Research on composite interferometric distributed optical fiber vibration sensing technology

2021 ◽  
Author(s):  
Peihong Li ◽  
Zheng Wang ◽  
Yu Wang ◽  
Xin Liu ◽  
Qing Bai ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Sensing Technology ◽  
Vibration Sensing ◽  
Distributed Optical Fiber

Progress in Optical Fiber Interferometer Based Distributed Vibration Sensing Technology

2013 ◽  
Vol 50 (2) ◽  
pp. 020004 ◽  
Author(s):  
王贺 Wang He ◽  
孙琪真 Sun Qizhen ◽  
李晓磊 Li Xiaolei ◽  
刘德明 Liu Deming
Keyword(s):  
Optical Fiber ◽  
Sensing Technology ◽  
Vibration Sensing

scholarly journals A Combined Events Recognition Scheme Using Hybrid Features in Distributed Optical Fiber Vibration Sensing System

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 105609-105616
Author(s):  
Kun Liu ◽  
Zhenshi Sun ◽  
Junfeng Jiang ◽  
Pengfei Ma ◽  
Shuang Wang ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Hybrid Features ◽  
Sensing System ◽  
Vibration Sensing ◽  
Distributed Optical Fiber

scholarly journals Experimental Study on Deformation Monitoring of Bored Pile Based on BOTDR

2019 ◽  
Vol 9 (12) ◽  
pp. 2435 ◽  
Author(s):  
Lei Gao ◽  
Chuan Han ◽  
Zhongquan Xu ◽  
Yingjie Jin ◽  
Jianqiang Yan
Keyword(s):  
Optical Fiber ◽  
Noise Removal ◽  
Deformation Monitoring ◽  
Optical Time Domain Reflectometer ◽  
Fiber Sensing ◽  
Bored Pile ◽  
Sensing Technology ◽  
Optical Fiber Sensing ◽  
Unbiased Risk ◽  
Distributed Optical Fiber

In order to study the deformation of bored pile, it is necessary to monitor the strain of the pile. The distributed optical fiber sensing technology realizes the integration of sensing and transmission, which is incomparable with traditional point monitoring method. In this paper, the Brillouin optical time domain reflectometer (BOTDR) distributed optical fiber sensing technology is used to monitor the deformation of the bored pile. The raw data monitored by BOTDR is processed by the wavelet basis function, that can perform noise removal processing. Three different methods of noise removal are chosen. Through the processing, the db5 wavelet is used to decompose the deformation data of bored pile monitored by BOTDR into two layers. The decomposed high-frequency signal is denoised by the Stein-based unbiased risk threshold, rigrsure. The decomposed data is smoothed by the translational mean method, and the final data after denoising and smoothing processing is real and reliable. The results of this study will provide data support for the deformation characteristics of bored pile, and also show the advantages of distributed optical fiber sensing technology.

Secondary Development of DiTeSt-STA202 Based on Delphi and Access

2010 ◽  
Vol 36 ◽  
pp. 103-108
Author(s):  
Kuan Fang He ◽  
Ping Yu Zhu ◽  
Xue Jun Li ◽  
D.M. Xiao
Keyword(s):  
Optical Fiber ◽  
Data Processing ◽  
Data Storage ◽  
Secondary Development ◽  
Typical Application ◽  
Sensing Technology ◽  
Optical Fiber Sensing ◽  
Analysis System ◽  
Distributed Optical Fiber ◽  
User Friendly

Distributed optical fiber sensing technology in the dam safety monitoring has been applied. The most typical application is the Swiss distributed optical fiber DiTeSt-STA202 analyzer. The instrument can simultaneously measure the distribution of thousands of points in a fiber strian and temperature, and it is suitable for measurement of objects up to several kilometers, but it’s functions limit to the data acquisition and the most primitive conversion of the strain and temperature without the deeper data processing functions, and the interface is less of user-friendly nature and poor adaptability. In this paper, The secondary development of DiTeSt-STA202 is done by Delphi and ADO technology based on analysis of the data storage types and formats. The data processing and analysis system is achieved in an efficient and accurate way.

Sign in / Sign up

Export Citation Format

Share Document