The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2006
Filed:
May. 07, 2004
Raimund Becker, Bodnegg, DE;
Klaus Unger, Ebersbach-Musbach, DE;
Bjöern Ostertag, Ravensburg, DE;
Jaromir Palata, Langenargen, DE;
Raimund Becker, Bodnegg, DE;
Klaus Unger, Ebersbach-Musbach, DE;
Bjöern Ostertag, Ravensburg, DE;
Jaromir Palata, Langenargen, DE;
i f m electronic GmbH, Essen, DE;
Abstract
A process for determining the position of an influencing element, using an inductive position sensor, several coils, a capacitor, an amplifier element, at least one changeover switch and an evaluation unit, a selected one of the coils and the capacitor forming a tuned circuit and the tuned circuit and the amplifier element forming an oscillator. Each coil is connected in succession to the capacitor and its impedance measured by the evaluation unit as a function of the position of the influencing element relative to the coil and that coil which is able to determine the location of the influencing element is determined. In further operation, only the impedance of the determined coil or of the tuned circuit formed therewith is measured and used to determine the position of the influencing element, and if the impedance of determined coil changes beyond a threshold amount, the impedance of at least one other coil or tuned circuit is measured.