【摘要】：基于單通道盲信號分離技術(shù)(Single Channel Blind Source Separation,SCBSS)及單模-多模-單模(Single-mode-Multimode-Single-mode,SMS)光纖結(jié)構(gòu)的模間干涉理論,提出了一種多參量光纖傳感技術(shù),實現(xiàn)了振動與應(yīng)力、振動與溫度的同時測量。在振動與應(yīng)力同時測量時,振動頻率誤差為0.17 Hz,分離出的應(yīng)力信號與實驗操作吻合。在振動與線性降溫、自然升溫同時測量實驗中,振動頻率誤差均在0.60Hz以內(nèi)。線性降溫時,溫度誤差在7.13%以內(nèi);自然升溫時,溫度誤差在8.03%以內(nèi)。該方法結(jié)構(gòu)簡單,成本低廉,精度高,可推廣用于其他光纖傳感系統(tǒng),實現(xiàn)多參量同時測量。
[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.
【作者單位】： 北京交通大學(xué)理學(xué)院光信息科學(xué)與技術(shù)研究所;發(fā)光與光信息技術(shù)教育部重點實驗室;
【基金】：國家自然科學(xué)基金(61077048,61077014) 高等學(xué)校博士學(xué)科點專項科研基金(20120009110032) 北京市自然科學(xué)基金(4132035) 基本科研業(yè)務(wù)費(2012JBM103)
【分類號】：TP212;TN911.7

【參考文獻】

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