EP2423895A3 - Light scattering smoke alarm with means of suppressing an acoustic warning if battery voltage is low - Google Patents

Light scattering smoke alarm with means of suppressing an acoustic warning if battery voltage is low Download PDF

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Publication number
EP2423895A3
EP2423895A3 EP11178548.1A EP11178548A EP2423895A3 EP 2423895 A3 EP2423895 A3 EP 2423895A3 EP 11178548 A EP11178548 A EP 11178548A EP 2423895 A3 EP2423895 A3 EP 2423895A3
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EP
European Patent Office
Prior art keywords
fire detector
detection unit
battery voltage
voltage
suppressing
Prior art date
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Granted
Application number
EP11178548.1A
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German (de)
French (fr)
Other versions
EP2423895A2 (en
EP2423895B1 (en
Inventor
Michael Clossen-Von Lanken Schulz
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.)
Siemens Schweiz AG
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Siemens Schweiz AG
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Publication date
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Application filed by Siemens Schweiz AG filed Critical Siemens Schweiz AG
Publication of EP2423895A2 publication Critical patent/EP2423895A2/en
Publication of EP2423895A3 publication Critical patent/EP2423895A3/en
Application granted granted Critical
Publication of EP2423895B1 publication Critical patent/EP2423895B1/en
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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
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/181—Prevention or correction of operating errors due to failing power supply

Abstract

Die Erfindung betrifft einen Brandmelder (1), welcher eine nach dem optischen Streulichtprinzip arbeitende Detektionseinheit (2) sowie eine elektronische Auswerteeinheit (3) aufweist. Er weist einen akustischen und/oder optischen Melder (5, 6) zur Ausgabe eines akustischen und/oder optischen Alarms (AA, OA) im detektierten Brandfall auf. Weiterhin weist der Brandmelder einen Energiespeicher (4), insbesondere eine Batterie, zur autarken elektrischen Versorgung des Brandmelders sowie eine Spannungsmesseinheit zur Messung einer am Energiespeicher anliegenden Batteriespannung (UBat) auf. Er umfasst ferner Warnmittel zur Ausgabe einer akustischen Warnung (AW) für den Fall, dass die Batteriespannung einen ersten Spannungsgrenzwert (ULow) unterschreitet. Zudem umfasst der Brandmelder einen für Umgebungslicht empfindlichen Sensor (8) sowie Mittel zum Unterdrücken der Ausgabe der akustischen Warnung, falls das Umgebungslicht einen vorgebbaren Helligkeitsgrenzwert (HG) unterschreitet. Erfindungsgemäss ist die Detektionseinheit eine offene Streulicht-Detektionseinheit mit einem ausserhalb des Brandmelders liegenden Detektionsraum (DR). Der für Umgebungslicht empfindliche Sensor ist zugleich ein optischer Empfänger der Streulicht-Detektionseinheit.

Figure imgaf001
The invention relates to a fire detector (1) which has a detection unit (2) operating according to the optical scattered-light principle and an electronic evaluation unit (3). It has an acoustic and / or optical detector (5, 6) for outputting an audible and / or visual alarm (AA, OA) in the event of a detected fire. Furthermore, the fire detector has an energy storage device (4), in particular a battery, for self-sufficient electrical supply of the fire detector and a voltage measuring unit for measuring a voltage applied to the energy storage battery voltage (U Bat ). It also includes warning means for outputting an audible warning (AW) in the event that the battery voltage falls below a first voltage limit (U Low ). In addition, the fire detector comprises a sensitive to ambient light sensor (8) and means for suppressing the output of the acoustic warning, if the ambient light falls below a predetermined brightness limit (HG). According to the invention, the detection unit is an open scattered-light detection unit with a detection space (DR) located outside the fire detector. The sensitive to ambient light sensor is also an optical receiver of the scattered light detection unit.
Figure imgaf001
EP11178548.1A 2010-08-26 2011-08-23 Light scattering smoke alarm with means of suppressing an acoustic warning if battery voltage is low Active EP2423895B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010039835 2010-08-26

Publications (3)

Publication Number Publication Date
EP2423895A2 EP2423895A2 (en) 2012-02-29
EP2423895A3 true EP2423895A3 (en) 2015-03-04
EP2423895B1 EP2423895B1 (en) 2017-03-08

Family

ID=44534005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11178548.1A Active EP2423895B1 (en) 2010-08-26 2011-08-23 Light scattering smoke alarm with means of suppressing an acoustic warning if battery voltage is low

Country Status (3)

Country Link
US (1) US9053620B2 (en)
EP (1) EP2423895B1 (en)
CN (1) CN102568145B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8907802B2 (en) 2012-04-29 2014-12-09 Valor Fire Safety, Llc Smoke detector with external sampling volume and ambient light rejection
US9140646B2 (en) 2012-04-29 2015-09-22 Valor Fire Safety, Llc Smoke detector with external sampling volume using two different wavelengths and ambient light detection for measurement correction
US8947244B2 (en) 2012-04-29 2015-02-03 Valor Fire Safety, Llc Smoke detector utilizing broadband light, external sampling volume, and internally reflected light
CN102830336B (en) * 2012-08-23 2015-09-16 英利能源（中国）有限公司 For warning device and the method for photovoltaic cell unacceptable product
US9627925B2 (en) 2012-12-28 2017-04-18 Walter Kidde Portable Equipment, Inc. Methods and apparatus for managing and utilizing harvested energy
CN103077568A (en) * 2012-12-29 2013-05-01 苏州市职业大学 Warning device for indicating road inspection well cover theft
CA3122468C (en) 2013-10-07 2023-10-17 Google Llc Smart-home hazard detector providing non-alarm status signals at opportune moments
WO2015065965A1 (en) 2013-10-30 2015-05-07 Valor Fire Safety, Llc Smoke detector with external sampling volume and ambient light rejection
JP6852973B2 (en) * 2016-03-14 2021-03-31 大阪瓦斯株式会社 Battery-powered alarm
JP6748455B2 (en) * 2016-03-14 2020-09-02 大阪瓦斯株式会社 Battery alarm
ES2894676T3 (en) 2016-08-04 2022-02-15 Carrier Corp Smoke detector
JP7285497B2 (en) * 2018-11-30 2023-06-02 パナソニックＩｐマネジメント株式会社 EQUIPMENT MANAGEMENT SYSTEM, CONTROL METHOD, AND PROGRAM

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287517A (en) * 1980-01-25 1981-09-01 Pittway Corporation Circuit for eliminating low battery voltage alarm signal at night
US4300133A (en) * 1977-03-28 1981-11-10 Solomon Elias E Smoke detector
EP1515290A1 (en) * 2003-09-02 2005-03-16 Siemens Aktiengesellschaft Hazard warning device with battery monitoring

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US4186390A (en) * 1976-08-30 1980-01-29 Electro Signal Lab, Inc. Battery powered smoke detector
US4364030A (en) * 1979-09-10 1982-12-14 Rossin John A Intruder detection system
US4857895A (en) * 1987-08-31 1989-08-15 Kaprelian Edward K Combined scatter and light obscuration smoke detector
AUPN912096A0 (en) 1996-04-04 1996-05-02 Garrick, Corinne Marie Jeanette Fire detector silenceable low battery pre-alarm
US5966078A (en) * 1997-02-19 1999-10-12 Ranco Inc. Battery saving circuit for a dangerous condition warning device
DE10046992C1 (en) 2000-09-22 2002-06-06 Bosch Gmbh Robert Scattered light smoke
US6762688B2 (en) 2001-02-16 2004-07-13 Brk Brands, Inc. Device with silencing circuitry
CN100463006C (en) * 2003-11-17 2009-02-18 报知机股份有限公司 Smoke sensor using scattering light
EP1688898A4 (en) 2003-11-17 2010-03-03 Hochiki Co Smoke sensor using scattering light
DE102004001699A1 (en) * 2004-01-13 2005-08-04 Robert Bosch Gmbh fire alarm
ATE453905T1 (en) 2004-10-18 2010-01-15 Kidde Portable Equipment Inc LOW BATTERY WARNING SILENCING IN LIFE SUPPORT DEVICES
ES2306025T3 (en) 2005-11-04 2008-11-01 Siemens Aktiengesellschaft WARNING OF COMBINED FIRE DISPERSED AND EXTINGUISHING LIGHT.
DE102007039401B4 (en) 2007-08-21 2012-07-12 Hekatron Vertriebs Gmbh Smoke detector with contamination monitoring
EP2093732A1 (en) * 2008-02-19 2009-08-26 Siemens Aktiengesellschaft Device and method for detecting smoke through joint evaluation of two optical backscattering signals
ES2368358T3 (en) 2008-02-19 2011-11-16 Siemens Aktiengesellschaft SMOKE DETECTOR WITH EVALUATION IN THE TIME OF A REPRODUCTION SIGNAL, TEST METHOD FOR THE FUNCTIONING CAPACITY OF A SMOKE DETECTOR.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300133A (en) * 1977-03-28 1981-11-10 Solomon Elias E Smoke detector
US4287517A (en) * 1980-01-25 1981-09-01 Pittway Corporation Circuit for eliminating low battery voltage alarm signal at night
EP1515290A1 (en) * 2003-09-02 2005-03-16 Siemens Aktiengesellschaft Hazard warning device with battery monitoring

Also Published As

Publication number Publication date
CN102568145B (en) 2015-01-14
US9053620B2 (en) 2015-06-09
US20120050051A1 (en) 2012-03-01
EP2423895A2 (en) 2012-02-29
CN102568145A (en) 2012-07-11
EP2423895B1 (en) 2017-03-08

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