公开(公告)号：US09816860B2

公开(公告)日：2017-11-14

申请号：US14466819

申请日：2014-08-22

Applicant: SpectraSensors, Inc.

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

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/42 ,  G01N21/31

CPC classification number: G01J3/0205 ,  G01J3/0237 ,  G01J3/027 ,  G01J3/0278 ,  G01J3/0291 ,  G01J3/42 ,  G01J2003/421 ,  G01N21/31 ,  G01N2201/06113 ,  G01N2201/062

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).

公开(公告)号：US09360415B2

公开(公告)日：2016-06-07

申请号：US14263942

申请日：2014-04-28

Applicant: SpectraSensors, Inc.

Inventor： Xiang Liu ,  John Lewison ,  Wenhai Ji ,  Alfred Feitisch

IPC: G01N21/00 ,  G01N21/27 ,  G01N21/39 ,  G01N21/3504 ,  G01J3/28 ,  G01J3/42 ,  G01N21/03 ,  G01N21/31 ,  G01N21/3518

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

Abstract: A reference harmonic absorption curve of a laser absorption spectrometer can have a reference curve shape derived from 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. 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. 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.

Abstract translation: 激光吸收光谱仪的参考谐波吸收曲线可以具有根据由检测器响应于从激光源通过参考气体或气体混合物的光而产生的参考信号导出的参考曲线形状。 参考气体或气体混合物可以包括目标分析物和预期在目标分析物的分析期间存在的背景气体中的一种或多种。 将具有测试曲线形状的测试谐波吸收曲线与参考谐波吸收曲线进行比较，以检测测试曲线形状与参考曲线形状之间的差异。 调整激光吸收光谱仪的操作和/或分析参数以校正测试曲线形状，以减小测试曲线形状与参考曲线形状之间的差异。

公开(公告)号：US20140253922A1

公开(公告)日：2014-09-11

申请号：US14263942

申请日：2014-04-28

Applicant: SpectraSensors, Inc.

Inventor： Xiang Liu ,  John Lewison ,  Wenhai Ji ,  Alfred Feitisch

IPC: G01N21/27 ,  G01N21/39

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

Abstract: A reference harmonic absorption curve of a laser absorption spectrometer can have a reference curve shape derived from 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. 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. 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.

Abstract translation: 激光吸收光谱仪的参考谐波吸收曲线可以具有根据由检测器响应于从激光源通过参考气体或气体混合物的光而产生的参考信号导出的参考曲线形状。 参考气体或气体混合物可以包括目标分析物和预期在目标分析物的分析期间存在的背景气体中的一种或多种。 将具有测试曲线形状的测试谐波吸收曲线与参考谐波吸收曲线进行比较，以检测测试曲线形状与参考曲线形状之间的差异。 调整激光吸收光谱仪的操作和/或分析参数以校正测试曲线形状，以减小测试曲线形状与参考曲线形状之间的差异。

公开(公告)号：US10072980B2

公开(公告)日：2018-09-11

申请号：US15376541

申请日：2016-12-12

Applicant: SpectraSensors, Inc.

Inventor： Alfred Feitisch ,  Xiang Liu ,  Chih-Husan Chang ,  Hsu-Hung Huang

IPC: G01J3/46 ,  G01J3/02 ,  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.

公开(公告)号：US09518866B2

公开(公告)日：2016-12-13

申请号：US14466839

申请日：2014-08-22

Applicant: SpectraSensors, Inc.

Inventor： Alfred Feitisch ,  Xiang Liu ,  Chih-Husan Chang ,  Hsu-Hung Huang

IPC: G01J3/46 ,  G01J3/02 ,  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为将至少一个光束发射到吸收介质的样品体积中。 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和所述至少一个光源之间，以选择性地改变以下中的至少一个：（i）由所述至少一个光源发射的光束的形状的功率强度或（ii） 由所述至少一个检测器检测的至少一个光源。 控制电路耦合到光束修改元件。 描述了相关的装置方法，制品，系统等。

公开(公告)号：US20160327479A1

公开(公告)日：2016-11-10

申请号：US14703616

申请日：2015-05-04

Applicant: SpectraSensors, Inc.

Inventor： Alfred Feitisch ,  Peter Dorn ,  James Tedesco ,  Xiang Liu

IPC: G01N21/39 ,  G01J3/02

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.

Abstract translation: 光谱仪包括被配置为沿着光束路径发射通过包含分析物的样品体积的光束的光源。 还包括至少一个检测器，其被定位成检测由光源发射的光束的至少一部分，以及沿光束路径定位的至少一个反射器，其位于光源之间，并且至少一个检测器具有大于 预定义的水平，例如20？RMS。

公开(公告)号：US20160132617A1

公开(公告)日：2016-05-12

申请号：US14538699

申请日：2014-11-11

Applicant: SpectraSensors, Inc.

Inventor： Xiang Liu ,  Alfred Feitisch ,  Keith Benjamin Helbley ,  James Tedesco

IPC: G06F17/50 ,  G06F17/10 ,  G01N21/3504 ,  G01N21/65 ,  G01N21/39

CPC classification number: G06F17/5009 ,  G01J1/0433 ,  G01J3/0294 ,  G01J3/28 ,  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: 可以使用代表样品气体的实际背景组成的背景组合物浓度数据来模拟对于气体样品获得的吸收光谱测量数据，并且基于该样品气体的吸收光谱数据（例如，用于结构干扰和碰撞展宽）进行分析 造型。

公开(公告)号：US20160054178A1

公开(公告)日：2016-02-25

申请号：US14466839

申请日：2014-08-22

Applicant: SpectraSensors, Inc.

Inventor： Alfred Feitisch ,  Xiang Liu ,  Chih-Husan Chang ,  Hsu-Hung Huang

IPC: G01J3/02

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为将至少一个光束发射到吸收介质的样品体积中。 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和所述至少一个光源之间，以选择性地改变以下中的至少一个：（i）由所述至少一个光源发射的光束的形状的功率强度或（ii） 由所述至少一个检测器检测的至少一个光源。 控制电路耦合到光束修改元件。 描述了相关的装置方法，制品，系统等。

公开(公告)号：US20160011047A1

公开(公告)日：2016-01-14

申请号：US14634364

申请日：2015-02-27

Applicant: Spectrasensors, Inc.

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

IPC: G01J3/02 ,  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.