汽车工程

汽车工程 ›› 2019, Vol. 41 ›› Issue (8): 915-921.doi: 10.19562/j.chinasae.qcgc.2019.08.009

• • 上一篇    下一篇

儿童安全座椅碰撞检测偏差影响因素仿真与试验研究*

张学荣, 殷文倩   

  1. 江苏大学汽车与交通工程学院,镇江 212013
  • 收稿日期:2018-08-06 出版日期:2019-08-25 发布日期:2019-09-03
  • 通讯作者: 张学荣,副教授,博士,E-mail:zhangxr@ujs.edu.cn
  • 基金资助:
    江苏省出入境检验检疫局科技项目(2015KJ17)

Simulation and Experimental Study on the Influencing Factorsof Collision Test Deviations for Child Safety Seat

Zhang Xuerong, Yin Wenqian   

  1. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013
  • Received:2018-08-06 Online:2019-08-25 Published:2019-09-03

PDF (PC)

391

赞

摘要： 针对汽车三点式安全带固定儿童安全座椅和五点式安全带固定儿童假人的情况,采用仿真计算和试验验证相结合的方式,对安全带初始张力、五点式安全带位置差异、儿童安全座椅整体位置差异和头部位移图像识别方法4个方面对动态碰撞检测结果的影响进行了定量分析。结果表明:儿童安全座椅整体位置的前后偏移影响最为显著,导致胸部合成加速度最大偏差为4.3%,胸部垂直加速度的最大偏差高达37.7%。所提出的修正公式使头部位移图像识别误差大幅降低;所制定的控制方法和措施有效地减小了测试偏差,并保证了测试数据的一致性。

关键词: 儿童安全座椅, 动态检测, 影响因素

Abstract: Aiming at the cases that the child safety seat is fixed with car three-point seat belt and the child dummy is restrained by a five-point seat belt, the effects of the initial tension of seat belt, the initial position of five-point harness, the overall position of child safety seat and the image recognition method of head displacement on the results of dynamic collision test are quantitatively analyzed by the combination of simulation analysis and test verification. The results indicate that the forward and backward shifts of child safety seat have the most significant effects, leading to a maximum deviation of 4.3% in chest resultant acceleration and 37.7% in chest vertical acceleration. The correction formula proposed reduce the image recognition deviation of head displacement by a wide margin, and the control schemes and measures formulated effectively lower the test errors and ensure the consistency of test data

Key words: child safety seat, dynamic test, influencing factors