Results 31 to 40 of about 71,491 (282)

Respiration rate and volume measurements using wearable strain sensors. [PDF]

open access: yes, 2019
Current methods for continuous respiration monitoring such as respiratory inductive or optoelectronic plethysmography are limited to clinical or research settings; most wearable systems reported only measures respiration rate.
Bar-Yoseph, Ronen   +9 more
core   +2 more sources

Magnetic Lateral Flow Immunoassay for Small Extracellular Vesicles Quantification: Application to Colorectal Cancer Biomarker Detection

open access: yesSensors, 2021
Colorectal cancer (CRC) is the third leading cause of cancer death and the fourth most common cancer in the world. Colonoscopy is the most sensitive test used for detection of CRC; however, their procedure is invasive and expensive for population mass ...
Amanda Moyano   +11 more
doaj   +1 more source

Micro air vehicles energy transportation for a wireless power transfer system [PDF]

open access: yes, 2019
The aim of this work is to demonstrate the feasibility use of an Micro air vehicles (MAV) in order to power wirelessly an electric system, for example, a sensor network, using low-cost and open-source elements.
Casas Piedrafita, Óscar   +3 more
core   +2 more sources

Microcontroller-Based Seat Occupancy Detection and Classification [PDF]

open access: yes, 2018
This paper presents a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which may be arranged in the seat or backrest of the chair, that ...
Cota Ruiz, Juan   +3 more
core   +1 more source

FINITE ELEMENT MODELLING OF INDUCTIVE SENSORS [PDF]

open access: yesCOMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 1992
Practical aspects of finite‐element modelling of magnetic fields and calculating integral parameters such as a reflected impedance in inductive sensing devices are discussed. The electromagnetics of such sensors is briefly explained and some practical modelling techniques are put forward. Excellent agreement with experiment is reported.
Sykulski, J.K., Stoll, R.L.
openaire   +2 more sources

Design Optimization of PCB-Based Rotary-Inductive Position Sensors

open access: yesSensors, 2022
This paper introduces a novel methodology to optimize the design of a ratiometric rotary inductive position sensor (IPS) fabricated in printed circuit board (PCB) technology.
Aldi Hoxha   +3 more
doaj   +1 more source

Fiber-optic interferometric sensor for monitoring automobile and rail traffic [PDF]

open access: yes, 2018
This article describes a fiber-optic interferometric sensor and measuring scheme including input-output components for traffic density monitoring. The proposed measuring system is based on the interference in optical fibers. The sensor, based on the Mach-
Cvejn, Daniel   +7 more
core   +1 more source

Sensor Fusion for Magneto-Inductive Navigation

open access: yesIEEE Sensors Journal, 2020
Magneto-inductive navigation is an inexpensive and easily deployable solution to many of today's navigation problems. By utilizing very low frequency magnetic fields, magneto-inductive technology circumvents the problems with attenuation and multipath that often plague competing modalities.
Johan Wahlstrom   +5 more
openaire   +5 more sources

Low-cost autonomous 3-D monitoring systems for hydraulic engineering environments and applications with limited accuracy requirements [PDF]

open access: yes, 2010
The details of developing autonomous 3-D motion monitoring systems based on commercial off-the-shelf (COTS) motion sensors for hydraulic environments are discussed. Possible areas of application, are river bed sediment transport monitoring and monitoring
Dwivedi, Ambuj   +5 more
core   +2 more sources

Situations in traffic - how quickly they change [PDF]

open access: yes, 2010
Spatio-temporal correlations of intensity of traffic are analysed for one week data collected in the motorway M-30 around Madrid in January 2009. We found that the lifetime of these correlations is the shortest in the evening, between 6 and 8 p.m.
Krawczyk, M. J.   +2 more
core   +1 more source

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