WO2005106390A3 - Vorrichtung zur bestimmung und/oder überwachung des füllstandes eines mediums - Google Patents

Vorrichtung zur bestimmung und/oder überwachung des füllstandes eines mediums Download PDF

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Publication number
WO2005106390A3
WO2005106390A3 PCT/EP2005/051951 EP2005051951W WO2005106390A3 WO 2005106390 A3 WO2005106390 A3 WO 2005106390A3 EP 2005051951 W EP2005051951 W EP 2005051951W WO 2005106390 A3 WO2005106390 A3 WO 2005106390A3
Authority
WO
WIPO (PCT)
Prior art keywords
piezoconverter
monitoring
determining
medium
filling level
Prior art date
Application number
PCT/EP2005/051951
Other languages
English (en)
French (fr)
Other versions
WO2005106390A2 (de
Inventor
Roland Grozinger
Klaus Ruf
Original Assignee
Endress & Hauser Gmbh & Co Kg
Roland Grozinger
Klaus Ruf
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 Endress & Hauser Gmbh & Co Kg, Roland Grozinger, Klaus Ruf filed Critical Endress & Hauser Gmbh & Co Kg
Publication of WO2005106390A2 publication Critical patent/WO2005106390A2/de
Publication of WO2005106390A3 publication Critical patent/WO2005106390A3/de

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2968—Transducers specially adapted for acoustic level indicators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2962—Measuring transit time of reflected waves
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/802—Circuitry or processes for operating piezoelectric or electrostrictive devices not otherwise provided for, e.g. drive circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

Die Erfindung bezieht sich auf eine Vorrichtung zur Bestimmung und/oder Überwachung des Füllstandes eines Mediums, mit einem Piezowandler (1) mit mindestens einem ersten (2) und einer zweiten Seite (3), wobei der Piezowandler (1) Ultraschallsignale erzeugt bzw. empfängt. Die Erfindung sieht vor, dass ein erstes (6) und ein zweites elektrisches Potential (7) vorhanden sind, wobei die beiden Potentiale (6, 7) unterschiedlich sind, dass eine Schalteranordnung mit Schaltern (S1, S2, S3, S4) vorhanden ist, die mit dem ersten (6) und dem zweiten potential (7) und dem Piezowandler (1) verbunden ist, dass mindestens eine Ansteuerlogik (20) vorhanden ist, die die Schalteranordnung steuert, und dass die zwei Seiten (2, 3) des Piezowandlers (1) über die Schalteranordnung periodisch abwechselnd mit dem ersten (6) und mit dem zweiten Potential (7) verbunden sind. Weiterhin gibt die Erfindung auch eine alternative Ausgestaltung mit einem ersten, einem zweiten und einem dritten Potential an.
PCT/EP2005/051951 2004-04-28 2005-04-28 Vorrichtung zur bestimmung und/oder überwachung des füllstandes eines mediums WO2005106390A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004020895A DE102004020895B4 (de) 2004-04-28 2004-04-28 Vorrichtung zur Bestimmung und/oder Überwachung des Füllstandes eines Mediums
DE102004020895.6 2004-04-28

Publications (2)

Publication Number Publication Date
WO2005106390A2 WO2005106390A2 (de) 2005-11-10
WO2005106390A3 true WO2005106390A3 (de) 2006-06-22

Family

ID=35160366

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/051951 WO2005106390A2 (de) 2004-04-28 2005-04-28 Vorrichtung zur bestimmung und/oder überwachung des füllstandes eines mediums

Country Status (2)

Country Link
DE (1) DE102004020895B4 (de)
WO (1) WO2005106390A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021110155A1 (de) 2021-04-21 2022-10-27 Endress+Hauser Conducta Gmbh+Co. Kg Überprüfen einer Vorrichtung zum Erzeugen von Ultraschall

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3505478A1 (de) * 1985-02-16 1986-08-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und schaltungsanordnung zum betrieb eines piezokeramischen elektro-akustischen wandlers
JPS63178777A (ja) * 1987-01-19 1988-07-22 Wako Denki Kk 振動子用電源
EP0314982A2 (de) * 1987-11-04 1989-05-10 Dynamit Nobel Aktiengesellschaft Wechselrichter für hohe Spannungen und hohe Frequenzen
DE4027969C1 (en) * 1990-09-04 1991-11-07 Mgv Margret Gruber Vertrieb Gmbh, 8000 Muenchen, De Converter with controlled transistor bridge - has connecting choke divided into main and auxiliary chokes in diagonal branch of bridge
US5131271A (en) * 1990-04-16 1992-07-21 Magnetrol International, Inc. Ultrasonic level detector
DE4430078A1 (de) * 1994-08-25 1995-02-02 Manfred Prof Dr Ing Gekeler Schaltungsanordnung zur Vermeidung von Schaltverlusten eines Zweigpaares eines selbstgeführten Stromrichters mit eingeprägter Zwischenkreisgleichspannung
DE10130351A1 (de) * 2001-06-22 2003-01-02 Thomas Schulte Schaltung zur Speisung resonant betriebener piezokeramischer Wandler mit überlagerter Gleichspannung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE954134C (de) * 1952-10-07 1956-12-13 Atlas Werke Ag Schalteinrichtung zur Erzeugung von Stromstoessen zur Impulserregung eines Schallsenders
BE793601A (fr) * 1972-01-03 1973-07-02 Philips Nv Generateur d'ultrasons
DE19620133C2 (de) * 1996-05-18 2001-09-13 Endress Hauser Gmbh Co Schall- oder Ultraschallsensor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3505478A1 (de) * 1985-02-16 1986-08-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und schaltungsanordnung zum betrieb eines piezokeramischen elektro-akustischen wandlers
JPS63178777A (ja) * 1987-01-19 1988-07-22 Wako Denki Kk 振動子用電源
EP0314982A2 (de) * 1987-11-04 1989-05-10 Dynamit Nobel Aktiengesellschaft Wechselrichter für hohe Spannungen und hohe Frequenzen
US5131271A (en) * 1990-04-16 1992-07-21 Magnetrol International, Inc. Ultrasonic level detector
DE4027969C1 (en) * 1990-09-04 1991-11-07 Mgv Margret Gruber Vertrieb Gmbh, 8000 Muenchen, De Converter with controlled transistor bridge - has connecting choke divided into main and auxiliary chokes in diagonal branch of bridge
DE4430078A1 (de) * 1994-08-25 1995-02-02 Manfred Prof Dr Ing Gekeler Schaltungsanordnung zur Vermeidung von Schaltverlusten eines Zweigpaares eines selbstgeführten Stromrichters mit eingeprägter Zwischenkreisgleichspannung
DE10130351A1 (de) * 2001-06-22 2003-01-02 Thomas Schulte Schaltung zur Speisung resonant betriebener piezokeramischer Wandler mit überlagerter Gleichspannung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FINK, CHRISTIANSEN: "Electronics Engineers' Handbook, Second Edition", 1982, MCGRAW - HILL, NY, XP002373272 *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 452 (E - 687) 28 November 1988 (1988-11-28) *

Also Published As

Publication number Publication date
DE102004020895A1 (de) 2005-11-17
WO2005106390A2 (de) 2005-11-10
DE102004020895B4 (de) 2012-05-24

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