EP1012805B1 - Rauchmelder - Google Patents
Rauchmelder Download PDFInfo
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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)
Description
Claims (8)
- Rauchmelder nach dem Streustrahlungsprinzip mit einem für Rauchpartikel zugänglichen Meßfeld (5) in einer Meßkammer, auf das die Strahlungsrichtung eines Strahlungssenders (6) gerichtet ist, wobei im Meßfeld (5) auftretende Steustrahlung durch einen Strahlungsempfänger (7) empfangbar ist, dadurch gekennzeichnet, daßdie Meßkammer einen Teil eines innen verspiegelten Hohlellipsoids (3) umfaßt,das Meßfeld (5) am ersten Brennpunkt (1) des Hohlellipsoids (3) angeordnet ist,der Strahlungsempfänger (7) am zweiten Brennpunkt (2) des Hohlellipsoids (3) angeordnet ist.
- Rauchmelder nach Anspruch 1, dadurch gekennzeichnet, daß das Hohlellipsoid (3) nahezu vollständig geschlossen und mit kleinen, für den Raucheintritt aber ausreichend großen Öffnungen (4) versehen ist.
- Rauchmelder nach Anspruch 1, dadurch gekennzeichnet, daß an den Kuppen um die Längsachse des Hohlellipsoids (3) herum jeweils eine Öffnung (4a) für den Raucheintritt in die Meßkammer vorgesehen ist.
- Rauchmelder nach Anspruch 1, dadurch gekennzeichnet, daß nur eine Teilschale (9) des Hohlellipsoids als Reflektor verwendet ist und die verbleibende Öffnung für den Raucheintritt in die Meßkammer dient.
- Rauchmelder nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß zur Erfassung der Rückwärtsstreuung ein erster Strahlungsempfänger (7a) und zur Erfassung der Vorwärtsstreuung ein zweiter Strahlungsempfänger (7b) vorgesehen ist.
- Rauchmelder nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß als Strahlungssender (6) eine lichtemittierende Diode vorgesehen ist.
- Rauchmelder nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß als Strahlungssender (6) ein Halbleiterlaser vorgesehen ist.
- Rauchmelder nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß als Strahlungssender (6) eine Blitzlampe vorgesehen ist.
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 (de) | 1997-09-23 | 1998-03-24 | Rauchmelder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1012805A1 EP1012805A1 (de) | 2000-06-28 |
| EP1012805B1 true EP1012805B1 (de) | 2002-06-19 |
Family
ID=7843273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98928058A Expired - Lifetime EP1012805B1 (de) | 1997-09-23 | 1998-03-24 | Rauchmelder |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6239710B1 (de) |
| EP (1) | EP1012805B1 (de) |
| JP (1) | JP2001517843A (de) |
| CN (1) | CN1111829C (de) |
| AT (1) | ATE219592T1 (de) |
| AU (1) | AU8007498A (de) |
| DE (2) | DE19741853A1 (de) |
| ES (1) | ES2178839T3 (de) |
| WO (1) | WO1999016033A1 (de) |
Families Citing this family (21)
| 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 (de) * | 2008-10-09 | 2020-06-24 | Hochiki Corporation | Rauchdetektor |
| 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 |
| DE102011108390B4 (de) | 2011-07-22 | 2019-07-11 | PPP "KB Pribor" Ltd. | Verfahren zur Herstellung eines Rauchdetektors vom offenen Typ |
| DE102011108389A1 (de) | 2011-07-22 | 2013-01-24 | PPP "KB Pribor" Ltd. | Rauchdetektor |
| 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 (de) * | 2015-08-06 | 2017-02-08 | Siemens Schweiz AG | Streulichtrauchmelder mit einer im meldergehäuse aufgenommenen optischen messkammer und mit einer spiegelfläche an einer innenseite einer melderhaube als teil des meldergehäuses |
| EP3761008B1 (de) * | 2015-12-14 | 2023-06-14 | Mitsubishi Electric Corporation | Vorrichtung zur detektion von mikroobjekten |
| 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)
| 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. |
| CA1228748A (en) * | 1983-12-24 | 1987-11-03 | Hans Oetliker | Method and apparatus for guiding and collecting light in photometry or the like |
| DE3580817D1 (de) * | 1984-08-23 | 1991-01-17 | Nohmi Bosai Kogyo Co Ltd | Photoelektrischer rauchdetektor. |
| EP0407429A4 (en) * | 1988-03-30 | 1991-08-21 | Martin Terence Cole | Fluid pollution monitor |
| CH684556A5 (de) * | 1992-09-14 | 1994-10-14 | Cerberus Ag | Optischer Rauchmelder. |
-
1997
- 1997-09-23 DE DE19741853A patent/DE19741853A1/de not_active Withdrawn
-
1998
- 1998-03-24 AU AU80074/98A patent/AU8007498A/en not_active Abandoned
- 1998-03-24 DE DE59804533T patent/DE59804533D1/de not_active Expired - Lifetime
- 1998-03-24 AT AT98928058T patent/ATE219592T1/de not_active IP Right Cessation
- 1998-03-24 CN CN98806808A patent/CN1111829C/zh not_active Expired - Fee Related
- 1998-03-24 EP EP98928058A patent/EP1012805B1/de not_active Expired - Lifetime
- 1998-03-24 US US09/445,878 patent/US6239710B1/en not_active Expired - Lifetime
- 1998-03-24 JP JP2000513256A patent/JP2001517843A/ja active Pending
- 1998-03-24 ES ES98928058T patent/ES2178839T3/es not_active Expired - Lifetime
- 1998-03-24 WO PCT/DE1998/000857 patent/WO1999016033A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US6239710B1 (en) | 2001-05-29 |
| JP2001517843A (ja) | 2001-10-09 |
| AU8007498A (en) | 1999-04-12 |
| DE19741853A1 (de) | 1999-03-25 |
| CN1111829C (zh) | 2003-06-18 |
| WO1999016033A1 (de) | 1999-04-01 |
| DE59804533D1 (de) | 2002-07-25 |
| EP1012805A1 (de) | 2000-06-28 |
| CN1261972A (zh) | 2000-08-02 |
| ATE219592T1 (de) | 2002-07-15 |
| ES2178839T3 (es) | 2003-01-01 |
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