汽车追尾防撞预警系统设计与仿真  

Design and Simulation of Automobile Rear End Collision Warning System

作　　者：羊玢 汪瑷媛 蒋志坚 YANG Bin;WANG Ai-yuan;JIANG Zhi-jian(School of Automotive and Rail Transit,Nanjing Institute of Technology,Jiangsu Nanjing 211167,China)

机构地区：[1]南京工程学院汽车与轨道交通学院,江苏南京211167

出　　处：《机械设计与制造》2024年第11期47-51,共5页Machinery Design & Manufacture

基　　金：江苏省自然科学基金项目(BK20201470);南京工程学院校级科研基金项目资助(YKJ201841);南京工程学院大学生科技创新基金项目(TB20201631)。

摘　　要：追尾碰撞一直是我国道路事故中常易发生、经济赔偿较多的事故类型。结合车辆理论制动曲线简化模型,推导了前、后车速度以及两车距离制动的数学模型,实现了在车辆发生追尾碰撞前提供预警,车内安全带一级预紧来提醒驾驶车后方危险,在预碰撞阶段安全带二级强预紧约束乘客,外置安全气囊点爆,外置的分部式安全气囊全部展开,最大限度地卸去碰撞时的冲击力。结合Carsim与Simulink仿真软件进行模型的仿真实验,分为四个工况进行仿真测试,取得了理想的实验效果。Rear end collision is one of the most common types of road accidents in China.This paper combines a simplified model of the theoretical braking curve of a vehicle to derive a mathematical model of the braking of the front and rear vehicle speeds and the distance between the two vehicles.It aims to provide early warning before the rear end collision occurs.The first level pre-tightening of the safety belt inside the vehicle can remind the driver of the danger behind the vehicle.In the pre-collision stage,the second level strong pre-tightening of the safety belt can restrain the passengers.The external airbag is ignited and all the external divisional airbags are deployed to maximally remove the impact force during collision.Combined with CarSim and Simulink simulation software,the model is divided into four conditions for simulation tests and the ideal experimental results are obtained.

关 键 词：汽车碰撞 数值计算 运动仿真 水箱吸能 气囊系统 

分 类 号：TH16[机械工程—机械制造及自动化] U463[机械工程—车辆工程]