System and method for fall detection
First Claim
1. A system comprising:
- a sensor attached to a body;
the sensor to acquire sensory data, including acceleration data, anda tool to detect fall of the body in accordance with the acquired sensory data, the tool comprising;
an orientation manager to extract orientation data from the acquired sensory data;
an impact manager to quantitatively compute cumulative high frequency energy of impact data from the acquired sensory data; and
an analyzer to analyze the orientation data and the impact data and to detect a fall, including the analyzer to differentiate the detected fall from an intentional change of posture, including weighting acceleration data extracted from the sensor, the extracted data including impact, orientation, and energy.
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Accused Products
Abstract
Embodiments of the invention relate to spectrally and spatially dissecting accelerometer data from a signal of a motion sensor. Data received from the dissected signal is reduced to statistical averages for selected frequency bands and spatial dimensions. A time segment subject over which the signal was acquired is segmented so that the dissected signal may be evaluated per the segmentation of the time. Change of orientation towards gravity of the sensor is analyzed with respect to a change of orientation from a before impact segment to an after impact segment. The analyzed change in orientation value with respect to a threshold is a factor in determination of a fall of a body to which the sensor is attached.
60 Citations
21 Claims
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1. A system comprising:
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a sensor attached to a body; the sensor to acquire sensory data, including acceleration data, and a tool to detect fall of the body in accordance with the acquired sensory data, the tool comprising; an orientation manager to extract orientation data from the acquired sensory data; an impact manager to quantitatively compute cumulative high frequency energy of impact data from the acquired sensory data; and an analyzer to analyze the orientation data and the impact data and to detect a fall, including the analyzer to differentiate the detected fall from an intentional change of posture, including weighting acceleration data extracted from the sensor, the extracted data including impact, orientation, and energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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providing a processing unit in communication with memory and a data structure to store sensory data, the processing unit to process the sensory data; receiving the sensory data from a sensor attached to a body in communication with the processing unit, the sensory data including acceleration data; detecting fall of the body in accordance with the acquired sensory data, including; extracting orientation data from the acquired sensory data; and quantitatively computing cumulative high frequency energy of impact data from the acquired sensory data; and analyzing orientation data and impact data and detecting a fall, including differentiating the detected fall from an intentional change of posture, including weighting acceleration data extracted from the sensor, the extracted data including;
impact, orientation, and energy.
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17. A computer program product for use with a sensor attached to a body, the sensor to acquire sensory data, the computer program product comprising a non-transitory computer readable storage medium having computer readable program code embodied thereon, which when executed causes a computer to implement the method comprising:
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receiving sensory data from a sensor attached to a body, the sensory data including acceleration data; detecting fall of the body in accordance with the acquired sensory data, including; extracting orientation data from the acquired sensory data; and quantitatively computing cumulative high frequency energy of impact data from the acquired sensory data; and analyzing orientation data and impact data and detecting a fall, including differentiating the detected fall from an intentional change of posture, including weighting acceleration data extracted from the sensor, the extracted data including impact, orientation, and energy. - View Dependent Claims (18, 19, 20, 21)
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Specification