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WO2005100928A3 - System and method for measuring the level of a liquid in a container - Google Patents

System and method for measuring the level of a liquid in a container Download PDF

Info

Publication number
WO2005100928A3
WO2005100928A3 PCT/EP2005/004066 EP2005004066W WO2005100928A3 WO 2005100928 A3 WO2005100928 A3 WO 2005100928A3 EP 2005004066 W EP2005004066 W EP 2005004066W WO 2005100928 A3 WO2005100928 A3 WO 2005100928A3
Authority
WO
WIPO (PCT)
Prior art keywords
container
liquid
measuring
level
oscillator
Prior art date
Application number
PCT/EP2005/004066
Other languages
German (de)
French (fr)
Other versions
WO2005100928A2 (en
Inventor
Eugen Schloetzer
Johann Ferstl
Original Assignee
Schlemmer Gmbh
Eugen Schloetzer
Johann Ferstl
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 Schlemmer Gmbh, Eugen Schloetzer, Johann Ferstl filed Critical Schlemmer Gmbh
Priority to EP05735129A priority Critical patent/EP1740912A2/en
Publication of WO2005100928A2 publication Critical patent/WO2005100928A2/en
Publication of WO2005100928A3 publication Critical patent/WO2005100928A3/en

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
    • G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

The system and method according to the invention for measuring the level of a liquid in a container, more particularly the fuel tank (2) in a motor vehicle, has an oscillator (6, 10, 13) and an oscillation sensor (11). According to the invention the frequency of the oscillator (10) can be controlled, and the oscillator (10) and the oscillation sensor (11) operate in a frequency range that includes body or air resonance frequencies of the container and/or system or parts thereof for the possible levels of liquid in the container.
PCT/EP2005/004066 2004-04-19 2005-04-17 System and method for measuring the level of a liquid in a container WO2005100928A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05735129A EP1740912A2 (en) 2004-04-19 2005-04-17 System and method for measuring the level of a liquid in a container

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004006530 2004-04-19
DE202004006530.4 2004-04-19

Publications (2)

Publication Number Publication Date
WO2005100928A2 WO2005100928A2 (en) 2005-10-27
WO2005100928A3 true WO2005100928A3 (en) 2006-05-18

Family

ID=34965296

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/004066 WO2005100928A2 (en) 2004-04-19 2005-04-17 System and method for measuring the level of a liquid in a container

Country Status (2)

Country Link
EP (1) EP1740912A2 (en)
WO (1) WO2005100928A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006009556B4 (en) * 2006-02-28 2014-02-13 Siemens Aktiengesellschaft Method for analyzing the electrolyte system of a battery and associated device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509045A1 (en) * 1981-07-03 1983-01-07 Cedepe Sa Electronic vehicle fuel gauge - detects resonance frequency of immersed membrane vibrated by VCO and amplifier circuit to provide continuous read=out
FR2522139A1 (en) * 1982-02-22 1983-08-26 Thomson Brandt Liq. volume measuring appts. for e.g. motor vehicle IC engine - uses microprocessor controlled electromagnetic transducer to apply vibrations to elastic medium inside tube immersed in liq.
GB2199948A (en) * 1987-01-16 1988-07-20 Emco Wheaton Uk Limited Measurement of liquid levels by resonating gas or vapour above the liquid
US5074148A (en) * 1990-01-05 1991-12-24 Lew Hyok S Resonance frequency liquid level sensor
US5184512A (en) * 1989-01-16 1993-02-09 Hrdlicka Armin W Measuring the length of a column of fluid in a tube
US20030140695A1 (en) * 2002-01-28 2003-07-31 Josef Fehrenbach Vibratory level sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509045A1 (en) * 1981-07-03 1983-01-07 Cedepe Sa Electronic vehicle fuel gauge - detects resonance frequency of immersed membrane vibrated by VCO and amplifier circuit to provide continuous read=out
FR2522139A1 (en) * 1982-02-22 1983-08-26 Thomson Brandt Liq. volume measuring appts. for e.g. motor vehicle IC engine - uses microprocessor controlled electromagnetic transducer to apply vibrations to elastic medium inside tube immersed in liq.
GB2199948A (en) * 1987-01-16 1988-07-20 Emco Wheaton Uk Limited Measurement of liquid levels by resonating gas or vapour above the liquid
US5184512A (en) * 1989-01-16 1993-02-09 Hrdlicka Armin W Measuring the length of a column of fluid in a tube
US5074148A (en) * 1990-01-05 1991-12-24 Lew Hyok S Resonance frequency liquid level sensor
US20030140695A1 (en) * 2002-01-28 2003-07-31 Josef Fehrenbach Vibratory level sensor

Also Published As

Publication number Publication date
WO2005100928A2 (en) 2005-10-27
EP1740912A2 (en) 2007-01-10

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