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Wireless tamper detection sensor and sensing system

  • US 8,042,739 B2
  • Filed: 09/28/2007
  • Issued: 10/25/2011
  • Est. Priority Date: 09/28/2007
  • Status: Active Grant
First Claim
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1. A wireless tamper detection sensor, comprising:

  • at least one electrical conductor having first and second unconnected ends and shaped to form a geometric pattern between said first and second unconnected ends;

    each said conductor in said geometric pattern maintained as an unconnected open-circuit that can store and transfer electrical and magnetic energy;

    each said conductor further having perforations formed therethrough wherein electrical conductivity is maintained between said first and second unconnected ends thereof;

    each said conductor resonating in the presence of a time-varying magnetic field to generate a harmonic response, wherein said harmonic response changes when said conductor experiences a change in said geometric pattern due to severing of said conductor along at least a portion of said perforations.

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