FIELD: measuring equipment.
SUBSTANCE: invention relates to measuring equipment using optical fiber, to fiber-optic security detectors. A signaling method using an end fiber-optic sensor (EFS) of a fiber-optic security detector is proposed, in which a sounding pulse is supplied from a reflectometer of the fiber-optic security detector to a sensitive part of the sensor, wherein the sensor is an end fiber-optic sensor containing a case with a pusher providing change in a position of at least one ring of optical fiber of the sensitive part and the sensitive part made of a splitter, outputs of which are closed between each other by at least one optical fiber twisted in a ring, and together they form a closed loop, wherein the mentioned ring is connected to the mentioned pusher and the mentioned case by means of rods, which, together with the ring, are extended inside a corresponding shrinkable tube, when changing a position of the pusher, the absence of a signal is registered.
EFFECT: simplification of a structure of a sensor, simplification of a process of the manufacture of the sensor, provision of continuous diagnostics of serviceability of its state and an optical line, and implementation by the invention of its purpose.
10 cl, 12 dwg
