Doppler effect radar type anti-intruder system - has multiphase pulse generator driving power stage feeding transmitter

摘要

The intruder detection system includes a multiphase pulse generator (2) which drives a power stage feeding a transmitter. The pulse generator also feeds a double blocking sampler (4). The system has a synchronous detection system (6) designed to increase the efficiency of the radar associated with an arrangement of logic circuits. The logic circuits are designed to obviate parasitic signal triggering of the system when sudden movements are detected by radar.