基于红外线测距的汽车防撞系统的研究

摘要

基于红外线测距的原理,设计了单片机及其相应的电路.该系统的主要作用是自动检测并实时显示汽车与周围障碍物的距离、前车速度和加速度,结合汽车当前速度和本身制动能力算出危险距离,并在达到这一距离时进行声光报警,必要时使用自动刹车装置迫使汽车减速.该系统具有实用性好、精度高、成本低等优点.%Having designed the single chip microcomputer based on the principle of infrared distance measurement. The main use of the system is automatically detecting and real time displaying the distance between the car and the obstacles around. This system also can calculate the hazardous distance based on the car's current speed and the braking ability of the car* When the distance reaches the hazardous value t this system will alarm the driver with sound and light,and when necessary it also can decelerate the car's speed with a kind of automatic brake device. This system has many advantages such as good practicality, high precision, low cost and so on