摘要
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 fiber optic temperature sensing technique is one of the recent developed sensory technique.It takes a single optic fiber as both sensing and transmitting medium for temperature information ,and the spatial distribution and the temporal variation of temperature along the whole optical fiber can be measured.The aim of signal processing of distributed fiber optic temperature sensor is to extract the temperature information from extensive background noise as possible as exactly and fastly.it is important for realtime temperature monitoring of heavyduty equitment and smart civil structure.Based on the ratio of the Raman antiStokes to Stokes backscattering correlated with temperature variation,the signal processing techniques of distributed fiber optic sensor are presented to extract the temperature imformation and to enhance the signal to noise ratio.
出处
《压电与声光》
CSCD
北大核心
1998年第3期156-158,185,共4页
Piezoelectrics & Acoustooptics
关键词
分布式
光纤温度传感器
信号处理
传感器
distributed, fiber optic temperature sensor, signal processing
