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US 2013/0211764 A1Published application
Auto-calibration of acceleration sensors
AssigneeInfineon Technologies AG
InventorChristoph STEINER
Life of this patent
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Abstract
Representative implementations of devices and techniques provide calibration for a sensor. The calibration includes adapting an output signal of the sensor based on acceleration components at the sensor and a rotational frequency of the sensor.
Claims26
A method of calibrating a sensor, comprising:
- receiving an output signal of the sensor, the output signal comprising one or more acceleration components acting at the sensor;
- receiving a rotational frequency of the sensor;
- calculating an acceleration component due to a centrifugal force acting at the sensor, based on the rotational frequency of the sensor;
- and
- calibrating the sensor based on the output signal of the sensor and the calculated acceleration component due to the centrifugal force.
2 more elements
A system, comprising:
- a sensor coupled to a rotating object, the sensor having at least one sensitivity axis in a radial direction co-planar to the rotating object, the sensor arranged to detect an acceleration at the sensor;
- and
- a processor coupled to the sensor, the processor arranged to receive an output signal from the sensor, to calculate an acceleration component due to a centrifugal force acting at the sensor, the calculation based on a rotational frequency of the sensor, and to calibrate the sensor based on the output signal and the calculated acceleration due to the centrifugal force.
At least one computer-accessible storage device comprising computer-executable instructions that, when executed by a processor, direct the processor to perform operations including:
- receive an output signal of a sensor coupled to a rotating object, the output signal comprising a first acceleration component due to a centrifugal force acting at the sensor and a second acceleration component due to a gravitational force acting at the sensor;
- determine a rotational frequency of the sensor based on the second acceleration component due to the gravitational force acting at the sensor;
- model a relationship of the output signal of the sensor and the rotational frequency of the sensor;
- and
- adapt the output signal of the sensor based on the model of the relationship.
2 more elements
Dependencies are inferred from the claim text.