High-precision gasket thickness measuring and classifying system based on line-structured light
In this paper,a high-precision flat gasket thickness measuring and classifying system based on line-structured light is presented.The system consists of a part feeding device,a measurement platform,a measurement and control subsystem and a classifying subsystem.The measurement system is based on the optical trigonometry measurement principle.Different from other common measurement system,a line-structured light instead of a beam is projected to the surface of the measured object.From a stripe the measured result will get more confirmation than a single beam spot.More than one frame of image are grabbed and averaged to reduce the random error.The gravity center algorithm is used to extract the center-point of the stripe in one column.According to the least squares method,a straight line can be fitted from gravity center-points extracted.A virtual grate is designed to improve the resolution of the measurement system.The calibration of the measurement system is designed and realized.An experiment is built and the measurement result is analyzed.The result shows that the uncertainty of the measurement system is limited in ± 0.003mm.And this system can be used for classifying the gaskets by thickness.
thickness measurement high-precious measurement line-structured light virtual grate
Qinghua Wu Tao He Tielin Shi
School of Mechanical Science and Engineering, Huazhong University of Science and Technology,Wuhan 43 School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China;The Key Lab. o School of Mechanical Science and Engineering, Huazhong University of Science and Technology,Wuhan 43
国际会议
2012第八届精密工程测量和仪器仪表国际研讨会(ISPEMI2012)
成都
英文
1-7
2012-08-08(万方平台首次上网日期,不代表论文的发表时间)