【摘要】 在PC机上利用VisualC++6.0开发了CO2气体保护焊焊接过程电量信号采集系统.利用多线程技术与双缓冲区技术解决了高速数据采集时丢失数据的问题.分析结果表明:所开发系统能精确完整地采集到焊接过程中的电量信号,而且通过电流电压概率密度分布与熔滴过渡短路时间频数分布能直观地分析焊接过程的稳定性,为进一步研究焊接过程质量监测奠定基础.更多还原

【Abstract】 By means of Visual C++ 6.0,a system on PC is developed for sampling and analyzing CO₂ welding electrical signals.The data-losing problem can be avoided by use of the multithreading technique and double buffer method.Analytical results show that this system can collect the voltage and current signals wholly and accurately throughout the welding process and,furthermore,can clearly analyze the stability of the CO₂ welding process with reference to the current and voltage PDD （probability density distribution） and CFD （count of frequency distribution） diagrams.This system provides a basis for further research on the welding quality monitoring.更多还原