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IEEE Canadian Journal of Electrical and Computer Engineering IEEE加拿大电子与计算机工程杂志
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-12-18 DOI: 10.1109/ICJECE.2024.3498395
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引用次数: 0
Intelligent Energy Management for Multistorey Building With Photovoltaic-Based Electric Vehicle Charging Infrastructure 基于光伏电动汽车充电基础设施的多层建筑智能能源管理
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-11-27 DOI: 10.1109/ICJECE.2024.3487893
M. Jajini;N. Shanmuga Vadivoo;Sivasankar Gangatharan
The usage of electric vehicles (EVs) has increased and it leads to additional demand along with existing residential demand and managing it becomes challenging. Further EV charging systems that function during the daytime in multistorey buildings expedite the peak loading. The main objective of this work is to minimize the operating cost of the system and conversion losses. In this work, the microgrid incorporated with a bidirectional converter plays a major role in dc-ac and ac-dc conversion. The photo voltaic (PV) sources support the system with sufficient dc power generation and batteries store the dc power and supply the load in case of insufficiency. By utilizing a genetic algorithm (GA) and appropriate energy management (EM) to charge EVs according to time-of-use tariff patterns, the impact of growing demand on the grid is greatly mitigated. To ease the burden on the grid during peak hours, the interruptible loads are shifted to off-peak times. Other challenges of EV charging such as energy saving, maximum peak demand, voltage instability, and high current drawing issues are rectified and well presented with existing topology. When compared to the standard scheme, the energy savings in the proposed topology are much increased, reaching 33.04%, while the cost reduction is 57.27%.
电动汽车(ev)的使用增加了,它导致了额外的需求以及现有的住宅需求,管理它变得具有挑战性。此外,白天在多层建筑中运行的电动汽车充电系统加快了高峰负荷。这项工作的主要目标是尽量减少系统的运行成本和转换损失。在这项工作中,微电网与双向变换器结合在一起,在dc-ac和ac-dc转换中起主要作用。光伏电源为系统提供充足的直流电,蓄电池存储直流电,在直流电不足时补充负载。通过利用遗传算法(GA)和适当的能源管理(EM)根据使用时间电价模式对电动汽车充电,大大减轻了需求增长对电网的影响。为了减轻电网在高峰时段的负荷,可中断负荷被转移到非高峰时段。电动汽车充电的其他挑战,如节能、最大峰值需求、电压不稳定和大电流消耗等问题,在现有的拓扑结构中得到了很好的解决。与标准方案相比,本文提出的拓扑节能效果显著,达到33.04%,成本降低57.27%。
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引用次数: 0
An Adaptive Edge Computing Infrastructure for Internet of Medical Things Applications 面向医疗物联网应用的自适应边缘计算基础设施
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-11-27 DOI: 10.1109/ICJECE.2024.3471652
Dang Van Anh;Abdellah Chehri;Chu Thi Minh Hue;Tran Duc Tan;Nguyen Minh Quy
The integration of cloud computing (CC) and Internet of Things (IoT) technologies in the healthcare industry has significantly boosted the importance of real-time remote patient monitoring. The Internet of Medical Things (IoMT) systems facilitate the seamless transfer of health records to data centers, allowing medical professionals and caregivers to analyze, process, and access them. This data is often stored in cloud-based systems. Nevertheless, the transmission of data and execution of computations in a cloud environment may lead to delays and affect the efficiency of real-time healthcare services. In addition, the use of edge computing (EC) layers has become prevalent in performing local data processing and storage to reduce service response times for IoMT applications. The main objective of this article is to develop an adaptive EC infrastructure for IoMT systems, with a specific emphasis on maintaining optimal performance for real-time health services. It also designs a model to predict the server resources required to meet service level agreements (SLAs) regarding response time. Simulation results demonstrate that EC significantly improves service response time for real-time IoMT applications. The proposed model can accurately and efficiently predict the computing resources required for medical data services to achieve SLAs under varying workload conditions.
云计算(CC)和物联网(IoT)技术在医疗保健行业的集成大大提高了实时远程患者监测的重要性。医疗物联网(IoMT)系统有助于将健康记录无缝传输到数据中心,使医疗专业人员和护理人员能够分析、处理和访问这些记录。这些数据通常存储在基于云的系统中。然而,在云环境中传输数据和执行计算可能会导致延迟,并影响实时医疗保健服务的效率。此外,边缘计算(EC)层的使用在执行本地数据处理和存储方面已经变得普遍,以减少IoMT应用程序的服务响应时间。本文的主要目标是为IoMT系统开发自适应EC基础设施,特别强调为实时医疗服务保持最佳性能。它还设计了一个模型来预测满足有关响应时间的服务水平协议(sla)所需的服务器资源。仿真结果表明,EC显著提高了实时IoMT应用的服务响应时间。该模型能够准确有效地预测医疗数据服务在不同工作负载条件下实现sla所需的计算资源。
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引用次数: 0
Design of Stubs in a Comb-Line Leaky-Wave Antenna for Minimizing Gain Variation at Broadside 最小宽频增益变化的梳线漏波天线短节设计
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-10-31 DOI: 10.1109/ICJECE.2024.3475878
Ayaz Ahmad;Shanu Kumar;Jayanta Mukherjee
In this work, the effect of a two-section stub for minimizing gain variation near broadside frequency in a comb-line leaky-wave antenna (LWA) is investigated. Mathematical design conditions for stubs are derived based on the matched input impedance requirement of the unit cell. Based on the derived conditions, two different stubs (Case-I and Case-II) are designed and placed in the middle of the host transmission line (50 Ω delay line) to make comb-line unit cells (UC#1, and UC#2). The open stopband (OSB) suppression is investigated by analyzing the input impedance and the leakage constant of the unit cells. Next, the variation in the gain of the LWAs (LWA#1, and LWA#2) with the proposed stubs is compared with a comb-line LWA with the conventional radiating stub (CRS). The gain variation in LWA#1 is only 0.7 dB as compared to the 2.5 dB gain variation for LWA using CRSs. Moreover, the gain is improved by 2 dB near the broadside for LWA#2 as compared to LWA using CRS. In the entire analysis, the broadside frequency is chosen near 10 GHz.
在这项工作中,研究了两段短段在梳线漏波天线(LWA)中减小宽频附近增益变化的作用。根据单元格的输入阻抗匹配要求,导出了短管的数学设计条件。根据导出的条件,设计了两个不同的存根(Case-I和Case-II),并将其放置在主机传输线(50 Ω延延线)的中间,形成梳线单元单元(uc# 1和uc# 2)。通过分析单元电池的输入阻抗和泄漏常数,研究了开阻带(OSB)的抑制。接下来,与具有传统辐射存根(CRS)的梳线LWA比较了具有所提出存根的LWA (lwa# 1和lwa# 2)的增益变化。与使用CRSs的LWA的2.5 dB增益变化相比,LWA#1的增益变化仅为0.7 dB。此外,与使用CRS的LWA相比,LWA#2的增益在宽边附近提高了2db。在整个分析中,宽带频率选择在10ghz附近。
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引用次数: 0
A Cutting-Edge Deer Hunting Optimized Converter Control (DHOCC) Based Dynamic Wireless IPT System for EV Charging Applications 基于猎鹿优化转换器控制(DHOCC)的电动汽车充电动态无线IPT系统
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-10-31 DOI: 10.1109/ICJECE.2024.3469390
N. Sivakumar;S. Charles Raja;Chelladurai Balasundar;M. Geethanjali
Coil alignment plays a vital role in wireless charging systems which affects the transmission power and resonance coupling efficiency in electric vehicle (EV) charging. Also, the cutting-edge controlling model is used to improve the converter operations in the wireless inductive power transfer (IPT) system for EV charging. This work proposes a deer hunting optimized converter control (DHOCC) algorithm for buck dc–dc converter to effectively step down the desired voltage and reduce the system complexity such as misalignments and air gap. The coil’s misalignment and air gaps are changed through the buck dc–dc converter output. This algorithm aligns the coil by changing the ranges of misalignment and air gap to improve coupling efficiency. The EV is placed on its surface to charge the battery. The proposed work is designed in the MATLAB/Simulink platform and the experimental setup validation has been carried out through the laboratory test setup. The simulation output shows the high effective coupling between two coils for an 8 cm air gap with 89.7% power transfer efficiency (PTE) and the experimental output shows an 8 cm air gap with 84.77% of PTE. The obtained result demonstrates the performance of the DHOCC based on a wireless IPT system under less complexity.
线圈对准在无线充电系统中起着至关重要的作用,影响着电动汽车充电的传输功率和谐振耦合效率。此外,该控制模型还用于改善电动汽车充电无线感应功率传输(IPT)系统中的变换器运行。本文提出了一种针对降压dc-dc变换器的猎鹿优化变换器控制(DHOCC)算法,以有效降低期望电压,降低系统的复杂性,如失调和气隙。通过降压dc-dc变换器输出改变线圈的不对中和气隙。该算法通过改变线圈的不对中范围和气隙对线圈进行对中,提高了耦合效率。电动汽车被放置在其表面以给电池充电。所提出的工作在MATLAB/Simulink平台上进行了设计,并通过实验室测试装置对实验装置进行了验证。仿真结果表明,在8 cm气隙下,两线圈之间的有效耦合功率传输效率为89.7%,实验结果表明,在8 cm气隙下,两线圈之间的有效耦合功率传输效率为84.77%,验证了基于无线IPT系统的DHOCC在低复杂度下的性能。
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引用次数: 0
DOA Estimation Based on an Adversarial Learning Network via Small Antenna Arrays 基于小天线阵对抗学习网络的DOA估计
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-10-29 DOI: 10.1109/ICJECE.2024.3472657
Quan Tian;Ruiyan Cai;Yang Luo
As a key technology for radio monitoring and positioning, direction-of-arrival (DOA) estimation has garnered significant attention and has undergone in-depth research. This article proposes a new subspace-based DOA estimation algorithm based on an adversarial learning network. Considering the impact of the number of antennas in the signal-receiving array on the resulting DOA estimation accuracy, the proposed algorithm takes a covariance matrix corresponding to a small antenna array as the input of the adversarial learning network and reconstructs an extended covariance matrix corresponding to a virtual large antenna array. By introducing subspace technology, the multiple signal classification (MUSIC) algorithm can achieve high-resolution DOA estimation. Therefore, the extended covariance matrix corresponding to the virtual large antenna array is combined with the MUSIC to achieve DOA estimation. Simulated and real-world experimental results demonstrate that compared with conventional subspace-based DOA estimation algorithms, the proposed algorithm achieves significantly improved DOA estimation performance.
DOA估计作为无线电监测与定位的一项关键技术,受到了广泛的关注和深入的研究。提出了一种基于对抗性学习网络的子空间DOA估计算法。考虑到信号接收阵列中天线数量对DOA估计精度的影响,该算法以小型天线阵列对应的协方差矩阵作为对抗学习网络的输入,重构虚拟大型天线阵列对应的扩展协方差矩阵。通过引入子空间技术,多信号分类(MUSIC)算法可以实现高分辨率的DOA估计。因此,将虚拟大型天线阵对应的扩展协方差矩阵与MUSIC相结合来实现DOA估计。仿真和实际实验结果表明,与传统的基于子空间的DOA估计算法相比,该算法的DOA估计性能得到了显著提高。
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引用次数: 0
Supervised t-SNE for Metric Learning With Stochastic and Geodesic Distances 具有随机和测地线距离的度量学习的监督t-SNE
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-10-24 DOI: 10.1109/ICJECE.2024.3429273
Alaor Cervati Neto;Alexandre L. M. Levada;Michel Ferreira Cardia Haddad
The t-distributed stochastic neighbor embedding (t-SNE) consists of a powerful algorithm for visualizing high-dimensional data in a lower dimensional space. It is extensively employed in machine learning (ML) and data analysis, including unsupervised metric learning. In this article, we propose improvements concerning two main aspects of the t-SNE. First, the incorporation of class labels is adopted to increase its suitability for supervised classification. Second, stochastic and geodesic distances are used as dissimilarity measures to avoid the dependence of the standard Euclidean distance, which is particularly sensitive to outliers. Computational experiments with several real-world datasets indicate that the proposed methodological approach is capable of improving classification accuracy compared with established methods. The results indicate a superior performance compared with the regular t-SNE and linear discriminant analysis (LDA), and a dependence on fewer parameters in comparison with the state-of-the-art supervised uniform manifold approximation and projection (UMAP) algorithm.
t分布随机邻居嵌入(t-SNE)是一种在低维空间中可视化高维数据的强大算法。它被广泛应用于机器学习(ML)和数据分析,包括无监督度量学习。在本文中,我们提出了关于t-SNE的两个主要方面的改进。首先,引入类标签,增加了监督分类的适用性。其次,采用随机距离和测地线距离作为差异度量,避免了标准欧几里得距离对异常值特别敏感的依赖性。基于多个真实数据集的计算实验表明,与现有方法相比,本文提出的方法能够提高分类精度。结果表明,与常规t-SNE和线性判别分析(LDA)相比,该算法具有优越的性能,与最先进的监督均匀流形逼近和投影(UMAP)算法相比,该算法依赖的参数更少。
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引用次数: 0
A Secure Lightweight Wireless M-Bus Protocol for IoT: Leveraging the Noise Protocol Framework 物联网安全轻量级无线M-Bus协议:利用噪声协议框架
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-10-04 DOI: 10.1109/ICJECE.2024.3409156
Wafaa Anani;Abdelkader Ouda
Abstract-The escalating demand for secure communication in the Internet of Things (IoT), particularly in energy-sensitive devices such as smart meters, highlights a critical challenge: achieving robust security without excessive energy consumption. While various solutions have been proposed to minimize energy use, many fail to address the unique constraints of the IoT devices effectively. This article introduces an innovative approach by proposing a secure, lightweight wireless meter-bus (wM-Bus) protocol, specifically designed for the stringent resource constraints of the IoT environments. By incorporating the noise protocol framework (NPF), our protocol significantly reduces computational and power requirements without compromising security integrity. Through a methodical implementation that spanned five distinct phases, including a comparative analysis with the conventional transport layer security (TLS), our findings are compelling. The NPF, particularly with its NX and XX patterns, dramatically surpasses TLS in performance, extending operational lifetimes to approximately 9 and 7.88 years, respectively, in contrast to the 3.81 years offered by TLS. These results not only demonstrate the superior efficiency of the NPF in the IoT settings but also highlight its potential in striking an optimal balance between security and operational longevity.
物联网(IoT)中对安全通信的需求不断增长,特别是在智能电表等能源敏感设备中,这凸显了一个关键挑战:在不过度消耗能源的情况下实现强大的安全性。虽然已经提出了各种解决方案来最大限度地减少能源使用,但许多解决方案未能有效地解决物联网设备的独特限制。本文介绍了一种创新的方法,提出了一种安全、轻量级的无线仪表总线(wM-Bus)协议,专门为物联网环境的严格资源约束而设计。通过合并噪声协议框架(NPF),我们的协议在不影响安全完整性的情况下显着降低了计算和功耗需求。通过跨越五个不同阶段的系统实现,包括与传统传输层安全性(TLS)的比较分析,我们的发现令人信服。NPF,特别是其NX和XX模式,在性能上大大超过了TLS,将使用寿命分别延长到大约9年和7.88年,而TLS提供的使用寿命为3.81年。这些结果不仅证明了NPF在物联网环境中的卓越效率,而且还突出了其在安全性和运行寿命之间取得最佳平衡的潜力。
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引用次数: 0
Energy-Efficient Route Navigation (Eco-Routing) for Electric Vehicles in SUMO 相扑比赛中电动汽车的节能路线导航(Eco-Routing
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-10-03 DOI: 10.1109/ICJECE.2024.3425515
Insaf Sagaama;Amine Kchiche;Wassim Trojet;Farouk Kamoun
The diffusion of electric vehicles (EVs) is recently gaining great attention in the road transport and automotive sectors as an attempt to bring in an emission-free world. EVs are considered a key to future clean transportation systems. However, these vehicles still suffer from limited battery capacity and range anxiety. Therefore, EVs manufacturers are focusing on reducing energy consumption and CO2 emissions. In addition, research in the context of intelligent transportation systems embedding information and communication technologies are focusing on the optimization of the energy consumption as a valuable solution to foster the wide diffusion of EVs. In this article, we propose a simulation platform for eco-routing services based on estimating EV energy consumption to provide the most energy-efficient routes for the EV while traveling. We provide an energy map that can be used for eco-routing through a real-time data collection of the EV energy consumption. The energy map was established in the traffic simulator Simulation of Urban MObility (SUMO) to show the efficiency of the proposed eco-routing strategy compared to the other strategies based on establishing the fastest routes. This map will be exploited as good support, in the future, for advanced research on the EV concept.
最近,电动汽车(ev)的普及在道路运输和汽车行业引起了极大的关注,因为它试图实现零排放世界。电动汽车被认为是未来清洁交通系统的关键。然而,这些车辆仍然受到电池容量有限和里程焦虑的困扰。因此,电动汽车制造商将重点放在降低能耗和二氧化碳排放上。此外,在嵌入信息和通信技术的智能交通系统背景下,研究的重点是能源消耗的优化,作为促进电动汽车广泛扩散的有价值的解决方案。本文提出了一种基于电动汽车能耗估算的生态路径服务仿真平台,为电动汽车在行驶过程中提供最节能的路径。我们提供了一个能源地图,可用于生态路线通过实时数据收集的电动汽车的能源消耗。在交通模拟器仿真城市交通(SUMO)中建立能量图,以显示基于建立最快路线的生态路径策略与其他策略相比的效率。这张地图将在未来为电动车概念的高级研究提供良好的支持。
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引用次数: 0
Mixed-Reward Multiagent Proximal Policy Optimization Method for Two-on-Two Beyond-Visual-Range Air Combat 二对二超视距空战的混合奖励多智能体近端策略优化方法
IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Pub Date : 2024-09-23 DOI: 10.1109/ICJECE.2024.3451965
Haojie Peng;Weihua Li;Sifan Dai;Ruihai Chen
With recent advances in airborne weapons, modern air combats tend to be accomplished in the beyond-visual-range (BVR) phase. Multiaircraft cooperation is also required to adapt to the complexities of modern air combats. The scale of the traditional rule-based expert system will become incredible in this case. In view of this, a mixed-reward multiagent proximal policy optimization (MRMAPPO) method is proposed in this article that is used to help train cooperative BVR air combat tactics via adversarial self-play. First, a two-on-two BVR air combat simulation platform is established, and the combat game is modeled as a Markov game. Second, centralized training with decentralized execution architecture is established. Multiple actors are involved in the architecture, each corresponding to a policy that generates a specified kind of command, e.g., the maneuvering and firing command. Moreover, in order to accelerate training as well as enhance the stability of the training process, four optimization mechanisms are introduced. The experimental section discusses how the effectiveness of the MRMAPPO is verified with comparative and ablation experiments, along with several air combat tactics that emerge in the training process.
随着机载武器的发展,现代空战趋向于在超视距(BVR)阶段完成。多机协同也需要适应现代空战的复杂性。在这种情况下,传统的基于规则的专家系统的规模将变得难以置信。鉴于此,本文提出了一种混合奖励的多智能体近端策略优化(MRMAPPO)方法,通过对抗性自我博弈来帮助训练协同BVR空战战术。首先,建立了二对二BVR空战仿真平台,将空战博弈建模为马尔可夫博弈;其次,建立集中训练、分散执行的体系结构。体系结构中涉及多个参与者,每个参与者对应于生成特定类型命令的策略,例如,机动和发射命令。为了加快训练速度,提高训练过程的稳定性,引入了四种优化机制。实验部分讨论了MRMAPPO的有效性如何通过对比和烧蚀实验进行验证,以及在训练过程中出现的几种空战战术。
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引用次数: 0
期刊
IEEE Canadian Journal of Electrical and Computer Engineering
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