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Tag for use with personnel monitoring system

  • US 4,885,571 A
  • Filed: 08/12/1988
  • Issued: 12/05/1989
  • Est. Priority Date: 04/15/1986
  • Status: Expired due to Term
First Claim
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1. A tag for use with an individual monitoring system comprising:

  • a self-contained power source;

    circuit means coupled to said power source for periodically generating an encoded signal, said encoded signal including identification information and status information;

    sensing means for sensing when said tag is held near human flesh; and

    mode control means for allowing said circuit means to selectively operate in one of a plurality of operating modes;

    said status information including an indication of whether said tag is being held near human flesh; and

    said mode control means including switch means responsive to the application of an external force, and wherein said operating modes include;

    an off mode, wherein no external force has yet been applied, and the circuit means of said tag is disabled, thereby conserving the energy of said self-contained power source,a start-up/test mode, initiated by applying and maintaining said external force, during which said circuit means is enabled and operates in a test mode that allows operation of the tag to be verified, anda normal run mode, initiated upon removal of the external force, during which said circuit means generates said encoded signal at prescribed intervals.

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