Algorithm for optical fiber temperature measurement of hydraulic generator rotor

The invention relates to the technical field of optical fiber temperature measurement, in particular to an algorithm for optical fiber temperature measurement of a hydro-generator rotor, and the algorithm comprises the following operation steps: S1, obtaining a reflection spectrum of an optical fiber temperature sensor; s2, acquiring the spectrum of the reference device for correction; s3, carrying out integration on the characteristic interval of the corrected spectrum to obtain a characteristic wavelength; s4, searching a calibration table of the temperature and the characteristic wavelength; the step S1 of acquiring the reflection spectrum of the optical fiber temperature sensor specifically comprises the following substeps: the gallium arsenide optical fiber temperature sensing system is reduced along with the rise of the temperature based on the forbidden band width of gallium arsenide, and the edge wavelength of the absorption spectrum moves towards the long wavelength direction; according to the algori