GR3023171T3 - Danger signalling devices connected in a loop - Google Patents

Danger signalling devices connected in a loop

Info

Publication number
GR3023171T3
GR3023171T3 GR970400828T GR970400828T GR3023171T3 GR 3023171 T3 GR3023171 T3 GR 3023171T3 GR 970400828 T GR970400828 T GR 970400828T GR 970400828 T GR970400828 T GR 970400828T GR 3023171 T3 GR3023171 T3 GR 3023171T3
Authority
GR
Greece
Prior art keywords
line
primary signalling
signalling
loop
primary
Prior art date
Application number
GR970400828T
Other languages
Greek (el)
Inventor
Otto Walter Dipl-Ing Moser
Klaus Kaiser
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 GR3023171T3 publication Critical patent/GR3023171T3/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

Abstract

A multiplicity of primary signalling lines (MPL1,...) with respective hazard detectors (elements E1 to En) is connected at a signalling centre (Z) by means of a respective line switching unit (LAE). The respective end (e) of at least a plurality (m) of primary signalling lines (MPL1 to MPLm) is connected at its remote end to a loop connection element (SAE) which, in turn, is connected with only one primary signalling return line (MPRL) via an additional line connection unit (LAES) at the centre (Z). The loop connection element (SAE) exhibits a monitoring and control unit (KSE) which, when necessary, connects the relevant primary signalling line (MPL) by means of a line change-over switch (LU) to the primary signalling return line (MPRL) via an associated terminating element (EA). <IMAGE>
GR970400828T 1991-07-02 1997-04-18 Danger signalling devices connected in a loop GR3023171T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91110973A EP0521180B1 (en) 1991-07-02 1991-07-02 Danger signalling devices connected in a loop

Publications (1)

Publication Number Publication Date
GR3023171T3 true GR3023171T3 (en) 1997-07-30

Family

ID=8206889

Family Applications (1)

Application Number Title Priority Date Filing Date
GR970400828T GR3023171T3 (en) 1991-07-02 1997-04-18 Danger signalling devices connected in a loop

Country Status (5)

Country Link
EP (1) EP0521180B1 (en)
AT (1) ATE148248T1 (en)
DE (1) DE59108510D1 (en)
ES (1) ES2097167T3 (en)
GR (1) GR3023171T3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817089B2 (en) * 1978-04-19 1980-12-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Alarm system
US4209666A (en) * 1978-10-03 1980-06-24 Lawton Richard A Multiplexing system line fault isolation and identification
GB8431883D0 (en) * 1984-12-18 1985-01-30 Gent Ltd Transmission system
DE3637681A1 (en) * 1986-11-05 1988-05-19 Siemens Ag Alarm signalling system according to the pulse signalling system

Also Published As

Publication number Publication date
EP0521180A1 (en) 1993-01-07
DE59108510D1 (en) 1997-03-06
ES2097167T3 (en) 1997-04-01
ATE148248T1 (en) 1997-02-15
EP0521180B1 (en) 1997-01-22

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