High-voltage breaker moving contact movement track real-time identification method based on priori knowledge

Abstract

The invention discloses a high-voltage breaker moving contact movement track real-time identification method based on priori knowledge. The method includes the following steps: a red square marker is fixed on a breaker insulating pull rod; the position of a high-speed camera is adjusted, and a marker image sequence is obtained; a tracking target template is determined; a maximum search range of a current frame is determined according to priori knowledge; a priority search sequence of a next frame of target is determined according to priori knowledge, and coarse search is performed on each pixel point of an embedded dual hexagons in sequence; rhombus fine search is performed around an optimal pixel point, the position of the target is determined, and a priori knowledge base is updated at the same time; and the position of the target in an image in each frame is recorded, and a movement track is generated. The high-voltage breaker moving contact movement track real-time identification method provide by the invention is based on a breaker motion characteristic monitoring priori knowledge base, makes improvements on an existing target tracking algorithm, fully excavates and utilizes effective information of the priori knowledge base, proposes an embedded dual hexagon-rhombus fast search algorithm on this basis, and can realize real-time and precise moving contact movement track identification.

Description

technical field [0001] The invention relates to the technical field of image recognition, in particular to a method for real-time and accurate recognition of the moving track of a moving contact of a high-voltage circuit breaker. [0002] technical background [0003] In the testing of mechanical characteristic parameters of high-voltage circuit breakers, the moving track of the moving contact is an important detection parameter. Research on the identification method of moving contact trajectory of high-voltage circuit breaker is of great significance to the safe and reliable operation of power system. [0004] The existing methods are mainly contact measurement methods with the help of sensors. This type of method needs to select suitable photoelectric sensors for different types of circuit breakers to obtain circuit breaker movement information. These sensors are installed on the operating mechanism or the main shaft. Not only is it possible Since the gap in the installati...

AI Technical Summary

Problems solved by technology

Among them, the block matching motion estimation algorithm is a global matching method, which obtains an ideal matching result by performing one or even multiple operations on all pixel values ​​on the entire image, so it has a high search accuracy. degree, but the computational complexity of the algorithm is too high, when the block and search area are large, the speed is very slow, and it is not suitable for real-time applications

On the basis of the original block matching algorithm, there are some improved algorithms, such as three-step search (TSS), four-step search (FSS) and diamond search (DS), etc. still needs to be improved

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