CO_2焊电参数与熔滴过渡图像同步采集分析系统

Synchronous acquisition and analysis of metal transfer images and electrical parameters in CO_2 arc welding

基于LabVIEW,采用高速摄像机和多路传感数据采集系统,开发了一套CO2焊短路过渡过程电参数波形与熔滴过渡图像采集分析系统.通过软件延时弥补电参数采集系统与图像采集系统的启动延迟时间差,实现了同步采集.系统可对采集到的电参数进行处理,得出反映熔滴过渡状态和稳定性的特征参量.通过焊接试验,实时采集不同焊接条件下电参数及熔滴过渡图像,对电参数与短路过渡过程的相关性进行了分析.

By using high speed camera and multi-channel sensing and data acquisition system,a LabVIEW-based system was developed to acquire metal transfer images and electrical parameters in short circuiting CO2 arc welding.The difference in startup delay time between data acquisition system and high speed camera was calibrated by experiment,and the offset by software method to realize synchronous acquisition.The system was used to analyze the electrical parameters and metal transfer images.Metal transfer under different welding conditions was investigated and the correlation between electrical parameters,metal transfer image and the stability of short-circuiting transfer process was analyzed with the developed system.