DE3668247D1 - FIRE DETECTING SYSTEM WITH A SUCTION SYSTEM. - Google Patents

FIRE DETECTING SYSTEM WITH A SUCTION SYSTEM.

Info

Publication number
DE3668247D1
DE3668247D1 DE8686103608T DE3668247T DE3668247D1 DE 3668247 D1 DE3668247 D1 DE 3668247D1 DE 8686103608 T DE8686103608 T DE 8686103608T DE 3668247 T DE3668247 T DE 3668247T DE 3668247 D1 DE3668247 D1 DE 3668247D1
Authority
DE
Germany
Prior art keywords
flow
speed
central station
sensor
value
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 - Fee Related
Application number
DE8686103608T
Other languages
German (de)
Inventor
Peer Dr Ing Thilo
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 AG
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
Priority to DE8686103608T priority Critical patent/DE3668247D1/en
Application granted granted Critical
Publication of DE3668247D1 publication Critical patent/DE3668247D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Abstract

1. Method of early fire detection in a fire detector arrangement with a suction system, which has at least one measurement chamber with a smoke detector and a plurality of suction pipes as well as a central station with a data processing system, there being arranged in each suction pipe a flow-speed sensor which delivers an electrical signal as a function of the measured flow speed, characterized in that each flow-speed sensor is regularly interrogated from the central station for its analogue measured values, in that a flow-speed mean value is formed and stored in the central station for each flow-speed sensor, a fault signal being output when the current measured value of the flow-speed deviates from the corresponding mean value by a given amount, in that the smoke detector is formed by a smoke sensor measuring analogue values, which sensor is regularly interrogated from the central station for its analogue measured value, the smoke detector neutral value being formed and stored in the central station, and an alarm signal being derived from the interrogated measured values when the interrogated measured value of the smoke sensor falls below or exceeds the smoke detector neutral value by a given amount, which represents the alarm threshold, and in that the level of the alarm threshold can be altered as a function of the flow-speed measured values determined.
DE8686103608T 1985-03-20 1986-03-18 FIRE DETECTING SYSTEM WITH A SUCTION SYSTEM. Expired - Fee Related DE3668247D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8686103608T DE3668247D1 (en) 1985-03-20 1986-03-18 FIRE DETECTING SYSTEM WITH A SUCTION SYSTEM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3510100 1985-03-20
DE8686103608T DE3668247D1 (en) 1985-03-20 1986-03-18 FIRE DETECTING SYSTEM WITH A SUCTION SYSTEM.

Publications (1)

Publication Number Publication Date
DE3668247D1 true DE3668247D1 (en) 1990-02-15

Family

ID=6265823

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686103608T Expired - Fee Related DE3668247D1 (en) 1985-03-20 1986-03-18 FIRE DETECTING SYSTEM WITH A SUCTION SYSTEM.

Country Status (3)

Country Link
EP (1) EP0197371B1 (en)
AT (1) ATE49484T1 (en)
DE (1) DE3668247D1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428694C2 (en) 1994-08-12 1996-06-20 Wagner Alarm Sicherung Air pressure compensated fire detection device and method
DE10231230B4 (en) * 2002-05-13 2004-07-22 F & B GmbH Feuerschutz & Brandbekämpfung Water spray system for localizing the location of the fire
AU2003902318A0 (en) 2003-05-14 2003-05-29 Vision Fire And Security Pty Ltd Improved Sensing Apparatus And Method
ATE498169T1 (en) * 2003-09-24 2011-02-15 Xtralis Technologies Ltd METHOD AND DEVICE FOR DETERMINING THE OPERATIONAL STATE OF POLLUTION MONITORING DEVICES
DE102004044094A1 (en) * 2004-09-09 2006-03-30 Hekatron Vertriebs Gmbh Intake fire detector and method of operation
US7504962B2 (en) 2005-11-22 2009-03-17 Joseph Stephen Smith Apparatus for enclosing a smoke detector
US20100194575A1 (en) * 2009-01-30 2010-08-05 Carlos Pedrejon Rodriguez Dual channel aspirated detector
ES2958969T3 (en) 2020-05-08 2024-02-16 Carrier Corp Leak detection in an aspiration fire detection system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1232841A (en) * 1968-05-09 1971-05-19
US4254414A (en) * 1979-03-22 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Processor-aided fire detector
DE3127324A1 (en) * 1981-07-10 1983-01-27 Siemens AG, 1000 Berlin und 8000 München METHOD AND ARRANGEMENT FOR INCREASING THE SENSITIVITY AND EMERGENCY SAFETY IN A DANGER, IN PARTICULAR FIRE DETECTING SYSTEM
FR2518287A1 (en) * 1981-12-10 1983-06-17 Cerberus Guinard Electrical conductor free smoke detector pipe networks - includes air flow sensor to indicate blockage of any air sampling holes in network using wheatstone bridge and heating resistors

Also Published As

Publication number Publication date
ATE49484T1 (en) 1990-01-15
EP0197371A1 (en) 1986-10-15
EP0197371B1 (en) 1990-01-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee