毕业设计-基于单片机的电机转速测量系统设计

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1、 1 摘 要 在工程实践中， 经常会遇到各种需要测量转速的场合， 测量转速的方 法分为模拟式和数字式两种。 模拟式采用测速发电机为检测元件， 得到的 信号是模拟量。数字式通常采用光电编码器，霍尔元件等为检测元件，得 到的信号是脉冲信号。 随着微型计算机的广泛应用， 特别是高性能价格比 的单片机的出现，转速测量普遍采用以单片机为核心的数字式测量方法。 本文便是运用 AT89C51 单片机控制的智能化转速测量仪。 电机在运行 过程中，需要对其进行监控，转速是一个必不可少的一个参数。本系统就 是对电机转速进行测量，并可以和 PC 机进行通信，显示电机的转速，并 观察电机运行的基本状况。 本设计主要用

2、 AT89C51 作为控制核心，由霍尔传感器、LED 数码显像 管、HIN232CPE 电平转换、及 RS232 构成。详细介绍了单片机的测量转速 系统及 PC 机与单片机之间的串行通讯。充分发挥了单片机的性能。本文 重点是测量速度并显示在 5 位 LED 数码管上。 其优点硬件是电路简单，软件功能完善，测量速度快、精度高、控制 系统可靠，性价比较高等特点。 关键字：MSC-51（单片机） ； 转速； 传感器 2 Abstract In the project practice, we will meet each kind to need frequently to survey the r

3、otational speed the situation, the survey rotational speed method divides into the simulation type and the digital two kinds. The simulation type uses measured that the fast generator is the detecting element, obtains the signal simulates the quantity. Digital usually uses the electro-optical encode

4、r, the Hall part and so on is the detecting element, obtains the signal is the signal impulse. Along with microcomputers widespread application, specially high performance price compared to monolithic integrated circuits appearance, the tachometric survey uses generally take the monolithic integrate

5、d circuit as the core digital measuring technique I graduated from the Design of the issue is control of the intelligent use of SCM speed measuring instrument. The system is the motor speed measurement, and PC and can communicate that the motor speed, and to observe the motor running the basic situa

6、tion. The main design AT89C51 control as the core, by the Hall sensor, LED digital CRT, HIN232CPE-level conversion, and a RS232. Detailed measurements of the speed of the SCM system and PC and the serial communication between the microcontroller. Give full play to the performance of the SCM. This paper is to measure the speed and displayed in five LED digital pipe. The advantage of a simple hardware and software capabilities improve, measuring speed, high precision and control system rel