公开(公告)号：US5684598A

公开(公告)日：1997-11-04

申请号：US586122

申请日：1996-01-16

申请人： Peter Harke ,  Hans Willi Louis ,  Wolfgang Worbs

发明人： Peter Harke ,  Hans Willi Louis ,  Wolfgang Worbs

IPC分类号： B65H63/032 ,  B65H63/06 ,  D02H13/08 ,  G01N21/89

CPC分类号： G01N21/8915 ,  B65H63/0324 ,  B65H63/065 ,  D02H13/08 ,  G01N21/8903 ,  B65H2701/31 ,  B65H2701/38

摘要： Process for monitoring a moving yarn sheet by means of a light beam, photodetectors and an electronic analyzer, whereby the yarn sheet is guided via thread guide rods before and after the monitoring site and the shadowing of the light beam caused by an increase in thread thickness is directed perpendicularly to the direction of travel of the yarn sheet for detection by photodetectors, and evaluated and recorded by the electronic analyzer, characterized in that the intensity of a single light beam is detected by at least two photodetectors arranged in series in the direction of travel of the yarn sheet and in that the evaluation by the electronic analyzer is such that a recording only takes place when the shadowing is detected by one or more of said photodetectors following in the direction of travel of the yarn sheet with a time delay corresponding to the running speed of the yarn sheet is disclosed. It is preferred to employ at least four photodetectors of which at least two are situated in series in the direction of travel of the yarn sheet and at least two are arranged one above the other such that at least one photodetector is positioned below the yarn sheet plane and at least one photodetector is positioned above the yarn sheet plane.

摘要翻译： 用于通过光束，光电检测器和电子分析仪监测移动纱线片的方法，由此纱线片通过导丝杆在监测部位之前和之后被引导，并且由于螺纹厚度的增加而导致的光束的阴影 垂直于用于由光电检测器检测的纱线片的行进方向，并由电子分析仪评估和记录，其特征在于，通过至少两个光电检测器检测单个光束的强度，该至少两个光电检测器沿 并且由电子分析仪进行的评估使得只有当一个或多个所述光电检测器沿着纱线的行进方向检测到阴影时，时间延迟对应于 公开了纱线片的运转速度。 优选使用至少四个光电检测器，其中至少两个在纱线的行进方向上串联布置，并且至少两个光电检测器一个在另一个之上布置，使得至少一个光电检测器位于纱线片平面下方 并且至少一个光电检测器位于纱线片平面上方。