Results 71 to 80 of about 1,218,742 (294)

FBG-based fibre-optic current sensors for power systems protection : laboratory evaluation [PDF]

, 2009
Conventional differential current unit protection schemes rely on a pair of electronic protection relays that measure current phasors separately at the boundaries of the protected zone.
Booth, Campbell, Dysko, Adam, Niewczas, Pawel, Orr, P.   +3 more
core  

All-optical differential current detection technique for unit protection applications [PDF]

, 2013
In this paper we demonstrate a novel, all-optical differential current protection scheme. By monitoring the optical power reflected from two matched hybrid fiber Bragg grating current sensors and using a simple optoelectronic threshold detector, an ...
Fusiek, Grzegorz, Niewczas, Pawel, Orr, Philip, Wang, Hao   +3 more
core   +1 more source

The Fate (Outcome) of Clinically Apparent Single Lesion and Oligofocal Nephroblastomatosis Treated According to SIOP/GPOH Protocols for Wilms Tumor

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The management of clinically apparent single lesions or oligofocal nephroblastomatosis, a facultative precursor of nephroblastoma, remains debated. Methods We retrospectively analyzed 37 patients with clinically apparent single or oligofocal nephroblastomatosis (two to three lesions per kidney) among 2347 patients registered between
Nils Welter, Jens‐Peter Schenk, Jenny Wegert, Manfred Gessler, Leo Kager, Stefan Wagenpfeil, Marina Müller, Jean‐Michel Wolff, Joerg Fuchs, Steven W. Warmann, Clemens‐Magnus Meier, Jochen Hubertus, Christian Rübe, Christian Vokuhl, Patrick Melchior, Lena Tschirner, Norbert Graf, Rhoikos Furtwängler   +17 more
wiley   +1 more source

High-Precision, Self-Powered Current Online Monitoring System Based on TMR Sensors Array for Distribution Networks

Sensors
Establishing a maintenance-free current sensing network across the entire power grid to facilitate wide-area online monitoring is crucial for realizing a smart grid.
Zhengang An, Lei Zhang, Zhi Wang, Yanyun Fan, Zhiwei Zu, Zhengzhe Li, Dachao Li   +6 more
doaj   +1 more source

Non-Destructive Current Sensing for Energy Efficiency Monitoring in Buildings with Environmental Certification

Sensors, 2015
Nowadays, buildings environmental certifications encourage the implementation of initiatives aiming to increase energy efficiency in buildings. In these certification systems, increased energy efficiency arising from such initiatives must be demonstrated.
Lia Toledo Moreira Mota, Alexandre de Assis Mota, Lorenzo Campos Coiado   +2 more
doaj   +1 more source

CURRENT PROSPECTS FOR ASTROD INERTIAL SENSOR

International Journal of Modern Physics D, 2008
The Astrodynamical Space Test of Relativity using Optical Devices (ASTROD) is a multi-purpose relativity mission concept. ASTROD's scientific goals are the measurement of relativistic and solar system parameters to unprecedented precision, and the detection and observation of low-frequency gravitational waves to frequencies down to 5 × 10-6 Hz.
openaire   +2 more sources

Sharing Human-Generated Observations by Integrating HMI and the Semantic Sensor Web [PDF]

, 2012
Current “Internet of Things” concepts point to a future where connected objects gather meaningful information about their environment and share it with other objects and people.
Bizer, Bröring, David Conejero, David Díaz-Pardo, Goodchild, Harel, Hervás, Jesús Bernat, José Luis Blanco, Kuter, Luis Hernández Gómez, López de Ipiña, Sheth, Sigüenza, Sundmaeker, Vasile Vancea, Vollrath, Weiser, Álvaro Sigüenza   +18 more
core   +4 more sources

Balancing Cost and Precision: An Experimental Evaluation of Sensors for Monitoring in Electrical Generation Systems

Sensors
The growing adoption of renewable energy conversion systems and smart infrastructures has increased the demand for accurate monitoring solutions to ensure system performance and reliability, as well as seamless integration with cloud-based platforms ...
Janeth Alcalá, J. Antonio Juárez, Víctor Cárdenas, Saida Charre-Ibarra, Juan González-Rivera, Jorge Gudiño-Lau   +5 more
doaj   +1 more source

Sliding Mode Observer-Based Current Sensor Fault Reconstruction and Unknown Load Disturbance Estimation for PMSM Driven System

Sensors, 2017
This paper proposes a new scheme of reconstructing current sensor faults and estimating unknown load disturbance for a permanent magnet synchronous motor (PMSM)-driven system.
Kaihui Zhao, Peng Li, Changfan Zhang, Xiangfei Li, Jing He, Yuliang Lin   +5 more
doaj   +1 more source

Constant current source for converting absolute temperatures to analog voltages [PDF]

, 1970
Circuit configuration consisting of matched differential amplifier, temperature compensated zener diode, and low pinchoff-voltage field effect transistor provides accurate and stable current supply for temperature sensor ...
Padilla, J. R.
core   +1 more source