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

摘要

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 centre. The fixed unit is equipped with a control unit 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 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 centre; methods (5) of detection of tampering or sabotage are also fitted.