脉冲信号测速电路模块设计

Design of pulse tachometer circuit module

基于51单片机的转速测量系统通过光电编码器对电机脉冲信号进行采集,实现对脉冲信号的产生、整形,完成对单片机处理后信息的输出和显示,可对电机转速进行远程控制。键盘模块调节设置初始转速上限,当转速大于上限则声光报警。由于采用了单片机和光电传感器,该系统具有硬件电路简单、测量精度高、性能稳定可靠等优点,适用于自动控制、自动检测及各种转速测量与控制领域。

The rotational speed measurement system based on 51 SCM is discussed in this paper. The pulse signal of motor is collected by optoelectronic encoder to realize generation and reshaping of the pulse signal,as well as information output and display after processing by SCM. The speed of electrical machine can be controlled remotely. The initial speed upper limit is reset by keyboard module. The sound and light alarm occurs when the speed is higher than the upper limit. The system has simple hardware circuit,high measuring accuracy,stable and reliable performance due to application of the SCM and photoelectric sensor. It is applicable to automatic control,automatic detection,rotary speed measurement and control.