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

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Gas ascertainment via smartphone 通过智能手机确定气体
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705779
Roger Achkar, Christian Abou Haidar, Nicolas Makhoul, Hassan Osseili
Gas detectors have come a long way since the first commercial detector; yet, some though safe and efficient, they are expensive or pose high maintenance cost, others are simple and cheap but lack safety, mobility and efficiency. Gas Ascertainment via Smartphone (GAS) is the recommended detector that is far more advanced, and offers safety, mobility and accuracy, and is affordable by average factory owner. It is a combination of a smartphone application and a small robot. Running on an Android smartphone, the mobile application communicates with a single-board computer placed within the robot. The application's purpose is to receive a live camera stream from the robot, and alerts the user when the gas sensors detect dangerous concentrations. The user controls the movement of the robot through touch buttons found on the smartphone's screen. GAS is expected to make factories and storage departments safer. In addition to being affordable, the user can control the robot's movement via smartphone, over Wi-Fi, from a safe distant, far from the harmful gases. In addition, the user does not need to have any technical background or undergo training to operate the said detector. Moreover, in the future many features can be added to the system to make it satisfy the users' need, such as transmitting data over the Internet, porting the mobile application to other mobile operating systems, and making the robot follow the gas' leakage source.
自第一个商用探测器问世以来,气体探测器已经走过了漫长的道路;然而,有些虽然安全高效,但价格昂贵或维护成本高,有些简单便宜,但缺乏安全性,移动性和效率。通过智能手机确定气体(Gas)是推荐的更先进的检测器,具有安全性,移动性和准确性,并且普通工厂所有者都负担得起。它是智能手机应用程序和小型机器人的结合。在安卓智能手机上运行,移动应用程序与放置在机器人内部的单板计算机通信。该应用程序的目的是接收来自机器人的实时摄像机流,并在气体传感器检测到危险浓度时提醒用户。用户通过智能手机屏幕上的触摸按钮控制机器人的运动。预计天然气将使工厂和仓储部门更加安全。除了价格实惠之外,用户还可以在远离有害气体的安全距离上,通过智能手机、Wi-Fi控制机器人的运动。此外,用户不需要有任何技术背景或经过培训即可操作该探测器。此外,未来还可以为系统增加许多功能,使其满足用户的需求,例如通过互联网传输数据,将移动应用程序移植到其他移动操作系统,以及使机器人跟踪气体泄漏源。
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引用次数: 3
Modeling of a seven-phase series-connected three-motor drive system 七相串联三电机驱动系统的建模
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705765
Moidu Thavot, A. Iqbal, M. Saleh, Akhtar Kalam
Multi-phase machines (more than three phases) offer additional degree of freedom in control that can be used for developing improved drive system. This paper presents mathematical model of a seven-phase series-connected three-motor drive system. The modeling is done first in the phase variable domain and then transformed into the stationary common reference frame. The presented model is verified using simulation approach. The presented model can be used to validate the high performance control of the drive system.
多相电机(超过三相)提供额外的控制自由度,可用于开发改进的驱动系统。本文建立了七相串联三电机驱动系统的数学模型。首先在相位变量域中进行建模,然后将其转换为静止的公共参照系。采用仿真方法对模型进行了验证。该模型可用于验证驱动系统的高性能控制。
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引用次数: 7
Monocular vision-based collision avoidance system using shadow detection 基于阴影检测的单目视觉避碰系统
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705845
L. Ismail, L. Eliyan, R. Younes, R. Ahmed
This research paper is devoted for discussing a Vision-Based Collision Avoidance System that aims to provide the driver with a “third eye” to help him/her to detect obstacles and estimate distance between them and the host vehicles. It is based on a monocular approach of image processing that has one camera, which continuously captures images of the frontal view of the vehicle. Then the captured images are processed in order to detect obstacles, then estimate their distances from the host vehicle and, finally, take decisions to avoid them. The detection algorithm depends on detecting the shadow of the obstacles, as an invariant feature for all types of obstacles. Watershed segmentation technique is used to detect objects and triangulation technique is used to calculate the distance between the host vehicle and the detected obstacle. The proposed system can automatically control electric vehicles.
本文旨在探讨一种基于视觉的避碰系统,该系统旨在为驾驶员提供“第三只眼睛”,帮助他/她检测障碍物并估计它们与主车辆之间的距离。它基于单目图像处理方法,有一个摄像头,可以连续捕捉车辆正面视图的图像。然后对捕获的图像进行处理,以检测障碍物,然后估计它们与宿主车辆的距离,最后做出避开它们的决定。检测算法依赖于检测障碍物的阴影,作为所有类型障碍物的不变特征。使用分水岭分割技术检测目标,使用三角剖分技术计算主车辆与检测障碍物之间的距离。该系统可实现电动汽车的自动控制。
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引用次数: 3
Long-term fairness in multi-cell networks using rate predictions 使用速率预测的多小区网络的长期公平性
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705763
H. Abou-zeid, H. Hassanein, N. Zorba
Providing fair service to users in cellular networks is of significant importance to mobile operators. However, the geographic variability of network coverage and irregularity of user demand in space and time has made consistent fair service provisioning a challenging problem. Therefore, vehicular users traversing small cells experience significant service fluctuations. In this paper we investigate how rate predictions of mobile users can be utilized to improve long-term fairness. We use the α-fair utility function to formulate a predictive long-term resource allocator that improves fair user service over multiple cells. The α-fair utility provides the flexibility to obtain the desired long-term tradeoff between fairness and throughput. Numerical results indicate promising fairness-throughput gains over schemes that do not incorporate user rate predictions.
在蜂窝网络中为用户提供公平的服务对移动运营商来说具有重要意义。然而,网络覆盖的地域差异和用户需求在空间和时间上的不规则性,使得一致公平的服务提供成为一个具有挑战性的问题。因此,穿越小小区的车辆用户会经历显著的服务波动。在本文中,我们研究了如何利用移动用户的速率预测来提高长期公平性。我们使用α-公平效用函数来制定一个预测的长期资源分配器,以提高多个小区的公平用户服务。α-fair效用提供了在公平性和吞吐量之间获得期望的长期权衡的灵活性。数值结果表明,与不包含用户速率预测的方案相比,有希望获得公平吞吐量增益。
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引用次数: 8
Optimal locations of distributed generations in electrical power distribution system 配电系统中分布式电源的最优配置
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705843
K. Gameel
Integration of distributed generations (DGs) to electrical power systems is now being increasingly applied to act as an auxiliary source of energy with the main power feeder. For the nowadays trend of relying on the renewable energy resources as solutions for environmentally sustainable energy production, Photovoltaic (PV) generators - which are considered a type of inverter-based distributed generators - are considered as one of the promising solutions. In this paper, power flow analysis is presented to assess the performance of a distribution system with grid connected DGs. Multiple load flow solution is used to find the optimal location of DGs while monitoring the network losses and voltage profile at different cases of DGs' locations within the distribution system.
在电力系统中集成分布式电源(dg)作为辅助电源与主电源的应用越来越广泛。在当前依靠可再生能源作为环境可持续能源生产解决方案的趋势下,光伏发电机作为一种基于逆变器的分布式发电机被认为是一种很有前途的解决方案。本文采用潮流分析的方法来评估dg并网配电系统的性能。采用多负荷流求解方法,在监测配电系统中不同配电点位置的网损和电压分布的同时,找到配电点的最优位置。
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引用次数: 1
Multiple FACTS devices integration through distributed control system and its application on the GCC interconnection 多FACTS设备集散控制系统集成及其在GCC互联中的应用
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705750
T. Masood, S. Qureshi, R. Aggarwal, D. Kothari
Principal aim of this work is to present a HVDC/FACTS control devices implementation framework for multipurpose on the GCC (Qatar, KSA, Oman, Bahrain, Kuwait and UAE) power grid. This framework architecture encompassed of five layers of FACTS control devices (STATCOM, SSSC, and UPFC). This five-layer architecture is designed for its future growth and reusability so that more complex GCC power system problems are addressed within control architecture. This five layers framework-architecture named “FACTS-FRAME” which demonstrates how various FACTS devices are communicating to each other and controlling at different location on the GCC power grid in order to address complex power system issues which are persisting. The FACTS-FRAME is designed to handle and implement distributed control system which has the capability to control and adjust the devices operations as per needs. Based on distributed control the FACTS-FRAME has the capacity and capability to address poor voltage quality, poor load flow control, limited power transfer capacity and power system stability issues through parallel operations of various FACTS devices at different location on the GCC power grid. In order to prove and implement FACTS-FRAME method, numerous mathematical models are derived by considering current operational and safety scenarios to indentify and determine errors between the models how these are communicating to each other for control purposes. Distributed power flow algorithms are also developed in order to understand and implement FACTS devices as appropriate. Conclusively, very much promising results are obtained by establishing integrated multiple FACTS devices “FACTS-FRAME' network on the GCC power grid.
这项工作的主要目的是在海湾合作委员会(卡塔尔、沙特阿拉伯、阿曼、巴林、科威特和阿联酋)电网上提出一个多用途的HVDC/FACTS控制设备实施框架。该框架架构包括5层FACTS控制设备(STATCOM、SSSC和UPFC)。这个五层体系结构是为其未来的增长和可重用性而设计的,以便在控制体系结构中解决更复杂的GCC电力系统问题。这个名为“FACTS- frame”的五层框架架构演示了各种FACTS设备如何相互通信并在GCC电网的不同位置进行控制,以解决持续存在的复杂电力系统问题。fact - frame设计用于处理和实现分布式控制系统,该系统具有根据需要控制和调整设备操作的能力。fact - frame基于分布式控制,通过在GCC电网上不同位置的各种FACTS设备并联运行,具有解决电压质量差、负荷流控制差、电力传输能力有限和电力系统稳定性问题的能力。为了证明和实现fact - frame方法,通过考虑当前的操作和安全场景,导出了许多数学模型,以识别和确定模型之间的错误,这些模型如何相互通信以实现控制目的。还开发了分布式潮流算法,以便适当地理解和实现FACTS设备。最后,通过在GCC电网上建立集成多FACTS设备的“FACTS- frame”网络,取得了很好的效果。
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引用次数: 1
Matlab/Simulink based bi-directional partial resonant AC link converter 基于Matlab/Simulink的双向部分谐振交流链路变换器
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705811
S. Ahmed, H. Abu-Rub
This paper presents a three-to-three phase bidirectional partial resonant AC Link converter. The converter is modeled in MATLAB/SIMULINK software. The converter has three phase fixed input supplying a three phase load at variable voltage and variable frequency. The converter topology uses two bi-directional switches for each leg of the converter resulting in a total of 12 switches. The high frequency charging and discharging of the link inductor is the main criteria for power transfer from input to output. In each cycle a small interval is allocated for resonances which enables the switches for soft zero voltage turn on and turn off. The converter has the ability for buck and boost operation. Simulation and real-time results are shown for the verification of the proposed converter.
本文提出了一种三到三相双向部分谐振交流链路变换器。在MATLAB/SIMULINK软件中对变换器进行了建模。该变换器具有三相固定输入,以可变电压和可变频率提供三相负载。转换器拓扑为转换器的每个分支使用两个双向开关,总共有12个开关。链路电感器的高频充放电是功率从输入到输出传输的主要标准。在每个周期中,分配一个小间隔用于共振,使软零电压开关打开和关闭。该变换器具有降压和升压工作能力。仿真和实时结果验证了该转换器的有效性。
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引用次数: 1
Best available relay and user selection scheme for interference management in wireless cooperative communication networks 无线协作通信网络中干扰管理的最佳可用中继和用户选择方案
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705800
Zeineb Hraiech, A. Omri, M. Hasna, M. Siala, F. Abdelkefi
Cooperative communication is one of the important basics of the future wireless networks. It is used to improve communication reliability and enhance spectrum efficiency. However, the co-channel interference is still the major problem in degrading transmission performance. Thus, it becomes essential to propose an efficient technique to overcome this interference. In this paper, we introduce a novel cooperative communication scheme with interference management based on the combination of two cooperative techniques: Best Available Relay Selection (BARS) and Best Relay and User Selection (BRUS). This scheme maximizes the received signal to noise ratio (SNR), either while minimizing the interference by selecting an optimal time slot for users or while keeping the interference levels below a certain threshold. We derive exact closed form expressions for the outage probability, ergodic capacity, average consumed power and average Bit Error Probability (BEP) for the introduced cooperative scheme. Then, a comparison between the three techniques is established. Simulations are used to validate the analytical results, as well as to confirm the advantage behind this combination in enhancing interference management and improving system performance.
协作通信是未来无线网络的重要基础之一。用于提高通信可靠性和频谱效率。然而,同信道干扰仍然是影响传输性能的主要问题。因此,有必要提出一种有效的技术来克服这种干扰。本文提出了一种基于最佳可用中继选择(Best Available Relay Selection, BARS)和最佳中继与用户选择(Best Relay and User Selection, BRUS)两种协作技术相结合的具有干扰管理的新型协作通信方案。该方案最大限度地提高了接收到的信噪比(SNR),同时通过为用户选择最佳时隙来最小化干扰,或者将干扰水平保持在某一阈值以下。给出了该合作方案的中断概率、遍历容量、平均消耗功率和平均误码率的精确封闭表达式。然后,对三种技术进行了比较。仿真验证了分析结果,并证实了这种组合在加强干扰管理和提高系统性能方面的优势。
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引用次数: 4
Automatic handedness detection from off-line handwriting 从离线手写自动手性检测
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705761
S. Al-Maadeed, Fethi Ferjani, S. Elloumi, A. Hassaine, A. Jaoua
In forensics, the handedness detection or the classification of writers into left or right-handed helps investigators focusing more on a certain category of suspects. However, only a few studies have been carried out in this field. Classification of handwriting into a demographic category is generally performed in two steps: feature extraction and classification. In this study, we propose a system which extract characterizing features from handwritings and use those features to perform the classification of handwritings with regards to handedness. Classification rates are reported on the QUWI dataset, reaching almost 70% for Left and right Handwriting.
在法医学中,用手性检测或将写作者分为左撇子或右撇子有助于调查人员将更多的注意力集中在某一类嫌疑人上。然而,在这一领域进行的研究很少。将笔迹分类为人口统计学类别通常分为两个步骤:特征提取和分类。在这项研究中,我们提出了一个系统,该系统从手写体中提取特征特征,并利用这些特征进行手写体的手性分类。在QUWI数据集上报告了分类率,左、右笔迹的分类率几乎达到70%。
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引用次数: 13
Five-phase induction motor drive system with inverter output LC filter 五相感应电机驱动系统与逆变器输出LC滤波器
Pub Date : 2013-11-01 DOI: 10.1109/IEEEGCC.2013.6705767
Ahmad A. Al-Abduallah, A. Iqbal, Abdul Aziz Al Hamadi, K. Alawi, M. Saleh
In this paper, a five-phase induction motor drive system supplied using a PWM Voltage source Inverter (VSI) with output LC filter is discussed. The design and performance of drive system with LC filter connected at the output terminals of the PWM inverter is elaborated. The purpose of the filter is to eliminate both high-frequency harmonics of the voltage and current waveforms from the five-phase output voltages of the inverter, reduce the Total harmonic distortion (THD) and smoothing the voltage and current waveforms. Comparison is done between three-phase and five-phase induction motor drive with and without LC filter. The paper shows the simulation results using the MATLAB/SIMULINK of the three-phase and five-phase induction motors before and after adding the LC filter at the output of VSI. Experimental results for Five Phase drive system with LC Filter is presented to validate the simulation results.
本文讨论了一种采用输出LC滤波器的PWM电压源逆变器(VSI)供电的五相感应电动机驱动系统。阐述了在PWM逆变器输出端连接LC滤波器的驱动系统的设计和性能。滤波器的目的是消除逆变器五相输出电压中电压波形和电流波形的高频谐波,降低总谐波失真(THD),平滑电压波形和电流波形。对带LC滤波器和不带LC滤波器的三相和五相感应电动机进行了比较。本文给出了在VSI输出端添加LC滤波器前后,利用MATLAB/SIMULINK对三相和五相异步电动机的仿真结果。为验证仿真结果,给出了采用LC滤波器的五相驱动系统的实验结果。
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引用次数: 6
期刊
2013 7th IEEE GCC Conference and Exhibition (GCC)
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