基于视频信息的高精度事故重建方法研究*

doi:10.19562/j.chinasae.qcgc.2020.06.011

Abstract

Abstract: In order to improve the accuracy of accident reconstruction, the method of combination of multi-body system and finite element is used in this paper for reconstruction of two VRUs accident cases with clear video information and a high-precision accident reconstruction method is proposed and verified. Firstly, the video information is analyzed and vehicle collision speed is obtained based on the direct linear transformation (DLT) theory; then the VRUs kinematic response is accurately reconstructed by using the PC-Crash and MADYMO coupling method; finally, the intracranial kinematics and kinetic parameters are deeply analyzed based on the human body finite element model THUMS (Ver 4.0.2). The results show that the reconstructed vehicle VRU collision position, the kinematic response, rotation angle, landing posture and landing body of the collision process are completely consistent with the video information. The absolute error between VRU and vehicle final position is less than 7%, and the head injury position and injury severity of VRU are consistent with the injury report

Key words: accident reconstruction method, head injury, video analysis, direct linear transformation

Wu He, Han Yong, Shi Liangliang, Xu Wei. Research on High Precision Accident ReconstructionMethod Based on Video Information[J].Automotive Engineering, 2020, 42(6): 778-783.

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Research on High Precision Accident ReconstructionMethod Based on Video Information

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