DE69916249D1 - Verfahren zur wasserdetektion an einer oberfläche - Google Patents

Verfahren zur wasserdetektion an einer oberfläche

Info

Publication number
DE69916249D1
DE69916249D1 DE69916249T DE69916249T DE69916249D1 DE 69916249 D1 DE69916249 D1 DE 69916249D1 DE 69916249 T DE69916249 T DE 69916249T DE 69916249 T DE69916249 T DE 69916249T DE 69916249 D1 DE69916249 D1 DE 69916249D1
Authority
DE
Germany
Prior art keywords
infra
wavelength
red
water
optical filter
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
DE69916249T
Other languages
English (en)
Other versions
DE69916249T2 (de
Inventor
Charles Murray
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.)
Lattice Intellectual Property Ltd
Original Assignee
Lattice Intellectual Property Ltd
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 Lattice Intellectual Property Ltd filed Critical Lattice Intellectual Property Ltd
Application granted granted Critical
Publication of DE69916249D1 publication Critical patent/DE69916249D1/de
Publication of DE69916249T2 publication Critical patent/DE69916249T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • G01J3/427—Dual wavelengths spectrometry

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
DE69916249T 1998-02-06 1999-01-19 Verfahren zur wasserdetektion an einer oberfläche Expired - Fee Related DE69916249T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9802473 1998-02-06
GBGB9802473.0A GB9802473D0 (en) 1998-02-06 1998-02-06 Method and apparatus to detect the presence of water on a surface
PCT/GB1999/000165 WO1999040412A1 (en) 1998-02-06 1999-01-19 Method and apparatus to detect the presence of water on a surface

Publications (2)

Publication Number Publication Date
DE69916249D1 true DE69916249D1 (de) 2004-05-13
DE69916249T2 DE69916249T2 (de) 2005-04-14

Family

ID=10826521

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69916249T Expired - Fee Related DE69916249T2 (de) 1998-02-06 1999-01-19 Verfahren zur wasserdetektion an einer oberfläche

Country Status (10)

Country Link
US (1) US6680479B1 (de)
EP (1) EP1055113B1 (de)
JP (1) JP2002502965A (de)
AT (1) ATE263966T1 (de)
AU (1) AU744111B2 (de)
CA (1) CA2318793A1 (de)
DE (1) DE69916249T2 (de)
DK (1) DK1055113T3 (de)
GB (1) GB9802473D0 (de)
WO (1) WO1999040412A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602004009422T2 (de) * 2003-03-14 2008-07-24 Liwas Aps Einrichtung zur detektion eines strassenoberflächenzustands
EP1700100A1 (de) * 2003-12-22 2006-09-13 Koninklijke Philips Electronics N.V. Optisches analysesystem, blutanalysesystem und verfahren zur bestimmung einer amplitude eines hauptbestandteils
US20060267758A1 (en) * 2005-02-18 2006-11-30 Barth R T System and method for detection of a variety of alarm conditions
EP3044551B1 (de) * 2013-09-10 2020-03-18 Eaton Corporation Elektro-optischer flüssigkeitssensor der prüfung in flüssigkeit erlaubt
US10620032B2 (en) 2013-09-10 2020-04-14 Eaton Intelligent Power Limited Electro-optic liquid sensor with the use of reflected residual light to enable a test of the sensor
US20170294099A1 (en) * 2016-04-07 2017-10-12 Tyco Fire & Security Gmbh Method for detecting floods and spills using lifi
US11703458B2 (en) * 2020-12-06 2023-07-18 Pixart Imaging Inc. Detecting device and automatic cleaner

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885091A (en) * 1973-10-24 1975-05-20 Halliburton Co Method and apparatus for pipeline inspection
GB2008745A (en) * 1977-11-03 1979-06-06 Anacon Instr Ltd Spectrophotometer
US4274091A (en) * 1978-03-09 1981-06-16 Decker Peter W Road surface ice detector and method for vehicles
GB2122768A (en) * 1982-06-18 1984-01-18 Infrared Eng Calibration standard for infrared absorption gauge
SE8406065D0 (sv) * 1984-11-30 1984-11-30 Lennart Wettervik Metod for sokning och kartleggning av inleckande vatten i spillvattenledningar
JPH03115838A (ja) * 1989-09-29 1991-05-16 Kawasaki Steel Corp 赤外線による水分測定方法
JPH09311029A (ja) * 1996-05-24 1997-12-02 Mitsubishi Heavy Ind Ltd トンネル壁面の剥離検出装置
GB9624035D0 (en) * 1996-11-19 1997-01-08 Infrared Eng Infrared measuring gauge
US6102617A (en) * 1998-01-13 2000-08-15 Vivian A. Hampton Impoundment leak detection, location, and containment system and method with mobile sensor

Also Published As

Publication number Publication date
CA2318793A1 (en) 1999-08-12
AU744111B2 (en) 2002-02-14
DK1055113T3 (da) 2004-07-26
JP2002502965A (ja) 2002-01-29
AU2174699A (en) 1999-08-23
EP1055113A1 (de) 2000-11-29
EP1055113B1 (de) 2004-04-07
WO1999040412A1 (en) 1999-08-12
ATE263966T1 (de) 2004-04-15
US6680479B1 (en) 2004-01-20
DE69916249T2 (de) 2005-04-14
GB9802473D0 (en) 1998-04-01

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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