基于PLC和机器视觉的O型密封圈尺寸检测系统设计  

Design of O-ring seal size detection system based on PLC and machine vision

作　　者：张大为 沈勇[1] ZHANG Dawei;SHEN Yong(School of Electrical Information Engineering,Yunnan Minzu University,Kunming 650000,China)

机构地区：[1]云南民族大学电气信息工程学院,云南昆明650000

出　　处：《电子设计工程》2021年第14期163-167,共5页Electronic Design Engineering

基　　金：2019年云南省专业学位研究生教学案例库资助项目(云学位{2019}17)。

摘　　要：为了克服传统人工检测方法效率低、误检率高等不足,提出了一种基于机器视觉和PLC的自动化检测系统。检测对象为O型密封圈。文中进行了O型密封圈视觉检测系统设计的技术研究。当O型密封圈由传送带运送到相机正下方,由传感器反馈给相机自动采集信号,相机采集到图像后,通过图像操作、图像滤波、图像增强、图像分割和边缘检测等图像处理技术,测量O型密封圈的尺寸。不合格产品通过PLC控制的动作装置分拣剔除。实验结果显示,O型密封圈检测准确率达到98%,检测精度为0.1 mm,该视觉检测系统达到了工业上对密封圈尺寸检测的要求。In order to overcome the inefficiencies of traditional manual detection methods such as low efficiency and high false detection rate,an automated detection system based on machine vision and PLC was proposed.The test object is an O-ring.This paper expands the technical research on the design of Oring visual inspection system.When the O-ring is transported by the conveyor belt directly under the camera,the sensor feeds back to the camera to automatically collect signals.After the image is collected by the camera,image processing techniques such as image manipulation,image filtering,image enhancement,image segmentation,and edge detection are implemented.Measure the size of O-ring.Unqualified products are sorted and removed by the action device controlled by PLC.The experimental results show that the detection accuracy of the O-ring seal reaches 98%,and the detection accuracy is0.1 mm.The visual detection system has met the industrial requirements for the detection of the size of the seal ring.

关 键 词：机器视觉 PLC 自动化检测 技术研究 图像处理 密封圈 

分 类 号：TN919.5[电子电信—通信与信息系统] TP273[电子电信—信息与通信工程]