| 摘要 |
<p>The system has a magnetic field detector for detecting a magnetic field (D) generated by a metal detector (DM), and an alarm center (CA) to relay an alarm signal from the magnetic field detector to alarm management equipment (EQ), where the magnetic field detector is one of remote magnetic field detector (DL) and close magnetic field detector (DP). A microcontroller detects interference of communication between the alarm center and the detector, where communication between the alarm center and the alarm management equipment and between the detector and the alarm center are encrypted. An independent claim is also included for a method for triggering an alarm following detection of use of a metal detector.</p> |
