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2013 7th IEEE GCC Conference and Exhibition (GCC)最新文献

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BFSK modulation to compare intra-body communication methods for foot plantar pressure measurement BFSK调制比较体内通信方法对足底压力测量的影响
Pub Date : 2013-12-01 DOI: 10.1109/IEEEGCC.2013.6705770
A. Razak, A. Zayegh, R. Begg, M. Seyedi, D. Lai
Intra-body communication (IBC) is a recent and emerging wireless communication technology, which treats the human body as a transmission medium for transmitting and receiving the electrical signals. Pioneer IBC researchers have proposed two types of methods, which are galvanic coupling and capacitive coupling. This paper compares and evaluates a binary frequency-shift keying (BFSK) modulation signal using galvanic and capacitive coupling via IBC for foot plantar pressure sensors. The results of the experiment would guide us as to which method of IBC is more suitable for the specific application. The communication system is designed for foot pressure measurement to analyze pressure distribution during everyday life activities. The research targets IBC operating in the band of 1MHz to 100MHz, and based on the empirical evidence; for this particular application, galvanic coupling shows more promising performances in power, total harmonic distortion and signal-to-noise ratio measurements.
体内通信(IBC)是一种新兴的无线通信技术,它以人体为传输介质,进行电信号的发送和接收。IBC研究人员提出了两种方法,即电耦合和电容耦合。本文比较和评价了一种通过IBC采用电容耦合的二元移频键控(BFSK)调制信号用于足底压力传感器。试验结果将指导我们选择哪种IBC方法更适合具体应用。该通信系统是为分析日常生活活动中的压力分布而设计的足底压力测量系统。本研究以工作在1MHz ~ 100MHz频段的IBC为研究对象,并基于经验证据;对于这种特殊的应用,电偶在功率、总谐波失真和信噪比测量方面表现出更有希望的性能。
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引用次数: 8
Design of UWB Monopole antenna using Genetic Algorithms 基于遗传算法的超宽带单极天线设计
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705755
Abbas E. Teirab, J. Jervase, S. Mneina
In this paper, Genetic Algorithm (GA) optimization technique is adopted to design an UWB Monopole antenna operating in the 3.1-10.6 GHz band. The main goal of the algorithm is to minimize the return loss below -10 dB for better impedance matching. The designed antenna was miniaturized to (47×47 mm2) and simulated on low cost FR4 substrate. The algorithm implementation was achieved by MATLAB™ software and the electromagnetic simulation was carried out based on the Finite Difference Time Domain (FDTD) technique by CST Microwave Studio software. Finite Element Method (FEM) employed by the frequency domain electromagnetic software HFSS was used to verify the results. The simulation reveals UWB impedance matching exceeding 10 GHz with omni-directional radiation pattern.
本文采用遗传算法(GA)优化技术设计了工作在3.1-10.6 GHz频段的超宽带单极天线。该算法的主要目标是将回波损耗降至-10 dB以下,以获得更好的阻抗匹配。设计的天线被小型化到(47×47 mm2),并在低成本的FR4基板上进行了仿真。算法通过MATLAB™软件实现,利用CST Microwave Studio软件基于时域有限差分(FDTD)技术进行电磁仿真。利用频域电磁软件HFSS的有限元方法对计算结果进行了验证。仿真结果表明,UWB阻抗匹配超过10ghz,具有全向辐射方向图。
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引用次数: 6
Cost effective air-conditioning for Bahrain domestic applications 巴林国内应用的高性价比空调
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705836
Waleed M. Elzanati, S. Ameen
Bahrain's electrical grid system faces a major problem in the summer due to the increase in the energy consumption and particularly in refrigeration and air-conditioning. With sophisticated modern methods being developed to reduce the energy consumption of such electrical load, the research is concerned and applied to the case of Bahrain's electrical grid system. The paper investigates two systems which are using new technology in the air conditioning system to reduce peak load and to avoid risks of peak load. This risk will increase losses in the electric grid and can be considered as a major risk is shutdown which is catastrophic for any electric grid. These two systems are solar air conditioning system and electronic air conditioning system. The paper provides a full explanation of the proposed regulations together with the study and comparison of two systems in terms of ability to reduce peak load and optimal cost-effective. The investigation recommended the use of DC inverter air conditioning system in Bahrain because it can be considered as the most cost effective.
由于能源消耗的增加,特别是在制冷和空调方面,巴林的电网系统在夏季面临着一个重大问题。随着先进的现代方法被开发出来,以减少这种电力负荷的能源消耗,这项研究被关注并应用于巴林电网系统的案例。本文研究了在空调系统中采用新技术来降低峰值负荷和避免峰值负荷风险的两种系统。这种风险将增加电网的损失,并且可以被认为是停机的主要风险,这对任何电网来说都是灾难性的。这两种系统是太阳能空调系统和电子空调系统。本文对拟议的规则进行了全面的解释,并从降低峰值负荷的能力和最优成本效益两方面对两种系统进行了研究和比较。调查建议巴林使用直流逆变空调系统,因为它可以被认为是最具成本效益的。
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引用次数: 3
A new five-phase to three-phase back-to-back current source converter based wind energy conversion system 一种新型的五相-三相背靠背电流源变换器风能转换系统
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705774
M. Elgenedy, A. Abdel-Khalik, A. Elserougi, S. Ahmed, A. Massoud
Wind energy is one of the fastest growing renewable energy sources. The increased penetration of wind power into the utility grid brings challenges such as voltage and frequency fluctuations, generator torque ripples, and grid faults to power converter design in wind energy conversion systems (WECSs). Multiphase PM generators offers a promising solution to many challenges due to their inherited advantages over the three phase counterparts including reduced converter per leg rating and reduced torque ripples, which directly affect the lifetime of the drive train. In high power applications, direct drive PM generators are usually employed. Among different topologies of power converters, current source converter features a simple converter structure, low switching dv/dt, and reliable short circuit protection. In this paper, a new wind energy conversion system is proposed based on a direct drive five-phase PMSG connected to the grid using current source converters (CSCs). The generator side converter, operating in the rectification mode (CSR), is controlled to control the DC-link current, while the grid side converter, operating in the inversion mode (CSI), controls the active and reactive powers injected to the grid. The five-phase generator side converter is controlled using sinusoidal pulse width modulation (SPWM), while conventional space vector modulation is employed to control the three-phase grid side. A 5 MW system with typical system data is simulated via MATLAB/SIMULINK to validate the proposed topology.
风能是发展最快的可再生能源之一。风力发电进入公用电网的不断增加,给风能转换系统(wecs)的电源转换器设计带来了电压和频率波动、发电机转矩波动和电网故障等挑战。多相永磁发电机与三相发电机相比,具有固有的优势,包括减少每支腿转换器的额定功率,减少扭矩波动,这直接影响了传动系统的使用寿命,因此,多相永磁发电机为许多挑战提供了一个有希望的解决方案。在大功率应用中,通常采用直接驱动永磁发电机。在各种电源变换器拓扑结构中,电流源变换器具有变换器结构简单、开关dv/dt低、短路保护可靠等特点。本文提出了一种基于电流源变换器(CSCs)与电网连接的直接驱动五相PMSG的新型风能转换系统。发电机侧变流器以整流模式(CSR)运行,控制直流电流,而电网侧变流器以反转模式(CSI)运行,控制注入电网的有功和无功功率。发电机侧的五相变换器采用正弦脉宽调制(SPWM)控制,而三相电网侧的控制采用传统的空间矢量调制。通过MATLAB/SIMULINK仿真了一个具有典型系统数据的5mw系统,验证了所提出的拓扑结构。
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引用次数: 3
Standard definition ANPR system on FPGA and an approach to extend it to HD 基于FPGA的标准定义ANPR系统及其高清扩展方法
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705778
X. Zhai, F. Bensaali
Automatic Number Plate Recognition (ANPR) system becomes an important research topic in Intelligent Transportation systems (ITS). More recently, high-definition (HD) cameras are used for providing better performance in ANPR system. However, most known approaches for standard definition (SD) number plate localisation (NPL) are not suitable for real-time HD image processing as the real-time requirement cannot be met due to the computationally intensive cost of localising the number plate. In this paper, a solution to link previously designed architectures for NPL, character segmentation and character recognition in a SD ANPR system is first described. The system is to be implemented on a single stand-alone FPGA-based processing unit. An approach to extend the SD ANPR system to HD ANPR system without significantly increasing the computational cost is then introduced.
车牌自动识别(ANPR)系统成为智能交通系统(ITS)中的一个重要研究课题。近年来,为了在ANPR系统中提供更好的性能,高清(HD)摄像机被广泛使用。然而,大多数已知的标准清晰度(SD)车牌定位(NPL)方法都不适合实时高清图像处理,因为车牌定位的计算密集型成本无法满足实时要求。本文首先描述了一种在SD ANPR系统中连接先前设计的NPL、字符分割和字符识别体系结构的解决方案。该系统将在一个独立的基于fpga的处理单元上实现。然后介绍了一种在不显著增加计算成本的情况下将SD ANPR系统扩展到HD ANPR系统的方法。
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引用次数: 10
Segregation of technical and commercial losses in an 11 kV feeder 11千伏馈线中技术损耗和商业损耗的分离
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705752
R. S. Kumar, T. Raghunatha, R. Deshpande
This paper describes the segregation of losses into technical and commercial and uses both empirical and simulation techniques. Conclusion shows that in case of feeders which are small and has fewer components the empirical formulas could well be used to segregate the losses.
本文描述了技术和商业损失的分离,并使用了经验和模拟技术。结论表明,对于小部件的给料器,经验公式可以很好地分离损失。
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引用次数: 3
Early detection of an instantaneous total blockage accident in the core of a sodium-cooled fast reactor 钠冷快堆堆芯瞬间全堵塞事故的早期检测
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705821
Sinuhé Martinez-Martinez, N. Messai, D. Nuzillard, J. Jeannot
The Total Instantaneous Blockage (TIB) of an assembly in the core of a Sodium-cooled Fast Reactor (SFR) is under study. The dataset is provided by the Atomic Energy and Alternative Energies Commission (CEA). Through the estimation of the temperatures on the top of each assembly of the SFR's core, an original strategy for the detection of a TIB is proposed and implemented to a hypothetical simulated incident. Since there is no knowledge of the system's model, it is considered as a blackbox and the estimation of temperatures is made by a Neural Network.
研究了钠冷快堆堆芯组件的总瞬时堵塞问题。该数据集由原子能和替代能源委员会(CEA)提供。通过对SFR核心每个组件顶部温度的估计,提出了一种检测TIB的原始策略,并将其实现到一个假设的模拟事件中。由于不知道系统的模型,因此将其视为黑箱,并由神经网络进行温度估计。
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引用次数: 0
Design and implementation of low cost Hand-held Logic Analyzer 低成本手持逻辑分析仪的设计与实现
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705738
Sujur Alagar Ramalingam
This paper presents the design and implementation of a Handheld Logic Analyzer. It is based on the FPGA to capture 9 channel digital data and the ARM7 processor as a master controller, which reads these 9 channel data from the FPGA and sends them to the color graphics LCD to display as 9 channel waveforms. The system features include the ability to capture the data up to 10 MHz and the user can select the data sample rate and also measure the time/period of any of the 9 waveforms. This is a simple, standalone, handheld and cost effective Logic timing Analyzer specifically designed for students, which is easy to use and aids their learning process.
本文介绍了一种手持逻辑分析仪的设计与实现。它是基于FPGA捕获9通道数字数据,ARM7处理器作为主控制器,从FPGA读取这9通道数据并将其发送给彩色图形LCD显示为9通道波形。该系统的特点包括能够捕获高达10mhz的数据,用户可以选择数据采样率,也可以测量9种波形中的任何一种的时间/周期。这是一个简单的,独立的,手持式和具有成本效益的逻辑时序分析仪,专为学生设计,这是易于使用,并有助于他们的学习过程。
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引用次数: 3
Active disturbance rejection control — Based load frequency controller of interconnected power systems involving wind power penetration 基于自抗扰控制的风电渗透互联系统负荷频率控制器
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705812
Emad Abu Khousa, A. Ismail
The load frequency control (LFC) problem is becoming more significant today in accordance with increasing grid size, changing structure, integration of renewable energy sources, and complexity of interconnected power systems. In this paper the assessment of Active Disturbance Rejection Controller (ADRC) based LFC is presented. This control algorithm offers a new design concept and inherently robust controller building block that requires very little information about the system. It actively estimates and compensates for the effects of the unknown dynamics and disturbances. The control strategy was applied to a single isolated power area and then to three interconnected control areas. The simulation results showed that the used controller was able to maintain a robust performance and grid stability by minimizing the effect of disturbances caused by load variation and wind power penetration.
随着电网规模的不断扩大、结构的不断变化、可再生能源的不断整合以及互联电力系统的日益复杂,负荷频率控制问题变得越来越重要。本文对基于LFC的自抗扰控制器(ADRC)进行了评估。这种控制算法提供了一种新的设计概念和固有的鲁棒控制器构建块,它只需要很少的系统信息。它主动估计和补偿未知动态和干扰的影响。该控制策略首先应用于一个孤立的电源区域,然后应用于三个互联的控制区域。仿真结果表明,所采用的控制器能够最大限度地减少负荷变化和风力穿透所引起的干扰的影响,从而保持鲁棒性能和电网稳定性。
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引用次数: 6
Distributed spectrum sensing of correlated observations in cognitive radio networks 认知无线电网络中相关观测的分布式频谱感知
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705827
S. Sedighi, Zahra Pourgharehkhan, Abbas Taherpour, T. Khattab
In this paper, Collaborative Spectrum Sensing (CSS) as one of the most efficient sensing approaches in Cognitive Radio Networks (CRNs) is investigated when the Secondary Users (SUs) observations are assumed to be correlated. A novel soft decision rule based on the covariance matrix of the SUs observations is proposed. By using the proposed scheme, we derive two Generalized Likelihood Ratio (GLR) detectors and then, we obtain the closed-form expressions for the detection and false-alarm probabilities. The proposed collaborative sensing method can control the available trade-off between efficient spectrum usage and more accurate spectrum sensing, which is not possible in the other counterpart collaborative sensing methods based on the soft decision rule. In order to have the best performance in the terms of spectral efficiency, power efficiency and spectrum sensing, we study the problem of designing the fusion parameter, the decision threshold and the number of SUs to maximize power efficiency and spectrum usage efficiency under the constraint that the Primary User (PU) is sufficiently protected. Finally, we provide the computer simulations to verify the validity of the obtained results.
本文对认知无线网络(crn)中最有效的感知方法之一——协同频谱感知(CSS)进行了研究。提出了一种基于SUs观测值协方差矩阵的软决策规则。在此基础上,推导了两个广义似然比检测器,并给出了检测概率和虚警概率的封闭表达式。本文提出的协同感知方法可以控制频谱有效利用与更精确的频谱感知之间的权衡,这是其他基于软决策规则的协同感知方法所无法做到的。为了在频谱效率、功率效率和频谱感知方面具有最佳性能,在充分保护主用户(PU)的前提下,研究了融合参数、决策阈值和单元数的设计问题,以最大限度地提高功率效率和频谱使用效率。最后,通过计算机仿真验证了所得结果的有效性。
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引用次数: 9
期刊
2013 7th IEEE GCC Conference and Exhibition (GCC)
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