EP0093095A3 - 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 - Google Patents

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 Download PDF

Info

Publication number
EP0093095A3
EP0093095A3 EP83850093A EP83850093A EP0093095A3 EP 0093095 A3 EP0093095 A3 EP 0093095A3 EP 83850093 A EP83850093 A EP 83850093A EP 83850093 A EP83850093 A EP 83850093A EP 0093095 A3 EP0093095 A3 EP 0093095A3
Authority
EP
European Patent Office
Prior art keywords
identifying
loop circuit
signal
alarm
detector
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.)
Withdrawn
Application number
EP83850093A
Other languages
German (de)
French (fr)
Other versions
EP0093095A2 (en
Inventor
Benni Göran Ingemar Glanshed
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.)
Cerberus AG
Original Assignee
Cerberus 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 Cerberus AG filed Critical Cerberus AG
Publication of EP0093095A2 publication Critical patent/EP0093095A2/en
Publication of EP0093095A3 publication Critical patent/EP0093095A3/en
Withdrawn legal-status Critical Current

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

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.
EP83850093A 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 Withdrawn EP0093095A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8202566 1982-04-23
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 (2)

Publication Number Publication Date
EP0093095A2 EP0093095A2 (en) 1983-11-02
EP0093095A3 true EP0093095A3 (en) 1986-12-30

Family

ID=20346627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83850093A Withdrawn 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

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8902760B2 (en) 1998-04-10 2014-12-02 Chrimar Systems, Inc. Network system and optional tethers

Families Citing this family (8)

* 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
FR2897968B1 (en) * 2006-02-24 2008-11-21 Airbus France Sas FIRE DETECTION SYSTEM AND AIRCRAFT EQUIPPED WITH SUCH A SYSTEM

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757301A (en) * 1971-06-17 1973-09-04 Eaton Corp Single cable signaling system
US3778796A (en) * 1970-03-31 1973-12-11 Nittan Co Ltd Fire alarming 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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778796A (en) * 1970-03-31 1973-12-11 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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8902760B2 (en) 1998-04-10 2014-12-02 Chrimar Systems, Inc. Network system and optional tethers
US8942107B2 (en) 1998-04-10 2015-01-27 Chrimar Systems, Inc. Piece of ethernet terminal equipment
US9049019B2 (en) 1998-04-10 2015-06-02 Chrimar Systems, Inc. Network equipment and optional tether

Also Published As

Publication number Publication date
EP0093095A2 (en) 1983-11-02
DK179483A (en) 1983-10-24
FI830990A0 (en) 1983-03-23
NO831433L (en) 1983-10-24
SE8202566L (en) 1983-10-24
FI830990L (en) 1983-10-24
DK179483D0 (en) 1983-04-22

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE IT LI NL

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CERBERUS AG

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE IT LI NL

17P Request for examination filed

Effective date: 19870121

17Q First examination report despatched

Effective date: 19871002

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890301

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GLANSHED, BENNI GOERAN INGEMAR