公开(公告)号：WO2015167961A1

公开(公告)日：2015-11-05

申请号：PCT/US2015/027574

申请日：2015-04-24

Applicant: SPECTRASENSORS, INC.

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

IPC: G01N21/3504 ,  G01J3/28 ,  G01J3/42 ,  G01N21/27 ,  G01N21/39 ,  G01J3/433 ,  G01N21/03 ,  G01N33/00

CPC classification number: G01N21/39 ,  G01J3/433 ,  G01J2003/2873 ,  G01N21/031 ,  G01N21/274 ,  G01N21/3504 ,  G01N2021/399 ,  G01N2201/127

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. One or more portions of a test harmonic absorption curve having a test curve shape is compared with one or more portions of the reference harmonic absorption curve arising due to absorption of the background gases and not by absorption of the target analyte. 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的一个或多个部分与由于背景气体的吸收而不是通过吸收目标分析物而产生的参考谐波吸收曲线的一个或多个部分进行比较。 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：WO2012054886A1

公开(公告)日：2012-04-26

申请号：PCT/US2011/057370

申请日：2011-10-21

Applicant: SPECTRASENSORS, INC. ,  LIU, Xiang ,  LEWISON, John ,  JI, Wenhai ,  FEITISCH, Alfred

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.

Abstract translation: 可以包括可调谐或可扫描的激光光源和检测器的激光吸收光谱仪的参考谐波吸收曲线可以具有参考曲线形状，并且可以包括由第一，第二或更高次谐波信号产生的参考信号 检测器响应于从激光源通过参考气体或气体混合物的光。 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。 参考谐波吸收曲线可以在已知或校准状态下为激光吸收光谱仪确定。 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，以检测超过预定义的允许偏差的测试曲线形状和参考曲线形状之间的差异，因此表示激光输出的变化 源相对于已知或校准状态。 调整激光吸收光谱仪的一个或多个操作和/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：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.