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Two-way wireless monitoring system and method

  • US 20060290519A1
  • Filed: 06/22/2006
  • Published: 12/28/2006
  • Est. Priority Date: 06/22/2005
  • Status: Abandoned Application
First Claim
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1. A two-way wireless monitoring system for tracking the location of a badged user or a badged object within a facility, the monitoring system comprising:

  • a plurality of beacons bearing unique beacon IDs thereof, distributed throughout the facility for periodically broadcasting over a wireless medium respective beacon messages carrying the respective beacon IDs;

    a portable badge having a unique badge address, for picking up from the wireless medium the beacon messages of nearby beacons;

    a base-station comprising an RF transceiver for establishing an RF link with the badge when being within an RF coverage range of the base-station; and

    a central unit accessible by the base-station via a data network, wherein, in operation, the badge composes a badge message containing the beacon IDs of the nearby beacons;

    wherein the base-station frequently polls, via the established RF link, the badge to receive the badge message therefrom;

    wherein the base-station uploads a base-station message, containing the badge address and the badge message, to the central unit via the data network; and

    wherein the central unit estimates the badge location using the base-station message and decides on triggering an event within the facility based on the badge address and the estimated badge location.

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