Temperature monitoring device, temperature monitoring method and temperature monitoring system

摘要

The temperature monitoring apparatus includes a control system 100 configured to generate a substantially periodic control waveform applied to a control input of a light source 111 having a tunable wavelength coupled to a fiber optic interferometer 112 , wherein the measurement optical fiber 120 ) is connected to one arm, the output of the interferometer 111 is connected to a detector 113, the output of the detector is connected to a signal processing module 101 configured to identify temperature changes as a function of fiber length according to the present invention The interference length of the light source 111 is longer than 0.5 m, the period of the periodic waveform is 20 seconds or less, the difference between the minimum and maximum wavelengths is greater than 3 pm, and the optical fiber is located near the external energy device of the vehicle during operation. configured to be placed. The temperature monitoring method according to the invention is characterized in that it determines the temperature by taking into account the cumulative change detected using the device according to the invention at the measuring point on the measuring optical fiber of the device. The temperature monitoring system according to the invention is characterized in that the measuring optical fiber of the device according to the invention is arranged in the vicinity of the external energy device of the vehicle.