Global Patent Index - EP 0724799 A1

EP 0724799 A1 19960807 - MAINS SIGNALLING SYSTEMS

Title (en)

MAINS SIGNALLING SYSTEMS

Title (de)

SYSTEM ZUR SIGNALISATION ÜBER DAS STROMVERSORGUNGSNETZ

Title (fr)

SYSTEMES DE SIGNALISATION D'UN RESEAU DE DISTRIBUTION ELECTRIQUE

Publication

EP 0724799 A1 19960807 (EN)

Application

EP 94918952 A 19940627

Priority

  • GB 9401391 W 19940627
  • GB 9313199 A 19930625

Abstract (en)

[origin: WO9501030A1] A remote mains meter reading system comprises a mains system (10, 11, 13, 14), a central station (LC), and a plurality of meters (U1-U11) communicating with the central station by means of messages passed over the mains system. All of the meters act also as message forwarding (relay) units, but knowledge of the topology of the system (i.e. which meters can communicate with which) is known only to the central station. All messages are sent out by, and return to, the central station, the message format includes a list of meters through which the message is to pass. The central station can send out a variety of enquiry (SEARCH) messages to determine the system topology, assign labels to meters, etc. If the mains system includes link boxes coupling different areas together, these boxes preferably filter out messages and includes link units which controllably couple the different areas together.

IPC 1-7

H04L 12/56; H04Q 9/00; H04B 3/54

IPC 8 full level

H04B 3/54 (2006.01); H04L 45/02 (2022.01); H04L 45/42 (2022.01)

CPC (source: EP)

H04L 45/02 (2013.01); H04L 45/26 (2013.01); H04L 45/42 (2013.01)

Citation (search report)

See references of WO 9501030A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9501030 A1 19950105; AU 7040094 A 19950117; CA 2166113 A1 19950105; EP 0724799 A1 19960807; GB 9313199 D0 19930811; JP H09501804 A 19970218; NO 955229 D0 19951221; NO 955229 L 19960214; NZ 267678 A 19980427; ZA 944611 B 19950614

DOCDB simple family (application)

GB 9401391 W 19940627; AU 7040094 A 19940627; CA 2166113 A 19940627; EP 94918952 A 19940627; GB 9313199 A 19930625; JP 50260295 A 19940627; NO 955229 A 19951221; NZ 26767894 A 19940627; ZA 944611 A 19940627