Cable joint fault early warning system and method based on infrared and visible light image fusion

Abstract

The invention discloses a cable joint fault early warning system and method based on infrared visible light image fusion, and the system comprises an infrared thermal imager, a network camera, an image collector, and an image processing computer. Firstly, an infrared thermal imager and a network camera are used for collecting infrared and visible light image real-time information of an underground cable joint of a cable, and then an image collector transmits the displayed infrared and visible light image information to an image processing computer; the image processing computer carries out filtering, defogging and strengthening processing on the obtained infrared and visible light images, and then carries out an image fusion mode based on sparse representation on the processed images to generate a new fusion image; finally, the image processing computer judges the current heating condition of the cable joint through the fused image so as to achieve a fault early warning function on the cable joint. According to the method, installation is simple and convenient, unmanned inspection can be achieved to a certain extent, and the real-time early warning function of the cable joint fault under the cable well can be achieved.

Description

technical field [0001] The invention relates to the technical field of electric power inspection, in particular to a cable joint fault early warning system and method for infrared and visible light image fusion. [0002] technical background [0003] The cable well is established for the convenience of construction cable laying and inspection personnel for cable detection. [0004] At present, inspectors regularly conduct infrared temperature measurement on cables in cable wells. However, traditional infrared temperature measurement requires inspection personnel to do it by themselves. In addition, the environment in the cable well is harsh and there are many uncertain factors. real-time detection. Water is easy to accumulate in the cable shaft and damp, which will erode the cable joints, and the cable joints are prone to abnormal heating. Some cable shafts have installed network cameras, but the network cameras can only obtain information such as cables and scenes in the we...

AI Technical Summary

Problems solved by technology

[0004] At present, inspectors regularly conduct infrared temperature measurement on cables in cable wells. However, traditional infrared temperature measurement requires inspection personnel to do it by themselves. In addition, the environment in the cable well is harsh and there are many uncertain factors. real-time detection of

Water is easy to accumulate in the cable shaft and damp, which will erode the cable joints, and the cable joints are prone to abnormal heating. Some cable shafts have installed network cameras, but the network cameras can only obtain information such as cables and scenes in the wells, but cannot obtain heating information of cable joints. When the fault occurs and has caused serious losses, it is known that the cable joint has abnormal heating

[0005] The application publication number is CN112001260A, and the title of the invention is a patent for a cable trench fault detection method based on infrared and visible light image fusion. The dual-scale fusion method based on image saliency is used to fuse visible light images and infrared images. The method is based on preset It is easy to ignore some important features of the source image for image fusion

Images