SYSTEM AND METHOD FOR MEASURING CHARACTERISTICS LIKE THE BASIS WEIGHT OF A WEB USING BETA RAYS WITH CORRECTION AS REGARDS THE COMPOSITION OF THE WEB

    公开(公告)号:CA2532462C

    公开(公告)日:2013-02-05

    申请号:CA2532462

    申请日:2004-07-23

    Applicant: ABB INC

    Abstract: Beta gauge composition correction is performed using signals from a plurality of detectors (32) that are positioned so that the ratio of radiation received by the detectors depends on the composition of material through which the radiation passes before reaching the detectors. Radiation is measured at the detectors and the differences between radiation received by the detectors is used to compensate the beta gauge to correct for composition variations. An array (A) of detectors is divided into inner detectors (I) generally aligned with the central portion of a beta radiation beam (22b) and at least one set of outer detectors (O) surrounding, at least in part, the inner detectors. Measurements are made including all the detectors, the inner detectors and the at least one set of outer detectors with the difference between the measurements made by the inner detectors and the outer detectors being used to compensate the total measurement made by all the detectors.

    METHODS AND APPARATUS FOR DETERMINING MINERAL COMPONENTS IN SHEET MATERIAL

    公开(公告)号:CA2395107C

    公开(公告)日:2010-09-21

    申请号:CA2395107

    申请日:2000-12-26

    Applicant: ABB INC

    Abstract: A method and system for on-line measurements of mineral additives in or on a paper web (16) utilizing shaped spectrum x-rays and solid-state PIN detectors. Each of three detectors (20, 22, 24) are covered by a filter (26, 28, 30) used to shape the spectrums of x-rays received by the detectors. The filters are selected to maximize sensibility differences between detectors for the desired detectable mineral additives. A computer (31, 40) processes signals from the detectors and from basis weight and moisture measuring instruments (42) to determine total mineral content, and the individual amounts of mineral additives in or on (e.g. coating) the paper web.

    4.
    发明专利
    未知

    公开(公告)号:DE60040239D1

    公开(公告)日:2008-10-23

    申请号:DE60040239

    申请日:2000-12-26

    Applicant: ABB INC

    Abstract: A method and system for on-line measurements of mineral additives in or on a paper web utilizing shaped spectrum x-rays and solid-state PIN detectors. Each of three detectors are cover by a filter used to shape the spectrums of x-rays received by the detectors. The filters are selected to maximize sensitivity differences between detectors for the desired detectable mineral additives. A computer processes signals from the detectors and from basis weight and moisture measuring instruments to determine total mineral content, and the individual amounts of mineral additives in or on (e.g. coating) the paper web.

    SYSTEM AND METHOD FOR MEASURING CHARACTERISTICS LIKE THE BASIS WEIGHT OF A WEB USING BETA RAYS WITH CORRECTION AS REGARDS THE COMPOSITION OF THEWEB

    公开(公告)号:CA2532462A1

    公开(公告)日:2005-02-10

    申请号:CA2532462

    申请日:2004-07-23

    Applicant: ABB INC

    Abstract: Beta gauge composition correction is performed using signals from a plurality of detectors that are positioned so that the ratio of radiation received by the detectors depends on the composition of material through which the radiation passes before reaching the detectors. Radiation is measured at the detectors and the differences between radiation received by the detectors is used to compensate the beta gauge to correct for composition variations. An array of detectors is divided into inner detectors generally aligned with the central portion of a beta radiation beam and at least one set of outer detectors surrounding, at least in part, the inner detectors. Measurements are made including all the detectors, the inner detectors and the at least one set of outer detectors with the difference between the measurements made by the inner detectors and the outer detectors being used to compensate the total measurement made by all the detectors.

    METHODS AND APPARATUS FOR DETERMINING MINERAL COMPONENTS IN SHEET MATERIAL

    公开(公告)号:CA2395107A1

    公开(公告)日:2001-07-12

    申请号:CA2395107

    申请日:2000-12-26

    Applicant: ABB INC

    Abstract: A method and system for on-line measurements of mineral additives in or on a paper web (16) utilizing shaped spectrum x-rays and solid-state PIN detector s. Each of three detectors (20, 22, 24) are covered by a filter (26, 28, 30) us ed to shape the spectrums of x-rays received by the detectors. The filters are selected to maximize sensibility differences between detectors for the desir ed detectable mineral additives. A computer (31, 40) processes signals from the detectors and from basis weight and moisture measuring instruments (42) to determine total mineral content, and the individual amounts of mineral additives in or on (e.g. coating) the paper web.

    AN INFRARED MEASURING APPARATUS AND METHOD FOR ON-LINE APPLICATION IN MANUFACTURING PROCESSES
    8.
    发明申请
    AN INFRARED MEASURING APPARATUS AND METHOD FOR ON-LINE APPLICATION IN MANUFACTURING PROCESSES 审中-公开
    一种用于在制造过程中在线应用的红外测量装置和方法

    公开(公告)号:WO2004031752A3

    公开(公告)日:2004-07-15

    申请号:PCT/US0331142

    申请日:2003-10-02

    Applicant: ABB INC

    Abstract: A single vane (46, 48) shutter flag (38) is asynchronously controlled (82) so that a measuring system light source (22) is interrupted for a minimum necessary amount of time for standardization/calibration and normalization of InGaAs system detectors (68a - 68d). Source/detector hemispheres (50, 62) or serially connected randomly oriented fiber bundles (132) homogenize light passing to the detectors. Light source testing is performed by measuring spectral power distributions at a plurality of light source power levels and comparing the measurements to baseline characteristics established for the light source. Calibration sample life is extended indefinitely by controlling the shutter flag to block source light except for short calibration time periods during which standard light levels are provided.

    Abstract translation: 对一个单叶片(46,48)快门标志(38)进行异步控制(82),从而使测量系统光源(22)中断所需的最小时间量,用于InGaAs系统检测器(68a)的标准化/校准和归一化 - 68d)。 源/检测器半球(50,62)或串联连接的随机取向的纤维束(132)使通过检测器的光均匀化。 光源测试是通过测量多个光源功率水平下的光谱功率分布并将测量结果与为光源建立的基线特性进行比较来执行的。 校准样本寿命通过控制快门标志来阻止源光而无限延长,除了提供标准光照水平的短校准时间段外。

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