直流电机的转速测试自考设计7457382.docVIP

郑大自考毕业设计（论文） 题目： 直流电机的转速测试 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。 本设计便是运用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，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AT89C51作为控制核心，由旋转传感器TRD-2E360A、字符型LCD1602显示器、光耦合器6N137构成。 本设计重点是测量速度并显示在LCD显示器上。 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。 Abstract In engineering practice, often will encounter all sorts of need to measure speed occasions, measuring speed method is divided into analog and digital two. Analog using speed generator for detecting element, the signal is analog quantity. Digital usually adopts photoelectric encoder, hall element as detecting element, the signal is the pulse signal. With the wide application of micro computer, especially the performance and price is the emergence of the single chip microcomputer, speed measurement generally based on single-chip microcomputer as the core of the digital measurement method. This design is to use AT89C51 single-chip microcomputer control intelligent speed measuring instrument. Motor in the operation process, the need to carry on the monitor, speed is a indispensable a parameter. This system is for the rotor speed measurement, display motor speed, and observe the basic condition of the motor running. This design mainly use AT89C51 as the control core, and the rotation sensor TRD - 2 e360a, character type LCD1602 display, optical coupler 6 n137 composition. This design is focused on measurement speed and displayed on the LCD display. Its advantages are simple hardware circuit, software function is perfect, measuring speed, high accuracy, the control system is reliable, price higher characteristics. 目录 摘要 I Abstract II 目录 III 一、设计要求 1 二、系统设计思想 2 三、硬件电路原理图 3 四、硬件设计 4 （一）、单片机AT89C51介绍 4 （二）、最小系统的设计 7 （三）、光电编码器的原理及选型 11 （四）、光耦合器的原理及选型 13 （五）、字符型1062 LCD简介 15 五、系统软件设计 17 （一）、软件流程图 17 （二）、程序代码 18 总结 24 致谢