包装印刷品二维码在线检测系统设计  

Design of on-line detection system for QR code of packaging printed matter

作　　者：杨乐[1] 周子振 蔡恩文 王正松 YANG Le;ZHOU Zizhen;CAI Enwen;WANG Zhengsong(Northeaster University,Qinhuangdao 066004,China)

机构地区：[1]东北大学,河北秦皇岛066004

出　　处：《包装与食品机械》2023年第4期90-95,共6页Packaging and Food Machinery

基　　金：国家自然科学基金(62203095);中央高校基本科研业务费(N2223024);河北省自然科学基金(F2021501009);河北省大学生科技创新能力培育专项(NEUQ202106)。

摘　　要：为解决包装印刷品生产过程中喷涂二维码的残缺、重复和缺失等质量问题,基于机器视觉技术设计一种二维码在线实时检测系统。通过相机、镜头、光源、色标传感器、编码器、滑台模组和控制器的合理选型完成系统硬件搭建,使用可编程逻辑控制器结合色标传感器和编码器对二维码进行实时定位,配合光源利用工业相机实现二维码的在线图像采集,并基于数字图像处理技术完成采集图像预处理。使用Visual Studio平台进行上位机软件开发,实现图像采集、图像预处理、二维码识别、缺陷检测与分类等功能。系统最高二维码识别速度7个/s,对错印、漏印和重码等缺陷问题误检率<0.05%,能够满足设计要求。研究为二维码在线检测系统开发提供借鉴。In order to solve the quality problems of incompleteness,repetition and missing of the sprayed QR codes in the production process of packaging printing,a QR code detection system was designed based on machine vision technology.Through the reasonable selection of camera,lens,light source,color code sensor,encoder,sliding module and controller,the system hardware was built.Programmable Logic Controller was used to locate the two-dimensional code in real time in combination with color code sensor and encoder,cooperate with the light source and use industrial camera to realize the online image acquisition of two-dimensional code,and complete the image acquisition preprocessing based on digital image processing technology.The host computer software was developed using Visual Studio platform to realize the functions of image acquisition,image preprocessing,two-dimensional code recognition,defect detection and classification.The maximum two-dimensional code recognition speed of the system is 7/s,and the false detection rate for defects such as wrong printing,missing printing and duplicate code is less than 0.05%,which can meet the design requirements.The study provides reference for the development of the QR code online detection system.

关 键 词：包装印刷 二维码检测 机器视觉 图像处理 

分 类 号：TB487[一般工业技术—包装工程]