EP 0468234 B1 19960925 - Method for increasing the fault security by risk signal systems
Title (en)
Method for increasing the fault security by risk signal systems
Title (de)
Verfahren zur Erhöhung der Störsicherheit bei Gefahrenmeldeanlagen
Title (fr)
Procédé pour l'élévation de la sécurité de perturbation dans un système de signalisation de risque
Publication
Application
Priority
DE 4023766 A 19900726
Abstract (en)
[origin: EP0468234A2] 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>
IPC 1-7
IPC 8 full level
G08B 26/00 (2006.01); G08B 29/18 (2006.01)
CPC (source: EP)
G08B 26/005 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL
DOCDB simple family (publication)
EP 0468234 A2 19920129; EP 0468234 A3 19921209; EP 0468234 B1 19960925; AT E143519 T1 19961015; DE 59108219 D1 19961031; ES 2091265 T3 19961101
DOCDB simple family (application)
EP 91110971 A 19910702; AT 91110971 T 19910702; DE 59108219 T 19910702; ES 91110971 T 19910702