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    FIBRE OPTIC MEASURING APPARATUS
    12.
    发明专利
    FIBRE OPTIC MEASURING APPARATUS 未知

    公开(公告)号：CA2553488A1

    公开(公告)日：2005-08-18

    申请号：CA2553488

    申请日：2005-01-27

    Applicant: ABB INC

    Inventor： STURM STEVEN PERRY ,  MAXSON RODNEY DALE ,  DAUGHERTY DENNIS CHARLES

    IPC: G01N21/89 ,  G01N21/25 ,  G01N21/31 ,  G01N21/35 ,  G01N21/86

    Abstract: A measuring apparatus (10) is provided having an illumination unit (20) including a source of electromagnetic radiation (22), fiber optic apparatus (30) and sensing apparatus (40). The fiber optic apparatus includes first fiber optic structure (110) having an input end (114) for receiving at least a portion of electromagnetic radiation emitted from the radiation source and a n output end (116) for directing the received radiation to a web of material (100), and second fiber optic structure (80) having an input end (84) for receiving radiation reflected from the web of material and an output end (86 ) for directing the reflected radiation to the sensing apparatus. The sensing apparatus includes a first detector (90) for sensing electromagnetic radiati on of a first wavelength band and generating a corresponding first output signa l and a second detector (90) for sensing electromagnetic radiation of a second wavelength band and generating a corresponding second output signal indicati ve of a first property to be measured of the web of material.

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