侧碰假人颈部标定系统的实验研究-生物医学工程专业毕业论文.docx

侧碰假人颈部标定系统的实验研究
摘 要
侧碰假人主要用于模拟人体在汽车侧面碰撞中的生物力学响应。正确评估和保证碰撞试验假人的生物仿真性是汽车碰撞安全性试验研究的重要课题,而对碰撞试验假人进行正确标定是保证其生物仿真性的关键措施。我国从 2006 年 7 月 1 日起开始实施
《汽车侧面碰撞的乘员保护》(GB 20071-2006) 法规。该法规已将侧碰试验中侧碰假人的头部、胸部、髋部、膝部、小腿等部位的动力学响应指标纳入强检内容,颈部动力学响应指标因技术难度较大而延至今后几年内实施。
本研究根据我校车辆/生物碰撞实验室碰撞假人检测系统技改项目的需要,选定 ES-2 侧碰试验假人作为标定对象,结合本实验室现有的正碰假人标定系统,自主研制一套“侧碰假人颈部标定系统”,取得的研究结果如下:
1. 根据“侧碰假人颈部标定”的国际标准(ISO 15830:2005) ,基于本实验室现有颈部摆臂,开发出专门的设计方法,研制了包括头型物、连接盘、角度传感器标定装置、头颈弯曲角测量系统等关键硬件设备。
2. 采用 MATLAB 程序,研制了一套侧碰假人颈部标定系统信号分析软件,实现了数字滤波、加速度与速度的换算、碰撞零点的确立、角度传感器的标定、数据图形显示等数字处理功能。
3. 遵照“侧碰假人颈部标定”国际标准 ECE R95 所要求的试验参数与试验步骤, 开展了“侧碰假人颈部标定系统”验证实验。实验结果表明:最大头-颈弯曲角、前摆弯曲角、最大后摆弯曲角等关键指标,基本上达到了 ECE R95 的要求。
4. 本课题所建立的“ES-2 侧碰假人颈部标定系统”,简便、实用,具有较好的通用性和稳定性,具有一定的推广应用价值。
关键词:汽车被动安全 碰撞生物力学 假人 标定装置 侧面碰撞 颈部
Experimental studies of neck calibration system of side impact dummy
Abstract
The side impact dummy is mainly used to simulate human body’s biomechanics response during auto side collision. To correctly evaluate and ensure dummy’s biologic simulation is an important subject for auto collision safety test, and that the dummy’s correct calibration is crucial to the assurance of its biologic simulation. The rule of "The Protection of the Passengers in Automobile during Side Collision"(GB 20071-2006) was formally implemented in China on July 1st, 2006. The rule has taken biomechanics response indexes at dummy’s head, breast, coax, knee, crus pulsive testing items, except at neck which is postponed for several years due to the technical difficulties.
According to the requirement of our university’s lab on the technical innovation project of the inspection system of crash dummy, this research takes ES-2 side impact test dummy as calibration object in connection with our lab’s calibration system of obverse impact dummy, we independently develop a set of “neck calibration system of side impact dummy”, and the research has the following achievements:
According to the international criterion of “neck calibration of side impact