对双光源参考通道光纤温度传感器的改进

分析了高压电器内部温度监测方法现状 ,针对目前这一领域内存在的测温精度低 ,长期工作稳定性差等问题 ,提出了一种频分复用光纤传感器的结构形式。并详细分析了传感器系统的工作原理 ,给出了系统的数学模型 ,对系统特性进行了实验研究。实验表明 ,该测温方法完全可以实现对高压电器内部温度的实时在线监测 ,该测温方案是切实可行的。

Improvement of fiber optic temperature sensor with double light source reference channel

The present situation of temperature monitoring methods in the high voltage devices is analyzed.The problems of low accuracy and low st ability in this field are considered.A novel scheme of frequency division multip lexing is proposed.The principle of the fiber optical system is analyzed.The mat hematical model of the whole system is given.In addition,an experiment is given to study the properties of the proposed system.The experimental results show t hat this system can complete monitoring temperature variation of high voltage de vices real time on-line,it also proves that the proposed project is practicable .