Patent ID: 9581425
Date: 2017-02-28
CPC Classifications: G01B,G01D

Claim:
1. A sensor comprising: a primary coil; two secondary coils; wherein an excitation signal may be applied to the primary coil and an output signal depending on a position of a coupling element may be induced in each secondary coil; and an evaluator for evaluating the output signals of the secondary coils, wherein the evaluator is configured to evaluate a phase offset between the output signals, and to provide a sensor output signal proportional to the phase offset indicating the position or a change in position of the coupling element, wherein the evaluator is configured to provide, at a first phase offset, a first sensor output signal representing a first position or change in position of the coupling element; wherein the evaluator is configured to provide, at a second phase offset, a second sensor output signal representing a second position or change in position of the coupling element; wherein the evaluator is configured to provide, at a third phase offset, a third sensor output signal representing a third position or change in position of the coupling element; wherein in the case of a directly proportional sensor output signal, the third phase offset is greater than the second phase offset, and the third position or change in position is greater than the second position or change in position, and the second phase offset is greater than the first phase offset, and the second position or change in position is greater than the first position or change in position; or wherein in the case of an indirectly proportional sensor output signal, the third phase offset is greater than the second phase offset, and the third position or change in position is smaller than the second position or change in position and the second phase offset is greater than the first phase offset, and the second position or change in position is smaller than the first position or change in position.