EP 1685365 A2 20060802 - CONTACTLESS DISPLACEMENT MEASURING SYSTEM
Title (en)
CONTACTLESS DISPLACEMENT MEASURING SYSTEM
Title (de)
BERÜHRUNGSLOS ARBEITENDES WEGMESSSYSTEM
Title (fr)
SYSTEME DE MESURE DE DEPLACEMENT FONCTIONNANT SANS CONTACT
Publication
Application
Priority
- DE 2004002408 W 20041028
- DE 10354375 A 20031120
Abstract (en)
[origin: WO2005052506A2] The invention relates to a contactless displacement measuring system comprising a sensor (2) which contains a measuring coil (1) that can be subjected to an alternating current, said measuring coil (1) having at least two voltage taps (7). The system also comprises an electrically and/or magnetically conductive measurement object (4) that is allocated to the sensor (2) and an evaluation circuit (3). The sensor (2) and the measurement object (4) are displaceable in relation to one another in the longitudinal direction of the measuring coil (1). The invention is characterised in that the measurement object (4) has at least one marking (8) that influences the impedance of the measuring coil (1) between two voltage taps (7), so that the evaluation circuit (3) produces an output signal (9) that correlates with the position of the measurement object (4) in relation to the voltage taps (7).
IPC 8 full level
G01D 5/20 (2006.01)
CPC (source: EP US)
G01D 5/2013 (2013.01 - EP US); G01D 5/202 (2013.01 - EP US); G01D 2205/774 (2021.05 - EP)
Citation (search report)
See references of WO 2005052506A2
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 2005052506 A2 20050609; WO 2005052506 A3 20081211; CN 101341377 A 20090107; CN 101341377 B 20110105; DE 10354375 A1 20050630; EP 1685365 A2 20060802; US 2006202682 A1 20060914; US 7602175 B2 20091013
DOCDB simple family (application)
DE 2004002408 W 20041028; CN 200480033985 A 20041028; DE 10354375 A 20031120; EP 04790056 A 20041028; US 43643406 A 20060518