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管道电弧声发射特征采集系统设计
引用本文:刘立君,兰虎,段宏伟,温建力.管道电弧声发射特征采集系统设计[J].焊接学报,2008,29(12):37-40.
作者姓名:刘立君  兰虎  段宏伟  温建力
作者单位:哈尔滨理工大学,材料科学与工程学院,哈尔滨150080;浙江大学,宁波理工学院,浙江,宁波,315100;哈尔滨理工大学,材料科学与工程学院,哈尔滨150080
基金项目:黑龙江省自然科学基金项目 , 宁波自然科学基金重点项目 , 黑龙江省青年骨干教师支持项目(1153G009;哈尔滨市科技创新人才基金项目  
摘    要:鉴于焊接电弧声信号中蕴涵着丰富的焊接状态信息,是焊接质量监控重要的源信号,而管道结构特征为电弧声发射信号在管内低噪声传播创造了条件。设计了管道电弧声发射采集硬件系统,主要由传感器、信号适配电路、数据采集卡和一体化工作站组成。采用图形化虚拟仪器编程语言LabVIEW,通过封装功能模块及调用硬件驱动的动态链接程序,设计了一套采用中断触发方式进行高速数据采集的电弧声发射软件系统。结果表明,该系统不仅能实现对电弧电压、焊接电流和电弧声发射信号的高速实时同步采集,并可将采集结果图形化显示,很好地解决了实时图形绘制难的问题,为进一步研究管道TIG焊接电弧声发射机理创造条件。

关 键 词:管道焊接  电弧声发射  图形化虚拟仪器编程语言
收稿时间:2007/12/3 0:00:00

Data collecting system of pipe arc acoustic emission characteristics
LIU Lijun,LAN Hu,DUAN Hongwei and WEN Jianli.Data collecting system of pipe arc acoustic emission characteristics[J].Transactions of The China Welding Institution,2008,29(12):37-40.
Authors:LIU Lijun  LAN Hu  DUAN Hongwei and WEN Jianli
Affiliation:School of Material Science & Engineering, Harbin University of Science and Technology, Harbin 150080, China;Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China,School of Material Science & Engineering, Harbin University of Science and Technology, Harbin 150080, China,School of Material Science & Engineering, Harbin University of Science and Technology, Harbin 150080, China and School of Material Science & Engineering, Harbin University of Science and Technology, Harbin 150080, China
Abstract:As the arc sound signal contains plenty of welding information which is an important source signal for welding quality control, arc acoustic emission signal (AAES) propagated in pipeline structure is low-noise, and AAES collecting system is designed for pipe TIG welding. The hardware system consists of sensor, signal adaptor circuit, data collecting card and industrial workstation. Based on virtual instrument programming software (LabVIEW), the high speed AAES collecting software system is designed by means of triggering interrupt, packaging function modules and calling dynamic link programs of the hardware driver. The AAES experimental results show that the system not only correctly collects arc voltage, welding current and AAES at high speed synchronously, but also displays the real-time graph of the signals. The whole AAES collecting platform will lay the foundation for further studying on the arc acoustic emission mechanism in the pipe TIG welding.
Keywords:pipe welding  arc acoustic emission  LabVIEW
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