基于光纤传输的温度测试研究

Study the Temperature Testing and Controlling Based on Fiber-optic Transmission

提出了一种基于光纤传输的温度测试技术 ,重点介绍了光纤测温原理、光纤耦合和温敏元件的线性处理技术 ,并分析了表面发射方式的光纤耦合传输特性。在测温误差补偿方面 ,采用的数值拟合方法能够快速完成对测温误差的修正 ,提高在线计算速度与精度。实测表明该技术适合应用在高电压、强磁场、狭窄空间的温度测试。

This paper presents a temperature testing technique based on fiber-optic transmission and the principle of optical fiber, the coupling between the optical fiber and photoelectrical probe, linear solution of temperature sensitive components.The characteristic of fiber-optic transmission with the surface launch is analyzed.In examining the temperature error to compensate, the numerical fitting method adopted can finish the work of temperature correction and increase the online computational speed and precision. The experiment shows that the temperature testing based on this technique has the advantages of suiting temperature measuring of high voltage, strong magnetic field and narrow space