Results 41 to 50 of about 71,491 (282)

A ferrofluid-based sensor to measure bottom shear stresses under currents and waves [PDF]

open access: yes, 2018
This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Hydraulic Research on 2018, available online at: http://www.tandfonline.com/10.1080/00221686.2017.1397779The measurement of the near-bottom flow ...
Foti, Enrico   +3 more
core   +2 more sources

Wireless Intraocular Pressure Sensing Using Microfabricated Minimally Invasive Flexible-Coiled LC Sensor Implant [PDF]

open access: yes, 2010
This paper presents an implant-based wireless pressure sensing paradigm for long-range continuous intraocular pressure (IOP) monitoring of glaucoma patients. An implantable parylene-based pressure sensor has been developed, featuring an electrical LC-
Chen, Po-Jui   +4 more
core   +1 more source

Study on online monitoring wear debris sensor of wind turbine gearbox

open access: yesThe Journal of Engineering, 2019
Lubrication is one of the critical factors for the normal operation of wind turbine's gearbox, which carries abundant and various wear debris. Accordingly, these debris reflects the running state of the equipment and forecasts the early fault of wind ...
Xiangqi Zhang   +3 more
doaj   +1 more source

Characterization of LC sensor structures realized by PCB and LTCC technology for determining moisture in building materials [PDF]

open access: yesProcessing and Application of Ceramics, 2018
This paper compares performances of two wireless sensors for measuring water concentration in building materials, one manufactured by the printed circuit board (PCB) technology and another one using the low temperature co-fired ceramics (LTCC) process ...
Milan R. Radovanović   +3 more
doaj   +1 more source

Design enhancements of the smart sediment particle for riverbed transport monitoring [PDF]

open access: yes, 2009
This paper discusses new enhancements that are being made to the existing ‘Smart Sediment Particle’. The smart sediment particle has been designed and implemented to track its own 3-dimensional trajectory when placed in a riverbed.
Hu, Aiguo Patrick   +2 more
core   +2 more sources

Inductive salinity sensor

open access: yes, 2023
Salinity determinations are usually made indirectly, measuring electrical conductivity, which depends on salinity and temperature. Unusual conductivity and salinity are indicative of pollution, regardless anthropogenic or natural sources. Aquatic species adapt to specific salinity levels.
Barroso, Maria   +4 more
openaire   +1 more source

Current derivative measurement using closed-loop hall-effect current sensor

open access: yesThe Journal of Engineering, 2019
This paper discusses a method of the current derivative measurement using a standard closed-loop Hall-effect current sensor. The proposed method can operate with PWM-driven inverters and provides the estimation of motor-phase inductances required for an ...
A. Anuchin   +5 more
doaj   +1 more source

ISO26262-Compliant Inductive Long-Stroke Linear-Position Sensors as an Alternative to Hall-Based Sensors for Automotive Applications

open access: yesSensors, 2022
To ensure safety, vehicle companies require position sensors that maintain accuracy and avoid target loss even in harsh automotive environments. Most vehicle position sensors are Hall-based, but even improved gradiometric 3D Hall sensors using the ...
Hyung-Sok Lim, Choul-Young Kim
doaj   +1 more source

RF communication with implantable wireless device: effects of beating heart on performance of miniature antenna [PDF]

open access: yes, 2014
The frequency response of an implantable antenna is key to the performance of a wireless implantable sensor. If the antenna detunes significantly, there are substantial power losses resulting in loss of accuracy.
Bahmanyar, MR   +6 more
core   +1 more source

Design and Analysis of Receiver Coils with Multiple In-Series Windings for Inductive Eddy Current Angle Position Sensors Based on Coupling of Coils on Printed Circuit Boards

open access: yesSensors
We present a method for improving the amplitude and angular error of inductive position sensors, by advancing the design of receiver coil systems with multiple windings on two layers of a printed circuit board.
Stefan Kuntz   +3 more
doaj   +1 more source

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