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Electronic sensor system for monitoring activity of objects

  • US 20030093247A1
  • Filed: 10/18/2002
  • Published: 05/15/2003
  • Est. Priority Date: 03/12/1998
  • Status: Active Grant
First Claim
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1. An electronic sensor system for monitoring activity of an object comprising:

  • a central electronic unit means;

    at least one transponder means being interactive with said central electronic unit means;

    wherein said central electronic unit means exchanges encoded activity information through radio frequencies with the transponder means; and

    wherein said transponder means is associated with the object; and

    an alarm means being interactive with said central electronic unit means, wherein said central electronic unit directs said alarm means to emit an alarm upon receipt of selected encoded activity information from the transponder means;

    wherein said transponder means has a stand-by mode and an active phase mode, said transponder means being set in stand-by mode for operation of the system, and said central electronic unit means selectively corresponding with the transponder means and controlling said stand-by mode and said active phase mode of said transponder means.

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