Split knife switch opening and closing angle detection method based on automatic positioning

Abstract

The invention provides a split knife switch opening and closing angle detection method based on automatic positioning. The method comprises the steps of collecting a sample image of a split knife switch for training to obtain a segmentation model; collecting any template image of the knife switch; obtaining the actual contour boundaries of all insulators and knife switch arms in the image and theknife switch state according to the segmentation model; carrying out edge detection on the template image, screening edge lines in the edge line set according to the actual contour boundary of the knife switch arm to obtain upper and lower edge lines of the knife switch arm, and estimating the center line of the insulator according to the actual contour boundary of the insulator; pairing all the knife switch arms, and calculating the center line of each knife switch arm according to the pairing combination and the center line of the insulator; collecting a target image, and determining the final left and right knife switch arm edge lines of each knife switch by using the assistance of the middle line; and calculating an included angle between the left knife switch arm and the right knife switch arm. According to the invention, the problem that whether the split knife switch is opened and closed in place is difficult to quickly and accurately detect in actual use is solved, and the detection precision is improved.

Description

technical field [0001] The invention relates to the technical field of image recognition, in particular to a method for detecting the opening and closing angle of a split knife switch based on automatic positioning. Background technique [0002] Knife switch is an electrical appliance that is used very frequently in high-voltage switching appliances, and it plays an isolation role in the circuit. In practical applications, due to the long-term operation of the knife switch, the opening and closing of the knife switch may not be in place, which will cause an arc between the left and right knife switch arms of the knife switch. Arc is a gas discharge phenomenon. The instantaneous spark generated by the current passing through some insulating media may cause fire or threaten personal safety; in addition, the arc temperature is extremely high, and it is easy to burn the insulating material, causing leakage events or causing damage to the knife switch equipment. ; Therefore, the...

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Problems solved by technology

[0004] In order to solve the problem in the prior art that it is difficult to quickly and accurately detect whether the split knife switch is in place, the present invention proposes a method for detecting the opening and closing angle of the split knife switch based on automatic positioning

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