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Method for identifying and detecting G-series high-speed train overhead contact line equipment supporting device cantilever connector fastener

A supporting device and detection method technology, applied in the direction of character and pattern recognition, computer parts, instruments, etc., to achieve high recognition accuracy, realize automatic analysis, and reduce the effect of huge workload

Inactive Publication Date: 2018-01-26
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the detection of some single parts has been realized, but the efficiency and accuracy of positioning and detection still have a lot of room for improvement
It is difficult to locate and detect multiple parts at the same time, especially for small-scale parts such as fasteners of wrist-arm connectors.

Method used

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  • Method for identifying and detecting G-series high-speed train overhead contact line equipment supporting device cantilever connector fastener
  • Method for identifying and detecting G-series high-speed train overhead contact line equipment supporting device cantilever connector fastener
  • Method for identifying and detecting G-series high-speed train overhead contact line equipment supporting device cantilever connector fastener

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Embodiment Construction

[0044]The present invention will be described in further detail below in conjunction with the specific embodiments of the accompanying drawings. In this embodiment, four types of wrist-arm connectors in 2000 high-speed rail catenary support device images are first marked as a sample library, and a deep convolutional neural network model based on the Faster R-CNN algorithm is trained. Put the trained classifier into the test set of the sample library for verification. Then for the extracted four types of wrist-arm connectors, mark the six types of fasteners, and train the second Faster R-CNN network model. By cascading two classifiers, the wrist-arm connector fasteners can be localized and detected in the input catenary support device map.

[0045] Specific steps are as follows:

[0046] A. Establish a sample library of four types of important parts, such as upper and lower brace sleeves, rotating ears, and double casing connectors, for the wrist-arm connectors of the high-sp...

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Abstract

The invention discloses a method for identifying and detecting a G-series high-speed train overhead contact line equipment supporting device cantilever connector fastener. The method comprises the steps of firstly acquiring images of a G-series high-speed train overhead contact lien equipment supporting and suspending device; screening the acquired images, constructing a sample database of an overhead contact line equipment cantilever connector; then finishing positioning and extraction of various cantilever connector of the G-series high-speed train overhead contact line equipment by means ofa Faster R-CNN algorithm based on a convolutional neural network structure; further marking various kinds of fasteners on the extracted cantilever connector images, and constructing the sample databases of various kinds of fasteners; and finishing positioning and extraction of various kinds of fasteners of the G-series high-speed train overhead contact line equipment by means of the Faster R-CNNalgorithm based on the convolutional neural network structure. The method provided by the invention has advantages of reducing high workload in artificial identification, realizing automatic analysisfor the field image, performing identification and classification on the fasteners of various kinds of overhead contact line equipment supporting device cantilever connectors, and realizing relativelyhigh identification accuracy.

Description

technical field [0001] The invention relates to the technical field of component detection of a high-speed rail catenary support device, in particular to a method for identifying and detecting fasteners of a wrist-arm connector of a high-speed rail catenary support device. Background technique [0002] The pantograph-catenary system is a key component of the electrified railway system, which undertakes the important work of transmitting the electric energy in the traction network to the electric locomotive. Due to the complex mechanical and electrical interaction between the pantograph and the catenary device, catenary failures account for a large proportion of various equipment failures in electrified railways, seriously affecting the safety of electrified railways. At the same time, catenary faults are widely distributed and difficult to detect. The traditional detection of catenary support and suspension devices relies on manual detection. Although these methods can guar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06K9/32
Inventor 刘志刚陈隽文刘凯吕洋
Owner SOUTHWEST JIAOTONG UNIV
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