EP 1429038 A1 20040616 - Measuring method for determining the displacement of a movable part of an actuator and device for applying the measuring method
Title (en)
Measuring method for determining the displacement of a movable part of an actuator and device for applying the measuring method
Title (de)
Messverfahren zur Bestimmung der Bewegung eines bewegbaren Teils eines Stellglieds und Vorrichtung zur Anwendung des Messverfahrens
Title (fr)
Procédé pour mesurer le mouvement d'une pièce mobile d'un vérin, et dispositif pour appliquer le procédé
Publication
Application
Priority
NL 1022128 A 20021210
Abstract (en)
Measuring method and device for determining the displacement of a movable part of an actuator such as the axial and/or rotational movement of the piston rod (7) in relation to the cylinder housing (2) with a pressurized medium-operated cylinder (1). Optical means (12) are applied, which can be aimed at the outer surface of the movable part of an actuator, such as the piston rod (7). The light reflected by the movable part (7) is absorbed by an absorbing chip (13) suitable for it, which electronically, by means of a converter (16) produces a signal, from which the position or the velocity of the movable part (7) can be determined. The piston rod (7) can have undergone the usual polishing processing. The optical means (12) comprise the means as they are applied in a computer mouse. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 15/28 (2006.01)
CPC (source: EP)
F15B 15/2876 (2013.01)
Citation (search report)
- [X] DE 10014194 A1 20010125 - LEUZE ELECTRONIC GMBH & CO [DE]
- [X] GB 2335980 A 19991006 - BAMFORD EXCAVATORS LTD [GB]
- [X] DE 8627037 U1 19870108
- [X] GB 2068150 A 19810805 - RANSBURG CORP
- [X] PATENT ABSTRACTS OF JAPAN vol. 012, no. 182 (M - 702) 27 May 1988 (1988-05-27)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 03078838 A 20031205; NL 1022128 A 20021210