适用于弯道的侧后方驾驶辅助系统预警策略  

Early-Warning Strategy of Rear-Side Driving Assistance System for Curved Road

作　　者：杜亚坤 高继东[1,2] 宋攀[2] 高博麟[2] DU Ya-kun;GAO Ji-dong;SONG Pan;GAO Bo-lin(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300130,China;Automotive Engineering Research Institute,China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300300,China)

机构地区：[1]河北工业大学机械工程学院,天津300130 [2]中国汽车技术研究中心有限公司汽车工程研究院,天津300300

出　　处：《机械设计与制造》2021年第10期102-105,共4页Machinery Design & Manufacture

基　　金：国家重点研发计划资助(2018YFB0105000)。

摘　　要：针对车辆在行驶过程中易发生侧后方碰撞交通事故的问题,基于现有安全距离模型建立了侧后方分级预警策略,其中针对现有安全距离模型不能适用弯道工况的问题,建立了弯道车距识别算法。基于PreScan与MATLAB\Simulink联合仿真,对建立的分级预警策略与弯道车距识别算法进行仿真验证。结果表明,弯道车距识别算法可适用于弯道工况车辆相对距离的识别,半径125m弯道工况纵向距离误差率不超过1.2%,半径60m弯道工况纵向误差率不超过1.5%;半径125m弯道工况同车道与相邻车道车辆横向距离最大误差为0.56m、0.45m,从而降低弯道工况的虚警率、漏警率。分级预警策略贴合驾驶员的行为习惯,基于弯道车距识别算法在直道工况与弯道工况均下可适时预警,提高了策略的适用性。Aiming at the problem that the vehicle is prone to rear-side collision traffic accidents during driving,agrading early warning strategy is established based on the existing safety distance model.The existing safety distance model cannot be applied to the curved lane and the curve distance identification algorithm is established.Based on the joint simulation of PreScan and MATLAB\Simulink,the established Graded warning strategy and the curve distance identification algorithm are simulated and verified.The results show that the curve distance identification algorithm can be applied to the identification of the relative distance of vehicles in curved conditions.The longitudinal distance error rate is not more than 1.2%in the case of the radius is 125m,and the longitudinal error rate is not more than 1.5%in the case of the radius is 60m.The maximum error of the transverse distance of the 125m radius working condition with the lane and the adjacent lane is 0.56m and 0.45m.Thereby reducing the false alarm rate and the missed alarm rate of the curved conditions.The grading early warning strategy fits the driver's behavior habits.Based on the curve distance identification algorithm,the warning can be timely in both straight and curved conditions,which improves the applicability of the strategy.

关 键 词：侧后方 弯道 车距识别 分级预警 

分 类 号：TH16[机械工程—机械制造及自动化] U461.91[机械工程—车辆工程]