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公开(公告)号：EP1042545B1
公开(公告)日：2003-10-15
申请号：EP98957054.4
申请日：1998-12-11
发明人： CHU, Youe-Tsyr , YANKEE, Joseph, M. , REYNOLDS, Michael, H. , OXLEY, Ian, F. , WEIDMANN, Stefan , GHORASHI, Hossein, M.
CPC分类号： D01G31/003 , B65H63/065 , B65H2701/311
摘要： A device for measuring properties of fiber in a sliver (16) is constructed with a first (12) and second (14) curved aluminum guide piece that is coated with either TeflonTM or ceramic. The guides compress the sliver of fiber. A Xenon bulb (30) provides light which passes through a first transparent window (28) located in the first guide piece. The light then passes through the sliver of fiber and out of a second transparent window located in the second curved guide piece. The light is then focused by optics upon a charge coupled device camera (18). The charge coupled device camera uses an array of pixels to create an image of the compressed sliver of fiber. A pulse generator (38) provides simultaneous trigger signals to the Xenon bulb and the camera so that the image of the sliver of fiber is created at the same time as the light is produced. Processing means (36) identify patterns of dark pixels in the array as trash, neps, seed coat neps, and other impurities in the fiber by comparing the patterns of pixels in the array with patterns in a lookup table.
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公开(公告)号：EP1027594B1
公开(公告)日：2003-08-27
申请号：EP98950240.6
申请日：1998-10-27
发明人： IRICK, Glenn, E., Sr. , CHENG, Luo , CHU, Youe-Tsyr , GHORASHI, Hossein, M. , GALYON, Michael, E. , WILLIAMS, Gordon, F.
CPC分类号： G01N33/362 , G01N21/8915
摘要： A fiber quality monitoring apparatus is constructed with a sample window for viewing a fiber sample. As the fiber sample passes the sample window, a bulb is strobed to produce a light pulse that is directed toward and reflected by the fiber sample. When the light pulse reaches a desired intensity, a first photo diode generates a synchronization signal. A second photo diode detects reflected light with a wavelength between about 500 nanometers and about 600 nanometers and produces a reflection signal. A third photo diode detects reflected light with a wavelength between about 430 nanometers and about 530 nanometers and produces a color signal. A charge coupled device camera is positioned to receive the reflected light pulse. Pixels below a desired value are designated as dark pixels and pixels receiving the reflected light pulse at an intensity greater than the desired level are designated as light pixels.
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