The wheel abrasion measurement of automatic guide vehicle assisted with an image processing system

• Main Authors: Zhao-Yi Wang, 王紹義
• Other Authors: 李吉群
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/30674770249439697385

碩士 === 國立中興大學 === 機械工程學系所 === 103 === The research “the wheel abrasion for automatic guide vehicle assisted with an image processing system” develops a kind of fast and simple measurement mainly. Monitor the change of the wheel abrasion for automatic guide vehicle wheel in the factory of TFT-LCD. This system has untouchable, non-destructive, erect the system quickly which also not measures by the space limitation. And the light source of this system comes from the laser light source, so it can do the long distance measurement that different from measurement of shade law has distances restriction. The developed system mainly consists of a linear laser structure light、a CCD camera, Raspberry Pi computer, linear guide, dial indicator, a programmable image process and measurement. According to the pin camera model, perspective projection, world coordinate system and camera coordinate system transformation theorem, a correlation was investigated between the surface abrasion of the wheel measured with dial indicators instrument and the laser line intensity maximum projected onto the wheel surface. The abrasion value of the object can be calculated, base on the offset between the position projected onto the object and the position projected onto platform after carry out the calibration with different offset image. If the wheel surface is damaged, it can be detected. The developed system was applied to measure the wheel abrasion for automatic guide vehicle assisted. The wheel abrasion standard deviation was about 0.04mm. In addition, the position related to the damage of wheel surface could also detected by the developed system.