DIFFERENTIAL SENSOR FOR DETECTING MOVING OBJECTS

摘要

The device makes it possible to increase detection range and enhance operating capability. The above-mentioned technical result is achieved in that the sensor comprises two antennas, a pulse generator, a differential amplifier, a feedback device, a low frequency filter and a comparator. The input circuit consists of two detectors. The output of the differential amplifier is connected to the input of the low frequency filter and to the input of the feedback device, the output of which is connected to the output of one of the detectors. The output of the low frequency filter is coupled to the input of the comparator. The pulse generator is designed to ensure the generation of radio pulses. An additional low frequency filter is introduced. The feedback device is provided with two outputs, the first of which is coupled to the output of one of the detectors, and the second output of which is coupled, via the additional low frequency filter, to the input of that detector which has the first output of the feedback device coupled to the output.