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Band tightness sensor of a wearable device

  • US 10,206,623 B2
  • Filed: 09/28/2015
  • Issued: 02/19/2019
  • Est. Priority Date: 09/28/2015
  • Status: Active Grant
First Claim
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1. A wearable device, comprising:

  • a housing including a processing unit and a health sensor;

    a band operable to couple the housing to a body part of a user; and

    a tightness sensor, coupled to the band and communicably coupled to the processing unit, that produces a signal indicating a tightness of the band;

    wherein the processing unit is configured to;

    determine the tightness of the band using the signal; and

    if the tightness of the band is outside a range of tightness values, provide output directing the user to adjust the band to improve operation of the health sensor;

    wherein;

    the tightness sensor comprises first and second capacitive plates operable to change proximity with respect to each other in response to a change in the tightness of the band; and

    the signal indicates a capacitance between the first and second capacitive plates.

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