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2017 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE)最新文献

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An Overview of Compact Antennas for RF Energy Harvesting 用于射频能量收集的紧凑型天线综述
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468923
Sleebi K Divakaran, D. D. Krishna, Nasimuddin
The paper presents an overview of compact microstrip antennas for RF energy harvesting systems. A detailed literature review of several compact antennas suitable for energy harvesting systems is discussed along with different antenna polarizations. Various size reduction techniques for antennas along with trade-offs are summarized and compared
本文介绍了用于射频能量收集系统的紧凑型微带天线的概况。详细的文献综述了几种适用于能量收集系统的紧凑型天线,并讨论了不同的天线极化。总结和比较了天线的各种尺寸减小技术以及权衡
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引用次数: 3
Hand Action Classification via Wavelet Reconstruction and Sub-Frame Based Feature Extraction 基于小波重构和子帧特征提取的手部动作分类
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468883
Saima Zahin, Odrika Iqbal, S. Fattah, C. Shahnaz
Classification of basic hand movements from surface electromyography (sEMG) requires extraction of important information from the signal. In this study, a very simple analysis and classification of sEMG signal are presented which includes sub-frame formation and feature extraction. At first, the signal is decomposed by wavelet transform at level 1 using db44 as the mother wavelet. Both the approximate and the detailed coefficients are then used for vector reconstruction which is then subsequently broken down into overlapping sub-frames. A feature extraction step is carried out afterward from each of these sub-frames of the reconstructed signal and also the raw sEMG data. The mean of these sub-frame features is then subjected to classification using K-nearest neighborhood (KNN) classifier in a hierarchical approach. The proposed method is tested considering 5 cross 2 cross-validation scheme on a publicly available sEMG dataset containing six different hand movements collected from two females and two males. The study includes a comparison of classification accuracy of direct feature extraction from raw data and also from wavelet coefficients before reconstruction. This research proposes a highly simplified and faster way of classification of basic hand movements by decomposition and reconstruction providing an improved accuracy compared to previous methods of similar classification.
从表面肌电图(sEMG)中对手部基本运动进行分类需要从信号中提取重要信息。本文提出了一种非常简单的表面肌电信号分析和分类方法,包括子帧的形成和特征提取。首先,以db44为母小波对信号进行一级小波分解。然后将近似系数和详细系数用于矢量重建,然后将其分解为重叠的子帧。然后从重建信号的每个子帧和原始表面肌电信号数据中进行特征提取步骤。然后使用k -最近邻(KNN)分类器以分层方法对这些子框架特征的平均值进行分类。在一个公开可用的表面肌电信号数据集上,考虑5交叉2交叉验证方案,对所提出的方法进行了测试,该数据集包含来自两名女性和两名男性的六种不同的手部运动。该研究包括对原始数据的直接特征提取和重构前小波系数的分类精度的比较。本研究提出了一种高度简化和快速的手部基本动作的分解和重构分类方法,与以往类似的分类方法相比,该方法的准确率有所提高。
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引用次数: 1
Optimal PMU Placement for Complete Power System Observability under (P–1) Contingency (P-1)偶然性下电力系统完全可观测性的PMU优化配置
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468924
D. Shrivastava, S. A. Siddiqui, K. Verma
The complete state of the power system can be estimated by optimal number and proper location of Phasor Measurement Units (PMUs). In this paper, an Optimal PMU Placement (OPP) problem that incorporates intact base case conditions and single PMU loss (P-1) contingency resulting in communication failure is formulated. Integer Linear Programming (ILP) is simulated to get optimal number and locations of PMUs in OPP problem. The proposed method is investigated on four test systems: Brazilian 7-bus equivalent system, IEEE 14-bus system, New England 39-bus power system and 145-bus 50 generator power system.
相量测量单元(pmu)的最优数量和位置可以估计电力系统的完整状态。本文提出了一个包含完整基本情况条件和单个PMU丢失(P-1)偶然性导致通信失败的最优PMU放置(OPP)问题。为了得到OPP问题中pmu的最优数量和位置,对整数线性规划(ILP)进行了仿真。在巴西7总线等效系统、IEEE 14总线系统、新英格兰39总线电力系统和145总线50发电机电力系统四个测试系统上对该方法进行了研究。
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引用次数: 3
Land Use/ Land Cover Classification of Google Earth Imagery 谷歌地球图像的土地利用/土地覆盖分类
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468898
D. Sowmya, Vishwas S Hegde, J. Suhas, Raghavendra V Hegdekatte, P. D. Shenoy, K. Venugopal
Google Earth is a source of high spatial resolution images. The freely available Google Earth (GE) images are utilized to generate Land use/Land cover thematic map of the highly heterogeneous landscape of typical urban scene. In this paper, we have presented Euclidean Distance and Average Pixel Intensity based K-NN classification to classify five different land objects. The classification accuracy of the proposed method is compared against generic K-NN. The overall classification accuracy and the kappa value of generic K-NN are found to be 75.04% and 0.74 respectively. Whereas, proposed method results with 76.38% and 0.78. Both the methods exhibits classification error because of poor spectral reflectance properties of google earth imagery.
谷歌地球是高空间分辨率图像的来源。利用免费获取的Google Earth (GE)图像,生成典型城市高度异质景观的土地利用/土地覆盖专题地图。在本文中,我们提出了基于欧氏距离和平均像素强度的K-NN分类对五种不同的地物进行分类。将该方法的分类精度与一般的K-NN进行了比较。通用K-NN的总体分类准确率为75.04%,kappa值为0.74。而本文提出的方法的结果分别为76.38%和0.78。由于谷歌地球图像的光谱反射率较差,这两种方法都存在分类误差。
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引用次数: 8
Opto-electronic analysis of promising photovoltaic Cs2PdCl4Br2: An upcoming perovskite material 有前途的光伏材料Cs2PdCl4Br2的光电分析:一种未来的钙钛矿材料
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468904
J. Sahariya, A. Soni, K. C. Bhamu
The metal halide perovskites are attracting much attention due to their potential applications in optoelectronic devices. Herein, we review and calculate a new avenue for Cs$_{mathbf {2}}$PdCl$_{mathbf {4}} mathbf {Br} _{mathbf {2}}$ perovskites by computing its electronic and optical properties to show its candidature in optoelectronics. For the computation of electronic and optical properties, we have used modified Becke Johnson approximation available in Wien2k code, based on full potential lineariesd augmented plane wave method. Investigated electronic and optical properties show that $mathbf {Cs} _{mathbf {2}}$PdCl$_{mathbf {4}} mathbf {Br} _{mathbf {2}}$ has the indirect band gap of 1.70 eV. The significant intense peaks in absorption spectra between energy range 2–3 eV reveals the utility of this compound in solar cells and other optoelectronic devices.
金属卤化物钙钛矿因其在光电器件中的潜在应用而备受关注。本文通过计算Cs$ {mathbf {2}}$PdCl$ {mathbf {4}} mathbf {Br} {mathbf{2}}$钙钛矿的电子和光学性质,回顾和计算了Cs$ {mathbf{2}}$钙钛矿的新途径,以显示其在光电子学中的候选性。对于电子和光学性质的计算,我们使用了基于全势线性增广平面波方法的改进的Wien2k代码中的Becke Johnson近似。研究了$mathbf {Cs} _{mathbf {2}}$PdCl$_{mathbf {4}} mathbf {Br} _{mathbf{2}}$的间接带隙为1.70 eV。在能量范围2-3 eV之间的吸收光谱中有显著的强峰,揭示了该化合物在太阳能电池和其他光电器件中的应用。
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引用次数: 0
Enhanced Power Generation from Piezoelectric System under Partial Vibration Condition 部分振动条件下压电系统的增强型发电
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468920
L. Varshney, Shivi
Partial vibration reduces the energy yield of the piezoelectric system. The performance of the system deteriorates during partial vibration condition. The losses in the piezoelectric system during partial vibration condition depend on the vibration pattern, system configuration and the physical location of the partially vibrated modules in the system. In this paper, a method is presented to configure the system such that the power generated under partial vibration condition is enhanced. In this approach, the piezoelectric system is arranged in a Total Cross Tied (TCT) connection. This pattern reduces the effect of partial vibration on the system thereby enhancing the generated power.
局部振动降低了压电系统的能量产生。在局部振动状态下,系统的性能会下降。压电系统局部振动时的损耗取决于振动模式、系统结构和部分振动模块在系统中的物理位置。本文提出了一种提高系统局部振动功率的配置方法。在这种方法中,压电系统被安排在一个全交叉捆绑(TCT)连接。这种模式减少了部分振动对系统的影响,从而提高了发电功率。
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引用次数: 6
A Three-Level Inverter Based Direct Torque Control Scheme With Reduced Common-Mode Voltage For Induction Motor Drive 一种基于低共模电压三电平逆变器的异步电机直接转矩控制方案
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468877
Aathira Hegde, K. I. Nirsha, P. Rajeevan
A Direct Torque Control Scheme with reduced common mode voltage for an Induction Motor drive fed by a three-level inverter is proposed in this paper. This scheme serves to reduce the common-mode voltage, by optimally selecting voltage space vectors in such a way that the common-mode voltage magnitude is either $displaystyle frac {V_{DC}}{6}$ or 0 where VDC is the maximum magnitude of the realizable voltage space vector. To validate the proposed scheme extensive simulations are carried out on MATLAB-Simulink platform. The proposed DTC scheme is experimentally verified on an induction motor fed by a three-Ievel inverter using TMS320F28335 digital signal processor for control algorithm implementation.
针对三电平逆变器驱动的异步电动机,提出了一种降低共模电压的直接转矩控制方案。该方案通过优化选择电压空间矢量,使共模电压幅值为$displaystyle frac {V_{DC}}{6}$或0,其中VDC为可实现电压空间矢量的最大幅值,从而降低共模电压。为了验证所提出的方案,在MATLAB-Simulink平台上进行了大量的仿真。利用TMS320F28335数字信号处理器实现控制算法,在三电平逆变器驱动的感应电机上进行了实验验证。
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引用次数: 1
Automatic Segmentation of Pectoral Muscle in Mammogram Images Using Global Thresholding and Weak Boundary Approximation 基于全局阈值和弱边界逼近的乳房x线图像胸肌自动分割
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468895
Syeda Iffat Naz, Monika Shah, M. Bhuiyan
Removal of pectoral muscle is a major challenge in automatic detection of tumors breast mammograms. The intensity value for pectoral muscle is same as tumor presented (if any) in the breast region. It interferes in the detection of breast tumor and maximizes false positive error. In this paper, an efficient approach is introduced to remove the pectoral muscle from breast mammograms. Unwanted labels are removed by segmenting high intensity areas using convex-hull. Median filter is used to remove salt and pepper noise. Then global thresholding is used for the removal of breast tissues which appear along with pectoral muscle region during thresholding by pixel count on the connection of pectoral muscle and breast lesions. If the number of pixels in a small area are less than preset value on the boundary of pectoral muscle than it is considered not to be the part of pectoral muscle. Using this approximation regions outside the pectoral muscle are removed. Also minimal connectivity array is used to segment the portion connected to pectoral muscle which is not a part of it. The well-known mini-MIAS database with 322 mammograms is used to study the performance of the proposed method. 92.86% images are well segmented; 4.97% images are also segmented to an acceptable level. This performance is significantly better than that of several existing techniques.
切除胸肌是乳房x光自动检测肿瘤的主要挑战。胸肌的强度值与乳房区域的肿瘤(如果有的话)相同。它会干扰乳腺肿瘤的检测,并使假阳性误差最大化。本文介绍了一种从乳房x光检查中去除胸肌的有效方法。通过使用凸壳分割高强度区域来去除不需要的标签。中值滤波用于去除椒盐噪声。然后采用全局阈值法,通过对胸肌与乳腺病变的连接进行像素计数,去除阈值过程中与胸肌区域一起出现的乳腺组织。如果一个小区域的像素数小于胸肌边界上的预设值,则认为该区域不是胸肌的一部分。使用这个近似,胸肌外的区域被移除。最小连接阵列也用于分割与胸肌相连的部分,而不是胸肌的一部分。使用著名的mini-MIAS数据库322张乳房x光片来研究所提出方法的性能。92.86%的图像分割良好;4.97%的图像也被分割到一个可接受的水平。这种性能明显优于几种现有技术。
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引用次数: 3
Analysis of effective capacity over Beaulieu-Xie fading model 基于Beaulieu-Xie衰落模型的有效容量分析
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468917
Veenu Kansal, Simranjit Singh
This paper presents an exact analysis of effective capacity over the Beaulieu-Xie fading by introducing the concept of delay constraints. This fading model is composed of multiple no. of line-of-sight (LOS) components with some diffuse power. To analyze the effective capacity of this fading channel, the closed-form expressions are derived. Also, the asymptotically analysis by considering the cases of high and low signal-to-noise ratio (SNR) is also investigated to explore the effects of fading parameters on the effective capacity of this wireless fading channel. The obtained analytical results are validated by reducing the expression as a special case of existing fading channels. The numerical results are presented to show the effect of several parameters on the effective capacity.
本文通过引入延迟约束的概念,给出了在Beaulieu-Xie衰落下的有效容量的精确分析。该衰落模型由多个数字组成。视距(LOS)组件具有一定的漫射功率。为了分析该衰落信道的有效容量,导出了封闭表达式。同时,通过考虑高信噪比和低信噪比情况的渐近分析,探讨了衰落参数对无线衰落信道有效容量的影响。通过对已有衰落信道的特殊情况进行简化,验证了所得到的分析结果。数值结果显示了几个参数对有效容量的影响。
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引用次数: 22
Transmission Network Expansion Planning Considering Transmission Switching and Pumped-Storage 考虑传输交换和抽水蓄能的输电网扩容规划
Pub Date : 2017-12-01 DOI: 10.1109/WIECON-ECE.2017.8468901
Chandrakant Rathore, P. Thote, S. Kamble, V. Naik, Puneet Singh, Mukta Jukaria
This paper presents, a static transmission network expansion planning (STNEP) with considering the pumped-storage (PS) unit, and the transmission switching (TS) concept. The aim of this work, is to minimize the total cost (TC) of the system. The TC is the summation of the transmission line cost (CTL) and the generation cost (GC) of thermal generating units. TS is a relatively new area of research which provides a path to the transmission system operator (TSO) to avoid generation expansion and transmission expansion. The addition of new lines increases the investment cost hence, now-a-days more renewable energy resources have been adopted by the TSO. The proposed STNEP problem is modelled using a DC power flow model. The performance of the proposed scheme is tested on the modified Garver 6-bus system. The results indicate that the combinatorial effect of PS unit and TS has reduced the total cost of the system notably.
本文提出了一种考虑抽水蓄能(PS)单元和传输交换(TS)概念的静态输电网扩展规划(STNEP)。这项工作的目的是使系统的总成本(TC)最小化。TC是火电机组的输电线路成本(CTL)和发电成本(GC)的总和。TS是一个相对较新的研究领域,它为输电系统运营商(TSO)提供了避免发电扩容和输电扩容的途径。新线路的增加增加了投资成本,因此,如今更多的可再生能源已被TSO采用。所提出的STNEP问题采用直流潮流模型进行建模。在改进的Garver 6总线系统上测试了该方案的性能。结果表明,PS和TS的组合效应显著降低了系统的总成本。
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引用次数: 2
期刊
2017 IEEE International WIE Conference on Electrical and Computer Engineering (WIECON-ECE)
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