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检索条件"任意字段=Conference on Advanced Sensor Systems and Applications III"

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Magnetic field sensor based on Terfenol-D coated optical fibers 11

Magnetic field sensor based on Terfenol-D coated optical fib...

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conference on advanced sensor systems and applications XI

作者： Sun, Ruoqi Zhang, Liang Wei, Heming Shang, Yana Xiang, Lina Pang, Fufei Shanghai Univ Key Lab Specialty Fiber Opt & Opt Access Networks Joint Int Res Lab Specialty Fiber Opt & Adv Commu Shanghai Peoples R China

ISBN: (数字)9781510646520

ISBN: (纸本)9781510646520;9781510646513

In this paper, a magnetic field sensor based on Terfenol-D coated optical fibers is proposed and demonstrated. In our scheme, standard single mode fibers are coated by a thick layer of a magnetostrictive composite consisting of Terfenol-D particles dispersed in a polymer, which is then utilized as sensing elements. The magnetic field-induced strain on single mode fibers coated by the Terfenol-D was interrogated by an optical frequency-domain reflectometry (OFDR). The experimental results show that the sensitivity of the magnetostrictive fiber sensor depends on the coating characteristics including the surface of coated optical fiber. The sensitivity of the proposed sensor is 0.175 mu epsilon/mT.

关键词： magnetic field sensor Terfenol-D magnetostrictive optical frequency-domain reflectometry

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advanced Piezoelectric PVDF Fiber Films with Te Nanowires for Sustainable Energy Harvesting

Advanced Piezoelectric PVDF Fiber Films with Te Nanowires fo...

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IEEE International conference on Power and Energy systems (ICPES)

作者： Yuanyuan Li Pengfei Fang Yumin Wang Siwei Pan School of Physics and Technology Wuhan University Wuhan China Electric Power Research Institute of Guangdong Power Grid Co. Ltd. Guangzhou China

ISBN: (数字)9798350391329

ISBN: (纸本)9798350391336

Piezoelectric polymers are valued for their ease of fabrication and integration into devices, making them highly promising for self-powered systems and sensor applications that rely on converting mechanical energy into electrical energy. However, their relatively low piezoelectric performance compared to piezoelectric ceramics has limited their practical use. In this study, we present Te-doped PVDF piezoelectric nanofiber mats fabricated through electrospinning, demonstrating enhanced piezoelectric properties. Flexible piezoelectric nanogenerators (PENGs) incorporating 8 wt% Te in PVDF show a notable increase in output voltage, from 1.2 V to approximately 4.2 V, under a 5 N pressure at 3 Hz. This improvement allows the fiber mats to effectively convert mechanical energy into electrical energy, generating an instantaneous output power density of around $45.7 \mu \mathrm{W} / \text{cm}^applications$ , making them suitable for self-powered sensing and energy harvesting applications.

关键词： Optical fiber sensors Power system measurements Nanogenerators Nanocomposites Voltage sensor systems Nanowires Mechanical energy sensors Wearable devices

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Nanotech-Assisted Wireless Gas Monitoring

Nanotech-Assisted Wireless Gas Monitoring

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International conference on advanced Computing and Communication systems (ICACCS)

作者： Patil Nagalakshmi Ashokkumar N Shaik Riyaz Poola Pavan Sai Kiran Reddy Sai Krishna Vamsi Raghunath M Electronics and Communication Engineering Mohan Babu University (Erstwhile Sree Vidyanikethan Engineering College) Tirupati India Department of Mechatronics Bannari Amman Institute of Technology Sathyamangalam Erode

ISBN: (数字)9798350384369

ISBN: (纸本)9798350384376

Living and working in close proximity to hazardous gases poses significant risks to human lives, property, and the environment, necessitating vigilant monitoring and effective management. Traditional methods rely on strategically placed wired sensors and portable devices for employees, but dense deployments hinder mobility. To overcome this, we propose integrating nanotechnology and wireless sensor networks. Nanotechnology enables the development of small, highly sensitive gas sensors, while wireless sensor networks offer high spatio-temporal resolution, in-network processing. Our experience in monitoring ammonia with a wireless sensor network, comprising specialized and intermediate nodes, demonstrates the potential for more efficient and flexible solutions in hazardous environments. This innovative project introduces a cutting-edge system for monitoring toxic gases by integrating nanotechnology and wireless sensor networks. Utilizing Arduino microcontrollers, an LCD display, MQ2, MQ135, and MQ6 gas sensors, a buzzer, GSM module, and DHT11 humidity and temperature sensor, the system achieves real-time detection and alerting. The Arduino processes sensor data, displaying gas concentration levels on the LCD, triggering a buzzer, and activating the GSM module for immediate alerts in the presence of hazardous gases. The wireless sensor network ensures scalability and remote monitoring, making it well-suited for industrial, environmental, and safety applications. The supplementary DHT11 sensor provides additional data on humidity and temperature, contributing to comprehensive environmental analysis.

关键词： Temperature sensors GSM Wireless sensor networks Gases Humidity Liquid crystal displays sensors Monitoring Gas detectors Nanotechnology

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Forecasting in Shipments: Comparison of Machine Learning Regression Algorithms on Industrial applications for Supply Chain 23rd

Forecasting in Shipments: Comparison of Machine Learning R...

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23rd International conference on Computational Science and Its applications , ICCSA 2023

作者： Carissimo, Nunzio D’Ambrosio, Raffaele Guzzo, Milena Labarile, Sabino Scalone, Carmela 70029 Italy Department of Information Engineering and Information Science and Mathematics University of L’Aquila L’Aquila Italy

ISBN: (纸本)9783031368073

Supply chains are very complex systems and their correct and efficient management represents a fundamental challenge, in which the practical needs of the corporate world can find answers together with the advanced skills of the academic world. This paper fits exactly in this area. In particular, starting from a project by the company Code Architects, we will illustrate how it is possible to make forecasts on shipments with machine learning tools, which can support business decisions. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Forecasting

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The SATIN Infrared Detector Development Program and the Road to HELLSTAR 10

The SATIN Infrared Detector Development Program and the Road...

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conference on X-Ray, Optical, and Infrared Detectors for Astronomy X

作者： Figer, Donald F. Gallagher, Justin P. Buntic, Lazar Getty, Jonathan Lauxtermann, Stefan Rochester Inst Technol Ctr Detectors 74 Lomb Mem Dr Rochester NY 14623 USA Raytheon Vis Syst 75 Coromar Dr Goleta CA 93117 USA Sensor Creat Inc 5251 Verdugo WaySuite 1 Camarillo CA 93012 USA

ISBN: (纸本)9781510653641;9781510653634

We describe progress developing infrared detectors with HgCdTe grown on silicon substrates using Molecular Beam Epitaxial growth. The project is a collaboration between the RIT Center for Detectors and Raytheon Vision systems (RVS). NASA and NSF jointly funded the program, known as SATIN (Short-wave infrared advanced Technologies and Instrumentation program funded by NASA and NSF). We present detector characterization results for detectors made in the final lot of devices made by RVS. A full suite of characterization results, including for dark current, read noise, spectral response, persistence, linearity, full well, and crosstalk probability, are presented. The performance satisfies requirements for astronomy imaging applications. We plan to use the design to make HELLSTAR (HgCdTe Extremely Large Layout sensor Technology for Astrophysics Research), a 4Kx6K infrared detector with the highest number of pixels ever made for infrared astronomy.

关键词： sensors HgCdTe infrared detectors observational astronomy

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Poster: Three-dimensional Beamforming Defectoscope in industrial applications 25

Poster: Three-dimensional Beamforming Defectoscope in indust...

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Proceedings of the 23rd ACM conference on Embedded Networked sensor systems

作者： Barbara Stefaniak Michał Gołąbek Dariusz Wójcik Tomasz Rymarczyk Research and Development Center Netrix S.A. Lublin Poland University of Economics and Innovation Lublin Poland

ISBN: (纸本)9798400714795

This paper presents the development of an advanced non-invasive inspection system utilizing beamforming technology, specifically designed for detecting and characterizing defects across various materials. The device employs sophisticated algorithms to enhance both the precision and resolution of non-invasive examinations. Additionally, the system incorporates 3D reconstruction capabilities, providing improved visualization of detected anomalies. A comparative analysis with current market solutions further validates the superior diagnostic performance and potential applications of this innovative technology in sectors such as aerospace engineering, construction, and manufacturing, where accurate defect detection is paramount.

关键词： defectoscope

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Concept of Active Wireless sensor Network in Checkability Aspect 11

Concept of Active Wireless Sensor Network in Checkability As...

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11th IEEE International conference on Intelligent Data Acquisition and advanced Computing systems - Technology and applications (IDAACS)

作者： Drozd, Oleksandr Sachenko, Anatoliy Kochan, Volodymyr Drozd, Myroslav Dobrowolski, Maciej Su, Jun Odessa Polytech State Univ Ave Shevchenko 1 UA-65044 Odessa Ukraine West Ukrainian Natl Univ Peremoga Sq 3 UA-46020 Ternopol Ukraine Kazimierz Pulaski Univ Technol & Iuman Radom Ul Malczewskiego 29 PL-26600 Radom Poland Hubei Univ Technol Sch Comp Sci Wuhan Peoples R China

ISBN: (纸本)9781665426053

This paper focuses on the development of the concept of an active wireless sensor network (WSN) as a basis for improving the checkability of high-risk facilities in post-accident monitoring. The use of a drone system as WSN nodes provides a mobility network, the advantages of which are analyzed from the standpoint of improving the controllability and observability of the object in difficult post-accident conditions. The possibilities of renewing the resources of the mobile WSN, quick adaptation to the realities of training and reconfiguration as factors of ensuring high checkability of post-emergency objects are investigated. An analogy is drawn in the rating of checkability for digital circuits in critical systems and post-accident checkability of increased risk objects. The possibilities of active WSN, provided by its mobility, are analyzed.

关键词： wireless sensor network high-risk facility post-accident monitoring drone system controllability observability checkability renewing the resources

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Directional Curvature and Temperature sensor Based on Side-Polished Fiber Interferometer

Directional Curvature and Temperature Sensor Based on Side-P...

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advanced Telecommunication and Networking Technologies (ATNT), IEEE International conference on

作者： Siti Mahfuza Saimon Salem Aboubaker Salem Mohammed Asrul Izam Azmi Mohd Rashidi Salim Nurul Ashikin Daud Muhammad Yusof Mohd Noor Faculty of Electrical Engineering Universiti Teknologi Malaysia Johor Bahru Malaysia

ISBN: (数字)9798350353501

ISBN: (纸本)9798350353518

A dual-parameter sensor for directional bending and temperature sensing based on side-polished multimode fiber is proposed. In this scheme, a side-polished multimode fiber is spliced between two sections of coreless fiber to form a Mach-Zehnder interferometer. The side-polished structure induces distinct phase changes when the fiber is bent from different directions. The side-polished fiber exhibits wavelength responses of $3.252 \text{nm}/\mathrm{m}^{-1}$ and $-1.146 \text{nm}/\mathrm{m}^{-1}$ in $0^\circ$ and $180^{\circ}$ bending, respectively. This same structure is further demonstrated for high-sensitivity temperature sensing by coating it with Polydimethylsiloxane (PDMS). The PDMS-coated sensor shows an improved sensitivity of - $-107.9 \text{pm}/^{\circ}\mathrm{C}$ compared to the uncoated sensor which attain sensitivity of 55.7 $\text{pm}/^{\circ}\mathrm{C}$ . The results of this study demonstrate the sensor's potential for use in multi-parameter sensing applications, including medical wearable devices, soft robotics, and health monitoring of civil and mechanical engineering structures.

关键词： Temperature sensors Optical fiber sensors Sensitivity Optical fiber networks Bending Soft robotics Robot sensing systems sensors Wearable devices Monitoring

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Impact-Induced Frequency Up-Conversion Vibration Energy Harvester Based On Metal-Substrate Piezoelectric Thick Film

Impact-Induced Frequency Up-Conversion Vibration Energy Harv...

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Micro and Nanotechnology for Power Generation and Energy Conversion applications (PowerMEMS)

作者： Kaijun Lin Manjuan Huang Xiaowei Feng Zhenming Li Wei Liu Huicong Liu School of Mechanical and Electrical Engineering Jiangsu Provincial Key Laboratory of Advanced Robotics Soochow University Suzhou CHINA Energy Storage and Electrotechnics Department China Electric Power Research Institute Limited Company Beijing CHINA

ISBN: (数字)9798350380200

ISBN: (纸本)9798350380217

This paper presents an impact-induced frequency up-conversion piezoelectric energy harvester (FUC-PEH) to improve low-frequency output performance. The FUC-PEH includes a high-frequency piezoelectric cantilever (HFPC) with resonant frequency of 210 Hz and a low-frequency S-shaped stainless-steel cantilever (LFSC) with resonant frequency of 30 Hz. The HFPC is manufactured using MEMS metal-substrate lead zirconate titanate (PZT) thick film technology. The peak open-circuit voltage of FUC-PEH reaches 54.6 V over a drive frequency range of 10 to 60 Hz, which is $80 \%$ higher than that of a single HFPC in resonant state. It is expected to replace primary batteries and used as the power source for wireless sensor nodes. In addition, the low-frequency I-shaped stainless-steel cantilever (LFC-I), II-shaped cantilever (LFC-II) and iii-shaped cantilever (LFC-iii) are fabricated to explore the influence of the stiffness of low-frequency cantilever, the size of proof mass and the gap distance on the output performance of FUC-PEH.

关键词： Wireless communication Vibrations Wireless sensor networks Resonant frequency Voltage Bandwidth Thick films Resonance Lead zirconate titanate Testing

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Comparison of Commercial Pedometer applications: A Rigorous Approach

Comparison of Commercial Pedometer Applications: A Rigorous ...

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International conference on Smart Computing (SMARTCOMP)

作者： Alessio Terzi Federico Montori Lorenzo Gigli Luca Bedogni Marco Di Felice Luciano Bononi Department of Computer Science and Engineering University of Bologna Italy Advanced Research Center in Electronic Systems (ARCES) University of Bologna Italy Department of Physics Informatics and Mathematics University of Modena and Reggio Emilia Italy

ISBN: (数字)9798350349948

ISBN: (纸本)9798350349955

In recent years, there has been a growth in the development of numerous software algorithms dedicated to pedometers (or step counters). This surge has subsequently spurred the creation of various context-aware smartphone applications for sports, healthcare, and other fields. Most works that compare commercial offerings do not adopt a sound and rigorous method, as human testers are asked to stick to a defined set of constraints, and experiments are carried out within controlled environments. However, each application is still tested separately, with no guarantee that the conditions are really the same, plus these conditions cannot resemble the real environment where pedometers are going to be used. Our proposal features a software solution that records the sensor readings of human testers and inject the exact same sensor values into different pedometer applications to produce a sound result by using the same testing conditions. We implement our solution and perform with it a comparison study.

关键词： Magnetometers Magnetic separation Software algorithms Medical services Software Internet Proposals

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