WO2005085771A3 - Ultraschall-strömungssensor mit mehrfacher nulldurchgangsdetektion - Google Patents

Ultraschall-strömungssensor mit mehrfacher nulldurchgangsdetektion Download PDF

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Publication number
WO2005085771A3
WO2005085771A3 PCT/EP2005/050163 EP2005050163W WO2005085771A3 WO 2005085771 A3 WO2005085771 A3 WO 2005085771A3 EP 2005050163 W EP2005050163 W EP 2005050163W WO 2005085771 A3 WO2005085771 A3 WO 2005085771A3
Authority
WO
WIPO (PCT)
Prior art keywords
ultrasonic
flow sensor
zero crossing
ultrasonic flow
crossing detection
Prior art date
Application number
PCT/EP2005/050163
Other languages
English (en)
French (fr)
Other versions
WO2005085771A2 (de
Inventor
Tobias Lang
Original Assignee
Bosch Gmbh Robert
Tobias Lang
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 Bosch Gmbh Robert, Tobias Lang filed Critical Bosch Gmbh Robert
Publication of WO2005085771A2 publication Critical patent/WO2005085771A2/de
Publication of WO2005085771A3 publication Critical patent/WO2005085771A3/de

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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
    • G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

Die Erfindung betrifft einen Ultraschall-Strömungssensor, insbesondere zum Messen des Volumen- oder Massestroms eines Fluids (1), mit zwei in Strömungsrichtung (2) versetzt angeordneten Ultraschallwandlern (A,B), die jeweils ein Ultraschallsignal (An,Bn) an den anderen Ultraschallwandler (B,A) aussenden, wobei aus den Laufzeiten (t12,t21) der Ultraschallsignale (An,Bn) eine Messgröße (S) ermittelt wird. Die Messgenauigkeit des Strömungssensors kann wesentlich verbessert werden, indem eine Steuer- und Auswerteeinheit (4) vorgesehen ist, die bei Empfang eines Ultraschallsignals (A1,B1) an einem der Ultraschallsignals (A,B) jeweils mehrere Empfangszeitpunkte (ti′, ti″) pro Signal (A1,B1) detektiert, aus denen die Messgröße (S) gebildet wird.
PCT/EP2005/050163 2004-03-03 2005-01-17 Ultraschall-strömungssensor mit mehrfacher nulldurchgangsdetektion WO2005085771A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004010290.2 2004-03-03
DE200410010290 DE102004010290A1 (de) 2004-03-03 2004-03-03 Ultraschall-Strömungssensor mit mehrfacher Nulldurchgangsdetektion

Publications (2)

Publication Number Publication Date
WO2005085771A2 WO2005085771A2 (de) 2005-09-15
WO2005085771A3 true WO2005085771A3 (de) 2006-05-26

Family

ID=34877278

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/050163 WO2005085771A2 (de) 2004-03-03 2005-01-17 Ultraschall-strömungssensor mit mehrfacher nulldurchgangsdetektion

Country Status (2)

Country Link
DE (1) DE102004010290A1 (de)
WO (1) WO2005085771A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2672813A1 (en) 2006-12-18 2008-06-26 Airbus France Device and method for monitoring the particle contamination in flowing hydraulic fluids

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693433A (en) * 1970-03-31 1972-09-26 Kaijo Denki Kk Ultrasonic anemometer
EP1211488A2 (de) * 2000-11-27 2002-06-05 Tokyo Keiso Kabushiki-Kaisha Nach dem Laufzeitprinzip arbeitender Ultraschall-Durchflussmesser
US20030200817A1 (en) * 2002-04-30 2003-10-30 Matsushita Electric Industrial Co., Ltd. Ultrasonic flowmeter and method of measuring flow volume

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693433A (en) * 1970-03-31 1972-09-26 Kaijo Denki Kk Ultrasonic anemometer
EP1211488A2 (de) * 2000-11-27 2002-06-05 Tokyo Keiso Kabushiki-Kaisha Nach dem Laufzeitprinzip arbeitender Ultraschall-Durchflussmesser
US20030200817A1 (en) * 2002-04-30 2003-10-30 Matsushita Electric Industrial Co., Ltd. Ultrasonic flowmeter and method of measuring flow volume

Also Published As

Publication number Publication date
WO2005085771A2 (de) 2005-09-15
DE102004010290A1 (de) 2005-09-22

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