Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803567
N. Tarjányi, D. Kacik
This paper deals with the influence of the magnetic field on the birefringence of a magnetic fluid. The 380µm thick layer of magnetic fluid is inserted between two crossed linear polarizers and illuminated by a white light source. Magnetic fields up to 60mT are applied to the magnetic fluid and the intensity of light passing through the magnetic fluid sample and polarizers is monitored. From the measured dependence of the spectral distribution of light intensity on the magnetic flux, the birefringence of the magnetic fluid is determined as a function of the magnetic flux B for different wavelengths and the dependence is compared with that following from the theory.
{"title":"Quantification of birefringence of magnetic fluid exposed to weak magnetic fields","authors":"N. Tarjányi, D. Kacik","doi":"10.1109/ELEKTRO53996.2022.9803567","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803567","url":null,"abstract":"This paper deals with the influence of the magnetic field on the birefringence of a magnetic fluid. The 380µm thick layer of magnetic fluid is inserted between two crossed linear polarizers and illuminated by a white light source. Magnetic fields up to 60mT are applied to the magnetic fluid and the intensity of light passing through the magnetic fluid sample and polarizers is monitored. From the measured dependence of the spectral distribution of light intensity on the magnetic flux, the birefringence of the magnetic fluid is determined as a function of the magnetic flux B for different wavelengths and the dependence is compared with that following from the theory.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"47 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":"132577803","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}
Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803377
A. Holesova, P. Sykora, P. Kamencay, M. Uhrina
In this paper, we present an effective convolutional classifier for recognition of visual artifacts. The proposed deep-learned model is simple in architecture and number of learnable parameters while retaining a sufficient generalization ability. The latter was achieved by compilation of extensive dataset based on ImageNet database. The model was trained sequentially on over 3 million images with 3 types of distortions with various severity, specifically 10 levels of Gaussian noise, 10 levels of Gaussian blur and 5 levels of blocking effect caused by JPEG compression. The model achieved excellent 99.88% accuracy on generated images. The performance of the model was evaluated on 4 well-known IQA datasets, where it reached 71.95% accuracy in average. Furthermore, after transferring the weights from the proposed model and short training on IQA datasets, its accuracy increased by more than 7%.
{"title":"Convolutional Neural Network for Visual Artifacts Classification","authors":"A. Holesova, P. Sykora, P. Kamencay, M. Uhrina","doi":"10.1109/ELEKTRO53996.2022.9803377","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803377","url":null,"abstract":"In this paper, we present an effective convolutional classifier for recognition of visual artifacts. The proposed deep-learned model is simple in architecture and number of learnable parameters while retaining a sufficient generalization ability. The latter was achieved by compilation of extensive dataset based on ImageNet database. The model was trained sequentially on over 3 million images with 3 types of distortions with various severity, specifically 10 levels of Gaussian noise, 10 levels of Gaussian blur and 5 levels of blocking effect caused by JPEG compression. The model achieved excellent 99.88% accuracy on generated images. The performance of the model was evaluated on 4 well-known IQA datasets, where it reached 71.95% accuracy in average. Furthermore, after transferring the weights from the proposed model and short training on IQA datasets, its accuracy increased by more than 7%.","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":"116645883","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}
Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803343
G. Cibira
This paper focuses on dynamic bandwidth allocation (DBA) system based on statistical approach. The aim of the proposed statistical DBA approach is to allocate telecommunications services (TS) to free telecommunications channels (TChs), outside of those occupied by sensing fiber Bragg gratings (FBGs). This FBGs occupation is caused by FBG sensing in Internet of Things (IoT) shared optical fiber line (OFL) of the passive optical network (PON). The proposed statistical DBA system is based on the detection of power in FBGs spectral peaks, applying various thresholding techniques. A robust FBGs occupancy matrix and TChs availability matrix are needed at an appropriate level of reliability, as a FBG often occupies more than one TCh. Coexistence is possible for TS and FBG sensing in the shared OFL along the optical C-band.
{"title":"Simplified statistical thresholding techniques for dynamic bandwidth allocation in shared Super-PON","authors":"G. Cibira","doi":"10.1109/ELEKTRO53996.2022.9803343","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803343","url":null,"abstract":"This paper focuses on dynamic bandwidth allocation (DBA) system based on statistical approach. The aim of the proposed statistical DBA approach is to allocate telecommunications services (TS) to free telecommunications channels (TChs), outside of those occupied by sensing fiber Bragg gratings (FBGs). This FBGs occupation is caused by FBG sensing in Internet of Things (IoT) shared optical fiber line (OFL) of the passive optical network (PON). The proposed statistical DBA system is based on the detection of power in FBGs spectral peaks, applying various thresholding techniques. A robust FBGs occupancy matrix and TChs availability matrix are needed at an appropriate level of reliability, as a FBG often occupies more than one TCh. Coexistence is possible for TS and FBG sensing in the shared OFL along the optical C-band.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"29 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":"123871873","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}
Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803477
Sebastian Ostkotte, Constantin Peters, F. Hüning, M. Bragard
This paper covers the use of the magnetic Wiegand effect to design an innovative incremental encoder. First, a theoretical design is given, followed by an estimation of the achievable accuracy and an optimization in open-loop operation. Finally, a successful experimental verification is presented. For this purpose, a permanent magnet synchronous machine is controlled in a field-oriented manner, using the angle information of the prototype.
{"title":"Design, Implementation and Verification of an Rotational Incremental Position Encoder based on the Magnetic Wiegand Effect","authors":"Sebastian Ostkotte, Constantin Peters, F. Hüning, M. Bragard","doi":"10.1109/ELEKTRO53996.2022.9803477","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803477","url":null,"abstract":"This paper covers the use of the magnetic Wiegand effect to design an innovative incremental encoder. First, a theoretical design is given, followed by an estimation of the achievable accuracy and an optimization in open-loop operation. Finally, a successful experimental verification is presented. For this purpose, a permanent magnet synchronous machine is controlled in a field-oriented manner, using the angle information of the prototype.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"32 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":"125093936","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}
Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803792
Kristian Takacs, M. Frivaldský
This paper provides an overview of an early attempt at developing a method of simulation for residential smart-grid (SG) based on the solid-state transformer (SST). The paper provides a theoretical review of the power converters under consideration as well as their control techniques. While PLECS (Piecewise Linear Electrical Circuit Simulation) models initially completed design verification and electrical properties investigation, synthesis provides recommendations on the optimal configuration of circuit topologies. As a result, this technique allows for the development of high-accuracy simulation models of smart-grid systems, allowing for the investigation of any operating situations at required power delivery. Power converter systems were adjusted for expected power levels included within a simulation of the entire DC smart-grid system for such a purpose. The proposed simulation model examines two alternative energy flow scenarios involving photovoltaics (PV), battery storage systems (BSS), and an AC grid, while evaluating power flow efficiency and qualitative indicators of the AC grid.
{"title":"Simulation design of residential smart-grid based on solid-state transformer","authors":"Kristian Takacs, M. Frivaldský","doi":"10.1109/ELEKTRO53996.2022.9803792","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803792","url":null,"abstract":"This paper provides an overview of an early attempt at developing a method of simulation for residential smart-grid (SG) based on the solid-state transformer (SST). The paper provides a theoretical review of the power converters under consideration as well as their control techniques. While PLECS (Piecewise Linear Electrical Circuit Simulation) models initially completed design verification and electrical properties investigation, synthesis provides recommendations on the optimal configuration of circuit topologies. As a result, this technique allows for the development of high-accuracy simulation models of smart-grid systems, allowing for the investigation of any operating situations at required power delivery. Power converter systems were adjusted for expected power levels included within a simulation of the entire DC smart-grid system for such a purpose. The proposed simulation model examines two alternative energy flow scenarios involving photovoltaics (PV), battery storage systems (BSS), and an AC grid, while evaluating power flow efficiency and qualitative indicators of the AC grid.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"29 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":"126135442","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}
Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803676
P. Karban, I. Petrášová, I. Doležel
The Mixture of Experts (MoE)–based approach is applied to verify the possibility of using surrogate models for searching the optima of complex multicriteria problems with constraints. This approach can successfully solve problems when the design space is limited by a higher number of constraints and traditional methods of Design of Experiments (DoE) in conjunction with one surrogate model are not able to partition the design space acceptably enough for further prediction. The methodology is tested on a well-known DC motor benchmark, where the electromagnetic and temperature fields were solved analytically, in a simplified form.
{"title":"DC Motor Benchmark with Prediction Based on Mixture of Experts","authors":"P. Karban, I. Petrášová, I. Doležel","doi":"10.1109/ELEKTRO53996.2022.9803676","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803676","url":null,"abstract":"The Mixture of Experts (MoE)–based approach is applied to verify the possibility of using surrogate models for searching the optima of complex multicriteria problems with constraints. This approach can successfully solve problems when the design space is limited by a higher number of constraints and traditional methods of Design of Experiments (DoE) in conjunction with one surrogate model are not able to partition the design space acceptably enough for further prediction. The methodology is tested on a well-known DC motor benchmark, where the electromagnetic and temperature fields were solved analytically, in a simplified form.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"15 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":"127714591","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}
Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803363
I. Kralikova, B. Babušiak, M. Labuda
The comfortable, accurate, and long-term monitoring in biomedical applications is assigned significant interest. The measurement by textile electrodes satisfies these properties, and for that reason, they are increasingly employed in medical and non-medical applications to measure signals such as electrocardiographic (ECG), electromyographic (EMG), or electroencephalographic (EEG) signals. This paper investigates three conductive textile materials with two different surface sizes and Ag/AgCl electrodes regarding skin-electrode interface impedance frequency dependency. One textile material is selected and tested for the ECG and EMG signal measurement based on the impedance measurement results. The resulting data are also compared with records measured using Ag/AgCl electrodes.
{"title":"Textile Electrodes for Bioelectrical Signal Measurement","authors":"I. Kralikova, B. Babušiak, M. Labuda","doi":"10.1109/ELEKTRO53996.2022.9803363","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803363","url":null,"abstract":"The comfortable, accurate, and long-term monitoring in biomedical applications is assigned significant interest. The measurement by textile electrodes satisfies these properties, and for that reason, they are increasingly employed in medical and non-medical applications to measure signals such as electrocardiographic (ECG), electromyographic (EMG), or electroencephalographic (EEG) signals. This paper investigates three conductive textile materials with two different surface sizes and Ag/AgCl electrodes regarding skin-electrode interface impedance frequency dependency. One textile material is selected and tested for the ECG and EMG signal measurement based on the impedance measurement results. The resulting data are also compared with records measured using Ag/AgCl electrodes.","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":"129716699","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}
Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803336
P. Kamencay, M. Benco, R. Hudec, P. Sykora, M. Paralic
The main goal of the paper is to develop and design an intelligent system for automatic conditional access in critical virologic situations. The detection of proper use of face-mask, touchless temperature measurement, and counting incoming/outcoming people for single or multiple entrance doors or gates are the main objectives of this system. Originality and innovativeness of the paper are already in the idea, to create a new generation of affordable guard systems based on artificial intelligence with an emphasis on the pandemic situation in the world. In this paper, we will describe relevant works that used deep learning in security with compliance with pandemic regulations in comparison with proposed solution. The proposed technology will enable the start of a new generation of guard systems based on artificial intelligence with an emphasis on the pandemic regulations. This will create space for innovative solutions in the security of buildings, shops, factories, public transport stations, airports, etc. The implementation of this technology can bring revolutionary changes in society in actual situation and in the future.
{"title":"The Intelligent System for Mask Detection using Deep Learning","authors":"P. Kamencay, M. Benco, R. Hudec, P. Sykora, M. Paralic","doi":"10.1109/ELEKTRO53996.2022.9803336","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803336","url":null,"abstract":"The main goal of the paper is to develop and design an intelligent system for automatic conditional access in critical virologic situations. The detection of proper use of face-mask, touchless temperature measurement, and counting incoming/outcoming people for single or multiple entrance doors or gates are the main objectives of this system. Originality and innovativeness of the paper are already in the idea, to create a new generation of affordable guard systems based on artificial intelligence with an emphasis on the pandemic situation in the world. In this paper, we will describe relevant works that used deep learning in security with compliance with pandemic regulations in comparison with proposed solution. The proposed technology will enable the start of a new generation of guard systems based on artificial intelligence with an emphasis on the pandemic regulations. This will create space for innovative solutions in the security of buildings, shops, factories, public transport stations, airports, etc. The implementation of this technology can bring revolutionary changes in society in actual situation and in the future.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"101 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":"124326517","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}
Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803793
Robert Plsicík, M. Danko
The expanding demands on automotive technology, particularly in terms of traffic security, are creating assumptions for the application of unique technologies that were originally developed for military or aviation use. This area is developed of a high research level mainly as know-how of corporate sector. As result, it is necessary to bring and disseminate information about the radar system research and to facilitate development in a wide scientific community, mainly in the communities where the issues of radars are in the beginning. Furthermore, the article establishes a foundation for the initial stages of research in this field. The purpose of this paper is to summarize the information gathered for use with the AWR1843 radar development board. The content of the article has the role of providing information for the facilitation of practical first steps in radar technology. The high complexity of the board increases the meaning of the article.
{"title":"Introduction to using mmWave Radar development board AWR1843","authors":"Robert Plsicík, M. Danko","doi":"10.1109/ELEKTRO53996.2022.9803793","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803793","url":null,"abstract":"The expanding demands on automotive technology, particularly in terms of traffic security, are creating assumptions for the application of unique technologies that were originally developed for military or aviation use. This area is developed of a high research level mainly as know-how of corporate sector. As result, it is necessary to bring and disseminate information about the radar system research and to facilitate development in a wide scientific community, mainly in the communities where the issues of radars are in the beginning. Furthermore, the article establishes a foundation for the initial stages of research in this field. The purpose of this paper is to summarize the information gathered for use with the AWR1843 radar development board. The content of the article has the role of providing information for the facilitation of practical first steps in radar technology. The high complexity of the board increases the meaning of the article.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"90 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":"131028130","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}
Pub Date : 2022-05-23DOI: 10.1109/ELEKTRO53996.2022.9803511
I. Melo
I outline an introduction to quantum mechanics particularly fitting the needs and the background of the students of photonics and electrooptics at a technical university.
我概述了量子力学的介绍，特别适合一所技术大学光子学和电学学生的需要和背景。
{"title":"Introduction to quantum mechanics for the students of Photonics","authors":"I. Melo","doi":"10.1109/ELEKTRO53996.2022.9803511","DOIUrl":"https://doi.org/10.1109/ELEKTRO53996.2022.9803511","url":null,"abstract":"I outline an introduction to quantum mechanics particularly fitting the needs and the background of the students of photonics and electrooptics at a technical university.","PeriodicalId":396752,"journal":{"name":"2022 ELEKTRO (ELEKTRO)","volume":"107 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":"128712136","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：