Patent ID: 9689712
Date: 2017-06-27
CPC Classifications: G01D,H02K

Claim:
1. A position detection device for detecting a position of a movable element in a drive device, comprising: a carrier having two detecting modules for detecting a position of the movable element, the detecting modules being arranged side-by-side at a predetermined distance and without overlapping; the detecting modules each comprising an energizing coil and a receiving coil assigned to the energizing coil and comprising a geometry having one period, an excitation pulse of the energizing coil inducing an electrical voltage in the receiving coil; the detecting modules being configured to detect a change in the electrical voltage induced in the receiving coil owing to the moveable element and to output a position signal when detecting the movable element, so that during a shift of the movable element along the two detecting modules over the predefined distance this distance may be measured as a reference distance on the basis of the position signals.