發(fā)布時間：2018-04-26 10:39

  本文選題：布里淵光頻域分析技術(shù) + 布里淵光時域分析技術(shù)�。� 參考：《防災(zāi)減災(zāi)工程學(xué)報》2015年06期

【摘要】：在實驗的基礎(chǔ)上對新型分布式光纖監(jiān)測技術(shù)——布里淵頻域分析技術(shù)(BOFDA)的感測性能進行了測試與分析,其空間分辨率可達20cm,測試精度可達±2με,測試重復(fù)性為±4με;通過與布里淵光時域分析技術(shù)(BOTDA)測試性能的比較,對BOFDA的測試性能進行了評價,分析了應(yīng)變過渡區(qū)產(chǎn)生的原因;通過BOFDA等強度梁實驗,并與電阻應(yīng)變片測試結(jié)果和理論計算值比較,證明了BOFDA優(yōu)異的測試性能。最后,對BOFDA在各類工程防災(zāi)減災(zāi)監(jiān)測中可能遇到傳感光纜的保護及溫度補償問題進行了分析,并提出相應(yīng)解決方案。
[Abstract]:Based on the experiment, the sensing performance of Brillouin Frequency Domain Analysis (Brillouin Frequency Domain Analysis), a new distributed optical fiber monitoring technology, is tested and analyzed. The spatial resolution can reach 20 cm, the measurement precision is 鹵2 渭 蔚, and the test repeatability is 鹵4 渭 蔚. By comparing with the Brillouin optical time domain analysis technique, the test performance of BOFDA is evaluated, and the causes of strain transition region are analyzed. The excellent testing performance of BOFDA is proved by comparing the test results with the results of resistance strain gauges and the theoretical calculation results through the experiments of BOFDA equal strength beams. Finally, the problems of protection and temperature compensation of sensing cables in various engineering disaster prevention and mitigation monitoring by BOFDA are analyzed, and the corresponding solutions are put forward.
【作者單位】： 南京大學(xué)地球科學(xué)與工程學(xué)院;蘇州南智傳感科技有限公司;
【基金】：國家自然科學(xué)基金重點項目(41230636) 國家科技支撐計劃項目(2012BAK10B05) 國家重點基礎(chǔ)研究發(fā)展計劃(973計劃)項目(2011CB710605)資助
【分類號】：TU196

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