基于交通事故数据的弹起式发动机罩功能有效性分析  

Effectiveness Analysis on A Pop-up Engine Hood Function Based on Traffic Accident Data

作　　者：孙海云 周大永 黄巧慧 毕腾飞 吕晓江 Sun Haiyun;Zhou Dayong;Huang Qiaohui;Bi Tengfei;LüXiaojiang(Geely Automobile Research Institute(Ningbo)Co.,Ltd.,Ningbo 315335;State key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082;China Automotive Technology and Research Center(Tianjin)Co.,Ltd.,Tianjin 300300)

机构地区：[1]吉利汽车研究院(宁波)有限公司,宁波315335 [2]湖南大学,汽车车身先进设计制造国家重点实验室,长沙410082 [3]中汽研汽车检验中心(天津)有限公司,天津300300

出　　处：《汽车技术》2022年第10期50-55,共6页Automobile Technology

基　　金：国家重点研发计划项目(2018YFE0192900)。

摘　　要：为对弹起式发动机罩进行准确的有效性分析,避免误点爆现象,基于140起与弹起式发动机罩点爆有关的交通事故数据,对事故类型、事故形态、碰撞对方类型、事故场景、碰撞人员伤情等进行统计分析,结果表明,碰撞对方为弱势道路参与者(VRU)的比例仅为16.43%,而对车辆及其他非行人、两轮车的误触发率较高。对某一常用的弹起式发动机罩的标定矩阵进行评估发现,在35.71%的不点爆工况中弹起式发动机罩点爆,有47.86%的标定物未涵盖在标定矩阵中。最后,提取了弹起式发动机罩误作用的3种典型场景以及目标物类型,为弹起式发动机罩标定矩阵定义及功能有效性评价提供参考。In order to make accurate analysis on the effectiveness of pop-up hood, avoid false trigger, this paper made statistical analysis on accident type, accident pattern, collision object type, accident scene, collision personnel injury,based on 140 traffic accidents related to the pop-up hood deployment. The statistical results show that among 140 pop-up hood deployment accidents, Vulnerable Road User(VRU) accounts for only 16.43%, while the false trigger rate for vehicles,other non-pedestrians and two wheeled vehicles is high. The evaluation of the calibration matrix of a common pop-up hood reveals that 35.71% of the pop-up hood that should not be triggered is triggered;47.86% of the calibrators are not included in the calibration matrix. Finally, 3 typical scenarios and target types of misoperation of the pop-up hood were extracted,which provided a reference for the definition of the pop-up hood calibration matrix and the evaluation of functional effectiveness.

关 键 词：交通事故 弹起式发动机罩 行人保护 误作用场景 功能有效性 

分 类 号：U461.91[机械工程—车辆工程] U495[交通运输工程—载运工具运用工程]