双波长光纤温度传感器的研究  

Study on Optical Fiber Temperature Sensor Using Two Wavelength Light Sources

作　　者：刘晔[1] 张赟[1] 王采堂[1] 唐胜安[1] 韦兆碧[1] 王锋[1] 

机构地区：[1]西安交通大学电气工程学院,西安710049

出　　处：《西安交通大学学报》2002年第4期335-338,共4页Journal of Xi'an Jiaotong University

基　　金：西安交通大学自然科学(在职博士)基金资助项目.

摘　　要：提出了一种满足电力系统高压电器设备在线温度检测需要的双波长光纤温度测量系统．系统以半导体材料的光谱吸收特性作为测温原理，采用光纤和无源器件感受和传递温度信号，具有良好的绝缘性和抗电磁干扰的能力．论述了运用改进双波长补偿方法来全面克服系统中存在的光路扰动、解决光纤温度传感器工作不稳定问题、提高系统的测量精度和稳定性的原理．给出了双波长光纤温度测量系统的实验结果，证明了理论研究的正确性．An optical temperature sensor is presented, which adopts two-wavelength light sources and is for the on-line detection of the temperature in high voltage facilities. This system is based on the spectrum absorption characteristics of semiconductor. Optical fiber and optical passive device are employed to detect and transfer temperature signal. The sensor is immune to electro-magnetic interference, and possesses high insulation level. Improved two-wavelength compensating method was used. The measuring system can eliminate the disturbance effect in the optical path of sensor, thus the problem of instability is solved and measurement precision is greatly enhanced. The experimental results identified the correctness of theoretical investigation.

关 键 词：双波长光纤温度传感器 半导体吸收 改进双波长补偿法 光路扰动 

分 类 号：TP212.11[自动化与计算机技术—检测技术与自动化装置]