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Research on Robust Measurement Method of Heart Rate Using Remote Photoplethysmography Based on Adversarial Learning Network with High and Low Frequency Features

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IEEE Transactions on Circuits and systems for Video Technology 2025年第6期35卷 5208-5222页

作者： Zhai, Dezhao Chen, Wei Ding, Yinghao Yu, Ming Li, Qinwei Wu, Hang Tianjin University of Technology Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical Engineering Tianjin300384 China National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin University of Technology China People's Liberation Army Systems Engineering Institute Academy of Military Sciences Tianjin300161 China Civil Aviation University of China Tianjin Key Laboratory for Advanced Signal Processing Tianjin300300 China Nankai University School of Artificial Intelligence Tianjin300381 China

Remote Photoplethysmography (rPPG) is a non-contact method for measuring heart rate (HR) through facial video, breaking the constraints of contact measurements and offering broad application prospects. However, in real monitoring scenarios, the distance of subjects and facial illumination often vary. This leads to degradation of rPPG signals due to changes in facial resolution and light intensity. This paper presents the High and Low Frequency Feature Adversarial Learning Network (HLFF-AL), which utilizes feature space interpolation and composite feature capture to perform multi-band global and local signal extraction. By adopting an adversarial learning strategy, it enhances the capability to capture semantic information of rPPG under varying resolutions and lighting, bridging the differences in rPPG signal generation due to resolution changes. While maintaining accuracy in HR measuring, the robustness of the network is improved to achieve robust measurement of HR via rPPG. Even under high-resolution conditions, the Mean Absolute Error (MAE) for the three public datasets - unchanging lighting (COHFACE, UBFC-rPPG) and varying lighting (BUAA-MIHR) - reached 1.10 bpm, 1.64 bpm, and 4.41 bpm, respectively, with a mere 0.29 bpm difference in MAE between high and low resolutions on the BUAA-MIHR dataset. This demonstrates that HLFF-AL can predict more robust rPPG signals in various resolutions and lighting scenarios, achieving competitive results compared to state-of-the-art methods. © 1991-2012 IEEE.

关键词： Heart

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Placement of Electromagnets for Edge-supported Maglev systems: Fundamental Consideration on Tilting Angle of Electromagnets

Placement of Electromagnets for Edge-supported Maglev System...

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2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023

作者： Baba, Shotaro Endo, Ayato Kuroda, Jumpei Uchino, Daigo Ogawa, Kazuki Ikeda, Keigo Kato, Taro Narita, Takayoshi Kato, Hideaki Fukuoka Institute of Technology Department of Electrical Engineering Fukuoka811-0295 Japan Course of Mechanical Engineering Tokai University Hiratsuka259-1292 Japan Course of Science and Technology Tokai University Hiratsuka259-1292 Japan Hokkaido University of Science Department of Mechanical Engineering Sapporo006-8585 Japan Tokyo University of Technology Department of Mechanical Engineering Hachioji192-0982 Japan Tokai University Department of Mechanical Systems Engineering Hiratsuka259-1292 Japan

ISBN: (纸本)9798350338362

In the manufacturing process of thin steel plates, the surface quality deteriorates due to contact with rollers. Therefore, it is necessary to convey thin steel plates without contact by magnetic levitation. However, when thin steel plates are levitated by electromagnetic force, deflection of the plate occurs, and stable levitation of the steel plate is difficult. Therefore, an edge support type magnetic levitation method was proposed for stable levitation. However, this method has the disadvantage of low suspension force, although sufficient attractive force can be obtained. In this report, the method that electromagnets are tilted was proposed. It is possible to levitate by low steady current using the method. Moreover, the horizontal and vertical attractive forces when the electromagnets are tilted were investigated by electromagnetic field analysis. © 2023 IEEE.

关键词： Electromagnets

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Graph-based robot optimal path planning with bio-inspired algorithms

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Biomimetic Intelligence & Robotics 2023年第3期3卷 75-90页

作者： Tingjun Lei Timothy Sellers Chaomin Luo Daniel W.Carruth Zhuming Bi Department of Electrical and Computer Engineering Mississippi State UniversityMississippi State 39762USA Center for Advanced Vehicular Systems Mississippi State UniversityMississippi State 39762USA Department of Civil and Mechanical Engineering Purdue University Fort WayneFort Wayne 46805USA

Recently,bio-inspired algorithms have been increasingly explored for autonomous robot path planning on grid-based ***,these approaches endure performance degradation as problem complexity increases,often resulting in lengthy search times to find an optimal *** limitation is particularly critical for real-world applications like autonomous off-road vehicles,where highquality path computation is essential for energy *** address these challenges,this paper proposes a new graph-based optimal path planning approach that leverages a sort of bio-inspired algorithm,improved seagull optimization algorithm(iSOA)for rapid path planning of autonomous robots.A modified Douglas–Peucker(mDP)algorithm is developed to approximate irregular obstacles as polygonal obstacles based on the environment image in rough *** resulting mDPderived graph is then modeled using a Maklink graph *** applying the iSOA approach,the trajectory of an autonomous robot in the workspace is ***,a Bezier-curve-based smoothing approach is developed to generate safer and smoother trajectories while adhering to curvature *** proposed model is validated through simulated experiments undertaken in various real-world settings,and its performance is compared with state-of-the-art *** experimental results demonstrate that the proposed model outperforms existing approaches in terms of time cost and path length.

关键词： Autonomous robot Path planning Bio-inspired algorithm Graph-based model Improved seagull optimization algorithm(iSOA)

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Improvement Technology of Driving-environment Using Two-Degree-of-Freedom Active Seat Suspension: Design of Ride Comfort by Vibration Control Using Voice Coil Motor 27

Improvement Technology of Driving-environment Using Two-Degr...

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27th International Conference on electrical Machines and systems, ICEMS 2024

作者： Okamura, Eiichi Endo, Ayato Kuroda, Jumpei Uchino, Daigo Ogawa, Kazuki Ikeda, Keigo Kato, Taro Kato, Hideaki Narita, Takayoshi Course of Electrical Engineering Fukuoka Institute of Technology Fukuoka Japan Fukuoka Institute of Technology Department of Electrical Engineering Fukuoka Japan Tokai University Kanagawa Hiratsuka Japan National Institute of Technology Numazu College Department of Mechanical Engineering Shizuoka Numazu Japan Aichi University of Technology Department of Electronic Robot Engineering Aichi Gamagori Japan Hokkaido University of Science Department of Mechanical Engineering Hokkaido Sapporo Japan Tokyo University of Technology Department of Mechanical Engineering Hachioji Tokyo Japan Tokai University Department of Mechanical Systems Engineering Kanagawa Hiratsuka Japan

ISBN: (纸本)9784886864406

One of the issues with ultra-compact mobility vehicle is the deterioration of passenger comfort due to vibrations generated in the vertical and pitch directions. Therefore, improvement of ride comfort using active seat suspension, which is mounted on the seat to control vibrations transmitted to the passenger, has been considered. Regarding passenger ride comfort, vertical and pitch vibration are perceived differently for the same frequency. Therefore, improvement in ride comfort can be expected by designing the vibration characteristics generated in the two directions separately. In this study, the design of vibration characteristics using a controller with feedback control was considered. As a result, it was clarified that while the frequency response can be designed by setting the feedback gain, the control performance deteriorates depending on the feedback gain to be set. © 2024 The Institute of electrical Engineers of Japan.

关键词： Feedback control

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Fabric Defect Detection System using YOLO 14

Fabric Defect Detection System using YOLO

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14th IIAI International Congress on advanced Applied Informatics, IIAI-AAI 2023

作者： Kawaguchi, Masashi Morimitsu, Yuta Watanabe, Ryusei Ikuta, Chihiro Ishii, Naohiro Umeno, Masayoshi National Institute of Technology Suzuka College Department of Electrical and Electronic Engineering Suzuka Japan Advanced Institute of Industrial Technology Information Systems Architecture Course Tokyo Japan Chubu University Department of Electronic Engineering Kasugai Japan

ISBN: (纸本)9798350324228

In textile processing companies, after purchasing fabric, dyeing, and other treatments, such as surface finishing are carried out before shipping. Defect detection technology is one of the most important issues in this field. Because if we ship a defective fabric without noticing the defect, it will cause damage to the delivery destination. Previously, defect detection of fabric has been performed using methods such as CNN. However, conventional methods such as general multilayer neural networks require two separate processing stages: object detection and identification. Therefore, there is a problem that sufficient real-time performance cannot be guaranteed in the inspection process on an actual manufacturing line. Therefore, in this study, we construct a fabric defect detection system using YOLO which is capable of real-time object detection. In the future, we aim to realize the automation of textile defect detection systems by the construction of an image recognition system using machine learning. It is expected that this will result from reduced detection errors by the human eye, improve detection accuracy, and reduce labor costs. © 2023 IEEE.

关键词： Machine learning

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Comparison of Two-step and One-step Methods in Constant Stress Accelerated Degradation Tests 14

Comparison of Two-step and One-step Methods in Constant Stre...

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14th International Conference on Reliability, Maintainability and Safety, ICRMS 2023

作者： Chen, Siyi Cao, Zhisheng Xie, Min Hu, Qingpei Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing China Beijing Mechanical and Electrical Engineering Design Department Beijing China Department of Advanced Design and Systems Engineering City University of Hong Kong Hong Kong

ISBN: (纸本)9798350329988

Our aim is to predict the failure lifetime of a product under normal operating stress conditions in constant stress accelerated degradation tests by analyzing degradation data obtained at high-stress levels. Two commonly used methods for analyzing degradation data are the one-step and two-step methods. The one-step method involves maximizing the likelihood based on degradation data to estimate model parameters, enabling subsequent inference. On the other hand, the two-step method calculates pseudo-lifetimes for each sample and performs accelerated lifetime testing analysis. Advancements in hardware and software computing have improved the computational efficiency of the one-step method, and its performance is now comparable to that of the widely employed two-step method in the industry. This comparative analysis allows us to evaluate the performance and advantages of the one-step method in handling degradation data. In this study, the linear degradation case was considered specifically, and a simulation of the one-step and two-step methods was conducted under degradation path models in constant stress accelerated degradation testing. We used the relative error in the estimation of the mean time to failure (MTTF) as the basis for comparison. Altogether, the one-step method demonstrates higher accuracy and shorter computation time in assessing the MTTF of the product compared to the two-step method, which assumes pseudo-lifetimes and follows three distinct lifetime distributions. This highlights the superiority of the one-step method in handling degradation data, offering the industry a more reliable approach for analysis. © 2023 IEEE.

关键词： Time-to-failure

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Simulation of Vibration Characteristics of Magnetically Levitated Steel Plate Under Disturbance Condition 27

Simulation of Vibration Characteristics of Magnetically Levi...

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27th International Conference on electrical Machines and systems, ICEMS 2024

作者： Ogawa, Kazuki Uchida, Yamato Kobayashi, Ikkei Kuroda, Jumpei Ikeda, Keigo Kato, Taro Endo, Ayato Narita, Takayoshi Kato, Hideaki Aichi University of Technology Department of Electronic Robot Engineering Gamagori Japan Tokai University Course of Mechanical Engineering Hiratsuka Japan Tokai University Hiratsuka Japan Research of Institute of Science and Technology Tokai University Hiratsuka Japan Hokkaido University of Science Department of Mechanical Engineering Sapporo Japan Tokyo University of Technology Department of Mechanical Engineering Hachioji Tokyo Japan Fukuoka Institute of Technology Department of Electrical Engineering Fukuoka Japan Tokai University Department of Mechanical Systems Engineering Hiratsuka Japan

ISBN: (纸本)9784886864406

When proposing a thin steel sheet transfer system using magnetic levitation, elastic vibration of steel sheets during magnetic levitation becomes a problem. To obtain sufficient levitation stability to transport the steel plate, it is necessary to suppress the vibration of steel plate. For this purpose, it is necessary to understand the vibration of steel plate. Since it is difficult to experimentally determine the vibration of the entire steel plate, we propose a magnetic levitation simulation that can investigate the vibration of the steel plate during magnetic levitation by numerical analysis. In this paper, the vibration characteristics of levitated steel plate will be clarified by comparing simulations with experimental results of magnetic levitation under disturbing condition © 2024 The Institute of electrical Engineers of Japan.

关键词： Numerical analysis

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Noninvasive fluid bubble detection based on capacitive micromachined ultrasonic transducers

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Microsystems & Nanoengineering 2023年第1期9卷 115-126页

作者： Jiawei Yuan Zhikang Li Qi Ma Jie Li Zixuan Li Yihe Zhao Shaohui Qin Xuan Shi Libo Zhao Ping Yang Guoxi Luo Xiaozhang Wang Kwok Siong Teh Zhuangde Jiang State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologiesXi’an Jiaotong University(Yantai)Research Institute for Intelligent Sensing Technology and SystemsXi’an Jiaotong University710049Xi’anChina School of Mechanical Engineering Xi’an Jiaotong University710049Xi’anChina Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing 265503YantaiChina School of Mechanical and Electrical Engineering Shaanxi University of Science and TechnologyXi’an710049Xi’anChina School of Engineering San Francisco State UniversitySan FranciscoCA94132USA

Ultrasonic fluid bubble detection is important in industrial controls,aerospace systems and clinical medicine because it can prevent fatal mechanical failures and threats to ***,current ultrasonic technologies for bubble detection are based on conventional bulk PZT-based transducers,which suffer from large size,high power consumption and poor integration with ICs and thus are unable to implement real-time and long-term monitoring in tight physical spaces,such as in extracorporeal membrane oxygenation(ECMO)systems and dialysis machines or hydraulic systems in *** work highlights the prospect of capacitive micromachined ultrasonic transducers(CMUTs)in the aforementioned application situations based on the mechanism of received voltage variation caused by bubble-induced acoustic energy *** corresponding theories are established and well validated using finite element *** fluid bubbles inside a pipe with a diameter as small as 8 mm are successfully measured using our fabricated CMUT chips with a resonant frequency of 1.1 *** received voltage variation increases significantly with increasing bubble radii in the range of 0.5–2.5 *** studies show that other factors,such as bubble positions,flow velocities,fluid medium types,pipe thicknesses and diameters,have negligible effects on fluid bubble measurement,demonstrating the feasibility and robustness of the CMUT-based ultrasonic bubble detection technique.

关键词： bubble negligible mentioned

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Bio-Inspired Intelligence-Based Multiagent Navigation with Safety-Aware Considerations

IEEE Transactions on Artificial Intelligence

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IEEE Transactions on Artificial Intelligence 2024年第6期5卷 2946-2961页

作者： Lei, Tingjun Luo, Chaomin Yang, Simon X. Carruth, Daniel W. Bi, Zhuming Mississippi State University Department of Electrical and Computer Engineering MS39762 United States Laboratory School of Engineering GuelphONN1G 2W1 Canada Mississippi State University Center for Advanced Vehicular Systems MS39762 United States Purdue University Fort Wayne Department of Civil and Mechanical Engineering Fort WayneIN46805 United States

Multiple autonomous vehicles (MAVs) enhance efficiency and task execution compared to a single vehicle. Real-world applications necessitate MAVs to safely navigate in dynamic formation along planned trajectories, while sensing, mapping, and avoiding obstacles. Addressing the need for trajectory adaptation amidst real-world scenarios, a safety-aware bio-inspired framework is proposed in this article. Our approach employs a chaotic gravitational search algorithm (CGSA) for global trajectory generation in a predefined formation. A quadtree-driven variable resolution (QVR) algorithm using monocular cameras provides occupancy grid maps (OGMs) at different resolutions. A formation control with target tracking minimizes a potential function for MAVs to follow the CGSA trajectory. Additionally, a bio-inspired neural network (BNN) local navigator coupled with dynamic moving windows (DMW) advances obstacle avoidance and refines safe trajectories using QVR and OGMs. Simulation and comparative studies validate the framework's robustness and effectiveness for MAVs. © 2020 IEEE.

关键词： Trajectories

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Forced air cooled Heat sink design for Sic 1kV and 3.3kV power module using Multi-objective optimization 11

Forced air cooled Heat sink design for Sic 1kV and 3.3kV pow...

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11th International Conference on Power Electronics - ECCE Asia, ICPE 2023-ECCE Asia

作者： Siddaiah, Rounak Ordonez, Juan Cuzner, Robert M. University of Wisconsin Milwaukee Sustainable Electrical Energy Systems Department of Electrical Engineering MilwaukeeWI United States Florida State University FAMU-FSU College of Engineerng Center for Advanced Power Systems Energy and Sustainability Center Department of Mechanical Engineering TallahasseeFL United States

ISBN: (纸本)9788957083505

Power electronics converters are making significant progress in making power conversion and distribution systems more efficient, reliable, power dense, and so on, partly by improving thermal management. This advancement in power electronics introduces new challenges for mitigating high power losses from power switches such as IGBTs, MOSFETs, etc. Air-cooled heat sinks are less expensive, lighter, and easier to install than liquid-cooled heat sinks, making them an excellent choice for high-risk applications such as shipboard applications. For this application, increasing the converter's power density is also an important consideration when choosing or designing the thermal management solution;the optimal design of the heat sink must be pursued to evaluate the benefits of the power throughput of the converter. This paper employs a genetic algorithm (NSGA-II) that performs multi-objective optimization of a forced air-cooled fin heat sink. The Pareto optimal front is shown, which maximizes power loss mitigation capability while minimizing heat sink volume and mass. The heat sink design is also validated using Finite Element Analysis (FEA). © 2023 The Korean Institute of Power Electronics.

关键词： Heat sinks

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