SIGNALING CAMOUFLAGING SYSTEM FOR PROTECTION OF UNDERGROUND MAIN PIPELINES BASED ON MAGNETOMETRIC DETECTION MEANS AND A METHOD OF DETECTING UNAUTHORIZED ACCESS THERETO Russian patent published in 2019 - IPC G08B13/24 

FIELD: security systems.

SUBSTANCE: invention relates to signaling means for protection, which operate at change of magnetic field intensity, and is intended for detection and recording of unauthorized access by means of sub-tunnel to underground main product pipelines. To realize technical result in disclosed system there is inductive sensitive element arranged under ground surface above pipeline. Fact of violation attempt is determined by availability of repeated signals from the induction sensitive element for a limited period of time or a signal characteristic for destruction or displacement of a cable segment of a sensitive element in magnetic field of the Earth.

EFFECT: technical result is simplification of system design, increase of its reliability, absence of false actuations of system related to free movement of people and animals in zone of pipeline location, reduction of earth works scope, reduction of material consumption and area occupied by signaling equipment.

2 cl, 6 dwg