Results 31 to 40 of about 137,818 (293)

Capacitive Phase Shift Detection for Measuring Water Holdup in Horizontal Oil–Water Two-Phase Flow

open access: yesSensors, 2018
In this paper, a phase shift detection system of flow impedance is designed based on a concave capacitance sensor (CCS). The flow impedance of oil–water stratified flow is investigated by establishing an equivalent circuit model and a finite ...
Hongxin Zhang   +4 more
doaj   +1 more source

Resonant Gas Sensing in the Terahertz Spectral Range Using Two-Wire Phase-Shifted Waveguide Bragg Gratings

open access: yesSensors, 2023
The development of low-cost sensing devices with high compactness, flexibility, and robustness is of significance for practical applications of optical gas sensing. In this work, we propose a waveguide-based resonant gas sensor operating in the terahertz
Yang Cao   +3 more
doaj   +1 more source

Phase Interrogation of Diaphragm-Based Optical Fiber Acoustic Sensor Assisted by Wavelength-Scanned Spectral Coding

open access: yesIEEE Photonics Journal, 2018
In this paper, we proposed a phase interrogation method for diaphragm-based interferometric optical fiber acoustic sensor based on the spectral coding process.
Xin Fu   +6 more
doaj   +1 more source

Environmental Sensor Networks: a revolution in the earth system science? [PDF]

open access: yes, 2006
Environmental Sensor Networks (ESNs) facilitate the study of fundamental processes and the development of hazard response systems. They have evolved from passive logging systems that require manual downloading, into ‘intelligent’ sensor networks that ...
Martinez, Kirk   +3 more
core   +1 more source

A Phase-Intensity Surface Plasmon Resonance Biosensor for Avian Influenza A (H5N1) Detection

open access: yesSensors, 2017
In this paper, we present a phase-intensity surface plasmon resonance (SPR) biosensor and demonstrate its use for avian influenza A (H5N1) antibody biomarker detection.
Chi Lok Wong   +5 more
doaj   +1 more source

An Ultrasonic Sensor for Distance Measurement in Automotive Applications [PDF]

open access: yes, 2001
This paper describes an ultrasonic sensor that is able to measure the distance from the ground of selected points of a motor vehicle. The sensor is based on the measurement of the time of flight of an ultrasonic pulse, which is reflected by the ground. A
Parvis, Marco, Carullo, Alessio
core   +1 more source

ADRC-Based Robust and Resilient Control of a 5-Phase PMSM Driven Electric Vehicle

open access: yesMachines, 2020
The selection of electric machines for an Electric Vehicle (EV) is mainly based on reliability, efficiency, and robustness, which makes the 5-phase Permanent Magnet Synchronous Motor (PMSM) among the best candidates.
Abir Hezzi   +5 more
doaj   +1 more source

Evaluation of Coating Thickness Using Lift-Off Insensitivity of Eddy Current Sensor

open access: yesSensors, 2021
Defect detection in ferromagnetic substrates is often hampered by nonmagnetic coating thickness variation when using conventional eddy current testing technique. The lift-off distance between the sample and the sensor is one of the main obstacles for the
Xiaobai Meng   +4 more
doaj   +1 more source

Reference Phase Stabilizer for Distributed Underwater Sonar Systems

open access: yesSensors, 2018
An optical fiber is a promising approach for data and clock transmission in distributed underwater sonar systems. However, synchronization is a critical challenge in distributed sonar systems, which mandates accurate clock synchronization down to a sub ...
Lijie Yang   +3 more
doaj   +1 more source

Estimation of temperature inside unsteady cavitation in high-temperature water

open access: yesJournal of Fluid Science and Technology, 2022
Cavitation is a phenomenon that degrades the performance of fluid machinery, whereas the thermodynamic self-suppression effect of cavitation is prominent in pumps transporting cryogenic fluids because the effect suppresses cavity development.
Yuma OKUBO, Junnosuke OKAJIMA, Yuka IGA
doaj   +1 more source

Home - About - Disclaimer - Privacy