公开(公告)号：US10401226B2

公开(公告)日：2019-09-03

申请号：US15828512

申请日：2017-12-01

Applicant: SICK AG

Inventor： Julian Edler ,  Thomas Beyer ,  Samson Frank

IPC: G01N21/25 ,  G01J3/51 ,  G02B27/10 ,  G01J3/18 ,  G01J3/10 ,  G01J3/42 ,  G01N21/27 ,  G01N21/39 ,  G01J3/02 ,  H01S3/13

Abstract: A method of securing a modulation range of a wavelength-variable radiation source as part of the measurement of an absorption line of a substance comprises: the radiation source being controlled to transmit radiation such that the wavelength of the radiation runs through the modulation range in accordance with a time pattern; the radiation being filtered by means of a filter in whose pass band the absorption line is disposed and which has at least one filter flank whose actual wavelength is within the modulation range; a spectrum of the filtered radiation being determined in that the intensity of the filtered radiation is detected with respect to the time pattern; and a determination being made whether the spectrum has the at least one filter flank.

公开(公告)号：US09074930B2

公开(公告)日：2015-07-07

申请号：US14220313

申请日：2014-03-20

Applicant: SICK AG

Inventor： Jurgen Kaufmann ,  Thomas Beyer ,  Julian Edler

IPC: G01J3/10 ,  G01J1/42 ,  G01J3/42 ,  G01J3/02

CPC classification number: G01J3/108 ,  G01J1/4257 ,  G01J3/0229 ,  G01J3/42

Abstract: A spectrometer has a first and second light sources (12, 14) which generate light radiation (24) in a first and second wavelength ranges, and a mirror unit (16) for deflecting the light radiation (24, 26) into a measurement path (18), arranged so that the radiation of both wavelength ranges (24, 26) runs through on the same optical path. A detector (20) detects radiation (24, 26) running through the measurement path (18) and an evaluation unit (22) evaluates the radiation (24, 26) incident at the detector (20) and for determining a concentration of a measurement gas component present in the measurement path (18). The mirror unit (16) is configured as a micromirror array (32) and that a single micromirror (34) only deflects a portion of the radiation (24, 26).

Abstract translation: 光谱仪具有在第一和第二波长范围内产生光辐射（24）的第一和第二光源（12,14）和用于将光辐射（24,26）偏转成测量路径的反射镜单元（16） （18），布置成使得两个波长范围（24,26）的辐射在相同的光路上延伸。 检测器（20）检测穿过测量路径（18）的辐射（24,26），并且评估单元（22）评估入射在检测器（20）处的辐射（24,26），并且用于确定测量的浓度 存在于测量路径（18）中的气体成分。 镜单元（16）被配置为微镜阵列（32），并且单个微反射镜（34）仅偏转一部分辐射（24,26）。

公开(公告)号：US10119906B2

公开(公告)日：2018-11-06

申请号：US15192120

申请日：2016-06-24

Applicant: SICK AG

Inventor： Thomas Beyer ,  Julian Edler

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

Abstract: The invention relates to a method of determining the concentration of a gas component comprising the steps: generating and guiding a light beam having a wavelength variable in a wavelength range through a measurement volume in which the gas component having an absorption in the wavelength range is present; tuning the wavelength range; detecting the intensity of the light beam after passage through the measurement volume; storage of measurement points during the tuning that respectively consist of a point in time and an associated intensity value, to obtain a direct absorption line; generating an artificial measurement curve from the stored measurement points by shifting the measurement points on the time axis; wherein the shift takes place so that an artificial modulation results in the wavelength time extent; and evaluating the artificial measurement curve in accordance with the method of the wavelength modulation spectroscopy and determining a first concentration value therefrom.

公开(公告)号：US09970867B2

公开(公告)日：2018-05-15

申请号：US15223726

申请日：2016-07-29

Applicant: SICK AG

Inventor： Thomas Beyer ,  Julian Edler

IPC: G01N21/39 ,  G01J3/10 ,  G01J3/433

CPC classification number: G01N21/39 ,  G01J3/10 ,  G01J3/433 ,  G01J2003/4332 ,  G01N2021/399 ,  G01N2201/12

Abstract: The invention relates to a method and to a spectrometer for determining the concentration of a gas component, wherein a light source of the spectrometer is operated as in wavelength modulation spectroscopy (WMS). Thus a determination of the concentration can also take place in accordance with WMS and the measured data can, however, additionally be processed, namely a sorting takes place on the time axis, such that the concentration can be determined using the methods of direct absorption spectroscopy (DAS).

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。