基于单片机的汽车防撞系统

AbstractAs the most important transportation tool in the world,cars not onlyneed tools that can be driven,but also pay attention to their safety.There arealready many car driving safety systems.The most important thing of such asystem is to give early warning before an accident occurs.In this way,adistance measuring sensor is needed to measure the distance to obstacles andto remind the driver.Drivers can avoid most traffic accidents if they aresignaled as dangerous in advance.This paper has completed several aspectsof work:study the research and development history of automobileanti-collision system at home and abroad,analyze the needs of the system,and propose the automobile anti-collision system based on STC89C52;construct the overall structure of the system.The principle and characteristicsof the relevant sensors are introduced in the system;the specific detection ofobstacles in front of the car when it is moving forward,the function ofwarning and avoiding obstacles when the distance to the obstacle reaches acertain value,and the functions of displaying speed and mileage arespecifically realized.Key words:Collision Avoidance System Sensor Alarm