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研究生:王順民
研究生(外文):Shuen-Min Wang
論文名稱:光纖光柵多工應變感測系統之製作與研究
論文名稱(外文):The Fabrication and Study of Multi-point Fiber Grating Sensor System
指導教授:王立康
指導教授(外文):Prof. Li-Karn Wang
學位類別:碩士
校院名稱:國立清華大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:82
中文關鍵詞:多工光纖光柵感測系統光纖光柵
外文關鍵詞:Multi-pointFiber Grating Sensor SystemFBG
相關次數:
  • 被引用被引用:10
  • 點閱點閱:150
  • 評分評分:
  • 下載下載:34
  • 收藏至我的研究室書目清單書目收藏:0
在這個論文中,我們提供了溫度無感布拉格式光纖光柵應力量測系統,使用了偵測光功率而求知應力的準位.使用了二條為一組的布拉格式光纖光柵在其反射頻譜均相同下,再加上光切換器達成多工量測.
  
In this thesis, we propose a temperature-insensitive Fiber Bragg Grating strain sensor system, using the new method of detecting the optical power to determine the level of stresses. We achieve temperature insensitivity by using two optical fiber Bragg gratings with similar reflection spectra, and use an optical switch to achieve multi-point fiber bragg grating strain sensing.
In this thesis, we modify a previous measuring scheme to acquire a practice multi-point fiber bragg grating strain sensor. The new scheme is cost-effective .Compared with previous sensing schemes is no crosstalk, and easy to control. Our prototype is able to detect, separately, the changes of stresses at different positions.
As for the effects of power fluctuation, we also provide a solution in this thesis. We used a microprocessor to obtain a division circuit functionally in reducing the effect of power fluctuations .In the strain measurement schemes , we used an backward ASE of EDFA as a broadband light source, and then control microprocessor to choose the reflection signal we want via an optical switch. Then we had two optical signals input to optical photo detectors, and used the electric circuit which controlled by the microprocessor to process the data so that we can see information in the LCD.
目錄
第一章 簡介……………………………………………………………04
1-1 布拉格式光纖光柵的應用回顧 …………………………………04
1-2 論文架構…………………………………………………………05
第二章 布拉格光纖光柵原理與實驗介紹……………………………06
2-1 布拉格光纖光柵介紹 ……………………………………………06
2-2 研究動機 …………………………………………………………07
2-3實驗改進之處………………………………………………………08
2-4 實驗介紹 …………………………………………………………08
2-5實驗方法 …………………………………………………………10
2-6光纖之損失 ………………………………………………………10
2-7光開關 ……………………………………………………………12
2-8 Bragg condition 的理論分析 …………………………………13
2-9 布拉式光纖光柵的應力及溫度特性 ……………………………15
第三章 實驗架構與量測………………………………………………32
3-1研究方法與原理-溫度無感之多工應力感測器原理 ……………32
3-2應力感測試驗 ……………………………………………………33
3-3 串音試驗 …………………………………………………………34
3-4除法電路試驗………………………………………………………35
3-5溫度無感試驗………………………………………………………37
3-6實驗中的問題與討論………………………………………………38
第四章 電路架構與程式………………………………………………65
4-1 OPM電路示意圖……………………………………………………65
4-2 OSW電路示意圖……………………………………………………65
4-3 OSW介紹與使用……………………………………………………66
4-4基本8051程式語法介紹………………………………………66
第五章 結論 …………………………………………………………79
參考文獻 ………………………………………………………………80
參考文獻
  
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