基于光电成像的轴类尺寸多参数测量  

The Measurement for Shaft’s Size with Multiple Parameters Based on Optoelectronic Imaging

作　　者：付书媛 陆佳琪 丁畅 黄扬 高兴宇[1] 赵泽鑫 FU Shu-yuan;LU Jia-qi;DING Chang;HUANG Yang;GAO Xing-yu;ZHAO Ze-xin(School of Mechanical and Electronical Engineering,Guilin University of Electronic Technology,Guilin 541004,China;Key Laboratory Co-sponsored Foundation by Province and Ministry,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]桂林电子科技大学机电工程学院,桂林541004 [2]桂林电子科技大学认知无线电与信息处理重点实验室,桂林541004

出　　处：《组合机床与自动化加工技术》2022年第7期152-155,159,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金(52005119);广西自然科学基金(2020GXNSFBA297077);广西创新驱动发展专项基金(AA18118002-3);桂林市科学研究与技术开发计划项目(20210217-17);认知无线电与信息处理-省部共建重点实验室基金(CRKL200103);广西高校中青年教师科研基础能力提升项目(2020KY05019);广西区级大学生创新创业训练项目(201910595236、S202110595126);中国国家留学基金(202108455015)。

摘　　要：针对轴类工件尺寸的人工测量强度大,传统图像处理算法精度低等问题,搭建了待测曲轴的光电成像装置,通过提取边缘线特征点完成直线拟合的方法实现了轴颈直径的高精度测量。首先,通过梯度算子二值化方法增强边缘线对比度,然后,提出了一种平行边缘线拟合测距的方法,最后,做到了平行边缘线的计算机图形学展示,增强了算法的可视化效果,与实际的轴颈直径相比,测量误差在0.01 mm以内;与传统霍夫变换直线检测算法相比,做到了亚像素级测量。Aiming at the disadvantage of artificial measurement with high intensity and conventional image processing algorithm with low accuracy,this paper establishes the optoelectronic imaging instrument of the shaft and measures the shaft neck’s diameter with high accuracy by the extraction of the edge lines’feature point and the fitting of the line.First,the enhancement algorithm of edge line based on the binarization of the gradient operator is proposed,which can enhance the image’s edge line’s contrast,second,the method of distance measurement by fitting the paralleled edge lines is proposed.Finally,this paper shows the paralleled edge lines in the computer graphic,which can enhance the visual effect of the algorithm.With the comparison of the factual diameter of the shaft neck,the algorithm’s error is less than 0.01 mm,and with the comparison of conventional Hough transformation,this proposed algorithm can achieve the measurement accuracy of sub-pixel.

关 键 词：计算机测量 图像增强 边缘线拟合 工业相机 光电平台 

分 类 号：TH165[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]