EP 1400427 A1 20040324 - Derailment detecting method and derailment detecting apparatus for rolling stock
Title (en)
Derailment detecting method and derailment detecting apparatus for rolling stock
Title (de)
Verfahren und Gerät für die Entgleisungsdetektion der Schienenfahrzeuge
Title (fr)
Methode et appareillage pour détecter le déraillement des véhicules feroviaires
Publication
Application
Priority
EP 98936719 A 19980810
Abstract (en)
The invention is directed to a derailment detecting method for rolling stock (1), which is applied to rolling stock having a truck (3) which comprises wheels (5) rolling on rails (4), and spring rigging (6), and a carbody (2) to which said truck is attached, said derailment detecting method for rolling stock comprising: a step of detecting vertical acceleration at said carbody (2) above said spring rigging (6) during running of said rolling stock on said rails (4); a step of calculating a vertical displacement amount by double integral of said vertical acceleration every evaluating time, said evaluating time being defined as a time period from a start of descent of said carbody to arrival at half a height <DF>h DIVIDED 2</DF> of said rails, in a free fall of one axle of said wheels (5) by a distance equal to the height (h) of said rails; and a step of determining that said rolling stock (1) is derailed, in the case that said vertical displacement amount is negative and an absolute value thereof is not less than a predetermined reference value. <IMAGE>
IPC 1-7
IPC 8 full level
B61F 9/00 (2006.01); B61K 13/00 (2006.01)
CPC (source: EP)
B61F 9/00 (2013.01); B61K 13/00 (2013.01)
Citation (search report)
[X] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 06 30 June 1997 (1997-06-30)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 03026141 A 19980810; ES 98936719 T 19980810