一种基于碰撞重现技术的新型头部碰撞损伤试验系统

A Novel Experimental System Used for Head Injury Study Based on Reconstruction Technology of Pedestrian-vehicle Collision

针对人车碰撞损伤研究中高可靠性实验验证方法不易实现的问题,提出一种基于碰撞重现技术的头部碰撞损伤试验系统。该技术利用链传动与导轨滑块机构相连接的传动方式,配合多功能砧板,构建碰撞模拟装置;人体碰撞测试模型与滑动模块配合,形成一种配重可调整的人体模型构建方法;数据采集与分析模块以集成于撞击测试模型内部的力传感模块为基础,可实现碰撞损伤实时分析。基于有限元方法对系统进行结构优化,保证了碰撞试验的可靠性。该系统能够解决高可靠性、低成本实验验证方法问题,可应用于人车碰撞损伤实验研究。

In allusion to the difficulties of carrying out highly reliable injury testing studies for pedestrian-vehicle collisions,this paper proposes an experimental system for measurements of head injuries based on reconstruction technology of collisions.Together with a multi-functional collision board,a chain-drive mechanism and a slide lump mechanism are jointed to construct a device for collision simulation.A crash-test dummy is embedded into the slide lump mechanism,and therefore creates a testing model with adjustable weights.Based on a force-sensing module integrated in the testing model,a data acquisition and analysis module is designed to realize real-time analyses of head injuries.In order to guarantee the precision of the collision experiment,finite element analyses are used to optimize structure of this experimental system.This paper has provided a testing method for head injury studies during pedestrian-vehicle collisions with high-reliability and low-cost.