摘要
车速、车距测量是汽车避撞系统中的关键技术,分析了车速、车距测量方案,并详细讨论了调频连续波(FM CW)测量系统的工作原理,给出了主要电路的设计方法。此系统可以在雾天或夜间准确监测前方车辆,并在车速、车距达到安全边界时给出警示信号,避免碰撞事故的发生。
Measuring velocity and distance between vehicles is a crucial technology in automotive collision prevention system.It had analysed the system scheme and had studied the principle of the measuring system of FMCW radar.The design method of chief circuits had been given.This system can monitor forward vehicle in a foggy day or at night.Furthermore,it can give the alarm when the velocity and the distance between vehicles reach the edge of security,so some traffic accidents will be avoided.
出处
《仪表技术与传感器》
CSCD
北大核心
2004年第4期11-12,15,共3页
Instrument Technique and Sensor
基金
河北省教育厅自然科学研究项目(2002236)
