EP0981121A3 - Fluiddetector - Google Patents

Fluiddetector Download PDF

Info

Publication number
EP0981121A3
EP0981121A3 EP99115631A EP99115631A EP0981121A3 EP 0981121 A3 EP0981121 A3 EP 0981121A3 EP 99115631 A EP99115631 A EP 99115631A EP 99115631 A EP99115631 A EP 99115631A EP 0981121 A3 EP0981121 A3 EP 0981121A3
Authority
EP
European Patent Office
Prior art keywords
light
surface section
light source
fluiddetector
arrangement
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.)
Granted
Application number
EP99115631A
Other languages
German (de)
French (fr)
Other versions
EP0981121A2 (en
EP0981121B1 (en
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.)
Gardena Manufacturing GmbH
Original Assignee
Gardena Kress and Kastner GmbH
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 Gardena Kress and Kastner GmbH filed Critical Gardena Kress and Kastner GmbH
Publication of EP0981121A2 publication Critical patent/EP0981121A2/en
Publication of EP0981121A3 publication Critical patent/EP0981121A3/en
Application granted granted Critical
Publication of EP0981121B1 publication Critical patent/EP0981121B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
    • G08B19/02—Alarm responsive to formation or anticipated formation of ice

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Optical Measuring Cells (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Massaging Devices (AREA)

Abstract

The arrangement has at least one light conducting body (20) with at least one surface section (45) for contact with a liquid, especially precipitation, that is arranged relative to a light source (36) so that the light can be totally reflected at the surface section and at least one light detector (37) that can be positioned above the surface section in light conducting connection with the light source..
EP99115631A 1998-08-17 1999-08-07 Fluiddetector Expired - Lifetime EP0981121B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19837050 1998-08-17
DE19837050A DE19837050A1 (en) 1998-08-17 1998-08-17 Liquid detection device

Publications (3)

Publication Number Publication Date
EP0981121A2 EP0981121A2 (en) 2000-02-23
EP0981121A3 true EP0981121A3 (en) 2000-06-28
EP0981121B1 EP0981121B1 (en) 2003-11-12

Family

ID=7877637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99115631A Expired - Lifetime EP0981121B1 (en) 1998-08-17 1999-08-07 Fluiddetector

Country Status (7)

Country Link
US (1) US6365908B1 (en)
EP (1) EP0981121B1 (en)
AT (1) ATE254324T1 (en)
AU (1) AU771310B2 (en)
DE (2) DE19837050A1 (en)
ES (1) ES2210916T3 (en)
ZA (1) ZA995198B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10353241B3 (en) * 2003-11-13 2005-01-27 Wilhelm Malitsky Sensor system for detecting a liquid has a path of light in a light barrier to run across a capillary gap and to detect changes in the gap
US7605361B2 (en) * 2007-07-09 2009-10-20 Denso Corporation Fuel property detection device
US8593290B2 (en) * 2009-05-13 2013-11-26 Delaware Capital Formation, Inc. Overfill detection system for tank trucks
US8362453B2 (en) * 2010-02-24 2013-01-29 Niles Co., Ltd. Rain sensor
US20110219868A1 (en) * 2010-03-15 2011-09-15 Lane John Michael Apparatus for detecting snow depth
WO2012170743A1 (en) 2011-06-07 2012-12-13 Sentelligence, Inc. Optical sensing device for fluid sensing and methods therefor
DE102013100292A1 (en) * 2013-01-11 2014-07-24 Conti Temic Microelectronic Gmbh Illumination for detecting raindrops on a pane by means of a camera
EP3605067A4 (en) * 2017-03-27 2021-03-31 Glory Ltd. Optical sensor, light detecting device, paper sheet processing device, light detecting method, and phosphorescence detecting device
DE102018216660A1 (en) * 2018-09-27 2020-04-02 Continental Automotive Gmbh Touch sensor, sensor arrangement and display
CN112504392A (en) * 2020-11-11 2021-03-16 厦门华联电子股份有限公司 Photoelectric liquid level sensor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240988A (en) * 1938-09-20 1941-05-06 Univ Tennessce Res Corp Liquid level indicator
CH581830A5 (en) * 1975-04-25 1976-11-15 Gfeller Ag Apparate Fabrik Fla Electro-optical fluid sensor monitor for filling level of container - has light transmissive body with one end shaped as truncated cone
EP0099498A2 (en) * 1982-07-01 1984-02-01 Heinz Lang & Co. KG. Precipitation measuring device
EP0450174A1 (en) * 1990-04-05 1991-10-09 Fibronix Sensoren GmbH Device for optoelectrically measuring interfacial level and refractive index of fluids
EP0697370A1 (en) * 1994-08-04 1996-02-21 Scully Signal Company Fluid overfill protection and identification system
US5505082A (en) * 1995-02-01 1996-04-09 Cushman; Robert B. Rainfall rate gauge

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384885A (en) * 1966-02-21 1968-05-21 Gen Motors Corp Multiple liquid reservoir liquid level indicator
DE3532199A1 (en) * 1985-09-10 1987-03-12 Lorenz Dr Twisselmann Sensor for controlling the visual clarity of panes of glass
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
DE4006174C1 (en) * 1990-02-28 1991-07-25 Leopold Kostal Gmbh & Co Kg, 5880 Luedenscheid, De
DE4209680A1 (en) * 1992-03-25 1993-09-30 Bosch Gmbh Robert rain sensor
DE4343474A1 (en) * 1993-01-13 1994-07-21 Bosch Gmbh Robert Sensor device for detecting the degree of wetting and / or contamination of windows, in particular front windows of motor vehicles
US5381022A (en) * 1993-12-10 1995-01-10 Imo Industries, Inc. Combined optical waveguide and prismatic liquid-level sensor
US5534708A (en) * 1993-12-15 1996-07-09 Simmonds Precision Products Inc. Optical fuel/air/water sensor and detector circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240988A (en) * 1938-09-20 1941-05-06 Univ Tennessce Res Corp Liquid level indicator
CH581830A5 (en) * 1975-04-25 1976-11-15 Gfeller Ag Apparate Fabrik Fla Electro-optical fluid sensor monitor for filling level of container - has light transmissive body with one end shaped as truncated cone
EP0099498A2 (en) * 1982-07-01 1984-02-01 Heinz Lang & Co. KG. Precipitation measuring device
EP0450174A1 (en) * 1990-04-05 1991-10-09 Fibronix Sensoren GmbH Device for optoelectrically measuring interfacial level and refractive index of fluids
EP0697370A1 (en) * 1994-08-04 1996-02-21 Scully Signal Company Fluid overfill protection and identification system
US5505082A (en) * 1995-02-01 1996-04-09 Cushman; Robert B. Rainfall rate gauge

Also Published As

Publication number Publication date
EP0981121A2 (en) 2000-02-23
ATE254324T1 (en) 2003-11-15
DE19837050A1 (en) 2000-02-24
EP0981121B1 (en) 2003-11-12
AU771310B2 (en) 2004-03-18
ZA995198B (en) 2000-02-18
ES2210916T3 (en) 2004-07-01
DE59907693D1 (en) 2003-12-18
US6365908B1 (en) 2002-04-02
AU4454599A (en) 2000-03-09

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