SE7905576L - ELECTRICAL ALARM SYSTEM - Google Patents

ELECTRICAL ALARM SYSTEM

Info

Publication number
SE7905576L
SE7905576L SE7905576A SE7905576A SE7905576L SE 7905576 L SE7905576 L SE 7905576L SE 7905576 A SE7905576 A SE 7905576A SE 7905576 A SE7905576 A SE 7905576A SE 7905576 L SE7905576 L SE 7905576L
Authority
SE
Sweden
Prior art keywords
sensor
sensors
alarm system
signal
central station
Prior art date
Application number
SE7905576A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE439395B (en
Inventor
M Neumann
E Link
Original Assignee
Ristow Kg Dr Alfred
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 Ristow Kg Dr Alfred filed Critical Ristow Kg Dr Alfred
Publication of SE7905576L publication Critical patent/SE7905576L/en
Publication of SE439395B publication Critical patent/SE439395B/en

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
    • 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)
  • Selective Calling Equipment (AREA)
  • Alarm Systems (AREA)

Abstract

The alarm system, which can be used as a fire alarm, consists of a central station (2) which evaluates and, if appropriate, issues alarms, from which station (2) at least one two-wire sensor line (1), on which there are a plurality of sensors (19), is conducted. The sensors (19) are connected to one another in a sequential circuit in such a way that each sensor (19) connects the subsequent sensor (19) onto the sensor line (1) after a signal is issued. After the issuing of the signal of the last sensor (19) via a corresponding circuit in the central station (2), a brief interruption in the line voltage is brought about and, then, a new interrogation cycle is initiated. Thus, the interference influences and false alarms which occur with the conventional analog type of measurement value transmission and counting of the incoming reports are avoided to the greatest possible extent. <IMAGE>
SE7905576A 1978-08-23 1979-06-26 ELECTRONIC REMOTE MONITORING SYSTEM SE439395B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782836760 DE2836760C2 (en) 1978-08-23 1978-08-23 Electronic remote monitoring system

Publications (2)

Publication Number Publication Date
SE7905576L true SE7905576L (en) 1980-02-24
SE439395B SE439395B (en) 1985-06-10

Family

ID=6047678

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7905576A SE439395B (en) 1978-08-23 1979-06-26 ELECTRONIC REMOTE MONITORING SYSTEM

Country Status (3)

Country Link
CH (1) CH640964A5 (en)
DE (1) DE2836760C2 (en)
SE (1) SE439395B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH651688A5 (en) * 1980-06-23 1985-09-30 Cerberus Ag METHOD FOR TRANSMITTING MEASURED VALUES IN A FIRE DETECTING SYSTEM AND DEVICE FOR IMPLEMENTING THE METHOD.
CA1178678A (en) * 1981-03-13 1984-11-27 John M. Wynne Bidirectional, interactive fire detection system
DE3128796A1 (en) * 1981-07-21 1983-02-10 Esser Sicherheitstechnik GmbH & Co KG, 4040 Neuss Fire or intrusion detection system
DE3150313C2 (en) * 1981-12-18 1985-03-07 Siemens AG, 1000 Berlin und 8000 München Arrangement for determining and reporting the position of a number of switches and for monitoring the connection line
JPS58127292A (en) * 1982-01-26 1983-07-29 ニツタン株式会社 Fire sensing system
EP0098553B1 (en) * 1982-07-05 1987-02-11 Siemens Aktiengesellschaft Method and device for automatically demanding signal measure values and/or signal identification in an alarm installation
DE3225106C2 (en) * 1982-07-05 1985-04-11 Siemens AG, 1000 Berlin und 8000 München Process and device for the automatic query of the detector measured value and the detector recognition in a hazard alarm system
DE3225081A1 (en) * 1982-07-05 1984-01-12 Siemens AG, 1000 Berlin und 8000 München METHOD AND DEVICE FOR AUTOMATICALLY INQUIRING THE DETECTOR MEASUREMENT VALUE AND DETECTOR DETECTION IN A DANGER DETECTING SYSTEM
DE3239173C2 (en) * 1982-10-22 1984-11-08 Siemens AG, 1000 Berlin und 8000 München Microwave intrusion alarm system
EP0167669B1 (en) * 1984-06-05 1989-06-07 Siemens Aktiengesellschaft Method of and device for identifying an alarm triggering sensor in a danger signalling device
DE3614692A1 (en) * 1986-04-30 1987-11-05 Nixdorf Computer Ag DANGER REPORTING SYSTEM
DE3806993A1 (en) * 1988-03-03 1989-09-14 Preussag Ag Feuerschutz Danger detecting system (danger warning system, alarm system)
JPH03237597A (en) * 1990-02-15 1991-10-23 Niizu Denshi Kk Sensor identification system
DE4038992C1 (en) * 1990-12-06 1992-02-06 Siemens Ag, 8000 Muenchen, De
DE19911698A1 (en) * 1999-03-16 2000-09-21 Sick Ag Safety switching arrangement
DE10342044A1 (en) * 2003-09-11 2005-04-07 Robert Bosch Gmbh Sensor, controller and method for operating sensors connected to a controller
GB2459848B (en) * 2008-05-06 2011-09-28 Cascom Ltd Self-commutating asynchronous sequential reading system
DE102009050692B4 (en) * 2009-10-26 2011-12-01 Phoenix Contact Gmbh & Co. Kg Security communication system for signaling system states
GB2551501A (en) 2016-06-17 2017-12-27 Sumitomo Chemical Co Nanoparticles
EP3482380A1 (en) * 2016-07-07 2019-05-15 UTC Fire & Security EMEA BVBA Sensor data transmission system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2635763A1 (en) * 1976-08-09 1978-02-16 Siemens Ag FIRE ALARM SYSTEM WITH SEVERAL DETECTORS THAT CAN BE OPERATED IN ONE MESSAGE LOOP
DE2641489C2 (en) * 1976-09-15 1984-05-30 Siemens AG, 1000 Berlin und 8000 München Method for the transmission of measured values in a fire alarm system

Also Published As

Publication number Publication date
DE2836760A1 (en) 1980-03-06
DE2836760C2 (en) 1983-11-17
SE439395B (en) 1985-06-10
CH640964A5 (en) 1984-01-31

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