DE69432948D1 - Optischer Flüssigkeitspegelfühler und Diskriminator - Google Patents

Optischer Flüssigkeitspegelfühler und Diskriminator

Info

Publication number
DE69432948D1
DE69432948D1 DE69432948T DE69432948T DE69432948D1 DE 69432948 D1 DE69432948 D1 DE 69432948D1 DE 69432948 T DE69432948 T DE 69432948T DE 69432948 T DE69432948 T DE 69432948T DE 69432948 D1 DE69432948 D1 DE 69432948D1
Authority
DE
Germany
Prior art keywords
discriminator
liquid level
level sensor
optical liquid
optical
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.)
Expired - Fee Related
Application number
DE69432948T
Other languages
English (en)
Other versions
DE69432948T2 (de
Inventor
Sylvester Michael Ellinger
Bruce Robert Kline
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Simmonds Precision Products Inc
Original Assignee
Simmonds Precision Products Inc
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 Simmonds Precision Products Inc filed Critical Simmonds Precision Products Inc
Publication of DE69432948D1 publication Critical patent/DE69432948D1/de
Application granted granted Critical
Publication of DE69432948T2 publication Critical patent/DE69432948T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G01F23/284—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
    • G01F23/2927—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means for several discrete levels, e.g. with more than one light-conducting sensing element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle
    • G01N21/431—Dip refractometers, e.g. using optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; Viscous liquids; Paints; Inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2835—Specific substances contained in the oils or fuels
    • G01N33/2847—Water in oils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle
    • G01N2021/434—Dipping block in contact with sample, e.g. prism
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S250/00—Radiant energy
    • Y10S250/90—Optical liquid level sensors
    • Y10S250/901—Optical liquid level sensors with gap between light guide elements, includes open light path preset
    • Y10S250/902—Optical liquid level sensors with gap between light guide elements, includes open light path preset with closed light path preset
    • Y10S250/903—Optical liquid level sensors with gap between light guide elements, includes open light path preset with closed light path preset with prism contacting liquid

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Food Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Medicinal Chemistry (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
DE69432948T 1993-12-15 1994-12-15 Optischer Flüssigkeitspegelfühler und Diskriminator Expired - Fee Related DE69432948T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/167,742 US5534708A (en) 1993-12-15 1993-12-15 Optical fuel/air/water sensor and detector circuit
US167742 1993-12-15

Publications (2)

Publication Number Publication Date
DE69432948D1 true DE69432948D1 (de) 2003-08-21
DE69432948T2 DE69432948T2 (de) 2004-04-22

Family

ID=22608630

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69432948T Expired - Fee Related DE69432948T2 (de) 1993-12-15 1994-12-15 Optischer Flüssigkeitspegelfühler und Diskriminator

Country Status (4)

Country Link
US (1) US5534708A (de)
EP (1) EP0658749B1 (de)
CA (1) CA2138235C (de)
DE (1) DE69432948T2 (de)

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JP3382739B2 (ja) * 1994-11-14 2003-03-04 オリンパス光学工業株式会社 水中撮影可能なカメラ
US6448573B1 (en) 1996-02-09 2002-09-10 Scully Signal Company Fluoropolymer fluid overfill probe with infrared optical signal
CA2199927A1 (en) * 1996-03-13 1997-09-13 Simmonds Precision Products, Inc. Self testing optical liquid level sensor
DE19646410C2 (de) * 1996-11-11 1999-05-27 Herbert Bock Absaugvorrichtung und Verfahren zum Ein- und Ausschalten einer Absaugpumpe
US6057772A (en) * 1997-11-13 2000-05-02 Henny Penny Corporation Apparatus and method for optically sensing liquid level in cooking vessels
US5942269A (en) * 1997-12-19 1999-08-24 Henny Penny Corporation Method for manipulating cooking medium during cooking operations
DE19837050A1 (de) * 1998-08-17 2000-02-24 Gardena Kress & Kastner Gmbh Flüssigkeitsmeldeeinrichtung
FR2807471B1 (fr) * 2000-04-07 2002-07-12 Peugeot Citroen Automobiles Sa Systeme d'aide a la regeneration d'un filtre a particules integre dans une ligne d'echappement d'un moteur diesel de vehicule automobile
US6659976B2 (en) 2001-04-16 2003-12-09 Zevek, Inc. Feeding set adaptor
US6531708B1 (en) 2001-04-16 2003-03-11 Zevex, Inc. Optical bubble detection system
US7339657B2 (en) * 2001-10-11 2008-03-04 Sentelligence, Inc. Low-cost on-line and in-line spectral sensors based on solid-state source and detectors combinations for monitoring lubricants and functional fluids
DE10206824B4 (de) * 2002-02-18 2005-04-28 Kautex Textron Gmbh & Co Kg Verfahren zur optischen Füllstandsbestimmung in flüssigkeitsgefüllten Behältern
DE10215818A1 (de) * 2002-04-10 2003-10-30 Endress & Hauser Wetzer Gmbh Vorrichtung zur Erkennung eines vorgegebenen Füllstands eines Mediums in einem Behälter
US6668645B1 (en) 2002-06-18 2003-12-30 Ti Group Automotive Systems, L.L.C. Optical fuel level sensor
US6758084B2 (en) * 2002-10-24 2004-07-06 Simmonds Precision Products, Inc. Method and apparatus for detecting a dry/wet state of a thermistor bead
US6644103B1 (en) * 2002-10-24 2003-11-11 Simmonds Precision Products, Inc. Method and apparatus for detecting a dry/wet state of a thermistor bead
US6662650B1 (en) * 2002-12-09 2003-12-16 Simmonds Precision Products, Inc. Method and apparatus for detecting a dry/wet state of a dual exposed thermistor bead liquid level sensor
US7459713B2 (en) * 2003-08-14 2008-12-02 Microptix Technologies, Llc Integrated sensing system approach for handheld spectral measurements having a disposable sample handling apparatus
US7109513B2 (en) * 2003-12-30 2006-09-19 Fuji Xerox Co., Ltd. Use of wicking means to manage fluids on optical level sensing systems
US7109512B2 (en) * 2004-04-22 2006-09-19 Opti Sensor Systems, Llc Optical transducer for detecting liquid level and electrical circuit therefor
US7259383B2 (en) * 2004-04-22 2007-08-21 Opti Sensor Systems, Llc Optical transducer for detecting liquid level
ATE552580T1 (de) * 2005-02-04 2012-04-15 Davco Technology L L C Vorrichtung und verfahren zur bestimmung eines flüssigkeitsstandes in einem verschlossenen behälter
US7786457B2 (en) * 2006-06-28 2010-08-31 Alcon, Inc. Systems and methods of non-invasive level sensing for a surgical cassette
US20080103445A1 (en) * 2006-09-29 2008-05-01 Blaine David H Method and Apparatus for Detecting Air Bubbles
US7726174B2 (en) 2006-10-24 2010-06-01 Zevex, Inc. Universal air bubble detector
AU2008206281B2 (en) 2007-01-16 2013-06-27 Chevron U.S.A. Inc. Automated fuel quality detection and dispenser control system and method, particularly for aviation fueling applications
BRPI0703260B1 (pt) * 2007-08-06 2018-11-21 Universidade Estadual De Campinas - Unicamp sistema de sensoriamento óptico para combustíveis líquidos
WO2009029533A1 (en) * 2007-08-24 2009-03-05 Zevex, Inc. Ultrasonic air and fluid detector
US8303613B2 (en) * 2007-12-07 2012-11-06 Zevex, Inc. Ultrasonic instrument using langevin type transducers to create transverse motion
GB2479696B (en) 2009-02-06 2013-01-30 Zevex Inc Air bubble detector
US8362432B2 (en) * 2009-02-06 2013-01-29 Hydro-Photon, Inc. Optical liquid sensor
IT1398388B1 (it) * 2009-03-26 2013-02-22 Elbi Int Spa Apparecchio rilevatore destinato a rilevare il livello di una sostanza liquida, in gel o in polvere contenuta in un recipiente
US8593290B2 (en) * 2009-05-13 2013-11-26 Delaware Capital Formation, Inc. Overfill detection system for tank trucks
WO2012030595A2 (en) 2010-08-30 2012-03-08 Alcon Research, Ltd. Optical sensing system including electronically switched optical magnification
US20120138824A1 (en) * 2010-12-03 2012-06-07 Fang Wen Continuous liquid level sensor having multiple light sources and light receiving devices
US20130135608A1 (en) * 2011-11-30 2013-05-30 Reflectronics, Inc. Apparatus and method for improved processing of food products
GB2544923B (en) 2012-06-27 2017-09-20 Oxsensis Ltd Optical sensor
EP3514108B1 (de) * 2012-11-08 2022-11-02 Knappco LLC Systeme zur kontrolle von kreuzkontamination mit flüssigprodukt-id-sensoren
US9530290B2 (en) 2013-01-18 2016-12-27 Fuel Guard Systems Corporation Apparatuses and methods for providing visual indication of dynamic process fuel quality delivery conditions with use of multiple colored indicator lights
WO2015009592A1 (en) * 2013-07-18 2015-01-22 Corning Incorporated Solar concentrator with microreflectors
US9435665B2 (en) * 2014-02-07 2016-09-06 Aclara Meters Llc System and method for tamper detection in a utility meter
EP3050808B1 (de) 2015-01-29 2019-08-28 Ray Hutchinson Automatische wasser- und teilchenerkennung zur verteilung von kraftstoff, einschliesslich flugkraftstoff, und zugehörige vorrichtungen, systeme und verfahren
DE102015016775A1 (de) * 2015-12-23 2017-06-29 Audi Ag Verfahren zum Betreiben einer Sensoranordnung für einen Fluidtank eines Kraftfahrzeugs sowie entsprechende Sensoranordnung
US10175167B2 (en) * 2017-03-28 2019-01-08 Te Connectivity Corporation Optical sensor for detecting accumulation of a material
US11268844B2 (en) 2018-10-16 2022-03-08 Eaton Intelligent Power Limited Continuous electro-optic fluid level sensor comprising plural light detectors oppositely disposed at the second end portion of a body
US20230236058A1 (en) * 2022-01-21 2023-07-27 Eaton Intelligent Power Limited Methods and systems for testing electro optic sensors

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Also Published As

Publication number Publication date
EP0658749A2 (de) 1995-06-21
EP0658749A3 (de) 1996-07-03
EP0658749B1 (de) 2003-07-16
DE69432948T2 (de) 2004-04-22
CA2138235C (en) 2004-08-10
CA2138235A1 (en) 1995-06-16
US5534708A (en) 1996-07-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee