| Fiber-optic temperature sensor based on thermo-chromic materials is a kind of effective facility to solve the problem of measuring temperature in the electrical power system. But the range of transmittance with the temperature diversification is small of general optical temperature sensing materials. It is difficult to measure a wide range of temperature diversification, so the research of temperature attenuator is necessary.This paper has studied the thermo-chromic optical fiber temperature sensing probe.First of all, the principle of optical fiber temperature measurement technology and the temperature attenuator of thermo-chromic optical fiber temperature sensing probe is introduced. Sencondly,the thermal conduction relationship function of temperature attenuator which is made of different materials is given by finite element simulation, and the the structure of modules has been designed by the use of the function and the temperature characteristics of different materials.Finally,the modules are observated by thermal imager, and the heat distribution is similar with simulation.The simulation results is effective According to simulation results, the functional between the temperature of heat source and the temperature of attenuator is fitted.So, this paper could be a reference or an example for the application of fiber-optic temperature sensor based on thermo-chromic materials. |
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