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Method and device for providing an alarm

  • US 9,984,548 B2
  • Filed: 12/18/2015
  • Issued: 05/29/2018
  • Est. Priority Date: 12/22/2014
  • Status: Active Grant
First Claim
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1. A wearable personal emergency response device for providing an alarm, the device comprising:

  • a housing;

    a strap coupled to the housing for wearing in use the device attached to a wrist of a user, a belt coupled to the housing for wearing in use the device attached to a waist of a user, or a cord coupled to the housing for wearing the device around a neck of a user;

    whereinthe device further comprises a component having an electrical characteristic, the housing is further coupled to the component, the electrical characteristic being changeable in response to a pulling force acting on the housing; and

    wherein the device is arranged to provide the alarm in response to a measured change in the electrical characteristic of the component, wherein the outside of the housing comprises two or more conductive elements;

    the device being arranged to measure an impedance between the conductive elements; and

    wherein the alarm is activated further in response to a detected change of the impedance between the elements.

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