Tamper detection for body worn transmitter
First Claim
1. A tamper detection system for a body worn transmitter attached to a subject'"'"'s body comprising:
- a portable monitoring receiver in proximity to the body worn transmitter continuously receiving signals from the body worn transmitter and a global positioning satellite;
the body worn transmitter having an antenna imbedded in a strap for communicating with the portable monitoring receiver, the antenna inductively coupled to the body of the subject and means for electrically coupling the antenna to the transmitter;
the body worn transmitter having programmed therein a coded identification signal, a data encryption for the coded identification signal, a real time clock and means to detect tampering with the body worn transmitter; and
the body worn transmitter additionally containing an electrolyte immersion sensor sending a tamper inhibit signal via the antenna to the portable monitoring receiver and then to a base station.
5 Assignments
0 Petitions
Accused Products
Abstract
A body worn transmitter and its associated portable monitoring receiver receiving global position signals, is provided with tamper detection to support twenty-four hour violation reporting from a subject under community supervision moves about the community. The body worn transmitter incorporates active radio frequency sensors to determine if the body worn transmitter has either been removed from the subject'"'"'s body or the attachment strap has experienced tampering for the purpose of removal from the subject'"'"'s body. A signal from the body worn transmitter is encrypted in order to prevent recording and retransmission of the body worn transmitter signal to an associated portable monitoring receiver for the purposes of masking body worn transmitter tampering or to make the body worn transmitter falsely appear in a different location. The body worn transmitter can be immersed in electrolyte solutions without generating a false tamper signal.
135 Citations
17 Claims
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1. A tamper detection system for a body worn transmitter attached to a subject'"'"'s body comprising:
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a portable monitoring receiver in proximity to the body worn transmitter continuously receiving signals from the body worn transmitter and a global positioning satellite; the body worn transmitter having an antenna imbedded in a strap for communicating with the portable monitoring receiver, the antenna inductively coupled to the body of the subject and means for electrically coupling the antenna to the transmitter; the body worn transmitter having programmed therein a coded identification signal, a data encryption for the coded identification signal, a real time clock and means to detect tampering with the body worn transmitter; and the body worn transmitter additionally containing an electrolyte immersion sensor sending a tamper inhibit signal via the antenna to the portable monitoring receiver and then to a base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A tamper detection device in a body worn transmitter attached to a subject'"'"'s body and adapted to continuously send electrical signals to a nearby portable monitoring receiver, the body worn transmitter comprising:
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an antenna imbedded in a strap for communicating with the portable monitoring receiver, the antenna inductively coupled to the body of the subject and a means for electrically coupling the antenna to the transmitter; the body worn transmitter having programmed therein a coded identification signal, a data encryption for the coded identification signal, a real time clock and means to detect tampering with the body worn transmitter; and the body worn transmitter additionally containing an electrolyte immersion sensor which sends a tamper inhibit signal to a tamper detection circuit in the body worn transmitter. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A tamper detection system for a body worn transmitter strapped to a subject'"'"'s body appendage comprising:
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a portable monitoring receiver in proximity to the body worn transmitter continuously receiving signals from the body worn transmitter and a global positioning satellite; and the body worn transmitter having an antenna imbedded in a strap for communicating with the portable monitoring receiver, the antenna inductively coupled to the body of the subject and a strap clamp electrically coupling the antenna to the transmitter; the body worn transmitter having programmed therein a coded identification signal, a data encryption for the coded identification signal, a real time clock emitting a real-time clock data signal and an antenna reflected power sensor and level detector, an antenna voltage standing wave ratio sensor and charge detector and a transmitter cover pressure sensitive switch to detect tampering with the body worn transmitter. - View Dependent Claims (16, 17)
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Specification