Signal Processing Method for Arc Sensor

Signal process method is very important in welding automation and arc sensor is a kind of welding-sensor which works on the relationship between welding current and arc length. The using of Wavelet transform (WT) for detecting of welding gun slop with arc sensor is discussed in this paper. Sensor structure is introduced at first, and then Wavelet transform (WT) is induced into its signal processing for reason of strong interference during welding process, conclusions can be drawn on the basis of large amount tests that WT is feasible and effective here in spite of strong interference.