多功能转速表的应用(中英文文献)

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多功能电表简介英文

Multi-function watt-hour meter profileSummary1.1DefinitionAccording to the standards of the power industry DL/T614-1997 for multi-function watt-hour meter definition: "anyone who by measuring unit and data processing unit and other components, except for measuring meritorious (reactive) power outside, still have time-sharing, measuring need such as the quantity of two kinds of above function, and can show, storage and output data watt-hour meter" are considered to be multi-function watt-hour meter. Defined clearly in the four: first, by measuring unit and data processing unit composed; Second, can measurement electricity (meritorious or reactive power, or simultaneously measuring meritorious and reactive); Third, can need quantity, can measuring points, display, storage and output data, Fourth, two or more functions. Because are allowed to have two or more function, so the market multi-functional meter differ in thousands ways, but seems along with the increase of the content of the multi-functional meter as users of multi-functional meter understand deeper and deeper, function more and more like is the development trend of multi-function watt-hour meter.1.2 ClassificationMulti-function watt-hour meter can be divided into two kinds: one call electromechanical multi-function watt-hour meter, the electric power measurement meter unit consists of inductive components, Its data processing unit is composed of SCM. Another type of electric power measurement unit and data processing unit is composed by large-scale integrated circuits, called electronic multi-function watt-hour meter, or called solid-state type multi-function watt-hour meter, also some called motionless multi-function watt-hour meter. Electronic multi-function watt-hour meter, and further into two kinds: one kind measurement unit and data processing unit by a single-chip commputer completes, A measuring unit consists of special measuring chips, data processing functions by single-chip commputer completes1.3developmentIn the late 1980s and early 1990s foreign big companies introduced fully electrical multi-function watt-hour meter, like schlumberger, LANDIS & GYR and American GE. In 1993, China, with hunan wei wins electronic Co., LTD is a delegate, with their own patent technology as the foundation, began to be developed their own electronic multi-function watt-hour meter, August 1994 18 first three-phase &four-wire multi-function watt-hour meter research, and through the success of electric and mechanical electronics ministry organization of national technical appraisement. In 1994 September 2 in the first national energy metering exhibition appearance, this table with its distinctive modelling, advanced technology, good performance shocked at home and abroad. 1994 and 1995 two years, neville wins in domestic for two yearsof hard propaganda, cultivating market work, during which discerning power industry experts give wei wins great support, especially in hunan province power, their first win the Wisconsin watch hooked on the Internet, they for the extension of electronic multi-function watt-hour meter has made the contribution to also expensive. In early 1996, in the national implementation of electric ordered reply fee rate and load control, such as electronic multi-functional meter from the new promotion open applications. Electronic multi-functional meter with the expanding sales application, a technical nonstop development, neville wins electronic multi-functional meter successively developed with RS - 485 mouth of communication function, whole voltage-absent record function, many event record function, voltage qualification rate measurement functions, load curve of storage, currently because two controlhaving network modification, led watt-hour meter industry adance, domestic electronic multi-function watt-hour meter industry presents a thriving scence of the current production electronic multi-functional meter factory has increased to a dozen1.4applicationElectronic multi-function watt-hour meter application field is very wide, due to the electronic multi-functional meter has strong communication function, make the multi-functional meter is widely used in far far away, for electricity meter automatic data collection and billing, For the power plant appraisal Internet offer commercial operation, For large enterprise internal energy automation management to lay the foundation.Electronic multi-function watt-hour meter and extended to the birth of dispatching automation, county adjustable integrated automation brought the revolutionary change. YueWei data communications from acquisition pulse. In power data read from afar, meanwhile, can read voltage, current, power of the instantaneous. Substation cancel voltage, current, power transmitter times not be too far away.In electronic multi-function watt-hour meter after appearing, load control concept undergone a fundamental change. Apart from multi-functional meter itself has super power alarm, jump magazine function, itself can be used when the electric quantitative, but the emergence of multi-function watt-hour meter makes negative control terminals RTU design thought undergone a fundamental change, namely again need not take pulse from pulse watt-hour meter, accumulate computation power, but from the rs-five 485 mouth directly read electricity data. The problem was not lost pulse. ZhuTai and measurement meter no agree-on problem didn't also.Distribution network distribution network platform, variable monitoring automation is electronic multi-function watt-hour meter and application domain. Variable Taiwan monitoring parameters: power, power, voltage, current, power factor multi-functional meter can offer and, like voltage qualification rate, zero sequence current, power is frozen with variable assessment index multi-functional meter can also provide, in this sense electronic multi-function watt-hour meter indeed can be called matchs variable monitors. This machine with variable monitor is after the type testing have measuring license. Use electronic multi-functional meter measuring parameters for loss calculation, equilibrium analysis, guiding industry expanding editions, guidingreactive compensation is very fit, very convenient, very accurate.Electronic multi-function watt-hour meter can monitor various methods TouDian: can use distance meter-reading way 24 hours TouDian surveillance, Multi-functional meter reverse meritorious can plan into positive, prevent TouDian; All the pressure loss records help ZhuiBu power; In table dozens of events record as the plane's black box is same, record the occasional glitches and bad behavior.2 Homebred three-phase multi-function watt-hour meter new technology2.1Power, electricity measurement·three-phase harmonic table, active power measurement 0.2 S level, reactive power measurement 0.5 S level, high accuracy of base wave and harmonic meritorious electric power measure, using real-time integral method calculating total meritorious electric energy, through FFT algorithm, provide base wave, harmonic electric energy and harmonic power direction; xu4·impact load energy metering theory and algorithm, applying generalized power theory, define any waveform single-phase and three-phase circuit circuit of power, application of sine circuit power theory, traditional non-sinusoidal circuit power theory and generalized power theory impact load meritorious, reactive power, ShiZai, distortion, three-phase asymmetric power electricity computing, xu4·IIR model based on digital filtering method Hilbert of harmonic reactive power measurement, Hilbert digital filter with advantageous frequency response characteristics, numerical calculation is simple, the calculation of harmonic reactive power, and simulation experiment results only poor 0.02%, xu4·harmonic active power by research trend analysis method, points out: FFT theory has limitations, actual power load, except base wave and integer times frequency components outside, still have the harmonic existence, need to develop between new algorithm watt-hour meter.2.2Three-phase power metering special-purpose chipRobert has base wave/harmonic energy metering three-phase multi-function measurement chip, 16 ∑- train A/D, 24 bit DSP, load dynamic range 1000:1, linearity 0.1%, measuring bandwidth 21st harmonics, integrated temperature sensor, xu4·Hilbert digital filter harmonic measurement using reactive power of three-phase measurement chips; xu4·adopting digital parallel algorithm and reduce crystal frequency technology of the low power three-phase active power measurement chip.2.3Based on the power demand side GPRS communication network management system and its terminalsThe system has a long-distance meter reading, electricity anomaly information alarm, power quality testing, and line loss analysis, reactive voltage management and power load control, and other functions, system index for: concurrent data quantity not small 50,000 to collect, in one pass rate no less than 95%, second mining tong rate not less than the rate of more than 98%, telemetry 99.5% readier less than 100 milliseconds, precision.2.4The real-load remote calibration systemConditions to meet the requirements of places to be measured current transform is through measurement current transformer of secondary circuits access 0.02, 5/0.5 A intermediate transformer, standard meter and the real-load three-phase connection mode and active, reactive power metering is through industrial PC instruction switch, the real-load real-time error through special channel will be sent to the system master station, the whole system error of 0.1%.。

常用仪器仪表中英文对照

常用仪器仪表中英文对照光线示波器 light beam oscillograph光学高温计 optical pyrometer光学显微镜 optical microscope光谱仪器 optical spectrum instrument吊车秤 crane weigher地中衡 platform weigher字符图形显示器 character and graphic display位移测量仪表 displacement measuring instrument巡检测装置 data logger波纹管 bellowsX射线衍射仪 X-ray diffractometerX射线荧光光谱仪 X-ray fluorescence spectrometer力测量仪表 force measuring instrument孔板 orifice plate文丘里管 venturi tube水表 water meter加速度仪 accelerometer可编程序控制器 programmable controller平衡机 balancing machine皮托管 Pitot tube皮带秤 belt weigher长度测量工具 dimensional measuring instrument长度传感器 linear transducer厚度计 thickness gauge差热分析仪 differential thermal analyzer扇形磁场质谱计 sector magnetic field mass spectrometer 料斗秤 hopper weigher核磁共振波谱仪 nuclear magnetic resonance spectrometer 气相色谱仪 gas chromatograph浮球调节阀 float adjusting valve真空计 vacuum gauge动圈仪表 moving-coil instrument基地式调节仪表 local-mounted controller密度计 densitometer液位计 liquid level meter组装式仪表 package system热流计 heat-flow meter热量计 heat flux meter热电阻 resistance temperature热电偶 thermocouple膜片和膜盒 diaphragm and diaphragm capsule调节阀 regulating valve噪声计 noise meter应变仪 strain measuring instrument湿度计 hygrometer声级计 sound lever meter黏度计 viscosimeter转矩测量仪表 torque measuring instrument转速测量仪表 tachometer露点仪 dew-point meter变送器 transmitter减压阀 pressure reducing valve测功器 dynamometer紫外和可见光分光光度计 ultraviolet-visible spectrometer 顺序控制器 sequence controller微处理器 microprocessor温度调节仪表 temperature controller煤气表 gas meter节流阀 throttle valve电子自动平衡仪表 electronic self-balance instrument电子秤 electronic weigher电子微探针 electron microprobe电子显微镜 electron microscope弹簧管 bourdon tube数字式显示仪表 digital display instrument光线示波器 light beam oscillograph光学高温计 optical pyrometer光学显微镜 optical microscope光谱仪器 optical spectrum instrument吊车秤 crane weigher地中衡 platform weigher字符图形显示器 character and graphic display位移测量仪表 displacement measuring instrument巡检测装置 data logger波纹管 bellowsX射线衍射仪 X-ray diffractometerX射线荧光光谱仪 X-ray fluorescence spectrometer 力测量仪表 force measuring instrument孔板 orifice plate文丘里管 venturi tube水表 water meter加速度仪 accelerometer可编程序控制器 programmable controller平衡机 balancing machine皮托管 Pitot tube皮带秤 belt weigher长度测量工具 dimensional measuring instrument长度传感器 linear transducer厚度计 thickness gauge差热分析仪 differential thermal analyzer扇形磁场质谱计 sector magnetic field mass spectrometer 料斗秤 hopper weigher核磁共振波谱仪 nuclear magnetic resonance spectrometer 气相色谱仪 gas chromatograph浮球调节阀 float adjusting valve真空计 vacuum gauge动圈仪表 moving-coil instrument基地式调节仪表 local-mounted controller密度计 densitometer液位计 liquid level meter组装式仪表 package system热流计 heat-flow meter热量计 heat flux meter热电阻 resistance temperature热电偶 thermocouple膜片和膜盒 diaphragm and diaphragm capsule调节阀 regulating valve噪声计 noise meter应变仪 strain measuring instrument湿度计 hygrometer声级计 sound lever meter黏度计 viscosimeter转矩测量仪表 torque measuring instrument转速测量仪表 tachometer露点仪 dew-point meter变送器 transmitter减压阀 pressure reducing valve测功器 dynamometer紫外和可见光分光光度计 ultraviolet-visible spectrometer 顺序控制器 sequence controller微处理器 microprocessor温度调节仪表 temperature controller煤气表 gas meter节流阀 throttle valve电子自动平衡仪表 electronic self-balance instrument电子秤 electronic weigher电子微探针 electron microprobe电子显微镜 electron microscope弹簧管 bourdon tube数字式显示仪表 digital display instrument。

多功能转速表的设计-文献综述

文献综述测量转动体的速度常用的是转速计量仪表，机械式转速表在测量速率时必须要将轴接触被测转动体，以获得同步转速，通过内部齿轮变速后用指针表头示数。

因此使用机械式转速表势必干扰被测物体的运动，还会对接触转动体施加压力，影响测量的准确度。

而这里介绍的是一种非接触式的数字转速表，这种红外光电反射式转速表无需接触转动体，由专用的探头装置发射红外线，同时接受从被测物体反射回来的的红外线，通过光电转换变为电流信号，因此它不影响物体的运动，还可以测量深缩在机壳内部的某个局部物体的转速，经过仪表内部结构线路处理，并能保证相当高的测量准确度。

由于发射和接受的都是红外线，所以不受可见光的干扰，保证了测量的准确可靠。

在《单片机应用系统设计与训练》了解到干扰是造成单片机应用系统故障的主要因素之一，所以在设计中考虑到尽量减少干扰的来源，并且进行软、硬件设计，保障系统能正常运行。

在《单片机原理及应用实验教程》认识到对转速表的转速计算及误差分析里涉及到利用频率测速法和周期测速法，利用门控方式和中断方式对高低转速进行计数。

我也是采用次方法对设计中输出的脉冲进行计数的，从而实现光电传输产生的脉冲与AT89C51单片机的接轨。

在《单片机控制工程实践技术》中有关键盘设计的问题做了详细的说明。

在《单片机原理与应用》认识到：当一个单片机应用系统完成软硬件设计后，通常不可能一次成功，不可避免地要出现一些错误，这就需要系统调试。

另一方面如果单片机已正常工作过，在以后运行过程中出现了某些故障而导致系统失灵，查找并排除故障，使系统重新进入正常工作，这就要靠系统维护及维修来解决。

因此我利用此书中的“单片机应用系统的调试和维护”方法进行设计。

在四位显示部分我们采用《AT89C51系列单片机原理与接口技术》中的串行LED显示驱动器MC14499 ，它是MOTOROLA公司生产的具有SPI串行接口的BCD码输入—十进制码输出COMS LED 译码驱动器。

仪器仪表中英文对照

仪器仪表中英文对照仪器仪表 instrument1.电动单元组合仪表 instrument of electromotion2.电工仪器仪表 electrician instrument（1）电流测量仪表 Current Measurement Instrumentation （2）电阻测量仪表 Measurement Instrumentation（3）电流互感器Current Transformer（4）电阻箱resistance box（5）电能仪表Power Meter（6）功率测量仪表Power Measurement Instrumentation （7）电桥Bridge（8）频率测量仪表Frequency Measurement Instrumentation （9）电位差计potential margin（10）其他电工仪器仪表 other electrical equipment NG （11）电压测量仪表 Voltage Meter（12）钳型表pincers（13）电压互感器 voltage transformer（14）万用表 Multimeter3.电子测量仪器 electron test（1）LCR测量仪LCR meter（2）场强仪Signal Level Meter（3）频谱分析仪Spectrum Analyzer（4）其他未分类Other Unallocated（5）示波器oscilloscope（6）信号发生器Signal Generator4.分析仪器 analyzer（1）PH计PH meter（2）采样器Sample（3）滴定仪Titrator（4）电导仪器conductivity equipment（5）定硫仪sulfur meter（6）粒度仪particle size analyzer（7）量热仪calorimeter（8）浓度计T otal concentration（9）其他分析仪器Other instruments（10）气体分析仪Gas Analyzer（11）色谱仪chromatography（12）声级计sound level Total（13）水分计Moisture Meter（14）水质分析仪Water Analyzer（15）粘度计viscosity（16）浊度计 Turbidimeter5.工业计时器 calculagraph of industry6.光学仪器 optical instruments（1）放大镜magnifier（2）分光仪spectrometer（3）光电子、激光器件photonics, laser devices （4）光谱仪、光度计spectrometer, photometer （5）经纬仪、水准仪theodolite, Level（6）棱镜、透镜prism. Lens（7）其他光学仪器other optical equipment （8）色差计colorimeter（9）望远镜telescope（10）显微镜microscopy（11）夜视仪Night Vision（12）折射仪refractometer。

外文翻译+外文文献+英文文献+数字式转速测量仪

外文翻译外文文献英文文献数字式转速测量仪外文翻译Digital Meter for Measuring Rotational SpeedAbstract A digital meter for measuring the rotational speed is introduced in this paper. It is controlled by an MCS-51 series single-chip microcomputer 8032. It contains the following features: rational design, high accuracy, wide measurability range and powerful functionand dependability. Moreover, it is very nimble and convenient to use. The work principle is presented in detail in the paper and the block diagram and program flowchart are given as well.Key works: digital measuring apparatus; rotation speed; single-chip micro-computerThe rotor speed control system of industry is one of the important parameters. Mechanical tachometer measuring speed, the rotor contactwith the measured object must be to get the synchronous speed, through the internal gear shift instruction after the pointer speed with thesize of the header. Use of mechanical tachometer measured object can interfere with movement, especially when measured rotor mass is very small, speed tables on the rotor pressure is not a small additional load, which affects the measurement accuracy. This paper describes a 8032single-chip microcomputer as the core to the non-contact Digital Tachometer.1 speed measuring principleThe gun speed-sensitive devices with infrared sensors, launched bythe specialized infrared detection devices, while receiving reflected back from the measured object infrared, photoelectric conversion into electrical pulses through the signal, does not affect the rotation ofthe object. Tubes and pipes are fixed in the detection of acceptable shelf, through the lens focus, semi-transparent film not only to the reflected infrared light fired rotating objects, they can rotate the object by the reflected infrared light through the translucent membrane back fired for management. Along the circumference of a rotating body even paste some reflection paper, it directed reflection infrared to receive the reflected acceptance of the infrared control.Photovoltaic conversion shown in Figure In the optical triode 3DU5C adding an appropriate bias, when 3DU5C by infrared irradiation, at the conduction state, A pointfor the low level, 3DG6 end, B point is high; when no infrared radiation, the photoelectric transistor closed A high point presentation, so 3DG6 low collector point B, B point of the pulse signal through the inverter 1,2 plastic, and then the door 3 RP, frequency and speed willbe proportional to the size of the corresponding changes The speed pulse signal. Speed pulse signal into the 8032 microcontroller timer / counter, through the microcontroller to calculate speed software processing.Figure 1 Schematic photoelectric conversionWhen the machine used in the measurement speed M / T method and timing method were used. M/T M / T method is the detection time Tc, the time according to speed pulse m1 and m2 to calculate the speed pulse. If a fixed period Tc, the total time taken and pulse rotation pulse fp fc's Pulse on m1 and m2, timing pulse frequency f, rotor output pulses per revolution for the p, the speed n = 60fm1 / pm2 (r / min). Such as the speed measured over 1 s pulses for the m1, rotor output pulse number per revolution, that great number of p, the speed n = 60m1 / p (r / min). 2 hardware speed measurement instrumentFigure 2 constitute the grounds of speed 8032 MCU measuring circuit. 8032 is MCS-51 series single chip, compared with the common 8031 chip, a feature more than 8032 strong T2 timer / counters and 128 bytes of internal RAM, which T2 counter with 16-bit auto-reload and capture, can for timer / counter with, but also used as a baud rate generator. The system used for time T2, which take into account regular pulse, regular pulse signal directly from the 8032 chip address latch signal ALE clientleads, and through the 74LS74 dual D flip-flop frequency, was two points. Whenusing 6 MHz crystal oscillator, the time pulse frequency fc is 0.5 MHz. T0 accrual speed pulse counter fp, T1 time pulse counter for taking into account fc, trigger DFF1, DFF2 and 1,2,3,4 component count and gate control circuit, can also start and stop counters T0 and T1. P0 port to allow control through the end of 8D with latch 74LS377 extends an 8-bit output, as a five segment LED digital display of the data line selection code. P3.0, P3.1 access switches S1 and S4, S1 for the very few P set selector switch, S4 input pulse for the very few keys. P3.2 and P3.3 are connected S2 and S3 switch, S2 switch method for the speed selection key; select the use of M / T method speed, or velocity measurement with time. S3 for the speed frequency select switch, to select the measuring speed or frequency measurements. When using regular method to measure the speed, the system can be easily measured by measuring the frequency.3 software design and anti-interference measuresSystem programming includes the main program, interrupt procedures, code conversion routines, display routines, etc. The hardware structure of two measurement methods are identical, but different software process, to set the speed through the P3.2 port approach. The following two measurement methods were discussed works.M / T method, first of all by the end of 8032 the P1.1 output start pulse signal, the start pulse cleared DFF1 and DFF2 two triggers, sothat Q1 ended output low, blocking the door 2,3,4, Q- 1 side open thedoor for the high one, and trigger DFF2 the Q-2-ended output is high, ready for the start of work. When the speed pulse signal fp receives the rising edge, the flip-flop DFF1 turn, Q-1 is low, blocking the door 1, Q1 is high, open the door 2,3,4, so that start time T2, m1, m2 and started counting. In the interrupt program, the P1.2 8032 ended output pulse signal to stop, set bit trigger DFF2, Q-2 low-side outputs, blocking the door 2,3,4, T0, T1 and stop counting. Interrupt the program while reading speed signal pulses and timing signal pulses m1 m2, in the main program, in accordance with m1, m2, P and f calculated speed n =60fm1/pm2, and converted to BCD code sent to the digital look-up table display, complete a data collection and display.In the regular method, due to the timing signal generated 1 s, while the maximumtime the system 131 ms, it is the law in time to take 10 consecutive 100 ms time method, when the time to 100 ms, the timer T2 overflow interrupt to the 8032 application. Interrupt in the interrupt process of the cumulative number of times, if the cumulative number of times until they break 10, not to make any operation on the return, T2 to the next 100ms the time, T0 to count speed pulse, when the interrupt when the number reached 10 in interrupt the program, set bit P1.2, stop counting, and reading the count value T0 m1, corresponding in the main program to calculate the speed of operation, and converted to BCD code, send LED display. Time here with 16-bit counter with auto-loading feature of the T2 counter, when T2 overflow interrupt the same time, the counter countsautomatically reload the initial value, continue to regularly. So it's time is continuous, without interruption and response procedures for dealing with the impact of disruption. If not overloaded by features such as timers T0 or T1, then when the timer overflow, it should be in response to failure, reset the timer interrupt program, the initial value. Timer timing is intermittent, the impact of timing accuracy, thereby affecting measurement precision. Visible by 8032 in the T2 counter timer is a feature of the system, it can significantly improve measurement precision. The guns range in 0-49r/min accuracy up to ? 0.1 r / min, at 50-99 999r/min range of accuracy up to ? 1 r / min.The gun can measure the number of different pole pulse generator pulse occurs, such as infrared detectors above, when changing the rotating body attached to the amount of reflection paper, issued by the rotor per revolution pulse number p is also changed accordingly, At this point, if still in accordance with the procedures in the original p value calculation, calculation error will be. Therefore, the system provides very few of the features set the scene: P3.0 I take very few set selector switch, when P3.0 is high time that need to set the pole, then the system waiting for input into the mouth by the P3.1 pulse signal, each pulse makes the system very few register value plus 1, and displayed in the LED digital tube.Velocity measurement at the time, and when not to n = 60m1 / p the operators directly to the speed of 1 s pulses m1 transformed into BCDcode shows that the value obtained is obviously the input pulse frequency. Therefore, the system set up speedfrequency options. P3.3 port access speed frequency select switch S3, when P3.3 is high time that test frequency.Meanwhile, the system software has set a number of logical fault diagnosis functions, such as speeds above 99 999 r / min, the systemwill display PPPPP, that go beyond the scope of this gun is measured,and as if the M / T velocity measurement, the Select the measurement frequency, it shows EEEEE, prompts the user error and so on.As the gun is generally in the industrial field in the working environment of sources of interference, so in the design, using anti-jamming measures, such as power supply filtering, decoupling, pay attention to the trend of ground, then the locations and other hardware interference approach to CPU, RAM self-test, software redundancy, software, software such as anti-jamming technology trap.Figure 2 Circuit Digital Speed Meter中文翻译数字式转速测量仪摘要介绍了一种以MCS-51系列单片机8032为控制主体的数字式转速测量仪。

转速表的用途

转速表的用途转速表是一种测量和显示旋转物体转速的仪器。

它在各种领域中都有广泛的应用，包括机械工程、汽车工业、航空航天等。

转速表的主要功能是通过旋转物体上的传感器来测量转速，并将结果以数字或指针形式显示出来。

转速表的用途之一是在机械工程中。

在机械设备的运行过程中，转速是一个重要的参数。

通过转速表可以准确地测量设备的运行速度，以确保设备正常运行。

例如，在发电机组中，转速表可以帮助工程师了解发电机的转速，以确保其在额定转速范围内运行，避免过高或过低的运行速度对设备造成损坏。

此外，在工厂的生产线上，转速表也可以用于监测设备的转速，以确保生产过程的稳定性和效率。

转速表在汽车工业中也有重要的应用。

汽车引擎的转速是衡量发动机运行状态的重要参数之一。

转速过高或过低都可能导致引擎故障。

转速表可以直接连接到汽车引擎上，通过测量引擎的转速，驾驶员可以及时了解到引擎的运行状态，并根据需要进行调整。

此外，转速表还可以用于比赛车辆中，以帮助车手掌握车辆的运行状态和性能。

航空航天领域也是转速表的应用之一。

在飞机的发动机和旋翼系统中，转速是关键的参数。

过高或过低的转速都可能对飞机的飞行安全造成影响。

转速表可以帮助飞行员及时了解飞机发动机和旋翼的转速，以确保飞机在安全范围内运行。

此外，在航天器的发射过程中，转速表也可以用于监测发动机的转速，以确保发射过程的稳定性和安全性。

除了以上应用领域外，转速表还可以在实验室和科研领域中使用。

例如，在材料研究中，转速表可以用于测量材料的旋转速度，以研究材料的性质和行为。

在科学实验中，转速表可以用于测量旋转装置的转速，以探索物理规律和现象。

转速表作为一种测量和显示旋转物体转速的仪器，在机械工程、汽车工业、航空航天以及实验室和科研领域中都有广泛的应用。

它可以帮助工程师和操作人员及时了解旋转物体的转速，并根据需要进行调整和控制，以确保设备和系统的正常运行。

基于单片机的多功能转速表的方案设计书

摘要关于转速表的设计已经有很多可供参考,但大部分都是由机械式或模拟数字电路来实现的。

存在着体积大、精度低、不直观、功耗大、功能少，而且采样时间长，难以测得瞬时转速。

由于单片机具有体积 ... 摘要 关于转速表的设计已经有很多可供参考,但大部分都是由机械式或模拟数字电路来实现的。

存在着体积大、精度低、不直观、功耗大、功能少，而且采样时间长，难以测得瞬时转速。

由于具有体积小、控制功能强等特点,故它在控制方面得到了广泛的应用。

我们所要设计的多功能转速控制系统就是以为核心来实现智能化仪表。

它具有功能多,功耗小、直观准确,可显示时间、限速报警系统、打印、瞬间转速等优点。

文中阐述了该类转速表的光电传感器工作原理、结构及转速转换电路的设计。

本设计采用的译码器是MC，它是MOTOROLA公司的高集成度LED显示驱动器，采用动态扫描方式显示驱动4个LED数码管。

它集锁存、译码、驱动、扫描、时钟于一体。

关键词：转速表，单片机，驱动器MC Abstract On the rotational speed table design has many available, but mostly by mechanical or simulated digital circuits to achieve. There are large in size, precision low, not visual, electronics large, less functional and sampling time, it is difficult to detect instantaneous rotational speed. As the Micro Controller Unit with both small and control functions such strong characteristics, so it widely in control applications. We want multifunctional rotational speed control system is designed to the Micro Controller Unit as the core to achieve intelligent meters. It is more functional, small electronics, and visual accuracy, showing time, speed warning systems, printing, such as instant rotational speed advantage. The article explained the photoelectric sensors such rotational speed table operating principles, structure and rotational speed switching circuit design. The design is a decoder MC, which is integrated high degree LED Motorola companies that drive, a dynamic scanning driven four LED digital display control. It sets Suocun, decoding, driving, scanning, the clock on integration.&nbsp。

JJG 105-2019《转速表》检定规程探讨

ＪＪＧ１０５－２０１９《转速表》检定规程探讨尧礼辉　俞　鑫　张玉林（中国人民解放军９２６０１部队，广东湛江５２４００９）摘　要：ＪＪＧ１０５－２０１９《转速表》检定规程对转速表的检定提供了科学、规范的依据。

由于规程刚实施，主要内容做了较大的修改，检定员对规程的消化理解有个过程，在贯彻过程中经常会遇到一些疑惑。

本文结合工作经验，从转速表检定的角度对规程的新旧版本进行比较，对新增内容进行了重点探讨，并对修改内容的适用效果进行了分析，以供检定员参考。

关键词：ＪＪＧ１０５－２０１９；转速表；计量性能中图分类号：ＴＢ９７１文献标识码：Ａ国家标准学科分类代码：４６０４０３０ＤＯＩ：１０．１５９８８／ｊ．ｃｎｋｉ．１００４－６９４１．２０２０．１２．０３２ＤｉｓｃｕｓｓｉｏｎｏｆＪＪＧ１０５－２０１９＂Ｔａｃｈｏｍｅｔｅｒｓ＂ＶｅｒｉｆｉｃａｔｉｏｎＲｅｇｕｌａｔｉｏｎＹＡＯＬｉｈｕｉ　ＹＵＸｉｎ　ＺＨＡＮＧＹｕｌｉｎｇＡｂｓｔｒａｃｔ：ＴｈｅｖｅｒｉｆｉｃａｔｉｏｎｒｅｇｕｌａｔｉｏｎｏｆＪＪＧ１０５－２０１９＂Ｔａｃｈｏｍｅｔｅｒ＂ｐｒｏｖｉｄｅｓｓｃｉｅｎｔｉｆｉｃａｎｄｓｔａｎｄａｒｄｂａｓｉｓｆｏｒｔｈｅｖｅｒｉｆｉｃａｔｉｏｎｏｆｔａｃｈｏｍｅｔｅｒｓＢｅｃａｕｓｅｔｈｅｒｅｇｕｌａｔｉｏｎｈａｓｊｕｓｔｂｅｅｎｉｍｐｌｅｍｅｎｔｅｄ，ｔｈｅｍａｉｎｃｏｎｔｅｎｔｓｈａｖｅｂｅｅｎｍｏｄｉｆｉｅｄｇｒｅａｔｌｙ，ａｎｄｔｈｅｏｐｅｒａｔｏｒｈａｓａｐｒｏｃｅｓｓｔｏｄｉｇｅｓｔａｎｄｕｎｄｅｒｓｔａｎｄｔｈｅｐｒｏｃｅｄｕｒｅＢａｓｅｄｏｎｔｈｅｗｏｒｋｉｎｇｅｘｐｅｒｉｅｎｃｅ，ｔｈｉｓｐａｐｅｒｃｏｍｐａｒｅｓｔｈｅｎｅｗａｎｄｏｌｄｖｅｒｓｉｏｎｓｏｆｔｈｅｒｅｇｕｌａｔｉｏｎｆｒｏｍｔｈｅａｎｇｌｅｏｆｔｈｅｔａｃｈｏｍｅｔｅｒｖｅｒｉｆｉｃａｔｉｏｎ，ｍａｉｎｌｙｄｉｓｃｕｓｓｔｈｅｎｅｗｌｙａｄｄｅｄｃｏｎｔｅｎｔｓ，ａｎｄａｎａｌｙｚｅｓｔｈｅａｐｐｌｉｃａｂｌｅｅｆｆｅｃｔｏｆｔｈｅｒｅｖｉｓｅｄｃｏｎｔｅｎｔｓｆｏｒｔｈｅｒｅｆｅｒｅｎｃｅｏｆｔｈｅｏｐｅｒａｔｏｒＫｅｙｗｏｒｄｓ：ＪＪＧ１０５－２０１９；ｔａｃｈｏｍｅｔｅｒｓ；ｒｅｇｕｌａｔｉｏｎ；ｄｉｓｃｕｓｓｉｏｎ０　引言转速表用于测量各种旋转物体的旋转速度。

摩托车中英文介绍22

6. Main beamWhen the main beam is on, this is indicated by the blue indicator light -.7. ButtonThis is used to select the different functions of the multi-function computer.LCD DISPLAY:1. Speedometer2. Rev counter3. Multifunction computer4. Computer functions5. Low battery charge level indicator6. Coolant temperature indicatorATTENTION: Do not leave the ignition switch in position # because the fan stops regardless of the temperature of the coolant, and in this case the temperature will rise.If this indicator light comes on, stop the engine and turn the key to ! and wait until the coolant fan stops turning.Then turn the ignition key to ! and check the coolant level.START-UPWhen the system is turned on (key from OFF to ON) the system checks the functioning of the LCD display by lighting up all the segments and the indicator lights for approximately two seconds.The kilometres remaining until the next service are then displayed on the LCD screen.P43（页眉：组合仪表）6.远光灯切换到远光灯时，蓝色指示灯亮起。

多功能转速表的设计-任务书

毕业设计(论文)任务书学生姓名指导教师_ _职称_ _系别信电系专业电气技术年级班级班课题名称___ 多功能转速表的设计 ________________________________________________任务与要求一、设计基本参数及技术要求：1、转速测量范围： 2～9999r/min；2、能自动变换测量周期：当转速低于3662 r/min时用门控计数法；当转速高于3662 r/min时用中断计数法；3、具有“黑匣子”功能：能保存重要的转速数据，供分析事故时用。

要求工作时每隔30秒保存一次转速值，最大能保存10天的转速数据；4、具有声光报警功能：可任意设定报警上、下限的值，当转速超过该值时就会自动发出声光报警信号；5、有自动打印功能，可根据需要打印出所需的转速值（选做）；二、系统的工作环境：环境温度－10～80℃；相对湿度≤85%；空气中不含有腐蚀性气体；周边没有强磁场干扰。

三、设计任务：1、查阅相关资料，在前3周内完成开题报告及文献综述；2、至少翻译一篇与本设计课题相关的外文资料；3、依据课题要求确定系统硬件框图；4、画出系统电气原理图，包括电源电路；5、依据电气图，查阅相关手册，给出系统中主要元件的参数；6、依据电气图写出系统工作原理；7、依据课题要求确定系统软件流程框图；8、依据系统硬、软写出系统资源分配表及各相关单元的初值；9、据系统软件框图编写系统软件（包括主程序和各种子程序）；10、撰写毕业设计说明书（要注明设计过程中所用的参考文献）四、设计要求：1、系统设计时要进行总体方案比较说明；2、要对系统电气原理图的工作原理进行说明；3、要标明系统设计中所应用的电路或公式的出处；4、要对系统中的主要元器件说明选用依据；5、要在规定的时间内，按毕业设计规定的格式完成设计任务。

五、毕业设计的一般步骤：1、依据课题要求写出开题报告；2、确定系统硬件框图，画出系统电气原理图；3、依据电气图，查阅相关手册，给出系统中主要元件的参数；4、依据电气图写出系统工作原理；5、依据课题要求确定系统软件流程框图；6、依据系统硬、软写出系统资源分配表及各相关单元的初值；7、据系统软件框图编写系统软件（包括主程序和各种子程序）；8、撰写毕业设计说明书（要注明设计过程中所用的参考文献）。

单片机的多功能转速表的设计方案

基于单片机的多功能转速表的设计摘要关于转速表的设计已经有很多可供参考,但大部分都是由机械式或模拟数字电路来实现的。

存在着体积大、精度低、不直观、功耗大、功能少，而且采样时间长，难以测得瞬时转速。

由于单片机具有体积 ... 摘要 关于转速表的设计已经有很多可供参考,但大部分都是由机械式或模拟数字电路来实现的。

存在着体积大、精度低、不直观、功耗大、功能少，而且采样时间长，难以测得瞬时转速。

由于具有体积小、控制功能强等特点,故它在控制方面得到了广泛的应用。

我们所要设计的多功能转速控制系统就是以为核心来实现智能化仪表。

它具有功能多,功耗小、直观准确,可显示时间、限速报警系统、打印、瞬间转速等优点。

文中阐述了该类转速表的光电传感器工作原理、结构及转速转换电路的设计。

本设计采用的译码器是MC，它是MOTOROLA公司的高集成度LED显示驱动器，采用动态扫描方式显示驱动4个LED数码管。

它集锁存、译码、驱动、扫描、时钟于一体。

关键词：转速表，单片机，驱动器MC Abstract On the rotational speed table design has many available, but mostly by mechanical or simulated digital circuits to achieve. There are large in size, precision low, not visual, electronics large, less functional and sampling time, it is difficult to detect instantaneous rotational speed. As the Micro Controller Unit with both small and control functions such strong characteristics, so it widely in control applications. We want multifunctional rotational speed control system is designed to the Micro Controller Unit as the core to achieve intelligent meters. It is more functional, small electronics, and visual accuracy, showing time, speed warning systems, printing, such as instant rotational speed advantage. The article explained the photoelectric sensors such rotational speed table operating principles, structure and rotational speed switching circuit design. The design is a decoder MC, which is integrated high degree LED Motorola companies that drive, a dynamic scanning driven four LED digital display control. It sets Suocun, decoding, driving, scanning, the clock on integration.&nbsp。

转速测量仪机车光电转速传感器中英文对照外文翻译文献

中英文对照外文翻译英文原文:Designing the Testing and Controlling Instrument of the Photoelectric Rotating Speed Sensor Based on AT89C52AbstractAiming at the necessity of performance test of photoelectric rotating speed sensor and the limitation of traditional testing instruments,by using dual-processormodular structure of AT89C52, a new testing instrument is designed and developed, which is a generation of advanced instrument with practical high performance and high reliability. The photoelectric rotating speed sensor is driven and tested by the instrument.The drive and test of the photoelectric rotating speed sensor are implemented. The hardware design of drive and test circu it module in testing and controlling instrument are introduced, and the software design is also presented by drive and test circu it procedures of step motor. The practical running indicates the developed testing and controlling instrument improves working efficiency and testing objective reality, it has definitely practical value.Key words:Pulse Sensor Microprocessor StepmotorB.1 IntroductionTQG15 locomotive the Photoelectric Rotating Speed Sensoris used for detecting the speed of Railway locomotive vehicle wheel, it provides electric pulse signal for locomotive electric control system,and is one of the main parameters of the locomotive safety, reliability,normal work. To ensure the TQG15 locomotive photoelectric rotational speed sensor quality and performance, The test is very important.The traditional detection devices are based on manual operation, only a few limited performance indicators of detection, there is a high precision and productivity low disadvantages. With the continuous development of electronic technology, especially the Single-chip technology in intelligent instrument widely application, development a new generation of high performance and practical the testing and controlling instrument of the photoelectric sensor is imperative.B.2 TQG15 locomotive the Photoelectric Rotating Speed SensorB.2.1 Structure and working principleTQG15 locomotive the Photoelectric Rotating Speed Sensor consists of fulcrum bearing institutions、rotation shaft and universal united shaft driving、optoelectronic conversion circuit.Optoelectronic conversion circuit 's the core is small circuit boards which consists of grating plate and photosensitive transistor,grating plate fixed in the hinge shaft ends,through seven-core cable to connect a small circuit board and the external circuit,Seven-core cable is divided into two groups A and B,each group has three lines,two of the lines to add 15V DC power,other output pulse signals.After TQG15 locomotive the Photoelectric Rotating Speed Sensor connected to 15V power supply, using light-emitting diodes (leds) as the light source, grating plate rotating driven by the wheel shaft, because the blocking effect of grating plate，thus the light source becomes intermittent light, then lead the light interrupters photosensitive transistor switch interchangeably to produce the pulse signals, through the magnifying circuit reshaping, output square-wave pulse that it and speed is proportional, in order to meet the electrical control system of locomotive work needs.B.2.2 Performance index and test contentthe Testing and Controlling Instrument required performance index for: Dc working power: (15±15% )V, power dissipation current less than: 50mA, output pulse amplitude(Whenthe load resistor is 3kΩ)：high-level≥9V，low-level≤2V，phase position：90°±50%，rotational speed range：0~1 000 r/min，the number of pulses per circle:200, the dutyfactor of output pulse: (50±20)%.the Testing and Controlling Instrument required test parameters for: rotational speed、pulse number、The lowest high-level、The highest low-level and the dutyfactor of pulse.B.2 The Testing and Controlling Instrument’s hardware designThe AT89C52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory and 256 bytes of RAM, the development of instrument chosen AT89C52 microcontroller.According to the work principle of photoelectric sensor, the main performance indexes and test content, the Testing and Controlling Instrument’s general principle structure schematic instrument is shown in figure 1Fig·1Hardware structure of measuring and controlling instrument Its working process:through the keyboard of initialization and function after setting,then execute AT89C52 applications,output pulse signal,drive stepp motor and photoelectric sensors rotate,through the signal circuit and A/D converter,then photoelectric sensor output pulse signals into digital signals,into the AT89C52 microcontroller,after data processing,sendto monitor and micro printer output..Stepmotor lifting speed control need two timer interrupt handling;Although photoelectric speed sensor pulse signal test content can be a step-by-step process,but in testing dutyfactor、when two channel's phase difference is equal,all need two timers.but AT89C52 Chip can only provide three timer/counter,the AT89C52 single resources are not qualified for the testing and controlling instrument’s job.Besides,in order to simplify the operation of the testing and controlling instrument and use,the testing and controlling instrument adopts the dual structure of AT89C52 microprocessor, therefore, the testing and controlling instrument of the photoelectric rotating speed sensor divided into drive circuit and signal measuring circuit two functional modules.B.2.1 Driving circuit module designIn order to drive photoelectric sensors rotate and easily adjust its speed,you need to select suitable for the system characteristics and applications of motor,as the photoelectric rotating speed sensor’s powerplant. sepmotor has four characters: ①Step angle and speed size only and proportional to the pulse frequency; ②By changing the size of the pulse frequency range can adjust motor speed; ③To achieve quick start-up, brake, inversion; ④High control accuracy and reliable operation. Stepmotor characteristics of these four aspects,applicable to the system,therefore, in the test apparatus-driven part of the selection of the stepper motor as a power plant.Stepmotor is a type of electric pulse into angular displacement of motor.the power to drive by special offers a series of stepping motor with certain regularity of electrical signals,each input an electrical pulse,it further before stepping motor,its angular and pulse proportional to the number of,motor speed proportional to the pulse frequency,rotating speed and rotating d irection are connected with each phase windings’ way of electricity[1].Use AT89C52 MCU photoelectric speed sensor drive circuit module,output the desired frequency pulse signals.according to the function requirement of drive circuit and the principle of stepping motor,the testing and controlling instrument driver module hardware principle as shown in Figure 2:Fig·2Structure schematic of drivermoduleIn Figure 2 for the stepper motor speed grading control, In AT89C52 microcontroller P1 port pin access control 300, 500, 700 and 900 four speed (r/min) work in the press. Take advantage of some of the P2 port pin drive light-emitting diode, indicates the current step motor speed segment. While, P2.0 tube feet output stepping motor required pulse signal, control stepper motors work. Besides,P1 • 6 and P1 • 7 pin used to implement the drive circuit and test circuit of simple communication,namely stepper motor work needed to speed, take advantage of P1 • 6 control test circuitry for t esting, while the test is completed, with P1.7 control stepper motor can work to the next file.B.2.2 Test circuit module designAccording to the photoelectric sensor output speed electric pulse signal characteristics and the required test parameters, the testing and controlling instrument of measurement circuit module hardware configuration as shown in Figure 3Fig·3Structure schematic of test circuitFigure 3 the measuring circuit consists of four parts: ①Signal conditioning and acquisition circuit, the photoelectric speed sensor 15V square wave signal converting can receive the CMOS AT89C52 level. used to measure photoelectric sensor’s the number of pulses, pulse duty cycle and phase parameters.besides, using high-performance ADC AD574A achieve pulse signal high-low amplitude measurement; ②Switch control circuit, take advantage of the P1 port selection through A, B channel pulse signals; meet A and B channel pulse signal testing work; ③The I/O circuit, one is to use the keyboard input circuit of the relevant information about realizing function keys of initialization and different test content, the second is to use the LCD display the work of the test instrument in time, three is the use of micro-printer to print the test results archive. ④SCM AT89C52, AT89C52 is the core of the test circuit, to achieve coordination of data input, output, operation and processing.B.3 software designThe software design based on the system function, performance, and user requirements, and adopt modularized structure and "top-down" approach to design job.To improve the work efficiency,run-time minimizing manual intervention and action,while,system initializationwork status online adjustable, intuitive display.according to the testing and controlling instrument hardware structure layout and functionality requirements,software design content mainly includes the stepmotor driver and signal testing two basic modules,the following is a description.B.3.1 Stepmotor driver developmentPhotoelectric sensor performance parameters of the test,need a multi-level speed driven by its output signal of electrical impulses along with any exceptions to those conditions test. Stepping motor speed is the use of multistage AT89C52 application system,by changing the frequency of driven pulse to implementation,in addition there is a limit to start stepping motor and the frequency and maximum working frequency,that is, the acceleration and deceleration excessive exist-problem, in devising their control program is to give full consideration[2] As shown in Figure 4 is in accordance with the requirements for the design of driving part of the main module flowchart.Fig·4Flowchart ofmain control program for stepmotorWhen developing a stepper motor driver, you should also deal with three issues: first, on the work of the State flag of motor planning and application; the second is the stepper motor acceleration and deceleration of discrete tranche and the correspondence between the operating frequency;the third is determined by pulse frequency is the SCM timer interrupt output, but the initial timer interrupt response and there is an additional delay of Mount, the program performs processing necessary[2].B.3.2 Software development of testing modulesTest modules of software into the monitoring program and the interrupt service program, where each part consists of a number of functional modules. Monitor mainly includes initialization modules, self-diagnostics and test module, display module and key scanning and processing module; interrupt service program mainly consists of A/D conversion, data read, timer, and clock handling function module.Depending on the test circuit functional requirements, which monitor the overall process as shown in Figure 5. Various monitoring module of key features are: initialize module is used to initialize the extension interface, internal RAM and SFR (special function register) and work status flag; test and diagnostic module, used to check the data input and output channels, DAC and display hardware circuit is functional; display module, used to display the test work parameters and the work of the State; key scanning and processing module, complete key recognition and execution of the function, each key to set the flags. The main function keys and function keys for lot number is used to set the test batch; date key is used to set the test day channel key toggles the A/B test pulse output channel; keys are used to perform the testing capabilities; print key control miniature printer output test reports.Fig·5Flowchart ofmonitoring programDepending on the system needs, pulse more performance indicators of measurement, is in the main test key control for itemized testing, test module to process as shown in Figure 6. To test the implementation requires the combination of appropriate sub modules, the interrupt service program and hardware wiring.Fig·6Operational flowchart of testingmoduleTest method for main parameters: its a number of measurement, pulse, qualified grating spare should open with 200 tanks, according to the stepper motor speed, you can determine a desired time, scheduled count total; Secondly, the pulse of high and low level measurement, belong to the analog test, the use of pulse of rising and falling edge as the interrupt flag, with A/d converter, converts the analog voltage digital; its three, duty cycle measurement, pulse input to the external interrupt interface, with its rising and falling edge control two timer start and stop; fourth, two channel phase difference measurement, in the phase difference function keys under the control of the complete switch about wiring, makes A, B channel pulse signal received two external interrupt port, and then use a timer to determine its latency, combined with pulse signal cycle can determine the phase difference between the two.B.4 conclusionThe development of the Testing and Controlling Instrument of the Photoelectric Rotating Speed Sensor with dual microprocessor architecture, in the system's hardware and software,both in terms of structure, its control operations simple and practical, work performance and high reliability. The actual running shows that the design of the instrument has high utility value.Article From：Xi'an University of Technology中文翻译:基于AT89C52的机车光电转速传感器测控仪设计摘要针对光电转速传感器性能指标测试的必要性和传统测试仪的局限性,引入AT89C52双微处理器模块结构,设计开发出先进而实用的高性能、高可靠性的新一代光电转速传感器测控仪,实现光电转速传感器的驱动和测试工作。

数字转速表的用途

数字转速表的用途数字转速表是一种常见的测量仪表，用于测量旋转物体的转速。

它在工业生产、科学研究以及日常生活中都有广泛的应用。

数字转速表通过测量转速的变化来提供精确的数据，帮助人们更好地掌握和管理旋转物体的运行状态。

数字转速表在工业生产中起着重要的作用。

在机械制造、汽车制造、航空航天等行业，旋转物体的转速是非常重要的参数。

数字转速表能够准确测量机械设备的转速，帮助工程师们监控设备的运行情况，及时发现并解决潜在问题，确保设备的正常运转。

例如，在汽车制造中，数字转速表可以测量发动机的转速，以确保汽车的正常工作。

在机械制造中，数字转速表可以测量机床的转速，以保证加工工艺的准确性和稳定性。

数字转速表在科学研究中也扮演着重要的角色。

在物理学、化学、生物学等科学领域，研究人员经常需要测量实验中旋转物体的转速。

数字转速表的高精度和灵敏度使得科学家们可以准确地测量和记录实验中的转速变化，从而获得准确的实验数据。

例如，在物理实验中，数字转速表可以测量旋转物体的角速度，进而计算出物体的线速度和加速度，为研究人员提供重要的实验依据。

数字转速表在日常生活中也有一定的应用。

例如，在健身房中，人们使用跑步机来进行有氧运动。

数字转速表可以测量跑步机的转速，帮助跑步者掌握自己的运动状态，调整运动强度，从而达到更好的健身效果。

另外，在家庭中，数字转速表还可以应用于家用电器的维修和保养。

例如，当洗衣机出现异常噪音时，使用数字转速表可以测量洗衣机的转速，判断是否存在故障，并及时进行修理或更换零件。

总结起来，数字转速表的用途十分广泛，涉及工业生产、科学研究和日常生活的各个领域。

它以其高精度、灵敏度和稳定性，为人们提供了准确的转速数据，帮助人们更好地掌握和管理旋转物体的运行状态。

随着科技的不断进步和发展，数字转速表的功能和性能还将不断提升，为人们带来更多便利和实用性。

相信在未来，数字转速表将继续发挥重要作用，为各行各业的发展做出更大的贡献。

多功能转速表的设计-开题报告

毕业设计 (论文)开题报告1．本课题所涉及的问题在国内(外)的研究现状综述在计算机硬件和软件技术发展的推动下，使目前国内外这类功能单一、精度低、体积大及价格高的转速表装备得到更新换代。

目前转速表作为一种通用测量工具, 已有多种形式面市, 如: 机械式、机电式、电磁式、光电式等。

尽管它们大都测量精确、使用安全、操作简便、但普遍存在的问题是功能单一，在现今的硬件和软件的精度和功能全面的提高的基础上实现了设备的更新换代，提高了实验技术水平。

采用新技术研制开发的多功能转速表除具有一般转速表的功能外, 还具有另外的特殊功能。

从70 年代起，人类在航空航天、交通运输及兵器工业上所遇到的问题难以用传统的理论来解决。

生产力发展的需要促使在计算机系统技术得以发展。

同时伴随着电子计算机软件和硬件技术的飞速发展，多功能转速表在集成度、功能、性能、体系结构方面都有了飞速发展，已能集成一个完整的功能强大、性能优良的测速系统。

现在欧美等发达国家，测速系统的技术已成功地应用于航空航天、交通运输、兵器工业、机械设计等多种领域，已产生巨大的效益，同时也使传统的设计试验方法发生了巨大变化。

这与现代市场对产品的需求很不适应，如何提高初次设计的成功率是传统设计方法的一个难题。

目前广泛使用的不合微机的数字式转速表，其硬件电路复杂，测量范围与精度不能兼顾，而且采样时间长难以测得瞬时转速，更不能扩展仪表的功能：如任意设置报警值、转速值的永久存贮、按需要进行打印控制等等。

单片微型计算机的出现为自动检测仪表打开了广阔的前景。

特别是MCS-SJ-型单片微机的性能价格比、尺寸、能耗上的优势，以及极强的计算、处理和记忆存贮能力，使出单片机为控制部件的智能仪表成为工业产品更新换代的既经济又先进的技术手段。

具有峰值保持能力。

转速变化时能“记忆最大转速值。

具有“黑匣子功能。

能永久保存重要的转速数据，供事故追忆时分析应用，正常情况下也可提供数据分析。

不需要保存时可以擦除，以备下次存数。

三相多功能电力仪表说明书英文版

Instruction Manual for Three-phase Multi-functionElectric MeterSection 1: IntroductionThis three-phase multi-function electric meter is a high-precision, high-stability instrument designed for measuring and monitoring various electrical parameters in industrial and commercial applications. It features a user-friendly interface, accurate measurements, and advanced functions to ensure reliable operation and convenient data management.Section 2: Features and FunctionsMeasurement Parameters: The meter can measure voltage, current, power, power factor, frequency, and other key electrical parameters in real-time.Multi-functional Display: The LCD display provides clear and concise readings of all measured parameters.Data Logging: The meter has the ability to store historical data, allowing for trend analysis and system diagnostics.Communication Interface: Supports RS485, Modbus, and other communication protocols for seamless integration with monitoring systems.Alarm Function: Built-in alarm system to notify users of abnormal conditions such as overvoltage, overcurrent, etc.Section 3: Operation and InstallationInstallation: Follow the provided installation instructions to ensure proper wiring and placement of the meter.Power-on Setup: Once installed, power on the meter and follow the on-screen prompts to complete the initial setup.Operation: Use the buttons or touchscreen interface to navigate through the meter's menus and functions.Section 4: Troubleshooting and MaintenanceCommon Issues: This section covers common issues and their potential causes, along with recommended solutions.Maintenance: Regular maintenance is recommended to ensure the meter's optimal performance. This includes cleaning the meter's housing and checking for any loose connections.Section 5: Technical SpecificationsThis section provides detailed technical specifications of the meter, including measurement ranges, accuracy ratings, power requirements, and other relevant information.Section 6: Safety PrecautionsElectrical Hazards: Ensure that the meter is properly grounded and that all electrical connections are secure.Environmental Considerations: Avoid exposing the meter to extreme temperatures, humidity, or dust to prevent damage.Section 7: Warranty and SupportInformation on the meter's warranty period, as well as contact details for technical support and service, is provided in this section.Please note that this is a general outline of a three-phase multi-function electric meter's instruction manual. Actual content and layout may vary depending on the specific model and manufacturer of the meter. It is always recommended to refer to the official manual provided by the manufacturer for detailed and accurate information.。

外文翻译译稿和原稿

外文文献翻译译稿数字频率计使用DMA终端计数停止方法Digital frequency meter using DMATerminal Count stop method1.N.Suresh Kumar,Assistant Professor,Dept of IT,GITAM University.2.Dr.D.V.RamaKotiReddy,Associate professor,College of Engineering,AndhraUniversity.3.Mr.B.pramod Kumar,M.Tech.Student,Gitam University,Visakhapatnam.4.Mr.A.Harish,M.Tech,Lecturer,Dept.of IT.摘要本文提出了一种新型宽量程转速测量方法，使用直接内存访问（DMA）终端计数寄存器（TCR）。

DMA的方法是基于在不断采样的过程中在终端计数DMA控制器的停止销的脉冲计数。

提出了单片机实现所需的硬件配置和演算方法。

通过DMA 控制器和定时器来使用单片机的这个方法是适合系统需求的。

同时对该方法的局限性和来源的误差进行了详细讨论。

DMA终端计数寄存器的方法是适用于实时速度控制系统的。

一．导言：可以通过下列方法对速度进行测量1.测量时间，确定脉冲之间的间隔时间[1]2.脉冲计数，计数采样时间内输入的脉冲[2]3.相结合的方法[3]4.持续访问时长法（CET）[4]5.DMA传输方法。

[4][5]当DMA传输方法的硬件配置执行了一个长的处理器指令，在接收到下一个输入脉冲的上升沿之前，DMA应答信号（DACK）可能无法被接收到。

因此，下一个脉冲将不会被检测出来。

为了不丢失任何输入脉冲，就需要对未履行的DMA请求计数器。

这也可以通过一个简单的H/W配置和更低的功耗方法来解决，这个方法可以通过终端计数寄存器和DMA控制器的TC停止销来实现。

DMA控制器的停止销在固定数量的DMA周期后会改变自己的状态。

基于单片机速度里程表外文翻译

基于单片机速度里程表外文翻译里程表和单片机传统的转速表有两个功能：一是用指针指示汽车瞬时车速，二是用机械计数器记录汽车行驶的累计里程。

随着现代汽车向高速化方向发展，传统的软轴驱动的车速里程表面临很大的挑战。

软轴在高速旋转时容易断裂，而且对于不同的车型，转速里程表的安装位置也会受到软轴长度及弯曲度的限制。

因此，基于非接触式转速传感器的电子式转速里程表得以迅速发展。

现代汽车仪表自动化程度很高，老式的机械软轴传动的仪表已经被液晶仪表盘取代。

司机需要增加里程数时，可以使用跑表器来实现。

这种跑表器使用中规模集成电路设计而成，体积小巧，运行稳定，适用于各种电子传感器的汽车上使用。

这种小巧的仪器具有以下优点：1、电路设计精湛，严密。

使用了高性能的集成电路和电子元件，保证电路有高度的品质；使用最优化的电路设计，考虑到尽可能多的不利的使用环境，使仪器能在电压、温度、湿度、灰尘污染等复杂的变化因素多的条件下都能稳定工作。

2、可靠性好。

为了提高电路工作的可靠性，不但元件经过精心筛选，而且经过2400个小时的烤机试验。

它的外壳小巧，可以方便地装在口袋中，随时可以拿出来使用。

3、操作简单，使用方便。

只需要插到点烟器上，不用下车，一切OK。

4、使用安全，放心。

即使接反，也不会损坏仪器，更不会损坏车上任何东西。

5、速度可以调整。

你可以把速度调整到最高，也可以调整到一个固定值，比如300迈。

可以通过调整仪器上速度旋钮改变速度。

单片机AT89C2051以低价、低功耗、可靠性高和易于编程等特点著称。

X是MCS-51系列单片机电路的辅助芯片，主要担当复位、电压检测、看门狗和EEPROM功能。

该芯片的采用提高了系统的可靠性，减少了外围芯片数，可实现里程累计的掉电存储。

LCM1010为十位八段式带背光液晶显示模块，采用三线串行接口，具有功耗低和编程方便的特点。

该显示共分两行显示，第一行6位显示累计里程，第二行4位（1位小数）用于显示小计里程。

红外数字式转速表外文翻译

浙江师范大学本科毕业设计(论文)外文翻译1本科毕业设计（论文）外文翻译家庭的低数CISC的8051 各种组件的功能如下所述。

微型控制器。

由于它的与基于微型控制器使用20引脚的AT89C2051字计算、支付能力和兼容性从Atmel 的一个1282 KB的闪存，这里。

所有的微控制器引脚可利用的项目。

这个微型控制器具有位定时器或者计数器、一个线、两个16输入/输出)-个字节RAM，15条输入输出(、一个全双工串行口、一个高精确度模拟比较器、一片上振荡向量两级中断结构，5 器和时钟电路。

字16x2液晶显示模块。

要显示移动的速度和距离，我们使用一块基于HD44780的的引脚LCD母数字液晶控制器。

LCD的背光功能，使数据即使在夜晚都依然可见。

配置和液晶显示功能。

早前已经被发表在液晶显示器有EFY的几个问题中。

中。

在这里使用距离行驶的读数都保存在一个外部串行EEPROM。

串行EEPROM EEPROM。

的是24C02飞利浦协议的串行）和SDA总线协议。

该总线由两个活动连接线和一条地线。

主动线，串行数据线（）是双向的。

挂接到总线的每个设备都有自己唯一的地址，不管SCL 串行时钟线（。

根据功能，这些芯片都可以作为一个驱动器，内存或ASICLCD 它是一个MCU，芯片可以驱动器只是一个接收器，而记忆体或/或发射机。

显然，LCDI/O接收器和发起数据传同时发射器和接收器。

该总线是一种多主总线。

这意味着，超过一个IC，它被认为是上启动主机总线的数据传输能力可以连接到它。

该协议规范规定的IC 2本科毕业设计（论文）外文翻译本科毕业设计（论文）外文翻译.2图制造建设中的簧片开关和磁铁需要在电机的自行车（英雄本田的辉煌）前轮固定。

通常在使用扬声器的小玩具中是都可以用到的。

，一个小的圆形磁铁（直径约2厘米）磁铁固定在鼓的中部连接到下方的辐条轮鼓。

磁铁固定使用热胶水或环氧树脂。

固管的机械需要，需要使磁铁和干簧管正确对齐，如图.3所示。