【作者】 吴庆华； 钟飞； 夏明安； 何涛；

【Author】 Wu Qinghua~(1,2) Zhong Fei~(1,2) Xia Ming’an~(1,2) He Tao~(1,2) (1.The school of Mechanical Engineering of Hubei University of Technology,Wuhan,430068 China; 2.The Key Lab.of Advanced Manufacture and Quality Engineering of Hubei Province,Wuhan 430068,China)

【机构】 湖北工业大学机械工程学院； 现代制造与质量工程湖北省重点实验室；

【摘要】 本文采用光切法对薄片零件进行非接触在线厚度测量。线结构光投射在被测对象上形成一条被零件表面调制的光带,采用带阈值的重心法提取光条中心,然后对获得的重心序列分别进行最小二乘直线拟合,由拟合直线间距换算出被测零件厚度。实验数据表明,该方法具有一定的可靠性,可以广泛应用于工业现场零部件厚度在线测量。更多还原

【Abstract】 In this paper,a line-shape structure light,CCD sensor,Jens and computer are used to online measure the thickness of a thin part.When a line-shape structure light projects to the surface of the part,a light line will appear on the field of the lens.The methods to extract the center of light line are discussed.A threshold value is set to filter background noise of the image,and the center is calculated as the center of line.After all the center points are got,a new line can be fitted according to the least squares value rule.The distance between each new line is just the thickness of the part.A set of experiment device is built to test the method, and a conclusion is drawn that this method can be used to online measure the thickness of thin part.更多还原