Computer Vision Based Vacuum Circuit-Breaker's Stroke Parameter Automatic Measurement
Shutao Zhao, Jing Chi, Baoshu Li · 2009
In order to solve the existing deficiencies of measuring the vacuum circuit-breakerpsilas stroke parameter, this paper proposes a new non-contact measurement method based on modern computer vision technology. Firstly, during the movement of switching operation of the vacuum circuit-breaker, CCD camera is utilized as the detect sensor to capture special images with specific screw fixed in the moving conduction-bar; secondly, the quality of the images is enhanced by image preprocessing, such as image filter, enhancement and distorted calibration etc.; and then recognizing the position of the specific screwpsilas axes by using template matching technique; at last calculating stroke parameter value according to the axespsila displacement and translate to the real-world results. The experimental results shows that the proposed method not only can realize a non-contact measurement of the vacuum circuit-breakerpsilas stroke parameter, but also can meet the needs of quickly and precise measuring in power test field experiment.