激光技术
激光技術
격광기술
Laser Technology
2015年
6期
854-857
,共4页
唐文靖%印新达%闫奇众%熊岩%刘军荣%董雷
唐文靖%印新達%閆奇衆%熊巖%劉軍榮%董雷
당문정%인신체%염기음%웅암%류군영%동뢰
光纤光学%聚类分析%分布式传感器%小波滤噪
光纖光學%聚類分析%分佈式傳感器%小波濾譟
광섬광학%취류분석%분포식전감기%소파려조
fiber optics%clustering analysis%distributed sensor%wavelet denoising
为了解决分布式光纤振动传感系统中多点同时扰动情况下扰动点定位和扰动时间难以判断的问题,采用信号处理方法,应用聚类分析技术,对系统生成的热点图先做阈值处理,提取目标对象,依聚类分析的结果,对扰动点进行定位和扰动时间加以确认。结果表明,该方法在排除噪声干扰的同时,较为准确、合理地对扰动行为的位置和扰动持续时间做出了判断。这属于事件等级划分的一个步骤,该研究为最终系统报警策略的规划提供了依据。
為瞭解決分佈式光纖振動傳感繫統中多點同時擾動情況下擾動點定位和擾動時間難以判斷的問題,採用信號處理方法,應用聚類分析技術,對繫統生成的熱點圖先做閾值處理,提取目標對象,依聚類分析的結果,對擾動點進行定位和擾動時間加以確認。結果錶明,該方法在排除譟聲榦擾的同時,較為準確、閤理地對擾動行為的位置和擾動持續時間做齣瞭判斷。這屬于事件等級劃分的一箇步驟,該研究為最終繫統報警策略的規劃提供瞭依據。
위료해결분포식광섬진동전감계통중다점동시우동정황하우동점정위화우동시간난이판단적문제,채용신호처리방법,응용취류분석기술,대계통생성적열점도선주역치처리,제취목표대상,의취류분석적결과,대우동점진행정위화우동시간가이학인。결과표명,해방법재배제조성간우적동시,교위준학、합리지대우동행위적위치화우동지속시간주출료판단。저속우사건등급화분적일개보취,해연구위최종계통보경책략적규화제공료의거。
To solve the problem that it is difficult to position the perturbation point and judge the perturbation time under multiple simultaneous perturbations in a distributed optical fiber vibration sensing system , signal processing method was carried out and clustering analysis technology was applied .Firstly, hotspot map gathered by the system was processed above a threshold , and then the target objects were extracted .According to the results of clustering analysis , perturbation points are positioned and perturbation time is confirmed .The results show that the method makes an accurate and reasonable judgment for positioning the perturbation behavior and perturbation duration and the noise interference is eliminated at the same time .This is one step of event classification.The study provides the basis for the final system alarm strategy .