Vision sensing of P-GMAW weld pool using narrow band filters with different center wavelengths  

作　　者：梁志敏 汪殿龙 王军 

机构地区：[1]School of Material Science and Technology, Hebei University of Science and Technology, Shijiazhuang, 050018

出　　处：《China Welding》2013年第1期41-46,共6页中国焊接（英文版）

基　　金：Acknowledgement The authors are grateful to the financial support for this project from the National Natural Science Foundation of China under grant No. 51005069.

摘　　要：The selection of narrow band filter＇s center wavelength has an important influence on the quality of the weld pool image captured in passive vision mettmd for controlling arc welding process. In this paper, 29 narrow band filters with different center wavelengths ranging from ultraviolet to near infrared wavelength were used to capture images of weld pool during both the peak current period and the base current period of P-GMA W （ pulsed gas metal arc welding）. The experimental results showed that the filters with near infrared center wavelength could weaken the arc most during the peak current period, while during the base current period the entire weld pool could be seen with the filters with wavelength above 600 nm. The camera spectral response and the radio of arc to weld pool emission were considered to analyze the phenomenon of experimental results.The selection of narrow band filter＇s center wavelength has an important influence on the quality of the weld pool image captured in passive vision mettmd for controlling arc welding process. In this paper, 29 narrow band filters with different center wavelengths ranging from ultraviolet to near infrared wavelength were used to capture images of weld pool during both the peak current period and the base current period of P-GMA W （ pulsed gas metal arc welding）. The experimental results showed that the filters with near infrared center wavelength could weaken the arc most during the peak current period, while during the base current period the entire weld pool could be seen with the filters with wavelength above 600 nm. The camera spectral response and the radio of arc to weld pool emission were considered to analyze the phenomenon of experimental results.

关 键 词：narrow band filter weld pool vision sensing pulsed gas metal arc welding 

分 类 号：TN713[电子电信—电路与系统] TN253