Application of Welding Electrical Signal Monitoring and Analysis System Based on Virtual Instrument

Abstract

In this paper, a welding electrical signal monitoring and analysis has been established basing on virtual instrument. The system contains two parts that are hardware and software. Hardware of the VI system using the data acquisition card, shielding box, control module is made by national instrument. Software including data collection and analysis system are programming using LabVIEW. Two groups of welding electrical signal getting from the two welders by same process have been acquired and analyzed using the system. The results of each analysis module have a high consistency. The system can accurately evaluate welding spatter size, welding stability and melt transfer in the welding process. Additionally, the system has the characters of friendly interface, simple operation, stable performance and high-reliability. Therefore, the system established in this paper can satisfy the requirements of monitoring and analysis during the quality of welding process.