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2017 International Conference on Electrical, Computer and Communication Engineering (ECCE)最新文献

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Design of a nearly zero ultra-flattened dispersion shifted fiber with high birefringence and high non-linearity 高双折射、高非线性、近零超平坦色散位移光纤的设计
Shabbir Chowdhury, Saikat Kushary
A nearly zero ultra-flattened dispersion shifted photonic crystal fiber with high birefringence and high non-linear property has been proposed. This fiber offers only −0.472 ps/(nm-km) to 0.18 ps/(nm-km) dispersion within the wavebands 1500 nm to 1900 nm with non-linear coefficient 46 W −1km −1 at 1550nm wavelength. Finite element method (FEM) is being used to simulate the fiber design.
提出了一种具有高双折射和高非线性特性的近零超扁平色散位移光子晶体光纤。该光纤在1500 nm至1900 nm波段内的色散仅为- 0.472 ps/(nm-km)至0.18 ps/(nm-km),在1550nm波长处的非线性系数为46 W−1km−1。采用有限元法对光纤的设计进行了仿真。
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引用次数: 4
A quasi-elliptic low pass filter based on complementary split ring resonator with sharp selectivity and wide stopband 基于互补裂环谐振腔的准椭圆低通滤波器,具有高选择性和宽阻带
S. Parvez, N. Sakib, M. N. Mollah
This Paper illustrates the low pass filter (LPF) topology based on complementary split ring resonator (CSRR) with added slot. The introduction of a slot structure in the CSRR can not only reduce the group velocity of the transmission but also decrease the inductive reactance which results in compactness of the device by providing the transmission zero after resonance. Therefore, quasi-elliptic function and extension of the rejection band has been established. In other words, this LPF exhibits significant improvement on rejection bandwidth, selectivity and return loss (RL) in the passband. Besides, with electrical length for the ring is o.11Xg (single cell), the device characterizes by pointing out the capability of the approach with rejection levels of 13-dB over 50% of the stopband and selectivity of about 142 dB/GHz. The group delay is within 0.20 ns over 75% of frequency of interest. Well agreement between theoretical and simulated data are accomplished.
本文介绍了一种基于加槽互补裂环谐振器的低通滤波器拓扑结构。在CSRR中引入缝隙结构,不仅可以降低传输的群速度,还可以通过提供谐振后的传输零点来降低感应抗,从而使器件更加紧凑。因此,建立了准椭圆函数和抑制带的扩展。换句话说,该LPF在通带的抑制带宽、选择性和回波损耗(RL)方面表现出显著的改善。此外,环的电长度为0.11 xg(单个单元),该器件的特点是指出该方法的抑制水平为13 dB,超过50%的阻带,选择性约为142 dB/GHz。组延迟在0.20 ns内,超过感兴趣频率的75%。理论数据与模拟数据吻合较好。
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引用次数: 1
A new approach to develop a template based load model that can dynamically adopt different types of non-linear loads 提出了一种基于模板的荷载模型的新方法,该模型可以动态地接受不同类型的非线性荷载
S. M. Salam, M. J. Uddin, Saif Hannan
In modern days, residential and commercial users use various types of loads most of which produce huge harmonics. Though most of the people are using more energy efficient power equipment's due to high costing of electric power consumption, but they have a little concern on power quality. A comprehensive study is required to find out the evaluation of the effects of the nonlinear loads of different combination on the overall power quality of a distributed network. There are different indices for power quality that would be maintained in utilities to ensure harmless operation of the power supply network including generators, transmission lines and transformers. In this paper, our focus is to develop an integrated load model that can dynamically adopt different types of loads so that we can conclude theoretically on the power quality parameters on any combination of load.
在现代,住宅和商业用户使用各种类型的负载,其中大多数产生巨大的谐波。虽然由于电力消耗成本高,大多数人都在使用更节能的电力设备,但他们对电能质量的关注却很少。如何评价不同组合的非线性负荷对分布式网络整体电能质量的影响,需要进行全面的研究。为了确保包括发电机、输电线路和变压器在内的供电网络的无害化运行,公用事业中需要保持不同的电能质量指标。在本文中,我们的重点是建立一个可以动态地采用不同类型负载的集成负载模型,从而从理论上得出任何负载组合下的电能质量参数。
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引用次数: 8
Effective subspace detection based on cross cumulative residual entropy for hyperspectral image classification 基于交叉累积残差熵的高光谱图像分类子空间检测
Md. Ali Hossain, Boshir Ahmed, S. S. Ghosh, Md. Nazrul Islam Mondal
Remote sensing hyperspectral images are blessings of technology through which the ground objects can be detected effectively with the cost of computer processing. For classification of hyperspectral images finding an effective subspace is very important to classify them efficiently. In recent years, many researchers have drawn their interest to extract data more effectively from hyperspectral dataset. In this research, an approach has been proposed to find the effective subspace by measuring the relevance of individual features through Cross Cumulative Residual Entropy from the Principal Component images. The Support Vector Machine has been used as the classifier for the assessment of the feature reduction performance. Experiment has been completed on real hyperspectral dataset and achieved 97% of accuracy which is better than the standard approaches studied.
遥感高光谱图像是技术的产物,通过它可以以计算机处理的代价有效地检测地物。在高光谱图像分类中,寻找有效的子空间是实现高光谱图像分类的关键。近年来,如何从高光谱数据集中更有效地提取数据已经引起了许多研究者的兴趣。在本研究中,提出了一种利用主成分图像的交叉累积残差熵测量单个特征的相关性来寻找有效子空间的方法。使用支持向量机作为分类器来评估特征约简的性能。在实际高光谱数据集上完成了实验,准确度达到97%,优于所研究的标准方法。
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引用次数: 2
Anti-theft protection of vehicle by GSM & GPS with fingerprint verification 通过指纹验证的GSM和GPS防盗保护车辆
Mrinmoy Dey, M. A. Arif, Md. Asif Mahmud
Recently vehicle tracking system is getting vast popularity because of the rising number of the stolen vehicles. Vehicle theft is happening on parking and sometimes driving in unsecured places. This research work explores how to avoid this kind of stealing and provides more security to the vehicles. The implemented system contains single-board embedded system which is equipped with global system for mobile (GSM) and global positioning system (GPS) along with a microcontroller installed in the vehicle. The use of GSM and GPS technologies allows the system to track the object and provides the most up-to-date information about on-going trips. Moreover, fingerprint verification is done in the implemented system to ensure the driving of correct person. The implemented system is very simple with greater security for vehicle anti-theft protection and low cost technique compared to others.
最近,由于被盗车辆数量的增加,车辆跟踪系统越来越受欢迎。车辆盗窃发生在停车场,有时在不安全的地方行驶。本研究工作探讨了如何避免这种盗窃行为,为车辆提供更多的安全性。所实施的系统包含配备全球移动系统(GSM)和全球定位系统(GPS)的单板嵌入式系统以及安装在车辆中的微控制器。GSM和GPS技术的使用使系统能够跟踪目标,并提供有关正在进行的行程的最新信息。此外,在实现的系统中还进行了指纹验证,以保证驾驶人的正确性。所实现的系统结构简单,具有较高的车辆防盗安全性和较低的技术成本。
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引用次数: 26
Design and performance analysis of a microstrip line-fed on-body matched flexible UWB antenna for biomedical applications 生物医学用微带馈电体上匹配柔性超宽带天线的设计与性能分析
Akash Biswas, Akib Jayed Islam, A. Al-Faruk, S. Alam
A novel design of a microstrip line-fed flexible on-body matched Ultra-Wideband (UWB) antenna is proposed in this study. Small and flexible design along with noteworthy performance of this proposed antenna upholds its strong position amongst previous antennas of similar type and can be used for various biomedical applications. The antenna is designed to operate in the UWB (3.1–10.6GHz) frequency range where resonant frequency is at 5.93GHz. The main notability of this design refers to its subtle dimension, lower sensitivity to angular misalignments and higher fidelity that makes it perfectly fit for biomedical applications, especially in Wireless Body Area Network (WBAN). Both flexible and rigid conditions of the antenna are studied here as it needs to be tested in different medium which will more effectively corroborate future practical implementation. Several types of calculations and performance measurements of this antenna have been completed by using CST MW studio while maintaining all the dielectric properties of human tissue. With overall dimension of 40mm × 40mm × 1.44mm, the antenna is placed upon a three layered human phantom model to run simulation process where FR4 is used as substrate and copper is used as patch material. Performance analysis of the designed antenna is evaluated in terms of return loss, bandwidth, radiationpattern, directivity, gain, total efficiency and power analysis. Finally, Specific Absorption Rate (SAR) distribution of the antenna is analyzed to make it perfectly biocompatible for practical use.
提出了一种新型微带馈线柔性体上匹配超宽带天线的设计方案。小而灵活的设计以及值得注意的性能,该天线在以前类似类型的天线中保持了强大的地位,可用于各种生物医学应用。该天线设计工作在超宽带(3.1-10.6GHz)频率范围内,谐振频率为5.93GHz。该设计的主要特点是其尺寸小巧,对角度失调的敏感度较低,保真度较高,非常适合生物医学应用,特别是在无线体域网络(WBAN)中。由于天线需要在不同的介质中进行测试,因此本文研究了天线的柔性和刚性条件,这将更有效地证实未来的实际实施。在保持人体组织的所有介电特性的同时,使用CST MW studio完成了该天线的几种类型的计算和性能测量。天线的外形尺寸为40mm × 40mm × 1.44mm,以FR4为衬底,铜为贴片材料,放置在三层人体幻影模型上进行仿真。从回波损耗、带宽、辐射方向图、指向性、增益、总效率和功率分析等方面对设计的天线进行了性能分析。最后,分析了天线的比吸收率(SAR)分布,使其在实际应用中具有完美的生物相容性。
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引用次数: 20
Numerical modeling of SnS ultra-thin solar cells SnS超薄太阳能电池的数值模拟
Mrinmoy Dey, Maitry Dey, N. Rahman, I. Tasnim, R. Chakma, U. Aimon, M. Matin, N. Amin
In modern civilization, the solar energy as renewable energy is chosen for the generation of the clean and green energy which is very reliable in response of sustainable development. The SnS is a binary semiconductor compound which has very favourable optoelectronic properties for lost cost thin film solar cell. Therefore, the researchers have great attention to investigate the ultra-thin SnS solar cell. In this research work, the deep level defects on the performance of SnS solar cells with Bismuth Sulfide (Bi2S3) as window layer material was carried out by numerical analysis using SCAPS 2802 simulator. In the proposed cell, the SnS absorber layer was reduced that minimized the cost, saving process time and energy required for fabrication. In this study, it was found that the feasibility of this proposed ultra thin SnS solar cells and showed higher efficiency of 20.05 % (Jsc = 36.61 mA/cm2, FF = 0.614, Voc = 0.89 V). Consequently, it has been investigated the thermal stability of the SnS solar cell to explore the hidden potentiality of absorber layer.
在现代文明中,选择太阳能作为可再生能源作为清洁、绿色的能源,是对可持续发展的一种非常可靠的回应。SnS是一种二元半导体化合物,在损耗成本薄膜太阳能电池中具有很好的光电性能。因此,超薄SnS太阳能电池的研究备受关注。本研究利用SCAPS 2802模拟器对硫化铋(Bi2S3)为窗层材料的SnS太阳能电池的深层缺陷进行了数值分析。在所提出的电池中,减少了SnS吸收层,从而最大限度地降低了成本,节省了制造所需的工艺时间和能量。在本研究中,发现该超薄SnS太阳电池的可行性,并显示出20.05%的效率(Jsc = 36.61 mA/cm2, FF = 0.614, Voc = 0.89 V),因此,研究了SnS太阳电池的热稳定性,以探索吸收层的隐藏潜力。
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引用次数: 12
Feature mining for effective subspace detection and classification of hyperspectral images 基于特征挖掘的高光谱图像子空间检测与分类
Md. Ali Hossain, Hasin-E-Jannat, Boshir Ahmed, Md. Al Mamun
Hyperspectral image analysis is becoming an important field of research interest because of its wide range of applications in ground surface identification. New technology is being developed to capture hyperspectral images to cover more spectral bands and finer spectral resolution but also increases challenges to process those images for high correlation among data and both the spectral and spatial redundancy. This paper proposed a feature mining approach for the relevant feature selection as well as efficient classification of the hyperspectral dataset. Principal Component analysis and Mutual Information is two widely used feature reduction techniques utilized in conjunction for the feature reduction of the remote sensing data set. The kernel support vector machine classifier is used to assess the effectiveness of the detected subspace for classification. The proposed feature mining approach is able to achieve 99.3% classification accuracy on real hyperspectral data which higher than the standard approaches studied.
高光谱图像分析因其在地表识别中的广泛应用而成为一个重要的研究领域。人们正在开发新技术来捕获高光谱图像,以覆盖更多的光谱波段和更精细的光谱分辨率,但同时也增加了处理这些图像的挑战,因为数据之间的高度相关性以及光谱和空间冗余。本文提出了一种特征挖掘方法,用于高光谱数据集的相关特征选择和高效分类。主成分分析和互信息是两种广泛使用的特征约简技术,它们结合在一起用于遥感数据集的特征约简。使用核支持向量机分类器评估检测到的子空间分类的有效性。所提出的特征挖掘方法对真实高光谱数据的分类准确率达到99.3%,高于研究的标准方法。
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引用次数: 8
Chebyshev quarter wavelength wideband bandstop filter based on dumbbell annular ring resonator 基于哑铃环形谐振器的切比雪夫四分之一波长宽带带阻滤波器
S. Parvez, N. Sakib, M. N. Mollah
In this letter, a novel seventh order equal ripple wideband bandstop filter (BSF) is proposed and demonstrated. This device is based on dumbbell annular ring (DAR) resonators which introduces additional magnetic coupling with quarter wavelength open circuited stubs in the conventional 50-Ω transmission line. However, introducing this DAR resonators (DARRs) generate multiple transmission zeros which is responsible for wider stop band and can be determined from the S-plane. Moreover, the proposed BSF has selectivity up to 170 dB/GHz, rejection level is better than 50-dB, suppress reflection up to 12-dB in the pass band and fractional bandwidth 113.1%. Besides, the group delay is within 3 ns over the 80% of the stop band. The simulated frequency performances of the device from two different software's are in well agreement with the theoretical data.
本文提出并演示了一种新型的七阶等纹波宽带带阻滤波器(BSF)。该装置基于哑铃环形(DAR)谐振器,该谐振器在传统的50-Ω传输线中引入了与四分之一波长开路存根的额外磁耦合。然而,引入这种雷达谐振器(darr)会产生多个传输零,这些零负责更宽的阻带,可以从s平面确定。此外,所提出的BSF选择性高达170 dB/GHz,抑制电平优于50 dB,在通带抑制反射高达12 dB,分数带宽为113.1%。在停止带的80%以上,群延迟在3ns以内。两种软件模拟的频率特性与理论数据吻合较好。
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引用次数: 1
Weakest location exploration in IEEE-14 bus system for voltage stability improvement using STATCOM, synchronous condenser and static capacitor 利用STATCOM、同步电容器和静态电容器寻找IEEE-14总线系统电压稳定性改善的最薄弱位置
F. Mahmood, S. Ahmad, G. Mukit, M. Shuvo, S. Razwan, M. Maruf, Fadi M. Albatsh
In modern power systems, long transmission lines coupled with fast-growing load demand factor have resulted in a more stressed system than ever before. This paper is aimed at static voltage stability analysis(VSA) of IEEE-14 bus standard test case for weakest region exploration using conventional P-V and Q-V curve methods for investigating voltage unstable regions, predicting and preventing system blackouts. Furthermore, the static capacitor, synchronous condenser and STATCOM have been used for effective voltage restoration and regulation purposes. Hence the power grid can effectively manage and provide electricity reliably, safely and economically to consumers. Power World Simulator environment has been used for performance analysis.
在现代电力系统中,较长的输电线路加上快速增长的负荷需求因素导致系统比以往任何时候都更加紧张。采用常规P-V和Q-V曲线方法对IEEE-14总线标准测试用例进行静态电压稳定性分析(VSA),以探测电压不稳定区域,预测和预防系统停电。此外,静态电容器、同步电容器和STATCOM已被用于有效的电压恢复和调节目的。因此,电网可以有效地管理并可靠、安全、经济地向消费者提供电力。使用Power World模拟器环境进行性能分析。
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引用次数: 11
期刊
2017 International Conference on Electrical, Computer and Communication Engineering (ECCE)
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