一种提高分布式光纤温度传感器参考温度准确度的方法

A method to improve the accuracy of reference temperatures of distributed optical fiber temperature sensors

当参考温度的测量误差改变时,分布式光纤温度传感器测温精度也随之改变.通过对现有参考温度测量方法的分析比较,提出了一种采用两个温度传感器测量参考温度的测量装置和方法,取两个温度传感器测得值的平均值作为参考温度.将设计的参考温度测量方法应用于参考温度测量,并进行实验.结果表明,此方法能更准确地得到参考温度值,从而提高系统的测温精度.

With the change of the measurement error of the reference temperature,the measurement accuracy of Distributed Optical Fiber Temperature Sensors(DOFTS) changes as well.By analyzing the present reference temperature measurement methods,we put forward a novel reference temperature measurement method using two temperature sensors.The average temperature of the two sensors was used as the reference temperature.The experimental result shows that the accuracy of the SOFTS system is improved with the improvement of the accuracy of the reference temperature obtained with the novel method.