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    Concentration measurement device
    1.
    发明授权
    Concentration measurement device 有权

    公开(公告)号：US11796458B2

    公开(公告)日：2023-10-24

    申请号：US17423500

    申请日：2020-01-21

    Applicant: FUJIKIN INCORPORATED

    Inventor： Masaaki Nagase ,  Kazuteru Tanaka ,  Masahiko Takimoto ,  Kouji Nishino ,  Nobukazu Ikeda

    IPC: G01N21/3504

    CPC classification number: G01N21/3504 ,  G01N2201/062 ,  G01N2201/1211 ,  G01N2201/1218

    Abstract: A Concentration measurement device 100 comprises: a measurement cell 4 having a flow path through which a gas flows, a light source 1 for generating incident light to the measurement cell, a photodetector 7 for detecting light emitted from the measurement cell, a pressure sensor 20 for detecting a pressure of the gas in the measurement cell, a temperature sensor 22 for detecting a temperature of the gas in the measurement cell, and an arithmetic circuit 8 for calculating a concentration of the gas based on an output P of the pressure sensor, an output T of the temperature sensor, an output I of the photodetector, and an extinction coefficient α, wherein the arithmetic circuit 8 is configured to calculate the concentration using the extinction coefficient α determined on the basis of the output of the temperature sensor 22.

    METHOD FOR THE LASER SPECTROSCOPY OF GASES
    3.
    发明申请
    METHOD FOR THE LASER SPECTROSCOPY OF GASES 审中-公开
    气体激光光谱法

    公开(公告)号：US20140067282A1

    公开(公告)日：2014-03-06

    申请号：US14013788

    申请日：2013-08-29

    Applicant: SICK AG

    Inventor： Thomas BEYER ,  Julian EDLER

    IPC: G01N21/25

    CPC classification number: G01N21/255 ,  G01J3/28 ,  G01J3/433 ,  G01N21/274 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/399 ,  G01N2201/0691 ,  G01N2201/1211 ,  G01N2201/1215 ,  G01N2201/1218

    Abstract: A method of determining a concentration of a gas in a sample and/or of the composition of a gas by means of a spectrometer includes measuring an absorption signal of the gas as a function of the wavelength. The wavelength substantially continuously runs through a wavelength range and is superimposed by a harmonic wavelength modulation, wherein the influence of the wavelength modulation on the absorption signal via the light source modulation properties and the detection properties of the spectrometer is dependent on the device properties of the respective spectrometer. The method includes converting the absorption signal into at least one first derivative signal; deriving a gas concentration measurement parameter from the first derivative signal; determining the concentration and/or composition of the gas from at least the gas concentration measurement parameter and from a calibration function compensating for influences of state variables of the gas and of the spectrometer properties.

    Abstract translation: 通过光谱仪测定样品和/或气体组成中的气体的浓度的方法包括测量作为波长的函数的气体的吸收信号。 波长基本上连续地穿过波长范围并通过谐波波长调制叠加，其中波长调制对吸收信号的影响经由光源调制性质和光谱仪的检测特性取决于器件的性质 各自的光谱仪。 该方法包括将吸收信号转换成至少一个一阶导数信号; 从一阶导数信号导出气体浓度测量参数; 从至少气体浓度测量参数和补偿气体的状态变量和光谱仪性质的影响的校准函数确定气体的浓度和/或组成。

    COLLISIONAL BROADENING COMPENSATION USING REAL OR NEAR-REAL TIME VALIDATION IN SPECTROSCOPIC ANALYZERS
    4.
    发明申请
    COLLISIONAL BROADENING COMPENSATION USING REAL OR NEAR-REAL TIME VALIDATION IN SPECTROSCOPIC ANALYZERS 有权
    在光谱分析仪中使用实时或近似实时时间验证的冲突广播补偿

    公开(公告)号：US20130250301A1

    公开(公告)日：2013-09-26

    申请号：US13428591

    申请日：2012-03-23

    Applicant: Alfred Feitisch ,  Xiang Liu ,  Hsu-Hung Huang ,  Wenhai Ji ,  Richard Cline

    Inventor： Alfred Feitisch ,  Xiang Liu ,  Hsu-Hung Huang ,  Wenhai Ji ,  Richard Cline

    IPC: G06F19/00 ,  G01J3/42

    CPC classification number: G01J3/0297 ,  G01J3/42 ,  G01N21/05 ,  G01N21/274 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/0314 ,  G01N2021/399 ,  G01N2201/1211 ,  G01N2201/1218 ,  G01N2201/127

    Abstract: Validation verification data quantifying an intensity of light reaching a detector of a spectrometer from a light source of the spectrometer after the light passes through a validation gas across a known path length can be collected or received. The validation gas can include an amount of an analyte compound and an undisturbed background composition that is representative of a sample gas background composition of a sample gas to be analyzed using a spectrometer. The sample gas background composition can include one or more background components. The validation verification data can be compared with stored calibration data for the spectrometer to calculate a concentration adjustment factor, and sample measurement data collected with the spectrometer can be modified using this adjustment factor to compensate for collisional broadening of a spectral peak of the analyte compound by the background components. Related methods, articles of manufacture, systems, and the like are described.

    Abstract translation: 验证验证数据可以收集或接收在光通过已知路径长度的验证气体之后，量化从光谱仪的光源到达光谱仪的检测器的光强度。 验证气体可以包括一定量的分析物化合物和未受干扰的背景组合物，其代表使用光谱仪分析的样品气体的样品气体背景组成。 样品气体背景组合物可以包括一种或多种背景组分。 可以将验证验证数据与存储的光谱仪校准数据进行比较，以计算浓度调节因子，并且可以使用该调整因子修改用光谱仪收集的样品测量数据，以补偿分析物化合物的光谱峰的碰撞展宽 背景组件。 描述了相关方法，制品，系统等。

    Photoacoustic Gas Detector with Integrated Signal Processing
    5.
    发明申请
    Photoacoustic Gas Detector with Integrated Signal Processing 审中-公开
    具有集成信号处理的光声气体检测器

    公开(公告)号：US20120055232A1

    公开(公告)日：2012-03-08

    申请号：US12876501

    申请日：2010-09-07

    Applicant: Walter R. Thorson

    Inventor： Walter R. Thorson

    IPC: G01N21/17

    CPC classification number: G01N21/1702 ,  G01N2201/1211 ,  G01N2201/1214 ,  G01N2201/1218 ,  G01N2201/123

    Abstract: A flexible gas sensor includes a housing with a predetermined form factor, a photoacoustic gas sensing chamber, and at least one of acoustic, temperature, relative humidity or pressure sensors in combination with processing circuitry which can emulate the characteristic gas response output of a catalytic bead pellistor-type gas sensor in response to a selected gas. The processing circuitry can include a programmable processor and a storage unit. The storage unit can be loaded with data and executable instructions to specify, at least in part, how the signals from the photoacoustic sensor are to be processed by the processing circuitry.

    Abstract translation: 柔性气体传感器包括具有预定形状因数的壳体，光声气体检测室以及与处理电路组合的声学，温度，相对湿度或压力传感器中的至少一个，其可以模拟催化珠粒的特征气体响应输出 响应于所选气体的电阻型气体传感器。 处理电路可以包括可编程处理器和存储单元。 存储单元可以被加载数据和可执行指令，以至少部分地指定来自光声传感器的信号将如何由处理电路来处理。

    METHOD AND APPARATUS FOR DETERMINING GAS FLUX
    6.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING GAS FLUX 有权
    用于确定气体流量的方法和装置

    公开(公告)号：US20110270534A1

    公开(公告)日：2011-11-03

    申请号：US13085346

    申请日：2011-04-12

    Applicant: George Burba ,  Dayle McDermitt ,  Anatoly Komissarov ,  Tyler G. Anderson ,  Liukang Xu ,  Bradley A. Riensche

    Inventor： George Burba ,  Dayle McDermitt ,  Anatoly Komissarov ,  Tyler G. Anderson ,  Liukang Xu ,  Bradley A. Riensche

    IPC: G06F19/00

    CPC classification number: G01N21/3504 ,  G01N21/39 ,  G01N2201/1211 ,  G01N2201/1214 ,  G01N2201/1218

    Abstract: Disclosed embodiments of the present invention provide means to obtain correct gas density and flux measurements using (i) gas analyzer (open-path, or closed-path gas analyzers with short intake tube, for example 1 m long, or any combination of the two); (ii) fast temperature or sensible heat flux measurement device (such as, fine-wire thermocouple, sonic anemometer, or any other device providing fast accurate gas temperature measurements); (iii) fast air water content or latent heat flux measurement device (such as, hygrometer, NDIR analyzer, any other device providing fast accurate gas water content measurements); (iv) vertical wind or sampling device (such as sonic anemometer, scintillometer, or fast solenoid valve, etc.) and (v) algorithms in accordance with the present invention to compute the corrected gas flux, compensated for T-P effects. In case when water factor in T-P effects is negligible, the fast air water content or latent heat flux measurement device (item iii in last paragraph) can be excluded.

    Abstract translation: 本发明的公开的实施例提供了使用（i）气体分析仪（具有短进气管的开放路径或闭路气体分析器，例如1米长，或两者的任何组合）获得正确的气体密度和通量测量的方法 ）; （ii）快速温度或显热通量测量装置（例如细线热电偶，声波风速计或提供快速精确气体温度测量的任何其他装置）; （iii）快速空气含水量或潜热通量测量装置（如湿度计，NDIR分析仪，任何其他提供快速准确气体含水量测量的装置）; （iv）垂直风或取样装置（例如声波风速计，闪烁仪或快速电磁阀等）和（v）根据本发明的计算校正气体通量的算法，补偿T-P效应。 在T-P效应中的水分因子可忽略的情况下，可以排除快速空气含水量或潜热通量测量装置（最后一项中的项目iii）。

    Gas analyzers
    8.
    发明授权
    Gas analyzers 失效

    公开(公告)号：US4859859A

    公开(公告)日：1989-08-22

    申请号：US24769

    申请日：1987-03-11

    Applicant: Daniel W. Knodle ,  William E. Crone

    Inventor： Daniel W. Knodle ,  William E. Crone

    IPC: A61B5/083 ,  A61B5/097 ,  G01J1/02 ,  G01J1/18 ,  G01N21/31 ,  G01N21/35

    CPC classification number: G01J3/108 ,  A61B5/0836 ,  A61B5/097 ,  G01J3/02 ,  G01J3/0286 ,  G01N21/3504 ,  A61M16/04 ,  A61M2016/102 ,  G01J2001/182 ,  G01N2021/3166 ,  G01N2201/06186 ,  G01N2201/1218

    Abstract: Gas analyzers of the non-dispersive infrared radiation type which are designed to measure the concentration of one gas in a mixture of gases containing that gas. A novel, electrically modulated, stable, thick film infrared radiation emitter is employed to emit a beam of collimated, focused energy; and two electrically biased detectors are preferably used so that a ratioed, error eliminating output signal can be supplied to the failsafe, signal processing circuitry of the analyzer. The latter, and a conventional analog-to-digital convertor, supply information to a microcomputer which: (1) turns the infrared radiation emitter on and off; (2) controls a heater which keeps the infrared radiation detectors at a constant, precise temperature; and (3) controls displays of a variety of information concerning the gas being measured and the status of the gas analyzer. The microcomputer also accepts ambient temperature, barometric pressure, and other compensation factors. Typically, a disposable airway adapter will be included in the gas analyzer to confine the mixture of gases being analyzed to a path having a transverse dimension of precise and specific length and to provide an optical path across that stream of gases between the infrared radiation emitter and the infrared radiation detectors. The emitter and detectors are incorporated in a transducer head which can be detachably fixed to the airway adapter.

    Concentration measurement device
    10.
    发明授权
    Concentration measurement device 有权

    公开(公告)号：US11686671B2

    公开(公告)日：2023-06-27

    申请号：US17288300

    申请日：2019-10-18

    Applicant: FUJIKIN INCORPORATED

    Inventor： Masaaki Nagase ,  Hidekazu Ishii ,  Kouji Nishino ,  Nobukazu Ikeda

    IPC: G01N21/31 ,  G01N21/85 ,  G01N33/00 ,  H01L21/02

    CPC classification number: G01N21/31 ,  G01N21/85 ,  G01N33/0037 ,  G01N2201/1211 ,  G01N2201/1218 ,  H01L21/02274

    Abstract: A concentration measurement device 100 includes a light source 22 for generating incident light to a measurement space 10A, a photodetector 24 for receiving light emitted from the measurement space, and an arithmetic control circuit 26 for calculating a concentration of a measurement fluid on the basis of an output of the photodetector, and the light source includes a first light-emitting element 22a for generating light having a first wavelength, and a second light-emitting element 22b for generating light having a second wavelength, and the concentration measurement device is configured so as to calculate the concentration using either light of the first wavelength or the second wavelength on the basis of the pressure or temperature of the measurement fluid.

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