FIBER-OPTIC PRESSURE SENSOR Russian patent published in 2018 - IPC G01L11/02 

FIELD: measuring equipment.

SUBSTANCE: use to create a fiber-optic pressure measuring devices. Summary of the invention consists in that a fiber-optic pressure sensor comprises a frame, a fiber-optic light guide arranged collinearly to the axis of the frame, and a radiation receiver, frame is a LED consisting of interconnected p-conductivity layer, an n-conductivity layer, and a light-emitting p-n transition layer interposed therebetween, piezoelectric layers with polarization direction are applied to an outer side of the p-conductivity layer and / or an outer side of the n-conductivity layer of the frame providing the occurrence of electric tension in the frame under pressure, on the outer sides of piezoelectric layers, or a piezoelectric layer and the p-conductivity layer, or a piezoelectric layer and the n-conductivity layer, continuous control electrodes are applied along a sensor axis, wherein the fiber-optic light guide is located inside or near the light-emitting p-n transition layer with the possibility of transmitting light flux emitting from said layer to a receiver.

EFFECT: providing the possibility of increasing the working surface of the fiber, determining the distribution function of the inhomogeneous pressure along the entire length of the fiber, and locating the zones of increased pressure.

1 cl, 7 dwg