公开(公告)号：US09671333B2

公开(公告)日：2017-06-06

申请号：US14718400

申请日：2015-05-21

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Takaaki Hirata ,  Yasuhiko Mitsumoto ,  Masaya Ooyama ,  Nobuhiko Kanbara ,  Naoyuki Fujimura ,  Minoru Maeda ,  Tadashi Sugiyama ,  Alan Cowie ,  Jie Zhu

IPC: G01N21/00 ,  G01N21/39 ,  G01N21/3504 ,  G01N21/359 ,  G01N33/00 ,  G01N21/31

CPC classification number: G01N21/39 ,  G01N21/3103 ,  G01N21/3504 ,  G01N21/359 ,  G01N33/0027 ,  G01N2021/399 ,  G01N2201/0612

Abstract: A laser gas analyzer includes a wavelength-variable laser having a wide wavelength-variable width, a light-split module configured to split an output light of the wavelength-variable laser into a measurement light and a reference light, a first gas cell into which gases to be measured are introduced, and the measurement light is made to be incident, and a data processor configured to obtain an absorption spectrum of each of the gases to be measured based on a reference signal related to the reference light and an absorption signal related to an output light of the first gas cell, and to obtain concentrations of the respective gases to be measured.

公开(公告)号：US20130135619A1

公开(公告)日：2013-05-30

申请号：US13687456

申请日：2012-11-28

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Takaaki Hirata ,  Yasuhiko Mitsumoto ,  Masaya Ooyama ,  Nobuhiko Kanbara ,  Naoyuki Fujimura ,  Minoru Maeda ,  Tadashi Sugiyama ,  Alan Cowie ,  Jie Zhu

IPC: G01N21/39

CPC classification number: G01N21/39 ,  G01N21/3103 ,  G01N21/3504 ,  G01N21/359 ,  G01N33/0027 ,  G01N2021/399 ,  G01N2201/0612

Abstract: A laser gas analyzer includes a wavelength-variable laser having a wide wavelength-variable width, a light-split module configured to split an output light of the wavelength-variable laser into a measurement light and a reference light, a first gas cell into which gases to be measured are introduced, and the measurement light is made to be incident, and a data processor configured to obtain an absorption spectrum of each of the gases to be measured based on a reference signal related to the reference light and an absorption signal related to an output light of the first gas cell, and to obtain concentrations of the respective gases to be measured.

公开(公告)号：US20150260646A1

公开(公告)日：2015-09-17

申请号：US14718400

申请日：2015-05-21

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Takaaki Hirata ,  Yasuhiko Mitsumoto ,  Masaya Ooyama ,  Nobuhiko Kanbara ,  Naoyuki Fujimura ,  Minoru Maeda ,  Tadashi Sugiyama ,  Alan Cowie ,  Jie Zhu

IPC: G01N21/3504 ,  G01N21/31 ,  G01N21/39

CPC classification number: G01N21/39 ,  G01N21/3103 ,  G01N21/3504 ,  G01N21/359 ,  G01N33/0027 ,  G01N2021/399 ,  G01N2201/0612

Abstract: A laser gas analyzer includes a wavelength-variable laser having a wide wavelength-variable width, a light-split module configured to split an output light of the wavelength-variable laser into a measurement light and a reference light, a first gas cell into which gases to be measured are introduced, and the measurement light is made to be incident, and a data processor configured to obtain an absorption spectrum of each of the gases to be measured based on a reference signal related to the reference light and an absorption signal related to an output light of the first gas cell, and to obtain concentrations of the respective gases to be measured.

公开(公告)号：US09347877B2

公开(公告)日：2016-05-24

申请号：US13687456

申请日：2012-11-28

Applicant: Yokogawa Electric Corporation

Inventor： Takaaki Hirata ,  Yasuhiko Mitsumoto ,  Masaya Ooyama ,  Nobuhiko Kanbara ,  Naoyuki Fujimura ,  Minoru Maeda ,  Tadashi Sugiyama ,  Alan Cowie ,  Jie Zhu

IPC: G01N21/39 ,  G01N21/3504 ,  G01N21/359

CPC classification number: G01N21/39 ,  G01N21/3103 ,  G01N21/3504 ,  G01N21/359 ,  G01N33/0027 ,  G01N2021/399 ,  G01N2201/0612

Abstract: A laser gas analyzer includes a wavelength-variable laser having a wide wavelength-variable width, a light-split module configured to split an output light of the wavelength-variable laser into a measurement light and a reference light, a first gas cell into which gases to be measured are introduced, and the measurement light is made to be incident, and a data processor configured to obtain an absorption spectrum of each of the gases to be measured based on a reference signal related to the reference light and an absorption signal related to an output light of the first gas cell, and to obtain concentrations of the respective gases to be measured.

Abstract translation: 一种激光气体分析仪，包括宽波长可变宽度的波长可变激光器，配置成将波长可变激光器的输出光分成测量光和参考光的光分离模块，第一气室 引入待测量的气体，并使测量光入射;以及数据处理器，被配置为基于与参考光相关的参考信号和相关的吸收信号来获得每个待测量的气体的吸收光谱 到第一气室的输出光，并且获得待测量的各个气体的浓度。

公开(公告)号：US20150185144A1

公开(公告)日：2015-07-02

申请号：US14643628

申请日：2015-03-10

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Takaaki Hirata ,  Yasuhiko Mitsumoto ,  Masaya Ooyama ,  Nobuhiko Kanbara ,  Naoyuki Fujimura ,  Minoru Maeda ,  Tadashi Sugiyama ,  Alan Cowie ,  Jie Zhu

IPC: G01N21/39 ,  G01N21/359 ,  G01N33/00 ,  G01N21/3504

CPC classification number: G01N21/39 ,  G01N21/3103 ,  G01N21/3504 ,  G01N21/359 ,  G01N33/0027 ,  G01N2021/399 ,  G01N2201/0612

Abstract: A laser gas analyzer includes a wavelength-variable laser having a wide wavelength-variable width, a light-split module configured to split an output light of the wavelength-variable laser into a measurement light and a reference light, a first gas cell into which gases to be measured are introduced, and the measurement light is made to be incident, and a data processor configured to obtain an absorption spectrum of each of the gases to be measured based on a reference signal related to the reference light and an absorption signal related to an output light of the first gas cell, and to obtain concentrations of the respective gases to be measured.

Abstract translation: 一种激光气体分析仪，包括宽波长可变宽度的波长可变激光器，配置成将波长可变激光器的输出光分成测量光和参考光的光分离模块，第一气室 引入待测量的气体，并使测量光入射;以及数据处理器，被配置为基于与参考光相关的参考信号和相关的吸收信号来获得每个待测量的气体的吸收光谱 到第一气室的输出光，并且获得待测量的各个气体的浓度。

公开(公告)号：US11650155B2

公开(公告)日：2023-05-16

申请号：US17390074

申请日：2021-07-30

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Yuta Suzuki ,  Yuma Kitagawa ,  Toshiyuki Saruya ,  Nobuhiko Kanbara

IPC: G01N21/61

CPC classification number: G01N21/61 ,  G01N2201/068 ,  G01N2201/0612 ,  G01N2201/121

Abstract: A gas analysis system, includes: a light-emitting element that emits a laser light modulated by a predetermined modulation frequency; and a light-receiving element that: receives the laser light that has passed through a measurement target gas; and upon receiving the laser light, outputs a received signal having an N-frequency that is n times the predetermined modulation frequency, wherein n is an integer no less than 2; and a signal processing device that: calculates a third component by removing, from a first component having the N-frequency, a second component, wherein the second component is a component of optical interference noise arising on an optical path of the laser light from the light-emitting element to the light-receiving element and has the same frequency as the first component; and calculates, based on a magnitude of the third component, a concentration of the measurement target gas.

公开(公告)号：US20220034807A1

公开(公告)日：2022-02-03

申请号：US17390074

申请日：2021-07-30

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Yuta Suzuki ,  Yuma Kitagawa ,  Toshiyuki Saruya ,  Nobuhiko Kanbara

IPC: G01N21/61

Abstract: A gas analysis system, includes: a light-emitting element that emits a laser light modulated by a predetermined modulation frequency; and a light-receiving element that: receives the laser light that has passed through a measurement target gas; and upon receiving the laser light, outputs a received signal having an N-frequency that is n times the predetermined modulation frequency, wherein n is an integer no less than 2; and a signal processing device that: calculates a third component by removing, from a first component having the N-frequency, a second component, wherein the second component is a component of optical interference noise arising on an optical path of the laser light from the light-emitting element to the light-receiving element and has the same frequency as the first component; and calculates, based on a magnitude of the third component, a concentration of the measurement target gas.