汽车安全距离的检测与实现Detection and implementation of automobile safety distance内容摘要 进入 21 世纪以来我国汽车行业发展迅速，汽车让人们的出行更加方便，但是汽车的增多也引发了一系列安全问题。其中最突出的为追尾事故和倒车停车造成的剐蹭，这小则让汽车损坏花钱修理，大则会有生命危险。而汽车安全距离的检测与实现是基于这一突出问题来给予驾驶员必要的技术硬件设施。这个设计是利用超声波测距，来判断车体与障碍物之间的距离从而辅助驾驶员安全地倒车。汽车安全距离的检测与实现的核心芯片为AT89C52 单片机，这一设计由超声波发射和接收电路，显示报警电路，复位电路组成。软件部分的设计由主程序和几个发射接收，计算，显示子程序组成。该设计用单片机来控制计时，计算超声波在发射端与障碍物的速度来获得距离。该设计结构简单，性能好，误差小，可以满足在日常生活中安全地辅助倒车。关键词：51 单片机 超声波传感器 测距 □Abstract Since the beginning of the 21st century, China's automobile industry has developed rapidly, and automobiles have made people more convenient to travel, but the increase of automobiles has also caused a series of safety problems. Among them, the most prominent ones are rear-end accidents and backlashes caused by back-up parking. This can damage the car and cost money to repair, and most of them can be life threatening. The detection and implementation of vehicle safety distances are based on this outstanding problem to give drivers the necessary technical hardware facilities. This design uses ultrasonic distance measurement to determine the distance between the car body and obstacles to assist the driver in reversing the car safely. The core chip for the detection and realization of the safety distance of the car is the AT89C52 single-chip microcomputer. This design consists of an ultrasonic transmitting and receiving circuit, a display alarm circuit and a reset circuit. The design of the software part consists of...
