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Abrasion detection method and system for contact network

A detection method and catenary technology, applied in measuring devices, instruments, optical devices, etc., can solve the problems of low detection accuracy, and achieve the effect of overcoming the loss of image information and improving the accuracy

Inactive Publication Date: 2018-02-16
CHENGDU NAT RAILWAYS ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With existing methods, due to the interference of light in the environment, the detection accuracy is low

Method used

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  • Abrasion detection method and system for contact network
  • Abrasion detection method and system for contact network
  • Abrasion detection method and system for contact network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A catenary wear detection method, comprising the following steps:

[0030] Place a line array camera 1 and light supplement equipment 2 on the roof of the electric locomotive 4, the scan line of the line array camera is perpendicular to the arrangement direction of the contact line 3, and the irradiation area of ​​the supplement light equipment is the scan line area of ​​the line array camera;

[0031] When the electric locomotive is running, control the on and off of the supplementary light equipment. When the supplementary light equipment is off, the line array camera obtains the contact surface image a of the contact line and the pantograph 5; Bow 5 contacts surface image b;

[0032] Perform differential calculation on image a and image b to obtain the image of the wear area of ​​the contact line;

[0033] The width of the worn part of the contact line 3 is calculated from the image.

[0034] The supplementary light device 2 adopts an LED strobe supplementary light...

Embodiment 2

[0038] Based on the method in Embodiment 1, this embodiment discloses a system for implementing the above method. Such as figure 1 The system shown includes a line array camera 1, supplementary light equipment 2, and a wear calculation device. The line array camera 1 is used to obtain an image perpendicular to the direction in which the contact line is arranged, that is, its scanning line is perpendicular to the contact line; the supplementary light equipment 2 Carry out supplementary light to the image acquisition area of ​​the line array camera, and its supplementary light area is also perpendicular to the contact line; Line array camera 1, supplementary light device 2 obtain image a, image b according to the method of embodiment 1; a. Image b is differentially calculated to obtain an image of the worn area of ​​the contact line, and the width of the worn area of ​​the contact line is calculated based on the image.

[0039] The supplementary light equipment preferably adopt...

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Abstract

The invention discloses an abrasion detection method and a system for a contact network. The method comprises the following steps of placing a linear array camera and a light supplementing device at the top of an electric locomotive, wherein the scanning line of the linear array camera is perpendicular to the arrangement direction of a contact line, and the illumination area of the light supplementing device is a scanning line area of the linear array camera; during the operation of the electric locomotive, obtaining the contact surface images a and b of the contact line with a pantograph whenthe light supplementing device is switched off and on respectively by means of the linear array camera; subjecting the images a and b to differential operation to obtain the image of the abrasion area of the contact line; and calculating the width of the abrasion part of the contact line according to the image. According to the invention, the images of the contact surface of the contact line, with the light supplement and without the light supplement, are respectively obtained by the linear array camera. The obtained two images are subjected to differential operation. In this way, the condition that the image information is lost due to noises generated by the influence of the ambient light on images in a visible light image acquisition system can be overcome. The abrasion detection accuracy of the contact network is improved.

Description

technical field [0001] The invention relates to the field of detection of catenary wear, in particular to a method and system for detection of catenary wear. Background technique [0002] In the current receiving system, the high-speed sliding contact process between the pantograph and the catenary wire will inevitably produce wear. Catenary maintenance is an important part of electrified railway maintenance, and contact wire wear detection is the key and difficult point, which is directly related to the quality of dynamic current flow between catenary wire and pantograph, and the wear of contact wire causes the reduction of wire cross section , the resistance of the wire increases, causing the contact wire to heat up and aggravating the wear of the wire. If the cross section of the wire is too small, it will lead to disconnection and bring huge losses to the railway operation. [0003] At present, the commonly used catenary wear detection system is the optical image detect...

Claims

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Application Information

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IPC IPC(8): G01B11/00G01B11/02
CPCG01B11/00G01B11/022
Inventor 范国海王楠郑慧娟蔡义张春林
Owner CHENGDU NAT RAILWAYS ELECTRICAL EQUIP
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