Surveillance and remote alarm system for persons subject to limitation of freedom of movement

• US 20020190864A1
• Filed: 06/17/2002
• Published: 12/19/2002
• Est. Priority Date: 12/17/1999
• Status: Active Grant

• Current Assignee: Italdata Ingegneria Dll'Idea S. P. A.
• Original Assignee: Italdata Ingegneria Dll'Idea S. P. A.
• Inventors: Boccacci, Robenc
• Granted Patent: US 6,975,234 B2
• Time in Patent Office: Days
• US Class Current: 340/573.4
• CPC Class Codes: G01V 15/00 Tags attached to, or associated with, an object, in order to enable detection of the object record carriers for use with machines having a detectable tag or marker G06K19/00
• CPC Class Codes: G07C 9/28 the pass enabling tracking or indicating presence
• CPC Class Codes: G07C 9/37 using biometric data, e.g. fingerprints, iris scans or voice recognition
• CPC Class Codes: H04M 11/04 with alarm systems, e.g. fire, police or burglar alarm systems

Abstract

The surveillance and remote alarm system for persons subject to limitation of freedom of movement comprises a fixed unit placed in the area within which the person can move and a personal bracelet element attached to the person subject to limitation of freedom of movement. The fixed unit is arranged to establish an electromagnetic connection with the personal element and a connection via a telephone line to an operations center. The fixed unit is equipped with a CPU (7) associated with a fingerprint reader (10) and a radio receiver (9) arranged to interact with a similar radio transmitter (4) fitted in the personal element together with a CPU (3) that controls its operation. Means are provided, under the control of the CPUs, to detect any interruption and/or anomalies in the connection between the fixed unit and the personal element and to send an alarm to the operations center; methods (5) of detection of tampering or sabotage are also fitted.

Claims

1. Surveillance and remote alarm system for persons subject to limitation of freedom of movement, characterized in that it comprises a fixed unit placed in the area within which the person can move and a personal bracelet element attached to the person subject to limitation of freedom of movement, in which the said fixed unit is arranged to establish an electromagnetic connection with the personal element and to connect via a telephone line to an operations centre;

the fixed unit being equipped with a CPU associated with a digital fingerprint reader and a radio receiver arranged to interact with a similar radio transmitter contained in the personal element and a CPU that controls its operation;

means being provided under the control of the CPUs to detect any interruption and/or anomalies in the connection between the fixed unit and the personal element and to send alarms to the operations centre.

2. System according to claim 1, characterized by including means of detecting tampering or sabotage and consequently sending an alarm to the operations centre.

3. System according to claim 1 or 2, characterized by including means for establishing the quality of the electromagnetic connection and sending an alarm in the event of a significant degradation in quality.

4. System according to one or more of claims 1 to 3, characterized in that the electromagnetic connection is encrypted and/or encoded.

5. System according to one or more of the preceding claims, characterized in that the electromagnetic connection is established at predetermined intervals.

6. System according to one or more of the preceding claims, characterized in that the bracelet includes an anti-tamper (cutting) system including optical fibres embedded in the actual material of the strap itself.

7. System according to one or more of the preceding claims, characterized in that the casing for a fixed transceiver includes anti-tamper devices.

8. System according to one or more of the preceding claims, characterized in that the frequency of the radio connection is centred on 433.92 MHz.

9. System according to one or more of the preceding claims, characterized in that optical channels are used which are tested at random intervals to check for consistency between signals sent (position and value) and those received.

10. System according to one or more of the preceding claims, characterized in that it is used as a reset system for the pre-alarm on recognising the fingerprint of the holder.