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Pointer instrument reading recognition method of substation inspection robot

A technology for inspection robots and instrument readings, which is applied in the field of image processing, can solve problems such as pointer recognition errors, and achieve the effect of avoiding instrument positioning errors and strong robustness

Inactive Publication Date: 2017-08-25
CHONGQING UNIV OF POSTS & TELECOMM +1
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AI Technical Summary

Problems solved by technology

[0010] In the identification process of the instrument pointer, the traditional method uses a straight line detection method to determine the position of the pointer, which is easily interfered by light, dial marks, and small stains, resulting in pointer recognition errors

Method used

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  • Pointer instrument reading recognition method of substation inspection robot
  • Pointer instrument reading recognition method of substation inspection robot
  • Pointer instrument reading recognition method of substation inspection robot

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Embodiment Construction

[0039] 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.

[0040] The technical scheme that the present invention solves the problems of the technologies described above is:

[0041] A pointer instrument reading recognition method for a substation inspection robot, the process is as follows figure 1 , including the following steps: (1) According to the error range of the preset parking position identified by the robot at each meter, extract the image of the region where the meter will appear (2) perform edge detection on the region, and (3) use the fast Hough transform again Carry out circular detection to determine the position of the dial, (4) perform multi-angle Gabor filtering on the extracted dial area image (5) calculate the response value for each angle fi...

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Abstract

The invention claims the protection of a pointer instrument reading recognition method of a substation inspection robot. The method includes the steps of taking a photo using preset parking of a robot at an instrument to be recognized, roughly positioning the position of the instrument, then performing edge detection for the region, next, performing circle detection using fast Hough transform to determine the position of a dial plate, extracting the dial plate region for multi-angle Gabor filtering to calculate the direction of a pointer, and calculating the reading of the instrument on that basis. The method has the characteristics of low pre-processing requirement, fewer steps, strong robustness for illumination, shadows and other interference, and high accuracy of reading instrument data.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an efficient automatic recognition method for pointer meter readings. Background technique [0002] In the power system, the pointer instrument has a wide range of applications. In substations, real-time monitoring of instrument readings is required 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 meter readings, so as to improve efficiency and ensure the safe operation of the power system. [0003] The substation inspection robot is based on a mobile platform with autonomous navigation and precise positioning, and integrates sensors such as visible li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V20/20
Inventor 米建勋何艾莲邓欣杨清云董博翔
Owner CHONGQING UNIV OF POSTS & TELECOMM
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