公开(公告)号：EP2147293A1

公开(公告)日：2010-01-27

申请号：EP08755505.8

申请日：2008-05-15

Applicant: SpectraSensors, Inc.

Inventor： CLINE, Richard, L. ,  LIU, Xiang ,  SANGER, Gregory, M. ,  SMITH, Charles, E. ,  ZHOU, Xin

IPC: G01N21/35 ,  G01N21/39

CPC classification number: G01N21/3504 ,  G01J3/02 ,  G01J3/027 ,  G01J3/4338 ,  G01N21/39 ,  G01N21/85 ,  G01N29/024 ,  G01N33/225 ,  G01N2021/399 ,  G01N2021/8578 ,  G01N2291/02809 ,  G01N2291/02836 ,  G01N2291/02881

Abstract: Thermodynamic properties of a natural gas stream can be determined in real time utilizing modeling algorithms in conjunction with one or more sensors for quantifying physical and chemical properties of the natural gas. Related techniques, apparatus, systems, and articles are also described. A method and apparatus for determining the energy content of a gas stream in which spectroscopic measurements on carbon dioxide and hydrocarbons as well as a third measurement of temperature, pressure and sund velocity of the gas are input to a processor which uses an algorithm to calculate the energy contact.

公开(公告)号：EP2630469B1

公开(公告)日：2019-05-08

申请号：EP11711169.0

申请日：2011-02-15

Applicant: SpectraSensors, Inc.

Inventor： FEITISCH, Alfred ,  KELLER, Lutz ,  LIU, Xiang ,  SCHREMPEL, Mathias ,  HELBLEY, Keith, Benjamin

IPC: G01N21/35 ,  G01N21/61 ,  G01N21/3504 ,  G01N21/27 ,  G01N21/31

公开(公告)号：EP2122328B1

公开(公告)日：2018-06-27

申请号：EP08732189.9

申请日：2008-03-14

Applicant: SpectraSensors, Inc.

Inventor： LIU, Xiang ,  ZHOU, Xin ,  FEITISCH, Alfred ,  SANGER, Gregory, M.

IPC: G01N21/3504 ,  G01N21/39 ,  G01J3/433

CPC classification number: G01N21/39 ,  G01J3/433 ,  G01N21/3504 ,  G01N2021/3513 ,  G01N2021/354 ,  G01N2021/399 ,  G01N2201/1218

Abstract: A system includes a light source, a detector, at least one pressure sensor, and a control unit. The light source emits light at a wavelength substantially corresponding to an absorption line of a target gas. The detector is positioned to detect the intensity of light emitted from the light source that has passed through the target gas. The pressure sensor detects the pressure of the target gas. The control circuit is coupled to the detector and the light source to adjust the modulation amplitude of the light source based on the pressure detected by the at least one pressure sensor. Related systems, apparatus, methods, and/or articles are also described.

公开(公告)号：EP3332231A1

公开(公告)日：2018-06-13

申请号：EP16751743.2

申请日：2016-08-03

Applicant: SpectraSensors, Inc.

Inventor： LIU, Xiang ,  YEH, Gary ,  CHAIMOWTIZ, Adam, S. ,  JENKO, William ,  FEITISCH, Alfred

IPC: G01J3/28 ,  G01N21/27

CPC classification number: G01J3/28 ,  G01J2003/283 ,  G01J2003/2866 ,  G01N21/274 ,  G01N21/39

Abstract: A frequency registration deviation is quantified for a field spectrum collected during analysis by a spectroscopic analysis system of a sample fluid when the spectroscopic analysis system has deviated from a standard calibration state. The field spectrum is corrected based on the frequency registration deviation using at least one spectral shift technique, and a concentration is calculated for at least one analyte represented by the field spectrum using the corrected field spectrum. Related systems, methods, and articles are described.

公开(公告)号：EP3292393A1

公开(公告)日：2018-03-14

申请号：EP16722505.1

申请日：2016-05-04

Applicant: SpectraSensors, Inc.

Inventor： FEITISCH, Alfred ,  DORN, Peter ,  TEDESCO, James ,  LIU, Xiang

IPC: G01N21/03 ,  G01J3/42 ,  G01N21/39 ,  G01N21/3504

CPC classification number: G01N21/39 ,  G01J3/0208 ,  G01N21/031 ,  G01N21/3504 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/0633

Abstract: A spectrometer includes a light source configured to emit a beam along a beam path through a sample volume comprising an analyte. Also included is at least one detector positioned to detect at least a portion of the beam emitted by the light source, and at least one reflector positioned along the beam path intermediate the light source and the at least one detector having a surface roughness greater than a predefined level such as 20 Å RMS.

公开(公告)号：EP3183548A1

公开(公告)日：2017-06-28

申请号：EP15744777.2

申请日：2015-07-09

Applicant: SpectraSensors, Inc.

Inventor： FEITISCH, Alfred ,  LIU, Xiang ,  CHANG, Chih-Husan ,  HUANG, Hsu-Hung

IPC: G01J3/42

CPC classification number: G01J3/0291 ,  G01J3/027 ,  G01J3/42

Abstract: At least one light source is configured to emit at least one beam into a sample volume of an absorbing medium. In addition, at least one detector is positioned to detect at least a portion of the beam emitted by the at least one light source. Further, at least one beam modification element is positioned between the at least one detector and the at least one light source to selectively change at least one of (i) a power intensity of, or (ii) a shape of the beam emitted by the at least one light source as detected by the at least one detector. A control circuit is coupled to the beam modification element. Related apparatus methods, articles of manufacture, systems, and the like are described.

Abstract translation: 至少一个光源被配置成将至少一个光束发射到吸收介质的样本体积中。 另外，至少一个检测器被定位成检测由至少一个光源发射的光束的至少一部分。 此外，至少一个光束修改元件位于所述至少一个检测器与所述至少一个光源之间，以选择性地改变（i）所述光束的功率强度或（ii）由所述光源发射的光束的形状中的至少一个。 由至少一个检测器检测到的至少一个光源。 控制电路耦合到波束修改元件。 描述了相关的装置方法，制造的物品，系统等。

公开(公告)号：EP2828642A1

公开(公告)日：2015-01-28

申请号：EP13716562.7

申请日：2013-03-21

Applicant: SpectraSensors, Inc.

Inventor： FEITISCH, Alfred ,  LIU, Xiang ,  HUANG, Hsu-hung ,  JI, Wenhai ,  CLINE, Richard, L.

IPC: G01N21/35

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.

公开(公告)号：EP2440893A2

公开(公告)日：2012-04-18

申请号：EP10786945.5

申请日：2010-06-11

Applicant: SpectraSensors, Inc.

Inventor： LIU, Xiang ,  FEITISCH, Alfred ,  ZHOU, Xin

IPC: G01J3/42 ,  G01N21/25

CPC classification number: G01N21/39 ,  G01J3/433 ,  G01J3/4338 ,  G01J2003/4332 ,  G01J2003/4334 ,  G01N21/031 ,  G01N21/05 ,  G01N21/274 ,  G01N21/3504 ,  G01N2021/354 ,  G01N2021/399

Abstract: Detector data representative of an intensity of light that impinges on a detector after being emitted from a light source and passing through a gas over a path length can be analyzed using a first analysis method to obtain a first calculation of an analyte concentration in the volume of gas and a second analysis method to obtain a second calculation of the analyte concentration. The second calculation can be promoted as the analyte concentration upon determining that the analyte concentration is out of a first target range for the first analysis method.

公开(公告)号：EP2126550A2

公开(公告)日：2009-12-02

申请号：EP08780378.9

申请日：2008-01-24

Applicant: SpectraSensors, Inc.

Inventor： LIU, Xiang ,  ZHOU, Xin ,  FEITISCH, Alfred ,  SANGER, Gregory, M.

IPC: G01N21/35 ,  G01N21/31 ,  G01N21/39

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。

公开(公告)号：EP3218695A1

公开(公告)日：2017-09-20

申请号：EP15797779.4

申请日：2015-11-11

Applicant: SpectraSensors, Inc.

Inventor： LIU, Xiang ,  FEITISCH, Alfred ,  HELBLEY, Keith,Benjamin ,  TEDESCO, James

IPC: G01N21/39 ,  G01N21/65 ,  G01N21/3504

CPC classification number: G06F17/5009 ,  G01J3/42 ,  G01J3/44 ,  G01N21/3504 ,  G01N21/39 ,  G01N21/65 ,  G01N2021/3545 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/129 ,  G06F17/10

Abstract: Background composition concentration data representative of an actual background composition of a sample gas can be used to model absorption spectroscopy measurement data obtained for a gas sample and to correct an analysis of the absorption spectroscopy data (e.g. for structural interference and collisional broadening) based on the modeling.

Abstract translation: 表示样品气体的实际背景组成的背景组分浓度数据可以用于模拟针对气体样品获得的吸收光谱测量数据，并且基于该吸收光谱数据的分析（例如，用于结构干涉和碰撞展宽）来校正吸收光谱数据的分析 造型。