公开(公告)号：WO1989003029A1

公开(公告)日：1989-04-06

申请号：PCT/US1988003116

申请日：1988-09-09

Applicant: ANDROS ANALYZERS INCORPORATED

Inventor： ANDROS ANALYZERS INCORPORATED ,  McCLATCHIE, Edward, Alexander ,  WILLIAMS, Kevin, Graham

IPC: G01N21/61

CPC classification number: G01N21/3504 ,  G01N2021/3137 ,  G01N2021/3166 ,  G01N2201/1215

Abstract: A non-dispersive infrared gas analyzer is disclosed that accurately measures the concentration levels of a plurality of gases within a gas mixture. The analyzer includes first and second sample cells (11, 13) and is utilized advantageously for the measurement of NOx and hydrocarbon gas present in the exhaust of an automobile engine. The gas mixture of the exhaust is chilled before entering the first sample cell (11) to remove a substantial amount of the water vapor from that sample cell (13) to facilitate measurement of the NOx gas. The second sample cell receives the gas mixture in an unchilled state to allow for accurate measurement of the hydrocarbon gas. The analyzer includes processors (37, 39) which are utilized to further correct the NOx measurement and which also interact with each other to provide an output data stream that is representative of the concentration levels of the gases that are being analyzed.

公开(公告)号：WO2017017447A1

公开(公告)日：2017-02-02

申请号：PCT/GB2016/052300

申请日：2016-07-27

Applicant: GAS MEASUREMENT INSTRUMENTS LIMITED

Inventor： CRAWFORD, Massie ,  MATHIESON, Fraser ,  GLENDINNING, Andrew

IPC: G01N21/3504 ,  G01J1/16 ,  G01N21/31

CPC classification number: G01N21/3504 ,  G01J1/1626 ,  G01J2001/161 ,  G01N21/314 ,  G01N2021/3166 ,  G01N2201/1215

Abstract: A method of identifying the presence of a first gas such as methane within a sample, for example containing natural gas. A detector is provided having a sensor responsive to a first wavelength, a sensor responsive to a second wavelength, and a sensor for collecting reference readings. A gas sample is analysed to obtain a first absorption reading corresponding to the first wavelength, a second absorption reading corresponding to the second wavelength and a reference reading. A first absorption figure is calculated using the first absorption reading and the reference reading, and a second absorption figure using the second absorption reading and the reference reading. A lineariser function is applied to each of the first and second absorption figures to calculate first and second concentration figures. The sensor for each wavelength is calibrated for detecting the first gas such that the data collected at each wavelength gives the same reading when only said first gas is present in a sample. The ratio of the first concentration figure to the second concentration figure is then calculated, and the ratio used to identify whether only the first gas is present in the sample.

Abstract translation: 确定样品中第一气体（如甲烷）的存在，例如含有天然气的方法。 提供具有响应于第一波长的传感器，响应于第二波长的传感器和用于收集参考读数的传感器的检测器。 分析气体样品以获得对应于第一波长的第一吸收读数，对应于第二波长的第二吸收读数和参考读数。 使用第一吸收读数和参考读数计算第一吸收值，使用第二吸收读数和参考读数计算第二吸收值。 将线性化函数应用于第一和第二吸收图中的每一个以计算第一和第二浓度图。 校准每个波长的传感器用于检测第一气体，使得当在样品中仅存在所述第一气体时，在每个波长处收集的数据给出相同的读数。 然后计算第一浓度值与第二浓度值的比率，并且用于鉴定样品中是否仅存在第一气体的比率。

公开(公告)号：WO2013162914A1

公开(公告)日：2013-10-31

申请号：PCT/US2013/036294

申请日：2013-04-12

Applicant: HALLIBURTON ENERGY SERVICES, INC.

Inventor： FREESE, Robert ,  JONES, Christopher, Michael ,  PERKINS, David ,  SIMCOCK, Michael ,  SOLTMANN, William

IPC: G01N21/27

CPC classification number: G01N21/17 ,  G01K13/00 ,  G01N21/274 ,  G01N2201/1211 ,  G01N2201/1214 ,  G01N2201/1215 ,  G06E3/001

Abstract: The output of optical computing devices containing an integrated computational element (212) can be corrected when an interferent substance or condition is present. The devices may comprise an optional electromagnetic radiation source (200); a sample detection unit comprising an integrated computational element (212) and a detector (216) configured to receive electromagnetic radiation that has optically interacted with the integrated computational element and produce a sample signal associated therewith; an interferent monitor (222) located proximal to the sample detection unit, the interferent monitor being configured to produce an interferent signal associated with an interferent substance; and a signal processing unit (220) operable to convert the interferent signal into an interferent input form suitable for being computationally combined with the sample signal, the signal processing unit being further operable to computationally combine the sample signal and the interferent input form to determine a characteristic of a sample in real-time or near real-time.

Abstract translation: 当存在干扰物质或条件时，可以校正包含集成计算元件（212）的光学计算装置的输出。 所述装置可以包括可选的电磁辐射源（200）; 样本检测单元，包括集成计算元件（212）和检测器（216），其被配置为接收与所述集成的计算元件光学相互作用并产生与其相关联的采样信号的电磁辐射; 位于样本检测单元附近的干扰物监测器（222），所述干扰物监测器被配置为产生与干扰物质相关的干扰信号; 以及信号处理单元（220），其可操作以将所述干扰信号转换成适于与所述采样信号进行计算组合的干扰输入形式，所述信号处理单元还可操作以计算地组合所述采样信号和所述干扰输入形式，以确定 实时或接近实时的样本特征。

公开(公告)号：WO2008128114B1

公开(公告)日：2008-12-18

申请号：PCT/US2008060128

申请日：2008-04-11

Applicant: SPECTRASENSORS INC ,  ZHOU XIN ,  LIU XIANG ,  FEITISCH ALFRED ,  SANGER GREGORY M

Inventor： ZHOU XIN ,  LIU XIANG ,  FEITISCH ALFRED ,  SANGER GREGORY M

IPC: G01N21/35

CPC classification number: G01N21/3504 ,  G01N2021/3545 ,  G01N2021/399 ,  G01N2201/1215

Abstract: A differential absorption spectrum for a reactive gas in a gas mixture can be generated for sample absorption data by subtracting background absorption data set from the sample absorption data. The background absorption data can be characteristic of absorption characteristics of the background composition in a laser light scan range that includes a target wavelength. The differential absorption spectrum can be converted to a measured concentration of the reactive gas using calibration data. A determination can be made whether the background composition has substantially changed relative to the background absorption data, and new background absorption data can be used if the background composition has substantially changed. Related systems, apparatus, methods, and/or articles are also described..

Abstract translation: 通过从样品吸收数据中减去背景吸收数据，可以为样品吸收数据产生气体混合物中反应气体的差分吸收光谱。 背景吸收数据可以是包括目标波长的激光扫描范围中的背景组分的吸收特性的特征。 差分吸收光谱可以使用校准数据转换为测量的反应气体浓度。 可以确定背景组成是否相对于背景吸收数据有实质性改变，并且如果背景组成已经基本改变，则可以使用新的背景吸收数据。 还描述了相关的系统，设备，方法和/或物品。

公开(公告)号：WO2006047182A8

公开(公告)日：2006-12-14

申请号：PCT/US2005037606

申请日：2005-10-21

Applicant: OPTISCAN BIOMEDICAL CORP ,  HALL W DALE

Inventor： HALL W DALE

IPC: G06F19/00 ,  G01N33/50

CPC classification number: G01N21/274 ,  A61B5/14532 ,  A61B5/14535 ,  A61B5/14546 ,  A61B5/1459 ,  A61B5/1495 ,  A61B2560/0223 ,  A61M5/14212 ,  A61M2230/20 ,  G01N21/35 ,  G01N35/00693 ,  G01N35/00712 ,  G01N2201/1215 ,  G01N2201/127

Abstract: A method and apparatus are described that permit an analyte concentration to be estimated from a measurement in the presence of compounds that interfere with the measurement. The method reduces the error in the analyte concentration in the presence of interferents. The method includes the use of a set of measurements obtained for a large population having a range of know analyte and interfering compound concentrations. From a sample measurement, which may or may not be one of the population, likely present interferents are identified, and a calibration vector is calculated.

Abstract translation: 描述了允许在干扰测量的化合物存在下从测量估计分析物浓度的方法和装置。 该方法减少了在存在干扰物的情况下分析物浓度的误差。 该方法包括使用对具有一定范围的已知分析物和干扰化合物浓度的大群体获得的一组测量。 从可能或可能不是其中一个群体的样本测量中，可能存在干扰物被识别，并且计算校准向量。

公开(公告)号：US09546902B2

公开(公告)日：2017-01-17

申请号：US14662307

申请日：2015-03-19

Applicant: Servomex Group Limited

Inventor： Richard P. Kovacich ,  Bahram Alizadeh ,  Ian C. Gaskin ,  James D. Hobby ,  Martin Lopez

IPC: G01N21/00 ,  G01J3/02 ,  G01J3/10 ,  G01J3/433 ,  G01N21/39 ,  G01N21/27 ,  G01J3/42

CPC classification number: G01J3/027 ,  G01J3/0297 ,  G01J3/10 ,  G01J3/433 ,  G01J2003/423 ,  G01N21/274 ,  G01N21/39 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/121 ,  G01N2201/1215

Abstract: A method and system for correcting the effect of intensity fluctuations of the transmitted light in an absorption spectroscopy system used for the detection or measurement of chemical species in a medium, whereby one or more modulation bursts are imposed onto a light beam that passes through the medium. This burst signal may be obtained by modulating the bias current of a tunable diode laser, and the modulation burst signal may be optimally at the second harmonic of the modulation frequency of a wavelength modulated beam to allow usage of the same signal path processing used for the spectroscopic detection of the measurand for a second harmonic detection system. The burst signal can be controlled using a smooth window function to minimise the effects of non-linear perturbations that are inherent in tunable diode laser wavelength modulation spectroscopy systems, of optical interference fringes (etalons) and of the residual light absorption by background chemical species or the measurand at the wavelength coinciding with the modulation burst.

Abstract translation: 一种用于校正用于检测或测量介质中的化学物质的吸收光谱系统中的透射光的强度波动的影响的方法和系统，由此一个或多个调制脉冲串被施加到通过介质的光束 。 可以通过调制可调二极管激光器的偏置电流来获得该脉冲串信号，并且调制脉冲串信号可以在波长调制波束的调制频率的二次谐波处最佳地进行，以允许使用与 用于二次谐波检测系统的被测量的光谱检测。 可以使用平滑窗函数来控制突发信号，以最小化可调谐二极管激光波长调制光谱系统固有的非线性扰动，光学干涉条纹（标准具）和背景化学物质的残余光吸收的影响， 在波长上的被测量与调制脉冲串一致。

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。

公开(公告)号：US20110093215A1

公开(公告)日：2011-04-21

申请号：US12911666

申请日：2010-10-25

Applicant: Xin Zhou ,  Xiang Liu ,  Alfred Feitisch ,  Gregory M. Sanger

Inventor： Xin Zhou ,  Xiang Liu ,  Alfred Feitisch ,  Gregory M. Sanger

IPC: G06F19/00 ,  G01N21/25

CPC classification number: G01N21/3504 ,  G01N2021/3545 ,  G01N2021/399 ,  G01N2201/1215

Abstract: A differential absorption spectrum for a reactive gas in a gas mixture can be generated for sample absorption data by subtracting background absorption data set from the sample absorption data. The background absorption data can be characteristic of absorption characteristics of the background composition in a laser light scan range that includes a target wavelength. The differential absorption spectrum can be converted to a measured concentration of the reactive gas using calibration data. A determination can be made whether the background composition has substantially changed relative to the background absorption data, and new background absorption data can be used if the background composition has substantially changed. Related systems, apparatus, methods, and/or articles are also described.

Abstract translation: 可以通过从样品吸收数据中减去设置的背景吸收数据，为样品吸收数据产生气体混合物中的反应气体的差分吸收光谱。 背景吸收数据可以是包括目标波长的激光扫描范围中背景组合物的吸收特性的特征。 使用校准数据可以将差示吸收光谱转换为测量的反应气体浓度。 可以确定背景组合物是否相对于背景吸收数据基本上改变，并且如果背景组合物已经基本上改变，则可以使用新的背景吸收数据。 还描述了相关系统，装置，方法和/或制品。

公开(公告)号：US20100221762A1

公开(公告)日：2010-09-02

申请号：US12573821

申请日：2009-10-05

Applicant: Bernhard B. Sterling ,  W. Dale Hall ,  Kenneth G. Witte ,  Mark Wechsler ,  Peng Zheng ,  Richard Keenan

Inventor： Bernhard B. Sterling ,  W. Dale Hall ,  Kenneth G. Witte ,  Mark Wechsler ,  Peng Zheng ,  Richard Keenan

IPC: C12Q1/58 ,  G06F19/00 ,  C12Q1/54 ,  C12Q1/02 ,  C12Q1/24

CPC classification number: G01N21/274 ,  A61B5/14532 ,  A61B5/14535 ,  A61B5/14546 ,  A61B5/1459 ,  A61B5/1495 ,  A61B2560/0223 ,  A61M5/14212 ,  A61M2230/20 ,  G01N21/35 ,  G01N35/00693 ,  G01N35/00712 ,  G01N2201/1215 ,  G01N2201/127

Abstract: A method and apparatus are described that permit an analyte concentration to be estimated from a measurement in the presence of compounds that interfere with the measurement. The method reduces the error in the analyte concentration in the presence of interferents. The method includes the use of a set of measurements obtained for a large population having a range of known analyte and interfering compound concentrations. From a sample measurement, which may or may not be one of the population, likely present interferents are identified, and a calibration vector is calculated.

Abstract translation: 描述了允许在干扰测量的化合物存在下从测量估计分析物浓度的方法和装置。 该方法减少了在存在干扰物的情况下分析物浓度的误差。 该方法包括使用对具有已知分析物范围和干扰化合物浓度的大群体获得的一组测量。 从可能或可能不是其中一个群体的样本测量中，可能存在干扰物被识别，并且计算校准向量。

公开(公告)号：US07586094B2

公开(公告)日：2009-09-08

申请号：US11929525

申请日：2007-10-30

Applicant: Xiang Liu ,  Xin Zhou ,  Alfred Feitisch ,  Gregory M. Sanger

Inventor： Xiang Liu ,  Xin Zhou ,  Alfred Feitisch ,  Gregory M. Sanger

IPC: G01J5/02

CPC classification number: G01N21/3504 ,  G01N21/274 ,  G01N21/314 ,  G01N21/39 ,  G01N2201/1215

Abstract: Concentrations of a target analyte in a gas mixture containing one or more background analytes having potentially interfering spectral absorption features can be calculated by compensating for background analyte absorption at a target wavelength used to quantify the target analyte. Absorption can be measured at a reference wavelength chosen to quantify the concentration of the background analyte. Using a background gas adjustment factor or function, the absorption measured at the reference wavelength can be used to calculate absorption due to the background analyte at the target wavelength and thereby compensate for this background absorption to more accurately calculate the target analyte concentration in real or near real time. Additional background analytes can optionally be compensated for by using one or more additional reference wavelengths.

Abstract translation: 含有具有潜在干扰光谱吸收特征的一种或多种背景分析物的气体混合物中的目标分析物的浓度可以通过补偿用于量化目标分析物的目标波长的背景分析物吸收来计算。 可以在选择的参考波长处测量吸光度，以量化背景分析物的浓度。 使用背景气体调节因子或功能，可以使用在参考波长处测量的吸收来计算由于目标波长的背景分析物引起的吸收，从而补偿该背景吸收，以更精确地计算实际或近似的目标分析物浓度 即时的。 可以通过使用一个或多个另外的参考波长来可选地补偿附加的背景分析物。