Results 21 to 30 of about 27,733 (206)

Noninvasive Fetal Heart Rate Monitoring: Validation of Phonocardiography-Based Fiber-Optic Sensing and Adaptive Filtering Using the NLMS Algorithm

Advances in Electrical and Electronic Engineering, 2017
Here we present the evaluation results of our novel noninvasive phonocardiographic-based fiber-optic sensor for fetal Heart Rate (fHR) detection using adaptive filtering and the NLMS Algorithm.
Jan Nedoma, Marcel Fajkus, Stanislav Kepak, Jakub Cubik, Radana Kahankova, Petr Janku, Vladimir Vasinek, Homer Nazeran, Radek Martinek   +8 more
doaj   +1 more source

CENTRAL WAVELENGTH ADJUSTMENT OF LIGHT EMITTING SOURCE IN INTERFEROMETRIC SENSORS BASED ON FIBER-OPTIC BRAGG GRATINGS [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2015
The paper is focused on the investigation of fiber-optic interferometric sensor based on the array of fiber Bragg gratings. Reflection spectra displacement mechanism of the fiber Bragg gratings under the external temperature effects and the static ...
A. S. Aleynik, A. Y. Kireenkov, M. V. Mekhrengin, M. A. Chirgin, M. N. Belikin   +4 more
doaj   +1 more source

Ionizing Radiation Detectors Based on Ge-Doped Optical Fibers Inserted in Resonant Cavities

Sensors, 2015
The measurement of ionizing radiation (IR) is a crucial issue in different areas of interest, from environmental safety and industrial monitoring to aerospace and medicine.
Saverio Avino, Vittoria D'Avino, Antonio Giorgini, Roberto Pacelli, Raffaele Liuzzi, Laura Cella, Paolo De Natale, Gianluca Gagliardi   +7 more
doaj   +1 more source

Tapered Optical Fiber Functionalized with Palladium Nanoparticles by Drop Casting and Laser Radiation for H2 and Volatile Organic Compounds Sensing Purposes

Sensors, 2017
A comparative study on the sensing properties of a tapered optical fiber pristine and functionalized with the palladium nanoparticles to hydrogen and volatile organic compounds (VOCs), is presented.
Nancy Elizabeth González-Sierra, Luz del Carmen Gómez-Pavón, Gerardo Francisco Pérez-Sánchez, Arnulfo Luis-Ramos, Plácido Zaca-Morán, Jesús Manuel Muñoz-Pacheco, Fernando Chávez-Ramírez   +6 more
doaj   +1 more source

A compact online proton spectrometer for diagnosis of picosecond intense-laser accelerated protons

AIP Advances, 2023
A compact online proton spectrometer based on a CMOS plate detector was proposed for the diagnosis of picosecond intense-laser accelerated protons. Inside the CMOS plate detector, a composite structure that composed of a scintillator screen, a fiber ...
J. Teng, L. Q. Shan, B. Zhu, Z. G. Deng, S. K. He, Z. Q. Yuan, W. Qi, H. L. Wang, H. Wei, Y. H. Yan, H. Huang, T. K. Zhang, W. W. Wang, T. Yi, F. Zhang, M. H. Yu, L. Yang, F. Lu, Z. H. Yang, B. Zhang, B. Cui, C. Tian, K. N. Zhou, Y. C. Wu, J. Q. Su, W. M. Zhou, Y. Q. Gu   +26 more
doaj   +1 more source

Fiber-Optic Sensor for Identifying Liquids and Determining Solutions Concentration

Доклады Белорусского государственного университета информатики и радиоэлектроники
Fiber-optic sensors for identifying liquids and determining the concentration of solutions have been studied with the possibility of using various types of single-mode optical fibers produced by industry and widely used in optical cables and ...
A. O. Zenevich, T. G. Kovalenko, E. V. Novikov, S. V. Zhdanovich   +3 more
doaj   +1 more source

PHASE-ISOTROPIC CORNER REFLECTOR FOR FIBER-OPTIC CONVERTER

Известия высших учебных заведений: Проблемы энергетики, 2018
The article is devoted to the design of optical device ‒ phase isotropic corner reflector, which may find application as a mirror in the fiber-optic converter.
A. S. Nikitin, A. N. Borisov
doaj   +1 more source

Multi-sensor system using plastic optical fibers for intrinsically safe level measurements [PDF]

, 2004
A system for measuring liquid level in multiple tanks using optical fibe technology has been developed. Oil fiel service industry or any sector requiring liquid level measurements in flammabl atmospheres can be benefite from this intrinsically safe ...
Gonzalo, Ana B., Montalvo García, Julio, Vargas Palma, Salvador Elías, Vázquez García, María Carmen   +3 more
core   +3 more sources

A FIBER-OPTIC HYDROACOUSTIC PRESSURE SENSOR BASED ON INTERMODE INTERFERENCE [PDF]

Radio Physics and Radio Astronomy
Subject and Purpose. The use of the two-mode operation of an optical fi ber in fiber-optic sensors simplifies the interferometerdesign and enhances the reliability of sensing. Methods and Methodology.
I. V. Linchevskyi, M. V. Chursanova
doaj   +1 more source

Applied Fiber Optic Measurement for Geohydraulic Engineering [PDF]

, 1997
Engineers have long sought the possibility of measuring parameters such as temperature and pressure continuously in the underground with high precision, high spatial resolution and high band width of parameters. Distributed fibre optic measurement offers
Nishigaki, Makoto, Schreck, Martin
core   +1 more source