FIELD: intruder alarms, possible use for guarding regions and approaches to objects.
SUBSTANCE: radio-technical device for intruder alarm contains a transmitter in form of serially connected amplitude modulator, high frequency generator and transmitting antenna and a receiver. Receiver contains serially connected receiving antenna, high frequency block, radio frequency detector, video impulse amplifier, video impulse detector, constant current amplifier and automatic amplification control block, output of which is connected to control input of high frequency block. Introduced to receiver are analog-digital converter, register 1, register 2, register 3, register 4, digital comparator 1, digital comparator 2, OR logical element, NOT logical element, counter, threshold constant storage device, digital comparator 3.
EFFECT: expanded functional capabilities and range of application for solution of interference resistance problem, achieved due to higher level of signal processing efficiency.
1 dwg
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