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Consumer Sleep Technology
Search All Applications in Consumer Sleep Technology
Application US20190008451
Published 2019-01-10
System And Method For Assessing Sleep State
Assessing sleep state of an individual. A time series of accelerometer data is obtained from an accelerometer device mounted upon or to the individual. From the time series of accelerometer data a percentage of time in which the individual is substantially immobile (% TA) is determined. From the time series of accelerometer data a typical time of continuous immobility (MTI) is also determined. The % TA and MTI are combined such as by weighted sum, to produce a sleep score. If the sleep score exceeds a threshold, this is an indication that the individual is asleep.
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- 1. A method of assessing sleep state of an individual, the method comprising:
obtaining a time series of accelerometer data from an accelerometer device mounted upon or to the individual; determining from the time series of accelerometer data a percentage of time in which the individual is substantially immobile (% TA); determining from the time series of accelerometer data a typical time of continuous immobility (MTI); combining the % TA and MTI to produce a sleep score; and if the sleep score exceeds a threshold, outputting an indication that the individual is asleep.
- 12. A system for assessing sleep state of an individual, the system comprising:
an accelerometer device configured to be mounted upon or to the individual and configured to obtain a time series of accelerometer data; and a processor configured to determine from the time series of accelerometer data a percentage of time in which the individual is substantially immobile (% TA), the processor further configured to determine from the time series of accelerometer data a typical time of continuous immobility (MTI); the processor further configured to combine the % TA and MTI to produce a sleep score; and the processor further configured to, if the sleep score exceeds a threshold, output an indication that the individual is asleep.
- 13. A non-transitory computer readable medium for assessing sleep state of an individual, comprising instructions which, when executed by one or more processors, causes performance of the following:
obtaining a time series of accelerometer data from an accelerometer device mounted upon or to the individual; determining from the time series of accelerometer data a percentage of time in which the individual is immobile (% TA); determining from the time series of accelerometer data a median or typical time of continuous immobility (MTI); combining the % TA and MTI to produce a sleep score; and if the sleep score exceeds a threshold, outputting an indication that the individual is asleep.
