METHOD TO DETECT INTRUDER AT CONTROLLED BORDER Russian patent published in 2020 - IPC G08B13/24 

FIELD: signalling.

SUBSTANCE: invention relates to the field of security alarm, in particular to radio detection methods of intruders intruding into the controlled area of space, called the protection boundary and located on the boundary of the protected territory. To detect an intruder at the ends of a security boundary, a transmitter and a receiver are placed, and a guide wire line is placed between them along the boundary at a certain height from the ground. To increase the creeping intruder detection reliability along the security boundary, additional transmitters are placed, all transmitters are connected in series to each other and to the receiver control output by a cable communication line, through which successive switching of transmitters into radiation mode of probing signals.

EFFECT: technical result is higher detection reliability of creeping intruder.

8 cl, 8 dwg