基于超声波测距的倒车报警系统设计

Design of Reverse Alarm System Based on Ultrasonic Ranging

超声波倒车防撞报警系统又叫倒车雷达。该系统可以帮助司机解决倒车的难题,防止在倒车的过程中发生碰撞,提高驾驶安全性,是一种非常人性化的设计。该系统的重心就是利用超声波进行距离测定,超声波测距系统由主控芯片、超声波发射电路、超声波接收电路和显示模块组成。本文所设计的超声波测距系统的主控芯片为STC89C52单片机,超声波发射电路核心采用的是555定时器,接收电路核心是CX20106A,显示模块为LED,与此同时,在该系统中增加了测温补偿模块以及声光报警模块。本文设计的超声波倒车防撞报警系统,简单可控,成本低。

The reversing radar that people usually call is the ultrasonic reversing anti-collision alarm system studied in this paper.The system can help the driver solve the problem of reversing,prevent collision during the reversing process,and improve driving safety.It is a very user-friendly design.The center of gravity of the system is the use of ultrasonic waves for distance measurement.The ultrasonic ranging system consists of a main control chip,an ultrasonic transmitting circuit,an ultrasonic receiving circuit and a display module.The main control chip of the ultrasonic ranging system designed in this paper is STC89C52 single-chip microcomputer.The core of the ultrasonic transmitting circuit adopts 555 timer.The core of the receiving circuit is CX20106A,and the display module is LED.At the same time,the temperature measurement compensation module and sound and light alarm module are added in the system.The ultrasonic reversing anticollision alarm system designed in this paper is simple and controllable and low in cost.