A method for detection of catenary geometric parameters based on infrared image processing

Abstract

The invention discloses a method for detecting contact net geometrical parameters based on infrared image processing. The method includes the following steps that firstly, an infrared thermal imager is installed on the top of a running locomotive and connected with a mainframe for processing and storing an infrared image; secondly, the infrared thermal imager is used for shooting an infrared image for a pantograph, the infrared image is used for making a pantograph model and relevant parameters of the pantograph model are measured; thirdly, wire height calibration is carried out on the infrared image shot by the infrared thermal imager; fourthly, the infrared thermal imager is used for collecting the positions of the pantograph continuously and transmitting the positions of the pantograph to the mainframe to be processed, the pantograph model matching calculation is carried out on the infrared image, the crossing point position between the current contact line and the pantograph is calculated out, and therefore the stagger value and the wire height are calculated out. The stagger value is the distance between the contact line and the center of the pantograph and the wire height is the vertical distance between the face of the pantograph and the top of the locomotive. By means of the method for detecting the contact net geometrical parameters based on infrared image processing, long-time stable working can be achieved, the anti-interference performance is achieved and in addition, cost can be reduced.

Description

technical field

[0001] The invention relates to the field of parameter detection of a locomotive catenary, in particular to a method for detecting geometric parameters of a catenary based on infrared image processing. Background technique

[0002] The geometric parameters of the catenary are one of the important indicators to evaluate the status of the catenary, and its working status directly affects the driving safety. At present, the following centralized methods are mainly used to calculate the geometric parameters of the catenary:

[0003] 1. Contact type, by installing a sensor on the pantograph to measure the pull-out value of the catenary, and by installing an angular displacement encoder to measure the guide height, this method of contact measurement is generally installed on the inspection vehicle Or on the work vehicle (detection vehicle), because its own weight will affect the dynamic parameters of the pantograph, there are certain hidden dangers to driving safe...

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