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Increasing WSN Lifetime using Clustering and Fault Tolerance Methods 利用聚类和容错方法提高WSN的生存期
Q2 Computer Science Pub Date : 2021-06-15 DOI: 10.37917/IJEEE.17.1.11
Saman Sabah, M. Croock
Energy consumption problems in wireless sensor networks are an essential aspect of our days where advances have been made in the sizes of sensors and batteries, which are almost very small to be placed in the patient's body for remote monitoring. These sensors have inadequate resources, such as battery power that is difficult to replace or recharge. Therefore, researchers should be concerned with the area of saving and controlling the quantities of energy consumption by these sensors efficiently to keep it as long as possible and increase its lifetime. In this paper energy-efficient and fault-tolerance strategy is proposed by adopting the fault tolerance technique by using the self-checking process and sleep scheduling mechanism for avoiding the faults that may cause an increase in power consumption as well as energy-efficient at the whole network. this is done by improving the LEACH protocol by adding these proposed strategies to it. Simulation results show that the recommended method has higher efficiency than the LEACH protocol in power consumption also can prolong the network lifetime. In addition, it can detect and recover potential errors that consume high energy.
随着传感器和电池尺寸的进步,无线传感器网络中的能量消耗问题是我们这个时代的一个重要方面,这些传感器和电池几乎非常小,无法放置在患者体内进行远程监控。这些传感器资源不足,例如电池电力难以更换或充电。因此,如何有效地节约和控制这些传感器的能耗,使其保持尽可能长的时间,延长其使用寿命,是研究人员应该关注的问题。本文提出了一种节能容错策略,采用容错技术,利用自检过程和睡眠调度机制来避免可能导致整个网络功耗增加的故障和节能。这是通过向LEACH协议中添加这些建议的策略来改进LEACH协议来实现的。仿真结果表明,该方法在功耗方面比LEACH协议具有更高的效率,并且可以延长网络的生存期。此外,它还可以检测和恢复消耗高能量的潜在错误。
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引用次数: 2
Encoding JSON by using Base64 使用Base64编码JSON
Q2 Computer Science Pub Date : 2021-06-15 DOI: 10.37917/IJEEE.17.1.4
Mohammed Shaamood
Transmitting binary data across a network should generally avoid transmitting raw binary data over the medium for several reasons, one would be that the medium may be a textual one and may not accept or correctly handle raw bitstream, another would be that some protocols may misinterpret the meaning of the bits and causes a problem or even loss of the data. To make the data more readable and would avoid misinterpretation by different systems and environments, this paper introduces encoding two of the most broadly used data interchange formats, XML and JSON, into the Base64 which is an encoding scheme that converts binary data to an ASCII string format by using a radix-64 representation. This process, will, make the data more readable and would avoid misinterpretation by different systems and environments.The results reflect that encoding data in Base64 before the transmission will present many advantages including readability and integrity, it will also enable us to transmit binary data over textual mediums, 7 Bit protocols such as SMTP, and different network hardware without risking misinterpretation.
在网络上传输二进制数据通常应该避免在媒体上传输原始二进制数据,原因有几个,一个可能是媒体可能是文本的,可能不能接受或正确处理原始比特流,另一个可能是一些协议可能误解比特的含义,导致问题甚至数据丢失。为了提高数据的可读性,避免不同系统和环境对数据的误读,本文将使用最广泛的两种数据交换格式XML和JSON引入Base64编码,Base64是一种使用基数64表示将二进制数据转换为ASCII字符串格式的编码方案。这个过程将使数据更具可读性,并避免被不同的系统和环境误解。结果表明,在传输前用Base64编码数据将呈现出可读性和完整性等诸多优点,它还将使我们能够在文本介质、7位协议(如SMTP)和不同的网络硬件上传输二进制数据,而不会有误解的风险。
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引用次数: 0
Non-conventional Cascade Multilevel Inverter with Lower Number of Switches by Using Multilevel PWM 基于多电平PWM的低开关数非常规级联多电平逆变器
Q2 Computer Science Pub Date : 2021-06-15 DOI: 10.37917/IJEEE.17.1.3
Adala Abdali, A. Abdulabbas, Habeeb J. Nekad
The multilevel inverter is attracting the specialist in medium and high voltage applications, among its types, the cascade H bridge Multi-Level Inverter (MLI), commonly used for high power and high voltage applications. The main advantage of the conventional cascade (MLI) is generated a large number of output voltage levels but it demands a large number of components that produce complexity in the control circuit, and high cost. Along these lines, this paper presents a brief about the non-conventional cascade multilevel topologies that can produce a high number of output voltage levels with the least components. The non-conventional cascade (MLI) in this paper was built to reduce the number of switches, simplify the circuit configuration, uncomplicated control, and minimize the system cost. Besides, it reduces THD and increases efficiency. Two topologies of non-conventional cascade MLI three phase, the Nine level and Seventeen level are presented. The PWM technique is used to control the switches. The simulation results show a better performance for both topologies. THD, the power loss and the efficiency of the two topologies are calculated and drawn to the different values of the Modulation index (ma).
多电平逆变器正吸引着中高压应用领域的专家,在其类型中,级联H桥多电平逆变器(MLI)通常用于高功率和高压应用。传统级联的主要优点是产生大量的输出电压电平,但它需要大量的元件,导致控制电路的复杂性和高成本。沿着这些思路,本文简要介绍了非传统级联多电平拓扑结构,该拓扑结构可以用最少的元件产生大量的输出电压电平。本文提出的非常规串级结构旨在减少开关数量、简化电路配置、控制简单、降低系统成本。此外,它降低了THD,提高了效率。提出了非常规级联MLI三相的两种拓扑结构,即9级和17级。采用PWM技术控制开关。仿真结果表明,两种拓扑结构都具有较好的性能。计算了两种拓扑的功率损耗和效率,并将其绘制为调制指数(ma)的不同值。
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引用次数: 1
Modeling and Control of Torsional Vibration in Rotating System Using Dual Loop Controllers 基于双环控制器的旋转系统扭振建模与控制
Q2 Computer Science Pub Date : 2021-06-15 DOI: 10.37917/IJEEE.17.1.2
Mustafa Matrood, A. Nassar
A torsional rotating system is considered for the investigation of passive vibration control using dual loop controllers Proportional-Integral-Derivative (PID) with derivative (D) gain and Proportional – Derivative (PD) with Integral (I) controllers. The controllers are used as low pass filters. Simulation of the models using Matlab-Simulink have been built in this work for torsional vibration control. A comparison between the two controllers with uncontrolled system have been carried out. Results show that the PD – I control is the best method which gives better stability response than the PID – D control.
以扭转旋转系统为研究对象,采用带导数(D)增益的比例-积分-导数(PID)和带积分(I)增益的比例-导数(PD)双环控制器进行被动振动控制。控制器用作低通滤波器。利用Matlab-Simulink对模型进行了扭振控制仿真。对两种控制器与非受控系统进行了比较。结果表明,PD - I控制比PID - D控制具有更好的稳定性响应。
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引用次数: 1
Stochastic Local Search Algorithms for Feature Selection: A Review 特征选择的随机局部搜索算法综述
Q2 Computer Science Pub Date : 2021-06-15 DOI: 10.37917/IJEEE.17.1.1
Hayder Naser Khraibet Al-Behadili
In today’s world, the data generated by many applications are increasing drastically, and finding an optimal subset of features from the data has become a crucial task. The main objective of this review is to analyze and comprehend different stochastic local search algorithms to find an optimal feature subset. Simulated annealing, tabu search, genetic programming, genetic algorithm, particle swarm optimization, artificial bee colony, grey wolf optimization, and bat algorithm, which have been used in feature selection, are discussed. This review also highlights the filter and wrapper approaches for feature selection. Furthermore, this review highlights the main components of stochastic local search algorithms, categorizes these algorithms in accordance with the type, and discusses the promising research directions for such algorithms in future research of feature selection.
在当今世界,许多应用程序生成的数据正在急剧增加,从数据中找到最优的特征子集已成为一项关键任务。本综述的主要目的是分析和理解不同的随机局部搜索算法,以找到最优的特征子集。讨论了在特征选择中常用的模拟退火、禁忌搜索、遗传规划、遗传算法、粒子群优化、人工蜂群、灰狼优化和蝙蝠算法。本文还重点介绍了用于特征选择的过滤器和包装器方法。此外,本文重点介绍了随机局部搜索算法的主要组成部分,并对这些算法进行了分类,讨论了这些算法在未来特征选择研究中的研究方向。
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引用次数: 1
Analysis of Losses in Cables and Transformers with Unbalanced Load and Current Harmonics 负载不平衡及电流谐波下电缆和变压器的损耗分析
Q2 Computer Science Pub Date : 2021-06-04 DOI: 10.11648/J.JEEE.20210903.13
Yunxia Dong, Yuefeng Shi
The power quality problems are more and more serious in the power system. The harmonics and the three-phase imbalance have a greater impact on the line loss of power grid. We focus on the power losses in cables and transformers with unbalanced load in current harmonics basing on the equivalent resistance method. The impact caused by the skin effect is illustrated in order to enhance the accuracy of the theoretical calculation. For this purpose, a mathematical development that takes in account the presence of current harmonic components and unbalanced load in the losses calculation is presented. The reliability of the method is verified in a simulation model. According to the comparative analysis between the simulation and the proposed method, we can conclude that the harmonic resistance calculation method considering skin effect is more accurate than the traditional method. The results show that the additional loss caused by the harmonics has a nonlinear relation with the harmonic currents. At the same time, the additional loss of distribution network under compound disturbance with unbalanced load in current harmonics is studied. Compared with the cases that two phase load are heavy and one phase load is light or one phase load is heavy and other two phase load are light, when one phase load is heavy, one phase load is light and one phase load is the average value of the others, the additional loss of the system is the least one. The additional loss for the case with that two phase load are heavy and one phase load is light is the biggest one.
电力系统中的电能质量问题越来越严重。谐波和三相不平衡对电网的线损影响较大。基于等效电阻法,研究了电流谐波中负载不平衡时电缆和变压器的功率损耗。为了提高理论计算的准确性,对集肤效应的影响进行了说明。为此,提出了一种考虑电流谐波分量和不平衡负载存在的损耗计算数学方法。仿真模型验证了该方法的可靠性。通过仿真与本文方法的对比分析,可以得出考虑集肤效应的谐波电阻计算方法比传统方法更准确。结果表明,谐波附加损耗与谐波电流呈非线性关系。同时,研究了电流谐波中负载不平衡复合扰动下配电网的附加损耗。与两相负荷重、一相负荷轻或一相负荷重、其他两相负荷轻的情况相比,当一相负荷重、一相负荷轻、一相负荷为其他各相负荷的平均值时,系统的附加损耗最小。两相负载较重、一相负载较轻情况下的附加损耗最大。
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引用次数: 2
Design and Testing of Building Integrated Hybrid Vertical Axis Wind Turbine 建筑一体化混合垂直轴风力机的设计与试验
Q2 Computer Science Pub Date : 2021-06-03 DOI: 10.11648/J.JEEE.20210903.12
Gwani Mohammed, A. Ibrahim, Umar Mohammed Kangiwa, Joshua Benjamin Wisdom
Building integrated wind turbine are considered as part of a group of technologies that are suitable for domestic micro-energy generation. Darrieus and Savonius turbines work efficiently in the urban environment at low wind speed, the Savonius rotor is self-starting and creates high torque but has low efficiency, while the Darrieus rotor is very efficient but does not self-start easily. Thus, the combination of these rotors as hybrid system would help to improve the overall efficiency of the wind turbines. The aim of this paper was to design, fabricate and experimentally investigate the performance of hybrid Vertical Axis Wind Turbine (VAWT) on residential buildings. A building model with gable rooftop was design and fabricated for use in testing of the hybrid VAWT. The height of the hybrid VAWT was paced at Y = 150 mm above the rooftop. The results obtained from the studies showed that the hybrid VAWT mounted on the building rooftop yield up to 63% more energy compared to the bare-hybrid VAWT (without building). Similar improvement in performance of the hybrid VAWT is also observed in the rotational speed, mechanical power and the coefficient of torque, where the building integrated hybrid VAWT outperformed the bare-hybrid VAWT. Thus the results indicate that urban buildings are suitable for the mounting of the hybrid VAWT.
建设一体化风力发电机被认为是适合国内微能源发电的一组技术的一部分。Darrieus和Savonius涡轮机在低风速的城市环境中高效工作,Savonius转子是自启动的,产生高扭矩,但效率低,而Darrieus转子效率很高,但不容易自启动。因此,这些转子的组合作为混合系统将有助于提高风力涡轮机的整体效率。本文的目的是设计、制造和实验研究混合垂直轴风力发电机(VAWT)在住宅建筑上的性能。设计并制作了一个带有山墙屋顶的建筑模型,用于混合VAWT的测试。混合VAWT的高度位于屋顶上方Y = 150 mm处。从研究中获得的结果表明,安装在建筑物屋顶的混合VAWT比裸混合VAWT(没有建筑物)多产生63%的能量。在转速、机械功率和扭矩系数方面,混合动力VAWT的性能也有类似的改善,其中建筑一体化混合动力VAWT的性能优于纯混合动力VAWT。结果表明,城市建筑适合安装混合式VAWT。
{"title":"Design and Testing of Building Integrated Hybrid Vertical Axis Wind Turbine","authors":"Gwani Mohammed, A. Ibrahim, Umar Mohammed Kangiwa, Joshua Benjamin Wisdom","doi":"10.11648/J.JEEE.20210903.12","DOIUrl":"https://doi.org/10.11648/J.JEEE.20210903.12","url":null,"abstract":"Building integrated wind turbine are considered as part of a group of technologies that are suitable for domestic micro-energy generation. Darrieus and Savonius turbines work efficiently in the urban environment at low wind speed, the Savonius rotor is self-starting and creates high torque but has low efficiency, while the Darrieus rotor is very efficient but does not self-start easily. Thus, the combination of these rotors as hybrid system would help to improve the overall efficiency of the wind turbines. The aim of this paper was to design, fabricate and experimentally investigate the performance of hybrid Vertical Axis Wind Turbine (VAWT) on residential buildings. A building model with gable rooftop was design and fabricated for use in testing of the hybrid VAWT. The height of the hybrid VAWT was paced at Y = 150 mm above the rooftop. The results obtained from the studies showed that the hybrid VAWT mounted on the building rooftop yield up to 63% more energy compared to the bare-hybrid VAWT (without building). Similar improvement in performance of the hybrid VAWT is also observed in the rotational speed, mechanical power and the coefficient of torque, where the building integrated hybrid VAWT outperformed the bare-hybrid VAWT. Thus the results indicate that urban buildings are suitable for the mounting of the hybrid VAWT.","PeriodicalId":37533,"journal":{"name":"International Journal of Electrical and Electronic Engineering and Telecommunications","volume":"36 1","pages":"69"},"PeriodicalIF":0.0,"publicationDate":"2021-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78733800","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: 1
Modeling and Simulation of Five-Phase Synchronous Reluctance Motor Fed By Five-Phase Inverter 五相逆变器供电的五相同步磁阻电机建模与仿真
Q2 Computer Science Pub Date : 2021-06-01 DOI: 10.37917/IJEEE.17.1.7
Namariq Ameen, A. Abdulabbas, Habeeb J. Nekad
Five-phase machine employment in electric drive system is expanding rapidly in many applications due to several advantages that they present when compared with their three-phase complements. Synchronous reluctance machines(SynRM) are considered as a proposed alternative to permanent magnet machine in the automotive industry because the volatilities in the permanent magnet price, and a proposed alternative for induction motor because they have no field excitation windings in the rotor, SyRM rely on high reluctance torque thus no needing for magnetic material in the structure of rotor. This paper presents dynamic simulation of five phase synchronous reluctance motor fed by five phase voltage source inverter based on mathematical modeling. Sinusoidal pulse width modulation (SPWM) technique is used to generate the pulses for inverter. The theory of reference frame has been used to transform five-phase SynRM voltage equations for simplicity and in order to eliminate the angular dependency of the inductances. The torque in terms of phase currents is then attained using the known magnetic co-energy method, then the results obtained are typical.
五相电机在电力驱动系统中的应用在许多应用中迅速扩大,因为它们与三相互补电机相比具有几个优点。由于永磁价格的波动,同步磁阻电机(SynRM)被认为是汽车工业中永磁电机的替代方案,同步磁阻电机(SynRM)被认为是感应电机的替代方案,因为它们在转子中没有励磁绕组,SynRM依靠高磁阻转矩,因此不需要在转子结构中使用磁性材料。在数学建模的基础上,对五相电压源逆变器供电的五相同步磁阻电机进行了动态仿真。采用正弦脉宽调制(SPWM)技术产生用于逆变器的脉冲。为了简化和消除电感的角依赖性,采用参考系理论对五相SynRM电压方程进行了变换。然后用已知的磁共能法获得了以相电流表示的转矩,然后得到了典型的结果。
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引用次数: 1
An Efficient Mechanism to Prevent the Phishing Attacks 防止网络钓鱼攻击的有效机制
Q2 Computer Science Pub Date : 2021-06-01 DOI: 10.37917/IJEEE.17.1.15
Mustafa Alzuwaini, A. Yassin
In the era of modern trends such as cloud computing, social media applications, emails, mobile applications, and URLs that lead to increased risks for defrauding authorized users, and then the attackers try to gain illegal access to accounts of users through a malicious attack. The phishing attack is one of the dangerous attacks caused to access of authorized account illegally way. The finances, business, banking, and other sensitive in states are faces by this type of attacks due to the important information they have. In this paper, we propose a secure verification scheme that can overcome the above-mentioned issues.Additionally, the proposed scheme can resist famous cyberattacks such as impersonate attacks, MITM attacks. Moreover, the proposed scheme has security features like strong verification, forward secrecy, user’s identity anomaly. The security analysis and the experimental results proved the strongest of the proposed scheme compared with other related works. Finally, our proposed scheme balanced between the performance and the security merits.
在云计算、社交媒体应用、电子邮件、移动应用、url等现代趋势的时代,导致欺骗授权用户的风险增加,然后攻击者试图通过恶意攻击非法访问用户的帐户。网络钓鱼攻击是通过非法方式访问授权账户而引起的危险攻击之一。国家的金融、商业、银行和其他敏感机构由于拥有重要信息而面临这种类型的攻击。在本文中,我们提出了一种安全的验证方案,可以克服上述问题。此外,该方案还可以抵御著名的网络攻击,如冒充攻击、MITM攻击。该方案具有强验证、前向保密、用户身份异常等安全特性。安全性分析和实验结果表明,与其他相关工作相比,该方案具有最强的安全性。最后,我们提出的方案在性能和安全优点之间进行了平衡。
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引用次数: 8
No Mobile Phobia Phenomenon _ A Review 没有手机恐惧症现象_回顾
Q2 Computer Science Pub Date : 2021-06-01 DOI: 10.37917/JEEE.17.1.6
S. Behadili, Hadeel Jabar, W. Tahlok, Safa Abdulsahib
The No Mobile Phone Phobia or Nomophobia notion is referred to the psychological condition once humans have a fear of being disconnected from mobile phone connectivity. Hence, it is considered as a recent age phobia that emerged nowadays as a consequence of high engagement between people, mobile data, and communication inventions, especially the smart phones.This review is based on earlier observations and current debate such as commonly used techniques that modeling and analyzing this phenomenon like statistical studies. All that in order to possess preferable comprehension concerning human reactions to the speedy technological ubiquitous. Accordingly, humans ought to restrict their utilization of mobile phones instead of prohibiting it, due to the fact that they could not evade the power of technological progression. In that matter, future perspectives would be employing data mining techniques to explore deep knowledge, which represents correlated relationshipbetween the human and the mobile phone.
“无手机恐惧症”或“无手机恐惧症”指的是人类害怕与手机断开连接的心理状态。因此,它被认为是一种最近的年龄恐惧症,是当今人们,移动数据和通信发明,特别是智能手机之间高度接触的结果。这篇综述是基于早期的观察和当前的争论,如常用的建模和分析这种现象的技术,如统计研究。所有这一切都是为了更好地理解人类对无处不在的快速技术的反应。因此,人类应该限制他们使用手机,而不是禁止它,因为他们无法逃避技术进步的力量。在这个问题上,未来的观点将是使用数据挖掘技术来探索深度知识,这代表了人与手机之间的相关关系。
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引用次数: 0
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International Journal of Electrical and Electronic Engineering and Telecommunications
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