Device for determining an angle of rotation and/or a torque, and method for operating the device

1. A device for determining an angle of rotation and/or a torque of a rotating part, the device comprising:

at least one angle detector to detect an angular position of the rotating part relative to a reference position; and

at least one indexer to index at a predetermined rotation or a 360° rotation of the rotating part relative to the reference position,

wherein the at least one angle detector comprises a rotor fixedly connected with the rotating part, the rotor having a base body for attachment to the rotating part and vanes extending radially outward from the base body,

wherein the rotor has a marker that is detectable via the at least one indexer, and

wherein the at least one angle detector is designed as an inductive sensor and the at least one indexer is designed as a capacitive sensor, or, the at least one angle detector is designed as a capacitive sensor and the at least one indexer is designed as an inductive sensor.

2. The device according to claim 1 , wherein a single one of the vanes of the rotor has the marker which is detectable via the at least one indexer.

3. The device according to claim 1 , wherein, in a detection area of the at least one indexer, a single one of the vanes has an opening that is delimited by a circumferential edge, the opening being the marker that is detectable via the at least one indexer, or, all of the vanes except for a single one of the vanes have an opening that is delimited by a circumferential edge, such that the single one of the vanes without the opening is the marker that is detectable via the at least one indexer.

4. The device according to claim 1 , wherein a single one of the vanes extends radially further outward from the base body, than the other vanes, into a detection area of the at least one indexer, such that the single one of the vanes that extends radially further outward from the base body is the marker that is detectable via the at least one indexer, or, all of the vanes except for a single one of the vanes extend further radially outward from the base body into a detection area of the at least one indexer, such that the single one of the vanes that does not extend further radially outward from the base body is the marker that is detectable via the at least one indexer.

5. The device according to claim 1 , wherein the at least one angle detector and the at least one indexer are each arranged at least partially on a common printed circuit board, wherein the common printed circuit board is designed as a multilayer circuit board and the at least one angle detector is arranged on at least one first layer of the multilayer circuit board and the at least one indexer is arranged on at least one of the second layer of the multilayer circuit board that is different from the at least one first layer.

6. The device according to claim 5 , wherein the at least one second layer is designed as a shield.

7. A method comprising:

providing a device according to claim 1 ; and

determining in an evaluation unit, as a function of the detection of the marker detectable via the at least one indexer, a 360° rotation of the rotating part relative to the reference position.

8. The method according to claim 7 , wherein, in order to determine the 360° rotation of the rotating part relative to the reference position, at least one resonance frequency of at least one resonant circuit is evaluated in the evaluation unit.

9. The method according to claim 8 , wherein the at least one resonant circuit includes two resonant circuits and wherein at least one resonance frequency difference of the two resonant circuits is evaluated in the evaluation unit.

10. The device according to claim 3 , wherein the opening of the single one of the vanes is a through-hole or the opening of all of the vanes except for the single one of the vanes are through-holes.