基于SCBSS信号处理技术的SMS多参量光纤传感系统

发布时间：2019-03-03 10:29

【摘要】：基于单通道盲信号分离技术(Single Channel Blind Source Separation,SCBSS)及单模-多模-单模(Single-mode-Multimode-Single-mode,SMS)光纤结构的模间干涉理论,提出了一种多参量光纤传感技术,实现了振动与应力、振动与温度的同时测量。在振动与应力同时测量时,振动频率误差为0.17 Hz,分离出的应力信号与实验操作吻合。在振动与线性降温、自然升温同时测量实验中,振动频率误差均在0.60Hz以内。线性降温时,温度误差在7.13%以内;自然升温时,温度误差在8.03%以内。该方法结构简单,成本低廉,精度高,可推广用于其他光纤传感系统,实现多参量同时测量。
[Abstract]:Based on the mode-to-mode interference theory of single-channel blind signal separation (Single Channel Blind Source Separation,SCBSS) and single-mode-multimode-single-mode (Single-mode-Multimode-Single-mode,SMS) fiber structures, a multi-parameter optical fiber sensing technique is proposed. The simultaneous measurement of vibration and stress, vibration and temperature is realized. When the vibration and stress are measured simultaneously, the stress signal separated from the vibration frequency error of 0.17 Hz, is in good agreement with the experimental operation. The error of vibration frequency is less than 0.60Hz in the experiment of vibration and linear cooling and natural heating at the same time. The temperature error is less than 7.13% for linear cooling and 8.03% for natural heating. This method has the advantages of simple structure, low cost and high precision. It can be used in other optical fiber sensing systems to realize multi-parameter simultaneous measurement.
【作者单位】：北京交通大学理学院光信息科学与技术研究所;发光与光信息技术教育部重点实验室;
【基金】：国家自然科学基金(61077048,61077014) 高等学校博士学科点专项科研基金(20120009110032) 北京市自然科学基金(4132035) 基本科研业务费(2012JBM103)
【分类号】：TP212;TN911.7

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