QUASI-DISTRIBUTED FIBER-OPTICAL INFORMATION-MEASURING SYSTEM Russian patent published in 2017 - IPC G01B11/16 

FIELD: measuring equipment.

SUBSTANCE: quasi-distributed electrooptical information-measuring system contains a wideband radiation source arranged in a technological order and connected to each other by fiber-optical cables, an optical switch, an optical splitter, a photodetector device (PDD) with a signal registration and conversion unit, a monitor object, a system of thermal stabilization of the supporting Bragg gratings. The system also contains at least one measuring channel with sensors on Bragg gratings placed on the monitor object and supporting Bragg gratings with a known characteristic of the wavelength of reflected radiation connected by one side of the fiber-optical cable to sensors on Bragg gratings and supporting Bragg gratings with an optical splitter. At the same time, the system is provided with at least one additional optical splitter connected by a fiber-optical cable with an optical switch, a photodetector device (PDD) with a signal registration and conversion unit and connected by the other side of the fiber-optical cable with sensors on Bragg gratings and supporting Bragg gratings with an additional optical splitter. Sensors and supporting Bragg gratings are connected in series.

EFFECT: increase of the longevity of the measuring path of the systems of built-in nondestructive testing of technical devices of responsible application.

4 cl, 1 dwg