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US 10,704,933 B2Granted
Integrated angle sensing device
AssigneeInfineon Technologies AG
InventorsLeo Aichriedler, Peter Slama
Life of this patent
Estimating the term…
Abstract
A sensor arrangement includes a sensor element and a magnet module. The sensor element is configured to measure a magnetic field and is positioned within a shaft. The shaft is configured to shield the magnet module and the sensor element. The magnet module is configured to generate the magnetic field. The sensor element is at least partially positioned within the shaft.
Claims21
A sensor arrangement comprising:
- a sensor element located within a sensor module and the sensor element configured to measure a magnetic field,
- a ring shaped magnet positioned about an inner surface of an open portion of a shaft, the ring shaped magnet configured to generate the magnetic field that is measured by the sensor element,
- the shaft being configured to be fully rotated a plurality of times in a direction;
- the sensor module being at least partially positioned within the open portion of the shaft,
- the ring shaped magnet surrounding at least a portion of the sensor element, and
- the shaft being configured to shield the sensor element and the ring shaped magnet from disturbances to the magnetic field.
3 more elements
A sensor system comprising:
- a sensor module having a sensor element configured to provide measurements of a magnetic field,
- the magnetic field, for which the sensor element is configured to provide the measurements, being generated by a ring shaped magnet positioned about an inner surface of an open portion of a shaft,
- the shaft being configured to be fully rotated a plurality of times in a direction,
- the sensor module being at least partially positioned within the open portion of the shaft, and
- at least a portion of the sensor element being surrounded by the ring shaped magnet;
- an interface coupled to the sensor module and configured to transfer magnetic field measurements from the sensor module;
- and
- a control unit configured to determine angular information based on the magnetic field measurements.
5 more elements
A method of operating a sensor device, the method comprising:
- configuring a shaft to have a shaft recess and positioning a ring shaped magnet about an inner surface of the shaft recess,
- the shaft being configured to be fully rotated a plurality of times in a direction, and
- the ring shaped magnet being shielded from one or more disturbances by the shaft;
- integrating a sensor element of a sensor module into the shaft recess,
- the sensor module being shielded from the one or more disturbances by the shaft recess, and
- the ring shaped magnet surrounding at least a portion of the sensor element;
- integrating the sensor module into a case and configuring the case to receive the shaft;
- generating a magnetic field by the ring shaped magnet,
- the magnetic field being enforced by the shaft;
- and
- measuring the magnetic field, generated by the ring shaped magnet, by the sensor module, wherein the sensor element is positioned within the shaft.
8 more elements
Dependencies are inferred from the claim text.