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| Switching Arc’s Image Gathering and Processing in AC Contactors |
| Liu Jiaomin1, Sun Yi1, Wang Zhenzhou2, Li Li3 |
| 1. North China Electric Power University Baoding 071003 Hebei China 2. Hebei University of Science and Technology Shijiazhuang 050018 China 3. Hebei University of Technology Tianjin 300130 China |
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Abstract A new type of switching arc image acquisition system (including image acquisition, transmission, storage, processing etc.) was developed by a comprehensive utilization of the computer vision technology, the optoelectronic technology, the CCD （Charge Coupled Device）high speed image formation technology and the computer imagery processing technology. With this system can be obtained a series images of the low-voltage apparatus switching arc from burning to extinguish can be obtained.In order to suppress the noise and enhance the signal-to-noise ratio effectively, this paper applies the self-adaptive median filter to eliminate stochastic noise at first, and then uses Laplacian mask sharpening to highlight the images, thus makes the proceeded arc movement images clear enough to satisfy the request of arc diameter change analysis and computing. Through analysis of a series of proceeded switching arc images from burning to extinguish. The characteristics of the low-voltage contact device breaking arc’s burning process are concluded and the features of obtained arc movement images are in accordance with a massive arc simulation results are discovered.
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Received: 06 February 2009
Published: 04 March 2014
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2010, Vol. 25 
