Yan-guo Wang
ABSTRACT
The interaction of pantograph-catenary is an important interaction relationship between vehicles and railway infrastructure, which determines the stability of power supply in high-speed railways. Dynamic performance of pantograph-catenary has to be checked regularly, in which the technology of machine vision plays an important role. Compared with video surveillance and other traditional industrial applications, there are some special technical problems in the dynamic detection of pantograph-catenary interaction, such as huge difference on outdoor light environments, rapid change of image background, and serious motion blur at high speed. In this paper, we proposed a method of visual inspection on pantograph-catenary interaction, based on technologies of high-frequency synchronous lighting and wide dynamic range imaging, and a vision system was developed. The advantages of the proposed method have been showed in experimental test, and the image quality has been significantly improved in high-speed dynamic scene, which shows great potential in visual data analysis in the dynamic detection on pantograph-catenary interaction.
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