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2017 International Conference on Computer, Communications and Electronics (Comptelix)最新文献

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Design and analysis of tunable optical filter using different cavity shapes 不同腔型可调谐滤光片的设计与分析
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8003998
Annu Meena, Ritu Sharma, A. Ghunawat
In this paper, a two-dimensional photonic crystal based tunable optical filter having Si rods with different shape cavities, as H-shape, square and circular is designed and investigated. The shape of Si rods is also changed from circular to square and the shift in resonating frequency of filter is achieved. The area of each cavity has been kept constant for achieving the result. The filter is designed by creating defects based resonator and two line defect based reflectors. These defects are formed by simple removing the Si (dielectric material) rods. The designs proposed in this paper are suitable in optical circuits as wavelength shifting circuits. Also, they can be used as noise filtering devices for communication purpose.
本文设计并研究了一种基于二维光子晶体的可调谐滤光器,该滤光器具有不同形状腔体(h形、方形和圆形)的硅棒。硅棒的形状也由圆形变为方形,实现了滤波器谐振频率的移位。为了达到这个效果,每个空腔的面积都保持不变。该滤波器是通过创建基于缺陷的谐振器和基于两行缺陷的反射器来设计的。这些缺陷是通过简单地去除Si(介电材料)棒而形成的。本文提出的设计方案适用于光电路中的波长移动电路。此外,它们还可以用作通信目的的噪声过滤装置。
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引用次数: 0
Design of an ultra-flattened negative dispersion elliptical spiral photonic crystal fiber with high nonlinearity and high birefringence 高非线性、高双折射的超扁平负色散椭圆螺旋光子晶体光纤的设计
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8004044
A. Ghunawat, Ritesh Chandra, G. Singh
Novel elliptical spiral photonic crystal fiber(PCF) having ultra-flattened negative dispersion, high nonlinearity and high birefringence is proposed. The finite element method is used to optimize the guiding properties. This design provides negative dispersion that is ultra-flattened within range of wavelength from 1385 nm to 1990 nm with deviation of ± 1.5 ps/nm/km. Dispersion value of −93.577 ps/nm/km at 1550 nm wavelength is achieved. The numerical results also indicate the birefringence up to order of 10−2 and nonlinear coefficient of (678.264, 763.485) W−1km−1 at 1550 nm wavelength for fundamental X and Y polarized modes.
提出了一种具有超扁平负色散、高非线性和高双折射特性的新型椭圆螺旋光子晶体光纤。采用有限元方法对导向性能进行了优化。该设计在1385 nm ~ 1990 nm波长范围内提供超平坦的负色散,偏差为±1.5 ps/nm/km。在1550nm波长处,色散值为−93.577 ps/nm/km。数值结果还表明,在1550 nm波长处,基模X和Y偏振模式的双折射高达10−2阶,非线性系数为(678.264,763.485)W−1km−1。
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引用次数: 6
Modified IP passing scheme to check correctness of passed IP in VANET 修改IP传递方案,检查VANET中IP传递的正确性
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8004014
Richa Jaiswal, K. Verma
Vehicular ad-hoc network (VANET) is a new emerging area of research; it consists of many challenging issues for implementing intelligent transportation system in real world scenario. Nowadays academic and industry is concerned about supporting vehicular network with seamless communication so that vehicles in an interconnected form transmit information to avoid traffic jams, accidents etc. and act intelligently. In VANET vehicles form the highly mobile network; due to high mobility vehicles frequently disconnect from internet, when vehicle enters into new area of network significant amount of time is used for acquiring an IP address from DHCP server, for reducing IP acquisition time IP passing schemes are defined. In IP passing scheme vehicle leaving the network area will pass its IP to the vehicle which is either entering in the network area or resides in the area. The node passing the IP can act maliciously to disrupt the connectivity of vehicle to the internet; if node modify the passing IP address, traditional IP passing scheme has given no provision to check whether correct IP address is passed or not. In this paper the scheme validate the source i.e. generator of IP using digital signature and also checks the correctness of passed IP address.
车载自组网(VANET)是一个新兴的研究领域;智能交通系统在现实场景中的实施存在许多具有挑战性的问题。目前学术界和产业界都在关注如何支持无缝通信的车联网,使车辆以互联的形式传输信息,避免交通堵塞、事故等,实现智能行动。在VANET中,车辆形成高度移动的网络;由于车辆的高移动性,车辆经常与互联网断开连接,当车辆进入新的网络区域时,需要花费大量的时间从DHCP服务器获取IP地址,为了减少IP获取时间,定义了IP传递方案。在IP传递方案中,离开网络区域的车辆将其IP传递给正在进入网络区域或驻留在该区域的车辆。通过IP的节点可以恶意破坏车辆与互联网的连接;如果节点修改了传递的IP地址,传统的IP传递方案没有提供检查是否传递了正确的IP地址的规定。该方案利用数字签名验证了IP地址的来源,即IP地址的生成者,并检查了传递的IP地址的正确性。
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引用次数: 0
An active power management strategy in a microgrid having static and rotating generators considering generation limits using water pumping loads 考虑抽水负荷发电限制的静态和旋转发电机微电网有源电源管理策略
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8004018
A. Tomar, Dushyant Sharma, S. Mishra
In this paper, control and operation of a microgrid having inverter based solar photovoltaic (PV) and diesel engine is presented. The microgrid is designed to meet rural applications. In the proposed microgrid, a water pumping system is considered as a dump load for ensuring economic operation of microgrid. Three scenarios i.e fully loaded, partially loaded and lightly loaded are considered to evaluate the performance of proposed microgrid. In fully loaded condition, PV operates at MPPT for extraction of maximum power and the diesel generator is operating at rated power. In second scenario, when the power demand is less, PV operates in de-rating mode to avoid operation of diesel generator below minimum operating limits; and thus ensures economical operation of the microgrid. However in lightly loaded condition or in case of low solar irradiation when PV power is already close to zero; a dump load is turned ON to ensure the operation of diesel generator in proper technical range. The paper shows the control of water pump as per the available demand and generation. To verify the performance of the proposed system, simulation in MATLAB/SIMULINK environment is performed and it is concluded that proposed microgrid with water pumping system as dump load ensures economical operation of microgrid.
本文研究了由逆变器太阳能光伏发电和柴油机组成的微电网的控制和运行。微电网是为满足农村应用而设计的。在本文提出的微电网中,将抽水系统作为保证微电网经济运行的倾卸负荷。考虑了全负荷、部分负荷和轻负荷三种情况来评估所提出的微电网的性能。在满负荷工况下,光伏发电以最大功率运行,提取最大功率,柴油发电机以额定功率运行。在第二种情况下,当电力需求较少时,光伏以降级模式运行,以避免柴油发电机低于最小运行限值运行;从而保证了微电网的经济运行。但在轻负荷或太阳辐照度低的情况下,光伏发电功率已经接近于零;为保证柴油发电机在适当的技术范围内运行,开启了卸荷。根据可用电量和发电量对水泵进行控制。为了验证系统的性能,在MATLAB/SIMULINK环境下进行了仿真,得出以水泵系统作为倾卸负荷的微电网能够保证微电网的经济运行的结论。
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引用次数: 0
Real-time water quality monitoring system using Internet of Things 利用物联网的实时水质监测系统
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8003942
Brinda Das, P. Jain
The conventional method of testing water quality is to gather samples of water manually and send to the lab to test and analyze. This method is time consuming, wastage of man power, and not economical. The water quality measuring system that we have implemented checks the quality of water in real time through various sensors (one for each parameter: pH, conductivity, temperature) to measure the quality of water. The ZigBee module in the system transfers data collected by the sensors to the microcontroller wirelessly, and a GSM module transfers wirelessly the data further from the microcontroller to the smart phone/PC. The system also has proximity sensors to alert the officials by sending a message to them via the GSM module in case someone tries to pollute the water body. This system can keep a strict check on the pollution of the water resources and be able to provide an environment for safe drinking water.
传统的水质检测方法是人工采集水样,送到实验室进行检测分析。这种方法耗时,浪费人力,不经济。我们实施的水质测量系统通过各种传感器(每个参数一个:pH,电导率,温度)实时检查水质,以测量水质。系统中的ZigBee模块将传感器采集的数据无线传输到单片机,GSM模块将数据从单片机进一步无线传输到智能手机/PC。如果有人试图污染水体,该系统还配有近距离传感器,通过GSM模块向官员发送信息,提醒他们。该系统可以对水资源的污染进行严格的检查,并能够提供安全的饮用水环境。
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引用次数: 59
Image encryption utilizing lossy image compression 利用有损图像压缩的图像加密
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8004020
Kapil Mishra, Ravi Saharan
As the network technologies are improving, more challenges are coming forward in form of huge amount of data being transferred through the network. A large portion of such data is of multimedia type consisting of huge amount of digital images being sent and received through the network. In this paper, an integrated image compression and encryption technique using run length encoding scheme and henon chaotic map is presented. Run length encoding scheme is common scheme and a natural choice for image compression. Run length encoding generates (value, count) pairs such that the value is repeated ‘count’ number of times. In this paper, we used the run length encoding technique for lossy image compression. We designed a lossy run length encoder that exploits the pixel redundancy and visual imperceptibility of human eye to fine details in the digital images. Along with compression we perform image encryption using henon chaotic map. After encryption the size and resolution of the image is changed that further enhances the security. Various experiments are performed calculating various performance matrices-histogram, information entropy, PSNR, Compression ratio, and MSE. The algorithm is secure enough to thwart various statistical attacks while being easy to implement and fast.
随着网络技术的不断进步,大量的数据需要通过网络传输,这给网络传输带来了更多的挑战。这些数据的很大一部分是多媒体类型的,包括通过网络发送和接收的大量数字图像。提出了一种基于行长编码和henon混沌映射的图像压缩与加密集成技术。行长编码是一种常用的编码方式,也是图像压缩的自然选择。运行长度编码生成(value, count)对,使值重复' count '次。在本文中,我们使用运行长度编码技术对有损图像进行压缩。我们设计了一种有损行长的编码器,利用了人眼对数字图像细节的像素冗余和视觉不可感知性。随着压缩,我们执行图像加密使用henon混沌映射。加密后,图像的大小和分辨率被改变,进一步提高了安全性。进行了各种实验,计算各种性能矩阵-直方图,信息熵,PSNR,压缩比和MSE。该算法具有足够的安全性,可以挫败各种统计攻击,同时易于实现和快速。
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引用次数: 1
Cognitive Radio: An efficient and effective solution for future spectrum implications 认知无线电:未来频谱影响的高效和有效的解决方案
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8003948
Sonia Sharma, C. C. Tripathi, R. Rishi
The paper presents an exhaustive visualization of different problems encountered in efficient utilization of spectrum for advanced wireless communication. It is a well known fact that there is a crisis for available radio spectrum due to incredible expansion and advancement of the communication systems and technologies. But in reality, there is no shortage of available spectrum but only lack of advance techniques for perfect utilization of spectrum. So, to tackle the future spectrum implications, the new emerging field of Cognitive Radio is explored here. Cognitive Radio has potential to revolutionize the way of spectrum allocation scheme worldwide because it can recognize spectrum condition and reconfigure itself to optimize its operation to compete with growing demands of the spectrum. In this paper, complete description and working operation of Cognitive Radio is presented. The paper provides special emphasis on various aspects of Cognitive Radio like different spectrum sensing methods and spectrum sharing schemes with the appropriate mathematical formulation. To facilitate implementation of this idea, new design requirement on antenna's features is thoroughly explained here.
本文详细介绍了先进无线通信中频谱有效利用所遇到的各种问题。众所周知,由于通信系统和技术的不可思议的扩展和进步,存在可用无线电频谱的危机。但在现实中,我们并不缺乏可用的频谱,只是缺乏先进的技术来完善地利用频谱。因此,为了解决未来频谱的影响,这里探讨了新兴的认知无线电领域。认知无线电能够识别频谱状况并对自身进行重新配置以优化其运行,从而适应日益增长的频谱需求,因此有可能在全球范围内彻底改变频谱分配方式。本文给出了认知无线电的完整描述和工作原理。本文特别强调了认知无线电的各个方面,如不同的频谱感知方法和频谱共享方案,并给出了适当的数学公式。为了便于实现这一理念,本文对天线特性的新设计要求进行了详细说明。
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引用次数: 6
Resistively compensated and SSF based VDBA offering high GBW and its application as a biquad filter 电阻补偿和基于SSF的VDBA提供高GBW及其作为双组滤波器的应用
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8003968
Urvashi Bansal, Maneesha Gupta, Shireesh Kumar Rai
This paper presents a new CMOS realization of voltage differencing buffered amplifier (VDBA). The input stage of VDBA is resistively compensated and output stage is a super source follower (SSF). The resistive compensation enhances gain bandwidth product (GBW) and buffer stage improves phase margin and linearity of the active element. The performance of the proposed block has been verified by using Mentor Graphics Eldo simulation tool with TSMC CMOS 0.18 µm process parameters. A new biquad filter is also realized using single VDBA. The three standard filter functions like band pass, high pass and low pass can be realized without changing the circuit topology. All applications are verified with their simulation results. The circuit of SSF based VDBA is quite small and compact. The ac simulation results of complete VDBA show that GBW is 950 MHz and power consumption is 0.45 mW.
本文提出了一种新的压差缓冲放大器(VDBA)的CMOS实现方法。VDBA的输入级采用电阻补偿,输出级采用超源从动器(SSF)。电阻补偿提高了增益带宽积(GBW),缓冲级提高了有源元件的相位裕度和线性度。采用Mentor Graphics Eldo仿真工具,采用TSMC CMOS 0.18µm工艺参数,验证了该模块的性能。利用单个VDBA实现了一种新的双组滤波器。在不改变电路拓扑的情况下,可以实现带通、高通和低通三种标准滤波器功能。仿真结果验证了所有应用程序的正确性。基于SSF的VDBA电路体积小,结构紧凑。完整VDBA的交流仿真结果表明,GBW为950 MHz,功耗为0.45 mW。
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引用次数: 1
Parameter-less fault locator using synchronized/un-synchronized data for overhead transmission line 基于同步/非同步数据的架空输电线路无参数故障定位器
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8003975
Jay Prakash Keshri, H. Tiwari
A new fault location algorithm based upon two end synchronized data for high voltage transmission line is proposed which considers arcing fault calculation. In this work least error square (LES) principal is used without considering the line parameters. The least error square principle is used on positive sequence equivalent circuit to calculate the fault distance from the reference bus. This algorithm is simple to understand and easy to implement. since it is independent of line parameter therefore it can be applied to both lumped and distributed transmission lines. This algorithm provide promising results against the variability in fault resistance on the account of two end data. PSCAD transient program is been used to create fault cases along with MATLAB, which calculate fault location. The results shows the effectiveness of the proposed algorithm.
提出了一种考虑电弧故障计算的基于两端同步数据的高压输电线路故障定位算法。本文采用最小误差二乘原理,不考虑线路参数。在正序等效电路中采用最小误差二乘原理来计算与参考母线的故障距离。该算法简单易懂,易于实现。由于它与线路参数无关,因此它既适用于集总输电线路,也适用于分布式输电线路。该算法对两端数据的故障抗力变化具有很好的抑制作用。利用PSCAD暂态程序创建故障案例,并结合MATLAB进行故障定位计算。实验结果表明了该算法的有效性。
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引用次数: 6
Driver Soberness System for road vehicles 道路车辆驾驶员清醒系统
Pub Date : 2017-07-01 DOI: 10.1109/COMPTELIX.2017.8003936
Sanket Jhunjhunwala, Harshit Gahlaut, H. R. Singh, R. Daman, Kamlesh Pandey
this project entitled “Driver Soberness System for road vehicles” is a safety system. The basic idea behind this system is to prevent and person under influence of alcohol to start and drive any road vehicle. The system takes power form the vehicles existing battery and is switched on as the key of the vehicle is set to ON position. The system then waits for a sample of breath as an input and then analyzes it for traces of alcohol using -OH and pressure sensors. If any trace of alcohol is found, the ignition relay is then kept OFF and the vehicle will not start even if the key is turned to ignition state. This allows the system to behave as an ignition lock device. Driver soberness system also measures the speed of the vehicle using a hall-effect sensor in running state along with the tilt in the steering wheel with the help of GY-61 acceleration sensor. If the set limit is exceeded the system then alerts the driver with a warning signal via a glowing LED and a buzzer indicating a case of rash driving.
这个名为“道路车辆驾驶员清醒系统”的项目是一个安全系统。这一制度背后的基本思想是防止醉酒的人启动和驾驶任何道路车辆。该系统从车辆现有的电池中获取电力,并在车辆的钥匙设置为on位置时启动。然后,系统等待呼气样本作为输入,然后使用-OH和压力传感器分析其酒精痕迹。如果发现任何酒精的痕迹,点火继电器然后保持关闭,车辆将无法启动,即使把钥匙转到点火状态。这使得系统的行为作为一个点火锁装置。驾驶员清醒系统还使用霍尔效应传感器在运行状态下测量车辆的速度,并在GY-61加速度传感器的帮助下测量方向盘的倾斜。如果超过了设定的限制,系统就会通过发光的LED和蜂鸣器发出警告信号,提醒驾驶员注意鲁莽驾驶。
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引用次数: 1
期刊
2017 International Conference on Computer, Communications and Electronics (Comptelix)
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