Fall detection using sensor fusion
First Claim
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1. A method for fall detection, the method comprising:
- in response to any of first and second acceleration magnitude thresholds being satisfied, determining whether a height difference before and after impact of a fall satisfies a threshold and whether an angle threshold between an acceleration vector and a calibration vector is satisfied; and
determining whether a maximum value of an activity metric is less than another threshold, wherein if the maximum value of the activity metric is less than the another threshold and the height difference before and after impact satisfies the threshold, the fall detection is confirmed.
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Abstract
A method and system for fall detection using sensor fusion are disclosed. In a first aspect, the method comprises in response to any of first and second acceleration magnitude thresholds being satisfied, determining whether a height difference before and after impact of a fall satisfies a threshold and whether an angle threshold between an acceleration vector and a calibration vector is satisfied. In a second aspect, the system comprises a processing system and an application coupled to the processing system, wherein the application carries out the steps of the method.
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Citations
19 Claims
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1. A method for fall detection, the method comprising:
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in response to any of first and second acceleration magnitude thresholds being satisfied, determining whether a height difference before and after impact of a fall satisfies a threshold and whether an angle threshold between an acceleration vector and a calibration vector is satisfied; and determining whether a maximum value of an activity metric is less than another threshold, wherein if the maximum value of the activity metric is less than the another threshold and the height difference before and after impact satisfies the threshold, the fall detection is confirmed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wireless sensor device for fall detection, the wireless sensor device comprising:
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a processing system; and an application to be executed by the processing system, wherein the application; in response to any of first and second acceleration magnitude thresholds being satisfied, determines whether a height difference before and after impact of a fall satisfies a threshold and whether an angle threshold between an acceleration vector and a calibration vector is satisfied; and determining whether a maximum value of an activity metric is less than another threshold, wherein if the maximum value of the activity metric is less than the another threshold and the height difference before and after impact satisfies the threshold, the fall detection is confirmed. - View Dependent Claims (16, 17, 18, 19)
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Specification