Method and system to improve accuracy of fall detection using multi-sensor fusion
AssigneeNxt-Id, Inc.
InventorDavid Tunnell
Life of this patent
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Abstract
A system for determining that a monitored person has fallen. The system includes sensors for measuring historic parameters that are indicative of a prior condition of the monitored person during a prior time interval, and for measuring current parameters that are indicative of a current condition of the monitored person. An analysis component determines statistical values based on the historic parameters, analyzes the current sensed parameter values relative to those statistical values, and determines whether the monitored person may fall or has fallen.
Claims24
A system for determining that a monitored person has fallen, the system comprising:
- sensors each for producing prior sensed parameter values during a prior time interval that are indicative of a prior condition of the monitored person, and for producing current sensed parameter values during a current time interval that are indicative of a current condition of the monitored person;
- and
- an analysis component for determining statistical values based on the prior sensed parameter values and for analyzing the current sensed parameter values relative to the statistical values and for determining whether the monitored person may fall or has fallen based thereon.
A system for determining that a monitored person has fallen, the system comprising:
- a plurality of sensors each for producing a sensed parameter value representative of a current condition of the monitored person;
- an analysis component for analyzing a plurality of sensed parameter values for use in determining whether the monitored person has fallen;
- the analysis component for providing a tentative fall determination responsive to one of the plurality of sensors producing a sensed parameter value indicative of a fall, and the analysis component providing a final fault determination responsive to at least two of the plurality of sensors producing a parameter value indicative of a fall;
- and
- the system further comprising an alert issuing component for issuing an alert responsive to the final fault determination.
A method for determining that a monitored person has fallen, the method comprising:
- receiving prior sensed parameter values taken during a prior time interval and that are indicative of a prior condition of the monitored person;
- receiving current sensed parameter values that are indicative of a current condition of the monitored person;
- determining statistical values based on the prior sensed parameter values;
- analyzing the current sensed parameter values relative to the statistical values;
- and
- determining whether the monitored person has fallen based on an analysis of the current sensed parameter values relative to the statistical values.
Dependencies are inferred from the claim text.