Contact network geometric parameter online inspection system

Abstract

The invention discloses a contact network geometric parameter online inspection system. The system includes a mobile platform, a measuring device box, a set of push rod assemblies and a reinforced notebook, wherein the measuring device box includes at least one stereo vision sensor. The system is advantaged in that as stereo vision sensing, multi-source data fusion and precision servo control technologies are comprehensively utilized, automatic intelligent positioning and regional ranging and tracking of multiple contact lines in the contact network are realized, and key geometric parameters of the contact network are resolved online. As manual participation in identification and aiming of the contact lines is not needed, online inspection of the contact network can be realized, working intensity of an operator is greatly reduced, daily inspection efficiency of the contact network is greatly improved, and effective technical means and tools are provided for ensuring normal operation ofelectrified railways.

Description

technical field [0001] The invention relates to an online inspection system for geometric parameters of catenary, belonging to the technical field of industrial inspection. Background technique [0002] The catenary is an important part of the electrified railway power supply system. Its safety is directly related to the normal operation of the railway, and the geometric parameters of the catenary are important technical indicators that directly reflect its safety status; Many related studies have been carried out on the detection methods of catenary geometric parameters. [0003] The existing catenary geometric parameter detection equipment in my country can be roughly divided into three types: portable, hand-push and vehicle-mounted. Wherein, although vehicle-mounted detection (as described in CN105416097A, CN104567684A, CN105674896A, CN105674880A, CN103557788B etc.) has high detection efficiency, it needs to occupy the driving section during its work, so it is not suitab...

AI Technical Summary

Problems solved by technology

Portable catenary detectors (such as CN204421866U, CN300806610S) have the advantages of high detection accuracy and light equipment, but their disadvantages are that they can only perform static single-point detection, low detection efficiency, and high personnel intensity; The equipment can not only avoid the problem of vehicle-mounted detection equipment occupying a long driving range, but also greatly improve the detection efficiency compared with portable detection methods. In theory, it is the best method for daily catenary inspection.

[0004] At present, although my country's hand-push catenary detection equipment reduces the labor intensity of operators and improves the detection efficiency of catenary to a certain extent, it still requires operators to accurately click on the contact line in the catenary image, so automatic online inspection cannot be realized. check

However, the catenary intelligent detector uses single-line laser radar to realize real-time calculation of catenary geometric parameters, which is limited by the ranging accuracy of the current single-line laser radar itself. This equipment has the problems of less effective data and low detection accuracy.

In addition, the lidar-based catenary geometric parameter analysis method (CN103852011A) can only find the minimum conductance value in the valid data as the pantograph-catenary contact point, so it cannot realize the positioning and tracking of multiple contact lines, and cannot meet the needs of line forks and Detection requirements of catenary geometric parameters at anchor section

Other similar studies such as CN204944427U, CN104406521A, CN104330031A, CN204432429U, etc. have the disadvantages of low intelligence, poor detection accuracy, etc., or have problems such as heavy and difficult to carry devices.

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