公开(公告)号：US09046481B2

公开(公告)日：2015-06-02

申请号：US14279369

申请日：2014-05-16

Applicant: Sick AG

Inventor： Julian Edler ,  Thomas Beyer ,  Rolf Disch

IPC: G01N21/00 ,  G01N21/17 ,  G01N21/31 ,  G01N21/39 ,  G01N21/3504 ,  G01J3/433 ,  G01N21/27 ,  G01N21/3554

CPC classification number: G01N21/39 ,  G01J3/433 ,  G01J3/4338 ,  G01N21/274 ,  G01N21/3504 ,  G01N21/3554 ,  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 the composition of a gas using a spectrometer comprises transmitting of radiation whose wavelength substantially continuously runs through a wavelength range, wherein the continuous running through of the wavelength range is overlaid by a wavelength modulation; measuring of an absorption signal as a function of the wavelength of the radiation; converting of the absorption signal into first and second derivative signals; deriving of a first and a second measured gas concentration value from the first and the second derivative signals, respectively; and determining of the concentration and/or the composition of the gas from at least the first measured gas concentration value, wherein the wavelength modulation is adapted in response to a change of a state variable of the gas such that a ratio between the first and the second measured gas concentration values is kept substantially constant.

Abstract translation: 使用光谱仪确定样品中的气体浓度和/或气体组成的方法包括传输其波长基本上连续穿过波长范围的辐射，其中波长范围的连续穿过被覆盖在 波长调制; 测量作为辐射波长的函数的吸收信号; 将吸收信号转换为第一和第二导数信号; 分别从第一和第二导数信号得出第一和第二测量气体浓度值; 以及从至少第一测量的气体浓度值确定气体的浓度和/或组成，其中响应于气体的状态变量的改变而适配波长调制，使得第一和第 第二测量气体浓度值保持基本恒定。

公开(公告)号：US09752931B2

公开(公告)日：2017-09-05

申请号：US14488608

申请日：2014-09-17

Applicant: SICK AG

Inventor： Torsten Waldmann ,  Rolf Disch

IPC: G01J3/02 ,  G01N33/00 ,  G01N21/3504 ,  G01J3/12 ,  G01J3/26 ,  G01J3/433

CPC classification number: G01J3/0205 ,  G01J3/0235 ,  G01J3/12 ,  G01J3/26 ,  G01J3/433 ,  G01J2003/1282 ,  G01N21/3504 ,  G01N33/0062

Abstract: A spectrometer (10) for gas analysis is provided, the spectrometer comprising a measurement cell (28) having a gas to be investigated, a light source (12) for the transmission of light (14) into the measurement cell (28) on a light path (16), a filter arrangement (22) having a Fabry-Perot filter (24a-c) in the light path (16), in order to set frequency properties of the light (14) by means of a transmission spectrum of the filter arrangement (22), as well as a detector (36, 38) which measures the absorption of the light (14) by the gas (30) in the measurement cell (28). In this connection the filter arrangement (22) has a plurality of Fabry-Perot filters (24a-c) arranged behind one another in the light path (14) and a control unit (44) for the filter arrangement (22) is provided in order to change the transmission spectrum by setting at least one of the Fabry-Perot filters (24a-c).

公开(公告)号：US09360417B2

公开(公告)日：2016-06-07

申请号：US14179050

申请日：2014-02-12

Applicant: SICK AG

Inventor： Rolf Disch

IPC: G01N21/3504 ,  G01N21/17

CPC classification number: G01N21/3504 ,  G01N21/1702 ,  G01N2021/1704

Abstract: A gas measurement device for measuring the concentration of a plurality of gas components by means of absorption measurement comprising a light source for infrared radiation (3) or a thermal radiator (4) as a light source (5), an optics (22) for bundling the light of the light source (5), a band pass filter (4) and a photoacoustic measurement cell (12) for measuring a plurality of gas concentrations, wherein a Fabry-Perot filter (6) is provided in front of the photoacoustic measurement cell (12) in addition to the band pass filter (4) for selecting the absorption spectra.

Abstract translation: 一种用于通过包括用于红外辐射的光源（3）或作为光源（5）的散热器（4）的吸收测量来测量多个气体成分的浓度的气体测量装置，用于 捆扎光源（5）的光，带通滤光器（4）和用于测量多个气体浓度的光声测量单元（12），其中在光声前面设置法布里 - 珀罗滤光器（6） 除了用于选择吸收光谱的带通滤波器（4）之外的测量单元（12）。

公开(公告)号：US09128037B2

公开(公告)日：2015-09-08

申请号：US14293473

申请日：2014-06-02

Applicant: SICK AG

Inventor： Rolf Disch ,  Florian Bruchig ,  Pascal Ortwein

IPC: G01N21/01 ,  G01N21/33 ,  G01N21/35 ,  G01J3/427 ,  G01N21/31 ,  G01N21/3504 ,  G01J3/08 ,  G01J3/10 ,  G01J3/42

CPC classification number: G01N21/3151 ,  G01J3/08 ,  G01J3/10 ,  G01J3/42 ,  G01J3/427 ,  G01N21/33 ,  G01N21/3504 ,  G01N2021/3155 ,  G01N2021/317 ,  G01N2021/3513

Abstract: The invention relates to a measurement apparatus for the determination of gas concentrations. The apparatus comprises two spectral channels, wherein the channels are separated by a single chopper wheel. The chopper wheel has several functions. On the transmitting side, it brings the light of the two light sources on the same measuring path, on the receiving side it associates the light to the associated receiver; it has its chopper function to use the lock-in technique; and it opens the possibility to implement an easy zero point correction.

Abstract translation: 本发明涉及一种用于确定气体浓度的测量装置。 该装置包括两个光谱通道，其中通道由单个切碎机轮分开。 斩波轮有几个功能。 在发射侧，它将两个光源的光引入相同的测量路径，在接收侧，它将光与相关的接收器相关联; 它具有切割功能，可以使用锁定技术; 并且打开了实现简单零点校正的可能性。

公开(公告)号：US20140361171A1

公开(公告)日：2014-12-11

申请号：US14293473

申请日：2014-06-02

Applicant: SICK AG

Inventor： Rolf Disch ,  Florian Bruchig ,  Pascal Ortwein

IPC: G01N21/31

CPC classification number: G01N21/3151 ,  G01J3/08 ,  G01J3/10 ,  G01J3/42 ,  G01J3/427 ,  G01N21/33 ,  G01N21/3504 ,  G01N2021/3155 ,  G01N2021/317 ,  G01N2021/3513

Abstract: The invention relates to a measurement apparatus for the determination of gas concentrations. The apparatus comprises two spectral channels, wherein the channels are separated by a single chopper wheel. The chopper wheel has several functions. On the transmitting side, it brings the light of the two light sources on the same measuring path, on the receiving side it associates the light to the associated receiver; it has its chopper function to use the lock-in technique; and it opens the possibillity to implement an easy zero point correction.

Abstract translation: 本发明涉及一种用于确定气体浓度的测量装置。 该装置包括两个光谱通道，其中通道由单个切碎机轮分开。 斩波轮有几个功能。 在发射侧，它将两个光源的光引入相同的测量路径，在接收侧，它将光与相关的接收器相关联; 它具有切割功能，可以使用锁定技术; 并打开可能性来实现简单的零点校正。