Sensors

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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
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
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
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
Indirect Determination of Mercury Ion by Inhibition of a Glucose Biosensor Based on ZnO Nanorods
Sensors - Tập 12 Số 11 - Trang 15063-15077
Chan Oeurn Chey, Zafar Hussain Ibupoto, K. Khun, Omer Nur, M. Willander
A potentiometric glucose biosensor based on immobilization of glucose oxidase (GOD) on ZnO nanorods (ZnO-NRs) has been developed for the indirect determination of environmental mercury ions. The ZnO-NRs were grown on a gold coated glass substrate by using the low temperature aqueous chemical growth (ACG) approach. Glucose oxidase in conjunction with a chitosan membrane and a glutaraldehyde...... hiện toàn bộ
Improving Measurement of Forest Structural Parameters by Co-Registering of High Resolution Aerial Imagery and Low Density LiDAR Data
Sensors - Tập 9 Số 3 - Trang 1541-1558
Huabing Huang, Peng Gong, Xiao Cheng, Nick Clinton, Zengyuan Li
Forest structural parameters, such as tree height and crown width, are indispensable for evaluating forest biomass or forest volume. LiDAR is a revolutionary technology for measurement of forest structural parameters, however, the accuracy of crown width extraction is not satisfactory when using a low density LiDAR, especially in high canopy cover forest. We used high resolution aerial ima...... hiện toàn bộ
Accurate Sybil Attack Detection Based on Fine-Grained Physical Channel Information
Sensors - Tập 18 Số 3 - Trang 878
Chundong Wang, Likun Zhu, Lanqi Yang, Zhentang Zhao, Lei Yang, Zheli Liu, Xiaochun Cheng
With the development of the Internet-of-Things (IoT), wireless network security has more and more attention paid to it. The Sybil attack is one of the famous wireless attacks that can forge wireless devices to steal information from clients. These forged devices may constantly attack target access points to crush the wireless network. In this paper, we propose a novel Sybil attack detectio...... hiện toàn bộ
Early Diagnosis of Breast Cancer
Sensors - Tập 17 Số 7 - Trang 1572
Lulu Wang
Early-stage cancer detection could reduce breast cancer death rates significantly in the long-term. The most critical point for best prognosis is to identify early-stage cancer cells. Investigators have studied many breast diagnostic approaches, including mammography, magnetic resonance imaging, ultrasound, computerized tomography, positron emission tomography and biopsy. However, these te...... hiện toàn bộ
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