砷化镓吸收式光纤温度传感技术的解调方法

Demodulation Method about Gallium Arsenide Absorption Fiber Optic Temperature Sensing Technology

针对目前砷化镓吸收式光纤温度传感技术的数据解调方法叙述不详解且解调精度不高,本文以砷化镓光纤温度传感器的吸收光谱随温度变化的关系为基础,研究了一种基于光谱分析的砷化镓吸收式光纤温度传感技术的温度解调方法,提出一种新的数据处理流程。本文采用标准温度测量系统验证了该解调方法和数据处理流程。结果表明,在25℃~70℃区间内,测量精度小于±0.1℃;在70℃~250℃区间,测量精度小于±0.7℃。

For the current of the Gallium Arsenide optical fiber temperature sensing technology not described in detail and have low demodulation precision, based on the relationship of absorption spectrum of the Gallium Arsenide fiber optic temperature sensor varying with temperature, a new data processing flow is proposed, and a temperature demodulation method is researched based on the spectral analysis of Arsenide fiber absorption optical fiber temperature sensing technology. This article used standard temperature measurement system to verify the reasonableness of the demodulation method and data processing procedure. The results show that in the range of 25℃~70℃, the measurement accuracy is less than ±0.1℃, and in the range of 70℃~250℃, the measurement accuracy is less than ±0.7℃.