COMBINED TWO-BORDER SYSTEM FOR PROTECTION OF OBJECTS PERIMETERS Russian patent published in 2019 - IPC G08B13/00 

FIELD: intrusion alarm systems.

SUBSTANCE: invention relates to the field of security alarm, in particular to means of objects perimeters guarding, intended for detection, by means of technical facilities, intruders penetrating into the protected territory, and triggering the detection equipment. System consists of two signal analysis channels. System includes first and second sensitive elements, first and second signal converters, first and second signal analysis units, a processor, a comparator unit, a receiving-transmit module with a wire line and a radio modem with a radio link. Signal analysis units are configured to determine digital signs of degrees of threat in each channel. Processor is configured to combine digital signs of threat degrees based on logic circuits "AND" and "OR" with generation of a generalized digital signal characterizing a general threat degrees. Final logical alarm signal of the system is generated based on the result of comparing the generalized digital signal with a given digital threshold.

EFFECT: high reliability of protection.

1 cl, 4 dwg