Hydro-generator rotor lead temperature optical fiber sensing monitoring method

The invention discloses a hydro-generator rotor lead temperature optical fiber sensing and monitoring method. A fiber bragg grating sensor used for temperature monitoring, a signal converter, a transmission optical fiber, a fiber bragg grating demodulator, an industrial touch all-in-one machine, a penetrator and other accessories are included. According to the water turbine generator set rotor lead temperature measurement method based on optical fiber sensing, optical transmission is adopted, a system can resist electromagnetic interference and is safe, the fiber grating sensor is resistant tohigh voltage, chemical corrosion, high temperature and aging, small in size, high in sensitivity, high in response speed, low in energy consumption, high in precision and the like, and the method iscompletely suitable for strong electric field and strong magnetic field environments. The change of the external temperature is measured according to the optical characteristics of the fiber bragg grating, the real temperature