基于超声波的预防汽车追尾碰撞报警系统  

Prevents the automobile to follow the collision alarm system based on ultrasound

作　　者：万国峰[1] 

机构地区：[1]西北民族大学电气工程学院,甘肃兰州730030

出　　处：《自动化与仪器仪表》2012年第3期86-88,共3页Automation & Instrumentation

摘　　要：随着车辆的增多,交通事故频发,主要原因是车辆之间的距离小于安全距离。为此,设计了基于超声波技术的预防汽车追尾碰撞报警系统。以AT89S8252单片机为核心,用超声波测距。通过不断检测超声波发射后遇到前方车辆所反射的回波,计算出发射和接收回波的时间差,求出距离。采用语音提示、指示灯蜂鸣器报警,方便使用。可广泛应用于高速公路和拥挤的城市交通中。With the increasing of vehicles, traffic accidents frequently occurred, the main reason is that the distance of vehicles is less than a safe distance. Therefore, designed a preventing the automobile to follow the collision alarm system Based on Ultrasound. Takes AT89S8252 integrated circuit as the core, measures the distance of vehicles by ultrasound. Calculates the time difference between the sent and received back wave by testing the back wave constantly, then knows the distance. It is conveniently as using voice prompting and alanning by pilot fight and buzzer .This system can be used in freeway and city lraffic widely.

关 键 词：安全距离 超声波 测距 碰撞 报警 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程] U46[自动化与计算机技术—控制科学与工程]