EP 1425941 A1 20040609 - A LIGHTING CIRCUIT THAT USES THE SUPPLY CURRENT IN ORDER TO EXCHANGE LIGHTING LAMP CONTROL MESSAGES
Title (en)
A LIGHTING CIRCUIT THAT USES THE SUPPLY CURRENT IN ORDER TO EXCHANGE LIGHTING LAMP CONTROL MESSAGES
Title (de)
FERNSTEUERUNG EINES BELEUCHTUNGSSYSTEMS ÜBER EINE AUF DEM NETZ ÜBERTRAGENE TRÄGERWELLE
Title (fr)
RESEAU D'ECLAIRAGE UTILISANT LE COURANT D'ALIMENTATION POUR L'ECHANGE DES MESSAGES DE CONTROLE DES LAMPES D'ECLAIRAGE
Publication
Application
Priority
- FR 0202919 W 20020821
- FR 0110968 A 20010821
Abstract (en)
[origin: WO03019989A1] The invention relates to a lighting circuit comprising a high-voltage distribution line (12), to which a plurality of low-voltage networks (16, 18, 20) are connected by means of low-frequency transformers (20, 22, 24). Each of said networks consists of a low-voltage distribution line (42), to which lighting lamps (44, 46, 48) are connected by means of lamp control modules (50, 52, 54). Transmission/reception means (34, 36) are used to exchange messages with the lamp control modules using the low-frequency supply current that is flowing through the lines as carrier current. A coupling unit (28, 30 or 32) is connected between the input/output terminals of each of the low-frequency transformers. Said coupling unit comprises voltage transformation means, which can transmit the control messages with minimum attenuation, and means for blocking the low-frequency supply current on either side of the coupling unit.
IPC 1-7
IPC 8 full level
H05B 37/02 (2006.01)
CPC (source: EP)
H05B 47/185 (2020.01)
Citation (search report)
See references of WO 03019989A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03019989 A1 20030306; CN 1545825 A 20041110; EP 1425941 A1 20040609; FR 2828982 A1 20030228; FR 2828982 B1 20040528
DOCDB simple family (application)
FR 0202919 W 20020821; CN 02816350 A 20020821; EP 02774880 A 20020821; FR 0110968 A 20010821