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公开(公告)号：US20120055232A1
公开(公告)日：2012-03-08
申请号：US12876501
申请日：2010-09-07
Applicant: Walter R. Thorson
Inventor： Walter R. Thorson
IPC: G01N21/17
CPC classification number: G01N21/1702 , G01N2201/1211 , G01N2201/1214 , G01N2201/1218 , G01N2201/123
Abstract: A flexible gas sensor includes a housing with a predetermined form factor, a photoacoustic gas sensing chamber, and at least one of acoustic, temperature, relative humidity or pressure sensors in combination with processing circuitry which can emulate the characteristic gas response output of a catalytic bead pellistor-type gas sensor in response to a selected gas. The processing circuitry can include a programmable processor and a storage unit. The storage unit can be loaded with data and executable instructions to specify, at least in part, how the signals from the photoacoustic sensor are to be processed by the processing circuitry.
Abstract translation: 柔性气体传感器包括具有预定形状因数的壳体，光声气体检测室以及与处理电路组合的声学，温度，相对湿度或压力传感器中的至少一个，其可以模拟催化珠粒的特征气体响应输出 响应于所选气体的电阻型气体传感器。 处理电路可以包括可编程处理器和存储单元。 存储单元可以被加载数据和可执行指令，以至少部分地指定来自光声传感器的信号将如何由处理电路来处理。
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公开(公告)号：US20110270534A1
公开(公告)日：2011-11-03
申请号：US13085346
申请日：2011-04-12
Applicant: George Burba , Dayle McDermitt , Anatoly Komissarov , Tyler G. Anderson , Liukang Xu , Bradley A. Riensche
Inventor： George Burba , Dayle McDermitt , Anatoly Komissarov , Tyler G. Anderson , Liukang Xu , Bradley A. Riensche
IPC: G06F19/00
CPC classification number: G01N21/3504 , G01N21/39 , G01N2201/1211 , G01N2201/1214 , G01N2201/1218
Abstract: Disclosed embodiments of the present invention provide means to obtain correct gas density and flux measurements using (i) gas analyzer (open-path, or closed-path gas analyzers with short intake tube, for example 1 m long, or any combination of the two); (ii) fast temperature or sensible heat flux measurement device (such as, fine-wire thermocouple, sonic anemometer, or any other device providing fast accurate gas temperature measurements); (iii) fast air water content or latent heat flux measurement device (such as, hygrometer, NDIR analyzer, any other device providing fast accurate gas water content measurements); (iv) vertical wind or sampling device (such as sonic anemometer, scintillometer, or fast solenoid valve, etc.) and (v) algorithms in accordance with the present invention to compute the corrected gas flux, compensated for T-P effects. In case when water factor in T-P effects is negligible, the fast air water content or latent heat flux measurement device (item iii in last paragraph) can be excluded.
Abstract translation: 本发明的公开的实施例提供了使用（i）气体分析仪（具有短进气管的开放路径或闭路气体分析器，例如1米长，或两者的任何组合）获得正确的气体密度和通量测量的方法 ）; （ii）快速温度或显热通量测量装置（例如细线热电偶，声波风速计或提供快速精确气体温度测量的任何其他装置）; （iii）快速空气含水量或潜热通量测量装置（如湿度计，NDIR分析仪，任何其他提供快速准确气体含水量测量的装置）; （iv）垂直风或取样装置（例如声波风速计，闪烁仪或快速电磁阀等）和（v）根据本发明的计算校正气体通量的算法，补偿T-P效应。 在T-P效应中的水分因子可忽略的情况下，可以排除快速空气含水量或潜热通量测量装置（最后一项中的项目iii）。
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公开(公告)号：US5245405A
公开(公告)日：1993-09-14
申请号：US922874
申请日：1992-07-31
Applicant: John R. Mitchell , Joseph W. Carter , Donald E. Gregonis
Inventor： John R. Mitchell , Joseph W. Carter , Donald E. Gregonis
CPC classification number: G01N21/15 , G01N21/65 , G01N2021/151 , G01N2021/391 , G01N2021/651 , G01N2021/8578 , G01N21/05 , G01N2201/1218
Abstract: A gas analysis cell having a pressure control system eliminates pressure variations in the gas cell regardless of changes in restriction, gas viscosity and barometric pressure. Since optical alignment through the gas cell is sensitive to gas pressure, maintaining a constant pressure in the gas cell makes the system more stable.
Abstract translation: 具有压力控制系统的气体分析单元消除了气室中的压力变化，而不管限制，气体粘度和大气压力的变化。 由于通过气室的光学对准对气体压力敏感，因此在气室中保持恒定的压力使得系统更加稳定。
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公开(公告)号：US4859859A
公开(公告)日：1989-08-22
申请号：US24769
申请日：1987-03-11
Applicant: Daniel W. Knodle , William E. Crone
Inventor： Daniel W. Knodle , William E. Crone
CPC classification number: G01J3/108 , A61B5/0836 , A61B5/097 , G01J3/02 , G01J3/0286 , G01N21/3504 , A61M16/04 , A61M2016/102 , G01J2001/182 , G01N2021/3166 , G01N2201/06186 , G01N2201/1218
Abstract: Gas analyzers of the non-dispersive infrared radiation type which are designed to measure the concentration of one gas in a mixture of gases containing that gas. A novel, electrically modulated, stable, thick film infrared radiation emitter is employed to emit a beam of collimated, focused energy; and two electrically biased detectors are preferably used so that a ratioed, error eliminating output signal can be supplied to the failsafe, signal processing circuitry of the analyzer. The latter, and a conventional analog-to-digital convertor, supply information to a microcomputer which: (1) turns the infrared radiation emitter on and off; (2) controls a heater which keeps the infrared radiation detectors at a constant, precise temperature; and (3) controls displays of a variety of information concerning the gas being measured and the status of the gas analyzer. The microcomputer also accepts ambient temperature, barometric pressure, and other compensation factors. Typically, a disposable airway adapter will be included in the gas analyzer to confine the mixture of gases being analyzed to a path having a transverse dimension of precise and specific length and to provide an optical path across that stream of gases between the infrared radiation emitter and the infrared radiation detectors. The emitter and detectors are incorporated in a transducer head which can be detachably fixed to the airway adapter.
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公开(公告)号：US12105041B2
公开(公告)日：2024-10-01
申请号：US17974832
申请日：2022-10-27
Inventor： Cheol Min Park , Jeongok Park , Seung Won Lee , Ji Hye Jang , Hye Jin Kim , Kyoung Jin Lee
CPC classification number: G01N27/07 , G01N27/14 , G01N27/226 , G01N2201/1211 , G01N2201/1218
Abstract: A detection device includes a substrate, first electrodes formed on a first surface of the substrate, a responsive layer, and second electrodes formed on a first surface of the responsive layer, each of the second electrodes are capacitively coupled to one of the first electrodes and each second electrode is connected to a power supply to provide driving power.
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Patent Agency Ranking
公开(公告)号：US11686671B2
公开(公告)日：2023-06-27
申请号：US17288300
申请日：2019-10-18
Applicant: FUJIKIN INCORPORATED
Inventor： Masaaki Nagase , Hidekazu Ishii , Kouji Nishino , Nobukazu Ikeda
CPC classification number: G01N21/31 , G01N21/85 , G01N33/0037 , G01N2201/1211 , G01N2201/1218 , H01L21/02274
Abstract: A concentration measurement device 100 includes a light source 22 for generating incident light to a measurement space 10A, a photodetector 24 for receiving light emitted from the measurement space, and an arithmetic control circuit 26 for calculating a concentration of a measurement fluid on the basis of an output of the photodetector, and the light source includes a first light-emitting element 22a for generating light having a first wavelength, and a second light-emitting element 22b for generating light having a second wavelength, and the concentration measurement device is configured so as to calculate the concentration using either light of the first wavelength or the second wavelength on the basis of the pressure or temperature of the measurement fluid.
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公开(公告)号：US10018561B2
公开(公告)日：2018-07-10
申请号：US14420101
申请日：2013-07-23
Applicant: PerkinElmer Singapore PTE Ltd
Inventor： Robert Alan Hoult
IPC: G01N21/62 , G01J3/28 , G01N21/27 , G01N21/552
CPC classification number: G01N21/62 , G01J3/28 , G01N21/274 , G01N21/552 , G01N2201/1218 , G01N2201/12784
Abstract: A method of using a spectrometer to produce corrected diamond Attenuated Total Reflectance (ATR) spectral data includes acquiring, using the spectrometer, an initial set of ATR spectral data for a sample pressed into contact with a diamond ATR crystals; numerically matching, using the spectrometer, a pressure dependent diamond artifact reference spectrum to a corresponding pressure dependent diamond artifact in the initial set of ATR spectral data; and numerically subtracting out the numerically matched pressure dependent diamond artifact reference spectrum from the initial set of ATR spectral data to yield a corrected set of ATR spectral data for the sample for output by the spectrometer.
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28.发明申请SYSTEM AND METHOD FOR MEASURING CONCENTRATION OF A TRACE GAS IN A GAS MIXTURE 有权用于测量气体混合气中气体浓度的系统和方法公开(公告)号：US20170003218A1
公开(公告)日：2017-01-05
申请号：US14278335
申请日：2014-05-15
Applicant: General Electric Company
Inventor： Rachit Sharma , Chayan Mitra , Sandip Maity , Vinayak Tilak , Xiaoyong Liu , Anthony Kowal , Chong Tao
CPC classification number: G01N21/39 , G01N21/274 , G01N33/004 , G01N2021/399 , G01N2201/1218
Abstract: A method includes receiving a gas mixture at a first pressure including at least a primary gas and a secondary gas and changing a pressure of the received gas mixture from the first pressure to a second pressure. Further, the method includes determining a spectra of the gas mixture at the second pressure, wherein at least the first spectral line of the primary gas is spectrally distinguished from at least the second spectral line of the secondary gas, identifying a peak wavelength associated with the spectrally distinguished first spectral line of the primary gas based on at least two wavelengths of the secondary gas corresponding to at least two peak amplitudes in the spectra of the gas mixture, and determining a concentration of the primary gas based on the identified peak wavelength associated with the spectrally distinguished first spectral line of the primary gas.
Abstract translation: 一种方法包括在包括至少初级气体和次级气体的第一压力下接收气体混合物，并将接收到的气体混合物的压力从第一压力改变到第二压力。 此外，该方法包括在第二压力下确定气体混合物的光谱，其中至少第一主气体的第一谱线与第二气体的至少第二谱线进行光谱区分，识别与第二气体相关联的峰值波长 基于对应于气体混合物的光谱中的至少两个峰值振幅的二次气体的至少两个波长的主气体的谱分辨第一谱线，以及基于与所述气体混合物相关联的所识别的峰值波长来确定初级气体的浓度 主要气体的光谱区分第一谱线。
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公开(公告)号：US08942944B2
公开(公告)日：2015-01-27
申请号：US13231661
申请日：2011-09-13
Applicant: David E. Forsyth
Inventor： David E. Forsyth
CPC classification number: G01N21/643 , G01N21/274 , G01N33/00 , G01N2021/6432 , G01N2201/1211 , G01N2201/1218 , G01N2201/126 , G01N2201/127 , G01N2201/12746 , G06F17/40 , G06F19/00
Abstract: An oxygen sensing system including an oxygen sensor, a microprocessor and one or more additional sensors for sensing parameters associated with the environment or with the oxygen sensor, accounts for one or more sensed conditions when calculating oxygen levels. The one or more sensors may sense conditions associated with environmental effects or effects of use that may cause the oxygen sensor to degrade over usage or over time. A baseline amplification and measurement circuit coupled to the oxygen sensor may enable the sensor to operate less frequently or for shorter periods of time, thereby increasing the life span, calibration hold time of the sensor, and reducing power requirements.
Abstract translation: 包括氧传感器，微处理器和用于感测与环境相关联的参数或氧传感器的一个或多个附加传感器的氧气感测系统在计算氧水平时考虑了一个或多个感测到的状况。 一个或多个传感器可以感测与环境影响或使用效果相关的条件，这可能导致氧传感器在使用或时间上降级。 耦合到氧传感器的基线放大和测量电路可以使得传感器能够较少频繁地操作或者更短的时间段，由此增加寿命，传感器的校准保持时间和降低功率需求。
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公开(公告)号：US20130066564A1
公开(公告)日：2013-03-14
申请号：US13231661
申请日：2011-09-13
Applicant: David E. Forsyth
Inventor： David E. Forsyth
IPC: G06F19/00
CPC classification number: G01N21/643 , G01N21/274 , G01N33/00 , G01N2021/6432 , G01N2201/1211 , G01N2201/1218 , G01N2201/126 , G01N2201/127 , G01N2201/12746 , G06F17/40 , G06F19/00
Abstract: An oxygen sensing system including an oxygen sensor, a microprocessor and one or more additional sensors for sensing parameters associated with the environment or with the oxygen sensor, accounts for one or more sensed conditions when calculating oxygen levels. The one or more sensors may sense conditions associated with environmental effects or effects of use that may cause the oxygen sensor to degrade over usage or over time. A baseline amplification and measurement circuit coupled to the oxygen sensor may enable the sensor to operate less frequently or for shorter periods of time, thereby increasing the life span, calibration hold time of the sensor, and reducing power requirements.
Abstract translation: 包括氧传感器，微处理器和用于感测与环境相关联的参数或氧传感器的一个或多个附加传感器的氧气感测系统在计算氧水平时考虑了一个或多个感测到的状况。 一个或多个传感器可以感测与环境影响或使用效果相关的条件，这可能导致氧传感器在使用或时间上降级。 耦合到氧传感器的基线放大和测量电路可以使得传感器能够较少频繁地操作或者更短的时间段，由此增加寿命，传感器的校准保持时间和降低功率需求。
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