Step counter devices and step counting methods
First Claim
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1. A step counter device comprising:
- an accelerometer configured to determine an acceleration in each axis of a plurality of axes;
a dominant axis determination circuit configured to determine one axis of the plurality of axes to be a dominant axis based on determining, for each axis of the plurality of axes, a first plurality of criteria for the respective axis comprising a criterion indicating whether a frequency of a periodic signal of the acceleration in the respective axis is within a first pre-determined range, a criterion indicating whether a frequency jitter of the periodic signal of the acceleration in the respective axis between cycles within the periodic signal is within a second pre-determined range, a criterion indicating whether a variation in an amplitude of the acceleration in the respective axis between the cycles is within a third pre-determined range, a criterion indicating whether the acceleration in the respective axis is higher than a pre-determined threshold, and a criterion indicating whether periodic signal of the acceleration in the respective axis includes at least a pre-determined number of cycles;
wherein the axis that fulfils the first plurality of criteria is determined by the dominant axis determination circuit to be the dominant axis;
a step number determination circuit configured to determine a number of steps based on determining whether the determined dominant axis fulfils a second plurality of criteria comprisinga criterion indicating whether a frequency of a periodic signal of the acceleration in the respective axis is within a first pre-determined range, a criterion indicating whether a frequency jitter of the periodic signal of the acceleration in the respective axis between cycles within the periodic signal is within a second pre-determined range, a criterion indicating whether a variation in an amplitude of the acceleration in the respective axis between the cycles is within a third pre-determined range, and a criterion indicating whether the acceleration in the respective axis is higher than a pre-determined threshold;
wherein a step count is registered when the determined dominant axis fulfils the second plurality of criteria.
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Abstract
According to various embodiments, a step counter device may be provided. The step counter device may include an accelerometer configured to determine an acceleration in each axis of a plurality of axes; a dominant axis determination circuit configured to determine one axis of the plurality of axis as a dominant axis based on determining, for each axis of the plurality of axis, a first plurality of criteria for the respective axis; and a step number determination circuit configured to determine a number of steps based on determining a second plurality of criteria for the dominant axis.
35 Citations
18 Claims
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1. A step counter device comprising:
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an accelerometer configured to determine an acceleration in each axis of a plurality of axes; a dominant axis determination circuit configured to determine one axis of the plurality of axes to be a dominant axis based on determining, for each axis of the plurality of axes, a first plurality of criteria for the respective axis comprising a criterion indicating whether a frequency of a periodic signal of the acceleration in the respective axis is within a first pre-determined range, a criterion indicating whether a frequency jitter of the periodic signal of the acceleration in the respective axis between cycles within the periodic signal is within a second pre-determined range, a criterion indicating whether a variation in an amplitude of the acceleration in the respective axis between the cycles is within a third pre-determined range, a criterion indicating whether the acceleration in the respective axis is higher than a pre-determined threshold, and a criterion indicating whether periodic signal of the acceleration in the respective axis includes at least a pre-determined number of cycles; wherein the axis that fulfils the first plurality of criteria is determined by the dominant axis determination circuit to be the dominant axis; a step number determination circuit configured to determine a number of steps based on determining whether the determined dominant axis fulfils a second plurality of criteria comprising a criterion indicating whether a frequency of a periodic signal of the acceleration in the respective axis is within a first pre-determined range, a criterion indicating whether a frequency jitter of the periodic signal of the acceleration in the respective axis between cycles within the periodic signal is within a second pre-determined range, a criterion indicating whether a variation in an amplitude of the acceleration in the respective axis between the cycles is within a third pre-determined range, and a criterion indicating whether the acceleration in the respective axis is higher than a pre-determined threshold; wherein a step count is registered when the determined dominant axis fulfils the second plurality of criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A step counting method comprising:
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determining an acceleration in each axis of a plurality of axes; determining one axis of the plurality of axes to be a dominant axis based on determining, for each axis of the plurality of axes, a first plurality of criteria for the respective axis comprising a criterion indicating whether a frequency of a periodic signal of the acceleration in the respective axis is within a first pre-determined range, a criterion indicating whether a frequency jitter of the periodic signal of the acceleration in the respective axis between cycles within the periodic signal is within a second pre-determined range, a criterion indicating whether a variation in an amplitude of the acceleration in the respective axis between the cycles is within a third pre-determined range, a criterion indicating whether the acceleration in the respective axis is higher than a pre-determined threshold, and a criterion indicating whether periodic signal of the acceleration in the respective axis includes at least a pre-determined number of cycles; wherein the axis that fulfils the first plurality of criteria is determined to be the dominant axis; determining a number of steps based on determining whether the determined dominant axis fulfils a second plurality of criteria comprising a criterion indicating whether a frequency of a periodic signal of the acceleration in the respective axis is within a first pre-determined range, a criterion indicating whether a frequency jitter of the periodic signal of the acceleration in the respective axis between cycles within the periodic signal is within a second pre-determined range, a criterion indicating whether a variation in an amplitude of the acceleration in the respective axis between the cycles is within a third pre-determined range, and a criterion indicating whether the acceleration in the respective axis is higher than a pre-determined threshold; wherein a step count is registered when the determined dominant axis fulfils the second plurality of criteria. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification