Results 21 to 30 of about 8,553,533 (250)
Energy-efficient sensing in wireless sensor networks using compressed sensing [PDF]
, 2014 Sensing of the application environment is the main purpose of a wireless sensor network. Most existing energy management strategies and compression techniques assume that the sensing operation consumes significantly less energy than radio transmission ...
Razzaque, Mohammad Abdur +5 more
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Development of a fibre optic distributed acoustic sensor [PDF]
, 2022 Fibre optic Distributed Acoustic Sensor (DAS) is a particular sensor which offers the possibility of measuring at thousands of points simultaneously only using, as sensing mean, the normal optical fibre.
Toigo, Enrico
core
Research Progress in Distributed Acoustic Sensing Techniques
, 2022 Distributed acoustic sensing techniques based on Rayleigh scattering have been widely used in many applications due to their unique advantages, such as long-distance detection, high spatial resolution, and wide sensing bandwidth.
Yi, Jichao +19 more
core +1 more source
The Effectiveness of Distributed Acoustic Sensing (DAS) for Broken Rail Detection
Energies, 2023 Broken rails remain one of the main causes of railway accidents despite improved rail quality and inspections. Today, signalling system with track circuits are often used to detect broken rails, however new signalling systems such as the European Train ...
Adrian Wagner +4 more
doaj +1 more source
Hybrid distributed acoustic-temperature sensing using a few-mode fiber
, 2020 Optical fiber distributed acoustic sensor (DAS) and distributed temperature sensor (DTS) are considerably desirable for many important applications including oil and gas industry.
Frode Hveding +11 more
core +1 more source
Ultrasonic sensing using Yb3+/Er3+-codoped distributed feedback fibre grating lasers. [PDF]
, 2005 Yb3+/Er3+-codoped distributed feedback (YbEr-DFB) fibre grating lasers have been investigated for the detection of ultrasonic Lamb waves generated in an aluminum plate. Two sensor configurations have been investigated. A path length imbalanced readout
Ye, Chen-Chun, Tatam, Ralph P.
core +1 more source
New role for communication fibre optic cables in water utility for leak detection on main water pipeline [PDF]
Tehnika, 2015 During construction of main water pipeline it is usual practice to lay fibre optic communication cable along water pipe. This cable is one of the up to date communication media which is used for the connection purposes of water control SCADA equipment as
Graovac Radojica M. +1 more
doaj +1 more source
, 2021 According to the latest report by IMARC Group,the global distributed acoustic sensing market exhibited double-digit growth. Distributed acoustic sensing (DAS) refers to a photonic sensing technology that detects vibrations and converts standard ...
Elena
core +1 more source
Distributed acoustic sensing of debris flows in a physical model [PDF]
, 2020 We used a distributed acoustic sensing (DAS) system to monitor the evolution of debris flows in an inclined flume that was instrumented with approx. 800 m of fiber, wound in 20 coils acting as an array of coherent acoustic sensors.
Deganutti, Andrea +30 more
core +1 more source
Traffic Flow Detection Using Distributed Fiber Optic Acoustic Sensing
IEEE Access, 2018 This paper proposes a novel method for traffic flow detection using distributed optical fiber acoustic sensing (DAS). Different from the traditional traffic flow detection method, this method detects the traffic vibration signal using a fiber optic cable.
Huiyong Liu +5 more
doaj +1 more source