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Automatic GPS tracking system with passive or active battery circuitry

  • US 20120235860A1
  • Filed: 11/21/2011
  • Published: 09/20/2012
  • Est. Priority Date: 04/25/2006
  • Status: Abandoned Application
First Claim
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1. A portable battery operated asset or personnel GPS tracking system which comprises:

  • a home base station unit configured to periodically transmit a confirmation signal, said confirmation signal having a limited range; and

    a GPS tracking unit having a tamper detection circuitry which securely is attached to an asset or a personnel;

    an RF receiver configured to receive the confirmation signal from said home base station unit, said RF receiver powered by a first battery;

    a GPS receiver configured to determine a location of said GPS tracking unit;

    a cellular or satellite transceiver configured to transmit said GPS tracking unit location to a monitoring station;

    a second battery in electrical communication with said GPS receiver and said cellular or satellite transceiver, said second battery not in electrical communication with said RF receiver;

    a processor coupled to an alerting device, said processor configured to activate said alerting device a first time to indicate said GPS tracking unit is beyond said limited range of said home base station unit when said confirmation signal is not received from said home base station unit; and

    power switching circuitry configured at a predetermined time to transfer power from said second battery to said GPS receiver and cellular or satellite transceiver if said confirmation signal is not received after said alerting device is activated said first time.

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