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2019 4th International Conference on Recent Trends on Electronics, Information, Communication & Technology (RTEICT)最新文献

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Implementation and Performance Analysis of Adaptive Routing Algorithms for Mesh and Torus Topology in Network on Chip 片上网络中网格和环面拓扑自适应路由算法的实现及性能分析
Ajey Amtange, Aditya Hegde, B. Sahana
This paper proposes implementation of adaptive West-First and North-Last routing algorithms for torus topology of Network on Chip. A comparative study has been done between Torus and Mesh topology after implementing these algorithms. These live lock and dead lock free turn model algorithms prove to be more efficient in terms of average packet latency for a given injection rate. These turn model algorithms are adaptive in nature as they check for the availability of the free virtual channel in the next router before sending packet to it. If the free channel is not available then the packet is re-routed to another router. They are minimal routing algorithms. The simulation is carried for a 4×4 Torus as well as Mesh topology under similar traffic conditions or injection ratio. It is observed that average hop count for torus got reduced to 3.076 when North-Last or West-First routing algorithm was used, as compared to 3.493 in mesh topology. Saturation injection rate increased by 19.101% in torus when compared with mesh for the same algorithm.
针对片上网络的环面拓扑结构,提出了一种自适应的西先和北后路由算法。在实现这些算法后,对环面拓扑和网格拓扑进行了比较研究。对于给定的注入速率,这些活锁和死锁自由回合模型算法在平均数据包延迟方面被证明是更有效的。这些回合模型算法是自适应的,因为它们在向下一个路由器发送数据包之前检查其空闲虚拟通道的可用性。如果空闲通道不可用,那么数据包将被重新路由到另一个路由器。它们是最小路由算法。在相似的流量条件或注入比下,对4×4环面和网格拓扑进行了仿真。观察到,采用北后或西先路由算法时,环面的平均跳数减少到3.076,而mesh拓扑的平均跳数为3.493。与网格相比,环面饱和注入率提高了19.101%。
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引用次数: 0
Weld Distortion Detection by Non-contact Dimension Measurement Based on Image Processing 基于图像处理的非接触式尺寸检测焊缝变形
Tushar R. Mahore, Kshitija Wankhade, Sayali Walekar, M. Kokare
Aiming towards the problem of traditional weld distortion measurement method that they are less efficient and can cause errors in measurement. Study of the non-contact measurement system for weld distortion is mentioned in this paper. The hardware part of non-contact dimension system consists of a camera, lens and welded object. Processing is done on the images of the welded object. In order to improve detection, various algorithms are mentioned. Advantages of the mentioned method are that it avoids human mistakes, decreases the cost, higher the speed of control line and coincidence with new production standards. It improves the efficiency of distortion measurement system and gives better results. This paper describes the study of various methods of weld distortion measurement.
针对传统焊接变形测量方法效率低、测量误差大的问题。本文介绍了焊接变形非接触式测量系统的研究。非接触式尺寸系统的硬件部分由摄像机、镜头和焊接物体组成。对焊接物体的图像进行处理。为了提高检测效率,本文提出了多种算法。上述方法的优点是避免了人为错误,降低了成本,提高了控制线的速度,符合新的生产标准。提高了畸变测量系统的工作效率,取得了较好的测量效果。本文介绍了各种焊接变形测量方法的研究。
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引用次数: 0
Efficient Word Processing Applications Using Radix Tree 使用基数树的高效字处理应用程序
Unnati Koppikar, Akshata Rajur, G. Jayalaxmi
Computer needs an efficient mechanism to store, retrieve, manage and process huge amount of data. When the data is organized efficiently on the storage device and on the main memory then it can be accessed quickly for processing. It will reduce the access time and will provide better working environment to the users. Data structure provides a scheme to organize the data which will lead to systematic organization of the data in such a way that data will be quickly available for the processor to process. Word processing is a powerful feature that allows the user to create, insert, modify and search the text in a file. The authors of this paper propose usage of radix trie datastructure for efficiently handling word processing applications. This datastructure can be used for storing and retrieving information for various applications such as Prefix Matching (Auto complete), Information Retrieval, Dictionary Implementation. In this paper authors discuss their experience in design, implementation of Radix Tree for word processing applications. The experimental result shows that radix tries performs better compared to other word processing datastructure such as hash tables.
计算机需要一种高效的机制来存储、检索、管理和处理海量数据。当数据在存储设备和主存储器上被有效地组织起来时,它就可以被快速地访问以进行处理。它将减少用户的访问时间,为用户提供更好的工作环境。数据结构提供了一种组织数据的方案,这种方案将导致数据的系统组织,使数据能够快速地供处理器处理。文字处理是一个强大的功能,它允许用户创建、插入、修改和搜索文件中的文本。本文的作者建议使用基数trie数据库来有效地处理字处理应用程序。该数据结构可用于存储和检索各种应用程序的信息,如前缀匹配(自动完成)、信息检索、字典实现。在本文中,作者讨论了他们在为字处理应用程序设计、实现基数树的经验。实验结果表明,与哈希表等其他字处理数据结构相比,基数尝试具有更好的性能。
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引用次数: 0
Feature Extraction of Intra-Pulse Modulated LPI Waveforms Using STFT 脉冲内调制LPI波形的STFT特征提取
Anupama Gupta, A. A. Bazil Rai
LPI radar is a class of radar systems that has the ability ‘to see and not to be seen’ i.e. because of certain characteristics that make them nearly invisible to intercept radars. LPI signal, in addition to undetected ability by an unintended receiver, even if intercepted, an intercepted transmission provides no transmitter bearing information to the interceptor. Therefore, LPI waveforms make it tough to be intercepted by means of passive receivers such as radar warning receivers, electronic support (ES) and electronic intelligence receivers, and also help in increasing the detection range of target compared to adversary receiver. So it's needed to intercept the LPI signals embedded within noise so that necessary Electronic Counter Measures (ECM) can be applied. Thus, the primary objective of this paper is to investigate method to counter LPI radar threats because of the specially designed LPI waveforms for that we propose an algorithm to detect and identify the parameters of the LPI signals like frequency, pulse width, PRI, and modulations, using Short time Fourier transform (STFT), even when the signal-to-noise ratio (SNR) is −20dB.
LPI雷达是一类雷达系统,具有“看到和不被看到”的能力,即由于某些特性,使它们几乎不可见拦截雷达。LPI信号,除了不被无意的接收器发现之外,即使被拦截,被拦截的传输也不会向拦截器提供发送器的方位信息。因此,LPI波形使得雷达预警接收机、电子支援(ES)和电子情报接收机等被动接收机难以拦截,并且与敌方接收机相比,有助于增加目标的探测距离。因此,需要拦截嵌入噪声中的LPI信号,以便应用必要的电子对抗措施(ECM)。因此,本文的主要目标是研究对抗LPI雷达威胁的方法,因为专门设计的LPI波形,因此我们提出了一种算法来检测和识别LPI信号的参数,如频率,脉宽,PRI和调制,使用短时傅立叶变换(STFT),即使信噪比(SNR)为- 20dB。
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引用次数: 36
Design of Magnetic Tunnel Junction based Low Power Non-Volatile Ternary Content Addressable Memory 基于磁隧道结的低功耗非易失性三元内容可寻址存储器设计
Amoghraj, A. Chavan
Ternary content addressable memory (TCAM) are widely used for their high speed search operation. However, TCAMs have larger area and power consumption. The use of advanced technology nodes and emerging non-volatile devices can improve the same. In this paper, magnetic tunnel junction (MTJ), which is a non-volatile device is used to reduces the overall power consumption of TCAM by realizing zero standby power. A novel Verilog-A model of MTJ which is suitable for SOI technology was developed. The conventional NOR and NAND type TCAM cells, and two MTJ based hybrid TCAM cells are constructed using 45 nm RF-SOI technology node. The proposed cells use only one transistor for precharge. The simulation results show that the NOR and NAND type TCAM cells consumes 29.11 μW and 19.33 μW of power respectively. The MTJ based TCAM cells consume 7.33 μW and 8.58 μW of power which is about 70% and 63% lower compared to the NAND and NOR TCAM cells.
三元内容可寻址存储器(TCAM)因其高速的搜索操作而得到广泛的应用。然而,tcam具有较大的面积和功耗。使用先进的技术节点和新兴的非易失性设备可以改善这一点。本文采用磁隧道结(MTJ)这种非易失性器件来实现零待机功率,从而降低TCAM的整体功耗。开发了一种适用于SOI技术的新型Verilog-A MTJ模型。采用45 nm RF-SOI技术节点构建了传统的NOR和NAND型TCAM电池,以及两个基于MTJ的混合TCAM电池。所提出的电池只使用一个晶体管进行预充电。仿真结果表明,NOR和NAND型TCAM单元的功耗分别为29.11 μW和19.33 μW。基于MTJ的TCAM电池的功耗分别为7.33 μW和8.58 μW,分别比NAND和NOR TCAM电池低70%和63%。
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引用次数: 0
Compressive Sensing Using 180 nm Technology 基于180nm技术的压缩感知
R. Rao, R. Ramkumar, V. R. Vandana, P. Prabhavathi
The natural analog signals available have to be converted into digital form to avoid losses during transmission, so that it can be processed by the devices easily. This process of conversion is called sampling. For accurate sampling and reconstruction of a signal it must be sampled at a rate at least equal to or greater than twice the highest frequency of the input signal, which is termed as the Shannon-Nyquist criteria. The main hardware component, the Analog-to-Digital converter (ADC) for sampling is quite challenging to build. Compressive sensing which does compression and sampling at the same time helps to overcome this hardware limitation. It samples the signal by enabling the sub Nyquist under sampling technique. The main idea is to obtain the specific signal by just a few samples, as a result reducing the power consumed and the cost involved for the same as compared to conventional Shannon-Nyquist Sampling process.
为了避免传输过程中的损耗,必须将现有的自然模拟信号转换为数字信号,使其易于被设备处理。这种转换过程称为采样。为了对信号进行精确采样和重建,必须以至少等于或大于输入信号最高频率的两倍的速率进行采样,这被称为香农-奈奎斯特准则。主要硬件组件,用于采样的模数转换器(ADC)的构建相当具有挑战性。同时进行压缩和采样的压缩感知有助于克服这种硬件限制。它通过启用下奈奎斯特采样技术对信号进行采样。其主要思想是通过几个采样来获得特定的信号,从而降低功耗和成本,与传统的香农-奈奎斯特采样过程相比。
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引用次数: 0
Design and Analysis of a parametric insensitive Direct Digitization scheme for Four-Wire Resistive Sensor 四线电阻传感器参数不敏感直接数字化方案的设计与分析
S. Sreejith, Philip V. Noel, B. Jacob, T. Latha, S. Athuladevi, B. Valsa
Design and analysis of a direct-digitization scheme for four-wire connected resistive sensors is detailed in this work. The basic principle involves computing the time-interval taken to store charge in a capacitor and the time taken to discharge it. The time interval is shown to be proportional to the value of unknown sensor resistance. The output of the scheme is a digital representation of the sensor analog value and is insensitive to circuit parameters like resistance of connecting wires, analog switch impedance or controller port resistance. The resistive sensor is directly connected to the controller through analog switches and hence has lesser number of components. Simulation of the proposed scheme indicates an overall error within 0.0022%. Emulation indicates an overall error within 0.031%. The paper also details the error analysis of the proposed scheme.
本文详细地设计和分析了一种四线连接电阻式传感器的直接数字化方案。基本原理包括计算在电容器中储存电荷所需的时间间隔和放电所需的时间。时间间隔显示为与未知传感器电阻的值成正比。该方案的输出是传感器模拟值的数字表示,对接线电阻、模拟开关阻抗或控制器端口电阻等电路参数不敏感。电阻式传感器通过模拟开关直接连接到控制器,因此元件数量较少。仿真结果表明,该方案的总体误差在0.0022%以内。仿真表明总体误差在0.031%以内。文中还详细分析了所提方案的误差。
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引用次数: 2
State and Disturbance Observer for Robust Motion Control 鲁棒运动控制的状态和扰动观测器
Ashitosh D. Chavan, Aniket D. Gundecha, Kaliprasad A. Mahapatro, Prasheel V. Suryawanshi
The paper proposes a combination of sliding mode control (SMC) strategy with state and disturbance observer (SDO) technique. In most of the applications all the states of the plant are not available for measurement. In that case SDO is used to estimate the plant states along with matched as well as mismatched uncertainties. The estimates of SDO is used in proposed control law to improve the output tracking. The proposed control can effectively regulate the motor speed, even in the presence of uncertainties and disturbances. Disturbance observer (DO) can estimate the matched as well as mismatched uncertainties in the plant. The proposed control is validated experimentally on DC Motor setup with MATLAB-Simulink.
本文提出了滑模控制(SMC)与状态与扰动观测器(SDO)技术相结合的控制策略。在大多数应用中,装置的所有状态都无法测量。在这种情况下,SDO用于估计工厂状态以及匹配和不匹配的不确定性。在所提出的控制律中,利用SDO的估计来改善输出跟踪。所提出的控制可以有效地调节电机的速度,即使存在不确定性和干扰。扰动观测器(DO)可以估计对象的匹配不确定性和不匹配不确定性。利用MATLAB-Simulink在直流电机上进行了实验验证。
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引用次数: 1
Satellite Tracking Using 7X7Hexagonal Phased Array Antenna 利用7x7六边形相控阵天线进行卫星跟踪
K. Vivek Raj, S. Ranjitha, V. Meghana, H. Preethi
Satellite communications positively impact everything we do. A large number of the more up to date satellites will be little and heavenly bodies will fly in Low Earth Orbit (LEO) and a significant number of these constellations will have vast amounts of satellites flying, adding noteworthy unpredictability to the communication applications. Placement of a steerable antenna array exhibiting higher directivity and increased gain in Low Earth Orbit adds to decreased ground station complexity, cost, and a reasonable budget still kept up. Beam steering antennas like phased array antennas are the ideal solution for the tracking of the satellite over full hemisphere coverage. Antennas deployed in ground station must continuously steer the beam towards satellite for continuous tracking till the signal from satellite falls below the threshold level. Antennas must have all its gain in a specific direction in order to achieve efficient tracking. This paper presents satellite tracking using phased array antenna. The proposed system comprises of hexagonal shaped 7x7 antenna array containing 37 elements having a triangular lattice structure is configured. Phased array antennas comprise of inbuilt phase shifters to get the constructive beam in the desired direction. Back lobe suppression method is used to nullify the beams in the undesired direction for efficient tracking of the satellite. A Scenario of satellite tracking is created with the required configurations and has been tested in terms of efficient tracking performance and the number of access from facility to satellite has been recorded.
卫星通信积极地影响着我们所做的一切。大量最新的卫星将很小,天体将在近地轨道(LEO)上飞行,这些星座中有相当数量的卫星将飞行,这给通信应用增加了值得注意的不可预测性。在低地球轨道上放置具有更高方向性和更高增益的可操纵天线阵列,增加了地面站的复杂性,成本和合理的预算。波束控制天线,如相控阵天线,是在全半球覆盖范围内跟踪卫星的理想解决方案。部署在地面站的天线必须不断地引导波束向卫星进行连续跟踪,直到卫星信号降至阈值以下。为了实现有效的跟踪,天线的增益必须集中在一个特定的方向上。本文介绍了一种利用相控阵天线进行卫星跟踪的方法。所提出的系统由六角形7x7天线阵列组成,其中包含具有三角形晶格结构的37个单元。相控阵天线由内置移相器组成,以获得所需方向的构造波束。为了有效地跟踪卫星,采用了后瓣抑制方法来消除非期望方向的波束。用所需的配置创建了一个卫星跟踪方案,并在有效跟踪性能方面进行了测试,记录了从设施到卫星的访问次数。
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引用次数: 1
Comparative Analysis of Wireless Power Transmission using Microwave 微波无线电力传输的对比分析
Shruti B. Deshmukh, A. Bhole, P. Kokil
Microwave Power Transfer (MPT) is the most encouraging technology in Wireless Power Transfer (WPT) for high-power long-range transmission and most importantly for the Space Solar Power Satellite (SSPS). In the future, SSPS will serve as a key renewable energy source. The review paper addresses brief history and the demonstration of MPT on the ground and in the space. Various features of MPT are also discussed in detail.
微波功率传输(MPT)是无线功率传输(WPT)中最具发展前途的大功率远程传输技术,对空间太阳能卫星(SSPS)具有重要意义。在未来,SSPS将成为关键的可再生能源。本文介绍了MPT的简史和在地面和空间上的演示。详细讨论了MPT的各种特性。
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引用次数: 1
期刊
2019 4th International Conference on Recent Trends on Electronics, Information, Communication & Technology (RTEICT)
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