Device and method for determining a relative deflection
AssigneeRobert Bosch GmbH
InventorsMathias Kimmerle, Michael Kleinknecht, Remigius Has, Wolfgang Welsch
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Abstract
A device is configured to determine a relative deflection of two transmitter elements by a sensor element. The transmitter elements are arranged at the sensor element. The deflection of the transmitter elements with respect to one another at the sensor element can be determined based on a degree of overlap of conductive regions of the transmitter elements by the sensor element.
Claims20
A device for determining a relative deflection of two transmitter elements, the device comprising:
- a first transmitter element and a second transmitter element;
- and
- a sensor element,
- wherein the first and the second transmitter elements are arranged at the sensor element,
- wherein each of the first and the second transmitter elements comprises a plurality of conductive component regions and a plurality of nonconductive component regions,
- wherein deflection of the first transmitter element with respect to the second transmitter element is determinable by a degree of overlap of the plurality of the conductive component regions of the first and the second transmitter elements by the sensor element, and wherein:
- the sensor element comprises at least one coil,
- the plurality of conductive component regions of the first and the second transmitter elements have surfaces facing the sensor element, and
- the surfaces of the plurality of conductive component regions of first and the second transmitter elements have shapes and sizes substantially identical to a shape and a size of a sensing area of the at least one coil.
A method for determining a relative deflection of two transmitter elements with a device comprising the two transmitter elements arranged at a sensor element and at least one assigned control unit, the method comprising:
- establishing a magnetic field with the sensor element, the sensor element including at least one coil;
- positioning the two transmitter elements at least partially within the magnetic field, wherein both of the transmitter elements comprise a plurality of conductive component regions and a plurality of nonconductive component regions, wherein the plurality of conductive component regions of the two transmitter elements have surfaces facing the sensor element, and wherein the surfaces of the plurality of conductive component regions have shapes and sizes substantially identical to a shape and a size of a sensing area of the at least one coil;
- determining a relationship between a range of resonant frequencies of a resonant circuit including the sensor element and a relative deflection between the two transmitter elements;
- determining a resonant frequency of the resonant circuit including the sensor element within the range of resonant frequencies;
- assigning a relative deflection of the first transmitter element with respect to the second transmitter element corresponding to the resonant frequency based upon the determined relationship;
- and
- outputting and/or storing the relative deflection of the first transmitter element with respect to the second transmitter element.
A device for determining a relative deflection of two transmitter elements, the device comprising:
- two linearly movable transmitter elements;
- and
- a sensor element, wherein
- the transmitter elements are arranged at the sensor element,
- each of the transmitter elements comprises a plurality of conductive component regions and a plurality of nonconductive component regions,
- deflection of the transmitter elements with respect to one another is determinable by the device based upon a defined relationship between a range of resonant frequencies of a resonant circuit including the sensor element and a relative deflection between the two transmitter elements, and
- both of the transmitter elements, in a manner offset vertically with respect to one another, are arranged above the sensor element.
A device for determining a relative deflection of two transmitter elements, the device comprising:
- two linearly movable transmitter elements;
- and
- a sensor element with at least one coil, wherein
- the transmitter elements are arranged at the sensor element,
- each of the transmitter elements comprises a plurality of conductive component regions and a plurality of nonconductive component regions,
- deflection of the transmitter elements with respect to one another is determinable by a degree of overlap of the plurality of conductive component regions of the transmitter elements by the sensor element,
- the plurality of conductive regions of the transmitter elements have surfaces facing the sensor element,
- the surfaces of the conductive regions of the transmitter elements have substantially identical dimensions, and
- the surfaces of the transmitter elements have substantially identical shapes and sizes to a shape and a size of a sensing area of the at least one coil.
Dependencies are inferred from the claim text.