초록 ▼

A wireless tamper detection sensor is defined by a perforated electrical conductor. The conductor is shaped to form a geometric pattern between first and second ends thereof such that the conductor defines an open-circuit that can store and transfer electrical and magnetic energy. The conductor reso

A wireless tamper detection sensor is defined by a perforated electrical conductor. The conductor is shaped to form a geometric pattern between first and second ends thereof such that the conductor defines an open-circuit that can store and transfer electrical and magnetic energy. The conductor resonates in the presence of a time-varying magnetic field to generate a harmonic response. The harmonic response changes when the conductor experiences a change in its geometric pattern due to severing of the conductor along at least a portion of the perforations. A magnetic field response recorder is used to wirelessly transmit the time-varying magnetic field and wirelessly detecting the conductor's harmonic response.

대표청구항 ▼

What is claimed is: 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 unconn

What is claimed is: 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.