摘要
针对窄间隙旋转电弧MAG焊焊缝跟踪的需要以及单一传感器的不足,采用Visual C++开发了基于电弧传感和视觉传感的多信息融合焊缝跟踪系统。电弧传感采用NIPCI-6251数据采集卡、电流/电压传感器、电弧位置传感器结合NI的measurement studio软件,实现了对每个电弧旋转周期内电弧信号的获取,进而实现积分法、极值法、粗糙集等电弧传感方法。视觉传感利用图像采集卡、电弧位置传感器和CCD摄像机,获取电弧旋转到左右坡口侧时的焊接图像,实现焊缝偏差的检测。而焊缝跟踪是综合电弧传感焊缝偏差和视觉传感焊缝偏差的基础上进行焊缝纠偏。为提高系统运行效率,采用多线程方法实现电弧传感、视觉传感的同步采集和技术;利用CTimer控件实现焊缝偏差的多信息融合分析、显示和记录。系统的构建为进一步的多信息融合控制、焊接质量控制奠定基础。
According to the demand of seam tracking for narrow gap rotating MAG arc welding,a seam tracking was developed by Visual C ++ based on the information fusion with arc sensor and vision sensor.First,arc sensing system includes the NI PCI-6251 DAQ card,welding current/voltage sensor,arc position sensor,which extract the arc signal in each rotating cycle,and complete the integral method,extreme value method and rough set method for arc sensor.Second,vision sensing system includes the Image DAQ card,arc position sensor and CCD cameras in trigger mode,and it can obtain two images when the arc is near the left side or right side of groove,which makes it easy to get the welding deviation.In addition,to improve the system operability,the arc sensing system and vision sensing system were run synchronously with multithread technology,and the CTimer control was used to fulfill the analysis,display,record and track of weld deviation information.The system is helpful for further information fusion control and welding quality control.
出处
《焊接》
北大核心
2014年第10期30-33,69,共4页
Welding & Joining
基金
国家自然科学基金(51005107
51475218)
高等学校博士学科点专项科研基金(20133220110001)
江苏省自然科学基金(BK2011509)
江苏省高校"青蓝工程"科技创新团队
青年骨干教师资助项目
