DE69814474D1 - Messung von eigenschaften eines fluids mittels eines gemeinsamen frequenzgenerators und fast fouriertransformation (fft) - Google Patents

Messung von eigenschaften eines fluids mittels eines gemeinsamen frequenzgenerators und fast fouriertransformation (fft)

Info

Publication number
DE69814474D1
DE69814474D1 DE69814474T DE69814474T DE69814474D1 DE 69814474 D1 DE69814474 D1 DE 69814474D1 DE 69814474 T DE69814474 T DE 69814474T DE 69814474 T DE69814474 T DE 69814474T DE 69814474 D1 DE69814474 D1 DE 69814474D1
Authority
DE
Germany
Prior art keywords
fft
fluid
frequency generator
fourier transformation
common frequency
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.)
Expired - Lifetime
Application number
DE69814474T
Other languages
English (en)
Other versions
DE69814474T2 (de
Inventor
David Kubisiak
Ulrich Bonne
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of DE69814474D1 publication Critical patent/DE69814474D1/de
Application granted granted Critical
Publication of DE69814474T2 publication Critical patent/DE69814474T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/6845—Micromachined devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/6842—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow with means for influencing the fluid flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/7084—Measuring the time taken to traverse a fixed distance using thermal detecting arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/712—Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F5/00—Measuring a proportion of the volume flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
    • 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
    • G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/18—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested
    • 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
    • G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/18—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested
    • G01N27/185—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested using a catharometer

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Measuring Volume Flow (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
DE69814474T 1997-12-31 1998-12-03 Messung von eigenschaften eines fluids mittels eines gemeinsamen frequenzgenerators und fast fouriertransformation (fft) Expired - Lifetime DE69814474T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US1453 1997-12-31
US09/001,453 US6169965B1 (en) 1997-12-31 1997-12-31 Fluid property and flow sensing via a common frequency generator and FFT
PCT/US1998/025657 WO1999034198A2 (en) 1997-12-31 1998-12-03 Fluid property and flow sensing via a common frequency generator and fast fourier transformation

Publications (2)

Publication Number Publication Date
DE69814474D1 true DE69814474D1 (de) 2003-06-12
DE69814474T2 DE69814474T2 (de) 2004-03-18

Family

ID=21696098

Family Applications (4)

Application Number Title Priority Date Filing Date
DE69837946T Expired - Lifetime DE69837946T2 (de) 1997-12-31 1998-12-03 Durchflussmessung oder Messung anderer Eigenschaften eines Fluids mittels eines gemeinsamen Frequenzgenerators und Fast Fourier-Transformation (FFT)
DE69830343T Expired - Lifetime DE69830343T2 (de) 1997-12-31 1998-12-03 Thermischer druchflusssensor und sensor anderer eigenschaften eines fluids mit einem feedback loop der ein sensorelement in einer wheatstonebrücke zwingt dem widerstand eines variablen widerstandelements in the brücke zu folgen
DE69830345T Expired - Lifetime DE69830345T2 (de) 1997-12-31 1998-12-03 Thermische druchflussmessung oder messung anderer eigenschaften eines fluids durch bestimmung einer frequenz
DE69814474T Expired - Lifetime DE69814474T2 (de) 1997-12-31 1998-12-03 Messung von eigenschaften eines fluids mittels eines gemeinsamen frequenzgenerators und fast fouriertransformation (fft)

Family Applications Before (3)

Application Number Title Priority Date Filing Date
DE69837946T Expired - Lifetime DE69837946T2 (de) 1997-12-31 1998-12-03 Durchflussmessung oder Messung anderer Eigenschaften eines Fluids mittels eines gemeinsamen Frequenzgenerators und Fast Fourier-Transformation (FFT)
DE69830343T Expired - Lifetime DE69830343T2 (de) 1997-12-31 1998-12-03 Thermischer druchflusssensor und sensor anderer eigenschaften eines fluids mit einem feedback loop der ein sensorelement in einer wheatstonebrücke zwingt dem widerstand eines variablen widerstandelements in the brücke zu folgen
DE69830345T Expired - Lifetime DE69830345T2 (de) 1997-12-31 1998-12-03 Thermische druchflussmessung oder messung anderer eigenschaften eines fluids durch bestimmung einer frequenz

Country Status (7)

Country Link
US (1) US6169965B1 (de)
EP (4) EP1329713B1 (de)
JP (1) JP2002500355A (de)
CA (1) CA2316916A1 (de)
DE (4) DE69837946T2 (de)
ES (1) ES2195426T3 (de)
WO (1) WO1999034198A2 (de)

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Also Published As

Publication number Publication date
DE69830343D1 (de) 2005-06-30
DE69837946T2 (de) 2008-02-28
EP1068517A2 (de) 2001-01-17
DE69830345D1 (de) 2005-06-30
EP1329711A1 (de) 2003-07-23
WO1999034198A2 (en) 1999-07-08
ES2195426T3 (es) 2003-12-01
EP1068517B1 (de) 2003-05-07
US6169965B1 (en) 2001-01-02
EP1329713A1 (de) 2003-07-23
WO1999034198A3 (en) 1999-09-10
DE69830345T2 (de) 2006-05-04
EP1329711B1 (de) 2005-05-25
CA2316916A1 (en) 1999-07-08
DE69814474T2 (de) 2004-03-18
EP1329712A1 (de) 2003-07-23
JP2002500355A (ja) 2002-01-08
EP1329713B1 (de) 2007-06-13
DE69830343T2 (de) 2006-02-02
EP1329712B1 (de) 2005-05-25
DE69837946D1 (de) 2007-07-26

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