Movement Recognition through Inductive Wireless Links: Investigation of Different Fabrication Techniques

Article Engineering, Electrical & Electronic

Simple Enhancement of Series-Series-Compensated Inductive Wireless Power Transfer Links Operating With Load-Independent Voltage Output at Fixed Frequency to Attain Zero Inverter Phase Angle

Alon Kuperman

Summary: By operating the power transfer links in the capacitive region and adding a shunt inductor across the AC-side terminals of the inverter or rectifier, the inverter zero-phase angle can be achieved, resulting in a minimized VA rating.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2023)

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Article Engineering, Electrical & Electronic

Robust Abnormal Human-Posture Recognition Using OpenPose and Multiview Cross-Information

Mingyang Xu et al.

Summary: In this study, a robust multiperspective abnormal human-posture recognition approach is proposed based on multiview cross-information and confidence measurement. Human skeletal data extracted by OpenPose are used as input for the YOLOv5s system to detect abnormal postures such as falls and bumps. Simulation results based on the NTU-RGB+D public dataset and the Pytorch framework demonstrate high accuracy of our proposed method.

IEEE SENSORS JOURNAL (2023)

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Article Engineering, Biomedical

Assessment of a Multi-Sensor FBG-Based Wearable System in Sitting Postures Recognition and Respiratory Rate Evaluation of Office Workers

Martina Zaltieri et al.

Summary: Due to incorrect sitting posture, upper body musculoskeletal disorders (UBMDs) are widespread among sedentary workers. Monitoring sitting behaviors and respiratory rate (RR) can help minimize UBMDs' occurrence and assess the workers' state of health. A flexible wearable system based on fiber Bragg grating (FBG) technology was proposed to recognize sitting postures and estimate RR, showing good performances in posture recognition and agreement with benchmark in RR estimation. The wearable system could provide support for understanding posture attitudes and gathering RR information to depict users' state of health.

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING (2023)

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Article Engineering, Electrical & Electronic

Improvement in Power Transmission Efficiency of Wireless Power Transfer System Using Superconducting Intermediate Coil

N. Oshimoto et al.

Summary: We have shown that the power transmission efficiency (PTE) of a wireless power transfer (WPT) system for long-distance power transmission can be improved by using a high-quality-factor intermediate (IM) coil with a high temperature superconductor (HTS) wire. The HTS IM coil, positioned between the Cu transmitting (Tx) and receiving (Rx) coils, is made of a double-sided HTS coated conductor (CC) wire. Compared to a system with a Cu IM coil, the WPT system with the HTS IM coil achieved a significantly higher PTE of 49.7% compared to 17.5% when the distance between the Tx and Rx coils was 160 cm.

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY (2023)

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Article Engineering, Electrical & Electronic

Investigation of HTS Coil Structure Robustness Against Misalignment Between Coils in a Wireless Power Transmission System for Railway Vehicles

Ryota Inoue et al.

Summary: This paper investigates a wireless power transmission (WPT) system using high-temperature superconducting (HTS) coils. The non-circular HTS coil structure with high misalignment tolerance is found to have improved transmission characteristics. The power transmission efficiency and receiving power can be optimized by adjusting the spacing and length of the non-circular coils.

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY (2023)

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Article Engineering, Electrical & Electronic

Angle-Insensitive Human Motion and Posture Recognition Based on 4D Imaging Radar and Deep Learning Classifiers

Yubin Zhao et al.

Summary: Given the aging population worldwide, there is an increasing urgency for technologies that can recognize human activities in home environments. This study proposes a hierarchical processing and classification pipeline that fully utilizes the information from millimeter-wave 4D imaging radars, using point cloud and spectrogram as data representations. The results show good performance of the proposed pipeline, and investigate the impact of key parameters.

IEEE SENSORS JOURNAL (2022)

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Review Multidisciplinary Sciences

An overview of Human Action Recognition in sports based on Computer Vision

Kristina Host et al.

Summary: Human Action Recognition (HAR) is a challenging task used in sports to detect and recognize players' actions. This research focuses on various methods performed on publicly available datasets and proposes a novel systematization of actions based on complexity and level of performance and interactions.

HELIYON (2022)

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Proceedings Paper Biophysics

Wireless Resonant Energy Link for Joint Flexion Monitoring: Experimental Investigation by Using a NanoVNA

Nizar Brahim et al.

Summary: This paper experimentally investigates the use of a wireless resonant energy link for joint flexion monitoring. Configurations using two and four coils are analyzed through a compact and very low-cost setup suitable for the implementation of a wearable monitoring system.

2022 IEEE MTT-S INTERNATIONAL MICROWAVE BIOMEDICAL CONFERENCE (IMBIOC) (2022)

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Article Engineering, Electrical & Electronic

Towards a Virtual Keyboard Scheme Based on Wearing One Motion Sensor Ring on Each Hand

Chao Lian et al.

Summary: This paper presents an improved ring-type virtual keyboard scheme that achieves impressive performance by optimizing layout and feature selection, improving keystroke recognition accuracy and speed. This scheme has advantages in portability, small volume, and lower cost, making it a promising human-computer interface method.

IEEE SENSORS JOURNAL (2021)

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Article Chemistry, Analytical

An Efficient 3D Human Pose Retrieval and Reconstruction from 2D Image-Based Landmarks

Hashim Yasin et al.

Summary: This research proposes an efficient architecture for retrieving and reconstructing 3D human pose from 2D landmarks extracted from various types of images. By normalizing 3D poses and utilizing virtual cameras, the system efficiently transforms 3D pose space to 2D pose space and resolves the 2D-3D cross-domain retrieval task. The proposed system shows competitive and convincing results when compared to other state-of-the-art methods.

SENSORS (2021)

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Article Engineering, Electrical & Electronic

EMI in a Cardiac Implantable Electronic Device (CIED) by the Wireless Powering of a Left Ventricular Assist Device (LVAD)

Tommaso Campi et al.

Summary: This article discusses the electromagnetic interference generated by a wireless power transfer system in a left ventricular assisted device implanted in a patient with a cardiac implantable electronic device. Results show that the proposed WPT system does not interfere with other CIEDs, tested in accordance with the ISO 14117 standard.

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY (2021)

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Article Computer Science, Information Systems

MARS: Mixed Virtual and Real Wearable Sensors for Human Activity Recognition With Multidomain Deep Learning Model

Ling Pei et al.

Summary: The article discusses using wearable inertial measurement units for human activity recognition with a focus on deep learning methods. It proposes building a large dataset and introducing a multi-domain deep learning framework to address technical issues. Experimental results demonstrate the efficiency and effectiveness of the proposed method.

IEEE INTERNET OF THINGS JOURNAL (2021)

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Article Engineering, Electrical & Electronic

Multisensor-Based 3D Gesture Recognition for a Decision-Making Training System

Tse-Yu Pan et al.

Summary: This article introduces a gesture recognition method using multiple IMU sensors, which is applied to basketball referee gestures. The proposed recognition model shows outstanding performance and successfully develops a decision-making training system based on the method.

IEEE SENSORS JOURNAL (2021)

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Article Engineering, Electrical & Electronic