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Electric power inspection robot oil immersion power transformer liquid level detection method

A power transformer and power inspection technology, applied in the field of image processing, can solve problems such as cumbersome steps and achieve strong robustness

Active Publication Date: 2017-07-18
CHONGQING UNIV OF POSTS & TELECOMM +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although manual operation is highly accurate, it makes the steps more cumbersome

Method used

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  • Electric power inspection robot oil immersion power transformer liquid level detection method
  • Electric power inspection robot oil immersion power transformer liquid level detection method
  • Electric power inspection robot oil immersion power transformer liquid level detection method

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Embodiment Construction

[0030] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0031] The technical scheme that the present invention solves the problems of the technologies described above is:

[0032] A liquid level detection method for an electric inspection robot, comprising the following steps: (1) Preprocessing the image (2) Acquiring the frame information of the liquid level gauge through template matching (3) Extracting the image of the liquid level gauge and correcting it (4) The image is divided into blocks (5) Gabor processing is performed on the block image to calculate the Gabor response value (6) The point with the largest mutation is found from the obtained response value image distribution map, and the position of the liquid level gauge is calculated.

[0033] Conver...

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Abstract

The invention relates to an electric power inspection robot oil immersion power transformer liquid level detection method comprising the following steps: preprocessing an image and matching a template so as to obtain liquid level framework information; extracting a liquidmeter image and rectifying the same; carrying out Gabor transverse filtering for the image; recording the response value of each line of the filter image; finding a first line subscript exceeding the threshold according to a response value distribution image; calculating the liquidmeter location. The features are that the method has high liquid level detection precision, is low in image preprocessing requirements, and has strong robustness on illumination and shadow interferences.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a liquid level detection method for an oil-immersed power transformer of a power inspection robot. Background technique [0002] In power systems, liquid level gauges are widely used. In the substation, it is necessary to monitor the pointer of the liquid level gauge in real time to prevent accidents caused by some parameters exceeding the standard. The current inspection method is mainly manual inspection. The efficiency of manual inspection readings is low, the error is large, and the risk is high. Therefore, it is necessary to invent a method for obtaining images by inspection robots and using efficient image processing technology to obtain the pointer position of the liquid level gauge, so as to improve efficiency and ensure the safe operation of the power system. [0003] In the substation, the liquid level indication of the liquid filling equipment indicates the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06K9/46
CPCG06T7/0004G06T7/001G06V10/443
Inventor 米建勋何艾莲邓欣杨清云付乾坤
Owner CHONGQING UNIV OF POSTS & TELECOMM
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