IT8024325A0 - DIRECT CURRENT SIGNALING SYSTEM. - Google Patents

DIRECT CURRENT SIGNALING SYSTEM.

Info

Publication number
IT8024325A0
IT8024325A0 IT8024325A IT2432580A IT8024325A0 IT 8024325 A0 IT8024325 A0 IT 8024325A0 IT 8024325 A IT8024325 A IT 8024325A IT 2432580 A IT2432580 A IT 2432580A IT 8024325 A0 IT8024325 A0 IT 8024325A0
Authority
IT
Italy
Prior art keywords
direct current
signaling system
current signaling
direct
signaling
Prior art date
Application number
IT8024325A
Other languages
Italian (it)
Other versions
IT1132498B (en
Inventor
Screyer Karlheinz
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
Publication of IT8024325A0 publication Critical patent/IT8024325A0/en
Application granted granted Critical
Publication of IT1132498B publication Critical patent/IT1132498B/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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)
  • Fire Alarms (AREA)
IT24325/80A 1979-08-31 1980-08-28 DIRECT CURRENT SIGNALING SYSTEM IT1132498B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2935335A DE2935335C2 (en) 1979-08-31 1979-08-31 DC alarm system

Publications (2)

Publication Number Publication Date
IT8024325A0 true IT8024325A0 (en) 1980-08-28
IT1132498B IT1132498B (en) 1986-07-02

Family

ID=6079786

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24325/80A IT1132498B (en) 1979-08-31 1980-08-28 DIRECT CURRENT SIGNALING SYSTEM

Country Status (4)

Country Link
AT (1) AT384315B (en)
DE (1) DE2935335C2 (en)
IT (1) IT1132498B (en)
NL (1) NL8004913A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2114341B (en) * 1982-01-30 1985-04-11 Ferranti Ltd Monitoring system
GB2117150B (en) * 1982-02-26 1986-03-19 Morrison John M Intruder alarm system
DE3211550C2 (en) * 1982-03-29 1985-02-14 Siemens AG, 1000 Berlin und 8000 München DC alarm system
GB2138187B (en) * 1983-04-08 1986-09-10 Morrison John M Burglar alarm system
EP0178451B1 (en) * 1984-09-12 1989-05-03 Siemens Aktiengesellschaft Annunciator identification arrangement in an alarm system
EP0178454B1 (en) * 1984-09-12 1989-05-31 Siemens Aktiengesellschaft Annunciator identification method and device in an alarm system
DE3570780D1 (en) * 1984-09-12 1989-07-06 Siemens Ag Annunciator identification arrangement in an alarm system
DE3620681A1 (en) * 1986-06-20 1987-12-23 Merk Gmbh Telefonbau Fried Circuit arrangement for identifying alarm signalling units
DE3719988A1 (en) * 1987-06-15 1988-12-29 Total Feuerschutz Gmbh INDIVIDUAL IDENTIFICATION
FR2664408A1 (en) * 1990-07-04 1992-01-10 Spie Trindel Monitoring and alarm installation
EP0602570B1 (en) * 1992-12-18 1999-05-06 Siemens Aktiengesellschaft Alarm system
DE10051329C2 (en) * 2000-10-10 2003-12-11 Job Lizenz Gmbh & Co Kg Alarm system
DE102010056006B4 (en) 2010-12-23 2019-05-09 Volkswagen Ag Method for monitoring a pipeline network for a vehicle and corresponding monitoring device and vehicle
US9633554B1 (en) 2015-10-14 2017-04-25 Honeywell International Inc. Fire alarm loop calibration and fault location
EP3540706B1 (en) * 2018-03-14 2020-10-21 Siemens Schweiz AG System and method for addressing distant actuated safety devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE873055C (en) * 1950-04-02 1953-04-09 J C Eckardt A G Electrical monitoring device
SE402660B (en) * 1970-11-12 1978-07-10 Securitas Int Ab FIREPLACE FACILITY
DE2705045A1 (en) * 1977-02-08 1978-08-10 Howaldtswerke Deutsche Werft Transducer location differentiation in monitoring networks - uses single supply transmission line with branched distributors having resistors and diodes in series
DE2749660A1 (en) * 1977-11-05 1979-05-10 Licentia Gmbh Signalling and alarm system - has contact shunted by diode, so that in case of alarm supply voltage is rectified

Also Published As

Publication number Publication date
AT384315B (en) 1987-10-27
IT1132498B (en) 1986-07-02
DE2935335A1 (en) 1981-03-19
DE2935335C2 (en) 1985-08-08
NL8004913A (en) 1981-03-03
ATA436180A (en) 1987-03-15

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