公开(公告)号：WO01027595A1

公开(公告)日：2001-04-19

申请号：PCT/DE2000/003572

申请日：2000-10-11

IPC: G01N21/3504 ,  G01N21/35

CPC classification number: G01N21/3504 ,  G01N33/22

Abstract: The invention relates to a method for determining the quality of a sample gas, especially a combustion gas, using a transmission spectrum of the sample gas which is determined by means of spectroscopic measuring procedures under operating conditions. In a measurement of state, at least the values corresponding to the pressure p and temperature T of the sample gas are determined and a spectral vector S is formed in a number of selected spectral areas by integrating values from the transmission spectrum of the sample gas, said spectral vector having as its components the values of the integrals through the selected spectral ranges and being characteristic of the composition of the sample gas in the operating mode. The spectral vector S is then scalarly multiplied with a factor vector V , said factor vector having been established through calibration measurements of spectral vectors S with calibration gases of known compositions and under known state conditions; in order to determine a physical variable to be determined in relationship to the gas quality. An appropriate factor vector V is used according to the physical variable to be determined in relationship to the gas quality and the state of the sample gas when the spectral vector S is being measured.

Abstract translation: 本发明涉及一种用于确定样品气体的气体质量，特别是燃料气体中，通过所述样本气体的分光测定方法透射光谱的装置，其中，在一个状态测量确定从一个特定的操作条件下开始至少压力p和样品气体的温度T，的相关值和 所述样本气体的透射光谱的光谱的值的积分若干所选光谱区域的<ö>取值形成，其具有作为构成要素的积分超过所选光谱区域的值，并且是用于样品气体在操作状态下的组合物的特性。 随后，为了确定一个乘以在气体的质量方面要确定的频谱<Ò>取值标量与因子矢量 V ，通过光谱的校准测量<ö>取值是已知的状态的条件，其中>相关联的因子矢量V被用于下已知组成的气体和校准气体确定的，根据相对于所述气体质量来确定物理尺寸和取决于样品气体的状态在频谱向量<ö>取值

公开(公告)号：WO2023037269A1

公开(公告)日：2023-03-16

申请号：PCT/IB2022/058430

申请日：2022-09-07

Applicant: ONPOINT TECHNOLOGIES, LLC

Inventor： MASTERSON, Bernard P. ,  SAPPEY, Andrew D.

IPC: G01N21/3504

Abstract: A spectrometer is described that is configured to gather an air mass, such as one proximate to a vehicle, a broadband light source configured to emit a probe beam through the air mass, a photodetector, and beam-steering optics that at least in part define a monitored optical path and direct the probe beam along the monitored optical path to the uncooled photodetector. Processing circuitry may determine a presence of or a relative concentration of volatile organic compounds (VOCs) in the air mass based on an output of the photodetector.

公开(公告)号：WO2023022864A1

公开(公告)日：2023-02-23

申请号：PCT/US2022/038483

申请日：2022-07-27

Applicant: ROSEMOUNT INC.

Inventor： BOUHBUT, Tsviel ,  BEN-ADERET, Yossi ,  GRIGOROVITCH, Dimitriy ,  SHEINTOP, Uzziel

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

Abstract: An open path gas detection system (200, 280) includes a transmitter (202, 202A) and a receiver (204). The transmitter (202, 202A) is configured to generate illumination (106) across an open path. The receiver (204) is positioned to detect the illumination (106) from the transmitter (202, 202A) after the illumination (106) has passed through the open path and detect a gas of interest based on the illumination (106). However, the laser can also be used for gas detection systems in other circumstances. The transmitter (202, 202A) and receiver (204) are configured to communicate wirelessly (120). A method (500) of operating an open path gas detection system (200, 280) is also provided.

公开(公告)号：WO2023275583A1

公开(公告)日：2023-01-05

申请号：PCT/IB2021/000866

申请日：2021-12-10

Applicant: KAYRROS

Inventor： OUERGHI, Elyes ,  EHRET, Thibaud ,  DE FRANCHIS, Carlo ,  FACCIOLO, Gabriele ,  LAUVAUX, Thomas ,  MOREL, Jean-Michel ,  GIRON, Clément

IPC: G01N21/35 ,  G01N21/3504 ,  G01J3/42 ,  G01M3/38 ,  G01N33/00 ,  G01N2021/3531 ,  G01N33/0036

Abstract: A method of detecting a plume of a given gas composition from a hyperspectral image comprises obtaining a short-wave infrared (SWIR) image depicting an area of interest on a given date from an overhead image acquisition device, determining, for a plurality of wavelengths for which a given gas exhibits an absorption maximum, whether at least one pixel of the SWIR image is indicative of absorption of infrared light within the given gas, applying an anomaly detection algorithm to the SWIR image to detect an anomaly therein that is attributable to a presence of the given gas within the area of interest, and identifying pixels as indicative of an emission of the given gas for those pixels of the SWIR image that are determined to be indicative of absorption of the given gas and determined to be indicative of the anomaly attributable to the presence of the given gas.

公开(公告)号：WO2022267964A1

公开(公告)日：2022-12-29

申请号：PCT/CN2022/099027

申请日：2022-06-15

Applicant: 张玉芝

Inventor： 张玉芝 ZHANG, Yuzhi

IPC: G01N21/3504 ,  G01N21/53 ,  G01N15/06 ,  G01N15/02 ,  G01N15/0205 ,  G01N15/0211 ,  G01N2015/0693

Abstract: 本发明涉及一种用于复合气体组分的快速检测方法，该方法包括：(a)以脉冲序列的形式，将多个波长的测量光脉冲依次射入测试气体气室；(b)在预定散射角度测量每种波长下的散射光强度，利用光散射法计算悬浮颗粒物颗粒度及相应浓度；(c)计算对于每种波长的参考散射系数，构建同质散射系数方程；(d)使用红外光谱法进行气体组分测量，得到红外光谱测量方程组；(e)将参考散射系数、同质散射系数方程、红外光谱测量方程组联立求解，确定散射项大小，将所确定的散射项代回红外光谱测量方程组，并基于该方程组确定各个气体组份浓度。本发明具有测量精度高，测量过程快速、悬浮颗粒物污染环境适应性强、测量设备依赖度低等优点。

公开(公告)号：WO2022267963A1

公开(公告)日：2022-12-29

申请号：PCT/CN2022/099026

申请日：2022-06-15

Applicant: 张玉芝

Inventor： 张玉芝 ZHANG, Yuzhi

IPC: G01N15/06 ,  G01N15/02 ,  G01N21/53 ,  G01N21/3504 ,  G01N15/0205 ,  G01N15/0211 ,  G01N2015/0693

Abstract: 一种用于复合气体的综合检测装置，包括多波长脉冲序列发生模块（1）、第一探测单元（2）、第二探测单元（3）、气室（4，5，6）以及信号处理模块，多波长脉冲序列发生模块（1）用于进行多波长脉冲序列发射，脉冲序列包括用于散射法测量的第一脉冲序列和用于红外光谱法测量的第二脉冲序列。采用脉冲序列的形式可以同时实现气体中颗粒物浓度以及气体组分的检测，并且检测装置巧妙、准确地消除了气体组分测量中散射的影响，具有结构简单、成本低、测量精度高的优点。

公开(公告)号：WO2022258937A1

公开(公告)日：2022-12-15

申请号：PCT/GB2022/050706

申请日：2022-03-21

Applicant: QLM TECHNOLOGY LIMITED

Inventor： AI, Xiao ,  TITCHENER, James

IPC: G01N21/17 ,  G01N21/39 ,  G01N21/3504 ,  G01J3/433

Abstract: A method of gas detection comprises emitting radiation of different wavelengths across the absorption spectrum of a gas towards a target area; and analysing the spectrum of returned laser light from the target area to identify the gas in the target area using the time correlation of the emitted radiation and the returning radiation. The radiation is modulated using respective orthogonal modulation codes for the different wavelengths and the modulation codes are modified by the insertion of a gap between each bit of the modulation code, the gap having a duration of at least n-1 bits where n is the number of different wavelengths.

公开(公告)号：WO2022250595A1

公开(公告)日：2022-12-01

申请号：PCT/SE2022/050488

申请日：2022-05-18

Applicant: SENSEAIR AB

Inventor： HÖK, Bertil ,  LJUNGBLAD, Jonas

IPC: G01N33/98 ,  B60K28/06 ,  G01N21/3504 ,  G01N33/497

Abstract: The present invention relates to a breath analyzing system and method. In particular the invention relates to a breath analyzing system and method for determining the validity of a measurement of a concentration of an intoxicating substance in the exhaled breath of a user and thereby reducing the risk for tampering with the results without increasing the analyzing time or inconvenience for the user. A line-of-sight detector is provided and its output signal compared with a tracer substance signal to determine if the signals have respective expected behavior and relation.

公开(公告)号：WO2022244388A1

公开(公告)日：2022-11-24

申请号：PCT/JP2022/009544

申请日：2022-03-04

Applicant: 古野電気株式会社

Inventor： 箕輪　昌裕

IPC: G01W1/00 ,  G01J1/42 ,  G01N21/3504

Abstract: マイクロ波放射計が大気中の水蒸気量を正確に測定することが困難な状況にあっても、マイクロ波放射計を用いた大気中の水蒸気量をより正確に測定できる気象観測装置、気象観測システム、および、気象観測方法を提供する。　気象観測装置（３０）は、気象レーダ装置（１０）で検出されたエコーデータを取得するエコーデータ取得部（３１）と、マイクロ波放射計（２０）で検出された水蒸気量を特定する水蒸気スペクトルデータを取得する水蒸気スペクトルデータ取得部（３２）と、前記水蒸気スペクトルデータを取得する領域を特定する領域特定部（３３）と、前記領域に存在するエコーデータを抽出するエコーデータ抽出部（３４）と、前記エコーデータ抽出部（３４）で抽出した前記エコーデータのエコー強度に基づいて、前記水蒸気スペクトルデータを補正するスペクトル補正部（３５）と、を備える。

公开(公告)号：WO2022194942A1

公开(公告)日：2022-09-22

申请号：PCT/EP2022/056842

申请日：2022-03-16

Applicant: MEDCLAIR AB

Inventor： SZABÓ, István ,  SUNDLING, Jerker ,  NYBERG, Tomas

IPC: G01N21/3504

Abstract: The present invention relates to a gas sensor (100) comprising a measurement chamber (102) for measuring presence of a first gas, the first gas being nitrous oxide (N2O) and an optical source (103) for emitting radiation in the measurement chamber (102). The sensor also comprises a radiation detector (104) sensitive to radiation emitted by the optical source (103), the radiation being detected by the radiation detector (104) following passage through the measurement chamber (102). A diffusion layer (131) is configured to allow diffusion of ambient gas into and out from the measurement chamber (102), and the diffusion layer (131) comprises means (133) for preventing diffusion of carbon dioxide (CO2) in the ambient gas into the measurement chamber (102). The invention also relates a nitrous oxide detector comprising such a gas sensor, and a method for determining presence of nitrous oxide in the ambience.