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Long straight rail geometric parameter photogrammetry

A technology of geometric parameters and photogrammetry, applied in photogrammetry/video metrology, measuring devices, surveying and navigation, etc., can solve problems such as unsatisfactory accuracy and automation

Inactive Publication Date: 2007-08-22
于起峰 +3
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AI Technical Summary

Problems solved by technology

In this case, the accuracy and automation of the traditional track geometric parameter measurement system based on laser straightening devices cannot meet the requirements of the rapid development of modern railways

Method used

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  • Long straight rail geometric parameter photogrammetry
  • Long straight rail geometric parameter photogrammetry
  • Long straight rail geometric parameter photogrammetry

Examples

Experimental program
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Embodiment Construction

[0066] As shown in Fig. 2, the method of the present invention is that the front of the line detection car 2 on the long straight track 1 is fixedly provided with a cooperation sign 4, and a camera 3 is installed in front of the line detection car 2. When the line detection car 2 moves along the track During the movement, the camera 3 is used to capture images of the cooperation sign 4 moving with the undulation and deflection of the track at different times, and the geometric parameters of the track are obtained through image processing, and the geometric parameters are gauge, superelevation, and longitudinal deflection. , Masaya.

[0067] The cooperation sign 4 is six circular signs 5; when working at night, a cooperation sign made of an LED light source is used; the camera 3 is a digital camera, which is installed on the ground in front of the line detection vehicle 2; In order to obtain a clearer image when the reference marker moves from far to near, a three-variable or t...

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Abstract

A camera measuring method of long-straight track geometric parameter belongs to digital camera measuring and digital image disposing technique of railway contribution. It is: fix cooperate symbol on circuit detecting vehicle head moving on long-straight track, install camera before the vehicle. When vehicle moving along the track, at least two images at different time of the symbol moving as track waving and deflecting are shoot. Achieve geometric parameter (at least one of gage, cant, longitudinal deviation and versed sine) of the track by image processing. The invention efficiently meets high-speed railway requirements of high precision, reliability and automatic degree detecting, greatly improves geometric parameter level of track, which can be applied directly in geometric parameter detecting system of tamping vehicle and be as a core to design multiform track detecting vehicles.

Description

technical field [0001] The invention relates to digital photogrammetry and digital image processing technology of railway engineering, and further refers to a method for detecting geometric parameters of long and straight tracks. Background technique [0002] The measurement of track geometric parameters plays an important guiding role in improving the design of track components, exploring the overall characteristics of the track, determining the rational structure of the track, improving the interaction and influence of the track and rolling stock, and prolonging the service life of track components and rolling stock. [0003] The geometric parameters of the track mainly include the following four items: [0004] (1) Gauge: the distance between the two active sides at 16mm below the inner top surface of the two-strand rail heads; [0005] (2) Superelevation: the height difference between the two rail items of the same track section; the purpose of controlling the superelev...

Claims

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Application Information

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IPC IPC(8): G01C11/00G01B21/00G01B21/16G01B21/20G01B21/22
Inventor 于起峰邱志强梁永辉伏思华
Owner 于起峰
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