基于单片机的超声波测距装置设计

Ultrasonic distance measurement device based on SCM

本文论述了基于单片机的超声波测距装置设计方案及实现过程。本装置采用单片机作为控制器的核心进行控制。当系统启动时,超声波发送模块向后发射40k Hz的超声波信号,遇障碍物反射,由超声波接收模块收集,进行放大和比较,同时将此信号送入显示模块,当与障碍物距离小于设定距离时,发出报警声。

This article elaborates design proposal and the development of Ultrasonic distance measurement device based on SCM.This design uses the SCM as controller＇s core to carry on the control.When system automatic start,the ultrasonic wave transmission module launches 40 k Hz the ultrasonic wave signal backward, it meets the obstacle reflection and carries on the enlargement and the comparison by the supersonic reception module collection, the microcomputer sends this signal into the display module,simultaneously triggers the sound alarm circuit,sends out the sound prompt.When it is smaller than with the obstacle distance 0.8m,exudes the different warning sound,reminds the driver to stop.