scholarly journals Optical Fiber Based Distributed Mechanical Vibration Sensing

2021 ◽  
Author(s):  
Vít Novotný ◽  
Petr Sysel ◽  
Aleš Prokeš ◽  
Pavel Hanák ◽  
Karel Slavíček ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Mechanical Vibration ◽  
Single Mode ◽  
Mechanical Vibrations ◽  
Real Situation ◽  
Optical Link ◽  
Distributed Sensor ◽  
Sensing System ◽  
System Components ◽  
Vibration Sensing

The distributed long-range sensing system using the standard telecommunication single-mode optical fiber in a function of a distributed sensor for sensing of mechanical vibrations is described. Various events generating vibrations such as walking or running person, moving cars, trains and others can be detected, localized and classified. The sensor and related sensing system components were designed and constructed and the system was tested both in the laboratory and in the real situation with 88 km telecom optical link, and the results are presented.

scholarly journals Long-Range Optical Fiber Based Distributed Mechanical Vibration Sensing

2021 ◽  
Author(s):  
Vít Novotný ◽  
Petr Sysel ◽  
Aleš Prokeš ◽  
Pavel Hanák ◽  
Karel Slavíček ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Mechanical Vibration ◽  
Single Mode ◽  
Mechanical Vibrations ◽  
Real Situation ◽  
Optical Link ◽  
Distributed Sensor ◽  
Sensing System ◽  
Vibration Sensing

The paper deals with the sensing system utilizing the standard single-mode optical fiber as a distributed sensor for detection, localization and classification of the mechanical vibrations that can be generated by various events such as walking or running people, moving cars, trains, etc. Sensor system capabilities were tested both in the laboratory and in the real situation with 88 km telecom optical link and the results are presented.

scholarly journals Fiber Optic Based Distributed Mechanical Vibration Sensing

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4779
Author(s):  
Vít Novotný ◽  
Petr Sysel ◽  
Aleš Prokeš ◽  
Pavel Hanák ◽  
Karel Slavíček ◽  
...  
Keyword(s):  
Mechanical Vibration ◽  
Single Mode ◽  
Time Domain Reflectometry ◽  
Sensing System ◽  
Optical Time Domain Reflectometry ◽  
Measurement Results ◽  
Vibration Sensing ◽  
Phase Sensitive ◽  
Optical Time ◽  
Initial Measurement

The distributed long-range sensing system, using the standard telecommunication single-mode optical fiber for the distributed sensing of mechanical vibrations, is described. Various events generating vibrations, such as a walking or running person, moving car, train, and many other vibration sources, can be detected, localized, and classified. The sensor is based on phase-sensitive optical time-domain reflectometry (ϕ-OTDR). Related sensing system components were designed and constructed, and the system was tested both in the laboratory and in the real deployment, with an 88 km telecom optical link, and the results are presented in this paper. A two-fiber sensor unit, with a double-sensing range was also designed, and its scheme is described. The unit was constructed and the initial measurement results are presented.

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 Distributed Fiber-Optic Sensor for Detection and Localization of Acoustic Vibrations

2015 ◽  
Vol 22 (1) ◽  
pp. 111-118 ◽  
Author(s):  
Radim Sifta ◽  
Petr Munster ◽  
Petr Sysel ◽  
Tomas Horvath ◽  
Vit Novotny ◽  
...  
Keyword(s):  
Time Domain Reflectometry ◽  
Fiber Optic Sensor ◽  
Mechanical Vibrations ◽  
Distributed Sensor ◽  
Sensing System ◽  
Optical Time Domain Reflectometry ◽  
Distributed Fiber Optic Sensor ◽  
Phase Sensitive ◽  
Optical Time ◽  
Detection And Localization

Abstract A sensing system utilizing a standard optical fiber as a distributed sensor for the detection and localization of mechanical vibrations is presented. Vibrations can be caused by various external factors, like moving people, cars, trains, and other objects producing mechanical vibrations that are sensed by a fiber. In our laboratory we have designed a sensing system based on the Φ-OTDR (phase sensitive Optical Time Domain Reflectometry) using an extremely narrow laser and EDFAs.

Phase Demodulation Methods for Optical Fiber Vibration Sensing System: A Review

2021 ◽  
pp. 1-1
Author(s):  
Yan Li ◽  
Yu Wang ◽  
Lin Xiao ◽  
Qing Bai ◽  
Xin Liu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Sensing System ◽  
System A ◽  
Vibration Sensing ◽  
Phase Demodulation

Design of distributed Raman temperature sensing system based on single-mode optical fiber

2009 ◽  
Vol 2 (2) ◽  
pp. 215-218 ◽  
Author(s):  
Ziheng Xu ◽  
Deming Liu ◽  
Hairong Liu ◽  
Qizhen Sun ◽  
Zhifeng Sun ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Single Mode ◽  
Temperature Sensing ◽  
Single Mode Optical Fiber ◽  
Sensing System

Ultra-long Distance Distributed Optical Fiber Vibration Sensing System

2016 ◽  
Author(s):  
Macheng Lai ◽  
Qizhen Sun ◽  
Kuan Peng ◽  
Xiaolei Li ◽  
Xiang Li ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Long Distance ◽  
Sensing System ◽  
Vibration Sensing ◽  
Distributed Optical Fiber
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