DE3640734A1 - Sensor with electronic humidity and temperature correction - Google Patents

Sensor with electronic humidity and temperature correction

Info

Publication number
DE3640734A1
DE3640734A1 DE19863640734 DE3640734A DE3640734A1 DE 3640734 A1 DE3640734 A1 DE 3640734A1 DE 19863640734 DE19863640734 DE 19863640734 DE 3640734 A DE3640734 A DE 3640734A DE 3640734 A1 DE3640734 A1 DE 3640734A1
Authority
DE
Germany
Prior art keywords
humidity
temperature
sensor
correct
measurement
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
DE19863640734
Other languages
German (de)
Inventor
Heinrich Igelbuescher
Heinrich Gresch
Heribert Dewert
Peter Burggraef
Heinz Hoelter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19863640734 priority Critical patent/DE3640734A1/en
Priority to JP62504882A priority patent/JPH01500459A/en
Priority to DE8787905202T priority patent/DE3776125D1/en
Priority to PCT/EP1987/000411 priority patent/WO1988001057A2/en
Priority to AT87905202T priority patent/ATE71727T1/en
Priority to EP87905202A priority patent/EP0275301B1/en
Priority to US07/177,549 priority patent/US4875406A/en
Publication of DE3640734A1 publication Critical patent/DE3640734A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/008—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being air quality
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0085—Smell or pollution preventing arrangements
    • 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
    • G01N33/0026—General constructional details of gas analysers, e.g. portable test equipment using an alternating circulation of another gas

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Atmospheric Sciences (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

It is known that semiconductor sensors, in particular those based on tin dioxide, are very strongly cross-sensitive to temperature and humidity variations. In some cases, the variation is so large that measurement shifts of up to 70% may occur, particularly as a result of humidity variation. The effect is of a similar magnitude in the case of temperature variations. It is known to make a temperature compensation by means of temperature sensors. The humidity can be measured technically only as relative humidity. This measurement results, however, in very different absolute humidities at different air temperatures so that the magnitude of the relative humidity cannot be used directly to correct for the humidity loss. In order to eliminate these disadvantages, it is proposed according to the invention to correct the measurement given by a semiconductor sensor using a correction factor from a microprocessor memory which is determined in accordance with the mean temperature and humidity.

Description

Es ist bekannt, daß Halbleiter-Sensoren, insbesondere auf Zinndioxid-Basis, sehr stark querempfindlich sind gegen­ über Temperatur- und Feuchteschwankungen.It is known that semiconductor sensors, in particular Tin dioxide base, are very cross sensitive to about temperature and humidity fluctuations.

Teilweise ist die Schwankung derart groß, daß bis zu 70% Meßwertverschiebungen auftreten können und zwar durch unterschiedliche Feuchte.Sometimes the fluctuation is so great that up to 70% measured value shifts can occur due to different humidity.

Ähnlich groß ist der Einfluß bei Temperaturschwankungen. Bekannt ist, über Temperaturfühler eine Temperatur­ kompensation herbeizuführen. Die Feuchte läßt sich technisch nur als relative Feuchte messen. Dieser Meßwert führt jedoch zu ganz unterschiedlichen absoluten Feuchten bei unterschiedlicher Lufttemperatur, so daß das Maß der relativen Feuchte nicht unmittelbar zur Korrektur des Feuchteabflusses herangezogen werden kann.The influence of temperature fluctuations is similar. It is known to use a temperature sensor bring about compensation. The humidity can be measure technically only as relative humidity. This reading however leads to very different absolute humidity levels at different air temperatures, so that the degree of relative humidity not immediately to correct the  Moisture drainage can be used.

Daher wird die Korrektur sehr aufwendig, da eine Korrektur im allgemeinen nur über einen Rechner gelöst werden kann. Erfindungsgemäß wird daher ein vereinfachter, wirtschaftlicher Weg vorge­ schlagen, der darin besteht, daß die Temperatur­ werte in einer zweidimensionalen Matrix festgelegt werden, und so kann in einem kleinen Mikroprozessor von nur 4 K Kapazität ein Feld mit 200 Werten abge­ speichert werden. Dieses genügt, um eine genügend genaue Kompensation vorzunehmen.Therefore, the correction is very complex, because a Correction generally only via a computer can be solved. According to the invention a simplified, economical way is featured beat, which is that the temperature values in a two-dimensional matrix can be, and so in a small microprocessor a field with 200 values from only 4 K capacity be saved. This is enough to make one sufficient make exact compensation.

In erfindungsgemäßer Anordnung ist in der Zeichnung dargestellt:
mit (1) der Gassensor;
mit (2) der Temperaturfühler;
mit (3) der Feuchtesensor die gemeinsam ihre Werte in einen Mikroprozessor (4) geben. In the arrangement according to the invention, the drawing shows:
with ( 1 ) the gas sensor;
with ( 2 ) the temperature sensor;
with ( 3 ) the humidity sensor which together enter their values into a microprocessor ( 4 ).

Der Mikroprozessor sucht für die Temperatur- und Feuchtewerte den jeweils entsprechenden Korrekturwert heraus mit dem der Gassensorwert korrigiert wird.The microprocessor searches for the temperature and Humidity values the corresponding correction value with which the gas sensor value is corrected.

Dadurch wird ein temperatur- und feuchte-unabhängiges Ausgangssignal am Ausgang erhalten.This makes it independent of temperature and humidity Receive output signal at the output.

Claims (1)

Sensorsystem zur Schadstofferfassung dadurch gekennzeichnet, daß der Meßwert eines Halbleiter- Sensors mit einem Korrekturfaktor aus einem Mikroprozessorspeicher korrigiert wird, der ent­ sprechend der Mitteltemperatur und Feuchte bestimmt wird.Sensor system for pollutant detection, characterized in that the measured value of a semiconductor sensor is corrected with a correction factor from a microprocessor memory, which is determined accordingly, the mean temperature and humidity.
DE19863640734 1986-08-02 1986-11-28 Sensor with electronic humidity and temperature correction Withdrawn DE3640734A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE19863640734 DE3640734A1 (en) 1986-11-28 1986-11-28 Sensor with electronic humidity and temperature correction
JP62504882A JPH01500459A (en) 1986-08-02 1987-07-29 Device for detecting the content of various harmful substances in gas streams
DE8787905202T DE3776125D1 (en) 1986-08-02 1987-07-29 DEVICE FOR DETECTING DIFFERENT POLLUTANT CONTENTS OF GAS FLOWS.
PCT/EP1987/000411 WO1988001057A2 (en) 1986-08-02 1987-07-29 Device for detecting different pollutants contained in gas streams
AT87905202T ATE71727T1 (en) 1986-08-02 1987-07-29 DEVICE FOR DETECTING DIFFERENT POLLUTANT CONTENT IN GAS FLOW.
EP87905202A EP0275301B1 (en) 1986-08-02 1987-07-29 Device for detecting different pollutants contained in gas streams
US07/177,549 US4875406A (en) 1986-08-02 1987-07-29 Device for detecting different pollutants in gas streams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863640734 DE3640734A1 (en) 1986-11-28 1986-11-28 Sensor with electronic humidity and temperature correction

Publications (1)

Publication Number Publication Date
DE3640734A1 true DE3640734A1 (en) 1988-06-09

Family

ID=6315027

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863640734 Withdrawn DE3640734A1 (en) 1986-08-02 1986-11-28 Sensor with electronic humidity and temperature correction

Country Status (1)

Country Link
DE (1) DE3640734A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3840961A1 (en) * 1988-12-05 1990-06-07 Hellige Gmbh Ion-sensitive electrode and method for compensating for the temperature dependence in such electrodes
DE3840962A1 (en) * 1988-12-05 1990-06-07 Hellige Gmbh Ion-sensitive electrode and method for compensating for the temperature dependence in such electrodes
WO1993008550A1 (en) * 1991-10-24 1993-04-29 Capteur Sensors & Analysers Ltd. Fire detector and a method of detecting a fire
EP0677740A2 (en) * 1994-04-13 1995-10-18 General Signal Corporation Humidity compensated carbon dioxide gas measurement and control system
DE102006035173A1 (en) * 2006-07-06 2008-01-17 Woelke Industrieelektronik Gmbh Gas i.e. methane, concentration-measuring values correcting method, involves determining respective parameter measured value together with given concentration measured value before usage of sensors, control unit and memory
FR2931944A3 (en) * 2008-06-02 2009-12-04 Renault Sas Air quantity measuring bench for passenger compartment of car, has burnt gas supplying conduit with outlet connected to or positioned near air intake socket, and analysis units analyzing air present in passenger compartment
EP2887057A1 (en) * 2013-12-17 2015-06-24 Sensirion AG Device and method of humidity compensated gas concentration monitoring by thermal conductivity measurements

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3201474A1 (en) * 1982-01-19 1983-07-28 Ludwig Bollmann Kg, 7703 Rielasingen Method of measuring the moisture content of materials and device for this purpose
DE3217799A1 (en) * 1982-05-12 1983-11-17 Hans-Jörg Dipl.-Kfm. 4400 Münster Hübner Measuring instrument for measuring and processing characteristic quantities of the environmental atmosphere, particularly below ground
DE3242967A1 (en) * 1982-11-20 1984-05-24 Hans-Jörg Dipl.-Kfm. 4400 Münster Hübner Method and measuring instrument for measuring and processing characteristic quantities of the environmental atmosphere, particularly below ground
DE3309802A1 (en) * 1983-03-18 1984-09-20 Audi Nsu Auto Union Ag, 7107 Neckarsulm Electronic system for motor vehicles
DE3411306A1 (en) * 1983-03-28 1984-10-11 Ondyne Inc., Concord, Calif. HYGROMETER PROBE
DE3318714A1 (en) * 1983-05-21 1984-11-22 Karl-Heinz 6104 Seeheim-Jugenheim Schmidt Device for recording and displaying weather-determining data
DE3318977A1 (en) * 1983-05-25 1984-11-29 Siemens AG, 1000 Berlin und 8000 München Measurement value pick-up with an information carrier containing operating data
DE3437445A1 (en) * 1984-10-12 1986-05-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Method and apparatus for compensating for the temperature dependence of an electrochemical measuring cell

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3201474A1 (en) * 1982-01-19 1983-07-28 Ludwig Bollmann Kg, 7703 Rielasingen Method of measuring the moisture content of materials and device for this purpose
DE3217799A1 (en) * 1982-05-12 1983-11-17 Hans-Jörg Dipl.-Kfm. 4400 Münster Hübner Measuring instrument for measuring and processing characteristic quantities of the environmental atmosphere, particularly below ground
DE3242967A1 (en) * 1982-11-20 1984-05-24 Hans-Jörg Dipl.-Kfm. 4400 Münster Hübner Method and measuring instrument for measuring and processing characteristic quantities of the environmental atmosphere, particularly below ground
DE3309802A1 (en) * 1983-03-18 1984-09-20 Audi Nsu Auto Union Ag, 7107 Neckarsulm Electronic system for motor vehicles
DE3411306A1 (en) * 1983-03-28 1984-10-11 Ondyne Inc., Concord, Calif. HYGROMETER PROBE
DE3318714A1 (en) * 1983-05-21 1984-11-22 Karl-Heinz 6104 Seeheim-Jugenheim Schmidt Device for recording and displaying weather-determining data
DE3318977A1 (en) * 1983-05-25 1984-11-29 Siemens AG, 1000 Berlin und 8000 München Measurement value pick-up with an information carrier containing operating data
DE3437445A1 (en) * 1984-10-12 1986-05-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Method and apparatus for compensating for the temperature dependence of an electrochemical measuring cell

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3840961A1 (en) * 1988-12-05 1990-06-07 Hellige Gmbh Ion-sensitive electrode and method for compensating for the temperature dependence in such electrodes
DE3840962A1 (en) * 1988-12-05 1990-06-07 Hellige Gmbh Ion-sensitive electrode and method for compensating for the temperature dependence in such electrodes
WO1993008550A1 (en) * 1991-10-24 1993-04-29 Capteur Sensors & Analysers Ltd. Fire detector and a method of detecting a fire
EP0677740A2 (en) * 1994-04-13 1995-10-18 General Signal Corporation Humidity compensated carbon dioxide gas measurement and control system
EP0677740A3 (en) * 1994-04-13 1997-01-02 Gen Signal Corp Humidity compensated carbon dioxide gas measurement and control system.
DE102006035173A1 (en) * 2006-07-06 2008-01-17 Woelke Industrieelektronik Gmbh Gas i.e. methane, concentration-measuring values correcting method, involves determining respective parameter measured value together with given concentration measured value before usage of sensors, control unit and memory
FR2931944A3 (en) * 2008-06-02 2009-12-04 Renault Sas Air quantity measuring bench for passenger compartment of car, has burnt gas supplying conduit with outlet connected to or positioned near air intake socket, and analysis units analyzing air present in passenger compartment
EP2887057A1 (en) * 2013-12-17 2015-06-24 Sensirion AG Device and method of humidity compensated gas concentration monitoring by thermal conductivity measurements

Similar Documents

Publication Publication Date Title
DE3640734A1 (en) Sensor with electronic humidity and temperature correction
DE317429T1 (en) CALIBRATION METHOD FOR FORCE OR TORQUE MEASURING DEVICES.
US4778998A (en) Humidity compensation for a photoionization type detector
EP0069392A3 (en) Digital measurement sensor, its use and method of manufacture
SE8704886L (en) SET TO REDUCE THE SENSITIVITY OF A MEASURING INSTRUMENT
DE3424288C2 (en)
EP0092246B1 (en) Method and apparatus for determining concentration of gas
EP0548842B1 (en) Device for determining the moisture content of gases
CN107607144A (en) A kind of sensor base line drift correction method and detection device
US3084542A (en) Load cell
US4006350A (en) Method for performing a separating analysis
Aggelides et al. Comparison of empirical equations for temperature correction of gypsum sensors
SU489005A1 (en) Strain gauge transducer
SU459664A1 (en) Strain gauge bridge
RU2031356C1 (en) Strain-measuring converter
Gross et al. The use of the Personality Research Form with alcoholics: effects of age and IQ.
JPS57118148A (en) Measuring apparatus for relative humidity
DE3201474A1 (en) Method of measuring the moisture content of materials and device for this purpose
Grace et al. Computational enhancement of MOS gas sensor selectivity
JPH0282137A (en) Laser system gas sensor
DE9103361U1 (en) pO↓2↓ measuring device with integrated recorder
Brokaw Linear ICS-A Backdoor on Sensor Technology
SU386329A1 (en) DEVICE FOR MEASURING RELATIVE AIR MOISTURE
DD239670A1 (en) PROCESS AND MONITORING DEVICE FOR DETERMINING REAL WATER-DAPFTAUTO POINTS
Paule et al. Ruggedness Testing–Part II: Recognizing Interactions

Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee