Open AccessCompression and Enhancement of Multiscale Vibration Signals Based on Φ-OTDR
Author(s) -
Yue Zhang,
Song Wang,
Yanzhu Hu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/440/2/022073
Subject(s) - optical time domain reflectometer , signal (programming language) , vibration , computer science , sampling (signal processing) , time domain , fourier transform , reflection (computer programming) , acoustics , signal processing , compression (physics) , frequency domain , optical fiber , electronic engineering , fiber optic sensor , materials science , telecommunications , engineering , physics , computer vision , fiber optic splitter , radar , quantum mechanics , detector , programming language , composite material
Phase optical time domain reflection (Φ-OTDR) is a distributed optical fiber sensing technology. Its output data contains amplitude, time and other information, so it can accurately reflect various abnormal events. However, due to the high sampling frequency and the large number of sampling points, the amount of data of the vibration signal outputted by it is huge. In order to facilitate the analysis of signal features and optimize the storage space of data, this paper combines Fast Fourier Transform and multi-scale detail enhancement to enhance the vibration signal features while realizing the vibration signal compression.