The Study and Design of Ultrasonic Distance Measuring Device Fixed in Vehicle

摘要

In this paper, based on the study of ultrasonic distance measuring device, the electronic device fixed in vehicle is presented. This kind of device measures the distance between vehicles and sends out emergency warning message automatically if necessary. This device uses microcomputer controlling timing counter, calculates the time between the sending of ultrasonic to the barrier in front of vehicle and the reflecting from it. Thus the measurement of the distance is acquired.