摘要
利用一条高双折射单模光纤和一根普通单模光纤构成分布式光纤传感器,通过检测管道沿途发生的泄漏信息,用在时频域中具有表征信号局部特征能力的小波分析方法,确定光纤两端两个测试信号的时延,可以实时地监测管道沿途发生的泄漏情况。
A distributed optical fiber sensor is composed of one high birefringence and one signal mode optical fiber. The position of leaking point can be monitored in real time by confirming the time delay between the two measuring signals with the wavelet analysis which is capable of representing the local characteristics of the signal in the time and frequency field.
出处
《电子科技》
2009年第3期63-65,68,共4页
Electronic Science and Technology
关键词
光电检测
光纤传感
泄漏检测
分布式光纤
小波分析
photo electricity detecting
optical fiber sensing
leakage detection
distributed optical fiber
wavelet transforms
