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System reliability and Safety Engineering (SrSE), International Conference on

作者： Kai Kang Yi Yi Liu Li Shou Zhang Qing Bi Li Kui He Yuan Yuan Zhang Information Construction and Operation Center State Grid Shanghai Electric Power Company Information and Communication Company Shanghai China R&D Center Shanghai Xinneng Information Technology Development Company Shanghai China Business Analysis Department Shanghai Zimu Information Technology Company Shanghai China

The purpose of this paper is to introduce the research related to the business center monitoring system based on the emergency response system of the business center of the power grid company. The business monitoring of the business center determines to a certain extent the basis of the stable and continuous operation of the business center. Through the research on the business indicator monitoring system of the business platform emergency system, it can provide sufficient support for the business development of the power grid company. It can also provide assistance for the operation of various businesses and play a certain role in guiding. In this paper, through the overall architecture design and key technology research on the corresponding business indicator monitoring system of the business center, a complete set of business indicator monitoring system specifications based on the emergency system of the business center of the grid company is obtained. It will provide the basis and guidance for the actual construction of the subsequent system, reduce the system construction cycle and the uncertainty of the construction, as well as help the business center flexibly and quickly adapt to the changes of the business development. Meanwhile, it will also help the business center adapt flexibly and quickly to business development changes.

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Carbon compounds, internal stress and hydrogen permeability in carbon-doped TiZrN coatings by laser ablation

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Ceramics International 2025年

作者： Kim, Seonghoon Hong, Eunpyo Choi, Young-kyu Lee, Seahoon Lee, Youngjae Choi, Yongsup Lee, Heesoo Extreme Materials Research Institute Korea Institute of Materials Science Changwon51508 Korea Republic of Mechanical & Material Technology Center Korea Testing Laboratory Jinju52852 Korea Republic of Research Institute of Sustainable Development Technology Low-Carbon Emission Control R&D Department Korea Institute of Industrial Technology Cheonan31056 Korea Republic of Institute of Plasma Technology Korea Institute of Fusion Energy Gunsan54004 Korea Republic of School of Materials Science and Engineering Pusan National University Busan46241 Korea Republic of

Internal stress has emerged as a crucial factor in determining the lifetime of hydrogen permeation barrier coatings, as it influences the hydrogen isotope diffusion and crack propagation. Here, we fabricated carbon-doped TiZrN coatings under different laser outputs, and investigated the changes in hydrogen permeability due to carbon compound formation and internal stress induced by laser shock peening. Based on ToF-SIMS, the carbon penetration depth in the coating was confirmed to be up to 500 nm, depending on the laser output. Using XPS and raman analysis, it was confirmed that doped carbon substituted nitrogen sites in TiZrN, forming TiC and ZrC, and increasing carbide content from 4.1 % to 7.4 %. Notably, as the laser output increased from 30 % to 40 %, the sp2/sp3 ratio rose from 1.33 to 2.67, and the Id/IG ratio increased from 0.81 to 1.33, indicating the formation of an amorphous carbon-embedded (Ti, Zr)(C, N) structure. This was complemented by the transformation of the TEM-SAEd pattern from dot patterns to ring patterns. The internal stress in carbon-doped TiZrN coatings increased from 4.323 GPa before carburization to a maximum of 5.620 GPa. The increase in residual compressive stress led to a reduction in hydrogen permeability by up to 69 %, 57 %, and 24 % at 573 K, 673 K, and 773 K, respectively. This study advances the understanding of carbon compound formation and internal stress changes in TiZrN coatings under different laser output. It demonstrates that the formation of residual compressive stress due to laser shock peening significantly influences the hydrogen permeability by inhibiting hydrogen isotope diffusion and crack propagation within the coating. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Laser ablation

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Basic Study of Communication System in Seawater Using Magnetic Field Coupler and Wavelet OFdM

Basic Study of Communication System in Seawater Using Magnet...

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Asia-Pacific Conference on Microwave

作者： ryosuke Hasaba Kazuhiro Eguchi Toshiyuki Wakisaka Hiroshi Sato Jiro Hirokawa Miyuki Hirose Tohlu Matsushima Yuki Fukumoto Department of Electrical and Electronic Engineering Tokyo Institute of Technology Tokyo Japan R&D Division Panasonic Connect Co. Ltd. Tokyo Japan Department of Electrical and Electronic Engineering Kyushu Institute of Technology Tokyo Japan Development Center Panasonic System Networks R&D Lab. Co. Tokyo Japan

ISBN: (数字)9784902339567

ISBN: (纸本)9781665451086

Since seawater has high attenuation of electromagnetic waves, the transmitting and receiving antennas are magnetically coupled using a coil with a diameter of 80 cm. The antenna is submerged in saltwater, and insertion loss is measured using a VNA. The communication speeds experiment of the UdP and TCP protocols is conducted when the distance between the transmitter and receiver antenna is changed.

关键词： Antenna measurements Microwave measurement Magnetic field measurement Protocols OFdM Transmitting antennas receiving antennas

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The impact of the heat leakage through air gap on thermoelectric generator applied in engine waste heat recovery

Green Energy and Resources

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Green Energy and resources 2024年第3期2卷

作者： Zhang, Ning Wang, Jiawei Li, Yuhuai Lan, Jianglin Lan, Song Powertrain Technology R&D Center Guangzhou Automobile Group Research and Development Center 510000 China School of Automotive and Transportation Engineering Hefei University of Technology 230009 China James Watt School of Engineering University of Glasgow Glasgow G12 8QQ United Kingdom

Efforts to enhance the performance of thermoelectric generators (TEGs) in engine waste heat recovery have primarily focused on directly increasing energy conversion efficiency. Heat leakage can occur in many parts of a TEG. It is needed to develop a model to help researchers study this phenomenon and propose measures to reduce heat leakage. To address this gap, this study establishes and validates a computational fluid dynamic (CFd) and finite element (FE) coupled model based on a TEG prototype and its engine test bench. Unlike other models, this approach captures the intricate dynamics of heat propagation from the TEG via air gaps, encompassing conduction, convection, and radiation. Comprehensive analysis reveals that heat leakage accounts for approximately 11% of TEG power output loss. Ignoring the impact of heat leakage can lead to an overestimation of TEG power output. Key areas of heat leakage are identified, and numerical factors influencing this phenomenon are explored. Vertical TEG placement and optimal spacing between thermoelectric modules emerge as effective strategies for mitigating the impact of heat leakage on power output. Leveraging these insights, strategic thermoelectric module placement, vertical TEG orientation, and the application of thermal insulation materials to the heat exchanger are proposed as measures to enhance TEG power output by approximately 5%. The experimental and numerical results underscore the feasibility of optimizing TEGs from the perspective of heat leakage, a crucial aspect previously overlooked. These findings provide valuable insights for future TEG optimization endeavors, highlighting the importance of addressing heat leakage to maximize TEG performance. © 2024 The Authors

关键词： Engine waste heat recovery Heat leakage Optimization Thermoelectric generator

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Image-Based Condition Monitoring of Air-Spinning Machines with deep Neural Networks

Image-Based Condition Monitoring of Air-Spinning Machines wi...

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IEEE Sensors Applications Symposium, SAS

作者： Kai Jansen Irida Shallari Safer Mourad Patrick Werheit Sebastian Bader Department of Computer and Electrical Engineering Mid Sweden University Sundsvall Sweden Saurer Machine Data Analytics Saurer Spinning Solutions GmbH & Co. KG Übach-Palenberg Germany Saurer Business Development Office & R&D Sensor BU SPIN Saurer Intelligent Technology AG Arbon Switzerland

ISBN: (数字)9798350369250

ISBN: (纸本)9798350369267

Industrial condition monitoring has benefited significantly from developments in machine learning and deep learning. However, textile machines, to a large extent, still use simple sensor systems, requiring additional manual quality inspections. This paper focuses on applying deep neural networks (dNNs) in image-based condition monitoring of air-spinning machines. It specifically focuses on the spinning pressure parameter, which is strongly related to the quality of the produced yarn. The study aims to develop a method to detect structural defects in yarns and assign them to specific machine conditions. dNNs are used to analyze images of yarns generated at different spinning pressures within the spinning box to create a rich dataset for training deep learning models. The study then evaluates the effectiveness of the dNN-based approach in detecting and classifying structural defects in yarns and determining the corresponding machine conditions. The results demonstrate that the developed model can distinguish good yarn from bad yarn, which is used to analyze the proportion of good yarn segments in a longer yarn section. A decreasing proportion with decreasing spinning pressure can thus be used to identify trends in degrading machine conditions. The outcomes of the presented research could potentially help textile enterprises improve the quality and efficiency of their yarn manufacturing processes.

关键词： Condition monitoring deep learning Training Analytical models Artificial neural networks Sensor systems Spinning

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High-voltage converter with 2 kV SiC MOSFETs for electric fast charging stations

High-voltage converter with 2 kV SiC MOSFETs for electric fa...

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European Conference on Power Electronics and Applications

作者： david derix Christian Blaum Wolfram Kruschel daniel Heer Andreas Hensel Jonas Pfeiffer Ainhoa Puyadena Mier Juan Mena Carrillo Jürgen Thoma Christoph drexler Michael Schmidhuber Peter Friedrichs Power Electronics and Grid Integration Fraunhofer Institute for Solar Energy Systems Freiburg Germany Advance R&D SUMIDA Components & Modules GmbH Germany Power Module Development Infineon Technologies AG Warstein Germany Technical Marketing Infineon Technologies AG Warstein Germany Business Excellence Infineon Technologies AG Munich Germany Technology Development Infineon Technologies AG Erlangen Germany

ISBN: (数字)9798350364446

ISBN: (纸本)9798350364453

In this project, the power electronic system technology for future high-performance charging systems along highways or large inner-city electric charging stations with several MVA system sizes with reduced material demand is presented. The concept is based on a dC bus with 1.5 kV and corresponding high efficient power electronics to connect the vehicles to the dC grid. This approach leads to a cost-efficient system. Key components are an electrically isolated dC converter based on 2 kV SiC power modules and an inductive transformer with switching frequencies up to 50 kHz and an output power of 175 kW.

关键词： road transportation MOSFET Silicon carbide Switching frequency Europe Multichip modules High-voltage techniques Transformers Power electronics Power generation

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Ag Ink-Jet Printed CPW with Micro-Surface Cavities: Effects of Cavity removal on rF Characteristics

Ag Ink-Jet Printed CPW with Micro-Surface Cavities: Effects ...

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SBMO/IEEE MTT-S International Conference on Microwave and Optoelectronics (IMOC)

作者： Sung-Min Sim Jun-Ho Yu Jung-Mu Kim Sang-Ho Lee RF&MS development DBHitek Eumseong-gun Republic of Korea Digital transformation R&D department Korea Institute of Industrial Technology Ansan-si Republic of Korea Department of Electronic Engineering Jeonbuk National University Jeonju-si Republic of Korea

This paper presents a study on the rF characteristics of CPW transmission lines with micro-surface cavities generated by Ag ink-jet printing. The cavities were formed by printing Ag ink on a substrate and then drying the ink. The size and number of cavities changed depending on the drying temperature. The rF characteristics of the transmission lines were measured using a vector network analyzer. The insertion loss at 3 GHz was measured to be 0.046 dB/mm at 30°C, 0.043 dB/mm at 65°C, and 0.039 dB/mm at 100°C. The results show that the presence of the cavities degrades the rF characteristics of the transmission lines, particularly at high frequencies.

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research on HrI Evaluation System and diver Safety Equipment

Research on HRI Evaluation System and Diver Safety Equipment

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OCEANS 2024 - Halifax, OCEANS 2024

作者： Lee, Ye Jun Kim, Min-Gyu Shin, Myung-Jun Park, Tae Sung Kim, Jinhyung Kim, Sunghun Lee, Kichoon Lee, Jihun Min, Jeongtack Research Center Pohang Korea Republic of Pusan National University Hospital Pusan National University School of Medicine Department of Rehabilitation Medicine Busan Korea Republic of Institute of Technology Pusan National University Hospital Department of Convergence Medical Busan Korea Republic of Technical Research Center RNWare Co. Ltd Daegu Korea Republic of Gleam-Systems System Development Division Daejeon Korea Republic of Gleam-Systems Modeling and Simulation Division Daejeon Korea Republic of Marine Leisure Equipment R&d Center Pohang Korea Republic of

ISBN: (纸本)9798331540081

Scuba diving is a common aquatic leisure sport that many individuals enjoy in the sea. With the increasing number of people participating, there is a corresponding rise in related incidents and accidents. Typically, such events are caused by inadequate user proficiency with equipment, sudden onset of physical symptoms, failure to respond to external obstacles, and equipment malfunctions. As interest in scuba diving grows, the development of diver safety equipment that enhances convenience and usability through the interaction between divers and equipment is crucial, not only to assist underwater activities but also to preemptively prevent accidents. This paper explores the analysis of divers' physiological conditions and diver equipment evaluation criteria. Building upon this, it proposes a HrI(Human-robot Interaction) evaluation system to facilitate the research and development of safety equipment for secure scuba diving operations. © 2024 IEEE.

关键词： Human robot interaction

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Novel Temporary Bonding Film Adapted to Xenon Flash Lamp de-bonding System for FOWLP Application

Novel Temporary Bonding Film Adapted to Xenon Flash Lamp De-...

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作者： Matsubara, Hiroaki Shibata, Tomoaki Akasu, Yuta Ogawa, Saeko Kuroda, Ayaka Sobue, Shogo Packaging Solution Center AIRBIC 3F 7-7 Shin-Kawasaki Saiwai-ku Kawasaki-shi Kanagawa212-0032 Japan Advanced Technology Research & Development Center 48 Wadai Ibaraki Tsukuba-shi300-4247 Japan Packaging Materials R&D Department 14 Goiminamikaigan Ichihara-shi Chiba290-8567 Japan

***@*** bonding film (TBF) is one of the key materials for assembly process of fan out wafer level package (FOWLP). In this paper, we have proposed a novel TBF and xenon flash lamp de-bonding system. The TBF was mainly composed of cross-linkable and low-polarity polymers to meet the various requirement for not only easy peeling-off after assembly but also stability against thermal and chemical environment exposed in FOWLP process. In order to evaluate applicability of the developed material, die-first/face up test wafer was assembled. As a result, it was found that the TBF has high stability and can be de-bonded by xenon light irradiation. In addition, the die shift through assembly process was within the estimated range. These results offer that the developed TBF is practically applicable for FOWLP assembly process. © 2022 IMAPS-International Microelectronics and Packaging Society. All rights reserved.

关键词： Chemical stability

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Etching dynamics of Geometrically Confined Silicon Nanostructure

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Microscopy and Microanalysis 2022年第S1期28卷 126-127页

作者： Koo, Kunmo Chang, Joon Ha Ji, Sanghyeon Choe, Jacob Shin, Seungmin Lee, Geun-Taek Kim, Tae-Hong Yuk, Jong Min Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology Daejeon Republic of Korea Advanced Core Equipment Engineering & Development P/J Semiconductor R&D Center Samsung Electronics Hwaseong Republic of Korea

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