SE8202566L - PROCEDURE AND DEVICE FOR IDENTIFYING AN ALARMING DETECTOR IN A CIRCUIT WITH A PRESET NUMBER OF PARALLEL CONNECTED DETECTORS - Google Patents

PROCEDURE AND DEVICE FOR IDENTIFYING AN ALARMING DETECTOR IN A CIRCUIT WITH A PRESET NUMBER OF PARALLEL CONNECTED DETECTORS

Info

Publication number
SE8202566L
SE8202566L SE8202566A SE8202566A SE8202566L SE 8202566 L SE8202566 L SE 8202566L SE 8202566 A SE8202566 A SE 8202566A SE 8202566 A SE8202566 A SE 8202566A SE 8202566 L SE8202566 L SE 8202566L
Authority
SE
Sweden
Prior art keywords
identifying
signal
detector
line unit
loop circuit
Prior art date
Application number
SE8202566A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
B G I Glanshed
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE8202566A priority Critical patent/SE8202566L/en
Priority to FI830990A priority patent/FI830990L/en
Priority to EP83850093A priority patent/EP0093095A3/en
Priority to DK179483A priority patent/DK179483A/en
Priority to NO831433A priority patent/NO831433L/en
Publication of SE8202566L publication Critical patent/SE8202566L/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/04—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The invention relates to a method and an apparatus for identifying a detector giving an alarm, said detector being one of a predetermined number of detectors (2) connected in parallel in a loop circuit connected to a line unit (1). The line unit (1) supplies the loop circuit with a first signal and the detectors (2) in an alarm state are adapted to give a predetermined voltage drop across the loop circuit in response to the first signal. This voltage drop in turn gives rise to an alarm signal from the line unit (1). In accordance with the invention, the line unit (1) is adapted to supply the loop circuit with a second signal in response to this voltage drop, and in response to this second signal the detector in an alarm state is adapted to emit a preprogrammed identifying signal to the line unit (1) for identifying said detector. The identifying signal can also include priority information.
SE8202566A 1982-04-23 1982-04-23 PROCEDURE AND DEVICE FOR IDENTIFYING AN ALARMING DETECTOR IN A CIRCUIT WITH A PRESET NUMBER OF PARALLEL CONNECTED DETECTORS SE8202566L (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8202566A SE8202566L (en) 1982-04-23 1982-04-23 PROCEDURE AND DEVICE FOR IDENTIFYING AN ALARMING DETECTOR IN A CIRCUIT WITH A PRESET NUMBER OF PARALLEL CONNECTED DETECTORS
FI830990A FI830990L (en) 1982-04-23 1983-03-23 FOERFARANDE OCH ANORDNING FOER ATT I EN SLINGKRETS MED ETT FOERUTBESTAEMT ANTAL PARALLELLKOPPLADE DETEKTORER IDENTIFIERA EN LARMANDE DETEKTOR
EP83850093A EP0093095A3 (en) 1982-04-23 1983-04-12 A method and an apparatus for identifying a detector giving an alarm in a loop circuit having a predetermined number of detectors connected in parallel
DK179483A DK179483A (en) 1982-04-23 1983-04-22 PROCEDURE AND APPARATUS FOR IN A CIRCUIT CIRCUIT WITH A PRESCRIPTED NUMBER OF PARALLEL CONNECTED DETECTORS TO IDENTIFY A DETECTOR THAT ISSUING AN ALARM
NO831433A NO831433L (en) 1982-04-23 1983-04-22 PROCEDURE AND DEVICE FOR IN AN EMERGENCY CIRCUIT WITH A PRESERVED NUMBER OF PARALLEL CONNECTED DETECTORS AA IDENTIFY AN ALARMING DETECTOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8202566A SE8202566L (en) 1982-04-23 1982-04-23 PROCEDURE AND DEVICE FOR IDENTIFYING AN ALARMING DETECTOR IN A CIRCUIT WITH A PRESET NUMBER OF PARALLEL CONNECTED DETECTORS

Publications (1)

Publication Number Publication Date
SE8202566L true SE8202566L (en) 1983-10-24

Family

ID=20346627

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8202566A SE8202566L (en) 1982-04-23 1982-04-23 PROCEDURE AND DEVICE FOR IDENTIFYING AN ALARMING DETECTOR IN A CIRCUIT WITH A PRESET NUMBER OF PARALLEL CONNECTED DETECTORS

Country Status (5)

Country Link
EP (1) EP0093095A3 (en)
DK (1) DK179483A (en)
FI (1) FI830990L (en)
NO (1) NO831433L (en)
SE (1) SE8202566L (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3478654D1 (en) * 1984-06-05 1989-07-13 Siemens Ag Method of and device for identifying an alarm triggering sensor in a danger signalling device
DE3585127D1 (en) * 1984-09-20 1992-02-20 Siemens Ag METHOD AND ARRANGEMENT FOR DETECTING THE DETECTOR OF A HAZARD ALARM SYSTEM.
JPH0719315B2 (en) * 1985-04-09 1995-03-06 ホーチキ株式会社 Fire alarm
JPH03237597A (en) * 1990-02-15 1991-10-23 Niizu Denshi Kk Sensor identification system
FR2723232B1 (en) * 1994-07-29 1996-10-18 Lewiner Jacques IMPROVEMENTS TO ALARM DETECTORS FOR BUILDING MONITORING
SE9504260D0 (en) * 1995-11-28 1995-11-28 Willy Weymann Detector
GB2321747B (en) * 1997-01-30 2000-10-18 Rafiki Protection Limited Alarm system
WO1999053627A1 (en) 1998-04-10 1999-10-21 Chrimar Systems, Inc. Doing Business As Cms Technologies System for communicating with electronic equipment on a network
FR2897968B1 (en) 2006-02-24 2008-11-21 Airbus France Sas FIRE DETECTION SYSTEM AND AIRCRAFT EQUIPPED WITH SUCH A SYSTEM

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA71780B (en) * 1970-03-31 1971-10-27 Nittan Co Ltd Fire alarming system
US3757301A (en) * 1971-06-17 1973-09-04 Eaton Corp Single cable signaling system
US3803594A (en) * 1972-07-17 1974-04-09 Johnson Service Co Programmed time division multiplexed coded tone transmission system
US3846794A (en) * 1973-03-15 1974-11-05 Baker Ind Inc Alarm retransmission system
US4228424A (en) * 1978-10-16 1980-10-14 Baker Protective Services, Incorporated Central station alarm

Also Published As

Publication number Publication date
DK179483D0 (en) 1983-04-22
EP0093095A2 (en) 1983-11-02
DK179483A (en) 1983-10-24
FI830990A0 (en) 1983-03-23
EP0093095A3 (en) 1986-12-30
FI830990L (en) 1983-10-24
NO831433L (en) 1983-10-24

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