ATE102374T1 - FIRE ALARM SYSTEM WITH A COMBINATION DETECTOR. - Google Patents

FIRE ALARM SYSTEM WITH A COMBINATION DETECTOR.

Info

Publication number
ATE102374T1
ATE102374T1 AT89117329T AT89117329T ATE102374T1 AT E102374 T1 ATE102374 T1 AT E102374T1 AT 89117329 T AT89117329 T AT 89117329T AT 89117329 T AT89117329 T AT 89117329T AT E102374 T1 ATE102374 T1 AT E102374T1
Authority
AT
Austria
Prior art keywords
fire
alarm
measured
fire alarm
stored
Prior art date
Application number
AT89117329T
Other languages
German (de)
Inventor
Helfried Dipl-Ing Lappe
Otfried Dipl-Ing Post
Peer Dr-Ing Thilo
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of ATE102374T1 publication Critical patent/ATE102374T1/en

Links

Classifications

    • 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
    • G08B29/183—Single detectors using dual technologies
    • 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
    • G08B29/20—Calibration, including self-calibrating arrangements
    • G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
    • 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
    • G08B29/20—Calibration, including self-calibrating arrangements
    • G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
    • G08B29/26—Self-calibration, e.g. compensating for environmental drift or ageing of components by updating and storing reference thresholds

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

The fire alarm records different fire characteristics (BKG), the smoke density (RD) being measured by a smoke sensor, and the heat or temperature (T) being measured by a temperature sensor, and these values being stored for further processing. According to the invention, there is additionally arranged in the fire alarm a humidity sensor by which the relative air humidity (RF) is measured and stored intermediately. A smoke alarm and at least one test value memory in which the water vapour saturation curve is stored use the stored data of the saturation curve, the measured temperature (T) and the measured relative air humidity to compute the absolute air humidity (AF) and store the computed value as a new and additional fire characteristic, that is to say absolute humidity (AF), for further processing. The three fire characteristics (RD, T and AF) are related in a logic device in such a way as to derive therefrom fire alarm criteria for forming an alarm signal. In this case, the calculation of the fire characteristic (AF) and/or the alarm derivation can be carried out either in the fire alarm itself or in the fire alarm control centre, the corresponding measured values (RD, T, RF and AF) being transmitted periodically, or the alarm signal being transmitted to the fire alarm control centre. <IMAGE>
AT89117329T 1989-09-19 1989-09-19 FIRE ALARM SYSTEM WITH A COMBINATION DETECTOR. ATE102374T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89117329A EP0418411B1 (en) 1989-09-19 1989-09-19 Fire alarm system with a combination sounder

Publications (1)

Publication Number Publication Date
ATE102374T1 true ATE102374T1 (en) 1994-03-15

Family

ID=8201907

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89117329T ATE102374T1 (en) 1989-09-19 1989-09-19 FIRE ALARM SYSTEM WITH A COMBINATION DETECTOR.

Country Status (4)

Country Link
EP (1) EP0418411B1 (en)
AT (1) ATE102374T1 (en)
DE (1) DE58907131D1 (en)
ES (1) ES2049787T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021208A1 (en) * 1995-01-04 1996-07-11 Caradon Gent Limited Improvements in and relating to smoke detectors
US5659292A (en) * 1995-02-21 1997-08-19 Pittway Corporation Apparatus including a fire sensor and a non-fire sensor
DE102004023524B3 (en) * 2004-05-13 2005-09-15 Job Lizenz Gmbh & Co. Kg Smoke and mist detection device for activation of fire alarm and sprinkler system in building has chamber with grilles at ends containing support for photosensor and indirect illumination LED
EP1732049A1 (en) * 2005-06-10 2006-12-13 Siemens S.A.S. Fire or smoke detector with high false alarm rejection performance

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313137A1 (en) * 1983-04-12 1984-10-18 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT FOR CANCELING NOISE IN OPTICAL SMOKE DETECTORS
AU573243B2 (en) * 1983-08-12 1988-06-02 Vision Systems Limited Pollution detecting apparatus
DE3337330A1 (en) * 1983-10-13 1985-04-25 Siemens AG, 1000 Berlin und 8000 München METHOD AND ARRANGEMENT FOR ANALOGUE TRANSFER OF MEASURED VALUES OF THE RESPECTIVE FIRE CHARACTERISTICS OF A MULTI-CRITERIA FIRE DETECTOR
JPS61247918A (en) * 1985-04-26 1986-11-05 Hochiki Corp Output correcting device for analog sensor
JPS62269293A (en) * 1986-05-19 1987-11-21 石井　弘允 Fire alarm

Also Published As

Publication number Publication date
EP0418411B1 (en) 1994-03-02
EP0418411A1 (en) 1991-03-27
DE58907131D1 (en) 1994-04-07
ES2049787T3 (en) 1994-05-01

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee