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Three-dimensional model building of bicycle impact accidents and optimizing reappearance method

A 3D modeling, collision accident technology, applied in 3D modeling, image data processing, instruments, etc.

Inactive Publication Date: 2008-02-06
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art. Aiming at the existing problems in the reproduction of bicycle accidents, the present invention proposes a three-dimensional modeling and optimized reproduction method for bicycle collision accidents

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  • Three-dimensional model building of bicycle impact accidents and optimizing reappearance method
  • Three-dimensional model building of bicycle impact accidents and optimizing reappearance method
  • Three-dimensional model building of bicycle impact accidents and optimizing reappearance method

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Embodiment Construction

[0037] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0038] The present invention sets up the detailed three-dimensional simulation model of the accident bicycle and the cyclist according to the characteristics of the collision accident between the automobile and the bicycle and the information left over from the accident scene, and then selects the car stop centroid position, the bicycle stop centroid position and the cyclist's buttock landing point position as The optimization objective is to take the objective function error value E p As an evaluation index, it reflects whether the calculation results obtained by the...

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Abstract

The present invention provides a three dimensional modeling and optimizing reappearance method of the bicycle collision accident in the traffic field, and the steps include: (1) establishing a three dimensional model of a bicycle and a rider; (2) confirming the touching relationship between the bicycle and the rider; (3) establishing a collision simulating model of the accident condition, the accident car, the bicycle and the rider; (4) confirming the coordinate of centroid position where a car stops, the coordinate of the centroid position where the bicycle stops, the coordinate of the fall point of the buttocks of the rider; (5) confirming an optimizing design variable, a restriction condition and an optimizing object function; (6) conduct optimizing evaluating on the presented objective function by transferring the optimization algorithm; (7) after the repetitious optimization circular calculations, judging the astringency of the objective function and whether the optimum solution is gotten. The present invention improves the calculation exactness, reduces the error and the uncertainty caused by artificial intervention, can conduct reappearance analyzing on the collision accident of the car and the bicycle correctly.

Description

technical field [0001] The invention relates to a collision accident modeling and optimization reproduction method used in the traffic field, in particular to a three-dimensional modeling and optimization reproduction method of a bicycle collision accident. Background technique [0002] my country is the country with the largest number of bicycles in the world. The increase in the number of bicycles on the road and the relative lag in the construction of road traffic infrastructure make motor vehicles and bicycles and other non-motor vehicles mix and congest on the same road, resulting in frequent illegal driving behaviors such as mutual competition for lanes. traffic accident. According to the data released by the Ministry of Public Security in 2004, traffic accidents caused by traffic violations by cyclists in my country in 2003 caused a total of 14,664 deaths and 52,944 injuries, accounting for 14.1% and 10.7% of the total respectively. Traffic accidents caused by bicyc...

Claims

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Application Information

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IPC IPC(8): G06T17/00
Inventor 金先龙郭磊张晓云刘军勇
Owner SHANGHAI JIAO TONG UNIV
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