EP 0918009 B1 20040714 - Rail contact for axle counting device
Title (en)
Rail contact for axle counting device
Title (de)
Schienenkontakt für eine Achszähleinrichtung
Title (fr)
Contact placé sur la voie pour compteur d'essieux
Publication
Application
Priority
DE 19745436 A 19971015
Abstract (en)
[origin: DE19745436A1] The rail contact has a receiver coil for an alternating the electromagnetic field which is generated by two transmitting coils. A voltage supply device supplies at least one of the two transmitting coils with a voltage that can be freely selected inside a previously established range. The rail contact has a store for a reference signal pattern, and a comparator for the received voltage with the stored voltage pattern. A computer unit controls the voltage supply using the result of the comparison so that the pattern of the received voltage that can be found by a wheel passing through at the receiver coil is as near as possible to the reference signal pattern.
IPC 1-7
IPC 8 full level
B61L 1/16 (2006.01)
CPC (source: EP)
B61L 1/165 (2013.01); B61L 1/167 (2013.01); B61L 1/169 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IT LI NL PT SE
DOCDB simple family (publication)
EP 0918009 A2 19990526; EP 0918009 A3 20010926; EP 0918009 B1 20040714; AT E270988 T1 20040715; DE 19745436 A1 19990422; DE 59811668 D1 20040819; ES 2221139 T3 20041216
DOCDB simple family (application)
EP 98440184 A 19980828; AT 98440184 T 19980828; DE 19745436 A 19971015; DE 59811668 T 19980828; ES 98440184 T 19980828