器的FL，选定内部时钟ø/32。
输出比较寄存器FL装载数据初值为H’FF 。
因此,外部定时器每1.67msec 产生一个中断，计算如下：/2ø晶振频率=，计时器FL 内部时钟周期=322⨯晶振频率=64MHz 8304.9=153.6kHz 中断周期=256kHz6.1531⨯=1.67msec 每隔65msec 开始发射一次超声波，计时器FL 须中断近39次( 65msec / 1.67msec = 39 )，才开始传送。
测量工具中英文对照表
heodolite 经纬仪Water Level 水位仪Level Ruler 水平尺Casing gradienterCoating thickness Measurer 涂层测厚仪Ultrasonic thickness measurer 超声波测厚仪Ultrasonic crack detector 超声波裂纹测试仪Digital thermometer 数字温度计radiation thermometer 辐射温度计Gradient Reader 坡度读数器Electric spark leak hunter 电火花追踪器Volometer 万用表MegaOhmmeter 兆欧表Earthing resistance Reader 接地电阻读数表Plug gauge 圆柱塞规Magnifying glass 放大镜Plummet 铅锤Profile projector 投影仪Pin Gauge 针规(不知道和plug gauge 的区别在哪里,知道的请指正) Gauge block 块规Bore gauge 百分表A vernier caliper 游标卡尺Coordinate Measureing Machine(CMM) 三尺元Pressure gague寸压力计+电度厚度测试仪(Electroplating THK.Tester)转(扭)力仪(Twisting Meter)螺纹规(Thread Gauge)块规(Block Gauge)环规(Ring Gauge)力矩计(Torque Meter)塞规(Plug gage)高度仪(Altitude gauge)塞尺/间隙规(Clearance gauge)千分卡尺(Micrometer Calipers )“过” -- “不过”验规(通-止规) [go-no-go gauge] 游标卡尺(Vernier Caliper)电子卡尺(Digital caliper)深度千分尺(Depth Micrometer)销(针)规(Pin Gauge)投影仪(Projector )数字高度测量仪(Digital Height Gauge)表面处理测试仪(Surface Finish Tester)内/外径千分尺(Inside/outer Micrometer)洛(威)氏硬度仪[(HRC/HV) Hardness Tester)]温度计(Thermometer)孔规(Bore Gauge)电子称(Electric/digital Balance)三坐标测试仪 (CMM)万用表(Multimeter)1.刀口型直尺:knife straigjht edge2.刀口尺: knife straigjht edge3.三棱尺three edges straigjht edge4.四棱尺four edges straigjht edge5.条式和框式水平仪bar form and square levels6.合像水平仪 imaging level meter7铸铁平板 cast iron surface plate8.岩石平板 granite surface plate9.铸铁平尺cast iron straigjht edge10.钢平尺和岩石平尺steel and granite straigjht edge11.圆度仪 roundness measuring instrument12.电子水平仪electronic level meter13.表面粗糙度比较样块铸造表面 roughness comparison specimens cast surface14.表面粗糙度比较样块磨、车、铣、插及刨加工表面roughness comparison specimens-ground,turned,bored,milled,shape and planed15.表面粗糙度比较样块电火花加工表面roughness comparison specimens spark-erostion machining surfaces16.表面粗糙度比较样块抛光加工表面roughness comparison specimens pollshed surfaces17.接触式仪器的标称特性18.轮廓profiles19.轨迹轮廓 traced profile20.基准轮廓 reference profile21.总轮廓 total profile22.原始轮廓 primary profile23.残余轮廓residual profile24.触针式仪器stylus instrument25.感应位移数字存储触针式量仪displacement sensitive,digitally storing stylus instrument26.触针式仪器的部件stylus instrument components27.测量环measurement loop28.导向基准renfence guide29.驱动器drive unit30.测头(传感器)probe(pick-up)31.拾取单元tracing element32.针尖stylus tip33.转换器transducer34.放大器amplifier35.模/数转换器analog-to-digital converter36.数据输入data input37.数据输出data output38.轮廓滤波和评定profile filtering and evaluation39.轮廓记录器profile recorder40.仪器的计量特性metrological characteristics of the instrument41.静测力的变化change of static measuring force42.静态测力 static measuring force43.动态测量力 dynamic measuring force44.滞后hysteresis45.测头的测量范围 transmission function for the sine waves46.仪器的测量范围measuring range of the instrument47.模数转换器的量化步距quantization step of the ADC48.仪器分辨力 instrument resolution49.量程分辨力比range-to-resolution ratio50.测头线性偏差probe linearity deviation51.短波传输界限short-wave transmission limitation52.轮廓垂直成分传输 vertical profile component transmission53表面粗糙度比较样块抛丸、喷砂加工表面roughness comparison specimens shot blasted and blasted surfaces54产品结构几何量计术规范（GPS）geometrical product specifications(GPS)55表面结构 surface texture56接触式仪器的标称特性 nominal characteristics of contact instruments57公法线千分尺micrometer for mearsuring root tangent lenghths of gear teeth 58最大允许误差 maximum permissible error59圆柱直齿渐开线花键量规 gauges for straight cylindrical involute splines 60齿厚游标卡尺 Gear tooth verniercalipers61齿轮渐开线样板the involute master of gear62齿轮螺旋线样板 the helix master of gear63矩形花键量规 gauges for straight –sided splines64测量蜗杆 master worm65万能测齿仪 universal gear measuring instrument66万能渐开线检查仪universal involute measuring instrument67齿轮齿距测量仪gear circular pictch measuring instrument68万能齿轮测量机 Universal gear measuring machine69齿轮螺旋线测量仪gear helix measuring instrument70便携式齿轮齿距测量仪 manual gear circular pitch measuring instrument71便携式齿轮基节测量仪manual gear base pitch measuring instrument72立式滚刀测量仪vertical hob measuring instrument73齿轮双面啮合综合测量仪Gear dual-flank measuring instrument74齿轮单面啮合整体误差测量仪Gear single-flank meshing integrated error measuring instrument75梯形螺纹量规 gauges for metric trapezoidal screw threads76工作螺纹量规work gauges for metric trapezoidal screw threads77校对螺纹量规check gauges for metric trapezoidal screw threads78.梯形螺纹量规型式与尺寸 Types and dimensions of metric trapezoidal screw threads79.普通螺纹量规型式与尺寸 Types and dimensions of gauges purpose screw threads80.非螺纹密封的管螺纹量规 Gauges for pipe threads prcessure-tight joints are not made on the threads81.螺纹千分尺Screw thread micrometer82.最大允许误差 maximum permissible error83.间隙螺纹量规 Clearance screw gauge84.量针Bar gauge85.螺纹样板 Screw thread template86.用螺纹密封的管螺纹量规Gauges for pipe threads where pressure-tight joints are made on the threads87.刀具预调测量仪? 精度Accuracy of the presetting instrument88.薄膜式气动量仪Membrane type pneumatic measuring instrument89.光栅线位移测量系统Grating linear displacement measuring system90.光栅角位移测量系统Grating angular displacement measuring system91.磁栅线位移测量系统Magnet-grid linear displacement measuring system92.量块附件Accessories for gauge blocks93.V形架Vee blocks94.比较仪座Comparator stand95.磁性表座Magnetic stand96.万能表座Universal stand for dial indicator一般术语：1.几何量 geometrical product2.量值value(of a quantity)3.真值true value(of a quantity)4.约定真值 conventional true value(of a quantity)5.单位unit(of measurement)6.测量measurement7.测试measurement and test8.检验inspecte9.静态测量static measurement10.动态测量dynamic measurement11.测量原理principle of measurement12.测量方法method of measurement13.测量程序measurement procedure14.被测量measurand15.影响量influence quantity16.变换值transformed value(of a measurand)17.测量信号measurement signal18.直接测量法direct method of measurement19.间接测量法indirect method of measurement20.定义测量法definitive method of measurement21.直接比较测量法direct-comparison method of measurement22.替代测量法substitution method of measurement23.微差测量法differential method of measurement24.零位测量法nulll method of measurement25.测量结果result of a measurement26.测得值measured value27.实际值actual value28.未修正结果uncorrected result （of a measurement）29.已修正结果corrected result(of a measurement)30.测量的准确度accuracy of measurement31.测量的重复性repeatability of measurement32.测量复现性reproducibility of measurements33.实验标准偏差experimental standard deviation34.测量不确定度uncertainty of measurement35.测量绝对误差 absolute error of measurement36.相对误差 relative error37.随机误差random error38.系统误差 systematic error39.修正值correction40.修正系数correction factor41.人员误差personal error42.环境误差environmental error43.方法误差error of method44.调整误差adjustment error45.读数误差reading error46.视差parallax error47.估读误差 interpolation error48.粗大误差parasitic error49.检定verification50.校准calibration51.调准gauging52.调整adjustment几何量测量器具术语1.几何量具测量器具dimensional measuring instruments2.长度测量器具length measuring instruments3.角度测量器具angle measuring instruments4.坐标测量机coordinate measuring machine5.形状和位置误差测量器具form and position error measuring instruments6.表面质量测量器具surface quality measuring instruments7.齿轮测量器具gear measuring instruments8.实物量具（简称“量具”）material measure9.测量仪器（简称“量仪”）measuring instruments10.测量链measuring chain11.测量装置measuring system12.指示式测量仪器indicating(measuring )instrument13.记录式测量仪器recording（measuring）instrument14.累计式测量仪器totalizing(measuring)instrument15.积分式测量仪器integrating(measuring)instrument16.模拟式测量仪器analogue(measuring)instrument17.数字式测量仪器digital(measuring)instrument18.测量变换器measuring transducer19.传感器sensor20.指示装置indicating device21.记录装置recording device22.记录载体recording medium23.标尺标记scale mark24.指示器index25.标尺scale26.度盘dail测量器具术语1.标称值nominal value2.示值indication(of a measuring instrument)3.标尺范围scale range4.标称范围nominal range5.标尺长度scale length6.标尺分度scale division7.分度值value of a scale division8.标尺间距scale spacing9.线性标尺linear scale10.非线性标尺non-linear scale11.标尺标数scale numbering12.测量仪器的零位zero of a measuring instrument13.量程span14.测量范围measuring range15.额定工作条件vated operating conditions16.极限条件reference condition17.标准条件reference condition18.仪器常数instrument constant19.响应特性response characteristic20.灵敏度senstivity21.鉴别力discrimination22.分辨力resolution（of an indicating device）23.死区dead band24.准确度accuracy of a measuring instruments25.准确度等级accuracy class26.重复性repeatability of a measuring instrument27.示值变动性varation of indication28.稳定度stability29.可靠性reliability30.回程hysteresis31.漂移drift32.响应时间response time33.测量力（简称“测力”）measuring force测量器具术语1.实物量具示值误差error of indication of a material measure2.测量仪器示值误差error of indication of a measuring instrument3.重复性误差repeatability error of a measuring instrument4.回程误差hysteresis error5.测量力变化variation of measuring force6.测量力落差hysteresis of measuring force7.偏移误差bias error (of a measuring instrument)8.允许误差maximum permissible errors(of measuring instruments)9.跟踪误差tracking error (of a measuring instrument)10.响应率误差response-law error (of a measuring instrument)11.量化误差quantization error (of a measuring instrument)12.基值误差datum error (of a measuring instrument)13.零值误差zero error (of a measuring instrument)14.影响误差influence error15.引用误差fiducial error16.位置误差position error17.线性误差linear error18.响应特性曲线response characteristic curve19.误差曲线error curve20.校准曲线calibration curve21.修正曲线correction curve长度测量器具量具类1.量块gauge block2.光滑极限量规plain limit gauge3.塞规plug gauge4.环规ring gauge卡规snap gauge5.塞尺feeler gauge6.钢直尺steel gauge7.精密玻璃线纹尺precision glass linear scale8.精密金属线纹尺precision metal linear scale9.半径样板radius template卡尺类1.游标卡尺vernier caliper2.带表卡尺dial caliper3.电子数显卡尺calliper with electronic digital display4.深度标游卡尺depth vernier caliper5.电子数显深度卡尺depth caliper with electronic digital display6.带表高度卡尺dial height calliper7.高度游标卡尺height vernier caliper8.电子数显高度卡尺height caliper with electronic digital display9.焊接检验尺calliper for welding inspection千分尺类1.测微头micrometer head2.外径千分尺external micrometer3.杠杆千分尺micrometer with dial comparator4.带计数器千分尺micrometer with counter5.电子数显外径千分尺micrometer with electronic digital display6.小测头千分尺small anvil micrometer7.尖头千分尺point micrometer8.板厚千分尺sheet metal micrometer9.壁厚千分尺tube micrometer10.叶片千分尺blade micrometer11.奇数沟千分尺odd fluted micrometer12.深度千分尺depth micrometer13.内径千分尺internal micrometer14.单杆式内径千分尺single-body internal micrometer15.表式内径千分尺 dail internal micrometer16.三爪式内径千分尺three point internal micrometer17.电子数显三爪式内径千分尺three point internal micrometer18.内测千分尺inside micrometer指示表类1.指示表 dial indicator2.深度指示表depth dial indicator3.杠杆指示表dial test indicator4.内径指示表bore dial indicator5.涨弹簧式指示表 expanding head bore dial indicator6.钢球式内径指示表ball type bore dial indicator7.电子数显指示表dial indicator with electronic digital display8.杠杆卡规indicating snap gauge9.带表卡规dial snap gauge10.带表外卡规outside dial snap gauge11.带表内卡规inside dial snap gauge12.测厚规thickness gauge13.扭簧比较仪microcator14.杠杆齿轮比较仪mechanical dial comparator15.电子量规electronic gauge16.电感式传感器inductance type transducer17.指示装置indicating device18.电感测微仪inductance micrometer19.峰值电感测微仪peak inductance micrometer20.电感内径比较仪inductance bore comparator21.瞄准传感器aiming transducer角度测量器具1.角度块angle block gauge2.正多面棱体regular polygon mirror3.刀具角度样板cutter angular template4.直角尺square5.平行直角尺parallel square6.宽座直角尺wide-stand square7.刀口形直角尺edge square8.矩形直角尺square square9.三角形直角尺three angle square10.圆柱直角尺cylinder square11.方形角尺square guage12.万能角度尺universal bevel protractor13.游标式万能角度尺vernier universal bevel protractor14.表式万能角度尺dial universal bevel protractor15.光学分度头optical dividing head16.目镜式光学分度头optical dividing head with microscope reading17.投影式光学分度尺optical dividing head with projection reading18.光电分度头optical-electronic dividing head19.多齿分度台multi-tooth division table20.分度转台division rotary table21.正炫规sine bar22.普通正炫规general sine bar23.铰链式正炫规hinge type sine bar24.双向正炫规dual-directional sine bar25.圆锥量规cone gauge26.圆锥塞规plug cone gauge27.圆锥环规ring cone gauge28.直角尺测量仪square measuring instrument形位误差测量器具1.平晶optical flat2.单面平晶optical flat3.双面平晶parallel optical flat4.刀口形直尺knife straight edge5.刀口尺knife straight edge6.三棱尺three edges straight edge7.四棱尺four edges straight edge8.平尺straight edge9.矩形平尺square straight edge10.工字形平尺i-beam straight edge11.角形平尺angle straight edge12.桥形平尺bridge type straight edge13.平板surface plate14.铸铁平板cast iron surface plate15.岩石平板granite surface plate16.方箱square box17.水准器式水平仪level meter18.条式水平仪bar level meter19.框式水平仪frame level meter20.合像水平仪imaging level meter21.光学倾斜仪optical inclinometer22.电子水平仪electronic level meter23.指针式电子水平仪electronic level meter with indicator24.数显式电子水平仪electronic level meter with digital display25.平直度测量仪straightness measuring instrument26.光学式平直度测量仪optical straightness measuring instrument27.光电式平直度测量仪photoelectrical straightness measuring instrument28.圆度测量仪roundness measuring instrument29.转轴式圆度测量仪spindle-rotating type roundness measuring instrument30.转台式圆度测量仪table-rotating type roundness measuring instrument表面质量测量器具表面粗糙度比较样块surface roughness comparison specimen铸造表面粗糙度比较样块surface roughness comparison specimen for cast surface磨、车、镗、铣、插及刨加工表面粗糙度比较样块surface roughness comparison specimen for ground,turned,bored,milled,shaped and planed surface电火花加工表面粗糙度比较样块surface roughness comparison specimen for spark-erosion machined surface抛（喷）丸、喷砂加工表面粗糙度比较样块surface roughness comparison specimen for shot blasted and grit blasted surface抛光加工表面粗糙度测量仪portable surface roughness comparison specimen for polished surface便携式表面粗糙度测量仪portable surface roughess measuring instrument驱动箱driving box台式表面粗糙度测量仪bench type surface roughness measuring instrumentNose bridge 鼻中 Tip 脚套Temple 脚丝 Plating 电镀Printing 印字 Lase 镭射Spectacle frames 眼镜架 Sunglasses 太阳眼镜Sports spectacles 运动眼镜 kid's eyewear 儿童眼镜Reading glasses 老花镜 Contact lens 隐形眼镜Glass optical lenses 玻璃镜片 Plastic optical lenses 塑胶镜片Sunglasses lenses, sun clips 太阳镜片、镜夹 Progressive lenses 渐进多焦点镜片Photochromic lenses 变色镜片 Othro k lenses 角膜矫形接确镜片Optical blanks 镜片毛胚 Accessories for contact lens 隐形眼镜附件Spectacle spare parts and accessories 眼镜零件及配件 Components of frames 镜架组件Spectacle cases & accessories 眼镜盒及附件 Eyecare products and solution for lenses and contace lenses 眼睛护理产品及隐形眼镜洁液Spectacle cases & accessories 眼镜盒及其它配件 Lens demisting cloths and solutions 镜片除雾喷剂及清洁布Spectacle assembling & adjusting tools 眼镜加工、装配、调较工具 Visual test equipment 验眼设备Edger 磨边机 Eyeglasses and frame making machinery 眼镜架制造机械Lens manufacturing and processing machinery 镜片造机械及加工机械 Contact lensprocessing machinery 隐形眼镜加工机械Lathe 车床 Coating machine 镀膜机Coating materials 镀膜原料 Electroplating equipment, welding machine 电镀机械、焊接机械Price labeling, stamp printing and screen printing mahcinery 标签机、移印机、丝网印刷 Ultrasonic cleaning equipment 超声波清洁仪器Ophthalmic products 眼科用品 Concentrates for ultrasonic cleaning 超声波清洁剂Lens grinding and polishing filtration systems 镜片研磨及抛光过滤系统 Optical processing equipmentand materials 光学加工设备及原料Measurement instrucments for optical elements and systems 光学用品及系统之测量仪器 Store and workshop fitting and furniture 眼镜店及工场设备及家具Moulds for ophthalmic lenses 镜片模具 Raw materials for frames 眼镜原料Raw materials for lenses 镜片原料 Lens abrasive and polishing materials 打磨镜片原料Electroplating, welding materials 电镀、焊接原材料Opto-laser equipment and instruments 激光科技设备和仪器机械英语单词冲床punching machine机械手robot油压机hydraulic machine车床 lathe刨床planer |'plein?|铣床miller磨床grinder（钻床）driller线切割linear cutting金属切削 metal cutting机床 machine tool金属工艺学 technology of metals刀具 cutter摩擦 friction联结 link传动 drive/transmission轴 shaft弹性 elasticity频率特性 frequency characteristic误差 error响应 response定位 allocation机床夹具 jig动力学 dynamic运动学 kinematic静力学 static分析力学 analyse mechanics拉伸 pulling压缩 hitting剪切 shear扭转 twist弯曲应力 bending stress强度 intensity三相交流电 three-phase AC磁路 magnetic circles 变压器 transformer异步电动机 asynchronous motor几何形状 geometrical精度 precision正弦形的 sinusoid交流电路 AC circuit机械加工余量 machining allowance变形力 deforming force变形 deformation应力 stress硬度 rigidity热处理 heat treatment退火 anneal正火 normalizing脱碳 decarburization渗碳 carburization电路 circuit半导体元件 semiconductor element反馈 feedback发生器 generator直流电源 DC electrical source门电路 gate circuit逻辑代数 logic algebra外圆磨削 external grinding内圆磨削 internal grinding平面磨削 plane grinding变速箱 gearbox离合器 clutch绞孔 fraising绞刀 reamer螺纹加工 thread processing螺钉 screw铣削 mill铣刀 milling cutter功率 power工件 workpiece齿轮加工 gear mechining齿轮 gear主运动 main movement主运动方向 direction of main movement进给方向 direction of feed进给运动 feed movement合成进给运动 resultant movement of feed合成切削运动 resultant movement of cutting合成切削运动方向 direction of resultant movement of cutting 切削深度 cutting depth前刀面 rake face刀尖 nose of tool前角 rake angle后角 clearance angle龙门刨削 planing主轴 spindle主轴箱 headstock卡盘 chuck加工中心 machining center车刀 lathe tool车床 lathe钻削镗削 bore车削 turning磨床 grinder基准 benchmark钳工 locksmith锻 forge压模 stamping焊 weld拉床 broaching machine拉孔 broaching装配 assembling铸造 found流体动力学 fluid dynamics流体力学 fluid mechanics加工 machining液压 hydraulic pressure切线 tangent机电一体化 mechanotronics mechanical-electrical integration 气压 air pressure pneumatic pressure稳定性 stability介质 medium液压驱动泵 fluid clutch液压泵 hydraulic pump阀门 valve失效 invalidation强度 intensity载荷 load应力 stress安全系数 safty factor可靠性 reliability螺纹 thread螺旋 helix键 spline销 pin滚动轴承 rolling bearing滑动轴承 sliding bearing弹簧 spring制动器 arrester brake十字结联轴节 crosshead联轴器 coupling链 chain皮带 strap精加工 finish machining粗加工 rough machining变速箱体 gearbox casing腐蚀 rust氧化 oxidation磨损 wear耐用度 durability随机信号 random signal离散信号 discrete signal超声传感器 ultrasonic sensor集成电路 integrate circuit挡板 orifice 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requirements刚度 rigidity内力 internal force位移 displacement截面 section疲劳极限 fatigue limit断裂 fracture塑性变形 plastic distortion脆性材料 brittleness material刚度准则 rigidity criterion垫圈 washer垫片 spacer直齿圆柱齿轮 straight toothed spur gear斜齿圆柱齿轮 helical-spur gear直齿锥齿轮 straight bevel gear运动简图 kinematic sketch齿轮齿条 pinion and rack蜗杆蜗轮 worm and worm gear虚约束 passive constraint曲柄 crank摇杆 racker凸轮 cams范成法 generation method毛坯 rough游标卡尺 slide caliper千分尺 micrometer calipers攻丝 tap光学仪器类△Topslit illumination 裂隙灯 diopter 屈光度 sphere 球镜cylinder 柱镜 prism 棱镜 magnification 放大倍率diameter 直径 dimensions 尺寸 light spot 光斑fixation lamp 固视灯 led 发光二极管 filter 滤色片lensmeter 焦度计 metal rim 金属圈 PD meter 瞳距仪Pupil Distance 瞳距 Vertex Distance 顶点距 Chart 视标View tester 验光仪 Cutting device 切割刀 Pattern maker 制模机Cutting needle 划针 Layout blocker 中心仪 Hand edger 手动磨边机Lens groover 开槽机 Polisher 抛光机 Polishing stick 抛光膏Drilling machine 钻孔机 Bench drilling machine 台式钻孔机 Drill bit 钻头Lock opener 锁开 Milling cutting 铣刀 Fuse 保险丝Handle 手柄 Center locator 中心定位器 Drill chuck 钻夹头Dial 刻度盘 Frame heater（warmer）烘架机 Heating coil 发热丝Ultrasonic cleaner 清洗机 Combined table 验光组合台 Optometry box 验光盘Grinding wheel 砂轮 Trial lens set 验光镜片箱 Refractometer 验光仪Chart projector 投影仪 Keratometer 角膜曲率仪 Welding machine 焊接机Spray cleaning machine 喷淋清洗机材料配件类△TopMonel 锰料 Stainless Steel 不锈钢 pure Titanium 纯钛Titanium Alloy 钛合金 B-Ti B钛 Elongation 伸长率Tensile strenghth 抗拉强度 high nickel copper alloy 高镍合金 nickelfree alloy 无镍合金nicklfree stainless steel 无镍不锈钢 annealing temperture 退火温度 percent 含量density 密度 melting point 熔点 solidus 固相点liquidus 液相点 physical properties 物理性能 chemical composition 化学组成hinge 铰链 rim wire 框线 round wire 圆线cylinding grinding wheels 筒形砂轮 flaring cup wheels 碗形砂轮 diamod plain wheels 平形砂轮grinding ccoolant 切削液 lens coating liquid 护镜液 polishing powder 抛光粉polishing liquid 抛光液 polishing wheel 抛光轮 plating case 电镀盒plastic case 塑料盒 alumium oxide case 氧化铝盒 rocket screwdrivers 六角螺丝刀mini ring wrenches/nutdrivers 微型戒指扳手radian apparatus 弧度表thickness apparatus 厚度表adhesive tape 粘片 calipers 量具 nut driver 套筒files set 锉刀 drill bits 钻咀 screwdrivers blades 螺丝刀头镜片类△Tophard resin lens 树脂镜片 round-top bifocal lens 圆顶双关镜片 flat-top bifocal lens 平顶双光镜片aspheric hard resin lens 非球面树脂镜片 Non-coated lens 基片（NC） hard coated lens 加硬镜片（HC）Hard & Multi-coated 加硬加膜片（HMC） Hard & Multi-coated,EMI Defending Coating 加硬加膜防辐射片（HMC+EMI） RX Lens-High Index 高散光片color shade 色差 deformation 变形 shrinkage 缩水light transmission 透光率 de-lamination 分裂脱层 abbe value 阿贝数raw material 原材料 catalysis 催化作用 polymerization 聚合作用tinted lens 染色镜片 photochromic lens 变色镜片 spherical 球面的autocollimator 自动准直机bench comparator 比长仪block gauge 块规bore check 精密小测定器calibration 校准caliper gauge 卡规check gauge 校对规clearance gauge 间隙规clinoretee 测斜仪comparator 比测仪cylinder square 圆筒直尺depth gauge 测深规dial indicator 针盘指示表dial snap gauge 卡规digital micrometer 数位式测微计feeler gauge 测隙规gauge plate 量规定位板height gauge 测高规inside calipers 内卡钳inside micrometer 内分测微计interferometer 干涉仪leveling block 平台limit gauge 限规micrometer 测微计mil 千分之一寸monometer 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高精度超声波测距系统英文原文
High-precision Ultrasonic Ranging SystemAbstractThe ultrasound is easy to transmit and has good reflection. Its speed is far less than the speed of flight. So this paper designs an ultrasonic ranging system based on STC89C52RC. This system can be effective in the range of about372 cm. After repeated test, the measurement error can be less than 1 cm. So this system can be applied to intelligent avoidanceand vehicle transportation and other systems.Key words: SCM; ultrasound; send; receive; ranging;temperature compensationI. INTRODUCTIONAt present, the main methods of ultrasonic ranging include pulse-echo method, phase modulation, frequency modulation and FFT-based approach. In these methods, the pulse-echo method has good adaptability; this method not only can be used for manual testing, but also combined with the automated systems. So it is most widely used at home and aboard.Nowadays, the theories of microwave and laser ranging have been applied to the ultrasonic ranging system. It can be a very good research. On the other hand, the filtering and analysis of the echo can also draw more and more attention of many experts and scholars. With the enhanced understanding of the ultrasonic theory, we know how to improve the precision and the anti-jamming capabilities will be the most the important performance indicators.In this paper, the pulse-echo theory is used to design the entire system. The following content is mainly divided into three parts. The first section describes the hardware architecture of the system. The second part describes the software processing of the system. The third section describes the techniques of data processing. Insuch a case, the reader can have a comprehensive understanding of the system.II.THE PRINCIPLE OF ULTRASONIC RANGING SYSTEM Considering the requirement of the actual project, we choose the ultrasound, the frequency of which is 40 kHz. Ultrasonic sensor is this kind device which can converse the sound and the electrical power, also known as ultrasonic transducer or ultrasonic probe. In certain frequency range, it can convert the electrical signal to the external ultrasonic signal or change the external ultrasonic signal to the electricalsignal. In this paper, we choose the T/R40-12 piezoelectric ultrasonic transducer. It works at the frequency of 40 kHz. Its external diameter is 12cm.Ultrasonic generator sends the ultrasonic signal at a certain time. After the ultrasonic signal reflected from the measured object, the ultrasonic receiver can receive the signal. As long as we record the time between the sending time and the receiving time, we can calculate the distance from the ultrasonic sender to the measured object. The formula for calculating the distance is:D = S/2 = V ×T /2 (1)D is the distance between the ranging device and the measured object. S is the distance which the ultrasound transports. V is the speed of the ultrasound. T is the time which the ultrasound transports. Because ultrasound is also a kind of sound wave, the speed can be affected by the temperature. So in this paper, it uses the method of temperature compensation to improve the accuracy of the system.III.HARDWARE OF THE SYSTEMThe system block diagram of ultrasonic ranging system is fig. 1. The hardware mainly includes the SCM system, the display circuit, the temperature compensation circuit and the circuit of sending and receiving ultrasound.Fig.1 The block diagram of this systemA.The circuit of sending ultrasoundThe schematic of sending ultrasound is the figure 2. The sending circuit mainly includes the inverter and the ultrasonic transducer. At first the port P1.0 of SCM is inverted, connected to one pole of the ultrasonic transducer, and then inverted again, connected to another pole of the ultrasonic transducer. By means of this push-pull method, we can improve the emission intensity of the ultrasound. Paralleling the inverter; we can increase the driving capability of outputting. The pull-up resistor R1 and R2 not only increases the driving capability of outputting the high level, but alsoincreases the damping effect of the ultrasonic transducer and shorten the time of its free oscillations.Fig.2 The circuit of sending ultrasoundB. The circuit of receiving ultrasoundThe schematic of receiving ultrasound is the fig. 3.ASIC CX20106 is used for detecting infrared.Considering the carrying frequency of CX20106 is 38kz which is very close to the frequency of the ultrasound, we design the receiving circuit by making use of CX20106.Fig.3 The circuit of receiving ultrasoundC. SCM system and the display circuitSCM STC89C52RC is the core of this ranging system, by using the 12MHz crystal oscillator to obtain a more stable clock frequency and reduce the errors. The port P1.0 of the SCM output the 40 KHz square wave that is required by the ultrasonic transducer. The external interrupt 0 is used to monitor the returning signal. The simple and practical four bit common anode LED is used for the display circuit. The segment code is driven by 74LS245, and the bit code is driven by the transistor 9012. It is shown in fig. 4.Fig.4 SCM system and the display circuitD. The circuit of temperature compensationIn the ultrasonic ranging system, a good many factors can affect the speed, such as the environmental interference, the frequency of the base pulse, etc. But the environmental temperature can be the main factor. According to the formula (2), we can see that the temperature varies from 0 ℃to 40℃, the speed of ultrasound varies from 331.4m/s to 354.85m/s. Take the room temperature 20 as the base, the speed is 343.32m/s and the rate of change is 6.83%. So the temperature factor can not be ignored. In the summer, the temperature is often more than 40 . So in the ultrasonic ranging system, it is necessary to have the temperature compensation in order to reduce the error. Nowadays most of the temperature monitoring system takes the method of temperature sensor. First of all, we convert the temperature signal to the electric signal, secondly amplify the electric signal, and thirdly convert the analog signal to the digital signal by the A/D converter. This kind of circuit is very complex and can be easily affected by the parameters of the components. For these reasons, this paper uses the temperature sensor DS18B20 and SCM to design this precisiontemperature measurement system. It can increase the accuracy of the measurement to some extent. The port DQ of the DS18B20 can directly be connected to the port P3.7 of the SCM. The circuit is shown in fig. 5.Fig.5 The circuit of temperature compensationDS18B20 is the latest digital temperature sensor from America. It is different from the traditional thermistor temperature sensors. We can directly read the measured temperature values. According to the actual requirements, we can realize the 9 or 10 bit A/D conversion through simple programming. As a result, DS18B20 can make the system has a simpler structure and higher reliability. After measuring temperature, we correct the speed of the ultrasound by the following formula: V (T) = (331.05+0.607T) (m/s) (2)In the above formula, T is the Celsius temperature of the environment ( ℃ ). IV. SYSTEM PROGRAMMINGThe programming of the ultrasonic ranging system mainly include the main program, sending subroutine, receiving subroutine, temperature compensation subroutine and display subroutine. On one hand, the assembly language is efficient and easy. On the other hand, the ranging program not only need complex calculation, but also requires a highly accurate result. So we choose assembly language to design this system.A.The main programThe main program firstly initialize the system environment, set the T0 timer for the 16-bit timer mode, Secondly set the general interrupt enable bit EA, then initialize the display port P0 and P2. After measuring the temperature value by making use of the DS18B20, the temperature compensation subroutine modifies the sound speed. At this time, it begins to call the sending subroutine. In order to avoid the direct transmission from the transmitter to the receiver, It need a delay of about 0.1ms (this is the reason for the minimum distance can be measured), then enable the external interrupt 0 to receive the return signal. As a result of using the 12MHz crystal oscillator, the timer increase one, the interval is 1us, when the main program detects that the flag is successful, it start to calculate the distance according to the timer T0, the result will be sent for LED display. Then just repeat this processing. The main program flow chart is shown in fig.6.Fig.6 The flow chart of the main programB. Sending subroutine and receiving subroutineThe sending subroutine is the role of sending about 2 ultrasonic pulses through port P1.0 (about 40kHz square wave), the pulse width is about 12us. At the same time, the timer T0 starts timing. This system makes use of the external interrupt 0 to detect the echo. Once received the echo (the pin INT0 appears a low level), it immediately access to the interrupt program, then stop the timer T0 and set the successful flag. If the echo has not been detected when the timer overflow, the timer T0 overflow interrupt will close the external interrupt 0. At the same time, it clears the successful flag. It means that this ranging processing is unsuccessful.C. Temperature compensation subroutine and display subroutineAccording to the real-time temperature detected, it calculates the speed of sound by substituting the formula (2). Display program shows the distance in the way of look-up table.V.DATA PROCESSINGNot only the processing that the circuit deal with the signal will produce a fixed delay t, but also the processing that SCM collect the signal will produce a fixed delay t. Both the above process certainly lead to some measurement errors, But this system modify the delay to reduce the ranging error. Suppose that S1 and S2 are two fixed distance. t1 and t2 are corresponding to the two fixed distance respectively(including the t factor). So S1 and S2 are actually corresponding to the time t1- t and t2- t. That is S1=0.5V(t1- t),S2=0.5V(t2- t),it can be calculated:After several measurements, we can calculate the system delay t. According to the formula (1), we can determine the distance measured. This processing can reduce the system error to some extent.VI. ACTUAL MEASUREMENT AND ANALYSISThe measurement data is shown in table 7.Table 7.The actual measurement data (unit: cm)The experimental data show that: the blind spot of the ultrasonic ranging system (the least distance that the ultrasonic sensors can detect) is 25cm. The largest distance is 372cm. While designing the program, to avoid the direct transmission of the ultrasound from the transmitter to the receiver, the program has a delay about 1.4ms, so the ultrasonic ranging system has a least ranging distance. Because the propagation of the ultrasound may cause a certain decay and the transmit power is limited, it is difficult to detect the long-rang echo. So there will be a largest measurable distance. On the other side, the temperature compensation can improve the accuracy of the measurement.VII. CONCLUSIONIn this paper, it makes use of the reflection characteristics of ultrasound. We design this kind of ranging system based on STC89C52RC. Its effective range is from 25cm to 372cm by means of non-contact measurement. Once the environment temperature changes, it improves the measurement accuracy of the system by temperature compensation circuit. After modifying the system delay, it can reduce the system latency measurement error and have a significantly improved accuracy. The results validate the rationality of the system including both the hardware and the software. This ranging system is reliable and stable. It is fully able to meet a number of high-precision occasions, such as level measurement, robot positioning, etc. ACKNOWLEDGMENTFirst of all, I thank the IEEE for providing this template, secondly I want to thank my instructor Mr. Guo, last but not least, We sincerely thank all colleagues who previously provided technical support.REFERENCES[1] WANG AI ZH. Design and reality of ultrasonic ranging system base on the microcontroller[J]. Journal of Xinzhou Teachers University, 2010,26(2): 44-46. [2] KANG Y P, LIU ZH Y, GUO X, et al. Design of high-precision ultrasonic wave ranging system[J]. Experimental Technology and Management, 2010, 27(3): 61-64. [3] WANG ZH J, SU X Y, HAN Y P. Ultrasonic distance measurement system with high precision based on AT89C51 microprocessor[J]. Sensor Technology & Applocation, 2010(1): 21-24.[4] HAN L R. A survey of methods for improving ultrasonic ranging precision[J]. Telecommunication Engineering, 2010, 50(9): 132-136.。
超声波测距外文文献
International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 2009EFFECT OF VARIATION OF SEPARATION BETWEEN THE ULTRASONIC TRANSMITTER AND RECEIVER ON THE ACCURACY OF DISTANCE MEASUREMENTAjay Kumar Shrivastava1, Ashish Verma2 and S. P. Singh31Department of Computer Application, Krishna Institute of Engineering and Technology, Ghaziabad (U.P.), Indiaajay@2Department of Physics and Electronics, Dr H S Gour University, Sagar (M.P.), Indiavermaashish31@3Department of Electronics and Communication, Noida Institute of Engineering and Technology, Ghaziabad (U.P.), Indiasahdeopsingh@ABSTRACTAccuracy of distance measurement of an object from an observation point such as a stationary or moving vehicle, equipment or person is most important in large number of present day applications. Ultrasonic sensors are most commonly used due to its simplicity and low cost. The accuracy of the measured distance is dependent on the separation between the ultrasonic transmitter and receiver. This dependency has been studied and reported in this paper. The result shows that the accuracy of distance measured is dependent on the separation between the transmitter and the receiver.KEYWORDSAccuracy of distance measurement, Ultrasonic sensor, distance measurement, microcontroller, sewer pipeline inspection, sewer pipeline maintenance, robotics.1. INTRODUCTIONDistance measurement of an object in front or by the side of a moving or stationary entity is required in a large number of devices and gadgets. These devices may be small or large and also quite simple or complicated. Distance measurement systems for such applications are available. These use various kinds of sensors and systems. Low cost and accuracy as well as speed are important in most of the applications. Hence ultrasonic sensors are most commonly used. To maintain the accuracy of measured distance the separation between transmitter and receiver is very important. In this paper, we describe the results of a study on the variation of error of measurement of distance of an object by varying the separation between the transmitter and receiver of the ultrasonic sensors by using microcontroller P89C51RD2. Ultrasound sensors are very versatile in distance measurement. They are also providing the cheapest solutions. Ultrasound waves are suitable both for air and underwater use [1].19International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 2009Ultrasonic sensors are also quite fast for most of the common applications. In simpler system a low cost version of 8- bit microcontroller can be used to implement the system to lower the cost. We are applying this system for sewer inspection system. Sewer blockages have become quite common. The blockages have become more frequent due to the dumping of polythene bags, hair and solid materials into the sewer system [2], [3]. There has been no work done in this direction. This is a new study which is useful to find out the optimal separation between ultrasonic transmitter and receiver to measure small distances.2. PRINCIPLEUltrasonic transducer uses the physical characteristics and various other effects of ultrasound of a specific frequency. It may transmit or receive the ultrasonic signal of a particular strength. These are available in piezoelectric or electromagnetic versions. The piezoelectric type is generally preferred due to its lower cost and simplicity to use [5]. The transmitter and receiver are available either as single unit or as separate units. The Ultrasonic wave propagation velocity in the air is approximately 340 m/s, the same as sonic velocity. To be precise, the ultrasound velocity is governed by the medium, and the velocity in the air is calculated using the formula given below (1). V= 340+0.6(t-15) m/s t:temperature, °C (1)In this study, we assumed the temperature to be 20°C, so the velocity of ultrasound in the air is 343 m/s. Because the travel distance is very short, the travel time is little affected by temperature. It takes approximately 29.15µsec for the ultrasound to propagate through 1cm, so it is possible to have 1cm resolution in the system [6].3. EXPERIMENTAL SETUPThe system consists of a transmitter and a receiver module controlled by a microcontroller P89C51RD2. We have used a microcontroller development kit for testing of the system. We are using 40Khz ultrasound sensors for our experiments. The Simplified block diagram of the system is shown in Fig.1. In Fig. 1, the interrupt1 signal initiates the system. When the interrupt1 signal is generated, MCU starts the timer1 to measure time and simultaneously generates the controlled 40Khz pulses having a train of specific number of pulses. These pulses are applied to the amplifier circuit and after amplification the ultrasound transmitter transmits the pulse train in the direction of the object. These ultrasonic pulses are reflected from the object and travels back in different directions. These reflected waves arrive at receiver. After amplification and processing it generates signal interrupt. This is applied as interrupt2 to the MCU. Interrupt2 stops the timer1, and MCU calculates the time elapsed between the generation of the wave and reception of the wave. This time is proportional to the distance travelled by the waves. Using the formula, MCU calculates the distance of the obstacle and display it or transfer it to the part of the total system where it is used for further control. Using this elapsed time, we calculate the distance of the object from the ultrasonic sensors.20International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 2009INT1 MCU Ultrasound Transmitter CircuitTINT2 Receiver Amplifier Display RFig 1: Block Diagram of the System4. EXPERIMENTAL RESULTSThe waveforms of the transmitted and received waveforms of the ultrasonic signal is stored in Digital Storage Oscilloscope. We have taken the readings for various separation between tranmitter and reciever. We have measured the distance in the interval of 5cm. For every measured distance three reading have been taken. The table shows the average of the three readings. The maesured distance is calculated on the basis of travelled time. The formula to calculate the distance is given below: Dist. (cm) = (Travelled Time*10-6 * 34300) / 2 (2)The ultrasonic waves travelled from the transmitter to the object and from the object back to the receiver hence the whole distance is divided by two. Values of %Error have also been calculated and shown. The error result shows that there is some error in recording the start and finish times in the system. When the distance increases the error is distributed in a larger distance and hence the %error decreases. We have taken the measurements for various separations of transmitter and receiver renging from 2cm to 15cm. The Table 1 shows the results when separation between tranmitter and reciever is 2cm. Table 1: Experimental Results (For 2cm Separation between Transmitter and Reciever) S.No . 1 2 3 4 5 6 7 8 9 10 Actual Distance(cm) 5 10 15 20 25 30 35 40 45 50 Travelled Time (µSec) 400 690 1050 1250 1650 1930 2180 2400 2700 3000 Measured Distance (cm) 6.86 11.83 18.01 21.44 28.30 33.10 37.39 41.16 46.31 51.45 % Error 37.20 18.34 20.05 7.19 13.19 10.33 6.82 2.90 2.90 2.90The result shows that the acuracy of measured distance is increses for longer distances. The %error becomes constant for measured distances above 40cm. The highest %error is occured in small distance of 5cm. It is also shown by Fig.2.21International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 2009Fig. 2: Graph of Actual Distance versus Measured Distance for 2cm Separation between Transmitter and Reciever. The Table 2 shows the result when separation between transmitter a reciever is 5cm. Table 2: Experimental Results for 5cm Separation between Transmitter and reciever) S.No. 1 2 3 4 5 6 7 8 9 10 Actual Distance(cm) 5 10 15 20 25 30 35 40 45 50 Travelled Time (µSec) 410 700 1000 1300 1600 1870 2220 2500 2780 3120 Measured Distance (cm) 7.03 12.01 17.15 22.30 27.44 32.07 38.07 42.88 47.68 53.51 % Error 40.63 20.05 14.33 11.48 9.76 6.90 8.78 7.19 5.95 7.02The resluts shows that the accuracy is incresed in camparison to the previous results. This is also shown by the Fig. 3.Fig. 3: Graph of Actual Distance versus Measured Distance when Separation between Transmitter and Reciever is 5 cm.22International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 2009The Table 3 shows the results when separation between transmitter and reciever is 10 cm. These results indicates that when we increase the separation between transmitter and receiver the %error increses for small measured distances. Table 3: Experimental Results for Separation of 10cm between Transmitter and reciever)S.No. 1 2 3 4 5 6 7 8 9 10Actual Distance(cm) 5 10 15 20 25 30 35 40 45 50Travelled Time (µSec) 620 750 1010 1310 1600 1870 2200 2400 2680 3000Measured Distance (cm) 10.63 12.86 17.32 22.47 27.44 32.07 37.73 41.16 45.96 51.45% Error 112.66 28.63 15.48 12.33 9.76 6.90 7.80 2.90 2.14 2.90Again the accuracy increases with the distance but the small distances are not so accurate. The error is high for small distances. It is also shown by the Fig. 4.Fig. 4: Graph of Actual Distance versus Measured Distance when Separation between Transmitter and Reciever is 10 cm. The Table 4 is showing the result of measured distance when 15cm separation between transmitter and reciever. These results shows that when we increase the separation between transmitter and receiver the %error increses. This increase is very high in small measured distances like 5cm in our experiment. The lowest %error observed for the measured distance of 45cm and again it is increasing for the measured distance of 50cm. The results shows that we have to stop the increament of seaparation between transmitter and receiver in our experiment.23International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 2009Table 4: Experimental Results for 15cm Separation between Transmitter and Reciever) S.No. 1 2 3 4 5 6 7 8 9 10 Actual Distance(cm) 5 10 15 20 25 30 35 40 45 50 Travelled Time (µSec) 1300 930 1180 1350 1620 1900 2200 2420 2700 3200 Measured Distance (cm) 22.30 15.95 20.24 23.15 27.78 32.59 37.73 41.50 46.31 54.88 % Error 345.90 59.50 34.91 15.76 11.13 8.62 7.80 3.76 2.90 9.76Again the error for the small distance say 5cm is very high. It is also showing that the graph between actual distance versus measured distance is not a straight line. This graph is shown in Fig. 5.Fig. 5: Graph of Actual Distance versus Measured Distance for 15cm Separation between Transmitter and Reciever. The graph between the measured distance the actual distance indicates that the measured distance is proportional to the actual distance.5. ANALYSIS OF THE RESULTSThe experimental results shows that the distance measured for different separations between transmitter and receiver are accurate for long distances e.g. more than 20cm. For small actual distances say 5cm, the small transmitter and receiver distances are better in comparison to the long distances between transmitter and receiver. If we place the transmitter and receiver at 15cm separation than the small distance like 5cm are not going to be measured correctly. Result shows the error of 345%. Hence we have to place the transmitter and receiver at proper distance like 5-10cm. For long distances the distance between transmitter and receiver has very low impact on the accuracy. We have compared the all measured distances for different separations between transmitter and receiver and the results are shown in the Table 5.24International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 2009Table 5: Comparison of Measured Distances for different Separations between Transmitter and Reciever Actual Dist. (cm) 5 10 15 20 25 30 35 40 45 50 Measured Distance (in cm) when Separation between Transmitter and Reciever is = 2cm 6.86 11.83 18.01 21.44 28.30 33.10 37.39 41.16 46.31 51.45 5cm 7.03 12.01 17.15 22.30 27.44 32.07 38.07 42.88 47.68 53.51 10cm 10.63 12.86 17.32 22.47 27.44 32.07 37.73 41.16 45.96 51.45 15cm 22.30 15.95 20.24 23.15 27.78 32.59 37.73 41.50 46.31 54.88S. No. 1 2 3 4 5 6 7 8 9 10As we can see in the table that small measured distance like 5cm is measured accurately when 2cm separation between transmitter and receiver. It has the lowest error. When we increase the distance to be measured, the accuracy of measured distance are high and it the highest for 10cm separation between transmitter and receiver. Hence for the range of 5cm to 50cm, as we taken in our experiments, the separation between transmitter and receiver are 2cm to 10cm. If we increase this than the error percentage also increases. The Fig.6 shows the graph between actual distance and the different measured distances for various separations between transmitter and receiver.Fig. 6: Graph for Comparison of Measured Distances for different Separations between Transmitter and Reciever This graph is also showing that the graph plotting of measured distance when separation between transmitter and receiver is 2cm, 5cm and 10cm is almost on the same points. The graph plotting when 15cm separation between transmitter and receiver, is not very encouraging for this range of 5cm to 50cm.25International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 20096. CONCLUSIONSWe have done the experiments on our ultrasonic measurement system for the various separations between transmitter and receiver and the result shows that the measured distance is satisfactory for our study. When the distance increases the error becomes constant and very less. A correction may be applied to calculate the correct distance. Interrupt1 initiates the system and interrupt2 stops the timer and on the basis of the travelled time distance calculated. In future, the whole system will be mounted on the one PCB. This study shows that for small distances the separation between transmitter and receiver should be 5cm to 10cm. Hence this study will help in fixing the separation between transmitter and receiver in the robotic vehicle for blockage detection so we are able to calculate the more accurate distance of the blockage in the sewage filled sewer lines. Hence we can prevent human labour to go in the sewage filled sewer lines to detect the blockage which are very dangerous to the human as they contain the poisonous gases.ACKNOWLEDGMENTThis work is supported by MP Council of Science and Technology (MPCST), Bhopal, Project Code No. R&D/PHYSICS.23/08-09-1.REFERENCES[1] J. David and N cheeke “Fundamentals of Ultrasonic Waves” CRC Press, Florida, USA, 2002, ISBN 0-8493-0130-0. [2] Singh SP, Verma Ashish, Shrivastava AK “Design and Development of Robotic Sewer Inspection Equipment Controlled by Embedded Systems” Proceedings of the First IEEE International Conference on Emerging Trends in Engineering and Technology, July 16-18, 2008, Nagpur, India pp. 1317-1320. [3] Shrivastava AK, Verma Ashish, Singh SP “Partial Automation of the Current Sewer Cleaning System”, Invertis Journal of Science and Technology, Vol.1, No.4, 2008, pp 261-265. [4] O. Duran, K.Althoefer, and L Seneviratene, “State of the Art in Sensor Technologies for Sewer Inspection”, IEEE Sensors Journal, April 2002, Vol. 2, N.2, pp 63. [5] Hongjiang He, Jianyi Liu, “The Design of Ultrasonic Distance Measurement System Based on S3C2410” Proceedings of the 2008 IEEE International Conference on Intelligent Computation Technology and Automation, 20-22 Oct, 2008, pp. 44-47. [6] Yongwon Jang, Seungchul Shin, Jeong Won Lee, and Seunghwan Kim, “A Preliminary Study for Portable Walking Distance Measurement System Using Ultrasoinc Sensors” Proceedings of the 29th Annual International Conference of the IEEE EMBS Cité Internationale Lyon, France, Aug 23-26, 2007, pp. 5290-5293.26International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 2009AuthorsAjay Kumar Shrivastava was born at Guna (M.P.), India on 7th August, 1977. He had done his graduation in Electronics from Dr. H.S.Gour University, Sagar (M.P.), India in 1998. After that he had completed his MCA from the same university in 2002. He has more than seven years of teaching experience. He had worked as Lecturer in Technocrats Institute of Technology, Bhopal (M.P.), India for three years. Presently he is working as Associate Professor in Krishna Institute of Engineering and Technology, Ghaziabad (U.P.), India from Aug. 2005. His research interests include Embedded Systems and Data Mining. Mr. Shrivastava is the life member of Computer Society of India (CSI). He is also life member of Association of Computer, Electronics and Electrical Engineers (ACEEE) and International Association of Computer Science and Information Technology (IACSIT) and International Association of Engineers (IAENG). He is also the member of Computer Science Teachers Association (CSTA). He is also reviewer of various ACEEE organized conferences. He has published a paper in National Journal and published/presented four papers in conferences.Dr. Ashish Verma was born on 23rd March 1963. He received the M.Sc. degree in Physics with specialization in Electronics and solidstate physics in1984 and Ph.D. degree in Physics in 1991 from Dr. Hari Singh Gour Central University, Sagar, (M.P.), India. He has having 24 years of teaching (UG/PG) and research experience and is currently working as a Senior Lecturer in the department of Physics and Electronics, Dr. Hari Singh Gour Central University, Sagar. He has guided about 150 students (UG/PG) for their projects in the field of Electronics and Physics. He guided 4 Ph.D. students (One as Co-Supervisor). Presently, he is guiding 8 Ph.D. students for their innovative research. He is supervising 3 Ph.D. students in Physics and Electronics of M.P. BHOJ (Open) University, Bhopal, (M.P.), India. He had published a book entitled “Microprocessor”, Vishwavidyalaya Prakashan, Sagar (M.P.), India and written two chapters in “Bhotiki”, Madhya Pradesh Hindi Granth Academy, Bhopal (M.P.), India. Dr. Verma published / presented about 50 research papers in the National /International Journals / Conferences of high repute. He is the Executive Council (Government Nominee) in Government Girls Autonomous College, Sagar, (M.P.). He had worked in various committees of the university. Prof. S.P.Singh was born at village Manirampur in Nalanda district, Bihar, India on 10th June 1939. He did his schooling and intermediate studies at Patna. He completed his B.Sc.(Engg.) degree in Electrical Engineering from National Institute of Technology, Jamshedpur, India in the year 1964. He did M.Tech. in Electrical Engineering (Electronic Devices and Circuits) from Indian Institute of Technology, Kanpur, India in 1975. He obtained his Ph.D. degree from Ranchi University, Ranchi, India in the year 1993. His topic was microprocessor based speed control of induction motors.27International Journal of Computer science & Information Technology (IJCSIT), Vol 1, No 2, November 2009He joined N.I.T., Jamshedpur, India as Lecturer in Electrical Engineering in 1964 continued there as lecturer, AP and Professor till 1999. He started teaching electronic subjects and shifted to electronics engineering. After retirement from NIT in 1999, he continued to work as professor in institutes around Delhi. Currently, he is working as professor in Electronics & Communication Engineering at Noida Institute of Engineering and Technology, Greater Noida, U.P., India. Prof. Singh was a member of IEEE from 1974 to 1991. At present Dr. Singh is a fellow of I.E.T.E., India.28。
测量专业常用英语翻译短语或词组
测量专业常用英语词汇阿贝比长原理Abbe comparator principle阿达马变换Hadamard transformation安平精度setting accuracy岸台，*固定台base station暗礁reef靶道工程测量target road engineering survey 半导体激光器semiconductor laser半日潮港semidiurnal tidal harbor半色调halftone饱和度saturation北极星任意时角法method by hour angle of Polaris贝塞尔大地主题解算公式Bessel formula for solution of geodetic problem贝塞尔椭球Bessel ellipsoid贝叶斯分类Bayesian classification被动式遥感passive remote sensing本初子午线prime meridian比较地图学comparative cartography比较地图学comparative cartography比例尺scale比例量表ratio scaling比例误差proportional error比值变换ratio transformation比值增强ratio enhancement闭合差closing error闭合差closure闭合差closing error闭合差closure闭合导线closed traverse闭合导线closed traverse闭合水准路线closed leveling line闭合水准路线closed leveling line边长中误差mean square error of side length 边交会法linear intersection边角测量triangulateration边角交会法linear-angular intersection边角网triangulateration network边缘检测edge detection边缘增强edge enhancement编绘compilation编绘compilation编绘原图compiled original 编绘原图compiled original变比例投影varioscale projection变换光束测图affine plotting变线仪variomat变形观测控制网control network for deformation observation变形观测控制网control network for deformation observation变形椭圆indicatrix ellipse标称精度nominal accuracy标称精度nominal accuracy标尺rod标尺staff标高差改正correction for skew normals标高差改正correction for skew normals标界测量survey for marking of boundary标志灯，*回光灯signal lamp标准差standard deviation标准配置点Gruber point标准纬线standard parallel冰后回弹post glacial rebound波茨坦重力系统Potsdam gravimetric system波带板zone plate波浪补偿compensation of undulation波浪补偿compensation of undulation波浪补偿heave compensation波浪补偿器，*涌浪滤波器heave compensator波罗-科普原理Porro-Koppe principle波谱测定仪spectrometer波谱集群spectrum cluster波谱特征空间spectrum feature space波谱特征曲线spectrum character curve波谱响应曲线spectrum response curve波束角beam angle波束角wave beam angle泊位Berth补偿器compensator补偿器compensator补偿器补偿误差compensating error of compensator补偿器补偿误差compensating error of compensator布格改正Bouguer correction布格异常Bouguer anomaly布隆斯公式Bruns formula布耶哈马问题Bjerhammar problem采剥工程断面图striping and mining engineering profile采剥工程综合平面图synthetic plan of striping and mining采场测量stope survey采掘工程平面图mining engineering plan采区测量survey in mining panel采区联系测量connection survey in mining panel采区联系测量connection survey in mining panel采样sampling采样间隔sampling interval彩色编码color coding彩色编码color coding彩色变换color transformation彩色变换color transformation彩色复制color reproduction彩色复制color reproduction彩色感光器材color sensitive material彩色感光器材color sensitive material彩色红外片，*假彩色片false color film彩色红外片，*假彩色片color infrared film 彩色红外片，*假彩色片color infrared film 彩色片color film彩色片color film彩色摄影color photography彩色摄影color photography彩色校样color proof彩色校样color proof彩色样图color manuscript彩色样图color manuscript彩色增强color enhancement彩色增强color enhancement彩色坐标系color coordinate system彩色坐标系color coordinate system参考数据reference data参考椭球reference ellipsoid参考效应reference effect参数平差，*间接平差parameter adjustment 侧方交会side intersection侧扫声呐side scan sonar侧视雷达side-locking radar测标[measuring] mark测杆measuring bar测高仪Altimeter测绘标准standards of surveying and mapping测绘联合会International Union of Surveying and Mapping测绘学geomatics测绘学SM测绘学surveying and mapping测绘仪器instrument of surveying and mapping测角中误差mean square error of angle observation测距定位系统，*圆-圆定位系统range positioning system测距雷达range-only radar测距盲区range hole测距仪rangefinder测量标志survey mark测量船survey vessel测量规范specifications of surveys测量控制网surveying control network测量平差adjustment of observation测量平差survey adjustment测量学surveying测流current surveying测流current surveying测深改正correction of depth测深改正correction of depth测深杆sounding pole测深精度total accuracy of sounding测深仪读数精度reading accuracy of sounder测深仪发射参数，*测深仪零线transmiting line of sounder测深仪回波信号echo signal of sounder测深仪记录纸recording paper of sounder测速标marks for measuring velocity测图卫星mapping satellite测微密度计microdensitometer测微目镜micrometer eyepiece测微器micrometer测线survey line测站station测站归心station centring层间改正plate correction觇牌target长度标准检定场standard field of length厂址测量surveying for site selection超导重力仪superconductor gravimeter超焦点距离hyperfocal distance超近摄影测量macrophotogrammetry潮汐表tidal tables潮汐波tidal wave潮汐调和常数tidal harmonic constants潮汐调和分析tidal harmonic analysis潮汐非调和常数tidal nonharmonic constants潮汐非调和分析tidal nonharmonic analysis 潮汐摄动tidal perturbation潮汐因子tidal factor潮汐预报tidal prediction潮信表tidal information panel沉船wreck沉降观测settlement observation成像光谱仪imaging spectrometer成像雷达imaging radar城市测量urban survey城市地形测量urban topographic survey城市地形图topographic map of urban area 城市基础地理信息系统UGIS城市基础地理信息系统urban geographical information system城市控制测量urban control survey城市制图urban mapping乘常数multiplication constant尺度参数scale parameter抽象符号abstract symbol触觉地图tactual map船台，*移动台mobile station垂核面vertical epipolar plane垂核线vertical epipolar line垂球plumb bob垂线偏差改正correction for deflection of the vertical垂线偏差改正correction for deflection of the vertical垂直角vertical angle垂直折光误差vertical refraction error垂直折光系数vertical refraction coefficient 垂准仪，*铅垂仪plumb aligner纯重力异常pure gravity anomaly磁变年差annual change of magnetic variation磁测深magnetic sounding磁测深线magnetic sounder磁方位角magnetic azimuth磁力扫海测量magnetic sweeping磁力异常区magnetic anomaly area磁偏角magnetic variation磁倾角magnetic dip磁像限角magnetic bearing磁子午线magnetic meridian粗差gross error粗差检测gross error detection粗码C/A Code粗码Coare/Acquision Code粗码C/A Code粗码Coare/Acquision Code打样Proofing大比例尺测图large scale topographical mapping大潮升spring rise大地测量边值问题geodetic boundary value problem大地测量参考系geodetic reference system 大地测量数据库geodetic database大地测量学geodesy大地测量仪器geodetic instrument大地方位角geodetic azimuth大地高ellipsoidal height大地高geodetic height大地基准geodetic datum大地经度geodetic longitude大地水准面geoid大地水准面高geoidal height大地水准面高geoidal undulation大地天顶延迟atmosphere zenith delay大地天文学geodetic astronomy大地网geodetic network大地纬度geodetic latitude大地线geodesic大地原点geodetic origin大地主题反解inverse solution of geodetic problem大地坐标geodetic coordinate大地坐标系geodetic coordinate system大陆架地形测量continental shelf topographic survey大陆架地形测量continental shelf topographic survey大气传输特性characteristics of atmospheric transmission大气传输特性characteristics of atmospheric transmission大气窗atmospheric window大气改正,*气象改正atmospheric correction 大气透过率atmospheric transmissivity大气噪声atmospheric noise大气阻力摄动atmospheric drag perturbation 大像幅摄影机large format camera大像幅摄影机LFC大洋地势图GEBCO大洋地势图general bathymetric chart of the oceans大圆航线图great circle sailing chart带谐系数coefficient of zonal harmonics带谐系数coefficient of zonal harmonics带状平面图zone plan单差相位观测single difference phase observation单点定位point positioning单片坐标量测仪monocomparator单位权unit weight单位权方差，*方差因子variance of unit weight弹道摄影测量ballistic photogrammetry弹道摄影机ballistic camera当地平均海面local mean sea level挡差改正correction of scale difference挡差改正correction of scale difference导标leading beacon 导弹定向测量missile orientation survey导弹试验场工程测量engineering survey of missile test site导航台定位测量navigation station location survey导航台定位测量navigation station location survey导航图navigation chart导航图navigation chart导航线，*叠标线leading line导入高程测量induction height survey导线边traverse leg导线测量traverse survey导线点traverse point导线横向误差lateral error of traverse导线角度闭合差angle closing error of traverse导线结点junction point of traverses导线曲折系数meandering coefficient of traverse导线全长闭合差total length closing error of traverse导线网traverse network导线相对闭合差relative length closing error of traverse导线折角traverse angle导线纵向误差longitudinal error of traverse 岛屿测量island survey岛屿联测island-mainland connection survey 岛屿图island chart倒锤[线]观测，倒锤法inverse plummet observation测量专业常用英语翻译短语或词组-2灯[光性]质characteristic of light灯[光性]质characteristic of light灯标light beacon灯船light ship灯船light vessel灯浮标light buoy灯高height of light灯光节奏flashing rhythm of light灯光射程light range灯光遮蔽Eclipse灯光周期light period灯色light color灯塔light house等比线isometric parallel等高距contour interval等高距contour interval等高棱镜contour prism等高棱镜contour prism等高线Contour等高线Contour等高仪astrolabe等积投影equivalent projection等级结构hierarchical organization等角定位格网equiangular positioning grid 等角条件，*正形投影conformal projection 等角条件，*正形投影conformal projection 等精度[曲线]图equiaccuracy chart等距量表interval scaling等距投影equidistant projection等距圆弧格网equilong circle arc grid等量纬度isometric latitude等偏摄影parallel-averted photography等倾摄影equally tilted photography等权代替法method of equalweight substitution等值灰度尺equal value gray scale等值区域图，*分区量值地图choroplethic map等值区域图，*分区量值地图choroplethic map等值线地图isoline map等值线法isoline method低潮线low water line底板测点floor station底点纬度latitude of pedal底色去除under color removal底色增益under color addition底质bottom characteristics底质quality of the bottom底质采样bottom characteristics sampling底质调查bottom characteristics exploration 底质分布图bottom sediment chart地产界测量property boundary survey 地磁经纬仪magnetism theodolite地磁仪magnetometer地底点ground nadir point地固坐标系body-fixed coordinate system地固坐标系earth-fixed coordinate system地基系统ground-based system地极坐标系coordinate system of the pole地极坐标系coordinate system of the pole地籍cadastre地籍cadastre地籍簿land register地籍册cadastral lists地籍册cadastral lists地籍测量cadastral survey地籍测量cadastral survey地籍调查cadastral inventory地籍调查cadastral inventory地籍更新renewal of the cadastre地籍管理cadastral survey manual地籍管理cadastral survey manual地籍图cadastral map地籍图cadastral map地籍修测cadastral revision地籍修测cadastral revision地籍制图cadastral mapping地籍制图cadastral mapping地界测量land boundary survey地壳均衡isostasy地壳均衡改正isostatic correction地壳形变观测crust deformation measurement地壳形变观测crust deformation measurement地块测量parcel survey地类界图land boundary map地理格网geographic grid地理视距geographical viewing distance地理信息传输geographic information communication地理信息系统geographic information system地理信息系统GIS地理坐标geographic graticule地理坐标参考系geographical referencesystem地貌图geomorphological map地貌形态示量图morphometric map地面接收站ground receiving station地面立体测图仪terrestrial stereoplotter地面摄谱仪terrestrial spectrograph地面摄影测量terrestrial photogrammetry地面摄影机terrestrial camera地面实况ground truth地面照度illuminance of ground地名geographical name地名place name地名标准化place-name standardization地名录gazetteer地名数据库place-name database地名索引geographical name index地名通名geographical general name地名学toponomastics地名学toponymy地名转写geographical name transcription地名转写geographical name transliteration 地平线摄影机horizon camera地平线像片horizon photograph地倾斜观测ground tilt measurement地球定向参数earth orientation parameter地球定向参数EOP地球同步卫星geo-synchronous satellite地球椭球earth ellipsoid地球位，*大地位geopotential地球位数geopotential number地球位系数potential coefficient of the earth 地球形状earth shape地球形状Figure of the earth地球仪globe地球引力摄动terrestrial gravitational perturbation地球重力场模型earth gravity model地球资源卫星earth resources technology satellite地球资源卫星ERTS地球自转参数earth rotation parameter地球自转参数ERP地球自转角速度rotational angular velocity of the earth 地势图hypsometric map地图map地图编绘map compilation地图编辑map editing地图编辑大纲map editorial policy地图表示法cartographic presentation地图表示法cartographic presentation地图传输cartographic communication地图传输cartographic communication地图叠置分析map overlay analysis地图分类cartographic classification地图分类cartographic classification地图分析cartographic analysis地图分析cartographic analysis地图符号库map symbols bank地图符号学cartographic semiology地图符号学cartographic semiology地图负载量map load地图复杂性map complexity地图复制map reproduction地图感受map perception地图更新map revision地图集信息系统Atlas information system地图利用map use地图量算法cartometry地图量算法cartometry地图模型，*制图模型cartographic model 地图模型，*制图模型cartographic model 地图内容结构cartographic organization地图内容结构cartographic organization地图判读map interpretation地图评价cartographic evaluation地图评价cartographic evaluation地图潜信息cartographic potential information地图潜信息cartographic potential information地图清晰性map clarity地图色标color chart地图色标color chart地图色标map color standard地图色谱map color atlas地图设计map design地图数据结构map data structure地图数据库cartographic database地图数据库cartographic database地图数字化map digitizing地图投影map projection地图显示map display地图信息cartographic information地图信息cartographic information地图信息系统cartographic information system地图信息系统CIS地图信息系统cartographic information system地图信息系统CIS地图选取cartographic selection地图选取cartographic selection地图学cartography地图学cartography地图研究法cartographic methodology地图研究法cartographic methodology地图易读性map legibility地图印刷map printing地图语法cartographic syntactics地图语法cartographic syntactics地图语言cartographic language地图语言cartographic language地图语义cartographic semantics地图语义cartographic semantics地图语用cartographic pragmatics地图语用cartographic pragmatics地图阅读map reading地图整饰map decoration地图制图map making地图制图软件cartographic software地图制图软件cartographic software地图注记map lettering地下管线测量underground pipeline survey 地下铁道测量subway survey地下铁道测量underground railway survey 地下油库测量underground oil depot survey 地心经度geocentric longitude地心纬度geocentric latitude地心引力常数geocentric gravitational constant地心坐标系geocentric coordinate system 地形测量topographic survey地形底图base map of topography地形改正topographic correction地形数据库topographic database地形图topographic map地形图更新revision of topographic map地形图图式topographic map symbols地震台精密测量precise survey at seismic station地质测量geological survey地质点测量geological point survey地质略图geological scheme地质剖面测量geological profile survey地质剖面图geological section map典型图形平差adjustment of typical figures 点方式point mode点位中误差mean square error of a point点下对中centering under point点下对中centering under point点状符号point symbol电磁波测距electromagnetic distance measurement电磁波测距仪electromagnetic distance measuring instrument电磁传播[时延]改正correction for radio wave propagation of time signal电磁传播[时延]改正correction for radio wave propagation of time signal电荷耦合器件CCD电荷耦合器件charge-coupled device电荷耦合器件CCD电荷耦合器件charge-coupled device电离层折射改正ionospheric refraction correction电子测距仪EDM电子测距仪electronic distance measuring instrument电子出版系统electronic publishing system 电子地图集electronic atlas电子分色机color scanner电子分色机color scanner电子海图electronic map电子海图数据库ECDB电子海图数据库electronic chart database电子海图显示和信息系统ECDIS电子海图显示和信息系统electronic chart display and information system电子经纬仪electronic theodolite电子平板仪electronic plane-table电子求积仪electronic planimeter电子水准仪electronic level电子速测仪，*全站仪electronic tachometer 电子显微摄影测量nanophotogrammetry电子显微摄影测量nanophotogrammetry电子相关electronic correlation电子印像机electronic printer调绘Annotation调焦误差error of focusing调频频率modulation frequency调制传递函数modulation transfer function 调制传递函数MTF调制器modulator叠栅条纹图，*莫尔条纹图moirétopography顶板测点roof station定深扫海sweeping at definite depth定位标记positioning mark定位点间距positioning interval定位检索，*开窗检索retrieval by windows 定位统计图表法positioning diagram method定线测量Alignment survey定向连接点connection point定向连接点connection point for orientation 定向连接点connection point定向连接点connection point for orientation 定性检索retrieval by header定影Fixing动感autokinetic effect动画引导animated steering动画制图animated mapping动态定位kinematic positioning独立交会高程点elevation point by independent intersection独立模型法空中三角测量independent model aerial triangulation独立坐标系independent coordinate system 度盘circle 度盘circle断面仪Profiler对景图front view对流层折射改正tropospheric refraction correction对数尺logarithmic scale对中杆centering rod对中杆centering rod多倍仪multiplex多边形地图polygonal map多边形结构polygon structure多边形平差法Adjustment by method of polygon多波束测探multibeam echosounding多波束测探系统multibeam sounding system 多层结构multi layer organization多级纠正multistage rectification多焦点投影polyfocal projection多路径效应multipath effect多媒体地图multimedia map多年平均海面multi-year mean sea level多谱段扫描仪MSS多谱段扫描仪multispectral scanner多谱段摄影multispectral photography多谱段摄影机multispectral camera多谱段遥感multispectral remote sensing多时相分析multi-temporal analysis多时相遥感multi-temporal remote sensing 多星等高法equal-altitude method of multi-star多用途地籍multi-purpose cadastre多余观测redundant observation多圆锥投影polyconic projection厄特沃什效应Eötvös effect二值图像binary image测量专业常用英语翻译短语或词组-3发光二极管LED发光二极管light-emitting diode法方程normal equation法方程normal equation法截面normal section法截面normal section法伊改正Faye correction反差Contrast反差Contrast反差系数contrast coefficient反差系数contrast coefficient反差增强contrast enhancement反差增强contrast enhancement反立体效应pseudostereoscopy反射波谱reflectance spectrum反束光导管摄影机return beam vidicon camera反像mirror reverse反像wrong-reading反转片reversal film范围法area method方差-协方差传播律variance-covariance propagation law方差-协方差矩阵variance-covariance matrix 方里网kilometer grid方位角中误差mean square error of azimuth 方位圈compass rose方位圈compass rose方位投影azimuthal projection方向观测法method by series方向观测法method of direction observation 防波堤Breakwater防波堤mole房地产地籍real estates cadastre仿射纠正affine rectification放样测量setting-out survey非地形摄影测量nontopographic photogrammetry非地形摄影测量nontopographic photogrammetry非监督分类unsupervised classification非量测摄影机non-metric camera非量测摄影机non-metric camera菲列罗公式Ferrero's formula分版原图Flaps分瓣投影interrupted projection分层layer分层设色表graduation of tints分层设色法hypsometric layer分潮Constituent 分潮Constituent分潮迟角epoch of partial tide分潮振幅amplitude of partial tide分带纠正zonal rectification分带子午线zone dividing meridian分类器classifier分类器classifier分区统计图表法cartodiagram method分区统计图表法chorisogram method分区统计图表法cartodiagram method分区统计图表法chorisogram method分区统计图表法，*等值区域法cartogram method分区统计图表法，*等值区域法cartogram method分区统计图法，*等值区域法choroplethic method分区统计图法，*等值区域法choroplethic method分色，*分色参考图color separation分色，*分色参考图color separation分析地图analytical map风讯信号杆wind signal pole浮标Buoy浮雕影像地图picto-line map浮子验潮仪float gauge符号化symbolization辐射三角测量radial triangulation辐射线格网radial positioning grid辐射校正radiometric correction辐射遥感器radiation sensor负荷潮load tide负片negative负片negative附参数条件平差condition adjustment with parameters附参数条件平差condition adjustment with parameters附合导线connecting traverse附合导线connecting traverse附合水准路线annexed leveling line附加位additional potential附条件参数平差，*附条件间接平差parameter adjustment with conditions复测法repetition method复垦测量reclaimation survey复照仪reproduction camera副台slave station概率判决函数Probability decision function 概然误差probable error干出礁covers and uncovers rock干出礁covers and uncovers rock干涉雷达INSAR干涉雷达interometry SAR感光sensitization感光材料sensitive material感光测定sensitometry感光度sensitivity感光特性曲线characteristic curve of photographic transmission感光特性曲线characteristic curve of photographic transmission感受效果perceptual effect港界harbor boundary港口port港口工程测量harbor engineering survey港湾测量harbor survey港湾锚地图集harbor/anchorage atlas港湾图harbor chart高差仪statoscope高程height高程导线height traverse高程点elevation point高程基准height datum高程控制测量vertical control survey高程控制点vertical control point高程控制网vertical control network高程系统height system高程异常height anomaly高程中误差mean square error of height高度角altitude angle高度角elevation angle高密度数字磁带HDDT高密度数字磁带high density digital tape高斯-克吕格投影Gauss-Krüger projection 高斯平面子午线收敛角Gauss grid convergence高斯平面坐标系Gauss plane coordinate system高斯投影方向改正arc-to-chord correction in Gauss projection高斯中纬度公式Gauss midlatitude formula 格网单元cell格网单元cell跟踪数字化tracing digitizing工厂现状图测量survey of present state at industrial site工程测量engineering survey工程测量学engineering surveying工程经纬仪engineer's theodolite工程控制网engineering control network工程摄影测量engineering photogrammetry 工程水准仪engineer's level工业测量系统industrial measuring system 工业摄影测量industrial photogrammetry公路工程测量road engineering survey功率谱power spectrum共面方程coplanarity equation共面方程coplanarity equation共线方程collinearity equation共线方程collinearity equation构像方程imaging equation古地图ancient map骨架航线，*构架航线,测控条control strip 骨架航线，*构架航线,测控条control strip 固定平极fixed mean pole固定误差fixed error固定相移fixed phase drift固体潮[solid] Earth tide固体激光器solid-state laser管道测量pipe survey管道综合图synthesis chart of pipelines贯通测量holing through survey贯通测量breakthrough survey惯性测量系统inertial surveying system惯性测量系统ISS惯性坐标系inertial coordinate system惯用点conventional name惯用点conventional name灌区平面布置图irrigation layout plan光电测距导线EDM traverse光电测距仪electro-optical distancemeasuring instrument光电等高仪photoelectric astrolabe光电遥感器photoelectric sensor光电中星仪photoelectric transit instrument 光碟，*光盘CD光碟，*光盘compact disc光碟，*光盘CD光碟，*光盘compact disc光谱感光度，*光谱灵敏度spectral sensitivity光圈,*有效孔径Aperture光圈号数f-number光圈号数stop-number光束法空中三角测量bundle aerial triangulation光栅grating广播星历broadcast ephemeris归化纬度reduced latitude归心改正correction for centering归心改正correction for centering归心元素elements of centring龟纹moire规划地图planning map规矩线register mark国际测绘联合会IUSM国际测量师联合会Fédération Internationale des Géométres国际测量师联合会FIG国际大地测量协会IAG国际大地测量协会International Association of Geodesy国际大地测量与地球物理联合会International Union of Geodesy and Geophysics国际大地测量与地球物理联合会IUGG国际地球参考架international terrestrial reference frame国际地球参考架ITRF国际地球自转服务局IERS国际地球自转服务局International Earth Rotation Service国际海道测量组织IHO国际海道测量组织International Hydrography Organization 国际海图international chart国际航天测量与地球学学院ITC国际矿山测量学会International Society of Mine Surveying国际摄影测量与遥感学会International Society for Photogrammetry and Remote S国际摄影测量与遥感学会ISPRS国际天球参考架ICRF国际天球参考架international celestial reference frame国际协议原点CIO国际协议原点Conventional International Origin国际协议原点CIO国际协议原点Conventional International Origin国际原子时IAT国际原子时international atomic time国际制图协会ICA国际制图协会International Cartographic Association国家地图集national atlas国家地图集national atlas国家基础地理信息系统national fundamental geographic information system 国家基础地理信息系统national fundamental geographic information system 海[洋]图集marine atlas海岸coast海岸coast海岸地形测量coast topographic survey海岸地形测量coast topographic survey海岸图coast chart海岸图coast chart海岸线coast line海岸线coast line海岸性质nature of the coast海岸性质nature of the coast海拔height above sea level海道测量，*水道测量hydrographic survey 海道测量学，*水道测量学hydrography海底成像系统seafloor imaging system海底地貌submarine geomorphology海底地貌图submarine geomorphologic chart海底地势图submarine situation chart海底地形测量bathymetric surveying海底地形图bathymetric chart海底地质构造图submarine structural chart 海底电缆submarine cable海底管道submarine pipeline海底控制网submarine control network海底倾斜改正seafloor slope correction海底声标acoustic beacon on bottom海底施工测量submarine construction survey海底隧道测量submarine tunnel survey海福德椭球Hayford ellipsoid海军导航卫星系统Navy Navigation Satellite System海军导航卫星系统NNSS海军导航卫星系统Navy Navigation Satellite System海军导航卫星系统NNSS海军勤务测量naval service survey海军勤务测量naval service survey海控点hydrographic control point海流计current meter海流计current meter海面地形sea surface topography海区界线sea area bounding line海区资料调查sea area information investigation海区总图general chart of the sea海图Chart海图Chart海图比例尺Chart scale海图比例尺Chart scale海图编号Chart numbering海图编号Chart numbering海图编制Chart compilation海图编制Chart compilation海图标题Chart title海图标题Chart title海图大改正Chart large correction海图大改正Chart large correction海图分幅Chart subdivision海图分幅Chart subdivision海图改正Chart correction 海图改正Chart correction海图投影Chart projection海图投影Chart projection海图图廓Chart boarder海图图廓Chart boarder海图图式symbols and abbreviations on chart 海图小改正Chart small correction海图小改正Chart small correction海图制图charting海图制图charting海图注记lettering of chart海洋测绘marine charting海洋测绘数据库marine charting database海洋测量marine survey海洋测量定位marine survey positioning海洋磁力测量marine magnetic survey海洋磁力图marine magnetic chart海洋磁力异常marine magnetic anomaly海洋大地测量marine geodetic survey海洋大地测量学marine geodesy海洋工程测量marine engineering survey海洋划界测量marine demarcation survey海洋环境图marine environmental chart海洋气象图marine meteorological chart海洋生物图marine biological chart海洋水文图marine hydrological chart海洋水准测量marine leveling海洋卫星Seasat海洋质子采样器marine bottom proton sampler海洋质子磁力仪marine proton magnetometer海洋重力测量marine gravimetry海洋重力仪marine gravimeter海洋重力异常marine gravity anomaly海洋重力异常图Chart of marine gravity anomaly海洋重力异常图Chart of marine gravity anomaly海洋专题测量marine thematic survey海洋资源图marine resource chart航标表list of lights航带法空中三角测量strip aerial triangulation航道channel航道channel航道fairway航道图navigation channel chart航道图navigation channel chart航高flight height航高flying height航海天文历nautical almanac航海天文历nautical almanac航海通告NM航海通告notice to mariners航海通告NM航海通告notice to mariners航海图nautical chart航海图nautical chart航迹track航空摄谱仪aerial spectrograph航空摄影aerial photography航空摄影测量aerial photogrammetry航空摄影测量aerophotogrammetry航空摄影机aerial camera航空图aeronautical chart航空遥感aerial remote sensing航空重力测量airborne gravity measurement 航路指南sailing directions航路指南SD航摄计划flight plan of aerial photography航摄领航navigation of aerial photography航摄领航navigation of aerial photography航摄漏洞aerial photographic gap航摄软片aerial film航摄像片,航空像片aerial photograph航摄质量quality of aerophotography航速speed航天飞机space shuttle航天摄影space photography航天摄影测量，*太空摄影测量space photogrammetry航天遥感space remote sensing航向course航向course航向倾角longitudinal tilt航向倾角pitch航向重叠end overlap 航向重叠fore-and-aft overlap航向重叠forward overlap航向重叠longitudinal overlap航行通告notice to navigator航行通告notice to navigator航行图sailing chart航行障碍物navigation obstruction航行障碍物navigation obstruction合成地图synthetic map合成孔径雷达SAR合成孔径雷达synthetic aperture radar合点控制vanishing point control河道整治测量river improvement survey河外致密射电源，*类星体extragalactic compact radio source核点epipole核面epipolar plane核线epipolar line核线epipolar ray核线相关epipolar correlation盒式分类法box classification method黑白片black-and-white film黑白摄影black-and-white photography恒时钟sidereal clock恒星摄影机stellar camera恒星时sidereal time恒星中天测时法method of time determination by star transit横断面测量cross-section survey横断面测量cross-section survey横断面图cross-section profile横断面图cross-section profile横轴投影transverse projection红外测距仪infrared EDM instrument红外辐射计infrared radiometer红外片infrared film红外扫描仪infrared scanner红外摄影infrared photography红外图像infrared imagery红外遥感infrared remote sensing后方交会resection湖泊测量lake survey互补色地图anaglyphic map互补色镜anaglyphoscope。
外文翻译----超声波距离传感器
英文原文：Ultrasonic distance sensorDesign Principles:Ultrasonic sensor is developed from the use of the characteristics of ultrasonic sensors.Higher frequency ultrasound is a mechanical acoustic waves, the transducer excitation voltage of the chip occurs in the vibration, and it has a high frequency, short wavelength, diffraction is small, especially the direction of good, to be the ray and the orientationcommunication and so on.Ultrasound on liquids and solids through a great ability, especially in opaque solids in the sun, which can penetrate tens of meters in depth.Ultrasonic impurities or sub-interface will encounter a significant reflection reflection into the echo formation, hit moving objects can produce the Doppler effect.Therefore widely used in industrial ultrasonic inspection, defense, biomedical and other aspects of the ultrasound as a means of detection, must generate and receive ultrasound ultrasound.To fulfill this function the device is ultrasonic sensors, traditionally known as the ultrasonic transducer or ultrasonic probe.The main performance indicators of ultrasonic sensors:Ultrasound probe is the core of its plastic jacket or a piece of metal in the piezoelectric jacket.Constitute the chip can have many kinds of materials.Chip size, such as diameter and thickness also vary, so the performance of each probe is different, we used to know it in advance before the performance.The main performance indicators of ultrasonic sensors include: (1) operating frequency.Frequency is the resonant frequency of the piezoelectric wafer.When added to the AC voltage across it, and the frequency of the resonant frequency of the chip are equal, the maximum energy output, sensitivity is highest.(2) operating temperature.Since the Curie point of piezoelectric materials generally high, particularly when using the power of diagnostic ultrasound probe small, so the temperature is relatively low, you can work long hours without producing failure.Medical ultrasound probe temperature is relatively high, requiring a separate cooling device.(3) sensitivity.Depends primarily on manufacturing the chip itself.Electromechanical coupling coefficient, high sensitivity; the other hand, low sensitivity.Structure and Working Principle:When voltage is applied to piezoelectric ceramic, it will with the voltage and frequency of changes in the mechanical deformation.On the other hand, when the vibration of piezoelectric ceramics, it will generate a ing this principle, when given by the two piezoelectric ceramic or a piezoelectric ceramic and a vibrator, sheet metal, the so-called bimorph element called the imposition of an electricalsignal, it will emit ultrasonic vibration due to bending.Conversely, when applied to the bimorph ultrasonic devices, it will generate an electrical signal.Based on the above role, it can be used as a piezoelectric ceramic ultrasonic sensors.Such as ultrasonic sensors, a compound vibrator was flexibility on a fixed base.The vibrator is a composite resonator, and by a metal plate and a piezoelectric bimorph element consisting of a combination vibrator.Resonator and trumpets the purpose of effective radiation generated by the ultrasonic vibrations, and can effectively make ultrasonic vibrator gathered in a central location.Outdoor uses ultrasonic sensors must have a good seal in order to prevent dew, rain and dust intrusion.Piezoelectric ceramic is fixed on the top of the metal box inside the body.Base fixed in the open end of box, and covered with resin.Of ultrasonic sensors for industrial robots, the requirements to achieve an accuracy of 1mm, and has strong ultrasonic ponents using conventional bimorph bending vibration of the vibrator, in the case of frequencies above 70kHz, it is impossible to achieve this purpose.Therefore, in the high-frequency probe, you must use the vertical thickness vibration mode piezoelectric ceramic.In this case, the acoustic impedance of piezoelectric ceramics and the air becomes very important match.Acoustic impedance of piezoelectric ceramic 2.6 × 107kg/m2s, while the acoustic impedance of air is 4.3×102kg/m2s.5different power piezoelectric vibration will result in substantial losses of radiation on the surface.Adhesion of a special material on the piezoelectric ceramic, matching layers, as the sound can be achieved with air impedance match.This structure allows up to several hundred kHz ultrasonic sensors in the frequency of the circumstances, still be able to work properly.Ultrasonic distance sensor technology and application of the principle:Ultrasonic distance sensor can be widely used in Level (level) monitoring, robot collision avoidance, a variety of ultrasonic proximity switches, and related areas such as anti-theft alarm, reliable, easy installation, waterproof, small launch angle, high sensitivity,display instruments to facilitate connections with industry, also provides a larger probe launch angle.1, ultrasonic range finder: ultra-high energy acoustic ranging techniques to ultrasonic distance measurement techniques have been major breakthroughs, it not only broadens the applications of ultrasonic distance measurement technology (for very poor working conditions), and the use of smart regulation technology,greatly improve the reliability of ultrasonic products, and performance indicators, allowing users to worry about without looking back.Excellent echo processing technology ,5-50KHZ of ultra high strength level meter wave frequency to the maximum range up to 120 meters for medium temperature is -20℃-+175℃.Intelligent automatic adjustment made wave frequency, automatic temperature compensation function to work more stable and reliable.HpAWK series also has a flexible work (the power supply for 12VDC, 24VDC, 110V AC, 220V AC; two / three / four-wire system can be freely combined in the same instrument.It also has advanced remote GSM, CDMA, Internet debugging features, enabling users to readily available technical support.中文译文:超声波距离传感器设计原理:超声波传感器是利用超声波的特性研制而成的传感器。
超声波测距仪(实时显示声光报警)_毕业设计论文报告
超声波测距仪(实时显示声光报警)毕业设计论文报告摘要机器人通过其感知系统觉察前方障碍物距离和周围环境来实现绕障、自动寻线、测距等功能。
超声波测距相对其他测距技术而言成本低廉，测量精度较高，不受环境的限制，应用方便，将它与红外传感器等结合共同实现机器人寻线和绕障功能。
本文介绍了基于STC89C51的超声波测距系统，阐述了超声波测距系统的硬件设计、软件设计及其工作原理。
该设计主要由单片机控制模块、数码管显示模块、DS18B20温度补偿模块以及声光报警模块等构成。
利用超声波的反射原理，计算超声波在空气中的传播时间的一半再乘以经过温度补偿修正后的速度就可以得出障碍物到传感器之间的距离，并在数码管显示出来。
同时，该系统在测量距离小于10cm时能进行声光报警。
该系统具有硬件电路简单、成本低、工作可靠、功耗低、体积小、误差小、有良好的测量精度等优点。
目前，超声波清洗技术、雷达技术等在医学、军事上占据着重要地位，因此研究超声波技术具有一定的研究意义。
本设计作品基本满足设计的要求，有一定的推广性，同时针对不足，如测量距离过小等，文章在最后提出了一些改进性能的可行性方案。
关键字：单片机；传感器；超声波测距；温度补偿Abstractrobot through its perception system to detect obstacles that in front of the road and the surrounding environment to achieve the distance around the barrier, auto hunt, range and other functions.Ultrasonic Ranging in terms to other ranging technology is low-cost, high accuracy, without environmental constraints, and convenient, it will be combined together with infrared sensors achieve robot hunt around the barrier function.This article describes the ultrasonic ranging system based on STC89C51,which e laborate ultrasonic Ranging System hardware design, software design and its working principle.The design is mainly controlled by the microcontroller module,LED display module, DS18B20 temperature compensation module, as well as sound and light alarm module ing the principle of reflection of the ultrasonic wave,Calculate the ultrasonic propagation time in the air in half and then multiplied by the speed after the correction of the temperature compensation that can be drawn between the obstacle to the sensor distance,And digital display.Secondly, the sound and light alarm when the system measuring distance less than 10cm .The system has an Advantage of Simple hardware circuit, low cost, reliable, low power consumption, small size, the error is small, h ave a good measurement accuracy, etc..At present, the ultrasonic cleaning technology, radar technology in medicine, the military occupies an important position,so the research ultrasound technology has a certain significance. This design works basically meet the design requirements, there are certain promotional, while for deficiencies, such as measuring the distance is too small, etc., the article concludes with a number of improvements in the performance of the feasibility of the program.KeyWords:MCU;Sensor;Ultrasonic Ranging;Temperature compensation目录摘要 0Abstract (1)第一章绪论 (4)1.1课题的研究背景 (4)1.2超声波在国内外的发展现状 (6)1.3研究目的和意义 (6)1.4研究内容 (6)1.5 论文结构 (7)第二章系统方案设计 (8)2.1设计要求 (8)2.2设计方案 (8)第三章硬件设计 (10)3.1 AT89C51单片机简介 (10)3.1.1 AT89C51各引脚的含义和功能 (11)3.2系统硬件设计组成部分 (13)3.2.1 AT89C51单片机最小系统 (13)3.2.2 数码管显示模块 (13)3.2.3超声波发射接收模块 (14)3.2.4声光报警模块 (20)3.2.5复位电路 (20)3.2.6 DS18B20温度补偿电路 (22)3.2.6.1 DS18B20内部结构及测温原理 (23)3.2.6.2 DS18B20的封装形式及引脚功能 (24)3.2.6.3 DS18B20的供电方式 (25)3.2.7 +5V电源模块 (26)第四章软件设计 (27)4.1软件整体设计 (28)4.2系统主要模块程序设计 (29)4.2.1超声波发射程序及接收中断子程序 (29)4.2.2 DS18B20访问程序 (29)第五章调试与检测 (31)5.1硬件测试 (31)5.2 软件测试 (32)5.3结果分析 (32)5.4误差来源 (32)5.5 解决方案 (33)5.6本设计所做工作 (33)总结与展望 (35)谢词 (36)参考文献 (36)附录1 电路原理图及PCB图 (38)附录2 程序清单 (40)第一章绪论超声波以其指向性好、穿透能力强、能量消耗缓慢、环境污染小等优点，因而超声波常用于距离测量。
超声波测距外文翻译
超声波测距摘要：本演示处理了测量距离的超声波传感器在当前环境中的准确性。
作为一个测量传感器的选择SFR08型配备了允许寻址的I ²C 通信接口。
这一事实使得创建传感器阵列变得简单。
控制和可视化系统是基于PC PC。
NI USB 8451是作为通信卡使用的。
验证测量的目标是确定实际的传感器精度，特别是当测量较长的距离。
当评估传感器的精度时，不包括在所测量的数据的温度补偿。
关键词：超声波传感器，I ²C 通信接口，虚拟仪器1 1 简介简介超声波传感器通常用于自动化的任务来测量距离，位置变化，电平测量，如存在检测器或在特殊应用中，例如，当测量透明材料的纯度。
它们是基于测量超声波的传播时间的原则。
这一原则确保可靠的检测是独立的颜色渲染的对象或其表面的设计和类型。
它可以可靠地检测甚至液体，散装材料，透明物体，玻璃等材料。
他们使用的另一个参数是他们在侵略性的环境中使用，不是非常敏感的污垢和测量距离的可能性。
超声波传感器在许多机械设计中被制造。
对于实验室用途，用于发射器和接收器单独或在一个单一的简单的住房，对于工业用途，往往建造坚固的金属外壳。
有些类型允许您使用电位计或数字来调整灵敏度。
此外，输出可以在统一的版本中或直接以数字形式的模拟信号直接中。
就传感器来说，可以通过通信接口连接到PC ，它是可以设置所有传感器的工作范围和测量距离的详细参数。
2 2 超声测量超声测量超声对环境中的声音具有相似的传播特性。
这是机械振动的粒子环境。
超声波可以在气体、液体和固体中传播。
对于超声波通常被认为是一个频率高于20千赫的声音。
千赫的声音。
根据超声波的用途可以分为两类： 主动超声：当应用表现出物理或化学效应。
生成的输出达到更高的值。
超声波用于清洁，焊接，钻孔等。
被动超声；输出是在低得多（通常是小）值产生的对比度。
他的主要应用领域是测量距离，检测材料的缺陷和材料的厚度，测量液体和气体的流量，以及医疗保健的诊断。
毕业论文外文文献翻译Ultrasonic-ranging-system-design超声测距系统设计
毕业设计（论文）外文文献翻译文献、资料中文题目：超声测距系统设计文献、资料英文题目：Ultrasonic ranging system design 文献、资料来源：文献、资料发表（出版）日期：院（部）：专业：班级：姓名：学号：指导教师：翻译日期： 2017.02.14Ultrasonic ranging system designPublication title: Sensor Review. Bradford: 1993.Vol.ABSTRACT: Ultrasonic ranging technology has wide using worth in many fields, such as the industrial locale, vehicle navigation and sonar engineering. Now it has been used in level measurement, self-guided autonomous vehicles, fieldwork robots automotive navigation, air and underwater target detection, identification, location and so on. So there is an important practicing meaning to learn the ranging theory and ways deeply. To improve the precision of the ultrasonic ranging system in hand, satisfy the request of the engineering personnel for the ranging precision, the bound and the usage, a portable ultrasonic ranging system based on the single chip processor was developed.Keywords: Ultrasound, Ranging System, Single Chip Processor1. IntroductiveWith the development of science and techno logy, the improvement of people’s standard of living, speeding up the development and construction of the city. Urban drainage system have greatly developed their situation is construction improving. However, due to historical reasons many unpredictable factors in the synthesis of her time, the city drainage system. In particular drainage system often lags behind urban construction. Therefore, there are often good building excavation has been building facilities to upgrade the drainage system phenomenon. It brought to the city sewage, and it is clear to the city sewage and drainage culvert in the sewage treatment system. Comfort is very important to people’s lives. Mobile robots designed to clear the drainage culvert and the automatic control system Free sewage culvert clear guarantee robots, the robot is designed to clear the culvert sewage to the core. Control system is the core component of the development of ultrasonic range finder. Therefore, it is very important to design a good ultrasonic range finder.2. A principle of ultrasonic distance measurementThe application of AT89C51:SCM is a major piece of computer components are integrated into the chip micro-computer. It is a multi-interface and counting on the micro-controller integration, and intelligence products are widely used in industrial automation. and MCS-51 microcontroller is a typical and representative.Microcontrollers are used in a multitude of commercial applications such as modems, motor-control systems, air conditioner control systems, automotive engine and among others. The high processing speed and enhanced peripheral set of these microcontrollers make them suitable for such high-speed event-based applications. However, these critical application domains also require that these microcontrollers are highly reliable. The high reliability and low market risks can be ensured by a robust testing process and a proper tools environment for the validation of these microcontrollers both at the component and at the system level. Intel Plaform Engineering department developed an object-oriented multi-threaded test environment for the validation of its AT89C51 automotive microcontrollers. The goals of this environment was not only to provide a robust testing environment for the AT89C51 automotive microcontrollers, but to develop an environment which can be easily extended and reused for the validation of several other future microcontrollers. The environment was developed in conjunction with Microsoft Foundation Classes(AT89C51).1.1 Features* Compatible with MCS-51 Products* 2Kbytes of Reprogrammable Flash MemoryEndurance: 1,000Write/Erase Cycles* 2.7V to 6V Operating Range* Fully Static operation: 0Hz to 24MHz* Two-level program memory lock* 128x8-bit internal RAM* 15programmable I/O lines* Two 16-bit timer/counters* Six interrupt sources*Programmable serial UART channel* Direct LED drive output* On-chip analog comparator* Low power idle and power down modes1.2 DescriptionThe AT89C2051 is a low-voltage, high-performance CMOS 8-bit microcomputer with 2Kbytes of flash programmable and erasable read only memory (PEROM). The device is manufactured using Atmel’s high density nonvolatile memory technology and is compatible with the industry standard MCS-51 instruction set and pinout. By combining a versatile 8-bit CPU with flash on a monolithic chip, the Atmel AT89C2051 is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications.The AT89C2051 provides the following standard features: 2Kbytes of flash,128bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five vector two-level interrupt architecture, a full duplex serial port, a precision analog comparator, on-chip oscillator and clock circuitry. In addition, the AT89C2051 is designed with static logicfor operation down to zero frequency and supports two software selectable power saving modes. The idle mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt system to continue functioning. The power down mode saves the RAM contents but freezer the oscillator disabling all other chip functions until the next hardware reset.1.3 Pin Configuration1.4 Pin DescriptionVCC Supply voltage.GND Ground.Prot 1Prot 1 is an 8-bit bidirectional I/O port. Port pins P1.2 to P1.7 provide internal pullups. P1.0 and P1.1 require external pullups. P1.0 and P1.1 also serve as the positive input (AIN0) and the negative input (AIN1), respectively, of the on-chip precision analog comparator. The port 1 output buffers can sink 20mA and can drive LED displays directly. When 1s are written to port 1 pins, they can be used as inputs. When pins P1.2 to P1.7 are used as input and are externally pulled low, they will source current (IIL) because of the internal pullups.Port 3Port 3 pins P3.0 to P3.5, P3.7 are seven bidirectional I/O pins with internal pullups. P3.6 is hard-wired as an input to the output of the on-chip comparator and is not accessible as a general purpose I/O pin. The port 3 output buffers can sink 20mA. When 1s are written to port 3 pins they are pulled high by the internal pullups and can be used as inputs. As inputs, port 3 pins that are externally being pulled low will source current (IIL) because of the pullups.Port 3 also serves the functions of various special features of the AT89C2051 as listed below.1.5 Programming the FlashThe AT89C2051 is shipped with the 2 Kbytes of on-chip PEROM code memory array in the erased state (i.e., contents=FFH) and ready to be programmed. The code memory array is programmed one byte at a time. Once the array is programmed, to re-program any non-blank byte, the entire memory array needs to be erased electrically.Internal address counter: the AT89C2051 contains an internal PEROM address counter which is always reset to 000H on the rising edge of RST and is advanced applying a positive going pulse to pin XTAL1.Programming algorithm: to program the AT89C2051, the following sequence is recommended.1. power-up sequence:Apply power between VCC and GND pins Set RST and XTAL1 to GNDWith all other pins floating , wait for greater than 10 milliseconds2. Set pin RST to ‘H’ set pin P3.2 to ‘H’3. Apply the appropriate combination of ‘H’ or ‘L’ logic to pins P3.3, P3.4, P3.5,P3.7 to select one of the programming operations shown in the PEROM programming modes table.To program and Verify the Array:4. Apply data for code byte at location 000H to P1.0 to P1.7.5.Raise RST to 12V to enable programming.5. Pulse P3.2 once to program a byte in the PEROM array or the lock bits. The byte-write cycle is self-timed and typically takes 1.2ms.6. To verify the programmed data, lower RST from 12V to logic ‘H’ level and set pins P3.3 to P3.7 to the appropriate levels. Output data can be read at the port P1 pins.7. To program a byte at the next address location, pulse XTAL1 pin once to advance the internal address counter. Apply new data to the port P1 pins.8. Repeat steps 5 through 8, changing data and advancing the address counter for the entire 2 Kbytes array or until the end of the object file is reached.9. Power-off sequence: set XTAL1 to ‘L’ set RST to ‘L’Float all other I/O pins Turn VCC power off2.1 The principle of piezoelectric ultrasonic generatorPiezoelectric ultrasonic generator is the use of piezoelectric crystal resonators to work. Ultrasonic generator, the internal structure as shown, it has two piezoelectric chip and a resonance plate. When it’s two plus pulse signal, the frequency equal to the intrinsic piezoelectric oscillation frequency chip, the chip will happen piezoelectric resonance, and promote the development of plate vibration resonance, ultrasound is generated. Conversely, it will be for vibration suppression of piezoelectric chip, the mechanical energy is converted to electrical signals, then it becomes the ultrasonic receiver.The traditio nal way to determine the moment of the echo’s arrival is based on thresholding the received signal with a fixed reference. The threshold is chosen well above the noise level, whereas the moment of arrival of an echo is defined as the first moment the echo signal surpasses that threshold. The intensity of an echo reflecting from an object strongly depends on the object’s nature, size and distance from the sensor. Further, the time interval from the echo’s starting point to the moment when it surpasses the threshold changes with the intensity of the echo. As a consequence, a considerable error may occur even two echoes with different intensities arriving exactly at the same time will surpass the threshold at different moments. The stronger one will surpass the threshold earlier than the weaker, so it will be considered as belonging to a nearer object.2.2 The principle of ultrasonic distance measurementUltrasonic transmitter in a direction to launch ultrasound, in the moment to launch the beginning of time at the same time, the spread of ultrasound in the air, obstacles on his way to return immediately, the ultrasonic reflected wave received by the receiverimmediately stop the clock. Ultrasound in the air as the propagation velocity of 340m/s, according to the timer records the time t, we can calculate the distance between the launch distance barrier(s), that is: s=340t / 23. Ultrasonic Ranging System for the Second Circuit DesignSystem is characterized by single-chip microcomputer to control the use of ultrasonic transmitter and ultrasonic receiver since the launch from time to time, single-chip selection of 875, economic-to-use, and the chip has 4K of ROM, to facilitate programming.3.1 40 kHz ultrasonic pulse generated with the launchRanging system using the ultrasonic sensor of piezoelectric ceramic sensorsUCM40, its operating voltage of the pulse signal is 40kHz, which by the single-chip implementation of the following procedures to generate.puzel: mov 14h, # 12h; ultrasonic firing continued 200msHere: cpl p1.0; output 40kHz square wavenop;nop;nop;djnz 14h, here;retRanging in front of single-chip termination circuit P1.0 input port, single chip implementation of the above procedure, the P1.0 port in a 40kHz pulse output signal, after amplification transistor T, the drive to launch the first ultrasonic UCM40T, issued 40kHz ultrasonic pulse, and the continued launch of 200ms. Ranging the right and the left side of the circuit, respectively, then input port P1.1 and P1.2, the working principle and circuit in front of the same location.3.2 Reception and processing of ultrasonicUsed to receive the first launch of the first pair UCM40R, the ultrasonic pulse modulation signal into an alternating voltage, the op-amp amplification IC1A and after polarization IC1B to IC2. IC2 is locked loop with audio decoder chip LM567, internal voltage-controlled oscillator center frequency of f0=1/1.1R8C3, capacitor C4 determinetheir target bandwidth. R8-conditioning in the launch of the high jump 8 feet into a low-level, as interrupt request signals to the single-chip processing.Ranging in front of single-chip termination circuit output port INT0 interrupt the highest priority, right or left location of the output circuit with output gate IC3A access INT1 port single-chip, while single-chip P1.3 and P1.4 received input IC3A, interrupted by the process to identify the source of inquiry to deal with, interrupt priority level for the first left right after. Part of the source code is as follows:Receivel: push pswpush accclr ex1; related external interrupt 1jnb p1.1, right; P1.1 pin to 0, ranging from right to interrupt service routine circuitjnb p1.2, left; P1.2 pin to 0, to the left ranging circuit interrupt service routinereturn: SETB EX1; open external interrupt 1pop accpop pswretiright: …; right location entrance circuit interrupt service routineAjmp Returnleft: …; left ranging entrance circuit interrupt service routineAjmp Return3.3 The calculation of ultrasonic propagation timeWhen you start firing at the same time start the single-chip circuitry within the timer T0, the use of timer counting function records the time and the launch of ultrasonic reflected wave received time. When you receive the ultrasonic reflected wave, the receiver circuit output a negative jump in the end of INT0 or INT1 interrupt request generates a signal, single-chip microcomputer in response to external interrupt request, the implementation of the external interrupt service subroutine, read the time difference, calculating the distance. Some of its source code is as follows:RECEIVE0: PUSH PSWPUSH ACCCLR EX0; related external interrupt 0MOV R7, TH0; read the time valueMOV R6, TL0CLR CMOV A, R6SUBB A, #0BBH; calculate the time differenceMOV 31H, A; storage resultsMOV A, R7SUBB A, # 3CHMOV 30H, ASETB EX0; open external interrupt 0\POP ACCPOP PSWRETIFor a flat target, a distance measurement consists of two phases: a coarse measurement and a fine measurement:Step 1: Transmission of one pulse train to produce a simple ultrasonic wave.Step 2: Changing the gain of both echo amplifiers according to equation, until the echo is detected.Step 3: Detection of the amplitudes and zero-crossing times of both echoes.Step 4: Setting the gains of both echo amplifiers to normalize the output at, say 3 volts. Setting the period of the next pulses according to the: period of echoes. Setting the time window according to the data of step 2.Step 5: Sending two pulse trains to produce an interfered wave. Testing the zero-crossing times and amplitudes of the echoes. If phase inversion occurs in the echo, determine to otherwise calculate to by interpolation using the amplitudes near the trough. Derive t sub m1 and t sub m2.Step 6: Calculation of the distance y using equation.4、The ultrasonic ranging system software designSoftware is divided into two parts, the main program and interrupt service routine. Completion of the work of the main program is initialized, each sequence of ultrasonic transmitting and receiving control.Interrupt service routines from time to time to complete three of the rotation direction of ultrasonic launch, the main external interrupt service subroutine to read the value of completion time, distance calculation, the results of the output and so on.5、ConclusionsRequired measuring range of 30cm-200cm objects inside the plane to do a number of measurements found that the maximum error is 0.5cm, and good reproducibility. Single-chip design can be seen on the ultrasonic ranging system has a hardware structure is simple, reliable, small features such as measurement error. Therefore, it can be used not only for mobile robot can be used in other detection system.Thoughts: As for why the receiver do not have the transistor amplifier circuit, because the magnification well, integrated amplifier, but also with automatic gain control level, magnification to 76dB, the center frequency is 38k to 40k, is exactly resonant ultrasonic sensors frequency.6、Parking sensor6.1 Parking sensor introductionReversing radar, full name is "reversing the anti-collision radar, also known as" parking assist device, car parking or reversing the safety of assistive devices, ultrasonic sensors(commonly known as probes), controls and displays (or buzzer)and other components. To inform the driver around the obstacle to the sound or a moreintuitive display to lift the driver parking, reversing and start the vehicle around tovisit the distress caused by, and to help the driver to remove the vision deadends and blurred vision defects and improve driving safety.6.2 Reversing radar detection principleReversing radar, according to high-speed flight of the bats in thenight, not collided with any obstacle principles of design anddevelopment. Probe mounted on the rear bumper, according to different price and brand, the probe only ranging from two, three, four, six, eight,respectively, pipe around. The probe radiation, 45-degree angle up and downabout the search target. The greatest advantage is to explore lower than the bumper of the driver from the rear window is difficult to see obstacles, and the police, suchas flower beds, children playing in the squatting on the car.Display parking sensor installed in the rear view mirror, it constantlyremind drivers to car distance behindthe object distance to the dangerous distance, the buzzer starts singing, allow the driver to stop. When the gear lever linked into reverse gear, reversing radar, auto-start the work, the working range of 0.3 to 2.0 meters, so stop when the driver was very practical. Reversing radar is equivalent to an ultrasound probe for ultrasonic probe can be divided into two categories: First, Electrical, ultrasonic, the second is to use mechanical means to produce ultrasound, in view of the more commonly used piezoelectric ultrasonic generator, it has two power chips and a soundingboard, plus apulse signal when the poles, its frequency equal to the intrinsic oscillation frequency of the piezoelectric pressure chip will be resonant and drivenby the vibration of the sounding board, the mechanical energy into electrical signal, which became the ultrasonic probe works. In order to better study Ultrasonic and use up, people have to design and manufacture of ultrasonic sound, the ultrasonic probe tobe used in the use of car parking sensor. With this principle in a non-contactdetection technology for distance measurement is simple, convenient and rapid, easyto do real-time control, distance accuracy of practical industrial requirements. Parking sensor for ranging send out ultrasonic signal at a givenmoment, and shot in the face of the measured object back to the signal wave, reversing radar receiver to use statistics in the ultrasonic signal from the transmitter to receive echo signals calculate the propagation velocity in the medium, which can calculate the distance of the probe and to detect objects.6.3 Reversing radar functionality and performanceParking sensor can be divided into the LCD distance display, audible alarm, and azimuth directions, voice prompts, automatic probe detection function is complete, reversing radar distance, audible alarm, position-indicating function. A good performance reversing radar, its main properties include: (1) sensitivity, whether theresponse fast enough when there is an obstacle. (2) the existence of blind spots. (3) detection distance range.6.4 Each part of the roleReversing radar has the following effects: (1) ultrasonic sensor: used tolaunch and receive ultrasonic signals, ultrasonic sensors canmeasure distance. (2) host: after the launch of the sine wave pulse to the ultrasonic sensors, and process the received signal, to calculate the distance value, the data and monitor communication. (3) display or abuzzer: the receivinghost from the data, and display the distance value and provide differentlevels according to the distance from the alarm sound.6.5 Cautions1, the installation height: general ground: car before the installation of 45 ~55: 50 ~ 65cmcar after installation. 2, regular cleaningof the probe to prevent the fill. 3, do not use the hardstuff the probe surface cover will produce false positives or ranging allowed toprobe surface coverage, such as mud. 4, winter to avoid freezing. 5, 6 / 8 probe reversing radar before and after the probe is not free to swap may cause the ChangMing false positive problem. 6, note that the probe mounting orientation, in accordance with UP installation upward. 7, the probe is not recommended to install sheetmetal, sheet metal vibration will cause the probe resonance, resulting in false positives.超声测距系统设计原文出处：传感器文摘布拉福德：1993年超声测距技术在工业现场、车辆导航、水声工程等领域具有广泛的应用价值，目前已应用于物位测量、机器人自动导航以及空气中与水下的目标探测、识别、定位等场合。
arduino的超声波测距仪
arduino的超声波测距仪
Arduino的超声波测距仪是一种用于测量物体间的距离的
仪器，它使用声波传播来实现这一目标。
它通过发出的声音的时间差来测量距离。
当超声波发出后，它会在发出声波的物体和受到声波的物体之间形成一个超声波激励场，并且当超声波受到反射回来时，会测量反射回来时间的时间差，然后根据这个时间差来计算出物体之间的距离。
Arduino的超声波测距仪采用了两种技术来检测物体距离，即TOF（Time of Flight）和SONAR（Sound Navigation and Ranging）。
其中，TOF技术是测量声音从发出到反射回来之
间花费的时间，根据这个时间，可以得出物体距离的大概距离。
而SONAR技术则是利用发出的声波穿过空气，碰到阻挡物时
所反射回来的声音，通过计算出反射声音的强度和时间，就可以得出物体距离的大概距离。
Arduino的超声波测距仪也有许多优势，其中一个是可以检测
障碍物的高度，因此可以在航空摄影机中用作测量潜水船深度、轮船高度或飞机高度。
另外，它还可以检测有障碍物的距离，例如在机器人导航系统中可以测量机器人与障碍物的距离，保护机器人和障碍物的安全。
此外，它的测量精度很高，最小单位可以精确到1毫米，可以非常准确地测量物体之间的距离。
最后，它可以在低成本条件下实现，可以大大降低设备更换或维护的成本。
总之，Arduino的超声波测距仪是一种非常实用的仪器，可以
大大提升测量物体距离的精确性和可靠性，运用在航海、机器人导航、航空摄影等领域有着非常重要的意义。
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H8/300L超声波测距仪（原文出处：第1页-第15页）介绍该应用说明介绍了一种使用H8/38024 SLP MCU的测距仪。
由单片机产生40KHz 方波，通过超声波传感器发射出去。
反射的超声波被另外一个传感器接收。
有效距离为6cm到200cm。
1.理论1.1概况在这篇应用说明中，H8/38024F微处理器是作为目标设备被使用的。
由于简单的可移植性，超声波测距仪使用的软件为C语言。
超声波是频率高于可听音的一切高于20kHz的声波。
用于医疗诊断和影像的超声波，频率延长和超过了10兆赫兹，高的频率有短的波长，这使得超声波从物体反射回来更容易。
不幸的是，极高的频率难以产生和测量。
对超声波的检测与测量主要是通过压电式接收机进行的。
超音波普遍应用于防盗系统、运动探测器和车载测距仪。
其他应用包括医疗诊断(人体成像)，清洁(去除油脂和污垢)，流量计(利用多普勒效应)，非破坏性试验(检测材料缺陷)，焊接等各个方面。
1.2软件实施距离的计算要测量超声波传感器接收到回波的时间。
理想的被测对象应该有一个大的面积而且不吸收超声波。
在这个应用说明中使用了38024f的CPU电路板。
图1展示超声波测距仪的工作原理，tmofh (脚63 )是用来传送0.5ms的40kHz的超声波，irq0 ( pin72 ) 是用来探测反射波的。
发送超声波后，计时器C开始追踪Timer Counter C (TCC)的计数数目，以计算物体的距离。
图1.测距仪工作原理1.2.1 发射超声波定时器F是一个具有内置式输出比较功能16位计数器，它还可以用来作为两个独立的8位定时器FH和FL，这里，定时器F是作为两个独立的8位定时器使用。
计时器的FL被初始化为产生中断，而FH在比较匹配发生时触发了tmofh的输出电平。
表1 计时器F的时钟选择对于为定时器的FL，选定内部时钟ø/32。
输出比较寄存器FL装载数据初值为H’FF 。
因此,外部定时器每1.67msec 产生一个中断，计算如下：/2ø晶振频率=，计时器FL 内部时钟周期=322⨯晶振频率=64MHz 8304.9=153.6kHz 中断周期=256kHz6.1531⨯=1.67msec 每隔65msec 开始发射一次超声波，计时器FL 须中断近39次( 65msec / 1.67msec = 39 )，才开始传送。
表2 功能选择FH 产生40kHz 的超声波信号，当计数FH (TCFH)的值达到输出比较寄存器FH(OCRFH)的值时，TMOFH 被触发，输出比较寄存器FH 的值如下计算。
FH 内部时钟选择为ø/4。
计时器FH 内部时钟周期=421⨯晶振频率=MHz8304.98=0.814μsec ，对于40kHz 信号，TMOFH 需要每12.5μs 触发一次：(1/40kHz)/2输出比较寄存器FH(OCRFH)：OCRFH=sec814.0sec 5.12μμ=15.36≈15 因此, 0CRFH 装载H'0F 。
.软件的延时是用来在把63管脚转换成I/O 口P32以停止发送之前，发送0.5ms 的超声波的。
表2 显示了模式寄存器3的端口设置，选择管脚的功能为I/O 口或者TMOFH 输出口。
1.2.2 定时器C 初始化发送完超声波后，定时器C 打开，对超声波的回波时间进行计时。
定时器C 被设置为自动重载，随ø/64的内部时钟向上计时。
表3显示了定时器模式寄存器C 的设置。
需要设置如下。
表3 定时器模式寄存器设置定时器装载寄存器（TLC）之后被装载为H'00，从0开始计时。
计时器C被中断使能，中断使能寄存器中IENTC=1。
如果计时器C（TCC）中的计数值达到H’FF，下一个时钟输入将引起溢出，产生中断。
在计时器C中断溢出子程序中，OVERFLOW_COUNT会保持对溢出数量的跟踪而递增。
当反射回波被接收到时，IRQ0的电压值降低，产生IRQ0中断。
通过对TMC2 ~ TMC0 设置“1“，就没有外部时钟能使计数器增加，计时器被暂停。
之后TCC的值被读取并用于距离计算。
1.2.3 距离计算选择Timer as ø/64,作为内部时钟，距离如下计算：对于计时器C ，1count=6421 晶振频率=MHz8304.9128=13.02μsec 声速=343m/sec=34300cm/sec ，因此，传播1cmde 时间=1sec/34300cm=29.15μsec 通过跟踪计数器的值和计时器C （TCC ）中的溢出次数，物体的距离可以被计算。
举例，计数为55，有一次溢出中断，总计时器=（1×256）+55=311，接收回波的总时间（单位为μsec ）=311×13=4043，传感器与物体的距离=2924043=69.7≈70cm ，除以2是因为超声波的反射（传播距离是物体距离的两倍）。
1.3 硬件实施超声波测距仪的电路在第4章给出。
超声波发射和接收的详细电路在下几章讨论。
1.3.1 发射电路发射电路由几个非门和两个晶体管构成。
第一个非门输出超声波的低电平。
三极管是用来驱动CMOS 变频器的。
两个非门并联在一起以增加发射能力。
传感器正负电极的信号的相角反转180°。
电压比之使用一个非门输入（有正负峰-峰值）高两倍。
图3 发射电路1.3.2接收电路接收电路包括两部分，即信号放大电路和检测电路。
图4 信号放大电路接收到超声波信号后，信号被放大1000倍。
第一级将原始信号放大100（40dB）倍，第二级的增益为10倍（20dB）。
图5 信号检测电路经过信号放大电路后，信号还要经过一个整流检测电路。
该电路由两个1CV5二极管组成。
整流的信号经过三极管。
当无信号时，输出是3.3V（高电平）。
当有信号时，输出降为0V（低电平）。
输出送给H8/38024的IRQ0管脚以便在单片机检测到下降沿时产生中断。
1.3.3 电源需要三种电源测距仪电路板•9V输入电压——对于LM833•3.3V——对于非门74LS04和三极管BC54738024 CPU电路板•5V输入电压——提供给CPU电路板•3.3V——提供给单片机用户必须提供给测距仪电路板9V输入电压，给CPU电路板提供5V输入电压。
1.3.4 超声波传感器在本文中选用Nippon Ceramic公司的超声波发射器（T40-16）和接收器（R40-16）。
T表示发射，R表示接收，40表示传感器的谐振频率40kHz。
超声波传感器的主要特性如下：2.操作38024F CPU电路板按如下的电路连接到超声波测距电路上。
图6 单片机设置与超声波测距仪TMOFH输出超声波产生信号，必须连接到测距仪的TX管脚。
检测信号连接到IRQ0。
因此，分别把38024F CPU电路板上的3脚和12脚连接到超声波测距仪的TX 和RX管脚。
2.1高级终端设置完成硬件设置后，用户还要配置高级终端窗口以显示MCU的探测距离。
COM 端口设置必须根据UART协议和程序中使用的的波特率设定，如图7。
从开始菜单按钮，到Programs（程序）> Accessories（附件）> Communications （通信）> HyperTerminal（高级终端），在高级终端窗口中的文件中选择属性，并且点击Configure（配置），更改端口设置。
图7 PC高级终端设计2.2结果首先，用FD把程序写入单片机。
然后在用户模式中按复位键运行程序。
观察CPU电路板上的LED D1 连续闪烁，指示超声波正在被发射。
通过在传感器前放置一个不吸收超声波的较大物体，用户能够在超级终端窗口看到探测距离，如图9所示。
每次探测（IRQ0产生中断时），在超级中断窗口显示一个小圆点。
在检测到5次相似的读数后，读数被取平均值，距离被计算出来并显示。
本超声波测距仪只能检测6cm到200cm的距离。
图8 在PC HyperTerminal中的结果显示2.3局限2.3.1传感器间的距离设计一个超声波测距仪主要考虑超声波传感器之间的位置。
如果接收超声波传感器是放置在远离发射超声波传感器的地方，它将无法侦测到十分接近的物体。
下面有说明。
图9 对传感器不同距离的说明对于物体1，在较远的情况下，放置接收超声波传感器无论在位置A还是B ,都不会成为一个问题,因为反射超声波将能达到两传感器.但是对于物体2，如果超声波传感器是放置位B, 传感器不会检测超声反映，因为它太远。
在短距离应用中（如微型鼠标），传感器将要放置彼此接近或应稍面对对方.。
本应用说明中,两传感器被放置在距离为3.5cm左右的位置。
2.3.2实际距离测量超声波测距仪通过把接收到回波的时间取半计算距离，然而,实际距离是垂直于超声波传感器的距离。
对近物体，这个误差会较明显，但对远物体，这个误差就微不足道了，如图10 。
- 11 -- 12 -图10 实际距离说明用户可使用下列公式计算出距离来纠正这一错误:两传感器之间的距离）（测量距离实际距离⨯-=212 2.3.3 死区超声波传感器有盲区,使他们无法侦测到目标。
这是传感面与传感最低射程之间的距离。
日本陶瓷公司超声波传感器的死区实验确定为约1厘米。
2.3.4 可测范围最小检测范围取决于死区、单片机响应的局限性，还有电路的布线。
由于距离是通过计时器C 的计数计算出的，准确的取决于计时器C 的开始与结束时间。
另一个限制存在于单片机对中断处理的延时上。
最小与最大探测距离实验定为6cm 和200cm 。
因此程序中需要偏置数据(距离+ 5 )。
用户应该实验决定他们电路的最小探测距离，并给与相应的数值偏置。
最大探测范围是由LM833运算放大器的输入电压决定的。
放大振幅随输入电压的减小而减小，所以，最大探测距离也会减小。
对于本测距电路，LM833运算放大器的最低输入电压为+5V 。
这是由两个二极管的压降决定的。
如果电压低于5V，将没有足够的电压去打开三极管Q3了。
通过减少Lm833运算放大器输入电压到5V，最大探测距离降为150cm。
- 13 -。