EP 1294214 A3 20050216 - Method for lamp monitoring in light signalling systems and light signalling system
Title (en)
Method for lamp monitoring in light signalling systems and light signalling system
Title (de)
Verfahren zur Leuchtmittelüberwachung von Lichtrufsystemen und Lichtrufsystem
Title (fr)
Procédé de surveillance d' une source lumineuse dans un système de signalisation lumineuse et système de signalisation lumineuse
Publication
Application
Priority
DE 10146191 A 20010917
Abstract (en)
[origin: EP1294214A2] The method involves detecting a current flowing through at least one light source (12a.., 20a..) or a correlated parameter during an initialization phase, determining and storing a reference value using the detected value, detecting the current etc. in an operating phase and determining a comparison value, comparing the comparison and reference values and evaluating the comparison result. AN Independent claim is also included for the following: a light call system for care applications.
IPC 1-7
IPC 8 full level
H05B 37/03 (2006.01)
CPC (source: EP)
H05B 47/21 (2020.01)
Citation (search report)
- [Y] US 5717335 A 19980210 - LEE JEONG JUN [KR]
- [Y] EP 0798679 A1 19971001 - ELECTRIC SYSTEM SOCIETE A RESP [FR]
- [Y] DE 3616506 A1 19871119 - HELLA KG HUECK & CO [DE]
- [Y] EP 0534839 A1 19930331 - ELECTRICITE DE FRANCE [FR]
- [A] DE 29520661 U1 19960328 - HELICOM ENTWICKLUNGSGES [DE]
- [A] US 4745339 A 19880517 - IZAWA MINORU [JP], et al
- [A] DE 19905709 A1 20000831 - SIEMENS AG [DE]
- [A] DE 2251881 A1 19740425 - WESTFAELISCHE METALL INDUSTRIE
- [A] DE 19649371 C1 19980402 - SIEMENS AG [DE]
- [A] LUGER S ET AL: "BELEUCHTUNG WIRD BUSFAEHIG", ELEKTRONIK, FRANZIS VERLAG GMBH. MUNCHEN, DE, vol. 41, no. 26, 22 December 1992 (1992-12-22), pages 26 - 30, XP000327405, ISSN: 0013-5658
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)
EP 1294214 A2 20030319; EP 1294214 A3 20050216; DE 10146191 A1 20030410
DOCDB simple family (application)
EP 02020509 A 20020913; DE 10146191 A 20010917