本文選題：光纖　切入點(diǎn)：應(yīng)變　出處：《復(fù)旦大學(xué)》2014年碩士論文

【摘要】：近年來,隨著光通信技術(shù)的快速發(fā)展,且由于光纖本身的體小質(zhì)輕,易彎曲,抗電磁干擾性好,抗輻射性能好,特別適合與易燃、易爆、空間受嚴(yán)格限制及強(qiáng)電磁干擾等惡劣環(huán)境下使用,光纖應(yīng)變傳感器快速興起并發(fā)展。隨著科技的發(fā)展,在軍事、醫(yī)療和科研等領(lǐng)域中使用的電子儀器設(shè)備趨向于小型化、高精度發(fā)展,這對光纖應(yīng)變傳感器提出了更高的要求。本實驗組系統(tǒng)在全光纖干涉系統(tǒng)中構(gòu)建反饋環(huán),首次采用單芯光纖作為傳感光纖,結(jié)合快速傅里葉變換和小波變換對信號進(jìn)行處理,實現(xiàn)了對隨機(jī)擾動源的監(jiān)測定位。本文基于此種現(xiàn)狀和需求,對光纖應(yīng)變傳感器做了深入分析和研究,提出了用于短距離動態(tài)應(yīng)變測量和用于短距離靜態(tài)應(yīng)變測量的兩套實驗系統(tǒng),并取得了滿意的實驗結(jié)果。本文分為兩大部分,第一、二為第一大部分,主要著重于光纖應(yīng)變傳感器所涉及的原理的介紹和理論的分析。第三、四章為第二大部分,通過作者在對前一部分基礎(chǔ)理論和原理的引入,對光纖應(yīng)變傳感器進(jìn)行了深入研究。并設(shè)計提出了分別應(yīng)用于短距離動態(tài)應(yīng)變測量和短距離靜態(tài)應(yīng)變測量的兩套實驗系統(tǒng),介紹了實驗系統(tǒng)的構(gòu)建,詳細(xì)闡述了實驗原理,分析了實驗結(jié)果并提出了實驗系統(tǒng)未來的發(fā)展構(gòu)建。本文提出的實驗系統(tǒng)結(jié)構(gòu)簡單,測算方便,且具有較高的靈敏度,具有實際的使用意義。本文的工作為在實際應(yīng)用中進(jìn)行短距離精密儀器的應(yīng)變監(jiān)測提供了理論和實驗基礎(chǔ)。
[Abstract]:In recent years, with the rapid development of optical communication technology, and due to the small body weight of optical fiber itself, easy to bend, good electromagnetic interference resistance, good radiation resistance, especially suitable for flammable, explosive, With the development of science and technology, electronic instruments used in military, medical and scientific fields tend to be miniaturized. With the development of high precision, the optical fiber strain sensor is required higher. In this experiment system, the feedback loop is constructed in all optical fiber interference system, and the single core fiber is used as the sensing fiber for the first time. Combining FFT and wavelet transform to process the signal, the monitoring and localization of random disturbance source is realized. Based on this situation and demand, the fiber optic strain sensor is deeply analyzed and studied in this paper. Two sets of experimental systems for short range dynamic strain measurement and short distance static strain measurement are proposed, and satisfactory experimental results are obtained. This paper is divided into two parts, the first part is the first part, the second part is the first part. It mainly focuses on the introduction and theoretical analysis of the principles involved in the fiber optic strain sensor. Chapter three and four are the second part, through the introduction of the former part of the basic theory and principle. In this paper, the fiber optic strain sensor is deeply studied, and two sets of experimental systems are designed for short range dynamic strain measurement and short distance static strain measurement, respectively. The construction of the experimental system is introduced, and the experimental principle is described in detail. The experimental results are analyzed and the future development and construction of the experimental system are put forward. The proposed experimental system is simple in structure, convenient in measuring, and has high sensitivity. The work of this paper provides a theoretical and experimental basis for strain monitoring of short distance precision instruments in practical application.
【學(xué)位授予單位】：復(fù)旦大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.11

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 賈波,胡力;全光纖速度測量儀的研究[J];應(yīng)用光學(xué);1999年06期

，

本文編號：1670894