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Title: Identifications and classifications of human locomotion using Rayleigh-enhanced distributed fiber acoustic sensors with deep neural networks

Journal Article · · Scientific Reports

Abstract This paper reports on the use of machine learning to delineate data harnessed by fiber-optic distributed acoustic sensors (DAS) using fiber with enhanced Rayleigh backscattering to recognize vibration events induced by human locomotion. The DAS used in this work is based on homodyne phase-sensitive optical time-domain reflectometry (φ-OTDR). The signal-to-noise ratio (SNR) of the DAS was enhanced using femtosecond laser-induced artificial Rayleigh scattering centers in single-mode fiber cores. Both supervised and unsupervised machine-learning algorithms were explored to identify people and specific events that produce acoustic signals. Using convolutional deep neural networks, the supervised machine learning scheme achieved over 76.25% accuracy in recognizing human identities. Conversely, the unsupervised machine learning scheme achieved over 77.65% accuracy in recognizing events and human identities through acoustic signals. Through integrated efforts on both sensor device innovation and machine learning data analytics, this paper shows that the DAS technique can be an effective security technology to detect and to identify highly similar acoustic events with high spatial resolution and high accuracies.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
1730962
Alternate ID(s):
OSTI ID: 1816801; OSTI ID: 2222440
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 10; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (28)

Indoor Person Identification through Footstep Induced Structural Vibration conference January 2015
Multiplexable high-temperature stable and low-loss intrinsic Fabry-Perot in-fiber sensors through nanograting engineering journal January 2020
Fiber optic intrusion sensing based on coherent optical time domain reflectometry conference June 2007
A symmetric 3x3 coupler based demodulator for fiber optic interferometric sensors conference December 1991
Blue Rose perimeter defense and security system conference May 2006
Rayleigh scatter based order of magnitude increase in distributed temperature and strain sensing by simple UV exposure of optical fibre journal June 2015
A Novel Fiber Optic Based Surveillance System for Prevention of Pipeline Integrity Threats journal February 2017
Distributed Optical Fiber Sensors with Ultrafast Laser Enhanced Rayleigh Backscattering Profiles for Real-Time Monitoring of Solid Oxide Fuel Cell Operations journal August 2017
Perimeter security system based on fiber optic disturbance sensor conference January 2008
Real-time activity identification in a smart FBG-based fiber-optic perimeter intrusion detection system conference October 2012
Real Field Deployment of a Smart Fiber-Optic Surveillance System for Pipeline Integrity Threat Detection: Architectural Issues and Blind Field Test Results journal February 2018
Distributed OTDR-interferometric sensing network with identical ultra-weak fiber Bragg gratings journal January 2015
Spectrum Analysis and Convolutional Neural Network for Automatic Modulation Recognition journal June 2019
Improved demodulation scheme for fiber optic interferometers using an asymmetric 3×3 coupler journal January 1997
Advances in Fiber-optic Distributed Acoustic Sensors conference July 2018
A Sagnac interferometer sensor system for intrusion detection and localization conference August 2004
Multiple-Octave-Spanning Vibration Sensing Based on Simultaneous Vector Demodulation of 499 Fizeau Interference Signals from Identical Ultra-Weak Fiber Bragg Gratings Over 2.5 km journal January 2018
128km fully-distributed high-sensitivity fiber-optic intrusion sensor with 15m spatial resolution conference January 2014
Spectrum Analysis of EEG Signals Using CNN to Model Patient’s Consciousness Level Based on Anesthesiologists’ Experience journal January 2019
Polarization discrimination in a phase-sensitive optical time-domain reflectometer intrusion-sensor system journal January 2005
Multi-scale wavelet decomposition and its application in distributed optical fiber fences conference July 2015
High-temperature capabilities and limitations of fiber grating sensors conference September 1994
Feasibility study of the automated detection and localization of underground tunnel excavation using Brillouin optical time domain reflectometer conference May 2009
Unattended ground sensor based on fiber BRAGG grating technology conference May 2005
Recognition of a Phase-Sensitivity OTDR Sensing System Based on Morphologic Feature Extraction journal June 2015
Long Fiber-Optic Perimeter Sensor: Signature Analysis
  • Madsen, Christi; Bae, Taehan; Atkins, Robert
  • Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies https://doi.org/10.1364/PHAST.2007.PWA5
conference January 2007
FootprintID: Indoor Pedestrian Identification through Ambient Structural Vibration Sensing
  • Pan, Shijia; Yu, Tong; Mirshekari, Mostafa
  • Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, Vol. 1, Issue 3 https://doi.org/10.1145/3130954
journal September 2017
Wavelet Denoising Method for Improving Detection Performance of Distributed Vibration Sensor journal April 2012