Anti-jamming radio anti-jamming device for intrusion monitoring systems.

摘要

P The device according to the invention comprises an interference emission detector (5) on the frequency used by intrusion detectors (8) to communicate with a central organ (7), an infrared detector (1 ), separate from the surveillance system, making it possible to detect any intrusion into the area in which the radio transmissions are carried out between the detectors (8) and the central organ (7), an alarm circuit (6) responsible for validating the alarm signal emitted by the interference emission detector (5) to the central body (7), following a detection of an interference signal, if an intrusion is detected by the infrasound (1). It prevents radio communications between the detectors (8) and the central unit (7) from being interfered with. /P