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CLEO: Science and Innovations, S and I 2022

作者： Fang, Zhuoran Chen, Rui Zhang, Jieying Xu, Peipeng Majumdar, Arka Department of Electrical and Computer Engineering University of Washington SeattleWA98195 United States Department of Physics University of Washington SeattleWA98195 United States Faculty of Electrical Engineering and Computer Science Ningbo University Ningbo315211 China Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province Ningbo315211 China

ISBN: (纸本)9781557528209

We demonstrate a broadband low-loss nonvolatile 2×2 silicon directional coupler switch based on phase-change material Sb2Se3. The switch has a low insertion loss of ~0.5 dB, a compact footprint of ~41 µm, and less than -10 dB crosstalk across ~33 nm bandwidth around 1550nm. © Optica Publishing Group 2022, © 2022 The Author(s)

关键词： Antimony compounds

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Keeping Drivers Alert: A Solution for Monitoring Driver Attention in Assisted-Driving Vehicles

Keeping Drivers Alert: A Solution for Monitoring Driver Atte...

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Proceedings of the International Convention MIPRO

作者： Robert Jutreša Peter Peer Žiga Emeršič Jihun Kim Faculty of Computer and Information Science/Computer Vision Laboratory Ljubljana Slovenia School of Electronic and Electrical Engineering Kyungpook National University Daegu South Korea

The advent of the new industrial revolution has led to a surge in the number of self-driving and assisted-driving vehicles on the roads. Although this development enhances the overall quality of life, it also poses new challenges and risks. One such difficulty is the need for driver attention in the event of system errors. To overcome this issue, a driver monitoring system is necessary to ensure that the driver remains focused and can take control if necessary, while also sending alerts in case of driver distraction. To address this challenge, we propose a method that employs a convolutional neural network based on the ResNet architecture. This system can recognize selected types of driver distractions in captured infrared images. We experimented with different depths of the ResNet architecture to determine the most optimal results. The best model achieved an accuracy rate of 94% in detecting various forms of driver distraction.

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Advanced Ultrasonic Diagnostic Technology Towards Green Hydrogen Energy Systems

Advanced Ultrasonic Diagnostic Technology Towards Green Hydr...

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2023 IEEE International Ultrasonics Symposium, IUS 2023

作者： Dou, Zehua Tropf, Laura Hoster, Harry Schmidt, Hagen Czarske, Juergen Weik, David Technische Universität Dresden Faculty of Electrical and Computer Engineering Laboratory of Measurement and Sensor System Technique Dresden01069 Germany Hydrogen and Fuel Centre Zbt GmbH Duisburg47057 Germany Leibniz Institute for Solid State and Materials Research Dresden01069 Germany

ISBN: (纸本)9798350346459

Green Hydrogen energy is promising alternative of fossil fuels under the global warming crisis. However, the efficiency and lifespans of state-of-the-art low temperature water electrolysis cells (LTWEs) are highly influenced by their two-phase mass transport behaviors, e.g., gas bubble evolutions ranging from micro/nanoscopic range to the macroscopic. Therefore, developing diagnostic/monitoring systems for studying these phenomena are crucial to promote the development of green Hydrogen energy systems. In this work, we focus on the macroscale, and we propose a Scholte wave based non-destructive monitoring scheme of gas bubbles in flow channels of LTWEs. In short, Scholte waves are able to propagate along the interface of water and flow channels incorporated in a bipolar plate, and they are in parallel excited and received only along each straight section of flow channels to avoid complicated reflections of excitation waves at flow fields' boundaries. These excited waves are partially scattered by appearances of gas bubbles in flow channels, and the evolution of gas bubbles can be deduced from acquired echo signals. The proposed method is experimentally demonstrated using an ex-situ setup with a single straight flow channel of 115 mm length on a 400 μm thick Aluminum sheet. The Scholte waves were generated by mode conversions of Lamb waves on a fluid coupled plate-like structure, using angle beam transducers. We show that gas bubbles can be accurately localized by the time-of-flight of acquired echo signals within an error of 200 μm. The proposed method opens new horizons on diagnosis of flow regimes and monitoring of gas bubble evolutions towards more efficient and reliable industrial hydrogen production. © 2023 IEEE.

关键词： Temperature

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Impact and Mitigation of Electromagnetic Interference Between HVTL and Pipelines

Impact and Mitigation of Electromagnetic Interference Betwee...

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IEEE Southeastcon

作者： Hossam Hussein Abd El-Latif S. Ahmed Sabry Mousa El-Sayed M. El-Refaie Osama A. Mohammed Department of Electrical and Computer Engineering Energy Systems Research Laboratory Florida International University Miami USA Department of Electrical Power and Machines Engineering Faculty of Engineering Helwan University Cairo Egypt

High-voltage transmission lines transmit bulk power from one place to another and may pass through densely populated areas or forests, causing an economic challenge. While following the right-of-way (ROW) rules, high-voltage transmission lines are forced to share the same corridors with others, like metallic gas pipelines. In this regard, the electromagnetic fields from high-voltage transmission lines will affect neighboring pipelines using inductive, conductive, and capacitive effects. As a result, there will be an induced voltage across the metallic pipes, which will have negative repercussions. An example of this includes corrosion in the pipeline itself and those in direct contact with the pipeline via touch and step voltages. This paper studies the electromagnetic interference for the El-Fayoum-Dahshour gas pipeline, which shares the same route for 72 km with three overhead transmission lines, two of which are 500 kV and the third is 220 kV. Several study cases were done to show the impact of soil resistivity variation on the pipeline-induced voltage. The results conclude that the LG fault is the worst-case scenario. Moreover, mitigating the total induced voltage to the recommended safe limits was achieved by applying the polarization cell method.

关键词： Power transmission lines Pipelines Electromagnetic interference Voltage High-voltage techniques Forestry Soil

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Synthetic Data for Face Recognition: Current State and Future Prospects

arXiv

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arXiv 2023年

作者： Boutros, Fadi Struc, Vitomir Fierrez, Julian Damer, Naser Fraunhofer Institute for Computer Graphics Research IGD Darmstadt Germany Faculty of Electrical Engineering University of Ljubljana Ljubljana Slovenia School of Engineering Universidad Autonoma de Madrid Madrid Spain Department of Computer Science TU Darmstadt Darmstadt Germany

Over the past years, deep learning capabilities and the availability of large-scale training datasets advanced rapidly, leading to breakthroughs in face recognition accuracy. However, these technologies are foreseen to face a major challenge in the next years due to the legal and ethical concerns about using authentic biometric data in AI model training and evaluation along with increasingly utilizing data-hungry state-of-the-art deep learning models. With the recent advances in deep generative models and their success in generating realistic and high-resolution synthetic image data, privacy-friendly synthetic data has been recently proposed as an alternative to privacy-sensitive authentic data to overcome the challenges of using authentic data in face recognition development. This work aims at providing a clear and structured picture of the use-cases taxonomy of synthetic face data in face recognition along with the recent emerging advances of face recognition models developed on the bases of synthetic data. We also discuss the challenges facing the use of synthetic data in face recognition development and several future prospects of synthetic data in the domain of face recognition. Copyright © 2023, The Authors. All rights reserved.

关键词： Face recognition

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Spectrally-Efficient Beamforming Design for STAR-RIS-Aided URLLC NOMA Systems

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IEEE Transactions on Communications 2024年第7期72卷 4414-4431页

作者： Katwe, Mayur Vitthalrao Deshpande, Rasika Singh, Keshav Pan, Cunhua Ghare, Pradnya H. Duong, Trung Q. National Institute of Technology Raipur Department of Electronics and Communication Engineering Chattisgarh Raipur492010 India Institute of Communications Engineering National Sun Yat-sen University Kaohsiung804201 Taiwan Southeast University National Mobile Communications Research Laboratory Nanjing210096 China Visvesvaraya National Institute of Technology Department of Electronics and Communication Engineering Nagpur440027 India Memorial University of Newfoundland Faculty of Engineering and Applied Science St. John'sNLA1B 3X5 Canada Queen's University Belfast School of Electronics Electrical Engineering and Computer Science BelfastBT7 1NN United Kingdom

Next-generation wireless applications are expected to enable extended ultra-reliable low-latency communication (URLLC) to support high data rates along with ultra-reliability and low-latency features beyond the capabilities of existing core services. There is a need to transition from conventional architectures to more efficient and robust multiple-access schemes to meet these consolidated requirements in resource-constrained systems. This study explores the utilization of simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) in non-orthogonal multiple access (NOMA) systems to enable spectrally efficient URLLC, even under the imperfect channel state information. In particular, we focus on maximizing spectral efficiency by jointly designing robust beamforming at the base station and STAR-RIS subject to given URLLC requirements. Due to the non-convexity of the formulated problem, we propose an alternating optimization framework that obtains sub-optimal solutions to the problems of beamforming design at the BS and STAR-RIS, respectively by exploiting S-procedure and successive convex approximation. Simulation results confirm that the STAR-RIS-NOMA system can significantly boost the spectral efficiency by 10-15% compared to conventional reflecting-only RIS while guaranteeing the strict URLLC requirements. Specifically, among all the possible modes of STAR-RIS, the time-splitting mode provides better spectral efficiency than other modes owing to its better interference management. 0090-6778 © 2024 IEEE.

关键词： Beamforming

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Literature Review of Circulating Current of Parallel Voltage Source Converters

Literature Review of Circulating Current of Parallel Voltage...

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PELS Students and Young Professionals Symposium (SYPS), IEEE

作者： Haoyu Zhang Man-Chung Wong Department of Electrical and Computer Engineering Faculty of Science and Technology State Key Laboratory of Internet of Things for Smart City University of Macau Macau China Department of Electrical Computer Engineering Faculty of Science and Technology State Key Laboratory of Internet of Things for Smart City University of Macau Macao China

To increase the power density of voltage source converters (VSC) usually use parallel structures. However, parallel VSC will easily introduce circulating current, which can cause a power efficiency decline. This paper gives a review of the circulating current and the solutions of it. Through the analysis of the principle of circulating current generation and the detail of the solutions, this paper gives an overview of the current research stage of circulating current. The technology can be divided into hardware solutions and software solutions are then analyzed and evaluated.

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Stress Detection Using PPG Signal and Combined Deep CNN-MLP Network

arXiv

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arXiv 2024年

作者： Hasanpoor, Yasin Motaman, Koorosh Tarvirdizadeh, Bahram Alipour, Khalil Ghamari, Mohammad Laboratory Department of Mechatronics Engineering Faculty of New Sciences and Technologies University of Tehran Tehran Tehran Iran Department of Electrical and Computer Engineering Kettering University FlintMI United States

Stress has become a fact in people's lives. It has a significant effect on the function of body systems and many key systems of the body including respiratory, cardiovascular, and even reproductive systems are impacted by stress. It can be very helpful to detect stress episodes in early steps of its appearance to avoid damages it can cause to body systems. Using physiological signals can be useful for stress detection as they reflect very important information about the human body. PPG signal due to its advantages is one of the mostly used signal in this field. In this research work, we take advantage of PPG signals to detect stress events. The PPG signals used in this work are collected from one of the newest publicly available datasets named as UBFC-Phys and a model is developed by using CNN-MLP deep learning algorithm. The results obtained from the proposed model indicate that stress can be detected with an accuracy of approximately 82 percent. © 2024, CC BY-NC-ND.

关键词： Photoplethysmography

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Research on hybrid flow-shop scheduling based on improved genetic algorithm 18

Research on hybrid flow-shop scheduling based on improved ge...

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18th IEEE Conference on Industrial Electronics and Applications, ICIEA 2023

作者： Chen, Haopeng Fang, Zaojun Zhong, Caiming Ningbo University Ningbo Institute of Materials & Technology Engineering Chinese & Academy of Sciences Faculty of Electrical Engineering and Computer Science Ningbo China Chinese & Academy of Sciences Zhejiang Key Laboratory of Robotics and Intelligent Manufacturing Equipment Technology Ningbo Institute of Materials & Technology Engineering Ningbo China Ningbo University College of Science & Technology Ningbo China

ISBN: (纸本)9798350312201

Aiming at the scheduling problem in the production process of hybrid flow-shop, a hybrid flow-shop scheduling model with the objective of minimizing the makespan is established, and a neighborhood search adaptive genetic algorithm (NSAGA) based on heuristic decoding strategy is proposed. An encoding strategy based on the first stage processing sequence and a decoding strategy based on a heuristic rule are used to guide the algorithm to find the optimal solution quickly. In order to speed up the convergence of the algorithm, the elitism strategy is introduced into the genetic operation, and adaptive crossover and mutation strategy based on sigmoid function is designed. In order to enhance the local search capability of the algorithm, a neighborhood search strategy is designed. Finally, the effectiveness and superiority of NSAGA for solving the hybrid flow-shop scheduling problem (HFSP) with different scales are verified by simulation experiments. © 2023 IEEE.

关键词： Genetic algorithms

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Position control of humanoid thorax based on fuzzy PID controller 18

Position control of humanoid thorax based on fuzzy PID contr...

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18th IEEE Conference on Industrial Electronics and Applications, ICIEA 2023

作者： Fang, Siyuan Fang, Zaojun Peng, Chengbin Zhang, Chi Yang, Guiling Ningbo University Ningbo Institute of Materials & Technology Engineering Chinese & Academy of Sciences Faculty of Electrical Engineering and Computer Science Ningbo China Chinese & Academy of Sciences Zhejiang Key Laboratory of Robotics and Intelligent Manufacturing Equipment Technology Ningbo Institute of Materials & Technology Engineering Ningbo China Ningbo University College of Science & Technology Ningbo China

ISBN: (纸本)9798350312201

Respiration is the most notable vital sign of humans so that it is usually employed to diagnose disease in medicine. Recently, a solution is proposed to decrease the cost of healthcare using flexible stretchable sensors to monitor respiration. However, the sensor is difficult to test millions of cycles on a real human body, which is essential to ensure accuracy and repeatability in practical applications. In this paper, a new humanoid thoracic cavity that mimics rib expansion/constriction is exhibited. Then, a position control based on Fuzzy PID method is presented. Focused on the scenario, the performance between the common PID method and the Fuzzy PID method is investigated. Firstly, the position control based on the Fuzzy PID method is constructed by utilizing position output error and its rate. Then, three gain parameters of PID are adjusted online according to the established fuzzy rules. Finally, the above two methods are compared by simulation and experiments. In a simulation, the fuzzy PID control algorithm improves the response speed, shortens the adjustment time, and meets the requirements of the system for high response and high accuracy. Besides, an experiment is carried out on a humanoid chest prototype. the results show that the control period of the presented method is shortened by about 50% v.s. the traditional PID under the step signal input. Tracking marked points using a laser tracker, the maximum tracking error is 0.0523 mm, the minimum error is 0.0450 mm, and the average error is 0.0473mm. Therefore, the presented method is validated to improve the performance of the humanoid chest. © 2023 IEEE.

关键词： Position control

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