EP 0529140 B1 19961106 - Binary data transmission method in an alarm signalling system
Title (en)
Binary data transmission method in an alarm signalling system
Title (de)
Verfahren zur Übertragung binärer Daten in einem Gefahrenmeldesystem
Title (fr)
Procédé de transmission de données binaires dans un système de signalisation d'alarmes
Publication
Application
Priority
EP 91114664 A 19910830
Abstract (en)
[origin: EP0529140A1] A method for transmitting binary data in an alarm signalling system comprising a central station (Z), from which at least one dual line (a, b) originates, by means of which a multiplicity of detectors (M1 to Mn) is connected to the central station (Z), devices for transmitting and detecting binary data being provided in the central station (Z) and in the detectors (M1 to Mn), which devices are in each case formed by means of a comparator (K), the switching threshold (Uk) of which is preset, the threshold values of the respective comparators (K) being determined and stored by the central station (Z) in that firstly a synchronisation signal (Sy) for preparing a detector (M) is sent out by the central station (Z) and subsequently a signal (C1; C2) is sent to the detector (M), the amplitude of which signal is systematically changed in such a manner that its value progressively approaches the comparator threshold value (Uk), whereupon this detector (M) outputs a characteristic signal (CA1, CA2) to the central station (Z) when the amplitude value is greater than the threshold value (Uk) and the comparator threshold value (Uk) is determined from the characteristic signal (CA1, CA2) and the systematically variable signal (C1, C2) in the central station (Z). <IMAGE>
IPC 1-7
IPC 8 full level
G08B 25/01 (2006.01); G08B 25/04 (2006.01)
CPC (source: EP)
G08B 25/018 (2013.01); G08B 25/04 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL
DOCDB simple family (publication)
EP 0529140 A1 19930303; EP 0529140 B1 19961106; AT E145080 T1 19961115; DE 59108333 D1 19961212; DK 0529140 T3 19970217; ES 2093663 T3 19970101; GR 3021566 T3 19970228
DOCDB simple family (application)
EP 91114664 A 19910830; AT 91114664 T 19910830; DE 59108333 T 19910830; DK 91114664 T 19910830; ES 91114664 T 19910830; GR 960402846 T 19961107