Trapezoidal turnout deformation monitoring system and method of tramcar

A deformation monitoring and tram technology, which is applied in the directions of railway vehicle shape measuring device, measuring device, railway car body parts, etc., can solve the problems of fine and complicated structure, and the monitoring method cannot adapt to all-round monitoring of trapezoidal switches.

Pending Publication Date: 2020-06-16
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The status monitoring of railway rails has been studied in the existing technology, but there is no monitoring system specifically for the deformation of trapezoidal turnouts, and due to the complexity of the structure of trapezoidal turnouts, small deformations will have a great impact, so It is necessary to design a deformation monitoring system specially for trapezoidal turnouts to ensure the safety of vehicle operation
[0004] To monitor the status of railway rails, commonly used monitoring methods include resistance strain gauges, video image processing technology, infrared thermal imaging, vibrating wire testing, eddy current, etc. for stress monitoring, displacement monitoring, and temperature monitoring; figure 1 As shown, the trapezoidal turnout includes the base rail, the switch rail, the curved track and the three-slit center, and the structure is relatively fine and complex.

Method used

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  • Trapezoidal turnout deformation monitoring system and method of tramcar
  • Trapezoidal turnout deformation monitoring system and method of tramcar
  • Trapezoidal turnout deformation monitoring system and method of tramcar

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Embodiment 1

[0054] The image processing module 10 includes a pixel point position extraction module 101, a deformation measurement module 102 and an image mixing and weighting module 103. The video camera 5 shoots a video or continuously shoots more than 10 photos, and the frequency of continuous shooting is greater than 100 times / second. If it is a video, then the image processing module 10 first screenshots the video, and intercepts several photos with a time interval within 0.1 second;

[0055] The pixel point position extraction module 101 is used to find out several pixel points on the photo, and determine the corresponding position of each pixel point on the photo: take the position of the determined point on the mark target as the center point (0,0), and establish the coordinate pixel ( x i ,y i ,z i ), wherein, i=0, 1, 2, 3, 4...n, i corresponds to different pixel points. For several consecutive photos or several photos captured within 0.1 seconds, the above method is used to d...

Embodiment 2

[0060] The image processing module 10 comprises an image screening module 104, an image cutting module 105 and an image overlap comparison module 106, and the high-definition camera 5 continuously takes photos or shoots continuous videos at a frequency greater than 100 times / second, and the image screening module 104 includes image screenshots Components and image screening components, the image screen capture component screenshots the video, the image screening component is used to delete images with large shooting angle deviations or poor clarity in the photos, and the image screening component classifies photos with the same angle into one category and mark the serial number.

[0061] The image cutting and extracting module 105 extracts information from the photos screened by the image screening element, the image cutting and extracting module 105 establishes the same coordinate system for the same type of photos, and extracts the parameters of each pixel point in the coordi...

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Abstract

The invention discloses a trapezoidal turnout deformation monitoring system of a tramcar. The system comprises a deformation data measurement unit, a data acquisition unit and a management analysis early warning unit. The deformation data measurement unit comprises fiber bragg grating sensors (4) and a plurality of camera devices (5);the fiber bragg grating sensors (4) are arranged at the front ends and the roots of a stock rail (3) and a switch rail (3) and at the frog of a point rail (2) and are in deformation coupling with the rails, and the camera devices (5) are arranged at the point rail(1) and the switch rail (1) respectively. The data acquisition unit comprises an optical fiber data transmission module (8), a bandwidth light source (6) and an optical fiber grating regulator (7); and the management analysis early warning unit comprises an image processing module (10) and a data processing module (11). The invention further discloses a trapezoidal turnout deformation monitoringmethod of a tramcar. The trapezoidal turnout deformation monitoring system fills the blank of tramcar trapezoidal turnout deformation monitoring and is comprehensive and accurate in monitoring.

Description

technical field [0001] The invention belongs to the technical field of trapezoidal turnout monitoring, and more particularly relates to a system and method for monitoring deformation of a trapezoidal turnout of a tram. Background technique [0002] Tram has the advantages of low construction cost, low construction difficulty, energy saving and environmental protection, and shared road rights. It has been successfully applied and widely promoted in many cities. The trapezoidal turnout is a turnout that combines straight-strand steel rails and multiple curved-strand steel rails. It can realize the function of changing multiple strands in a limited space, guide vehicles to each strand within a short distance, and has a small footprint. And other advantages, so it is widely used in the tram vehicle base. [0003] The status monitoring of railway rails has been studied in the existing technology, but there is no monitoring system specifically for the deformation of trapezoidal t...

Claims

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Application Information

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IPC IPC(8): G01B11/16B61K9/08
CPCB61K9/08G01B11/165
Inventor 程春阳缪东李文胜史明红舒冬姚应峰葛红肖俊邱海波李威王德威郭钦郭文浩
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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