SYSTEM FOR TAMPER DETECTION
First Claim
1. Tamper detection system comprising:
- a passive electronic sensor including a circuit having first, second, and third nodes;
a load connected between the first and second nodes of the circuit,a friable electrical connection element connected between the second and third nodes of the circuit; and
a storage unit, connected to the second node of the circuit, for storing an identification code of the sensor;
wherein in use a voltage is applied across the first and third nodes of the circuit, and wherein when the friable electrical connection element is intact, the second node of the circuit is at a first voltage and when the friable electrical connection element is broken, the second node of the circuit is at a second voltage.
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Abstract
The present invention relates to a system for tamper detection. A tamper detection system in accordance with an embodiment of the present invention includes: a passive electronic sensor including a circuit having first, second, and third nodes; a load connected between the first and second nodes of the circuit; a friable electrical connection element connected between the second and third nodes of the circuit; and a storage unit, connected to the second node of the circuit, for storing an identification code of the sensor; wherein in use a voltage is applied across the first and third nodes of the circuit, and when the friable electrical connection element is intact, the second node of the circuit is at a first voltage, and when the friable electrical connection element is broken, the second node of the circuit is at a second voltage.
35 Citations
18 Claims
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1. Tamper detection system comprising:
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a passive electronic sensor including a circuit having first, second, and third nodes; a load connected between the first and second nodes of the circuit, a friable electrical connection element connected between the second and third nodes of the circuit; and a storage unit, connected to the second node of the circuit, for storing an identification code of the sensor; wherein in use a voltage is applied across the first and third nodes of the circuit, and wherein when the friable electrical connection element is intact, the second node of the circuit is at a first voltage and when the friable electrical connection element is broken, the second node of the circuit is at a second voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A tamper detector for a container comprising:
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a passive electronic sensor attached to a first member of the container, the sensor including a circuit having first, second, and third nodes; a load connected between the first and second nodes of the circuit; a friable electrical connection element connected between the second and third nodes of the circuit and attached to a closing member of the container; and a storage unit, connected to the second node of the circuit, for storing an identification code of the sensor; wherein in use a voltage is applied across the first and third nodes of the circuit, and wherein when the friable electrical connection element is intact, the second node of the circuit is at a first voltage and when the friable electrical connection element is broken, indicating a movement of the closing member of the container relative to the first member of the container, the second node of the circuit is at a second voltage. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification