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Dynamic continuous detection method of track centerline coordinates

A technology of track center line and detection method, which is applied in the directions of tracks, track maintenance, roads, etc., can solve problems such as the inability to meet the needs of rapid development of railways, and achieve the effect of improving detection efficiency.

Active Publication Date: 2017-07-28
FLIGHT AUTOMATIC CONTROL RES INST
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

This method belongs to static measurement, and the efficiency is 600-700m / day, which cannot meet the needs of the rapid development of railways

Method used

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  • Dynamic continuous detection method of track centerline coordinates
  • Dynamic continuous detection method of track centerline coordinates
  • Dynamic continuous detection method of track centerline coordinates

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Experimental program
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Embodiment Construction

[0052] The present invention is applied in track alignment monitoring, and should be used on a track inspection vehicle platform equipped with a high-resolution photoelectric mileage meter, an inertial measurement component, and a high-performance camera to form a railway linear mark acquisition device and the like. The specific operation steps are as follows:

[0053] S1: Automatic identification and data collection of railway linear markers

[0054] Step 1.1: Shooting and data collection of linear markers on the left and right sides

[0055] The high-resolution photoelectric odometer sends the cumulative pulse number to the computer at a fixed frequency (such as 200Hz) with the movement of the detection vehicle platform, and the cumulative pulse number of the left odometer is recorded as N od .

[0056] When the inspection vehicle platform passes a linear marker on the left side of the inspection vehicle platform during driving, a pair of collinear high-performance industr...

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Abstract

The invention relates to a track centre line coordinate dynamic continuous detection method, comprising the following steps: a detection van platform moving along a railway track, high-speed cameras installed on the detection van platform and data acquisition systems of the high-speed cameras performing shooting, data acquisition, automatic recognition and calculation on linear markers on the left and right sides of the track; calculating coordinates of intersections of the linear markers on the left and right sides of the track and the track centre line according to the data obtained through the first step; predicting coordinates of points between every two adjacent intersections according to the coordinates of the intersections of the linear markers on the left and right sides of the track and the track centre line obtained through calculation in the second step; a mileage meter converting three-dimensional coordinate data of each point on the track centre line determined in the third step from the time domain to the spatial domain.

Description

technical field [0001] The invention belongs to the railway track detection technology, and relates to a method for dynamic and continuous detection of the three-dimensional coordinates of the center line of the railway track. Background technique [0002] The coordinates of the center line of the track are mainly used to describe the precise three-dimensional coordinates of the line in the track control network and to evaluate the settlement of the line. At present, the content of the domestic track smoothness inspection only includes the relative irregularity of the track, and does not include the track centerline coordinates of the line. [0003] The current method of measuring the coordinates of the centerline of the track is to use a total station to measure with Tianbao trolley. First, it is necessary to build a total station, and install special prisms for measurement on 4 to 6 pairs of linear marker foundation piles around the total station, so that the total station...

Claims

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Application Information

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IPC IPC(8): E01B35/12
Inventor 焦飞雷宝权郎斌张金红李玮奇许大川
Owner FLIGHT AUTOMATIC CONTROL RES INST