ATE143519T1 - METHOD FOR INCREASING INTERFERENCE IN HAZARD ALARM SYSTEMS - Google Patents

METHOD FOR INCREASING INTERFERENCE IN HAZARD ALARM SYSTEMS

Info

Publication number
ATE143519T1
ATE143519T1 AT91110971T AT91110971T ATE143519T1 AT E143519 T1 ATE143519 T1 AT E143519T1 AT 91110971 T AT91110971 T AT 91110971T AT 91110971 T AT91110971 T AT 91110971T AT E143519 T1 ATE143519 T1 AT E143519T1
Authority
AT
Austria
Prior art keywords
detector
alarm systems
double line
hazard alarm
increasing interference
Prior art date
Application number
AT91110971T
Other languages
German (de)
Inventor
Klaus Kaiser
Otto Walter Dipl-Ing Moser
Peer Dr-Ing Thilo
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
Application granted granted Critical
Publication of ATE143519T1 publication Critical patent/ATE143519T1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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)
  • Selective Calling Equipment (AREA)
  • Small-Scale Networks (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

In order to increase the interference immunity in danger signal appliances having chain synchronisation, the detectors (M1-Mn) being arranged in the run of a double line (a, b) connected to a control centre (Z), during the transfer of information from one detector to the control centre (Z) the two wires (a, b) of the double line are to be connected through or disconnected symmetrically with respect to said detector. For this purpose, either the switches (S) of all detectors (M1-Mn) are closed, or a switch (S) is provided in each detector in each wire of the double line (a,b), two switches being connected through or disconnected in this way in each case. <IMAGE>
AT91110971T 1990-07-26 1991-07-02 METHOD FOR INCREASING INTERFERENCE IN HAZARD ALARM SYSTEMS ATE143519T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4023766 1990-07-26

Publications (1)

Publication Number Publication Date
ATE143519T1 true ATE143519T1 (en) 1996-10-15

Family

ID=6411061

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91110971T ATE143519T1 (en) 1990-07-26 1991-07-02 METHOD FOR INCREASING INTERFERENCE IN HAZARD ALARM SYSTEMS

Country Status (4)

Country Link
EP (1) EP0468234B1 (en)
AT (1) ATE143519T1 (en)
DE (1) DE59108219D1 (en)
ES (1) ES2091265T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7533517B2 (en) * 2005-04-14 2009-05-19 Snecma Exhaust nozzle for an engine of a flying craft
US7535687B2 (en) 2006-04-13 2009-05-19 Ge Security, Inc. Alarm system sensor topology apparatus and method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH664637A5 (en) * 1982-04-28 1988-03-15 Cerberus Ag METHOD FOR TRANSMITTING MEASURED VALUES IN A MONITORING SYSTEM.

Also Published As

Publication number Publication date
EP0468234B1 (en) 1996-09-25
EP0468234A3 (en) 1992-12-09
EP0468234A2 (en) 1992-01-29
ES2091265T3 (en) 1996-11-01
DE59108219D1 (en) 1996-10-31

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