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PERSONNEL LOCATION AND MONITORING SYSTEM AND METHOD FOR ENCLOSED FACILITIES

  • US 20100117823A1
  • Filed: 11/12/2008
  • Published: 05/13/2010
  • Est. Priority Date: 11/12/2008
  • Status: Active Grant
First Claim
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1. A system for locating personnel in an enclosed facility having a plurality of spaced-apart stations, said system comprising(a) a separate indicator badge for each of said personnel;

  • (b) at least one detector for detecting when one of said badges is located within a predetermined distance from one of said stations, and for reading information from the detected badge at said station;

    (c) each of said detectors including first and second wireless transmitters for transmitting first and second wireless signals, the signals having transmission velocities different from one another; and

    (d) a device for detecting the difference in transmission times between said first and second signals and indicating when said difference is below a predetermined value

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