2022 ELEKTRO (ELEKTRO)最新文献_第4页

Analysis of smart applications influence on public lighting systems 智能应用对公共照明系统的影响分析

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/ELEKTRO53996.2022.9803619

Peter Ďurana, Tibor Beťko, P. Drgona

引用次数: 0

Synthesizing the Sector Directional Pattern with Improved Quality Indicators 综合具有改进质量指标的行业定向模式

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/ELEKTRO53996.2022.9803718

A. Ostankov, Artem Nechaev, S. Dachian, T. Demina, A. Faulgaber, Kaungmyat San

{"title":"Synthesizing the Sector Directional Pattern with Improved Quality Indicators","authors":"A. Ostankov, Artem Nechaev, S. Dachian, T. Demina, A. Faulgaber, Kaungmyat San","doi":"10.1109/ELEKTRO53996.2022.9803718","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803718","url":null,"abstract":"It is not easy to provide the specified indicators of the sector directional pattern quality when a linear antenna array is used. This especially concerns the application of the synthesis methods based on the expansion of the pattern into a generalized Fourier series. The reasons for the deterioration of the sector pattern indicators lie in the use of a finite number of basis functions during the synthesis as well as in the limitedness in the space of the amplitude-phase distribution on the array aperture. The purpose of the paper is to show, with the help of the example of an equidistant antenna array, that the use of optimized pre-distortions of the template in the synthesis allows achieving improved indicators of the sector directional pattern. To provide pre-distortion, a template is proposed, one parameter of which determines the width, and another – the degree of smoothness of the pattern top. A small number of template parameters makes it possible, when optimizing it, to abandon the methods of evolutionary search and significantly simplify the synthesis procedure. Specific examples show that the use of optimized pre-distortions of the template allows achieving improved indicators of the sector directional pattern. So, one can significantly reduce the amplitude of front oscillations of the directional pattern top with its slopes remaining as steep as possible, and one can also achieve an exact match of the pattern width to the initially specified sector. The application of the presented synthesis technique makes it possible to design linear antenna arrays, allowing building the sector directional patterns with improved quality indicators.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123585593","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

Evaluation of accuracy of simulation model and real electrochemical cell based on LiFePO4 chemistry 基于LiFePO4化学的仿真模型与实际电化学电池的精度评价

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/ELEKTRO53996.2022.9803577

Marek Šimčák, M. Frivaldský

引用次数: 0

A Functional IoT-based System Design of the Connected University 基于物联网功能的互联大学系统设计

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/ELEKTRO53996.2022.9803800

S. Matuska, R. Hudec

引用次数: 0

Intelligent sleeve prototype for monitoring muscle activity 用于监测肌肉活动的智能袖原型

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/elektro53996.2022.9803474

M. Labuda, Julia Kafkova, I. Kralikova

引用次数: 0

Frequency Response of Smartphones at the Upper Limit of the Audible Range 智能手机在可听范围上限下的频率响应

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/ELEKTRO53996.2022.9803475

Veronika Hromadova, P. Kasak, R. Jarina, P. Brida

引用次数: 4

Overview of the Usability of Second-Life Batteries in Smart Distribution Grids 智能配电网中二次电池可用性综述

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/ELEKTRO53996.2022.9803780

Marek Rybárik, P. Braciník, Martina Kajanová

引用次数: 0

Education Innovation in the Field of Electric Power Engineering Considering New Trends in Power Network Automation and Management 考虑电网自动化与管理新趋势的电力工程领域教育创新

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/ELEKTRO53996.2022.9803526

Marek Höger, M. Regula, Martina Kajanová, P. Braciník

{"title":"Education Innovation in the Field of Electric Power Engineering Considering New Trends in Power Network Automation and Management","authors":"Marek Höger, M. Regula, Martina Kajanová, P. Braciník","doi":"10.1109/ELEKTRO53996.2022.9803526","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803526","url":null,"abstract":"Nowadays, power systems are facing significant changes, mainly related to the massive implementation of information and communication technologies (ICT). These technologies are enabling completely new possibilities for the power system operation. One of the key elements supporting the ICT development in power systems is the modern power apparatus interconnected with digital protection relays and control terminals, integrated into an intelligent substation control system. However, the building and design of such complex systems do not require only a deep knowledge of all the partial technologies from the future designers, technicians, and their operators. A deep understanding of all the interactions between power apparatus, intelligent control devices, control system, and operators is also needed. The abovementioned development in the power systems requires a redesign of the methods and especially the approach to the education of future graduates of electric power engineering. Future education must be focused on the ability of graduates to combine the knowledge from classic areas in power system engineering with their equivalents in cyberspace. To understand all the specifics of such a complex system, a possibility for students to see all the interactions in a real-world substation is needed. Since it is not often practical, the use of a system as close to reality as possible can be advantageous. Therefore, an integral part of the proposed new approach to education is also the building of a unique laboratory equipped with all the necessary hardware and software tools to provide students with a real hands-on experience with a modern intelligent medium voltage substation and its components.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"6 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113970818","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

The Algorithm for Systematic Formulation of State-Space Representation of Linear Circuits in the MATLAB Environment 线性电路状态空间表示的MATLAB系统表述算法

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/elektro53996.2022.9803437

Jakub Simcak, M. Frivaldský, M. Praženica

引用次数: 0

System for contactless monitoring of tissue perfusion 非接触式组织灌注监测系统

2022 ELEKTRO (ELEKTRO) Pub Date : 2022-05-23 DOI: 10.1109/ELEKTRO53996.2022.9803323

Patrik Procka, S. Borik

{"title":"System for contactless monitoring of tissue perfusion","authors":"Patrik Procka, S. Borik","doi":"10.1109/ELEKTRO53996.2022.9803323","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803323","url":null,"abstract":"The paper focuses on monitoring the cardiovascular system using photoplethysmography imaging. This technique allows the detection of slow and fast changes in skin blood perfusion. Based on the knowledge of previous studies, we present the customized design of the measurement setup, which consists of a light source, specific camera, and reference biosignal amplifier. Our measurement setup allows synchronous recording of image frames with reference signals, such as contact photoplethysmogram and respiration. These signals are an effective tool while handling the camera recorded data, which provide information about skin perfusion resulting from small color intensity changes in recorded images. The perfusion data are subsequently processed together with the synchronously measured contact photoplethysmogram. The algorithm calculates the cross-correlation function between the photoplethysmogram from the biosignal amplifier and signals extracted from recorded frames. We display results in color-coded maps containing the region of interest. The information derived from the measured data represents the blood volume changes. The main goal of the work is to prove the functionality of the proposed measuring setup.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128677483","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