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GESTURE CONTROL FOR MONITORING VITAL BODY SIGNS

  • US 20130261771A1
  • Filed: 12/14/2011
  • Published: 10/03/2013
  • Est. Priority Date: 12/17/2010
  • Status: Active Grant
First Claim
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1. An apparatus for controlling a sensor device which uses a movement sensor (10), said apparatus comprising:

  • a gesture detector (40) for evaluating an acceleration output of said movement sensor (10) to detect at least one predetermined gesture; and

    a device controller (50) for controlling a functional operation of said sensor device in response to a detection output of said gesture detector (40), wherein said gesture detector (40) is adapted to perform at least one ofobserving each of three acceleration components of a three-dimensional acceleration output of said movement sensor (10), comparing said acceleration components with predetermined positive and negative thresholds, and determining a shake detection event if for at least one of said acceleration components the acceleration crosses said positive threshold and said negative threshold a minimum number of times in alternating order and within a maximum duration,obtaining at least one one-dimensional signal component from said acceleration output, estimating a background level and detecting a candidate tap if said one-dimensional signal component surpasses a first threshold and said background level is below a second threshold, andanalyzing acceleration samples of said acceleration output on a frame by frame basis, determining a reference vector within a frame, and detecting a turn gesture if an angle between said reference vector and a series of acceleration samples is within a range from a first threshold for at least a first predetermined number of samples and thereafter below a second threshold for at least a second predetermined number of samples and thereafter within a third threshold for a third predetermined number of samples, which happens before a total duration of a fourth predetermined number of samples.

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