A live detection method for high-voltage cables based on compound vision

A live detection, high-voltage live technology, applied in the field of visual inspection, to improve the reliability of detection, improve the comprehensiveness and timeliness, and improve the comprehensiveness of detection.

Active Publication Date: 2015-12-09
HOHAI UNIV CHANGZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Visible light imaging sensors have a good detection effect on external defects and suspended foreign objects on high-voltage cables, but for internal faults in cables, visible light imaging is powerless

Method used

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  • A live detection method for high-voltage cables based on compound vision
  • A live detection method for high-voltage cables based on compound vision
  • A live detection method for high-voltage cables based on compound vision

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Experimental program
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Embodiment Construction

[0016] Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described as follows:

[0017] (1) Build a platform and collect data:

[0018] On the high-voltage cable live inspection robot, an optical imaging camera and an infrared imaging camera are installed, and optical images and infrared images of the same high-voltage live cable are collected.

[0019] (2) Description of abnormal characteristics of high-voltage cable live detection:

[0020] Based on historical data and actual needs, adopt the method of multivariate statistical analysis, select unified and standardized abnormal features, and establish a feature library to lay the foundation for subsequent detection and evaluation. Feature extraction is a prerequisite for abnormal judgment. Choose reasonable image features and feature description operators to make them have good representation performance. Color, shape, texture, and brightness are commonly used features to d...

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Abstract

The invention discloses a charged detection method of a high-voltage cable based on composite vision. The method comprises the following steps: 1) collecting an optical image and an infrared image in the same high-voltage charged circuit; 2) describing charged detection abnormal features of the high-voltage, and establishing a knowledge base; 3) integrating heterogeneous information of the optical image and the infrared image; 4) performing similarity measuring on the integrated information and the knowledge base, and constantly enriching and updating the knowledge base through a self-learning process; and 5) marking the on-line detection anomaly of the high-voltage cable. The invention provides a composite vision method which is based on infrared imaging and optical visible light imaging, and used for charged detection of the high-voltage cable, so that both the inside anomaly and outside anomaly can be detected, and real-time requirements can be met; and on the basis, the charged detection anomaly of the high-voltage cable is marked and abnormal parameters and development tendency are evaluated.

Description

technical field [0001] The invention belongs to the field of visual detection, is the application of image processing and recognition technology, and specifically relates to a high-voltage cable electrification detection method based on compound vision. Background technique [0002] The research method of vision-based high-voltage cable live detection technology has become a research hotspot and one of the future development directions because of its intuition, safety, efficiency and universality. At present, the conventional method for live detection of high-voltage cables is to detect hot spots along high-voltage lines with thermal imaging cameras manually or by helicopters, that is, live detection of high-voltage lines based on infrared imaging. Infrared imaging detection has the advantages of long distance, no power failure, no contact, no disassembly, etc., and has excellent safety and reliability. The infrared imaging sensor has good detection performance on hot targe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50G01N21/88
Inventor 史朋飞范新南张卓谢迎娟张继
Owner HOHAI UNIV CHANGZHOU
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