在点焊、缝焊,特别是凸焊生产中,接头质量在很大程度上由焊接电流值决定,因此,焊接过程中定期检测焊接电流是很有必要的。所周知,常用的电流值(有效值、幅值、平均值)中的任何一个都不能全面反映焊接过程,且测量有效值要进行函数变换,因而使仪器复杂化,可靠性降低,价格提高 In spot welding, seam welding, especially convex welding production, joint quality is largely determined by the welding current value, therefore, the welding process of regular testing of welding current is necessary. It is well-known that any one of the commonly used current values ​​(rms, amplitude, average) can not fully reflect the welding process and the rms values ​​need to be function-transformed, complicating the instrument, reducing reliability and increasing the price