The optical fiber transducer based on Bragg gratings are stable at high temperature for monitoring heat radiators in bearings and power generators

摘要

Invention patent: "transducer based on the optical fiber Bragg gratings are stable at high temperature for monitoring heat radiators in bearings and power generators. The present report of invention patent refers to a new transducer employed for temperature monitoring in bearings and radiators of electrical generators.The transducer uses a ceramic rod to protect two optical fibers with Bragg gratings are stable at high temperature and multiplexadas. The rod has the function to encapsulate and conduct heat to the networks of the measurand.In order to conduct heat on an ad hoc basis to the Bragg gratings, were positioned rings with good thermal conduction on the rod of ceramics in places where networks are. On the other hand, where there is no FBG, has thermal insulating material, thus reducing the heat conduction in the longitudinal direction of the rod of oxide ceramic.The Bragg gratings have good precision, repeatability, can also operate at temperatures above 1000 u00b0 C in metrological conditions full and over the years, which makes the transducer of the invention become reliable, another big advantage is that several sensors can be stored in the same fi Bra optics.This increases the ratio of sensors installed in a waveguide, when compared to conventional electrical sensors. The advantage of the conventional Bragg gratings can still cite the low response time, making the analysis of the temperature measurements with the invention, more detailed.The system consists of a computer (30) equipped with software for the acquisition of the measures in real time communication protocol preferably TCP / IP (33) between the computer system and a mark (31) is used to interpret the measurements of optical sensors and the two fibres u00f3tic (2) with 'n' Bragg gratings are stable at high temperature (1).