液体点滴速度自动监控系统设计

液体点滴速度自动监控系统设计

郑州轻院轻工职业学院

专科毕业设计（论文）题目液体点滴速度自动系统设计

液体点滴速度自动监控系统

摘要

本设计为液体点滴速度监控装置，实现了对液体点滴速度的检测与控制和储液瓶中液面高度的检测报警，并且动态显示点滴速度，可以通过按键设置液体点滴速度并使用步进电机进行速度控制；为了达到较好的调整稳定度，通过软件实现控制电路的自适应调节；利用软件屏蔽检测中的异常信号；另外实现了多机通信，即一个主机站控制多个从机站和主、从机之间的数据传输。报警信号通过串行口实现从机到主机的传输，利用发光二极管和蜂鸣器实现主机的声光报警，同时从机使用数码管显示异常信息。

系统以单片机89C51单片机为核心控制器件，有直流电动机为液体点滴速度的控制执行器件，进行液体点滴速度控制。选择合适的传感器，准确检测出模拟信号是实现本设计的关键所在，串行通讯接口建立了主战与从站的有线监控系统，主机采用VB编写的界面，显示了友好的人机互交界面。制成了一套简易实用的液体点滴速度监控系统装置。

关键词PID /单片机/点滴速度/光电传感器/多机通信

AUTOMATIC CONTROL SYSTEM

OF DROPPING RATE

OF LIQUID

ABSTRACT

Designed for the monitoring mechanism, the implementation rate drops of liquid little speed of the inspection and control and a reservoir of the high level test of the police, and dynamically show, via the keys can be set up a little speed and using step into the motor control tempo ；to achieve better adjust the stability and software for the control circuit to regulate ；used software to detect in shielding of the signal ；achieved much in the communications, Is a host got control over from a machine stops and the lord, from the transmission of data between. the alarm signal by

serial port from the implementation of the host of transport, the use of light and a buzzer to host of audible visual type of machine, using digital of information. reflect the abnormal。

In monolithic integrated circuits 89c51 monolithic integrated circuits, the controller has a direct motor for a little speed control, the device speed control. drops of liquid。Choose the appropriate, accurate testing of models at the signal is to realize the design of the key to the serial communication interface established in the war with the land-based control system, the host the VB write the interface. display the friendly man-machine to each other in the interface. made a simple functional liquid little speed control system.

KEY WORDS PID,Monolithic integrated circuits,Little speed,Photo electric sensors,Many of the communications

目录

中文摘要 ...................................................I 英文摘要(任选).....................................................................II 前言.. (1)

1 方案比较、设计与论证............................... (2)

1.1 量模块方案比较与论

证 (2)

1.1.1 高度测量 (2)

1.1.2 液体点滴速度测量 (2)

1.2 控制模块方案比较与论

证 (3)

1.3 主从单片机通信方案设计与论证 (4)

2系统设计组成框图 (5)

2.1系统工作原理 (6)

3系统分立模块设计及工作原理...................... ..... (7)

3.1键盘框图及工作原理................. (7)

3.2数据采集模块及工作原理 (7)

3.3声光报警模块............ .. (8)

3.4电机模块及工作原理...... .. (9)