手表定子片数字图像测量系统
2020-10-23
作者：陈泽彬，林锦昊，王美清，陈飞
单位：福州大学数学与计算机学院
摘要：手表中微小零件的检测精度影响手表的使用寿命及走时精度，其零件特殊，且在25mm以内，精度要求均在微米级别。设计手表零件定子片图像测量系统，运用机器视觉测得定子片的圆心距离和外形轮廓。用Hough变换提取圆心坐标，计算圆心距，并采用外形允差对比算法实现零件轮廓度的比对。将其封装成数字图像检测系统进行手表零件全检，提高了检测精度与检测效率。实验证明，数字图像检测系统能实现对手表零件的高效率和高精度测量，达到自动化生产线的检测要求。
关键词：机器视觉；Hough变换；轮廓度；外形允差
中图分类号：TG87；TH741文献标志码：ADOI：10.3969/j.issn.1000-7008.2020.07.023
Watch Stator Plate Digital Image Measurement System
Chen Zebin，Lin Jinhao，Wang Meiqing，Chen Fei
Abstract:The detection accuracy of the tiny parts of the watch affects the life and travel time accuracy of the watch.Watch parts are special，the size of which is within 25mm，and the accuracy requirements are on the micron level.In this paper，a stator image measurement system is designed to measure the distance between the center of the stator and its contour using machine vision.The coordinates of the center of the circle are extracted by Hough transform，and the centertocenter distance is calculated.Then use the shape tolerance comparison algorithm to achieve the comparison of the contours parts.It is packaged into a digital image detection system，which enables full inspection of watch parts and improves detection accuracy and detection efficiency.Experiments have confirmed that the digital image detection system can achieve highefficiency and highprecision measurement of watch parts and meet the production inspection requirements of automated production lines.
Keywords:machine vision；Hough transform；profile；shape tolerance