Research on surface image acquisition system of train bearing cylindrical roller

The acquisition of high-quality surface images is an important step in the surface damage detection of bearing rollers. In order to improve the quality of image acquisition and take into account the acquisition efficiency, an image acquisition system is designed in this paper. Through the dynamic analysis method, it is proved that the amplitude of the roller itself has little effect on the image in the acquisition process. Subsequently, the response surface method is used to analyze the interactive effect of the light source intensity, incident angle and roller speed on the image quality, and the optimal acquisition parameter setting value suitable for this acquisition system is found. Finally, the image of the bearing cylindrical roller with surface defects is collected to obtain a clear surface image. This paper can provide reference for the design of high level image acquisition system.