【摘要】：近些年來(lái),光纖光柵振動(dòng)傳感器在電力設(shè)備和民用工程結(jié)構(gòu)健康狀況在線診斷、故障點(diǎn)定位等領(lǐng)域具有廣闊的應(yīng)用前景。其中,基于摻鉺光纖激光器的光纖光柵振動(dòng)傳感器因其優(yōu)良的傳感性能成為研究的主要方向。本文首先介紹了光纖光柵激光傳感器的基本結(jié)構(gòu)、分類和研究現(xiàn)狀以及其在振動(dòng)傳感方面的研究進(jìn)展,并對(duì)光纖光柵激光傳感器的原理、摻鉺光纖激光器的基本原理、光纖光柵的應(yīng)變、溫度、振動(dòng)傳感檢測(cè)原理及其解調(diào)技術(shù)進(jìn)行理論研究,提出了一種采用雙邊緣濾波法解調(diào)振動(dòng)信號(hào)的基于摻鉺光纖激光器的光纖光柵振動(dòng)傳感系統(tǒng),并分析了系統(tǒng)的特性;利用Opti System仿真了摻鉺光纖激光器的輸出特性,對(duì)影響激光器輸出功率的參數(shù)進(jìn)行了優(yōu)化,得到了輸出耦合器的最佳分光比和摻鉺光纖的最佳長(zhǎng)度;改變光纖光柵的中心波長(zhǎng),仿真研究了振動(dòng)解調(diào)系統(tǒng)輸出功率與傳感光柵的中心波長(zhǎng)的關(guān)系,結(jié)果表明二者在一定傳感范圍內(nèi)呈線性關(guān)系,確定了系統(tǒng)的可行性;搭建了采用邊緣濾波法的基于摻鉺光纖激光器的光纖光柵振動(dòng)傳感系統(tǒng),使用懸臂梁式光纖光柵傳感器提供振動(dòng)信號(hào),通過(guò)改變摻鉺光纖長(zhǎng)度得到其在15 m處激光器有較大的輸出,實(shí)現(xiàn)了10 Hz、20 Hz、30 Hz低頻振動(dòng)信號(hào)的檢測(cè)。
[Abstract]:In recent years, fiber Bragg grating vibration sensors have been widely used in the field of on-line diagnosis and fault location of power equipment and civil engineering structures. Among them, fiber grating vibration sensor based on erbium-doped fiber laser has become the main research direction because of its excellent sensing performance. In this paper, the basic structure, classification and research status of fiber grating laser sensor and its research progress in vibration sensing are introduced, and the principle of fiber grating laser sensor and the basic principle of erbium-doped fiber laser are discussed. The strain, temperature, vibration sensing principle and demodulation technology of fiber Bragg grating (FBG) are studied theoretically. A fiber Bragg grating (FBG) vibration sensing system based on erbium-doped fiber laser is proposed, which demodulates the vibration signal by double edge filtering method. The output characteristics of erbium-doped fiber laser are simulated by Opti System, the parameters affecting the output power of the laser are optimized, and the optimum splitting ratio of output coupler and the optimum length of erbium-doped fiber are obtained. The relationship between the output power of the vibration demodulation system and the central wavelength of the sensing grating is simulated and studied by changing the central wavelength of the fiber grating. The results show that the relationship between the output power and the central wavelength of the sensor grating is linear in a certain range, and the feasibility of the system is determined. A fiber Bragg grating vibration sensing system based on erbium-doped fiber laser using edge filtering method is built. The cantilever fiber grating sensor is used to provide vibration signal. By changing the length of erbium-doped fiber, the laser output at 15m is obtained, and the detection of 10 Hz,20 Hz,30 Hz low frequency vibration signal is realized.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN248;TP212

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王潔玉;童崢嶸;曹曄;楊秀峰;;光纖光柵激光傳感器的研究現(xiàn)狀及其應(yīng)用[J];光通信技術(shù);2012年04期

2 王瓊;嚴(yán)南;;基于等強(qiáng)度懸臂梁的光纖傳感器設(shè)計(jì)研究[J];微計(jì)算機(jī)信息;2010年04期

3 孫華;劉波;周海濱;苗銀萍;蘭玉文;;一種基于等強(qiáng)度梁的光纖光柵高頻振動(dòng)傳感器[J];傳感技術(shù)學(xué)報(bào);2009年09期

4 何西坤;;基于F-P濾波器的光纖光柵振動(dòng)傳感解調(diào)系統(tǒng)的研究[J];工業(yè)計(jì)量;2008年03期

5 姚遠(yuǎn);易本順;肖進(jìn)勝;;光纖光柵傳感器的波長(zhǎng)解調(diào)技術(shù)研究進(jìn)展[J];光通信技術(shù);2007年11期

6 曹曄;劉波;開桂云;董孝義;;光纖光柵微振動(dòng)高速精密檢測(cè)系統(tǒng)的研究[J];光電子·激光;2006年01期

7 周少玲;光纖光柵激光器型傳感器及其研究現(xiàn)狀[J];光通信技術(shù);2004年08期

8 張洪波,黃海,沈竹;光纖Bragg光柵傳感器的解調(diào)方法[J];傳感器世界;2004年02期

9 王天樞,郭玉彬,李軍,張健生,白冰,李曉濱,胡貴軍;高信噪比可調(diào)諧環(huán)形摻鉺光纖激光器的研究[J];激光雜志;2003年06期

10 董新永,趙春柳,關(guān)柏鷗,譚華耀,袁樹忠,開桂云,董孝義;可調(diào)諧光纖環(huán)形腔激光器輸出特性的理論與實(shí)驗(yàn)研究[J];物理學(xué)報(bào);2002年12期

相關(guān)碩士學(xué)位論文 前2條

1 金曉晨;單縱模環(huán)形摻鉺光纖激光器研究[D];吉林大學(xué);2013年

2 李勤;一種環(huán)行腔摻鉺光纖激光器的研究[D];北京郵電大學(xué);2006年

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