铝合金焊接熔池图象传感器

Image sensor for welding pool of aluminum alloy

采用图象处理与模式识别的方法对铝合金的焊接质量进行智能控制还没有成功 ,因为铝合金表面不同于其它黑色金属 ,铝合金表面反射全波段的可见光 ,熔池与周围金属的灰度对比度极弱 ,在焊接电流较大时弧光强烈 ,弧光以及熔池周围金属的反射光足以掩盖熔池 ,普通的光学传感器无法在上述苛刻条件下取得铝合金焊接熔池区域的图象。通过光谱分析 ,可以设计全新的光学传感器 ,利用普通工业CCD摄像机获得清晰的铝合金焊接熔池区域图象 。

The way that use the image proceeding and the pattern recognition to intelligently control the quality of the aluminum alloy's welding has not been succeed in the manufacture.It is mainly because that the surface of the aluminum can reflect the visible light in whole wave range. The contrast between the welding pool and the plate nearby is too weak,the arc light and the light reflected by the surface of the aluminum is so strong that it submerges the welding pool.We designed a completely new optical sensor on the base of the analysis to the light spectrum,and obtained the clear picture of the welding pool during the aluminum alloy's welding by using the common industrial CCD camera;and with the new algorithm provided by myself,the desirable characteristic parameters of the welding pool of aluminum alloy's welding is obtained.This means that which provides a good background for advance aluminum alloy's intelligent welding.