文档介绍：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、卷扬机、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和显示其转速及瞬时转速。要测速,首先要解决是采样问题。在使用模技术制作测速表时,常用测速发电机的方法,即将测速发电机的转轴与待测轴相连,测速发电机的电压高低反映了转速的高低。为了能精确地测量转速外,还要保证测量的实时性,要求能测得瞬时转速方法。因此转速的测试具有重要的意义。关键词:电动机单片机传感器目录1概述·····························································3本课题设计的目的和意义··········································3数字式转速测量系统的发展背景····································32单片机········································································································43系统方案提出和论证(传感器的选择)···············································································································94转速测量系统的原理·······················································································