CA2170519A1 - Method and apparatus for preventing false responses in optical detection devices - Google Patents
Method and apparatus for preventing false responses in optical detection devicesInfo
- Publication number
- CA2170519A1 CA2170519A1 CA 2170519 CA2170519A CA2170519A1 CA 2170519 A1 CA2170519 A1 CA 2170519A1 CA 2170519 CA2170519 CA 2170519 CA 2170519 A CA2170519 A CA 2170519A CA 2170519 A1 CA2170519 A1 CA 2170519A1
- Authority
- CA
- Canada
- Prior art keywords
- signal
- source
- optical radiation
- optical
- chaotic
- 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.)
- Abandoned
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 54
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000004044 response Effects 0.000 title claims abstract description 15
- 230000005855 radiation Effects 0.000 claims abstract description 46
- 230000000739 chaotic effect Effects 0.000 claims abstract description 27
- 230000000737 periodic effect Effects 0.000 claims abstract description 10
- 230000004907 flux Effects 0.000 claims abstract description 5
- 239000000779 smoke Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 3
- 238000011896 sensitive detection Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP93306865.2 | 1993-08-31 | ||
| EP93306865 | 1993-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2170519A1 true CA2170519A1 (en) | 1995-03-09 |
Family
ID=8214523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2170519 Abandoned CA2170519A1 (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 (no) |
| AU (1) | AU7537594A (no) |
| CA (1) | CA2170519A1 (no) |
| DE (1) | DE69407190T2 (no) |
| DK (1) | DK0715744T3 (no) |
| NO (1) | NO960783L (no) |
| SG (1) | SG97742A1 (no) |
| WO (1) | WO1995006927A1 (no) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1236183A2 (en) * | 1999-12-10 | 2002-09-04 | Durand Technology Limited | Improvements in or relating to applications of fractal and/or chaotic techniques |
| DE102009048739B3 (de) * | 2009-07-14 | 2012-03-29 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren und Vorrichtung zur automatischen Waldbranderkennung |
Family Cites Families (6)
| 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 (ja) * | 1991-07-26 | 1993-02-12 | Hitachi Ltd | フラクタル次元を応用した情報処理装置 |
-
1994
- 1994-08-30 DE DE69407190T patent/DE69407190T2/de not_active Expired - Fee Related
- 1994-08-30 AU AU75375/94A patent/AU7537594A/en not_active Abandoned
- 1994-08-30 SG SG9606075A patent/SG97742A1/en unknown
- 1994-08-30 CA CA 2170519 patent/CA2170519A1/en not_active Abandoned
- 1994-08-30 EP EP94925486A patent/EP0715744B1/en not_active Expired - Lifetime
- 1994-08-30 WO PCT/EP1994/002888 patent/WO1995006927A1/en active IP Right Grant
- 1994-08-30 DK DK94925486T patent/DK0715744T3/da active
-
1996
- 1996-02-27 NO NO960783A patent/NO960783L/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO960783L (no) | 1996-03-12 |
| EP0715744B1 (en) | 1997-12-03 |
| DK0715744T3 (da) | 1998-08-10 |
| DE69407190D1 (de) | 1998-01-15 |
| EP0715744A1 (en) | 1996-06-12 |
| AU7537594A (en) | 1995-03-22 |
| WO1995006927A1 (en) | 1995-03-09 |
| SG97742A1 (en) | 2003-08-20 |
| NO960783D0 (no) | 1996-02-27 |
| DE69407190T2 (de) | 1998-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |