BR0007762A - Dispositivo piezelétrico de medição de nìvel delìquido - Google Patents

Dispositivo piezelétrico de medição de nìvel delìquido

Info

Publication number
BR0007762A
BR0007762A BR0007762-3A BR0007762A BR0007762A BR 0007762 A BR0007762 A BR 0007762A BR 0007762 A BR0007762 A BR 0007762A BR 0007762 A BR0007762 A BR 0007762A
Authority
BR
Brazil
Prior art keywords
cell
measuring device
cells
relationship
hand
Prior art date
Application number
BR0007762-3A
Other languages
English (en)
Inventor
Karim Benghezal
Karim Ouenniche
Original Assignee
Marwal Systems
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 Marwal Systems filed Critical Marwal Systems
Publication of BR0007762A publication Critical patent/BR0007762A/pt

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
    • G01F23/2962—Measuring transit time of reflected 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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

"DISPOSITIVO PIEZELéTRICO DE MEDIçãO DE NìVEL DE LìQUIDO".Dispositivo de medição de nivel de líquido, que compreende umconjunto de detecção (Si) que compreende duas célulaspiezelétricas (10,12) associadas a meios de comando para emitirondas ultra-sónicas respectivamente em referência a um refletor(16) de referência, situado a uma distância conhecida (D) da célulaassociada (12) por um lado, e à superfície superior (14) do líquidopor outro lado, e meios de tratamento próprios para determinar onível de liquido explorando para isso os tempos respectivos depropagação das ondas ultra-sónicas emitidas por cada uma dessasduas células (10,12), caracterizado pelo fato de que ele quecompreende meios próprios para definir, depois de colocação sobtensão do dispositivo, uma fase de inicialização (1100, 1100 bis)durante a qual os meios de comando comandam as célulaspiezelétricas (10,12) de modo que a relação entre o ritmo deexcitação da célula de referência (12) e o ritmo de excitação dacélula de medição de nível (10) seja superior à relação entre essesmesmos ritmos durante a fase de medição ulterior estabilizada(1300).
BR0007762-3A 1999-01-26 2000-01-25 Dispositivo piezelétrico de medição de nìvel delìquido BR0007762A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9900818A FR2788851B1 (fr) 1999-01-26 1999-01-26 Dispositif piezo-electrique de mesure de niveau de liquide
PCT/FR2000/000160 WO2000045137A1 (fr) 1999-01-26 2000-01-25 Dipositif piezo-electrique de mesure de niveau de liquide

Publications (1)

Publication Number Publication Date
BR0007762A true BR0007762A (pt) 2001-11-13

Family

ID=9541219

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0007762-3A BR0007762A (pt) 1999-01-26 2000-01-25 Dispositivo piezelétrico de medição de nìvel delìquido

Country Status (10)

Country Link
US (1) US6588269B1 (pt)
EP (1) EP1147382B1 (pt)
JP (1) JP4469088B2 (pt)
CN (1) CN1341205A (pt)
BR (1) BR0007762A (pt)
DE (1) DE60013403T2 (pt)
FR (1) FR2788851B1 (pt)
MX (1) MXPA01007530A (pt)
PL (1) PL349033A1 (pt)
WO (1) WO2000045137A1 (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6993967B2 (en) * 2002-07-12 2006-02-07 Ti Group Automotive Systems, L.L.C. Fluid level sensor
DE10350084B4 (de) * 2003-10-27 2016-05-19 Continental Automotive Gmbh Sensoreinrichtung zum Erfassen eines Füllstands und Verfahren zum Betreiben der Sensoreinrichtung
US20050281134A1 (en) * 2004-06-17 2005-12-22 Ferreira Edson L Method and apparatus for pulse-by-pulse calibration of a pulse-echo ranging system
US7421895B1 (en) 2005-04-21 2008-09-09 Caldwell Joseph W Fluid level measuring system
DE112009002673A5 (de) * 2008-09-03 2011-09-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung zur zerstörungsfreien Prüfung von Proben mittels Ultraschallwellen
US7865317B2 (en) * 2008-12-10 2011-01-04 Gm Global Technology Operations, Inc. System and method for measuring a fuel level in a vehicle fuel tank
DE102011013687B4 (de) * 2011-03-11 2014-10-09 Continental Automotive Gmbh Verfahren zur Kalibrierung eines Füllstandsensors
US9488514B2 (en) * 2013-01-15 2016-11-08 Ssi Technologies, Inc. Three-mode sensor for determining temperature, level, and concentration of a fluid
CN104614983A (zh) * 2014-12-22 2015-05-13 金川集团股份有限公司 一种大纯滞后回路的自动控制方法
KR101709056B1 (ko) 2016-06-21 2017-03-08 주식회사 코아비스 차량용 연료탱크의 액위 측정 시스템 및 그 측정 방법
US10811590B1 (en) 2016-06-23 2020-10-20 Plastipak Packaging, Inc. Containers with sensing and/or communication features
DE102019201813A1 (de) 2019-02-12 2020-08-13 Siemens Aktiengesellschaft Durchflussmesser für ein Fluid mit einer pulsierenden Strömung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753542A (en) * 1953-09-03 1956-07-03 Bogue Elec Mfg Co Calibrated apparatus for measuring liquid levels
EP0138541A1 (en) * 1983-10-06 1985-04-24 Lucas Kienzle Instruments Limited Liquid level measurement
DE59009904D1 (de) * 1989-08-22 1996-01-04 Siemens Ag Messeinrichtung und verfahren zur bestimmung des füllstandes in flüssigkeitsbehältern, vorzugsweise für tankanlagen.
US5095748A (en) * 1990-08-06 1992-03-17 Tidel Engineering, Inc. Sonic tank monitoring system
FR2751744B1 (fr) * 1996-07-26 1998-10-23 Marwal Systems Dispositif piezo-electrique de jaugeage de liquide

Also Published As

Publication number Publication date
MXPA01007530A (es) 2003-06-24
PL349033A1 (en) 2002-07-01
FR2788851A1 (fr) 2000-07-28
EP1147382B1 (fr) 2004-09-01
CN1341205A (zh) 2002-03-20
FR2788851B1 (fr) 2001-04-13
JP2002535669A (ja) 2002-10-22
EP1147382A1 (fr) 2001-10-24
DE60013403D1 (de) 2004-10-07
WO2000045137A1 (fr) 2000-08-03
DE60013403T2 (de) 2005-09-08
US6588269B1 (en) 2003-07-08
JP4469088B2 (ja) 2010-05-26

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O(S) ARTIGO(S) 8O E 13 DA LPI

B09T Decision of refusal: decision cancelled [chapter 9.2.1 patent gazette]

Free format text: ANULADA A DECISAO DE INDEFERIMENTO, REFERENTE A RPI 2107 DE 14/05/2011, POR TER SIDO INDEVIDA.

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART. 8 COMBINADO COM O ART. 13 DA LPI

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.