FR2363787A1 - Sonde optique pour detecter le niveau d'un liquide - Google Patents
Sonde optique pour detecter le niveau d'un liquideInfo
- Publication number
- FR2363787A1 FR2363787A1 FR7726620A FR7726620A FR2363787A1 FR 2363787 A1 FR2363787 A1 FR 2363787A1 FR 7726620 A FR7726620 A FR 7726620A FR 7726620 A FR7726620 A FR 7726620A FR 2363787 A1 FR2363787 A1 FR 2363787A1
- Authority
- FR
- France
- Prior art keywords
- level
- light
- liquid
- optical probe
- detect
- 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.)
- Withdrawn
Links
- 239000007788 liquid Substances 0.000 title abstract 3
- 230000003287 optical effect Effects 0.000 title abstract 2
- 239000000523 sample Substances 0.000 abstract 3
- 238000001514 detection method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
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
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
- G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
- G01F23/2922—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms
- G01F23/2925—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means
Landscapes
- Physics & Mathematics (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 Analysing Materials By Optical Means (AREA)
Abstract
L'invention concerne une sonde optique pour détecter le niveau d'un matériau ou d'un liquide. Cette sonde comporte deux éléments de transmission de lumière 41, 42 espacés possédant chacun une face 43, 44 réfléchissant la lumière, ces faces étant orientées dans des directions opposées et disposées de façon à ce qu'en fonctionnement la lumière provenant d'une source de lumière 48 soit transmise par lesdites faces vers un détecteur de lumière 50, seulement si ledit niveau est en dessous de la sonde. Détection du niveau d'un liquide.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA260,450A CA1082053A (fr) | 1976-09-02 | 1976-09-02 | Sonde optique pour la detection d'un niveau |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2363787A1 true FR2363787A1 (fr) | 1978-03-31 |
Family
ID=4106778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7726620A Withdrawn FR2363787A1 (fr) | 1976-09-02 | 1977-09-01 | Sonde optique pour detecter le niveau d'un liquide |
Country Status (4)
Country | Link |
---|---|
US (1) | US4156149A (fr) |
CA (1) | CA1082053A (fr) |
FR (1) | FR2363787A1 (fr) |
GB (1) | GB1550073A (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0148188A1 (fr) * | 1983-07-01 | 1985-07-17 | BAXTER INTERNATIONAL INC. (a Delaware corporation) | Dispositifs mouillables fonctionnant avec des liquides aqueux |
WO1989003978A1 (fr) * | 1988-03-22 | 1989-05-05 | Conax Buffalo Corporation | Detecteur de niveau de liquide de type optique |
US5054319A (en) * | 1990-09-12 | 1991-10-08 | Fling John J | Liquid level sensor and method |
US6057772A (en) * | 1997-11-13 | 2000-05-02 | Henny Penny Corporation | Apparatus and method for optically sensing liquid level in cooking vessels |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2804881C3 (de) * | 1978-02-04 | 1980-08-07 | Fa. Carl Zeiss, 7920 Heidenheim | Gerät zur automatischen Analyse von flüssigen Proben |
US4254316A (en) * | 1979-08-30 | 1981-03-03 | Clark Control, Inc. | Electrical switching apparatus |
US4274705A (en) * | 1979-09-24 | 1981-06-23 | The Boeing Company | Fiberoptic-fed fluid level sensor using a hemiellipsoidal optical element |
US4503994A (en) * | 1979-10-01 | 1985-03-12 | Chevron Research Company | Fiber optic fuel shutoff system |
US4303601A (en) * | 1980-03-31 | 1981-12-01 | Baxter Travenol Laboratories, Inc. | Ventilator humidifier |
US4499852A (en) * | 1980-07-15 | 1985-02-19 | Shipley Company Inc. | Apparatus for regulating plating solution in a plating bath |
US4353252A (en) * | 1980-10-23 | 1982-10-12 | Cadbury Schweppes Plc | Liquid level sensor |
EP0074976A1 (fr) * | 1981-03-31 | 1983-03-30 | Commonwealth Scientific And Industrial Research Organisation | Application de sondes a fibres optiques |
US4396353A (en) * | 1981-04-13 | 1983-08-02 | Flint & Walling, Inc. | Submersible sump pump |
US4440022A (en) * | 1981-10-14 | 1984-04-03 | Smiths Industries Public Limited Company | Liquid-level detection |
DE3323365C2 (de) * | 1982-09-04 | 1994-10-20 | Gsf Forschungszentrum Umwelt | Verfahren und Vorrichtung zur Ausleuchtung von Hohlräumen |
DE3247192C2 (de) * | 1982-12-21 | 1987-03-26 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Faseroptische Flüssigkeitsstandsmeßvorrichtung |
GB8310096D0 (en) * | 1983-04-14 | 1983-05-18 | Chiltern Glass Fibres Ltd | Control of liquid stock |
GB2138947B (en) * | 1983-04-14 | 1986-10-08 | Chiltern Glass Fibres Limited | Improvements in or relating to a method of control of liquid stock |
GB2159620A (en) * | 1984-05-29 | 1985-12-04 | Norman Barrie Jones | Photoelectric pressure transducer without elastic diaphragm |
US4639594A (en) * | 1984-12-17 | 1987-01-27 | Carrier Corporation | Fiberoptic probe and method of making and using |
US4689484A (en) * | 1985-05-17 | 1987-08-25 | Mcmahon Robert L | Photoelectric leak detection system for double-walled tanks and the like |
DE3614130A1 (de) * | 1986-04-25 | 1987-10-29 | Spinner Gmbh Elektrotech | Fluessigkeitspegelfuehler |
US4867872A (en) * | 1986-07-28 | 1989-09-19 | Protectaire Systems Co. | Automatically adjustable weir and environmentally protected sensor |
DE3716538A1 (de) * | 1987-05-16 | 1988-12-08 | Timm Elektronik Gmbh | Anordnung zur erfassung eines fluessigkeitsfuellstandes |
WO1988009493A1 (fr) * | 1987-05-29 | 1988-12-01 | Godfrey Howden Proprietary Limited | Appareil d'analyse de liquide |
US4935621A (en) * | 1987-10-30 | 1990-06-19 | Pikulski Joseph L | Optical switch with collimating lenses, antifreeze and/or index matching fluid for control of electrical equipment |
US4954724A (en) * | 1988-04-06 | 1990-09-04 | Koda Hideo H | Optical fuel gauge for vehicles |
US4877066A (en) * | 1988-08-31 | 1989-10-31 | Mazda Motor Manufacturing (Usa) Corporation | Apparatus for filling transmission fluid into transmissions |
US4950885A (en) * | 1989-05-08 | 1990-08-21 | I.V.P. Co. | Fluid coupled fiber optic sensor |
US4979797A (en) * | 1989-10-06 | 1990-12-25 | Imo Industries, Inc. | Multi-level fiber-optic liquid-level sensing system |
US5075543A (en) * | 1990-05-29 | 1991-12-24 | Xerox Corporation | Light weight paper sensor using fibers |
US5073720A (en) * | 1990-07-30 | 1991-12-17 | The United States Of America As Represented By The Secretary Of The Navy | Liquid level and volume measurement device |
US5186017A (en) * | 1990-09-10 | 1993-02-16 | K-Whit Tools, Inc. | Refrigerant recovery device |
US5200615A (en) * | 1991-06-25 | 1993-04-06 | Joram Hopenfeld | Method and apparatus for detecting the presence of fluids |
US5187366A (en) * | 1991-06-25 | 1993-02-16 | Joram Hopenfeld | Sensors for detecting leaks |
US5362971A (en) * | 1993-03-10 | 1994-11-08 | Terrascope Systems, Inc. | Fiber optic detection system |
US5425624A (en) * | 1993-10-22 | 1995-06-20 | Itt Corporation | Optical fluid-level switch and controls for bilge pump apparatus |
US5712934A (en) * | 1996-07-25 | 1998-01-27 | Johnson; Douglas M. | Fiber optic infrared sensor |
US5984892A (en) * | 1996-09-16 | 1999-11-16 | Minnesota Mining And Manufacturing Company | Blood aspirator |
DE19646410C2 (de) * | 1996-11-11 | 1999-05-27 | Herbert Bock | Absaugvorrichtung und Verfahren zum Ein- und Ausschalten einer Absaugpumpe |
US5785100A (en) * | 1997-02-14 | 1998-07-28 | Vickers, Incorporated | Liquid level detection system |
US6173609B1 (en) * | 1997-06-20 | 2001-01-16 | Optical Sensor Consultants, Inc. | Optical level sensor |
US7234830B1 (en) * | 2005-10-03 | 2007-06-26 | Cox Research & Technology, Inc. | Optical switch |
ITRE20070048A1 (it) * | 2007-04-04 | 2008-10-05 | Ufi Innovation Ct Srl | '' rilevatore di livello e metodo per rilevare il livello di un fluido in un recipiente'' |
US7902989B2 (en) * | 2007-05-31 | 2011-03-08 | Cox Raleigh L | Optical switch |
IL187597A0 (en) * | 2007-11-22 | 2008-03-20 | Dekel Tzidon | Fluid level indicator |
US8334501B1 (en) | 2008-10-16 | 2012-12-18 | Cox Christopher E | Optical switch activator with glowable member |
US8633623B2 (en) * | 2009-08-18 | 2014-01-21 | Xylem IP Holdings LLC. | Encapsulated submersible pump |
US8643498B1 (en) | 2010-07-13 | 2014-02-04 | Christopher E. Cox | Optical switches for tank environments |
WO2014092734A1 (fr) | 2012-12-14 | 2014-06-19 | Cox Christopher E | Activateur de commutateur optique |
JP6587346B2 (ja) * | 2015-10-14 | 2019-10-09 | 鹿島建設株式会社 | 空洞充填検知装置 |
US10840045B1 (en) | 2019-06-04 | 2020-11-17 | Christopher E. Cox | Invertible optical float switch |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB906609A (en) * | 1959-11-20 | 1962-09-26 | Nat Res Dev | Improvements in or relating to photo-electric materials testing equipment |
FR1542941A (fr) * | 1967-07-22 | 1968-10-18 | Bosch Hausgeraete Gmbh | Dispositif optique indicateur de niveau de remplissage de récipients à liquides |
FR1593760A (fr) * | 1967-11-30 | 1970-06-01 | ||
CH559898A5 (en) * | 1974-01-23 | 1975-03-14 | Glutz Blotzheim Nachfolger Ag | Electro-optical sonde preventing tank overflow - has two parallel rods, each with diagonal surface at lower extremity |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2892378A (en) * | 1955-04-26 | 1959-06-30 | Gen Electric | Indicating turbidimeter |
US3120125A (en) * | 1960-08-03 | 1964-02-04 | American Pyrotector Inc | Liquid level determining devices and method |
US3895235A (en) * | 1974-03-18 | 1975-07-15 | Illinois Tool Works | Liquid level and specific gravity indicator |
US4082959A (en) * | 1975-06-27 | 1978-04-04 | Nippondenso Co., Ltd. | Liquid level detector |
-
1976
- 1976-09-02 CA CA260,450A patent/CA1082053A/fr not_active Expired
-
1977
- 1977-08-25 US US05/827,492 patent/US4156149A/en not_active Expired - Lifetime
- 1977-09-01 GB GB36481/77A patent/GB1550073A/en not_active Expired
- 1977-09-01 FR FR7726620A patent/FR2363787A1/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB906609A (en) * | 1959-11-20 | 1962-09-26 | Nat Res Dev | Improvements in or relating to photo-electric materials testing equipment |
FR1542941A (fr) * | 1967-07-22 | 1968-10-18 | Bosch Hausgeraete Gmbh | Dispositif optique indicateur de niveau de remplissage de récipients à liquides |
FR1593760A (fr) * | 1967-11-30 | 1970-06-01 | ||
CH559898A5 (en) * | 1974-01-23 | 1975-03-14 | Glutz Blotzheim Nachfolger Ag | Electro-optical sonde preventing tank overflow - has two parallel rods, each with diagonal surface at lower extremity |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0148188A1 (fr) * | 1983-07-01 | 1985-07-17 | BAXTER INTERNATIONAL INC. (a Delaware corporation) | Dispositifs mouillables fonctionnant avec des liquides aqueux |
EP0148188A4 (fr) * | 1983-07-01 | 1987-06-16 | Baxter Travenol Lab | Dispositifs mouillables fonctionnant avec des liquides aqueux. |
WO1989003978A1 (fr) * | 1988-03-22 | 1989-05-05 | Conax Buffalo Corporation | Detecteur de niveau de liquide de type optique |
US4998022A (en) * | 1988-03-22 | 1991-03-05 | Conax Buffalo Corporation | Optical liquid level sensor using a polytetrafluoroethylene perfluoroalkoxy material |
US5054319A (en) * | 1990-09-12 | 1991-10-08 | Fling John J | Liquid level sensor and method |
US6057772A (en) * | 1997-11-13 | 2000-05-02 | Henny Penny Corporation | Apparatus and method for optically sensing liquid level in cooking vessels |
Also Published As
Publication number | Publication date |
---|---|
CA1082053A (fr) | 1980-07-22 |
GB1550073A (en) | 1979-08-08 |
US4156149A (en) | 1979-05-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Withdrawal of published application |