1、 毕 业 设 计毕 业 设 计 （2014 届）届） 题题 目目 基于磁电传感器的电机转速自动检测系统设计基于磁电传感器的电机转速自动检测系统设计 学学 生生 二二一三一三年年六六月月 I 基于磁电传感器的电机转速自动检测系统设计基于磁电传感器的电机转速自动检测系统设计 摘摘 要：要：在工程实践中，经常会遇到测量转速的情况。因此，转速的测量具有一定的工 程意义。本文开发了基于单片机的电机转速自动检测系统。选用的磁电传感器将电机的 转速信号转换成电压信号，所设计的放大电路将磁电传感器输出的电压信号放大，经过 整形电路将正弦信号转换为方波，由单片机进行脉冲计数，并且通过 LCD 显示电机的 转速。
2、 文中首先阐述了该设计的总体方案、实验的步骤，并讨论合适的测量方法。其次， 介绍选用的单片机和 LCD 显示等电子元件，并分析电路图各部分的功能。最终，编写 程序调试运行，分析实验结果。 本设计主要用单片机作为控制核心，由磁电传感器、LCD 显示组成。其优点是电路 简单，软件功能完善，具有测量速度快、精度高、控制可靠、性价比高等特点。 关键词：关键词：转速测量；磁电传感器；单片机；LCD 显示 II Design of automatic motor speed detection system based on magnetoelectricity sensor Abstract：In en
3、gineering practice, we often encounter the situation of speed measurement, therefore, speed measurement has a certain engineering significance. This paper has developed motor speed detection system based on single chip microcomputer.The magnetoelectric sensor selected , the speed signal of motor int
4、o voltage signal.The designed amplifier circuit,will amplify the voltage signal of magnetoelectric sensor output, After shaping circuit，sine signal will be converted into square wave, pulse counting by single chip microcomputer,and through the LCD display of the motor speed. This paper first expound
5、s the design of overall scheme, experiment steps, and discuss the appropriate measurement method. Secondly, this paper introduces the selection of single chip microcomputer and LCD displays and other electronic components, and analyzes the functions of the parts of the circuit diagram.In the end,wri
6、te programs debugging and running, analyze the results of experimental. This design mainly used single-chip microcomputer as control core, and consists of magnetoelectric sensor, LCD display.Its advantage is simple circuit, software function is perfect, measuring speed, high precision, reliable control,high cost performance,etc. Key words：Speed measurement； Magnetic sensors;single chip microcomputer; LCD display III 摘要
