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Distributed fixture beacon management

  • US 10,182,487 B2
  • Filed: 01/12/2017
  • Issued: 01/15/2019
  • Est. Priority Date: 11/30/2012
  • Status: Active Grant
First Claim
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1. A fixture comprising:

  • a sensor unit, wherein the sensor unit is located at a fixed location, andwherein the sensor unit comprises;

    a plurality sensors, the plurality of sensors operative to generate a sense signals based on sensed motion and sensed light;

    wireless communication circuitry, the wireless communication circuitry operative to maintain a wireless link with a network;

    a controller, the controller operative to;

    manage communication with the network, wherein the communication includes at least information of the sensed signals;

    manage reception of beacons through the wireless communication circuitry, wherein the beacons are received from at least a mobile object, and at least some of the beacons include information associated with the mobile object, wherein the information associated with the mobile object includes at least a unique ID of the mobile object and a transmission power of the beacons, wherein managing the reception of the beacons further includes filtering the received beacons based on the unique ID;

    determine a received signal strength indicator (RSSI) of the received beacons; and

    estimate a distance between the fixture and the mobile object based on the RSSI of the received beacons and the transmission power of the beacons.

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