基于单片机的电机测速系统.docxVIP

基于单片机的电机测速系统 直流电动机转速测量系统设计 摘 要：在工程实践中，经常会遇到各种需要测量转速的场合，例如在发动机、电动机、机床主轴等旋转设备的试验运转和控制中，常需要分时或连续测量、显示其转速及瞬时速度。为了能精确地测量转速，还要保证测量的实时性，要求能测得瞬时转速。本文介绍了一种基于STC89C52单片机的电机测速系统，该系统利用霍尔传感器采集脉冲信号，通过定时计数算法程序，将转速结果实时显示出来。C语言具有开放性和灵活性强的特点，编写起来比较易于上手，不像汇编语言那样局限。所以本次采用的是C语言编程来实现。 关键词；单片机；电机测速系统；霍尔传感器；定时 Direct current motor tachometric survey system design Abstract：In engineering practice often need to measure speed encounter various occasions. For example, At the engines, motors, machine tool spindles and other rotating equipment’s operation and control of the pilot often need frequent time-sharing or continuous measurements show its speed and instantaneous velocity. In order to accurately measure speed, ensure the real-time measurements and require instantaneous speed can be measured. This paper introduces a microcomputer-based STC89C52 motor speed system, the system uses Hall sensor pulse signal collected through the timer counting algorithm programs, will speed the results of real-time display. C programming language has the openness and flexibility, strong features, and it’s difficult to write easy to fly. It is unlike the assembly language as limitations. So, this is the C programming language used to implement Keyword：Single-chip，Motor Speed System，Hall sensor，Timing 目录 I 1. 前言 ........................................................... 1 2．总体方案设计 ................................................... 2 2.1方案论证 ...................................................... 2 2.2方案比较 ...................................................... 2 2.3 方案选择 ...................................................... 3 3.硬件部分设计 .................................................... 4 3.1速度检测电路 .................................................. 4 3.1.1 转速测量原理.............................................. 4 3.1.2开关型霍尔传感器介绍 ....................................... 4 3.1.3 传感检测电路 .............................................. 6 3.2单片机最小系统电路 .......