EP 0749884 A3 19980107 - A control system for railroad colour light signalling devices
Title (en)
A control system for railroad colour light signalling devices
Title (de)
Steueranlage für Eisenbahnfarblichtsignalvorrichtungen
Title (fr)
Système de commande pour dispositif lumineux de signalisation à couleur de chemins de fer
Publication
Application
Priority
IT TO950513 A 19950620
Abstract (en)
[origin: EP0749884A2] A control system wherein a central control station (4) is connected, by means of a bipolar cable (9), to at least one peripheral station (7), coupled with at least one railroad signal (11), provided with three light sources (13r, 13y, 13g), respectively, red, yellow and green, obtained from incandescence lamps. Each incandescence lamp (13r, 13y, 13g) is capable of being supplied by a respective band-pass filter (31, 32, 33), receiving, at its input, the signal sent from cable (9). Central station (4) is fitted with a signal generator (18), capable of supplying on cable (9) a periodic alternating signal, whose frequency (Fl, F2, F3) can be chosen among three different frequencies (Fl, F2, F3), each whereof corresponds to the central frequency of a respective band-pass filter (31, 32, 33) of peripheral station (7). <IMAGE>
IPC 1-7
IPC 8 full level
B61L 7/06 (2006.01); G05B 9/02 (2006.01); B61L 7/10 (2006.01); G05B 19/406 (2006.01)
CPC (source: EP)
Citation (search report)
- [XA] DE 3223779 A1 19840105 - LICENTIA GMBH [DE]
- [A] GB 516138 A 19391222 - VER EISENBAHN SIGNALWERKE GMBH
Designated contracting state (EPC)
FR GB IE SE
DOCDB simple family (publication)
EP 0749884 A2 19961227; EP 0749884 A3 19980107; EP 0749884 B1 20030226; CN 1145912 C 20040414; CN 1153121 A 19970702; CZ 183696 A3 19970115; CZ 292973 B6 20040114; IT 1276423 B1 19971031; IT TO950513 A0 19950620; IT TO950513 A1 19961220
DOCDB simple family (application)
EP 96109890 A 19960619; CN 96111718 A 19960620; CZ 183696 A 19960620; IT TO950513 A 19950620