EP 1292479 A1 20030319 - METHOD AND APPARATUS FOR DETECTING ROUNDNESS DEFECTS IN A RAILWAY VEHICLE WHEEL
Title (en)
METHOD AND APPARATUS FOR DETECTING ROUNDNESS DEFECTS IN A RAILWAY VEHICLE WHEEL
Title (de)
VERFAHREN UND VORRICHTUNG ZUR DETEKTION VON RUNDHEITSDEFEKTEN IN RÄDERN VON EISENBAHNFAHRZEUGEN
Title (fr)
PROCEDE ET APPAREIL PERMETTANT DE DETECTER DES DEFAUTS DE RONDEUR SUR UNE ROUE DE VEHICULE SUR RAILS
Publication
Application
Priority
- EP 0106351 W 20010605
- IT TO20000535 A 20000606
Abstract (en)
[origin: WO0194175A1] A motion sensor (3) is associated with a wheel (1) of a railway vehicle for generating a signal (M) indicative of the motion of the wheel along a vertical axis (x). A rotation sensor (6) provides a signal (S) indicative of the rotational speed of the wheel (1). The motion (M) and rotational speed (S) signals are received by an electronic processing unit (E) which correlates these signals using the speed signal (S) to divide the vertical motion signal (M) in subsequent time portions or frames, each corresponding to a complete rotation of the wheel. A mean of the subsequent time portions of the motion signal stored over a period of time is calculated to identify actual or incipient roundness defects of the wheel.
IPC 1-7
IPC 8 full level
B61K 9/12 (2006.01); G01B 7/28 (2006.01); G01B 21/12 (2006.01); G01M 17/10 (2006.01); G01B 21/20 (2006.01)
CPC (source: EP US)
B61K 9/12 (2013.01 - EP US); G01B 7/282 (2013.01 - EP US); G01B 21/12 (2013.01 - EP US); G01M 17/10 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE ES FR GB LI SE
DOCDB simple family (publication)
WO 0194175 A1 20011213; CN 1446160 A 20031001; EP 1292479 A1 20030319; IT 1320400 B1 20031126; IT TO20000535 A0 20000606; IT TO20000535 A1 20011206; JP 2003535755 A 20031202; US 2003160133 A1 20030828
DOCDB simple family (application)
EP 0106351 W 20010605; CN 01813771 A 20010605; EP 01943475 A 20010605; IT TO20000535 A 20000606; JP 2002501708 A 20010605; US 29768303 A 20030422