EP 4337512 A1 20240320 - ELECTRICAL SYSTEM, ARRANGEMENT AND METHOD APPLICABLE TO RAILROAD TRACKS
Title (en)
ELECTRICAL SYSTEM, ARRANGEMENT AND METHOD APPLICABLE TO RAILROAD TRACKS
Title (de)
ELEKTRISCHES SYSTEM, ANORDNUNG UND VERFAHREN FÜR EISENBAHNSCHIENEN
Title (fr)
SYSTÈME ÉLECTRIQUE, AGENCEMENT ET PROCÉDÉ APPLICABLES À DES VOIES FERRÉES
Publication
Application
Priority
- FI 20215568 A 20210512
- FI 2022050297 W 20220505
Abstract (en)
[origin: WO2022238615A1] The present invention relates to a method and arrangement (10) for monitoring rail-road track vacancy or a broken rail. The arrangement comprises a DC voltage source (11 ), feeding DC voltage into the rails (19a-b) of the railroad track, the DC voltage source (11 ) locating in a first location along the railroad track. A dedicated DC/AC converting part (12, 13) is set to trigger an AC signal on and into the rails (19a-b) based on a sensed DC voltage originating from the DC voltage source (11 ), where the dedicated DC/AC converting part (12, 13) locates in a second location along the railroad track. An AC measurement circuitry (14, 15, 16, 17, 18), comprising a high- or a band-pass filter (14) and a detector (18), locates in the first location along the railroad track. The detector (18) senses the received AC signal change, when e.g. a train arrives between the first and second locations.
IPC 8 full level
B61L 1/18 (2006.01); B61L 23/04 (2006.01)
CPC (source: EP FI)
B61L 1/182 (2013.01 - EP FI); B61L 1/185 (2013.01 - EP FI); B61L 1/186 (2013.01 - EP); B61L 1/187 (2013.01 - EP FI); B61L 23/044 (2013.01 - EP FI)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022238615 A1 20221117; EP 4337512 A1 20240320; FI 130791 B1 20240322; FI 20215568 A1 20221113
DOCDB simple family (application)
FI 2022050297 W 20220505; EP 22726150 A 20220505; FI 20215568 A 20210512