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BR9708844A - Processo para detecção de gases oxidáveis e/ou redutìveis no ar assim como equipamento para tal. - Google Patents

Processo para detecção de gases oxidáveis e/ou redutìveis no ar assim como equipamento para tal.

Info

Publication number
BR9708844A
BR9708844A BR9708844-7A BR9708844A BR9708844A BR 9708844 A BR9708844 A BR 9708844A BR 9708844 A BR9708844 A BR 9708844A BR 9708844 A BR9708844 A BR 9708844A
Authority
BR
Brazil
Prior art keywords
sensor
capacitance
change
gases
oxidizable
Prior art date
Application number
BR9708844-7A
Other languages
English (en)
Inventor
Hanns Rump
Original Assignee
Rosemarie Brand Gerhart
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rosemarie Brand Gerhart filed Critical Rosemarie Brand Gerhart
Publication of BR9708844A publication Critical patent/BR9708844A/pt

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/0037—NOx
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/004—CO or CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Electrochemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

Patente de Invenção: <B>"PROCESSO PARA DETECçãO DE GASES OXIDáVEIS E/OU REDUTìVEIS NO AR ASSIM COMO EQUIPAMENTO PARA TAL''<D>. A invenção refere-se a um processo e um equipamento para detecção de gases oxidáveis e/ou redutíveis no ar com o propósito de controle de instalações de ventilação em edifícios ou veículos e com o propósito da monitoração de processos de combustão e/ou de equipamentos de catalisador de gases de escapamento, com aplicação de pelo menos um sensor aquecido (5.1; 7.2), equipado com eletrodos de contacto (5.9; 5.10), percorridos por corrente elétrica, com um material de sensor metálico, preferentemente de óxido de metal policristalino, assim como com aplicação de um circuito elétrico de cálculo. O sensor (5.1; 7.2) é percorrido por corrente alternada, a qual ou consiste de pelo menos duas correntes alternadas de freq³ência diferente, ou é comutada entre pelo menos duas freq³ências, sendo que por um lado a variação das capacitâncias entre o material do sensor e os eletrodos de contato (5.9; 5.10) é avaliada como típica para a presença de gases redutíveis, e por outro lado, a variação das capacitâncias dentro da massa do material do sensor (material sensível) é avaliada como típica para a presença de gases oxidáveis, e as variações causadas por gases de resistências óhmicas do material do sensor são consideradas no contexto.
BR9708844-7A 1996-04-30 1997-04-29 Processo para detecção de gases oxidáveis e/ou redutìveis no ar assim como equipamento para tal. BR9708844A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19617297A DE19617297A1 (de) 1996-04-30 1996-04-30 Simultane Detektion von oxidierbaren und reduzierbaren Gasen mit Metalloxidsensoren unter Einsatz von Impedanzspektroskopie
PCT/EP1997/002208 WO1997041423A1 (de) 1996-04-30 1997-04-29 Verfahren zur detektion oxidierbarer und/oder reduzierbarer gase in der luft sowie vorrichtung hierzu

Publications (1)

Publication Number Publication Date
BR9708844A true BR9708844A (pt) 2000-01-04

Family

ID=7792900

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9708844-7A BR9708844A (pt) 1996-04-30 1997-04-29 Processo para detecção de gases oxidáveis e/ou redutìveis no ar assim como equipamento para tal.

Country Status (11)

Country Link
US (1) US6566894B2 (pt)
EP (1) EP0896667B1 (pt)
JP (1) JP3339867B2 (pt)
KR (1) KR20000065148A (pt)
AT (1) ATE366925T1 (pt)
AU (1) AU2774897A (pt)
BR (1) BR9708844A (pt)
CA (1) CA2256010A1 (pt)
DE (3) DE19617297A1 (pt)
IL (1) IL126711A (pt)
WO (1) WO1997041423A1 (pt)

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DE19650897A1 (de) * 1996-12-07 1998-06-10 T E M Tech Entwicklung Und Man Apparat und Verfahren zur Erhöhung der Sicherheit von Atemschutzmasken
DE19651402A1 (de) * 1996-12-11 1998-06-18 T E M Tech Entwicklung Und Man Apparat zur physikalischen Aufbereitung von Luft, insbesondere von Atemluft
DE19861198B4 (de) * 1998-11-11 2004-04-15 Robert Bosch Gmbh Sensor für die Untersuchung von Abgasen und Untersuchungsverfahren
DE19911869B4 (de) * 1999-03-17 2004-03-25 T.E.M.! Techn. Entwicklungen Und Management Gmbh Neuartige Atemschutzmaske mit Sensor-Mikrosystem und Verfahren zum Betreiben derselben
DE10110471C2 (de) 2001-03-05 2003-12-18 Siemens Ag Alkoholsensor nach dem Prinzip der Austrittsarbeitsmessung
DE10148855A1 (de) * 2001-10-04 2003-04-17 Bosch Gmbh Robert Sensor zur Ermittlung einer Kohlenmonoxidkonzentration eines Gasgemisches
US7465425B1 (en) * 2002-09-09 2008-12-16 Yizhong Sun Sensor and method for detecting analytes in fluids
CA2539639A1 (en) * 2004-03-31 2005-10-13 Dominic Cianciarelli Method and apparatus for monitoring catalytic abator efficiency
DE102004019638A1 (de) * 2004-04-22 2005-11-17 Siemens Ag FET-basierter Sensor zur Detektion von insbesondere reduzierenden Gasen, Herstellungs- und Betriebsverfahren
DE102004019640A1 (de) 2004-04-22 2005-11-17 Siemens Ag Verfahren zur Erhöhung der Selektivität von FET-basierten Gassensoren
DE102004019641B4 (de) * 2004-04-22 2009-10-01 Micronas Gmbh FET-basierter Gassensor
DE102004019604A1 (de) 2004-04-22 2005-11-17 Siemens Ag Verfahren zur Minimierung von Querempfindlichkeiten bei FET-basierten Gassensoren
US20060218989A1 (en) * 2005-03-30 2006-10-05 Dominic Cianciarelli Method and apparatus for monitoring catalytic abator efficiency
EP1707951A1 (de) * 2005-03-31 2006-10-04 Micronas GmbH Gassensitiver Feldeffekttransistor zur Detektion von Schwefelwasserstoff
EP1707952A1 (de) * 2005-03-31 2006-10-04 Micronas GmbH Gassensitiver Feldeffekttransistor mit Luftspalt und Verfahren zu dessen Herstellung
EP1715333B1 (de) * 2005-04-01 2010-07-28 Micronas GmbH Verfahren zur Signalauslesung an einem gassensitiven Feldeffekttransistor
US20080198524A1 (en) * 2007-02-16 2008-08-21 Dometic Corporation Absorption gas arrestor system
CN114377423A (zh) * 2009-09-01 2022-04-22 蓝区技术有限公司 用于气体处理的系统和方法
EP2762868B1 (en) * 2013-01-31 2017-03-15 Sensirion AG Diffusion based metal oxide gas sensor
US10281609B2 (en) * 2017-01-31 2019-05-07 L&P Property Management Company Multi-frequency landscape analysis system, method, and apparatus for furniture sensing
WO2018206385A1 (de) * 2017-05-08 2018-11-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Kalibrierverfahren, seine anwendung und vorrichtung zur durchführung des verfahrens
DE102018100216B3 (de) * 2018-01-08 2019-03-21 Eberspächer Climate Control Systems GmbH & Co. KG Brennkammerbaugruppe und Fahrzeugheizgerät
CN114324494B (zh) * 2021-12-07 2024-04-09 中国科学院物理研究所 一种半导体薄膜气体传感器
DE102023201750A1 (de) 2023-02-27 2024-08-29 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Betreiben eines Halbleitergassensors und Halbleitergassensor
US20240295536A1 (en) * 2023-03-01 2024-09-05 General Electric Company Multi-frequency sensing system and method
DE102023208834A1 (de) * 2023-09-12 2025-03-13 Robert Bosch Gesellschaft mit beschränkter Haftung Sensor und Sensorsystem

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US3993947A (en) * 1974-09-19 1976-11-23 Drexelbrook Controls, Inc. Admittance measuring system for monitoring the condition of materials
NL8105116A (nl) * 1981-11-12 1983-06-01 Philips Nv Sensor voor het bepalen van het zuurstofgehalte in een fluidum.
AU583621B2 (en) * 1985-05-16 1989-05-04 Sekisui Kaseihin Kogyo Kabushiki Kaisha Element for detecting carbon dioxide gas and process for producing the same
US4795968A (en) * 1986-06-30 1989-01-03 Sri International Gas detection method and apparatus using chemisorption and/or physisorption
US4906440A (en) * 1986-09-09 1990-03-06 The United States Of America As Represented By The Secretary Of The Air Force Sensor for detecting chemicals
US5019517A (en) * 1988-04-15 1991-05-28 Coulson Dale M System, detector and method for trace gases
DE3827426A1 (de) 1988-08-12 1990-02-15 Rump Elektronik Tech Vorrichtung zur durchfuehrung eines verfahrens zum zwecke der identifizierung und quantifizierung unbekannter gasfoermiger substanzen
DE3917853A1 (de) 1989-06-01 1990-12-06 Rump Elektronik Tech Gasempfindlicher halbleitersensor mit frequenzabhaengig veraenderter selektivitaet
US5238729A (en) * 1991-04-05 1993-08-24 Minnesota Mining And Manufacturing Company Sensors based on nanosstructured composite films
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Also Published As

Publication number Publication date
JP2000505560A (ja) 2000-05-09
US20020011851A1 (en) 2002-01-31
IL126711A (en) 2003-10-31
DE59712858D1 (de) 2007-08-23
ATE366925T1 (de) 2007-08-15
DE19780356D2 (de) 1999-04-01
EP0896667B1 (de) 2007-07-11
IL126711A0 (en) 1999-08-17
WO1997041423A1 (de) 1997-11-06
EP0896667A1 (de) 1999-02-17
AU2774897A (en) 1997-11-19
CA2256010A1 (en) 1997-11-06
DE19617297A1 (de) 1997-11-13
US6566894B2 (en) 2003-05-20
KR20000065148A (ko) 2000-11-06
JP3339867B2 (ja) 2002-10-28

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Legal Events

Date Code Title Description
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B11D Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time