作者：杨和平1，朱杨凯2，周正超2，谢志迅2，谢志行3

单位：1. 南京大学，江苏南京 210023；

      2. 南京力通达电气技术有限公司，江苏南京 210000；

      3. 南京大学金陵学院，江苏南京 210089

中图分类号：TP212.1          

文献标识码：A        

文章编号：1006-883X(2019)05-0007-07

收稿日期：2019-04-17

 

摘要：基于对荧光在不同温度下寿命衰减曲线不同而提出的光纤测温思路，研究了荧光衰减参数的测量方法以及荧光探头的镀膜方式，进一步深入到对衰减参数p的算法研究，并通过数据检测和软件模拟分析后拟合出荧光衰减系数与温度之间的线性关系。通过实验测试，证明660nm稀土材料荧光粉对温度因变率较好，并成功制作光纤测温传感器探头进行数据测量，通过文中提出的拟合算法原理进行温度匹配，可以将准确率保持在0.1%，达到荧光衰减测温的精度要求，实现实验室中的温度测量。

关键词：光纤探头制作；最小二乘拟合法；衰减系数

 

Fluorescence Attenuation Optical Fiber Temperature Measurement

YANG He-ping1, ZHU Yang-kai2, ZHOU Zheng-chao2, XIE Zhi-xun2, XIE Zhi-xing3

1. Nanjing University, Nanjing 210023, China; 2. Nanjing LiTongDa Electrical Technology Co., LTD., Nanjing 210000, China; 3. Nanjing University Jinling College, Nanjing 210089, China

Abstract: Based on the optical fiber temperature measuring principle that fluorescence has different life decay curves at different temperatures, the measuring method of the fluorescence decay parameters and the coating method of fluorescence probe are studied in this paper, and then the algorithm for decay parameter p is further studied. The linear relationship between fluorescence decay coefficient and temperature is fitted by data detection and software simulation analysis. The results show that the fluorescence powder of 660nm rare earth material is better in temperature variability. The fibre-optical temperature sensing probe is made successfully for data measurement. Temperature matching based on the fitting algorithm proposed in this paper can keep the accuracy within 0.1%, which meets the precision requirement of fluorescence-decay temperature measurement and realizes the temperature measurement in the laboratory.

Key words: fabrication of fiber-optical probe; least squares fitting; decay coefficient

 

 

备注：2019年 第25卷 第05期