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Monitoring wellness using a wireless handheld device

  • US 8,527,213 B2
  • Filed: 06/30/2010
  • Issued: 09/03/2013
  • Est. Priority Date: 07/21/2009
  • Status: Active Grant
First Claim
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1. A method for detecting a subject'"'"'s stress level associated with an activity, comprising:

  • connecting the subject to a sensor that senses a value of a biometric;

    during the activity,repeatedly sensing the value of the biometric over each of a plurality of time windows;

    computing, for each time window, a difference between each sensed biometric value in the time window and an ambient value to determine a maximum difference for the time window and a minimum difference for the time window;

    computing, for each time window, a deviation, for the sensed biometric values in the time window by subtracting the time window'"'"'s minimum difference from the time window'"'"'s maximum difference; and

    detecting the stress level based on the computed deviations for the time windows, wherein detecting the stress level further comprises inferring a stress state transition from time window to time window based on a temporal Bayesian Network (TBN) model and corresponding computed deviations.

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