基于LabView虚拟仪器的CO_2焊接参数采集分析系统

A system of welding parameter collection and analysis based on LabView VI

描述了基于NI虚拟仪器的焊接参数采集分析系统。作者设计了焊接电流和焊接电压信号采集电路 ,并针对焊接过程的不同阶段 ,加入时刻标定信号 ,方便后续分析 ,并在文中详细介绍了系统的软件流程。通过实际焊接试验 ,实时采集和显示各个信号波形 ,同时系统能够对相应的焊接电流和焊接电压进行统计分析运算 ,得到研究所关心的焊接过程特征参数以及对焊接过程主要参数的概率密度分布图。试验表明该系统工作稳定 ,采集数据完整可靠。

A welding parameter collection and analysis system which is based on NI Virtual Instrument is described.A welding current and welding voltage signal collection circuit is designed.For farther research demarcated signals are added to represent different welding period.This article introduces software flow chart of the system in detail.The system can collect and display signals in real-time,and use the statistical analyzing method to transfer current and voltage signals into accessible format.By this means,the welding process’ characteristic parameters can be extracted out and shown in the probability density distributing diagrams.Experimentations prove that this system works in stabilization,satisfy the CO_2 arc welding process,and the collected data is full and credible.