EP1194908A1 - Detecteur de fumee photoelectrique a longueur d'onde ultracourte - Google Patents

Detecteur de fumee photoelectrique a longueur d'onde ultracourte

Info

Publication number
EP1194908A1
EP1194908A1 EP00914824A EP00914824A EP1194908A1 EP 1194908 A1 EP1194908 A1 EP 1194908A1 EP 00914824 A EP00914824 A EP 00914824A EP 00914824 A EP00914824 A EP 00914824A EP 1194908 A1 EP1194908 A1 EP 1194908A1
Authority
EP
European Patent Office
Prior art keywords
detector
radiant energy
wavelength
housing
emitter
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.)
Withdrawn
Application number
EP00914824A
Other languages
German (de)
English (en)
Other versions
EP1194908A4 (fr
Inventor
Kenneth L. Venzant
Mark A. Watson
Derek Scott Johnston
Floyd E. Brooks
Edward C. Duran
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.)
BRK Brands Inc
Original Assignee
BRK Brands 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 BRK Brands Inc filed Critical BRK Brands Inc
Publication of EP1194908A1 publication Critical patent/EP1194908A1/fr
Publication of EP1194908A4 publication Critical patent/EP1194908A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Definitions

  • Heat detectors respond to rising ambient temperatures. Photoelectric detectors are based on light scattering or light obscuration. Ionization detectors incorporate a radioactive source which ionizes the air in the vicinity of an electrode. Ions generated attached to airborne smoke aerosols which in turn reduces the ionization current. This reduction triggers an alarm at a predetermined threshold.
  • the chamber 10' includes a first emitter 60 which could emit radiant energy in the ultraviolet wavelengths discussed above. Those wavelengths can be shortened by directing the emitted radiant energy through a non-linear optical crystalline material 62 of a type discussed previously.
  • the short wavelength radiant energy 60" is in turn projected into scattering region 66. Scattered short wavelength energy is in turn sensed at detector 68.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

On décrit un détecteur de fumée photoélectrique, qui comprend un émetteur d'énergie rayonnante à longueur d'onde courte (14). L'émetteur, une diode DEL ou laser, émet des fréquences de l'ordre de 430 à 450 nanomètres. Les fréquences émises peuvent être réduites encore par une réorientation qui les précipite sur un matériau cristallin non linéaire (22). L'énergie rayonnante émise à partir du matériau présente une longueur d'onde de l'ordre de soixante pour cent de l'énergie rayonnante incidente (14'). L'énergie à longueur d'onde courte est diffusée par une matière particulaire aéroportée caractéristique des feux flambants relativement rapides. L'émetteur, une diode LED ou laser, présente une longueur d'onde de 880 ou 940 nm couplée à des plages de longueur d'onde plus courtes (190-450 nm) avec détection associée. Il peut également détecter des feux couvants à combustion lente. Un circuit de commande et un dispositif de sortie audible produisent une alarme sonore locale lorsqu'ils détectent un feu.
EP00914824A 1999-03-05 2000-03-03 Detecteur de fumee photoelectrique a longueur d'onde ultracourte Withdrawn EP1194908A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12298199P 1999-03-05 1999-03-05
US122981P 1999-03-05
PCT/US2000/005734 WO2001095279A1 (fr) 1999-03-05 2000-03-03 Detecteur de fumee photoelectrique a longueur d'onde ultracourte

Publications (2)

Publication Number Publication Date
EP1194908A1 true EP1194908A1 (fr) 2002-04-10
EP1194908A4 EP1194908A4 (fr) 2004-10-13

Family

ID=22406036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00914824A Withdrawn EP1194908A4 (fr) 1999-03-05 2000-03-03 Detecteur de fumee photoelectrique a longueur d'onde ultracourte

Country Status (2)

Country Link
EP (1) EP1194908A4 (fr)
WO (1) WO2001095279A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113888848A (zh) * 2020-07-02 2022-01-04 霍尼韦尔国际公司 自校准火灾感测设备

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100394456C (zh) * 2004-04-06 2008-06-11 诺瓦尔有限公司 火灾识别方法及实施该方法的火灾报警器
WO2016028996A1 (fr) * 2014-08-20 2016-02-25 Research Triangle Institute Dispositifs, systèmes et procédés de détection de particules
US9915600B2 (en) 2016-02-19 2018-03-13 Research Triangle Institute Devices, systems and methods for detecting particles
DE102014014797A1 (de) * 2014-10-10 2015-09-17 Apparatebau Gauting Gmbh Streustrahlungsbrandmelder
KR102638997B1 (ko) * 2017-12-15 2024-02-20 아나로그 디바이시즈 인코포레이티드 소형의 광학적 연기 검출기 시스템 및 장치
US10809173B2 (en) * 2017-12-15 2020-10-20 Analog Devices, Inc. Smoke detector chamber boundary surfaces
US11788942B2 (en) 2017-12-15 2023-10-17 Analog Devices, Inc. Compact optical smoke detector system and apparatus
US10921367B2 (en) 2019-03-06 2021-02-16 Analog Devices, Inc. Stable measurement of sensors methods and systems
US11047787B2 (en) 2019-04-29 2021-06-29 Research Triangle Institute And method for optical bench for detecting particles
US11796445B2 (en) 2019-05-15 2023-10-24 Analog Devices, Inc. Optical improvements to compact smoke detectors, systems and apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5741595A (en) * 1995-11-17 1998-04-21 Sony Corporation Ultraviolet optical part having coat of ultraviolet optical thin film, and wavelength-changing device and ultraviolet light source unit having coat of ultraviolet optical thin film

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982130A (en) * 1975-10-10 1976-09-21 The United States Of America As Represented By The Secretary Of The Air Force Ultraviolet wavelength smoke detector
JPS6013449U (ja) * 1983-03-31 1985-01-29 ホーチキ株式会社 散乱光式煙感知器の検煙部構造
US4616928A (en) * 1984-06-20 1986-10-14 Kidde, Inc. Photoelectric smoke detector with adjustable background signal
CH683464A5 (de) * 1991-09-06 1994-03-15 Cerberus Ag Optischer Rauchmelder mit aktiver Ueberwachung.
GB2259763B (en) * 1991-09-20 1995-05-31 Hochiki Co Fire alarm system
GB2270157B (en) * 1992-08-28 1996-07-24 Hochiki Co Light scattering type smoke detector
CH684556A5 (de) * 1992-09-14 1994-10-14 Cerberus Ag Optischer Rauchmelder.
US5576697A (en) * 1993-04-30 1996-11-19 Hochiki Kabushiki Kaisha Fire alarm system
US5767776A (en) * 1996-01-29 1998-06-16 Engelhard Sensor Technologies, Inc. Fire detector
US5552765A (en) * 1993-07-12 1996-09-03 Detection Systems, Inc. Smoke detector with individually stored range of acceptable sensitivity
US5781291A (en) * 1996-10-22 1998-07-14 Pittway Corporation Smoke detectors utilizing a hydrophilic substance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5741595A (en) * 1995-11-17 1998-04-21 Sony Corporation Ultraviolet optical part having coat of ultraviolet optical thin film, and wavelength-changing device and ultraviolet light source unit having coat of ultraviolet optical thin film

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GOODMAN D S: "METHOD FOR LOCALIZING LIGHT-SCATTERED PARTICLES" IBM TECHNICAL DISCLOSURE BULLETIN, IBM CORP. NEW YORK, US, vol. 27, no. 5, 1 October 1984 (1984-10-01), page 3164, XP002066860 ISSN: 0018-8689 *
See also references of WO0195279A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113888848A (zh) * 2020-07-02 2022-01-04 霍尼韦尔国际公司 自校准火灾感测设备
CN113888848B (zh) * 2020-07-02 2022-12-20 霍尼韦尔国际公司 自校准火灾感测设备
US11688276B2 (en) 2020-07-02 2023-06-27 Honeywell International Inc. Self-calibrating fire sensing device

Also Published As

Publication number Publication date
EP1194908A4 (fr) 2004-10-13
WO2001095279A1 (fr) 2001-12-13

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