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DE3768019D1 - DANGER REPORTING SYSTEM. - Google Patents

DANGER REPORTING SYSTEM.

Info

Publication number
DE3768019D1
DE3768019D1 DE8787109814T DE3768019T DE3768019D1 DE 3768019 D1 DE3768019 D1 DE 3768019D1 DE 8787109814 T DE8787109814 T DE 8787109814T DE 3768019 T DE3768019 T DE 3768019T DE 3768019 D1 DE3768019 D1 DE 3768019D1
Authority
DE
Germany
Prior art keywords
detector
status
control centre
scanning
signalling
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 - Lifetime
Application number
DE8787109814T
Other languages
German (de)
Inventor
Otto-Walter Moser
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to DE8787109814T priority Critical patent/DE3768019D1/en
Application granted granted Critical
Publication of DE3768019D1 publication Critical patent/DE3768019D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08B26/005—Alarm systems in which substations are interrogated in succession by a central station with substations connected in series, e.g. cascade

Landscapes

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

Abstract

Danger alarm system with a control centre (Z) with an analyser and several two-wire signalling leads (ML) to which a plurality (i) of individually identifiable detectors (Mi) are connected in a chain arrangement; each of these has a controllable switch (STi) in one of the two wire leads (b). The detectors (Mi) are scanned cyclically from the control centre for their current status, each detector (Mi) switching the next detector (Mi + 1) through to the signalling lead (ML) after a time delay (ZG) dependent on its measured value and sends a current pulse on the signalling lead. In the analyser, the detector address and its measured value are determined from the respective time of the current pulse (li) and from these an alarm or malfunction indication is obtained. In accordance with the invention, a number of status scanning cycles (ZAZ) are carried out in sequence by the control centre (Z) and, in the case of a change of status or for any other reason, regular scanning cycles (RAZ) are carried out in which the detector address is also determined. The status scanning cycle uses a scan voltage (U3) which deviates from the scan voltage (U2) used for the regular scanning cycle (RAZ). For the status scanning (ZAZ), each detector (Mi) has additionally a comparator element (K) which switches the following detector (Mi + 1) through with no time delay. <IMAGE>
DE8787109814T 1986-07-10 1987-07-07 DANGER REPORTING SYSTEM. Expired - Lifetime DE3768019D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8787109814T DE3768019D1 (en) 1986-07-10 1987-07-07 DANGER REPORTING SYSTEM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3623295 1986-07-10
DE8787109814T DE3768019D1 (en) 1986-07-10 1987-07-07 DANGER REPORTING SYSTEM.

Publications (1)

Publication Number Publication Date
DE3768019D1 true DE3768019D1 (en) 1991-03-21

Family

ID=6304878

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787109814T Expired - Lifetime DE3768019D1 (en) 1986-07-10 1987-07-07 DANGER REPORTING SYSTEM.

Country Status (3)

Country Link
EP (1) EP0254125B1 (en)
AT (1) ATE60885T1 (en)
DE (1) DE3768019D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0404976B1 (en) * 1989-06-28 1994-02-16 Siemens Aktiengesellschaft Method for data transmission in an alarm signalling device
ATE144063T1 (en) * 1990-12-18 1996-10-15 Siemens Ag HAZARD DETECTION SYSTEM
FR2717287B1 (en) * 1994-03-09 1996-05-15 Sicli Automatismes Monitoring installation.
DE19534344C1 (en) * 1995-09-15 1997-02-27 Siemens Ag Hazard indicator system, esp. for fire alarm
DE102011018630B4 (en) * 2011-04-21 2013-02-07 Phoenix Contact Gmbh & Co. Kg Security communication system for signaling system states
EP3010000B1 (en) * 2014-10-17 2017-09-27 Siemens Schweiz AG System for controlling actuated security devices

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR78472E (en) * 1960-09-30 1962-07-27 Constr Telephoniques Improvements to remote signaling and remote control systems
DE2533354C3 (en) * 1975-07-25 1979-08-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for transmitting control commands in a fire protection system
DE2533382C2 (en) * 1975-07-25 1980-07-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method and device for the transmission of measured values in a fire alarm system
DE3584000D1 (en) * 1984-10-31 1991-10-10 Siemens Ag METHOD FOR TRANSMITTING THE IDENTIFIER OF SENSORS IN A HAZARD ALARM SYSTEM.
GB8431883D0 (en) * 1984-12-18 1985-01-30 Gent Ltd Transmission system

Also Published As

Publication number Publication date
EP0254125B1 (en) 1991-02-13
ATE60885T1 (en) 1991-02-15
EP0254125A1 (en) 1988-01-27

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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