Fall detection system
First Claim
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1. A fall detection system, comprising:
- one or more sensors for monitoring movement of a user and for generating corresponding signals;
a processor configured for;
determining a threshold from one or more measurements of a physical condition of the user by at least;
estimating the time it would take the user to stand up after a fall based on the signals; and
setting the threshold based on the estimated time;
analyzing the signals to identify a fall by the user;
analyzing the signals to identify a period of inactivity of the user following the fall; and
comparing length of inactivity of the user with the threshold to determine severity of the fall.
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Abstract
There is provided a fall detection system, comprising one or more sensors for monitoring the movement of a user of the fall detection system and for generating corresponding signals; means for determining a threshold from one or more measurements of the physical condition of the user; a processor for analyzing the signals to identify a fall by the user; analyzing the signals to identify a period of inactivity of the user following the fall; and comparing the length of the period of inactivity of the user with the threshold to determine the severity of the fall.
35 Citations
20 Claims
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1. A fall detection system, comprising:
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one or more sensors for monitoring movement of a user and for generating corresponding signals; a processor configured for; determining a threshold from one or more measurements of a physical condition of the user by at least; estimating the time it would take the user to stand up after a fall based on the signals; and setting the threshold based on the estimated time; analyzing the signals to identify a fall by the user; analyzing the signals to identify a period of inactivity of the user following the fall; and comparing length of inactivity of the user with the threshold to determine severity of the fall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, 20)
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16. A method of operating a fall detection system, the method comprising:
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determining a temporal threshold from one or more measurements of user physical condition, the determining including; monitoring sensor measurements for specific user activities; estimating the time it would take the user to stand up after a fall based on the monitored sensor measurements; and setting the threshold based on the estimated time; detecting a fall by the user; and monitoring length of inactivity of the user following the detected fall relative to the threshold to determine severity of the detected fall.
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17. A computer program product for use in a fall detection system, the computer program product comprising a non-transitory computer readable medium carrying computer program code that, when executed on a processor or computer, controls the processor or computer to:
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determine a temporal threshold from one or more measurements of user physical condition, the threshold indicating a length of inactivity of the user following a fall and determined by; monitoring sensor measurements for specific user activities; estimating the time it would take the user to stand up after a fall based an the monitored sensor measurements; and setting the threshold based on the estimated time; detect a fall by the user; monitor length of inactivity of the user following the detected fall relative to the first threshold to determine severity of the detected fall; and grade the severity of the detected fall in response to the length of inactivity of the user being less than the threshold, wherein the grade is based on a ratio of the length of inactivity and the threshold.
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Specification