{"title":"Optimization of Fingerprint Matching Localization Algorithm Based on RSSI in Wireless Sensor Network","authors":"Jiahao Xia;Xiu You;Haowei Cui;Yuhang Xin;Xueting Yin","doi":"10.1109/JSEN.2025.3598063","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3598063","url":null,"abstract":"Wireless sensor networks (WSNs) are a crucial component of modern information technology and are widely used in applications such as environmental monitoring, smart homes, and healthcare. Node localization technology is fundamental to the operation of these applications. Because traditional received signal strength indicator (RSSI) fingerprint matching localization algorithms face significant challenges in practical applications, such as low positioning accuracy and high computational complexity, this article proposes an optimized method for RSSI-based fingerprint matching localization in WSNs, which enhances effectiveness and expands application scope. First, Kalman filtering is applied to preprocess RSSI values, reducing noise interference. Second, the RSSI distance model is used to construct fingerprint node circles, forming a fingerprint database and lessening the data required for matching. Finally, dynamic time warping (DTW) distance measures the similarity between positioning points and fingerprint data nodes, significantly enhancing the accuracy and precision of the matching process. In addition, the optimized algorithm also supports collaborative localization between multiple agents, so as to achieve real-time tracking and positioning of objects in space. The simulation and experimental results indicate that the algorithm delivers remarkable performance in 2-D and 3-D localization, with a 93% improvement in positioning accuracy and a nearly tenfold boost in computational efficiency.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"35524-35533"},"PeriodicalIF":4.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multiscale Fusion Adversarial Domain Adaptation: A Cross-Domain Fault Diagnosis Method Based on Lightweight Model","authors":"Binkai Zou;Qitong Chen;Liang Chen;Changqing Shen","doi":"10.1109/JSEN.2025.3597913","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3597913","url":null,"abstract":"In recent years, deep learning has achieved significant progress in cross-domain fault diagnosis. Currently, most existing models still rely on large-scale labeled data and complex architectures, limiting their practical deployment in industrial applications. To overcome these limitations, this study aims to develop a lightweight method capable of effectively mitigating the impact of cross-domain feature distribution discrepancies, thereby enhancing model generalization and applicability under complex working conditions. First, a multiscale fusion adversarial domain adaptation (MFADA) approach is proposed. It improves interdomain feature alignment by integrating local structural features and high-level semantic information from both the source and target domains. Second, a lightweight feature extraction module is designed by combining pointwise (PW) convolution, depthwise (DW) convolution, and max pooling (MaxPool). This structure achieves strong feature extraction capability with minimal parameters, significantly improving computational efficiency. The proposed method is validated on current signals from industrial robots and vibration signals from bearings under various complex operating conditions. Experimental results demonstrate that MFADA achieves excellent performance on multiple transfer tasks. It reaches a maximum diagnostic accuracy of 99.17%, while maintaining a compact model size and low computational cost, demonstrating excellent performance.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 19","pages":"37512-37521"},"PeriodicalIF":4.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mariam El Gharbi;Jamal Abounasr;Raúl Fernández-García;Ignacio Gil
{"title":"A Smart Belt With Embroidered Antenna-Based Sensor for Real-Time Respiratory Monitoring","authors":"Mariam El Gharbi;Jamal Abounasr;Raúl Fernández-García;Ignacio Gil","doi":"10.1109/JSEN.2025.3594530","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3594530","url":null,"abstract":"Wearable technology has increased interest in monitoring vital signs in various medical fields, especially breathing monitoring. However, existing methods to track breathing patterns face challenges, including a lack of user comfort, robustness, system reliability, and data processing issues. Therefore, it is crucial to develop user-friendly and reliable wireless methods to overcome these challenges. In this article, we present a new wireless communication platform for real-time breathing monitoring. The platform consists of a wearable stretching belt with an embroidered loop antenna-based sensor connected to a compact Bluetooth transmitter, with dimensions of 17.145 × 11.303 mm2, placed on the abdomen. The proposed antenna-based sensor was designed to transmit data over wireless networks operating at a 2.4-GHz frequency. Its sensing mechanism involves detecting a received signal strength indicator (RSSI) wirelessly transmitted by the antenna sensor, which is responsive to strain. The experimental results were conducted to track different breathing patterns from a male volunteer. The system was compared with a Biopac MP36, and the obtained results showed a strong correlation with the measured values. The proposed system demonstrates the ability to detect various breathing patterns, including eupnea, hypopnea, hyperpnea, and Biot’s respiration. Furthermore, its accuracy in detecting these breathing patterns highlights its potential for clinical applications, such as monitoring respiratory health in patients with sleep disorders or chronic respiratory conditions.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 19","pages":"37327-37338"},"PeriodicalIF":4.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11126937","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145204555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hui Jiang;Jinyu Tang;Ziyi Gong;Yufei Han;Yujiao Gao;Jiayu Li
{"title":"Comparison of Annular Surface Dielectric Barrier Discharge Characteristics Under AC and Nanosecond Pulsed Excitation","authors":"Hui Jiang;Jinyu Tang;Ziyi Gong;Yufei Han;Yujiao Gao;Jiayu Li","doi":"10.1109/TPS.2025.3597132","DOIUrl":"https://doi.org/10.1109/TPS.2025.3597132","url":null,"abstract":"To explore the discharge characteristics of annular surface dielectric barrier discharge (SDBD) and guide the optimization of plasma excitation sources, this study presents a comparative analysis of SDBD behavior driven by a high-frequency, high-voltage alternating current (ac) power supply and a nanosecond pulsed power supply. The voltage–current waveforms and discharge images were employed to systematically investigate the differences in discharge initiation, spatial morphology, and temporal evolution under the two excitation modes. The results show that nanosecond-pulsed SDBD exhibits reverse discharge during the voltage fall phase, whereas ac-driven SDBD exhibits an earlier discharge onset due to cumulative surface charge effects. As the voltage amplitude increases, both excitation modes produce more streamer channels and broader discharge areas. However, their discharge distribution modes differ significantly. Annular SDBD under ac excitation produces filamentary discharge localized along the edge of the high-voltage electrode, whereas under nanosecond pulse excitation, the separated-channel discharge channels are produced. These differences are attributed to variations in voltage rise time and surface charge dynamics. Nanosecond pulses create a stronger transient electric field, expanding discharge coverage. In ac-SDBD, residual electrons near the high-voltage electrode promote early breakdown in the next cycle. In contrast, reverse discharge under pulsed excitation reduces residual positive charge and delays the next discharge. Nevertheless, the high conductivity of established channels promotes repeated breakdown in the same location, maintaining separated-channel distribution.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 9","pages":"2168-2176"},"PeriodicalIF":1.5,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Samuel Jackson;Saiful Khan;Nathan Cummings;James Hodson;Shaun de Witt;Stanislas Pamela;Rob Akers;Jeyan Thiyagalingam;MAST Team
{"title":"An Open Data Service for Supporting Research in Machine Learning on Tokamak Data","authors":"Samuel Jackson;Saiful Khan;Nathan Cummings;James Hodson;Shaun de Witt;Stanislas Pamela;Rob Akers;Jeyan Thiyagalingam;MAST Team","doi":"10.1109/TPS.2025.3583419","DOIUrl":"https://doi.org/10.1109/TPS.2025.3583419","url":null,"abstract":"The increasing complexity and volume of plasma fusion experimental data, coupled with the growing adoption of machine learning in fusion research, necessitate advanced and efficient data management solutions. We propose an open data service for fusion experiments operated by the UKAEA, designed to address the evolving needs of machine-learning-driven fusion research. Our system provides a framework to organize MAST, MAST upgrade (MAST-U), and Joint European Torus (JET) experimental data in accordance with findability, accessibility, interoperability, and reuse (FAIR) principles, using distributed object storage for scalability and a relational database for efficient metadata indexing. In addition, it offers simplified abstractions through an application programming interface (API), facilitating seamless data access and integration with data analysis and machine learning workflows. Performance evaluation of metrics such as data load time and throughput, across varying numbers of parallel workers, demonstrates the data pipeline’s optimization for efficient machine learning application development. Our solution significantly enhances support for data-driven research and machine learning applications in fusion by laying the groundwork for open, FAIR-compliant fusion data, which enables cross-machine analysis, prompts international collaboration, and potentially accelerates advancements in fusion energy research.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 9","pages":"2440-2449"},"PeriodicalIF":1.5,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11128905","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Harmonic Current Suppression of AMB Rotor System Based on Improved Multiple SOGI-FLL","authors":"Fayuan Xie;Jiming Zou;Shaobin Li;Lijun Xiao;Yongxiang Xu;Pengcheng Zhu","doi":"10.1109/JSEN.2025.3597315","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3597315","url":null,"abstract":"In active magnetic bearing (AMB) systems, harmonic currents induced by mass unbalance and sensor runout cause the system to generate harmonic vibrations. Conventional harmonic current suppression methods depend highly on accurate rotational speed information, which limits their application in scenarios without rotational speed sensors. To address this problem, this article first analyses the main sources of harmonic vibration and then proposes an improved multiple second-order generalized integral frequency-locked loop (IMSOGI-FLL) algorithm. The algorithm achieves adaptive estimation of the rotational frequency by using the frequency of the fundamental component in the disturbance signal and effectively suppresses the harmonic currents generated by the mass unbalance and sensor beating. In addition, in order to ensure the stability of the system in the operating range, this article designs a simple phase compensator without parameter switching, which can improve the stability range of the system in the low-frequency band. The experimental results show that the proposed algorithm can not only accurately estimate the rotational frequency but also significantly eliminate the harmonic currents caused by mass unbalance and sensor runout, which provides an effective solution for harmonic current suppression in the case of no speed sensor.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"34529-34536"},"PeriodicalIF":4.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dezhi Zheng;Zonglin Li;Jie Yuan;Chun Hu;Zhen Wang;Peng Peng
{"title":"High-Sensitivity Eddy Current Probe Design via Multipath ResNet and Bayesian Optimization","authors":"Dezhi Zheng;Zonglin Li;Jie Yuan;Chun Hu;Zhen Wang;Peng Peng","doi":"10.1109/JSEN.2025.3597294","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3597294","url":null,"abstract":"Eddy current testing (ECT) is a vital technique for pipeline defect detection, where the sensitivity of detection is heavily influenced by probe design parameters. However, traditional optimization methods for probe parameters often suffer from limitations such as neglecting interactions among parameters, ignoring potential optimal combinations within the step size, and being quite time-consuming. To address these challenges, an advanced optimization framework is proposed, which combines a neural network with Bayesian optimization (BO). A probe configuration consisting of two coaxially arranged coils connected via a bridge circuit is investigated. A multipath residual neural network is developed as a surrogate model to evaluate the design parameters, including coil inner diameter, number of turns, height, and spacing. Bayesian optimization then uses this model as the objective function to identify optimal parameter combinations. Simulation and experimental results validate that the surrogate model demonstrates enhanced prediction accuracy, and the optimization process achieves superior performance with fewer iterations. Compared with the comparison groups, the optimized probes exhibit higher sensitivity for defects in the 1–4-mm depth range. These prove the effectiveness of the proposed method for efficient and high-performance ECT probe design, indicating its significant application potential.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"34803-34812"},"PeriodicalIF":4.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lu-Xiang Zhao;Yong-Ping Zheng;Xin-Yuan Chen;Han-Shu Yang;Run-Hong Lei;Rui-Xue Wang
{"title":"Research Progress and Development Trends of Cold Atmospheric Plasma Technology in Radiotherapy","authors":"Lu-Xiang Zhao;Yong-Ping Zheng;Xin-Yuan Chen;Han-Shu Yang;Run-Hong Lei;Rui-Xue Wang","doi":"10.1109/TPS.2025.3596808","DOIUrl":"https://doi.org/10.1109/TPS.2025.3596808","url":null,"abstract":"Cold atmospheric plasma (CAP) has become a promising technology for enhancing the efficacy of radiotherapy (RT) in cancer treatment and repairing the subsequent side effects. This review summarizes the current research on the combination of CAP and RT, focusing on its radiosensitizing effect, the ability to repair radiation-induced injury, and the challenges and solutions in the clinical application and promotion of this direction. Reactive oxygen and nitrogen species (RONS) produced by CAP increase the sensitivity of tumor cells to radiation and reduce the damage of radiation to normal cells, thus improving the effects and safety of RT. In addition, CAP has been proven to promote the repair of radiation-induced skin damage, especially radiation dermatitis (RDs), a common side effect of RT that currently lacks effective treatment options. By alleviating RD and enhancing tissue regeneration, CAP provides a new treatment method for managing the adverse reactions of RT. Although it has broad prospects, some challenges hinder the wide application of CAP in clinical settings, including limited penetration depth, the lack of standardized dosimetry, and the intricate nature of its underlying molecular mechanisms. In addition, the standardization of CAP equipment, precise parameter control strategies, and long-term safety issues require further investigation. This review emphasizes the necessity of continuous exploration to improve the role of CAP in RT and provides insights for the development of more effective and safer cancer treatment methods.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 9","pages":"2477-2490"},"PeriodicalIF":1.5,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research on Eddy Current-Based Detection Method for Ultimate Tensile Strength of Pipelines","authors":"Xinjiu Jin;Lijian Yang","doi":"10.1109/JSEN.2025.3597683","DOIUrl":"https://doi.org/10.1109/JSEN.2025.3597683","url":null,"abstract":"The accurate assessment of the ultimate tensile strength (UTS) of pipeline materials is crucial for determining the maximum allowable operating pressure of pipelines and predicting potential locations of structural failure. To evaluate the UTS of in-service pipelines, this study investigated the relationship between the UTS of steel and its magnetic permeability based on dislocation dynamics and density functional theory. An eddy current-based detection method for assessing the UTS of pipelines was proposed. The effectiveness of the proposed method was verified through experiments, and the impact of temperature variations and surface corrosion on the detection outcomes was also investigated. The experimental results demonstrate that when the detection frequency is set within the range of 5–50 kHz, the eddy current testing results of Q235 and Q345 steels exhibit an approximately linear distribution on the impedance plane, corresponding to the ascending order of their UTS. The optimal detection frequency for both steel types is identified to be between 10 and 50 kHz. Within this frequency range, both the amplitude and the phase angle of the eddy current impedance display an approximately linear correlation with the UTS of the materials. Under linear regression analysis, the Pearson correlation coefficient between impedance amplitude and UTS exceeds 0.75, while that between phase angle and UTS remains above 0.7. This method exhibits less susceptibility to temperature variations and surface corrosion on steel, making it suitable for complex working conditions, including internal inspection of pipelines.","PeriodicalId":447,"journal":{"name":"IEEE Sensors Journal","volume":"25 18","pages":"35201-35211"},"PeriodicalIF":4.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shuying Wang;Pengpeng Ren;Yewei Zhang;Mingzhao Yang;Runsheng Wang;Zhigang Ji
{"title":"Towards Design-Technology Co-Optimization for Nanosheet Transistors With Backside Contact","authors":"Shuying Wang;Pengpeng Ren;Yewei Zhang;Mingzhao Yang;Runsheng Wang;Zhigang Ji","doi":"10.1109/TNANO.2025.3599842","DOIUrl":"https://doi.org/10.1109/TNANO.2025.3599842","url":null,"abstract":"Nanosheet transistors has emerged as a potential structure of semiconductor technology. The introduction of Wrapped-Around Contact (WAC) and Backside Power Delivery Network, particularly the Backside Contact (BSC) in nanosheet transistors, has effectively promotes further scaling. This work contributes to design technology co-optimization (DTCO) for BSC technology by comprehensively exploring the impact of structural innovation, process parameters and dimension parameters. Through electro-thermal coupling simulations, we reveal the significant advantages of Backside Contact with WAC structure in terms of electrothermal properties compared to conventional structures. We also investigate the impact of contact resistivity, contact thermal resistivity, sheet width and number on device and circuit performance. This work provides an inspiration to optimize electro-thermal performance under advanced nodes.","PeriodicalId":449,"journal":{"name":"IEEE Transactions on Nanotechnology","volume":"24 ","pages":"439-444"},"PeriodicalIF":2.1,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}