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Personal emergency response appliance

  • US 8,525,673 B2
  • Filed: 04/29/2010
  • Issued: 09/03/2013
  • Est. Priority Date: 06/30/2006
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • one or more wireless nodes forming a wireless network;

    a user activity sensor including an accelerometer and a wireless transceiver adapted to communicate with the one or more wireless nodes using the wireless network; and

    a processor analyzing accelerometer data and coupled to the wireless transceiver to request assistance from a third party based on the user activity sensor by distinguishing between falls and other types of normal body movement, the processor initiating a telephone call seeking assistance for the user if the user pushes a help button or if the processor detects a dangerous condition, and wherein sequences of human motions are classified into groups of similar postures represented by model-states with a posture model depicting inter-relationships among model-states.

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