FIELD: measuring equipment.
SUBSTANCE: invention relates to measuring equipment using optical fibre, namely, to fibre-optic security detectors, as well as products, methods and tools related to fibre-optic security detectors and aspects thereof, in particular, to fences with a linear part for a fibre-optic security detector (variants).
EFFECT: increase in the sensitivity of the security fibre-optic detector, in particular, due to the cable of the sensing element being laid on the elements of the fence in a smoothly bending shape fastening the strings of the wire fence, strengthening the fence itself and eliminating the possibility of an unnoticeable intrusion through the fence by pushing apart the wires and forming a gap in the fence; increase in the overall operational reliability of the fibre-optic security detector, in particular, due to the exclusion of poorly protected compensation coils needed to compensate for the length of the fibres of the sensing element.
6 cl, 12 dwg
