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2019 International Conference on Robotics,Electrical and Signal Processing Techniques (ICREST)最新文献

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Incorporating Major Design Experiences for Electrical and Computer Engineering Undergraduate Students 结合电气与计算机工程专业本科生的专业设计经验
K. Meah
Designing, building, and testing are integral parts of an engineering degree program. Engineers are problem solvers and innovators who develop solutions for technical, societal, and commercial problems. Undergraduate engineering degree programs are the training ground to produce future engineers with appropriate knowledge and skills. This paper describes a process to incorporate major design experiences that prepares students for professional engineering practices. Design experience starts in the first semester and is an integral part of the curriculum throughout the four years. Students finish with major design experiences in their junior and senior years. ABET student outcomes are followed as guidelines while implementing design projects. Co-operative education with industries plays an important role by providing real-life engineering experiences to the undergraduate students.
设计、建造和测试是工程学位课程的组成部分。工程师是问题解决者和创新者,他们为技术、社会和商业问题开发解决方案。本科工程学位课程是培养具有相应知识和技能的未来工程师的训练基地。本文描述了一个过程,以结合主要的设计经验,准备学生的专业工程实践。设计经验从第一学期开始,是整个四年课程的一个组成部分。学生在他们的大三和大四完成主要的设计经验。在实施设计项目时,遵循ABET学生成果作为指导方针。与行业合作的教育通过为本科生提供实际的工程经验发挥了重要作用。
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引用次数: 0
Nano Thermoelectric Generator for Wireless & Biomedical Sensors 用于无线和生物医学传感器的纳米热电发电机
Toki Md. Tazwar
This paper proposes a nano energy harvester based on temperature gradient using thermoelectric materials. Thermoelectric generator (TEG) produces electrical energy from temperature difference. In this paper, the device is designed in planar geometrical shape for the ease of fabrication. Bi2Te3 is considered for p and n-type legs of thermoelectric generator due to its high seebeck coefficient. The thermocouple is designed in nano-scale (1nm, 1nm, 6nm) to miniaturize the energy harvester. The result shows an open circuit voltage of 4mV from a single thermocouple. The main scope of this designed device is to provide power to wireless, biomedical and IoT sensors which consumes less energy to operate. Simulation of this research work has been done in COMSOL Multiphysics.
提出了一种基于温度梯度的热电材料纳米能量采集器。热电发电机(TEG)利用温差产生电能。为了便于制作,本文将器件设计成平面几何形状。由于Bi2Te3具有较高的塞贝克系数,因此考虑将其用于热电发电机的p型和n型支腿。热电偶采用纳米级(1nm, 1nm, 6nm)设计,使能量采集器小型化。结果显示单个热电偶的开路电压为4mV。这种设计的设备的主要范围是为无线、生物医学和物联网传感器提供电力,这些传感器的运行能耗更低。本文的研究工作在COMSOL Multiphysics中进行了仿真。
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引用次数: 2
Bangla and English Text Cryptography Based on Modified Blowfish and Lempel-Ziv-Welch Algorithm to Minimize Execution Time 基于改进Blowfish算法和Lempel-Ziv-Welch算法的孟加拉文和英文文本加密
Shanjidah Akhter, Md. Badhan Chowdhury
The goal of this research is to provide data security without sacrificing data transfer speed especially for Bangla language in digital platforms such as e-commerce portals, online marketing, electronic banking, social media networks, mobile telecommunication etc. Different cryptography algorithms have been reviewed, and Blowfish and Lempel-Ziv-Welch (LZW) have been found suitable owing to various advantages. Blowfish, a symmetric block cipher algorithm, uses a variable-length key from 32 bits to 448 bits. It is unpatented, requires less memory to execute, fast, and simple to operate. The LZW algorithm is also simple to implement and works by building a dictionary adaptively. It is effective particularly against data loss. The implemented modified Blowfish algorithm is observed to be faster than LZW algorithm in terms of total time to encrypt and decrypt Bangla and English text. It is observed that modified Blowfish algorithm is the fastest (0.16ms) to encrypt Bangla text while LZW algorithm is the fastest (0.07ms) to decrypt Bangla text. It is also observed from inputting text of different packet size that on average Bangla text decryption is considerably slower than Bangla text encryption by modified Blowfish algorithm.
这项研究的目标是在不牺牲数据传输速度的情况下提供数据安全,特别是孟加拉语在电子商务门户、在线营销、电子银行、社交媒体网络、移动电信等数字平台上。对不同的加密算法进行了回顾,发现Blowfish和Lempel-Ziv-Welch (LZW)算法具有各种优点。Blowfish是一种对称分组密码算法,使用从32位到448位不等长的密钥。它没有专利,需要更少的内存来执行,速度快,操作简单。LZW算法也很容易实现,并且通过自适应构建字典来工作。它特别有效防止数据丢失。观察到实现的改进Blowfish算法在加密和解密孟加拉语和英语文本的总时间方面比LZW算法更快。观察到改进的Blowfish算法对孟加拉文加密最快(0.16ms), LZW算法对孟加拉文解密最快(0.07ms)。从输入不同包大小的文本中也可以观察到,使用改进的Blowfish算法对孟加拉文本进行解密的平均速度要比对孟加拉文本进行加密慢得多。
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引用次数: 5
Design and Implementation of a Three-Phase Inverter Operated with Different Conduction Modes 不同导通方式三相逆变器的设计与实现
Mohammad Halimur Rahman, Md Abdul Mannan, Muhammad Abdul Goffer Khan, Md. Rifat Ul Karim Shovon, Mohd Muinul Haq Mamun
Three phase inverters are widely used to control different industrial process. Power electronics based inverters are very popular for fast response and precise control. In this paper an IGBT based three phase power inverter is proposed. Conventional three different conduction modes of 1200, 1500 and 1800 have been adopted. Micro-controller based firing pulse generation circuit using a special multi-winding transformer and opt-coupler to apply isolated firing pulses for each IGBT has been developed and tested successfully. Simulation and test results of the inverter for three phase resistive as well as inductive loads have been presented. The test results are found to be in good agreement with the simulation outcome and also with the theoretical analysis. The main objective is to make an inverter with selectable conduction modes so that specific mode can be defined for resistive or reactive loads.
三相逆变器广泛用于各种工业过程的控制。基于电力电子的逆变器因其快速响应和精确控制而非常受欢迎。本文提出了一种基于IGBT的三相逆变器。采用了传统的1200、1500、1800三种不同的导通方式。利用专用的多绕组变压器和光耦合器,研制了一种基于微控制器的发射脉冲产生电路,并成功地对每个IGBT产生隔离的发射脉冲。给出了该逆变器在三相电阻负载和电感负载下的仿真和测试结果。试验结果与仿真结果和理论分析结果吻合较好。主要目标是制造一个具有可选择传导模式的逆变器,以便可以为电阻性或无功负载定义特定模式。
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引用次数: 5
On the Design of Effective EBG Structures to Model Highly Efficient Rectangular Patch Antenna for Wireless Applications 高效矩形贴片天线的有效EBG结构设计研究
M. Asaduzzaman, Reefat Inum, Md Sabbir Hossain, Muhammad Abdul Goffar Khan
The paper deals with relative analysis of radiation parameters of various rectangular patch antennas with quarter wave feed line. Star shaped and fan shaped Electromagnetic Band Gap (EBG) are incorporated separately on base plane of each antenna. Resonant frequency apprehended for the designed antennas is 5.25 GHz. The proposed fan shaped EBG based antenna exhibits a wide bandwidth of 244 MHz covering wireless applications like IEEE 802.11a Wireless Local Area Network (WLAN) (5.125–5.395 GHz) and High Performance Local Area Network type 1 (HIPERLAN/1) (5.150 GHz– 5.350 GHz). The antenna also covers a well portion of Worldwide interoperability for Microwave Access (Wi-MAX) (5.25-5.85GHz) with comparatively healthy gain of 7.15 dB and noteworthy radiation efficiency. Size reduction of patch with the installation of EBG structures has also been brought forward in this work. The design and simulation has been carried out using FDTD method based transient solver of CST MWS software.
本文对各种带四分之一波馈线的矩形贴片天线的辐射参数进行了相对分析。每个天线基面上分别加入星形和扇形电磁带隙(EBG)。所设计天线的谐振频率为5.25 GHz。所提出的扇形EBG天线具有244 MHz的宽带宽,可覆盖IEEE 802.11a无线局域网(WLAN) (5.125-5.395 GHz)和高性能局域网1 (HIPERLAN/1) (5.150 GHz - 5.350 GHz)等无线应用。该天线还覆盖了全球微波接入(Wi-MAX) (5.25-5.85GHz)互操作性的很大一部分,具有相对健康的7.15 dB增益和显著的辐射效率。本文还提出了通过安装EBG结构来减小贴片尺寸的方法。利用基于时域有限差分法的CST MWS软件暂态求解器进行了设计和仿真。
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引用次数: 6
Node Estimation Approach of Underwater Communication Networks Using Cross-correlation for Direct and Multi-path Propagation 水下通信网络直接和多径传播的互相关节点估计方法
Hasan Sarker, Md. Oli-Uz-Zaman, Imtiaz Hasan Chowdhury, S. A. Chowdhury, Md. Rabiul Islam
Counting the active node numbers is an essential parametric quantity as it is used for appraising the performance of a pragmatic network. Different conventional protocol based techniques can be used to determine this parametric quantity. However, these techniques have several limitations including protocol complexity in underwater environment due to the unique characteristics of underwater network such as long propagation delay, high error rate, non-negligible captures effect, dispersion, node mobility and high path loss. In order to evade those limitations a cross-correlation based node estimation approach is implicated. It is an alternative and a statistical approach for signal processing and it is also an efficient technique for any environment networks. In this piece of work, a node estimation technique is proposed by cross-correlating the received signals by four sensors for underwater networks. Nodes and sensors are considered as transmitters and receivers respectively. The aim of this work is to improve the estimation performance including accuracy compared to the performances of existing methods. Here, the performance is measured with respect to the comparison of coefficient of variance and error bar and it exhibits better performance comparing to the existing works.
统计活动节点数是评价实用网络性能的一个重要参数。可以使用不同的基于常规协议的技术来确定该参数量。然而,由于水下网络具有传输延迟长、错误率高、捕获效应不可忽略、分散、节点迁移和路径损耗大等特点,这些技术在水下环境下存在协议复杂性等局限性。为了避免这些限制,提出了一种基于互相关的节点估计方法。它是信号处理的一种替代和统计方法,也是一种适用于任何环境网络的有效技术。本文提出了一种水下网络中四个传感器接收信号相互关联的节点估计技术。节点和传感器分别被认为是发送器和接收器。这项工作的目的是提高估计性能,包括精度与现有方法的性能相比。这里通过方差系数和误差条的比较来衡量性能,与现有作品相比,表现出更好的性能。
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引用次数: 1
A Smart Auto-Balanced System for Incubation Process 一种孵化过程智能自动平衡系统
Md. Tarikul Islam Juel, Md Sajid Ahmed
Temperature and humidity are the main parameters to be controlled in a hatching system for incubation process. Maintaining of these highly sensitive natural elements is one of the major steps to breed healthy chicks in a hatching process. On the basis of providing an order of standardizing the operation and care to monitor the desired temperature and relative humidity, this paper proposes a system of incubation for the hatching of turkey birds. This incubation system is developed based on ATmega32A micro-controller using DHT22 temperature and humidity sensor. For monitoring purpose, LCD 20x4 display is used as well as an Android application. For the feature of user control system, button and Android application were used. This incubator is also very user-friendly and temperature and humidity can be calibrated externally if needed. And another purpose of this project is to make this incubation system affordable to all the people involved with hatchery farm.
在孵化过程中,温度和湿度是孵化系统需要控制的主要参数。保持这些高度敏感的自然元素是在孵化过程中培育健康小鸡的主要步骤之一。在提供规范操作和注意监测所需温度和相对湿度的命令的基础上,本文提出了一种用于火鸡孵化的孵化系统。本培养系统是基于ATmega32A单片机,采用DHT22温湿度传感器开发的。为了监控目的,使用LCD 20x4显示器以及Android应用程序。针对用户控制系统的特点,采用了按钮和Android应用程序。这个培养箱也非常用户友好,如果需要,温度和湿度可以在外部校准。这个项目的另一个目的是让所有参与孵化场的人都能负担得起这个孵化系统。
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引用次数: 0
An Effective Design of 2 : 1 Multiplexer and 1 : 2 Demultiplexer using 3-dot QCA Architecture 基于3点QCA架构的2:1复用器和2:1解复用器的有效设计
B. Das, Mou Mahmood, Maksuda Rabeya, Rajon Bardhan
Quantum dot Cellular Automata (QCA) is the modern trend in nanotechnology, which has been introduced to tackle the shortcomings of CMOS transistor based technology. In recent years, huge research has been performed to coincide the QCA based technology in designing digital logic circuits. In our paper, we proposed a 3-dot QCA based 2 : 1 Multiplexer (MUX) and 1 : 2 Demultiplexer (DEMUX) which has been designed and simulated. In this paper, we have shown the design of basic gates with 3-dot QCA and the design of MUX and DEMUX was done without any overlapping by using minimum gates. After comparing the proposed design with the most recent designs it has been found that a huge reduction in cell numbers and area can be achieved.
量子点元胞自动机(Quantum dot Cellular Automata, QCA)是当今纳米技术的发展趋势,旨在解决基于CMOS晶体管技术的缺点。近年来,人们对基于QCA的数字逻辑电路设计技术进行了大量的研究。本文提出了一种基于2:1多路复用器(MUX)和2:1解路复用器(DEMUX)的3点QCA,并对其进行了设计和仿真。在本文中,我们展示了3点QCA的基本门的设计,MUX和DEMUX的设计是用最小门来完成的,没有任何重叠。在将提出的设计与最近的设计进行比较后,发现可以实现细胞数量和面积的巨大减少。
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引用次数: 7
Comparative Study on Circular and Elliptical Microstrip Patch Antenna Arrays with Microstrip Line and Coaxial Probe Feeding for X-band x波段微带线馈电和同轴馈电的圆形和椭圆形微带贴片天线阵列的比较研究
Nazia Tasnim, Reefat Inum, Hasneara Khatun, M. A. Goffar Khan
A comparative performance study on circular and elliptical shape microstrip patch antennas and their arrays using different feeding techniques at an X band frequency is presented in this paper. The resonant frequency is chosen at 10 GHz which has a variety of application in wireless communication. CST Microwave Studio is used for design and simulation. It is found that microstrip line feeding shows better performance than coaxial probe feeding considering gain and directivity. A 3558.12 mm2 antenna having 2x4 array of circular patch with line feed that gives 16.2 dB gain and 16.4 dB directivity with 94.42% efficiency is the proposed model of this paper.
本文对圆形和椭圆形微带贴片天线及其阵列在X波段不同馈电方式下的性能进行了比较研究。谐振频率选择在10ghz,在无线通信中有多种应用。使用CST微波工作室进行设计和仿真。考虑增益和指向性,微带馈线比同轴探头馈线性能更好。本文提出了一种3558.12 mm2的天线模型,该天线具有2x4圆形贴片阵列和线馈,具有16.2 dB增益和16.4 dB指向性,效率为94.42%。
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引用次数: 2
Developing Charging Scheme for Electric Vehicles 制定电动汽车充电方案
Rahat Mahmud, T. Aziz
Electric Vehicles (EVs) are getting very popular in recent years. However, integrating large number of EVs into distribution system may violate system constraints. Adding even a few EV units in an isolated microgrid can cause problems such as excessive line loading and voltage drop. This may eventually lead to instability issues. This paper deals with these problems and proposes an EV charging scheme for an isolated grid without violating system constraints. Results show the significance of voltage stability index, voltage profile and State of Charge (SoC) on determining the capacity of charging station across each bus of the network.
近年来,电动汽车(ev)越来越受欢迎。然而,将大量电动汽车纳入配电系统可能会违反系统约束。即使在孤立的微电网中增加几个电动汽车单元也会导致线路负荷过大和电压下降等问题。这可能最终导致不稳定问题。针对这些问题,提出了一种不违反系统约束的孤立电网电动汽车充电方案。结果表明,电压稳定指标、电压分布和荷电状态(SoC)对确定网络各母线上充电站的容量具有重要意义。
{"title":"Developing Charging Scheme for Electric Vehicles","authors":"Rahat Mahmud, T. Aziz","doi":"10.1109/ICREST.2019.8644496","DOIUrl":"https://doi.org/10.1109/ICREST.2019.8644496","url":null,"abstract":"Electric Vehicles (EVs) are getting very popular in recent years. However, integrating large number of EVs into distribution system may violate system constraints. Adding even a few EV units in an isolated microgrid can cause problems such as excessive line loading and voltage drop. This may eventually lead to instability issues. This paper deals with these problems and proposes an EV charging scheme for an isolated grid without violating system constraints. Results show the significance of voltage stability index, voltage profile and State of Charge (SoC) on determining the capacity of charging station across each bus of the network.","PeriodicalId":108842,"journal":{"name":"2019 International Conference on Robotics,Electrical and Signal Processing Techniques (ICREST)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126067065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
2019 International Conference on Robotics,Electrical and Signal Processing Techniques (ICREST)
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