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分布式光纤测温系统的分析

消耗积分:5 | 格式:rar | 大小:690 | 2010-12-23

杨福林

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基于拉曼散射的分布式光纤测温系统利用光纤作为温度的传导介质，测量沿光纤走向的连续空间的温度场分布。通过高速采集卡采集数据，并将数据进行去掉噪声干扰和累加的处理，得到准确的温度数据。这种系统的实用性是可以对光纤沿线的温度数据实时和定点监控。通过对拉曼散射所产生的斯托克斯光/反斯托克斯光与温度关系的研究，确定分布式光纤测温系统的温度测量方法，对所采集的信号利用小波变换进行去噪声和微弱信号的处理。
Abstract:
 The distributed fiber temperature detecting system based on raman scattering is utilized fiber as the transmission medium for temperature，which is able to measure the continuing temperature field distribution along the direction of fiber spread.This system can obtain the data via high-speed acquisition card.Its data can be more accurate after accumulating and without noise.This system is quite practicable as it can realize real time and orientation monitor on the whole route of fiber spread to get the entire data.This article analyses the relationship between temperature and Stokes/Anti-Stokes lines， which are generated by Raman Scattering. Also， the article sets a measurement for distributed fiber temperature system， including eliminating noise and dealing with weak signal.
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