CO_2激光切割质量的视觉检测(Ⅰ)切割缺陷的同轴视觉检测  

Quality Monitoring for CO_2 Laser Cutting with Visual Sensing System(Ⅰ) Defect Detection with Coaxial Visual Sensing System

作　　者：张永强[1] 吴艳华[1] 陈武柱[1] 张旭东[1] 

机构地区：[1]清华大学机械工程系

出　　处：《应用激光》2006年第3期148-150,156,共4页Applied Laser

基　　金：国家自然科学基金(50175061);清华大学重点研究基金(012-101050)项目

摘　　要：研制了基于同轴视觉的CO2激光切割质量监测系统,获得了切割前沿的视觉图像,成功提取了切割缺陷的特征信号。结果表明:过烧缺陷的特征是图像中切割前沿上缘和下缘波动发生向上跳变,而挂渣缺陷的图像特征是仅下缘波动发生向上跳变。A coaxial vision sensing system for CO2 laser cutting is designed. By coaxially detecting the images of the cutting front, the relationship between the detected signals and cutting defect has been obtained. The characteristic signal responding to burning occurrence is the jumping standard deviation of both DCF （Distance from Beam Center to Front Edge） and DCB （Distance from Beam Center to Back Edge） of the detected image, while dross occurrence only inducing the jumping standard deviation of DCB.

关 键 词：激光切割 视觉传感 缺陷检测 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TG485[自动化与计算机技术—计算机科学与技术]