红外线数字转速表的设计摘 要为测量电机等旋转体的转速，本文用AT89C52单片机作微处理器，设计了一种基于红外线的转速测量装置。系统采用一对红外发射和接收二极管形成光路，通过齿盘轮齿对光路的间歇遮挡形成电脉冲。单片机采用同步MT法对脉冲计时从而计算出转速，并通过液晶显示器显示出结果。实验结果显示测量装置能保证检测的实时性，测量精度高，可适应低转速和高转速的测量。关键词：转速； 红外辐射 ；AT89C52单片机；测量仪 AbstractThis thesis designed an infrared-based speed measuring devices that AT89C52 microcontroller as microprocessors to measure the speed of motors and other rotating body. System uses a pair of infrared transmitter and receiver diodes form a light path through the
