旁路耦合电弧MIG焊熔池视觉实时检测  

Real-time visual detection of welding pool in double-electrode MIG welding

作　　者：石玗[1] 汪海涛[1] 薛诚[2] 刘啸天[2] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050 [2]兰州理工大学有色金属合金及加工教育部重点实验室,兰州730050

出　　处：《焊接学报》2011年第2期29-32,114,共4页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(50805073);兰州理工大学优秀青年教师培养基金资助项目(Q200901);甘肃省自然科学基金资助项目(1010RJZA044)

摘　　要：提出了一种高效旁路耦合电弧MIG焊方法,针对该方法利用普通CCD摄像机配合复合滤光镜片在连续大电流条件下,获取了清晰的熔池图像.利用数字图像处理技术,通过Labview软件IMAQ模块对熔池图像进行实时处理,通过对比分析各种图像处理方法提取熔池边缘的结果,得到了最佳的形态学处理方法,并进行了熔池宽度的实时检测.结果表明,文中提出的图像处理系统可以满足图像实时检测的时间和精度要求,为进一步实现旁路耦合电弧MIG焊质量控制奠定了基础.An efficient bypass arc welding method was presented.By employing common CCD camera with composite filter glass,the clear image of welding pool was captured under the condition of continuous high current.With digital graphic processing technique,images were processed in real time by IMAQ module of Labview.The best morphological processing approach was obtained by comparing the width of molten pool extracted in various image processing methods.The width of molten pool can be measured and the data can be saved automatically.It laid a foundation for the realization of quality control in double-electrode MIG welding.

关 键 词：旁路耦合电弧 熔池边缘提取 形态学 

分 类 号：TG9[金属学及工艺—钳工工艺]