Car-human collision accident recurring optimizing method based on three-dimensional multi-rigid model

A technology for collision accidents and optimization methods, used in special data processing applications, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2007-01-03
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0006] Aiming at the problems existing in the current accident reproduction, the present invention proposes a car-person collision accident reproduction optimization method based on a three-dimensional multi-rigid body model

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  • Car-human collision accident recurring optimizing method based on three-dimensional multi-rigid model
  • Car-human collision accident recurring optimizing method based on three-dimensional multi-rigid model
  • Car-human collision accident recurring optimizing method based on three-dimensional multi-rigid model

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Embodiment Construction

[0031] According to the characteristics of the collision accident between the car and the pedestrian and the leftover information of the accident scene, the present invention selects the stop centroid position of the car and the position of the pedestrian's buttocks as the optimization targets, and the target function error value E p As an evaluation index, it reflects whether the calculation result obtained by the p-th optimization cycle tends to converge.

[0032] According to the accident scene, a fixed three-dimensional space coordinate system XYZ can be defined, and then the center of mass position coordinate C of the car stopping after the accident can be determined 1 (x c1 , Y c1 ,z c1 ), the coordinates of the position of the pedestrian's buttocks H 1 (x h1 , Y h1 ,z h1 ).

[0033] Taking the collision speed V of the car to the pedestrian, the coordinate of the car’s centroid position at the initial time of the collision C 2 (x c2 , Y c2 ,z c2 ), Pedestrian standing hip po...

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Abstract

An optimizing method for the colliding accident of car-human based on the three-dimensional multi-steel model. The process: (1) make the three-dimensional multi-steel mathematical model of the car, the human and the environment; (2) determine the centroid position coordinate of the car stopping and the coordinate of the human buttocks; (3) determine the optimizing design variable, the limiting condition and the optimizing object function; (4) resolve the giving object function by the optimizing arithmetic; (5) determine the astringency of the function after computing. The invention has decreases the reappearance time, the error and the indeterminacy by man-made interference.

Description

Technical field [0001] The invention relates to a collision accident reconstruction optimization method used in the traffic field, in particular to a car-person collision accident reconstruction optimization method based on a three-dimensional multi-rigid body model. Background technique [0002] With the rapid increase in the number of cars in my country and the relative lag in road traffic infrastructure construction, traffic collisions occur frequently, among which collisions between cars and pedestrians account for a relatively high proportion, accounting for about a quarter of the total. the above. Due to the complexity of actual collision accidents and the diversity of information left on the scene, it is difficult to reproduce and analyze accidents, which is not conducive to providing a fast and accurate basis for the correct identification of accidents by the traffic management department. [0003] The key to accident reproduction is to calculate and determine the collisi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F19/00
Inventor 金先龙郭磊张晓云
Owner SHANGHAI JIAO TONG UNIV
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