为了帮助汽车驾驶员实现安全倒车的目的,根据超声波测距的工作原理,采用AT89C52单片机系统、温度传感器及超声波传感器为硬件核心,采用单片机C语言编写程序,设计出一套具有实时超声波速度修正及可多方位进行检测扫描的超声波测距系统.实现汽车在倒车过程中一旦接近有障碍物时,立刻自动报警并显示出汽车尾部到障碍物距离的功能.%To help the driver to reverse the car safely, a real-time ultrasonic velocity correction and detection can be multidirectional scanning of ultrasonic ranging system is designed. The system accords to the working principle of ultrasonic distance measurement, uses AT89C52 microcontroller system, temperature sensors and ultrasonic sensors as the hardware core, and uses C language programming. This design has the function that the automatic alarm will show the distance from the end of the car to the barrier, if the car closes to the barriers when reversed.
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