基于毫米波雷达的高速弯道扇形预警模型

Fan Warning Model for Curved Roads on Highways Based on Millimeter Wave Radar

针对现有高速公路预警方法中虚警、漏警频发的现象,提出了基于毫米波雷达的弯道扇形预警模型,介绍了建立模型的道路虚拟简化方法,确定了模型中与行车有关的实时距离、临界跟车距离、速度、加速度等参数,提出了行车安全裕度为实时跟车距离与临界跟车距离的比值这一概念,建立了基于行车安全裕度的分级预警机制,并设置了灯光预警、声音预警和辅助制动3种预警方式及不同方式启用的临界点。仿真结果显示:扇形分级预警模型能够有效地减少虚警和漏警,扇形分级预警模型是有效的。

A fan warning model for curved roads was proposed based on millimeter wave radar. The method named virtual road simplification of the model was introduced. The related parameters of the model such as the actual following distance,the critical following distance,the velocity,and the acceleration were determined. The concept of driving safety margin,which is the ratio of the actual following distance and the critical following distance was introduced. A graded early warning mechanism was established based on driving safety margin. The simulation results showed that the fan warning model for curved roads could effectively reduce false alarms and leak alarms,and the model was feasible.