Surface Scar Detection Method for Key Parts of High-Speed Trains Based on Infrared Thermal Imaging Technology
The conventional detection method of surface scars of key parts of Electric Multiple Units(EMU)is mainly based on scar sample clustering,which can not effectively detect small scars and affect the stable operation of EMU.Based on this,a method of surface scar detection of key parts of EMU based on infrared thermal imaging technology is designed.The scar features on the surface of key parts of EMU were extracted,and the shape,temperature distribution,texture,region and other features of the scars on the surface of key parts of EMU were extracted,and the scar types were determined according to the actual infrared imaging data.Based on infrared thermal imaging technology to detect the scar boundary on the surface of EMU components,the infrared thermal imager is used to scan the EMU components to obtain the temperature distribution image of the surface scar,so as to determine the boundary range and avoid the problem of scar detection errors.Comparative experiments show that this method is more accurate and can be used in real testing.
infrared thermal imaging technologymultiple unit trainskey partssurface scarstest method
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