DK0715744T3 - Method and apparatus for preventing false responses in optical detection devices - Google Patents

Method and apparatus for preventing false responses in optical detection devices

Info

Publication number
DK0715744T3
DK0715744T3 DK94925486T DK94925486T DK0715744T3 DK 0715744 T3 DK0715744 T3 DK 0715744T3 DK 94925486 T DK94925486 T DK 94925486T DK 94925486 T DK94925486 T DK 94925486T DK 0715744 T3 DK0715744 T3 DK 0715744T3
Authority
DK
Denmark
Prior art keywords
optical detection
detection devices
preventing false
false responses
responses
Prior art date
Application number
DK94925486T
Other languages
Danish (da)
Inventor
William Joseph Senior Hirst
Original Assignee
Shell Int Research
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 Shell Int Research filed Critical Shell Int Research
Application granted granted Critical
Publication of DK0715744T3 publication Critical patent/DK0715744T3/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
DK94925486T 1993-08-31 1994-08-30 Method and apparatus for preventing false responses in optical detection devices DK0715744T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP93306865 1993-08-31
PCT/EP1994/002888 WO1995006927A1 (en) 1993-08-31 1994-08-30 Method and apparatus for preventing false responses in optical detection devices

Publications (1)

Publication Number Publication Date
DK0715744T3 true DK0715744T3 (en) 1998-08-10

Family

ID=8214523

Family Applications (1)

Application Number Title Priority Date Filing Date
DK94925486T DK0715744T3 (en) 1993-08-31 1994-08-30 Method and apparatus for preventing false responses in optical detection devices

Country Status (8)

Country Link
EP (1) EP0715744B1 (en)
AU (1) AU7537594A (en)
CA (1) CA2170519A1 (en)
DE (1) DE69407190T2 (en)
DK (1) DK0715744T3 (en)
NO (1) NO960783L (en)
SG (1) SG97742A1 (en)
WO (1) WO1995006927A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001043067A2 (en) * 1999-12-10 2001-06-14 Durand Technology Limited Improvements in or relating to applications of fractal and/or chaotic techniques
DE102009048739B3 (en) * 2009-07-14 2012-03-29 Deutsches Zentrum für Luft- und Raumfahrt e.V. Automatic forest fire detection method involves triggering alarm, if fractal dimensions of grey values of current image and cluster surface of binarized image, and respective axis intercept lie within preset value

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665390A (en) * 1985-08-22 1987-05-12 Hughes Aircraft Company Fire sensor statistical discriminator
US4866420A (en) * 1988-04-26 1989-09-12 Systron Donner Corp. Method of detecting a fire of open uncontrolled flames
US5051590A (en) * 1989-12-06 1991-09-24 Santa Barbara Research Center Fiber optic flame detection and temperature measurement system having one or more in-line temperature dependent optical filters
US5201321A (en) * 1991-02-11 1993-04-13 Fulton Keith W Method and apparatus for diagnosing vulnerability to lethal cardiac arrhythmias
US5185687A (en) * 1991-03-28 1993-02-09 Eaton Corporation Chaos sensing arc detection
JPH0535768A (en) * 1991-07-26 1993-02-12 Hitachi Ltd Information processor utilizing fractal dimension

Also Published As

Publication number Publication date
CA2170519A1 (en) 1995-03-09
WO1995006927A1 (en) 1995-03-09
SG97742A1 (en) 2003-08-20
EP0715744B1 (en) 1997-12-03
AU7537594A (en) 1995-03-22
DE69407190T2 (en) 1998-05-20
EP0715744A1 (en) 1996-06-12
DE69407190D1 (en) 1998-01-15
NO960783D0 (en) 1996-02-27
NO960783L (en) 1996-03-12

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