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Real-time measurement method and device for geometric parameters of overhead line system based on single monitoring camera

A technology for geometric parameter, real-time measurement, applied in measurement devices, optical devices, image data processing, etc.

Active Publication Date: 2020-03-24
CHENGDU TANGYUAN ELECTRICAL APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects and deficiencies in the above-mentioned prior art, the application provides a method for real-time measurement of catenary geometric parameters based on a single monitoring camera. The purpose of the invention is to solve the problems in the above-mentioned prior art that the interference images cannot be excluded, the measurement accuracy is low, and the error is large. The method for real-time measurement of catenary geometric parameters based on a single monitoring camera provided by the invention can accurately extract pantograph sliders Contour lines can distinguish conductors, catenary cables and hanging strings, accurately extract contact lines, and improve measurement accuracy

Method used

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  • Real-time measurement method and device for geometric parameters of overhead line system based on single monitoring camera
  • Real-time measurement method and device for geometric parameters of overhead line system based on single monitoring camera
  • Real-time measurement method and device for geometric parameters of overhead line system based on single monitoring camera

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Embodiment 1

[0078] As a preferred embodiment of the present invention, with reference to the attached Figure 1-8 , this embodiment discloses: a method for real-time measurement of catenary geometric parameters based on a single monitoring camera, which can accurately extract the outline of pantograph slides, can well distinguish wires, catenary cables, and suspension strings, and accurately extract contact lines. line, improve measurement accuracy and reduce errors. specific:

[0079] A method for real-time measurement of catenary geometric parameters based on a single monitoring camera, including image input steps, pantograph positioning steps, pantograph slider profile extraction steps, contact line extraction steps, intersection point calculation steps and conduction height, pull-out value calculation step, the step of extracting the outline of the pantograph slider specifically refers to performing linear grayscale enhancement on the pantograph area image retained in the pantograph ...

Embodiment 2

[0113] As another preferred embodiment of the present invention, with reference to the attached Figure 1-8 , this embodiment discloses: a real-time measurement device for catenary geometric parameters based on a single monitoring camera, including an image input module, a pantograph positioning module, a pantograph slider profile extraction module, a contact line extraction module, and an intersection point calculation module module and guide height, pull-out value calculation module; the image input module is used to receive the image transmitted by the single monitoring camera, and transmit the received image to the pantograph positioning module; the pantograph positioning module is used for positioning The image input module receives the pantograph area image in the image, and transmits the reserved pantograph area image to the pantograph slider profile extraction module and the contact line extraction module;

[0114] The pantograph slider contour extraction module is use...

Embodiment 3

[0148] As another preferred embodiment of the present invention, this embodiment discloses a pantograph profile extraction method based on a single monitoring camera, which can accurately extract pantograph slider profile lines and improve measurement accuracy.

[0149] A pantograph contour extraction method based on a single monitoring camera, comprising an image input step, a pantograph positioning step, and a pantograph slider contour extraction step, and the pantograph slider contour extraction step specifically refers to, for the pantograph The pantograph area image retained in the pantograph positioning step is linearly enhanced in grayscale, and the edge of the pantograph area image after linear grayscale enhancement is calculated using the second-order difference method; edge length is calculated, and shorter edges are removed; shorter edges are removed After the edge, connect the end points at both ends of the retained edge into a straight line, judge the angle between...

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Abstract

The invention discloses a real-time measurement method and device for geometric parameters of an overhead line system based on a single monitoring camera, and relates to the technical field of overhead line system measurement. The method comprises an image input step, a pantograph positioning step, a pantograph slider contour extraction step, a contact line extraction step, an intersection point calculation step and a lead height and pull-out value calculation step. The method for measuring the geometric parameters of the overhead line system can be suitable for application scenes under different illumination conditions and different background conditions, the wire, the carrier cable and the dropper can be well distinguished, the requirements for the frame rate and pixels of a camera are reduced, and the geometric parameters of the overhead line system are accurately measured.

Description

technical field [0001] The invention relates to the technical field of catenary measurement, more specifically to a method and device for real-time measurement of catenary geometric parameters based on a single monitoring camera. Background technique [0002] The catenary is a high-voltage transmission line that supplies power to electric locomotives, and is responsible for directly transmitting the electric energy obtained from traction substation to trains for use. The two most critical parameters of the catenary geometric parameters are the conductance and pull-out value of the catenary wire, which are respectively defined as the vertical distance of the wire from the plane on the track and the horizontal distance of the wire from the center line of the track. According to the construction characteristics of my country's railways, the geometric position of the catenary in space is relatively easy to change, especially when a large number of high-speed EMUs are put into op...

Claims

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Application Information

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IPC IPC(8): G06T7/60G06T7/62G06T7/13G06T7/12G06T7/168G06T7/194G06T7/11G06T5/00G01B11/02
CPCG06T7/60G06T7/62G06T7/13G06T7/12G06T7/168G06T7/194G06T7/11G01B11/022G06T2207/20061G06T2207/30232G06T5/90
Inventor 佘朝富宋平周蕾张楠
Owner CHENGDU TANGYUAN ELECTRICAL APPLIANCE
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