| 基于结构光的水下焊接熔池宽度在线检测 |
| |
| 引用本文： | 张为民,王国荣,石永华,李鹤喜. 基于结构光的水下焊接熔池宽度在线检测[J]. 焊接学报, 2008, 29(6): 33-36 |
| |
| 作者姓名： | 张为民 王国荣 石永华 李鹤喜 |
| |
| 作者单位： | 华南理工大学,机械工程学院,广州,510640;广州航海高等专科学校,计算机与信息工程系,广州,510725;华南理工大学,机械工程学院,广州,510640 |
| |
| 摘 要： | 直接拍摄水下焊接熔池图像来检测焊接熔池宽度实现难度较大,提出了一种通过成形焊缝结构光条纹图像来完成水下焊接熔池宽度在线检测的方法.将装有防水罩的激光结构光视觉传感器安装在焊枪之后置于水下,针对水下成形焊缝图像特点,经图像加窗、拉普拉斯锐化、二值化以及数学形态学滤波和图像细化处理,就能够在线获得焊接熔池宽度.结果表明,处理过程速度快,检测结果精度高.当条纹检测点和熔池中心之间的距离小于35 mm时,焊接熔池宽度相对误差可控制在3%以内.
|
| 关 键 词： | 水下焊接 焊接熔池宽度 条纹结构光 图像处理 |
| 文章编号： | 0253-360X(2008)06-0033-04 |
| 收稿时间： | 2007-08-16 |
| 修稿时间： | 2007-08-16 |
On-line detection of underwater molten pool width based on structured light |
| |
| ZHANG Weimin,WANG Guorong,SHI Yonghua and LI Hexi. On-line detection of underwater molten pool width based on structured light[J]. Transactions of The China Welding Institution, 2008, 29(6): 33-36 |
| |
| Authors: | ZHANG Weimin WANG Guorong SHI Yonghua LI Hexi |
| |
| Affiliation: | School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China;Department of Computer Science and Information Technology, Guangzhou Maritime College, Guangzhou 510725, China,School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China,School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China and School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China |
| |
| Abstract: | It is very difficult to detect molten pool width by directly acquiring its in underwater welding.Based on strip-structured weld image, a on-line detection method of molten pool width is proposed.The laser-structured vision sensor is fixed behind the welding torch and put into water with waterproof guard.According to the feature of underwater weld image, the molten pool width is extracted through window processing, laplace sharpening, thresholding, mathematic morphology filtering and thinning procedure.The experimental results show that the processing speed is fast and the detection precision is high.If the distance between the molten pool centre and the strip light detecting point is less than 35 mm, the comparative error of molten pool width can be controlled within 3%. |
| |
| Keywords: | underwater welding molten pool width stripstructured light image processing |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载免费的PDF全文 |
|
