EP 0361298 B1 19961030 - Collecting system of alarms from a group of stations
Title (en)
Collecting system of alarms from a group of stations
Title (de)
Systemeinrichtung zur Sammlung von Alarmsignalen einer Stationskette
Title (fr)
Système de collecte des alarmes d'un ensemble de stations
Publication
Application
Priority
FR 8812534 A 19880926
Abstract (en)
[origin: EP0361298A1] A central station (SC) is connected in series with the stations by a looped connection comprising a message loop (BM), a clock-signal loop (BH) and a state-control loop (BCE). Each station comprises an interface (I) connected to the various loops of the connection. The message loop routes messages transmitted by the central station destined for at least one interface, the responses from the interfaces, and messages transmitted by the interfaces destined for the central station. The clock-signal loop routes a clock signal transmitted by the central station and the state-control loop routes a state-control signal transmitted by the central station, this signal having a first value for a drive mode of operation and a second value for a reserve mode of operation of the interfaces; the passing from the first to the second value enables the control of a reset to zero of the interfaces. The clock and state-control signals have the same circulation sense, the messages having an inverse circulation sense.
IPC 1-7
IPC 8 full level
G08B 25/04 (2006.01); G08B 26/00 (2006.01)
CPC (source: EP US)
G08B 25/045 (2013.01 - EP US); G08B 26/005 (2013.01 - EP US)
Citation (examination)
(IEE PROCEEDINGS-G/ELECTRONIC CIRCUITS AND SYSTEMS) vol. 135, no. 1, part G, février 1988, pages 1 - 10, Stevenage, Herts., GB; A.J. AL-KHALILI et al.: "Multiple single-chip microcomputer approach to fire detecting and monitoring system"
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0361298 A1 19900404; EP 0361298 B1 19961030; AT E144852 T1 19961115; AU 4174489 A 19900329; AU 610757 B2 19910523; CA 1318376 C 19930525; DE 68927400 D1 19961205; DE 68927400 T2 19970227; ES 2094117 T3 19970116; FR 2637107 A1 19900330; FR 2637107 B1 19940513; US 4994788 A 19910219
DOCDB simple family (application)
EP 89117377 A 19890920; AT 89117377 T 19890920; AU 4174489 A 19890925; CA 612836 A 19890925; DE 68927400 T 19890920; ES 89117377 T 19890920; FR 8812534 A 19880926; US 41237589 A 19890926