Infrared gas analyzer with automatic zero adjustment
    2.
    发明授权
    Infrared gas analyzer with automatic zero adjustment 失效
    红外气体分析仪具有自动调零功能

    公开(公告)号:US4687934A

    公开(公告)日:1987-08-18

    申请号:US818342

    申请日:1986-01-10

    Abstract: Automatic zeroing apparatus zeroes an infrared gas analyzer automatically upon the occurrence of preselected conditions to indicate zero in the absence of absorption of infrared radiation by a gas mixture being analyzed. The gas analyzer has a sample cell for containing a gas mixture to be analyzed. Infrared radiation directed through the sample cell is detected at a preselected wavelength to produce a detection signal. A signal processor outputs a signal systematically related to the difference between the detection signal and a reference signal. For zeroing the sample cell is filled with gas substantially nonabsorbent of infrared radiation at the respective characteristic wavelength. A comparator produces an error signal when the output signal differs from zero. A gain control automatically controls the signal level of the detection signal to reduce the output signal substantially to zero with the nonabsorbent gas filling the sample cell. The preselected conditions may include the passage of a predetermined time and a temperature drift beyond a predetermined limit.

    Abstract translation: 自动归零装置在发生预选条件时自动归零红外气体分析仪,以便在被正在分析的气体混合物不吸收红外辐射时指示为零。 气体分析仪具有用于容纳要分析的气体混合物的样品池。 以预选的波长检测引导通过样品池的红外辐射,以产生检测信号。 信号处理器输出与检测信号和参考信号之间的差异系统地相关的信号。 为了归零,样品池中填充有相应特征波长的基本上不吸收红外辐射的气体。 当输出信号与零不同时,比较器产生一个误差信号。 增益控制器自动控制检测信号的信号电平,使填充样品池的非吸收气体将输出信号基本上降至零。 预选条件可以包括经过预定时间和温度漂移超出预定极限。

    Spectroscopic Device and Shape Measurement Device

    公开(公告)号:US20240319087A1

    公开(公告)日:2024-09-26

    申请号:US18612104

    申请日:2024-03-21

    Abstract: A spectroscopic device includes: an analysis optical system; a length measurement optical system; and a calculation device. The analysis optical system includes a moving mirror and a first light receiving element. The length measurement optical system includes a second light source configured to emit laser light, a gas cell with a gas that absorbs light of a predetermined wavelength sealed therein and configured to cause the laser light to be incident thereon, an emitted light amount detection unit configured to detect an amount of light emitted from the gas cell and output an emitted light amount detection signal, a light source control unit configured to control a wavelength of the laser light based on the emitted light amount detection signal, and a length measurement unit configured to use the laser light to obtain a displacement signal corresponding to a position of the moving mirror, and the calculation device includes a moving mirror position calculation unit, a light intensity calculation unit, and a Fourier transform unit configured to generate a spectral pattern.

    FOCUSING LINEAR MODEL CORRECTION AND LINEAR MODEL CORRECTION FOR MULTIVARIATE CALIBRATION MODEL MAINTENANCE

    公开(公告)号:US20230160812A1

    公开(公告)日:2023-05-25

    申请号:US18151632

    申请日:2023-01-09

    Abstract: A device may obtain a master beta coefficient of a master calibration model associated with a master instrument. The master beta coefficient may be at a grid of a target instrument. The device may perform constrained optimization of an objective function, in accordance with a set of constraints, in order to determine a pair of transferred beta coefficients. The constrained optimization may be performed based on an initial pair of transferred beta coefficients, the master beta coefficient, and spectra associated with a scouting set. The device may determine, based on the pair of transferred beta coefficients, a transferred beta coefficient. The device may determine a final transferred beta coefficient based on a set of transferred beta coefficients including the transferred beta coefficient. The final transferred beta coefficient may be associated with generating a transferred calibration model, corresponding to the master calibration model, for use by the target instrument.

    Inspection systems and methods for extending the detection range of an inspection system by forcing the photodetector into the non-linear range
    5.
    发明授权
    Inspection systems and methods for extending the detection range of an inspection system by forcing the photodetector into the non-linear range 有权
    用于通过强制光电探测器进入非线性范围来扩展检查系统的检测范围的检查系统和方法

    公开(公告)号:US07746462B2

    公开(公告)日:2010-06-29

    申请号:US11751293

    申请日:2007-05-21

    Abstract: An inspection system and method is provided herein for increasing the detection range of the inspection system. According to one embodiment, the inspection system may include a photodetector having a plurality of stages, which are adapted to convert light scattered from a specimen into an output signal, and a voltage divider network coupled for extending the detection range of the photodetector (and thus, the detection range of the inspection system) by saturating at least one of the stages. This forces the photodetector to operate in a non-linear manner. However, measurement inaccuracies are avoided by calibrating the photodetector output to remove any non-linear effects that may be created by intentionally saturating the at least one of the stages. In one example, a table of values may be generated during a calibration phase to convert the photodetector output into an actual amount of scattered light.

    Abstract translation: 本文提供了一种用于增加检查系统的检测范围的检查系统和方法。 根据一个实施例,检查系统可以包括具有多个级的光电检测器,其适于将从样本散射的光转换成输出信号,以及耦合的用于扩展光电检测器的检测范围的分压器网络 ,检查系统的检测范围)通过饱和至少一个级。 这迫使光电探测器以非线性方式工作。 然而,通过校准光电检测器输出以消除可能通过故意饱和至少一个级而产生的任何非线性效应来避免测量不准确。 在一个示例中,可以在校准阶段期间生成值表,以将光电检测器输出转换成实际的散射光量。

    Inspection Systems and Methods for Extending the Detection Range of an Inspection System by Forcing the Photodetector into the Non-Linear Range
    6.
    发明申请
    Inspection Systems and Methods for Extending the Detection Range of an Inspection System by Forcing the Photodetector into the Non-Linear Range 有权
    检测系统和方法通过强制光检测器进入非线性范围来扩展检测系统的检测范围

    公开(公告)号:US20080291454A1

    公开(公告)日:2008-11-27

    申请号:US11751293

    申请日:2007-05-21

    Abstract: An inspection system and method is provided herein for increasing the detection range of the inspection system. According to one embodiment, the inspection system may include a photodetector having a plurality of stages, which are adapted to convert light scattered from a specimen into an output signal, and a voltage divider network coupled for extending the detection range of the photodetector (and thus, the detection range of the inspection system) by saturating at least one of the stages. This forces the photodetector to operate in a non-linear manner. However, measurement inaccuracies are avoided by calibrating the photodetector output to remove any non-linear effects that may be created by intentionally saturating the at least one of the stages. In one example, a table of values may be generated during a calibration phase to convert the photodetector output into an actual amount of scattered light.

    Abstract translation: 本文提供了一种用于增加检查系统的检测范围的检查系统和方法。 根据一个实施例,检查系统可以包括具有多个级的光电检测器,其适于将从样本散射的光转换成输出信号,以及耦合的用于扩展光电检测器的检测范围的分压器网络 ,检查系统的检测范围)通过饱和至少一个级。 这迫使光电探测器以非线性方式工作。 然而,通过校准光电检测器输出以消除可能通过故意饱和至少一个级而产生的任何非线性效应来避免测量不准确。 在一个示例中,可以在校准阶段期间生成值表,以将光电检测器输出转换成实际的散射光量。

    INFRARED GAS ANALYZER WITH AUTOMATIC ZERO ADJUSTMENT
    7.
    发明公开
    INFRARED GAS ANALYZER WITH AUTOMATIC ZERO ADJUSTMENT 失效
    具有自动校零SETTING IR气体分析仪。

    公开(公告)号:EP0253872A1

    公开(公告)日:1988-01-27

    申请号:EP87900946.0

    申请日:1987-01-09

    Abstract: Un appareil de remise à zéro automatique remet automatiquement à zéro un analyseur de gaz aux infra-rouges lorsque des conditions présélectionnées se produisent, afin d'indiquer l'état zéro en cas d'absorption nulle des rayonnements infra-rouges par un mélange de gaz en cours d'analyse. L'analyseur de gaz comprend une cellule d'échantillonage (11) qui contient un mélange de gaz que l'on veut analyser. Les rayonnements infra-rouges envoyés à travers la cellule d'échantillonnage (11) sont détectés à une longueur d'onde présélectionnée afin de produire un signal de détection. Un processeur de signaux sort des signaux systématiquement associés à la différence entre le signal de détection et un signal de référence. Pour la remise à zéro, la cellule d'échantillonnage (11) est remplie d'un gaz sensiblement non-absorbant des rayonnements infra-rouges à la longueur d'onde caractéristique respective. Un comparateur génère un signal d'erreur lorsque le signal de sortie diffère de zéro. Une commande de gain (DAC 21) commande automatiquement le niveau des signaux de détection afin de réduire le signal de sortie sensiblement à zéro lorsque le gaz non-absorbant remplit la cellule d'échantillonnage (11). Les conditions présélectionnées peuvent inclure l'écoulement d'une période de temps prédéterminée et une dérive de la température au-delß de limites prédéterminées.

    INFRARED GAS ANALYZER WITH AUTOMATIC ZERO ADJUSTMENT.
    8.
    发明公开
    INFRARED GAS ANALYZER WITH AUTOMATIC ZERO ADJUSTMENT. 失效
    具有自动校零SETTING IR气体分析仪。

    公开(公告)号:EP0253872A4

    公开(公告)日:1990-04-10

    申请号:EP87900946

    申请日:1987-01-09

    Abstract: Automatic zeroing apparatus zeroes an infrared gas analyzer automatically upon the occurrence of preselected conditions to indicate zero in the absence of absorption of infrared radiation by a gas mixture being analyzed. The gas analyzer has a sample cell (11) for containing a gas mixture to be analyzed. Infrared radiation directed through the sample cell (11) is detected at a preselected wavelength to produce a detection signal. A signal processor outputs a signal systematically related to the difference between the detection signal and a reference signal. For zeroing the sample cell (11) is filled with gas substantially nonabsorbent of infrared radiation at the respective characteristic wavelength. A comparator produces an error signal when the output signal differs from zero. A gain control (DAC 21) automatically controls the signal level of the detection signal to reduce the output signal substantially to zero with the nonabsorbent gas filling the sample cell (11). The preselected conditions may include the passage of a predetermined time and a temperature drift beyond a predetermined limit.

    INFRARED GAS ANALYZER WITH AUTOMATIC ZERO ADJUSTMENT
    9.
    发明授权
    INFRARED GAS ANALYZER WITH AUTOMATIC ZERO ADJUSTMENT 失效
    具有自动校零SETTING IR气体分析仪。

    公开(公告)号:EP0253872B1

    公开(公告)日:1994-04-20

    申请号:EP87900946.2

    申请日:1987-01-09

    Abstract: Automatic zeroing apparatus zeroes an infrared gas analyzer automatically upon the occurrence of preselected conditions to indicate zero in the absence of absorption of infrared radiation by a gas mixture being analyzed. The gas analyzer has a sample cell (11) for containing a gas mixture to be analyzed. Infrared radiation directed through the sample cell (11) is detected at a preselected wavelength to produce a detection signal. A signal processor outputs a signal systematically related to the difference between the detection signal and a reference signal. For zeroing the sample cell (11) is filled with gas substantially nonabsorbent of infrared radiation at the respective characteristic wavelength. A comparator produces an error signal when the output signal differs from zero. A gain control (DAC 21) automatically controls the signal level of the detection signal to reduce the output signal substantially to zero with the nonabsorbent gas filling the sample cell (11). The preselected conditions may include the passage of a predetermined time and a temperature drift beyond a predetermined limit.

    INSPECTION SYSTEMS AND METHODS FOR EXTENDING THE DETECTION RANGE OF AN INSPECTION SYSTEM BY FORCING THE PHOTODETECTOR INTO THE NON-LINEAR RANGE
    10.
    发明申请
    INSPECTION SYSTEMS AND METHODS FOR EXTENDING THE DETECTION RANGE OF AN INSPECTION SYSTEM BY FORCING THE PHOTODETECTOR INTO THE NON-LINEAR RANGE 审中-公开
    检查系统和方法,用于通过将光电转换成非线性范围来扩展检测系统的检测范围

    公开(公告)号:WO2008144318A1

    公开(公告)日:2008-11-27

    申请号:PCT/US2008/063541

    申请日:2008-05-13

    Abstract: An inspection system and method is provided herein for increasing the detection range of the inspection system. According to one embodiment, the inspection system may include a photodetector having a plurality of stages, which are adapted to convert light scattered from a specimen into an output signal, and a voltage divider network coupled for extending the detection range of the photodetector (and thus, the detection range of the inspection system) by saturating at least one of the stages. This forces the photodetector to operate in a non-linear manner. However, measurement inaccuracies are avoided by calibrating the photodetector output to remove any non-linear effects that may be created by intentionally saturating the at least one of the stages. In one example, a table of values may be generated during a calibration phase to convert the photodetector output into an actual amount of scattered light.

    Abstract translation: 本文提供了一种用于增加检查系统的检测范围的检查系统和方法。 根据一个实施例,检查系统可以包括具有多个级的光电检测器,其适于将从样本散射的光转换成输出信号,以及耦合的用于扩展光电检测器的检测范围的分压器网络 ,检查系统的检测范围)通过饱和至少一个级。 这迫使光电探测器以非线性方式工作。 然而,通过校准光电检测器输出以消除可能通过故意饱和至少一个级而产生的任何非线性效应来避免测量不准确。 在一个示例中,可以在校准阶段期间生成值表,以将光电检测器输出转换成实际的散射光量。

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