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EP1012805B1 - Detecteur de fumee - Google Patents

Detecteur de fumee Download PDF

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Publication number
EP1012805B1
EP1012805B1 EP98928058A EP98928058A EP1012805B1 EP 1012805 B1 EP1012805 B1 EP 1012805B1 EP 98928058 A EP98928058 A EP 98928058A EP 98928058 A EP98928058 A EP 98928058A EP 1012805 B1 EP1012805 B1 EP 1012805B1
Authority
EP
European Patent Office
Prior art keywords
radiation
smoke
smoke detector
detector according
hollow ellipsoid
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 - Lifetime
Application number
EP98928058A
Other languages
German (de)
English (en)
Other versions
EP1012805A1 (fr
Inventor
Ulrich Oppelt
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1012805A1 publication Critical patent/EP1012805A1/fr
Application granted granted Critical
Publication of EP1012805B1 publication Critical patent/EP1012805B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

  • the invention is based on the genus, as in the independent Claim 1 specified.
  • Smoke detectors are generally used for early fire detection used.
  • One method is to detect smoke particles in the measurement of radiation scattered on smoke particles.
  • Such smoke detectors based on the scattered radiation principle usually use the forward scattering method, because it means bigger signals at the radiation receiver can be achieved.
  • Such a smoke detector consists of one Radiation transmitter (usually pulsed), a lens for Bundling the rays and a radiation receiver to Example of a photodiode, possibly with a lens to capture the scattering cone of the scattered radiation.
  • Radiation receivers and radiation transmitters have no direct Line of sight, but are by appropriate mechanical Measures optically separated. Between the Radiation transmission direction and the reception direction lies obtuse angle, and the scattering angle at the detected Smoke particles are also dull.
  • a disadvantage of the known methods is that only a small proportion of the scattered radiation on the radiation receiver falls while the remaining scattered radiation for the measurement is lost. Furthermore, only each one of the preferred measurement effects, forward or backward scattering, exploited.
  • WO-A-8909392 is based on the scattered radiation principle based pollution detector known, the measuring chamber from a inside mirrored tube with an elliptical cross section and where the Radiation transmitter emits along a focal point and the radiation receiver is attached to the second focal point at the end of the tube.
  • the invention allows almost all of the smoke particles Scattered radiation as a radiation receiver Feed measurement signal. This includes both the forward scattered Radiation, the backscattered radiation, as also the scattered radiation from all intermediate areas. In order to the measurement becomes more sensitive overall since there is almost no loss caused by radiation not captured.
  • Smoke detectors continue to take into account that caused by different particle diameters give rise to scattering properties.
  • a light-emitting diode can be used as the radiation transmitter Semiconductor laser or a flash lamp may be provided.
  • Figure 1 shows the basic arrangement with a by Focal points 1 and 2 of a hollow ellipsoid 3 guided Cut.
  • the hollow ellipsoid 3 is mirrored on the inside and with Provided openings 4 which are in relation to the inner surface of the Hollow ellipsoids 3 are small, for example max. 10% make up the inner surface.
  • the first focus 1 and its The immediate vicinity form the measuring field 5, where smoke particles irradiated at the same time by a radiation transmitter 6 and by a radiation receiver 7 can be detected in the focal point 2 can.
  • a radiation collector belongs to the radiation receiver 7, which is attached in the second focus 2. It the radiation receiver can also be used there instead be appropriate.
  • As a radiation collector one hemisphere lens each for the below the drawing plane or half-shell lying above the drawing plane of the hollow ellipsoid 3 serve.
  • the radiation receiver can consist of one or more photodiodes or an equivalent component.
  • the photodiodes can be arranged so that one is preferred Radiation from the backscatter and the other preferred receives the radiation from the forward scatter as in Figure 2 indicated, so the range of backward scattering through the reception angle 8 is designated. This makes it possible the scattered radiation received from the different scattering angles separated from each other in a single evaluation unit to evaluate and draw conclusions about the respective type of fire to draw that is typical of the respective particle size is. Other useful evaluations of angular ranges are possible.
  • the mirror formed by the hollow ellipsoid 3 can, as in Figure 1 shown, provided with a number of openings 4 into the measuring field 5 to penetrate.
  • the openings 4 are in terms of surface consumption small compared to the total surface, so that no significant loss in the proportion of that of the hollow ellipsoid 3 reflected radiation occurs.
  • All of the described embodiments can, as with optical Smoke detectors usual, provided with a labyrinth to prevent the entry of extraneous light into the hollow ellipsoid 3 to prevent.

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)

Claims (8)

  1. Détecteur de fumée fonctionnant selon le principe des rayons dispersés comprenant un champ de mesure (5) accessible aux particules de fumée dans une chambre de mesure, champ sur lequel on dirige la direction du rayonnement d'un émetteur de rayonnement (6), les dispersions produites dans le champ de mesure (5) étant reçues par un récepteur de rayonnement (7),
    caractérisé en ce que
    la chambre de mesure comprend une partie d'un ellipsoïde creux (3) dont la surface intérieure est réfléchissante,
    le champ de mesure (5) est prévu au premier foyer (1) de l'ellipsoïde creux (3), et
    le récepteur de rayonnement (7) est monté au deuxième foyer (2) de l'ellipsoïde (3).
  2. Détecteur de fumée sans revendication 1,
    caractérisé en ce que
    l'ellipsoïde creux (3) est fermé pratiquement complètement et ne comporte que deux petites ouvertures (4) néanmoins suffisantes pour l'entrée de la fumée.
  3. Détecteur de fumée selon la revendication 1,
    caractérisé en ce qu'
    au niveau des calottes autour de l'axe longitudinal de l'ellipsoïde creux (3) on a chaque fois une ouverture (4a) pour l'entrée de la fumée dans la chambre de mesure.
  4. Détecteur de fumée selon la revendication 1,
    caractérisé en ce que
    seulement une coquille partielle (9) de l'ellipsoïde creux est utilisée comme réflecteur et l'ouverture restante sert à l'entrée de la fumée de la chambre de mesure.
  5. Détecteur de fumée selon l'une quelconque des revendications précédentes
    caractérisé par
    un premier récepteur de rayonnement (7a) pour détecter le rayonnement dispersé en retour et un second récepteur de rayonnement (7b) pour détecter le rayonnement direct.
  6. Détecteur de fumée selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'émetteur de rayonnement (6) est une diode photo émissive.
  7. Détecteur de fumée selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    l'émetteur de rayonnement (6) est un semi-conducteur.
  8. Détecteur de fumée selon l'une des revendications 1 à 5,
    caractérisé en ce que
    l'émetteur de rayonnement (6) est une lampe flash.
EP98928058A 1997-09-23 1998-03-24 Detecteur de fumee Expired - Lifetime EP1012805B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19741853A DE19741853A1 (de) 1997-09-23 1997-09-23 Rauchmelder
DE19741853 1997-09-23
PCT/DE1998/000857 WO1999016033A1 (fr) 1997-09-23 1998-03-24 Detecteur de fumee

Publications (2)

Publication Number Publication Date
EP1012805A1 EP1012805A1 (fr) 2000-06-28
EP1012805B1 true EP1012805B1 (fr) 2002-06-19

Family

ID=7843273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98928058A Expired - Lifetime EP1012805B1 (fr) 1997-09-23 1998-03-24 Detecteur de fumee

Country Status (9)

Country Link
US (1) US6239710B1 (fr)
EP (1) EP1012805B1 (fr)
JP (1) JP2001517843A (fr)
CN (1) CN1111829C (fr)
AT (1) ATE219592T1 (fr)
AU (1) AU8007498A (fr)
DE (2) DE19741853A1 (fr)
ES (1) ES2178839T3 (fr)
WO (1) WO1999016033A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945856B4 (de) * 1999-09-24 2005-12-29 Robert Bosch Gmbh Sprinklervorrichtung mit einem Ventil für Löschflüssigkeit
US6876305B2 (en) * 1999-12-08 2005-04-05 Gentex Corporation Compact particle sensor
DE10012705B4 (de) * 2000-03-08 2006-09-14 Torsten Dipl.-Ing. Clauß Verfahren und Vorrichtung zum Früherkennen und Bekämpfen von Feuer im Innen- und Außenbereich, insbesondere Wohnbereich, von Häusern und Gebäuden
DE10060044C2 (de) * 2000-12-02 2003-01-09 Rubitec Gesellschaft Fuer Innovation & Technologie Ruhr Univ Bochum Mbh Streulichtdetektor
US7119899B2 (en) * 2003-07-23 2006-10-10 Lighthouse Worldwide Solutions, Inc Particle sensor system
DE102004001699A1 (de) * 2004-01-13 2005-08-04 Robert Bosch Gmbh Brandmelder
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
US7502110B2 (en) * 2004-07-21 2009-03-10 Lighthouse Worldwide Solutions, Inc Design for particle sensor system
US7847700B2 (en) * 2007-07-03 2010-12-07 Conforti Fred J System and method for an optical particle detector
EP2336993B1 (fr) * 2008-10-09 2020-06-24 Hochiki Corporation Détecteur de fumée
GB2484930B (en) * 2010-10-26 2017-04-26 Uh Ventures Ltd An improved low cost apparatus and method for the detection of a fluid-borne particle
KR20120071453A (ko) * 2010-12-23 2012-07-03 삼성전자주식회사 미생물 검출장치
DE102011108389A1 (de) 2011-07-22 2013-01-24 PPP "KB Pribor" Ltd. Rauchdetektor
DE102011108390B4 (de) 2011-07-22 2019-07-11 PPP "KB Pribor" Ltd. Verfahren zur Herstellung eines Rauchdetektors vom offenen Typ
FR2995640B1 (fr) * 2012-09-19 2015-03-20 Efs Sa Dispositif de mesure d’une quantite de fluide injectee par un injecteur
JP6438319B2 (ja) * 2015-02-18 2018-12-12 アズビル株式会社 粒子検出装置
JP6688966B2 (ja) 2015-07-27 2020-04-28 パナソニックＩｐマネジメント株式会社 粒子検出センサ
EP3128493A1 (fr) * 2015-08-06 2017-02-08 Siemens Schweiz AG Detecteur de fumee a ecran diffusant dote d'une chambre de mesure optique logee dans le boitier de detecteur et d'une surface reflechissante sur un cote interieur d'un capot de detecteur en tant que partie du boitier de detecteur
WO2017104533A1 (fr) 2015-12-14 2017-06-22 三菱電機株式会社 Dispositif de détection d'objet minuscule
KR102380173B1 (ko) * 2017-04-14 2022-03-29 엘지이노텍 주식회사 입자 센싱 장치
CN112213245B (zh) * 2020-11-26 2021-05-28 江西嘉德物联传感技术有限责任公司 一种基于物联网的烟雾感应报警设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357888A1 (fr) * 1976-04-01 1978-02-03 Cerberus Ag Detecteur de fumee
CH660244A5 (de) * 1983-01-11 1987-03-31 Cerberus Ag Photoelektrischer rauchdetektor und dessen verwendung.
JPS617447A (ja) * 1983-12-24 1986-01-14 イノテツク、アクチエンゲゼルシヤフト 光案内集光方法およびその装置
EP0175940B1 (fr) * 1984-08-23 1990-12-05 Nohmi Bosai Kogyo Co., Ltd. Détecteur photoélectrique de fumée
WO1989009392A1 (fr) * 1988-03-30 1989-10-05 Martin Terence Cole Moniteur de pollution de fluides
CH684556A5 (de) * 1992-09-14 1994-10-14 Cerberus Ag Optischer Rauchmelder.

Also Published As

Publication number Publication date
ATE219592T1 (de) 2002-07-15
WO1999016033A1 (fr) 1999-04-01
DE59804533D1 (de) 2002-07-25
AU8007498A (en) 1999-04-12
JP2001517843A (ja) 2001-10-09
CN1111829C (zh) 2003-06-18
EP1012805A1 (fr) 2000-06-28
US6239710B1 (en) 2001-05-29
DE19741853A1 (de) 1999-03-25
ES2178839T3 (es) 2003-01-01
CN1261972A (zh) 2000-08-02

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