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分布式光纤温度传感技术是近年来发展起来的一种新型传感技术,它利用一根光导纤维作为温度信息的传感和传导介质,可以测量整个光纤长度上的温度变化。分布式光纤温度传感器的信号处理技术,是将探测器输出的信号尽可能地去除干扰和噪声,从而得到准确而快速的温度显示和温度数据,这在解决大型重要结构的实时监控、准确测量等问题以及在组成智能材料结构等方面具有重要价值和应用潜力。文章对基于反斯托克斯/斯托克斯比值的分布式光纤温度传感器系统的信号处理技术,即温度信息的确定及信噪比的提高进行了全面而深入的研究,并据此建立了传感的信号处理系统。
Distributed optical fiber temperature sensing technology is a new sensing technology developed in recent years. It uses an optical fiber as the sensing and conducting medium of temperature information, and can measure the temperature change of the entire optical fiber length. Distributed optical fiber temperature sensor signal processing technology, the detector output signal as much as possible to remove interference and noise, resulting in accurate and rapid temperature display and temperature data, which is important in the settlement of large-scale real-time monitoring, accurate measurement, etc. Problems and the composition of the smart material structure has important value and potential applications. In this paper, the signal processing techniques based on the anti-Stokes / Stokes ratio distributed optical fiber temperature sensor system, that is, the determination of the temperature information and the improvement of the signal to noise ratio have been studied comprehensively and deeply Sensing signal processing system.