随着社会的发展进步,汽车开始普及,全民汽车时代即将到来,汽车倒车雷达是汽车上重要的装置。本系统的原理是超声波测距仪的发射探头发出超声波,当超声波遇到障碍物后反射回来,由超声波接收器接收,再由单片机计算出超声波发出与返回的时间,就可以计算出汽车与障碍物的距离,当距离小于报警距离时,单片机控制蜂鸣器与数码管显示发出报警信号。 With the social development and progress, the automobile is beginning to popularize, the universal automobile era is coming, and the car reversing radar is an important device on the car. The principle of the system is that the ultrasonic range finder transmits the ultrasonic wave, when the ultrasonic wave encounters the obstacle, it reflects back and is received by the ultrasonic receiver, and then the single-chip computer calculates the time of sending and returning the ultrasonic wave to calculate the car and the obstacle The distance of the object, when the distance is less than the warning distance, the one-chip computer controls the buzzer and the nixie tube to reveal the warning signal.