GB2173618B - Alarm monitoring installation - Google Patents

Alarm monitoring installation

Info

Publication number
GB2173618B
GB2173618B GB08509441A GB8509441A GB2173618B GB 2173618 B GB2173618 B GB 2173618B GB 08509441 A GB08509441 A GB 08509441A GB 8509441 A GB8509441 A GB 8509441A GB 2173618 B GB2173618 B GB 2173618B
Authority
GB
United Kingdom
Prior art keywords
alarm monitoring
monitoring installation
installation
alarm
monitoring
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
Application number
GB08509441A
Other versions
GB2173618A (en
Inventor
Peter Khin Guillum Carnegie
Balagopal Menon
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.)
EMI Ltd
Original Assignee
EMI Ltd
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 EMI Ltd filed Critical EMI Ltd
Priority to GB08509441A priority Critical patent/GB2173618B/en
Publication of GB2173618A publication Critical patent/GB2173618A/en
Application granted granted Critical
Publication of GB2173618B publication Critical patent/GB2173618B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
    • G08B26/002—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel only replying the state of the sensor
    • 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
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)
GB08509441A 1985-04-12 1985-04-12 Alarm monitoring installation Expired GB2173618B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08509441A GB2173618B (en) 1985-04-12 1985-04-12 Alarm monitoring installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08509441A GB2173618B (en) 1985-04-12 1985-04-12 Alarm monitoring installation

Publications (2)

Publication Number Publication Date
GB2173618A GB2173618A (en) 1986-10-15
GB2173618B true GB2173618B (en) 1988-09-14

Family

ID=10577555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08509441A Expired GB2173618B (en) 1985-04-12 1985-04-12 Alarm monitoring installation

Country Status (1)

Country Link
GB (1) GB2173618B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3116250B2 (en) * 1992-04-09 2000-12-11 能美防災株式会社 Fire alarm system
GB2281428B (en) * 1993-08-21 1996-12-18 Ford Motor Co Vehicle security system
CA2215524A1 (en) * 1995-03-17 1996-09-26 Mats Karling Alarm system for computer equipment connected in a network
US6606028B1 (en) * 1999-04-23 2003-08-12 Pittway Corporation Apparatus and method for supervision
GB2471860B (en) * 2009-07-14 2011-12-07 Apollo Fire Detectors Ltd Signal and devices for wired networks
US8804291B2 (en) 2011-12-12 2014-08-12 Utc Fire & Security Americas Corporation, Inc. Line isolators for isolating multiple faults in emergency systems

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3765016A (en) * 1971-05-24 1973-10-09 Oak Electro Netics Corp Security system including means for polling the premises to be protected
SE374970B (en) * 1972-03-15 1975-03-24 Ericsson Telefon Ab L M
US3845472A (en) * 1972-12-15 1974-10-29 Johnson Service Co Data communication system employing a series loop
US4068105A (en) * 1976-05-28 1978-01-10 American District Telegraph Company Central station system transmission apparatus
GB1567971A (en) * 1977-01-27 1980-05-21 Marconi Co Ltd Data transmission systems
CA1106464A (en) * 1978-04-17 1981-08-04 Peter E. Humphries Four wire multi-satellite intrusion alarm with multiplex annunciation
CA1178678A (en) * 1981-03-13 1984-11-27 John M. Wynne Bidirectional, interactive fire detection system
US4459582A (en) * 1982-08-18 1984-07-10 American District Telegraph Company Local control apparatus for central station alarm system
US4512033A (en) * 1982-11-29 1985-04-16 C-Cor Labs, Inc. Remote level adjustment system for use in a multi-terminal communications system

Also Published As

Publication number Publication date
GB2173618A (en) 1986-10-15

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930412