Sensors

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A Hybrid Spatio-Temporal Data Indexing Method for Trajectory Databases
Sensors - Tập 14 Số 7 - Trang 12990-13005
Shengnan Ke, Jun Gong, Songnian Li, Qing Zhu, Xintao Liu, Yeting Zhang
In recent years, there has been tremendous growth in the field of indoor and outdoor positioning sensors continuously producing huge volumes of trajectory data that has been used in many fields such as location-based services or location intelligence. Trajectory data is massively increased and semantically complicated, which poses a great challenge on spatio-temporal data indexing. This pa...... hiện toàn bộ
Generation of Red-Shifted Cameleons for Imaging Ca2+ Dynamics of the Endoplasmic Reticulum
Sensors - Tập 15 Số 6 - Trang 13052-13068
Markus Waldeck‐Weiermair, Helmut Bischof, Sandra Blaß, András T. Deak, Christiane Klec, Thomas Graier, Clara A. Roller, René Rost, Emrah Eroğlu, Benjamin Gottschalk, Nicole Hofmann, Wolfgang F. Graier, Roland Malli
Cameleons are sophisticated genetically encoded fluorescent probes that allow quantifying cellular Ca2+ signals. The probes are based on Förster resonance energy transfer (FRET) between terminally located fluorescent proteins (FPs), which move together upon binding of Ca2+ to the central calmodulin myosin light chain kinase M13 domain. Most of the available cameleons consist of cyan and ye...... hiện toàn bộ
Sensor Clustering Using a K-Means Algorithm in Combination with Optimized Unmanned Aerial Vehicle Trajectory in Wireless Sensor Networks
Sensors - Tập 23 Số 4 - Trang 2345
Thanh‐Nam Tran, Thanh-Long Nguyen, Vinh Truong Hoang, Miroslav Vozňák
We examine a general wireless sensor network (WSN) model which incorporates a large number of sensors distributed over a large and complex geographical area. The study proposes solutions for a flexible deployment, low cost and high reliability in a wireless sensor network. To achieve these aims, we propose the application of an unmanned aerial vehicle (UAV) as a flying relay to receive and...... hiện toàn bộ
Application of Internet of Things and Sensors in Healthcare
Sensors - Tập 22 Số 15 - Trang 5738
Mohammed S. Al-kahtani, Faheem Khan, Whangbo Taekeun
The Internet of Things (IoT) is an innovative technology with billions of sensors in various IoT applications. Important elements used in the IoT are sensors that collect data for desired analyses. The IoT and sensors are very important in smart cities, smart agriculture, smart education, healthcare systems, and other applications. The healthcare system uses the IoT to meet global health c...... hiện toàn bộ
In-Situ Monitoring and Diagnosing for Fused Filament Fabrication Process Based on Vibration Sensors
Sensors - Tập 19 Số 11 - Trang 2589
Yongxiang Li, Wei Zhao, Qiushi Li, Tongcai Wang, Gong Wang
Fused filament fabrication (FFF) is one of the most widely used additive manufacturing (AM) technologies and it has great potential in fabricating prototypes with complex geometry. For high quality manufacturing, monitoring the products in real time is as important as maintaining the FFF machine in the normal state. This paper introduces an approach that is based on the vibration sensors a...... hiện toàn bộ
Filament Advance Detection Sensor for Fused Deposition Modelling 3D Printers
Sensors - Tập 18 Số 5 - Trang 1495
Enrique Soriano Heras, Fernando Blaya Haro, José de Agustín del Burgo, Manuel Enrique Islán Marcos, Roberto D’Amato
The main purpose of this paper is to present a system to detect extrusion failures in fused deposition modelling (FDM) 3D printers by sensing that the filament is moving forward properly. After several years using these kind of machines, authors detected that there is not any system to detect the main problem in FDM machines. Authors thought in different sensors and used the weighted objec...... hiện toàn bộ
Layer Contour Verification in Additive Manufacturing by Means of Commercial Flatbed Scanners
Sensors - Tập 20 Số 1 - Trang 1
David Blanco, Pedro Fernández, Á. Noriega, Braulio José Álvarez Álvarez, G. Valiño
Industrial adoption of additive manufacturing (AM) processes demands improvement in the geometrical accuracy of manufactured parts. One key achievement would be to ensure that manufactured layer contours match the correspondent theoretical profiles, which would require integration of on-machine measurement devices capable of digitizing individual layers. Flatbed scanners should be consider...... hiện toàn bộ
Filament Breakage Monitoring in Fused Deposition Modeling Using Acoustic Emission Technique
Sensors - Tập 18 Số 3 - Trang 749
Zhensheng Yang, Jin Li, Youruiling Yan, Mei Yiming
Polymers are being used in a wide range of Additive Manufacturing (AM) applications and have been shown to have tremendous potential for producing complex, individually customized parts. In order to improve part quality, it is essential to identify and monitor the process malfunctions of polymer-based AM. The present work endeavored to develop an alternative method for filament breakage id...... hiện toàn bộ
A Versatile Electronic Tongue Based on Surface Plasmon Resonance Imaging and Cross-Reactive Sensor Arrays—A Mini-Review
Sensors - Tập 17 Số 5 - Trang 1046
Laurie-Amandine Garçon, María Genua, Yanjie Hou, Arnaud Buhot, R. Calemczuk, Thierry Livache, Martial Billon, Christine Le Narvor, David Bonnaffé, Hugues Lortat‐Jacob, Yanxia Hou
Nowadays, there is a strong demand for the development of new analytical devices with novel performances to improve the quality of our daily lives. In this context, multisensor systems such as electronic tongues (eTs) have emerged as promising alternatives. Recently, we have developed a new versatile eT system by coupling surface plasmon resonance imaging (SPRi) with cross-reactive sensor ...... hiện toàn bộ
A Lossless Multichannel Bio-Signal Compression Based on Low-Complexity Joint Coding Scheme for Portable Medical Devices
Sensors - Tập 14 Số 9 - Trang 17516-17529
Dong–Sun Kim, Jung Ah Kwon
Research on real-time health systems have received great attention during recent years and the needs of high-quality personal multichannel medical signal compression for personal medical product applications are increasing. The international MPEG-4 audio lossless coding (ALS) standard supports a joint channel-coding scheme for improving compression performance of multichannel signals and i...... hiện toàn bộ
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