Cable insulation layer defect detection method and device

Abstract

The invention discloses a cable insulation layer defect detection method and device. The cable insulation layer defect detection method comprises the following steps of image acquisition: acquiring and acquiring a picture of a cable; image preprocessing: carrying out image preprocessing on the image of the cable and denoising; and cable defect detection: carrying out image segmentation of a background region and a defect region on the denoised cable defect image, carrying out defect length calculation on the segmented cable defect image to obtain a defect area, and identifying whether the cable is defected or not according to the defect area. The method does not depend on manual access to an underground channel for checking, and completely detects whether the insulating layer of the cableis damaged or not through an image technical means. If the defect of the insulating layer of the cable is found, an alarm can be given out, evidence is reserved in screenshots, and corresponding personnel can rush to corresponding positions in time for processing. In this way, safety problems and fire disasters in the manual inspection process can be greatly reduced or even eliminated.

Description

technical field [0001] The invention belongs to the technical field of image recognition, and in particular relates to a method and a device for detecting a cable insulation layer defect. Background technique [0002] Cable trenches are essential infrastructure in power plants, substations, and power grid distribution systems, and are mainly used to place cables. Since the cables laid in the cable trench involve equipment such as relay protection, automatic control, communication, measurement and metering, they are the nerve centers of power plants, substations, distribution systems and substations. Once a cable fails, it is not only difficult to check and deal with, If it takes a long time, the relay protection or control circuit may fail, causing the accident to expand or even damage the main equipment, and the production cannot be resumed for a long time. Therefore, strengthening the management of the cable trench and protecting the cables in the cable trench from damage...

AI Technical Summary

Problems solved by technology

[0003] Usually, the space of the cable trench in the power plant is narrow and the light is dim, and it is inconvenient for the on-site staff to enter the cable trench to carry out maintenance work

Moreover, the defect of the cable insulation layer in the cable trench is a common problem in the cable trench. These problems can easily cause the cable to heat up or even fire, causing huge property losses and possibly life-threatening; Economic losses

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