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。

公开(公告)号：EP2630470B1

公开(公告)日：2017-03-29

申请号：EP11791077.8

申请日：2011-10-21

Applicant: SpectraSensors, Inc.

Inventor： LIU, Xiang ,  LEWISON, John ,  JI, Wenhai ,  FEITISCH, Alfred

IPC: G01N21/35 ,  G01N21/61 ,  G01N21/31 ,  G01N21/39 ,  G01N21/03 ,  G01N21/3504 ,  G01N21/27 ,  G01N21/3518 ,  G01J3/28 ,  G01J3/42

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

公开(公告)号：EP2630470A1

公开(公告)日：2013-08-28

申请号：EP11791077.8

申请日：2011-10-21

Applicant: SpectraSensors, Inc.

Inventor： LIU, Xiang ,  LEWISON, John ,  JI, Wenhai ,  FEITISCH, Alfred

IPC: G01N21/35 ,  G01N21/61 ,  G01N21/31 ,  G01N21/39

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

Abstract: A reference harmonic absorption curve of a laser absorption spectrometer, which can include a tunable or scannable laser light source and a detector, can have a reference curve shape and can include a first, second, or higher order harmonic signal of a reference signal generated by the detector in response to light passing from the laser light source through a reference gas or gas mixture. The reference gas or gas mixture can include one or more of a target analyte and a background gas expected to be present during analysis of the target analyte. The reference harmonic absorption curve can have been determined for the laser absorption spectrometer in a known or calibrated state. A test harmonic absorption curve having a test curve shape is compared with the reference harmonic absorption curve to detect a difference between the test curve shape and the reference curve shape that exceeds a predefined allowed deviation and therefore indicates a change in an output of the laser light source relative to the known or calibrated state. One or more operating and/or analytical parameters of the laser absorption spectrometer are adjusted to correct the test curve shape to reduce the difference between the test curve shape and the reference curve shape.

公开(公告)号：EP2630469A1

公开(公告)日：2013-08-28

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

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

Abstract: A valid state of an analytical system that includes a light source and a detector can be verified by determining that deviation of first light intensity data quantifying a first intensity of light received at the detector from the light source after the light has passed at least once through each of a reference gas in a validation cell and a zero gas from a stored data set does not exceed a pre-defined threshold deviation. The stored data set can represent at least one previous measurement collected during a previous instrument validation process performed on the analytical system. The reference gas can include a known amount of an analyte. A concentration of the analyte in a sample gas can be determined by correcting second light intensity data quantifying a second intensity of the light received at the detector after the light passes at least once through each of the reference gas in the validation cell and a sample gas containing an unknown concentration of the analyte compound. Related systems, methods, and articles of manufacture are also described.

Abstract translation: 包括光源和检测器的分析系统的有效状态可以通过确定在光已经通过至少一次通过之后量化在检测器处接收的第一光强度的光的第一光强数据的偏差与光源 验证单元中的参考气体和来自存储的数据组的零气体中的每一个不超过预定义的阈值偏差。 存储的数据集可以表示在分析系统上执行的先前的仪器验证过程期间收集的至少一个以前的测量。 参考气体可以包括已知量的分析物。 样品气体中分析物的浓度可以通过校正第二光强度数据来确定，该第二光强度数据在光通过至少一次通过验证单元中的每个参考气体之后，量化在检测器处接收的光的第二强度，并且样品气体 含有未知浓度的分析物。 还描述了相关系统，方法和制品。