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    Spectrometer with wide-scan tunable diode laser
    1.
    发明授权
    Spectrometer with wide-scan tunable diode laser 有权

    公开(公告)号：US11079324B2

    公开(公告)日：2021-08-03

    申请号：US16511429

    申请日：2019-07-15

    Applicant: SpectraSensors, Inc.

    Inventor： Xiang Liu ,  Alfred Feitisch ,  Gary Yeh ,  Chih-Hsuan Chang

    IPC: G01N21/39 ,  G01N21/01

    Abstract: A method for implementation by a laser spectrometer is provided. The method includes first scanning, by a control unit using a first set of laser spectrometer operating parameters, a first wavelength range by adjusting a wavelength of light of a beam emitted by a laser light source and passing through a sample gas. The first wavelength range encompasses a first spectral feature corresponding to a first constituent. The method also includes at least one second scanning, by the control unit using a second set of laser spectrometer operating parameters, a second wavelength range by adjusting the wavelength of light emitted from the laser light source and passing through the sample gas. The second wavelength range has a second spectral feature corresponding to at least one second constituent. The control unit also determines a first concentration of the first constituent and a second concentration of the at least one second constituent.

    Validation and correction of spectrometer performance using a validation cell
    3.
    发明授权
    Validation and correction of spectrometer performance using a validation cell 有权
    使用验证单元验证和校正光谱仪性能

    公开(公告)号：US08953165B2

    公开(公告)日：2015-02-10

    申请号：US13027000

    申请日：2011-02-14

    Applicant: Alfred Feitisch ,  Lutz Keller ,  Xiang Liu ,  Mathias Schrempel ,  Keith Benjamin Helbley

    Inventor： Alfred Feitisch ,  Lutz Keller ,  Xiang Liu ,  Mathias Schrempel ,  Keith Benjamin Helbley

    IPC: G01N21/27 ,  G01J3/28 ,  G01J3/42 ,  G01N21/03 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/3518 ,  G01N21/39

    CPC classification number: G01J3/28 ,  G01J3/42 ,  G01N21/031 ,  G01N21/274 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/3518 ,  G01N21/39 ,  G01N2021/399

    Abstract: Light intensity data quantifying intensity of light generated by a light source and received at a detector during a validation mode of an absorption spectrometer can be compared with a stored data set representing at least one previous measurement in a validation mode of an analytical system. The validation mode can include causing the light to pass at least once through each of a zero gas and a reference gas contained within a validation cell and including a known amount of a target analyte. The zero gas can have at least one of known and negligible first light absorbance characteristics within a range of wavelengths produced by the light source. A validation failure can be determined to have occurred if the first light intensity data and the stored data set are out of agreement by more than a predefined threshold amount. Related systems, methods, and articles of manufacture are also described.

    Abstract translation: 在吸收光谱仪的验证模式期间，由光源产生并在检测器处接收的光的光强度数据的量化可以与在分析系统的验证模式中表示至少一个先前测量的存储的数据集进行比较。 验证模式可以包括使光通过至少一次通过包含在验证单元内的零气体和参考气体中的每一个，并且包括已知量的目标分析物。 零气体可以具有由光源产生的波长范围内的已知和可忽略的第一光吸收特性中的至少一种。 如果第一光强度数据和存储的数据集超出预定义的阈值量，则可以确定已经发生验证失败。 还描述了相关系统，方法和制品。

    Mobile temperature sensor
    4.
    发明授权
    Mobile temperature sensor 失效
    手机温度传感器

    公开(公告)号：US08182143B2

    公开(公告)日：2012-05-22

    申请号：US11836588

    申请日：2007-08-09

    Applicant: Rex J. Fleming ,  Randy Dean May ,  W. Stephen Woodward

    Inventor： Rex J. Fleming ,  Randy Dean May ,  W. Stephen Woodward

    IPC: G01K1/02 ,  G01K17/06 ,  G01K17/10 ,  G01K13/02

    CPC classification number: G01K13/02 ,  G01K13/028

    Abstract: Ambient temperature for a temperature sensor can be calculated using a mobile temperature sensor system that samples air from the boundary layer around a mobile platform and passes the air through a measurement cell containing two flush-mounted or embedded sensor elements. A common reference voltage can be applied by control circuitry to minimize drift in the sensor element readings and to calculate the ambient temperature.

    Abstract translation: 可以使用移动式温度传感器系统来计算温度传感器的环境温度，该系统从移动平台周围的边界层采集空气，并将空气通过含有两个嵌入式或嵌入式传感器元件的测量单元。 控制电路可以应用公共参考电压，以最小化传感器元件读数中的漂移并计算环境温度。

    Scrubber for reactive gases
    5.
    发明授权
    Scrubber for reactive gases 有权
    反应气体的洗涤器

    公开(公告)号：US07829046B2

    公开(公告)日：2010-11-09

    申请号：US12202098

    申请日：2008-08-29

    Applicant: Marc M. Baum ,  John Moss ,  Xin Zhou ,  Alex Kwan ,  Alfred Feitisch ,  Xiang Liu

    Inventor： Marc M. Baum ,  John Moss ,  Xin Zhou ,  Alex Kwan ,  Alfred Feitisch ,  Xiang Liu

    IPC: B01D47/00 ,  B01J38/12

    CPC classification number: B01D53/685 ,  B01D53/42 ,  B01D53/52 ,  B01D53/58 ,  B01D2251/512 ,  B01D2251/602 ,  B01D2251/606 ,  B01D2259/40

    Abstract: Scrubber media for reactive gases, that can include but are not necessarily limited to hydrogen chloride (HCl), hydrogen sulfide (H2S), hydrogen fluoride (HF), and ammonia (NH3), can include reactive particles, potentially as small as nano-scale, that can optionally be suspended on macro-scale carrier particles. Reactive gases can be converted to non-volatile compounds by being passed through a bed of such scrubber media. Such scrubber media can be used to remove reactive gases from gas mixtures. Potential applications include differential absorption spectroscopy, air pollutant emission controls, and the like. Methods of preparing scrubber media are also described.

    Abstract translation: 可以包括但不限于氯化氢（HCl），硫化氢（H 2 S），氟化氢（HF）和氨（NH 3））的反应性气体的洗涤介质可以包括可能小至纳米级的反应性颗粒， 可以任选地悬浮在大规模载体颗粒上。 反应性气体可以通过穿过这种洗涤介质的床而转化为不挥发性化合物。 这种洗涤介质可用于从气体混合物中除去反应性气体。 潜在应用包括差示吸收光谱，空气污染物排放控制等。 还描述了制备洗涤介质的方法。

    Spectrometer with active beam steering
    7.
    发明授权
    Spectrometer with active beam steering 有权

    公开(公告)号：US10309828B2

    公开(公告)日：2019-06-04

    申请号：US15730548

    申请日：2017-10-11

    Applicant: SpectraSensors, Inc.

    Inventor： Alfred Feitisch ,  Xiang Liu ,  Keith Benjamin Helbley ,  Douglas Beyer

    IPC: G01J3/02 ,  G01J3/42 ,  G01N21/31

    Abstract: A spectrometer includes a light source that emits a beam into a sample volume comprising an absorbing medium. Thereafter, at least one detector detects at least a portion of the beam emitted by the light source. It is later determined, based on the detected at least a portion of the beam and by a controller, that a position and/or an angle of the beam should be changed. The beam emitted by the light source is then actively steered by an actuation element under control of the controller. In addition, a concentration of the absorbing media can be quantified or otherwise calculated (using the controller or optionally a different processor that can be local or remote). The actuation element(s) can be coupled to one or more of the light source, a detector or detectors, and a reflector or reflectors intermediate the light source and the detector(s).

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