Dynamic modeling method of large-scale track lines

A dynamic modeling, large-scale technology, applied in 3D modeling, image data processing, instruments, etc., can solve the problems of low simulation degree, inaccurate three-dimensional orbit model, slow speed, etc.

Inactive Publication Date: 2013-08-07
CENT SOUTH UNIV
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Problems solved by technology

The disadvantage of this type of method is that the 3D track model generated based on lofting and scanning is not precise and the degree of simulation is not high. At the same time, the speed of individual copy modeling of sleepers, ut...

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  • Dynamic modeling method of large-scale track lines
  • Dynamic modeling method of large-scale track lines
  • Dynamic modeling method of large-scale track lines

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Experimental program
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Embodiment Construction

[0026] Below according to the flow chart of the present invention ( figure 1 ) to describe each part in detail.

[0027] 1. Preliminary preparation

[0028] Preparatory work includes determining the category, length, and radius of curvature of the basic unit segment of the track model based on the simulation accuracy and statistical analysis of track data information, and using professional modeling software to model according to these parameters, and the obtained model is saved in a readable model in the file. figure 2 is the top view of the basic unit segment of a type of curve and straight road in its three-dimensional object coordinate system.

[0029] 2. Read track data and track model basic unit segment

[0030] Read the track data given by the user, including the type, length (or starting mileage and ending mileage) and curvature radius (for curves) of each track segment. These data need to be preprocessed before application, and the main operation is to normalize ...

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Abstract

The invention discloses a dynamic modeling method of large-scale track lines. In order to perform dynamically three-dimensional track modeling according to different track line data, primary loading is performed to a track model basic unit section established through professional modeling software in the initialization phase, parameters of positions, directions and the like of all tracks on lines are decomposed and computed, and then real-time splicing and displaying are directly performed to tracks and scenes according to a current viewpoint position in the simulation phase. The method is simple and effective, can be used for performing real-time simulation of large-scale track lines on a common personal computer, and is applied to engineering applications, such as design and planning of large-scale track traffic engineering projects, driver training based on vehicle operating scene simulation and safety analysis.

Description

technical field [0001] The invention relates to a method for dynamic modeling and real-time simulation of a three-dimensional rail model based on actual rail line data in rail traffic simulation, which can be applied to the design and planning of large rail traffic engineering projects, and is based on vehicle operation visual simulation. Engineering applications such as driver training and safety analysis. Background technique [0002] When high-quality rail transit simulation is required, the traditional processing method is to use professional modeling software to perform manual modeling based on line data, but this method is difficult to deal with large-scale actual track line data and requires huge R&D investment. [0003] Some scholars proposed to carry out dynamic modeling based on actual track line data, such as the typical modeling method proposed by Pu Hao et al.: 1) Use the scanning surface generation method to construct, such as railway tracks, highway medians, a...

Claims

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Application Information

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IPC IPC(8): G06T17/00
Inventor 廖胜辉夏佳志刘石坚梁毅雄邹北骥胡旺陈再良王磊向遥
Owner CENT SOUTH UNIV
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