Pub Date : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108143
C. Pomazan
In order to study the behavior of photovoltaic (PV) panels, controlled simulation of lighting conditions is a must. For the comparative analysis of the maximum power point tracking algorithms, these lighting conditions must be reproduced identically for each individual algorithm. This article proposes such a controlled lighting system that can be easily integrated into a more complex system for the study of PV panels. Due to size and energy consumption considerations, the solar simulator is sized for 20W photovoltaic panels, but it can be easily expanded for PV panels of higher power. The lighting control can be done manually or automatically, and the simulator operation can be independent or synchronized with other experimental measurement modules. In case of automatic operation, the simulator allows establishing and memorizing a lighting profile that can be played later individually or periodically. The simulator can generate step or ramp lighting variations that can be combined within the lighting profile for programmable time duration for each interval.
{"title":"Designing a Programmable Solar Simulator for the Study of Photovoltaic Panels","authors":"C. Pomazan","doi":"10.1109/ATEE58038.2023.10108143","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108143","url":null,"abstract":"In order to study the behavior of photovoltaic (PV) panels, controlled simulation of lighting conditions is a must. For the comparative analysis of the maximum power point tracking algorithms, these lighting conditions must be reproduced identically for each individual algorithm. This article proposes such a controlled lighting system that can be easily integrated into a more complex system for the study of PV panels. Due to size and energy consumption considerations, the solar simulator is sized for 20W photovoltaic panels, but it can be easily expanded for PV panels of higher power. The lighting control can be done manually or automatically, and the simulator operation can be independent or synchronized with other experimental measurement modules. In case of automatic operation, the simulator allows establishing and memorizing a lighting profile that can be played later individually or periodically. The simulator can generate step or ramp lighting variations that can be combined within the lighting profile for programmable time duration for each interval.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133951800","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 : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108298
Ciprian-Marian Stan, L. Scripcariu
Designing exceptional engineering study programs that cater to individual needs, provide adaptable learning paths, and enable easy and quick access to relevant educational resources and instructors is a complex and demanding task that must be resolved to ensure a bright future for engineering education. The laboratory plays a vital role in engineering and applied science education. As the internet and IT (Information technology - term that includes the development, installing and use of anything to do with computing and telecommunications) technologies have evolved and connected people globally, the development of virtual and remote laboratories has become inevitable. This innovation is beneficial for students enrolled in traditional classroom-based courses, as well as online or distance learning programs. Students can now extend or adjust their study time, thanks to the growing number of smart and portable devices that can connect to the internet. This convenience greatly facilitates their ability to manage their time and acquire self-directed learning skills, which will be helpful in their future careers. The flexibility and convenience offered by virtual and remote laboratories benefit educational institutions with limited funding as well, as they reduce maintenance expenses and enable universities to collaborate on experiments.
{"title":"Development of Secure Remote Connection for the Electronics Laboratory Based on Red Pitaya Board","authors":"Ciprian-Marian Stan, L. Scripcariu","doi":"10.1109/ATEE58038.2023.10108298","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108298","url":null,"abstract":"Designing exceptional engineering study programs that cater to individual needs, provide adaptable learning paths, and enable easy and quick access to relevant educational resources and instructors is a complex and demanding task that must be resolved to ensure a bright future for engineering education. The laboratory plays a vital role in engineering and applied science education. As the internet and IT (Information technology - term that includes the development, installing and use of anything to do with computing and telecommunications) technologies have evolved and connected people globally, the development of virtual and remote laboratories has become inevitable. This innovation is beneficial for students enrolled in traditional classroom-based courses, as well as online or distance learning programs. Students can now extend or adjust their study time, thanks to the growing number of smart and portable devices that can connect to the internet. This convenience greatly facilitates their ability to manage their time and acquire self-directed learning skills, which will be helpful in their future careers. The flexibility and convenience offered by virtual and remote laboratories benefit educational institutions with limited funding as well, as they reduce maintenance expenses and enable universities to collaborate on experiments.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":" 18","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113953290","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 : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108172
I. Guran, A. Florescu, L. Perisoara, M. Teodorescu, I. Bacîș, Alexandru Vasile
One of the most important steps in the circuit design is simulation, which is used to validate the circuit before the physical implementation. Simulation Program for Integrated Circuits Emphasis (SPICE) is a popular and accurate simulator where behavioral models of the circuits are needed in order to perform the simulation. Over the last decade, the digital and mixed-signal circuits have become the most encountered type of circuits, where the up and down counting operations are essential. There is a lot of research on up and down counters in the literature, but only the up-counting operation has been approached in SPICE until now. For this reason, in this article, an advanced down-counting operation modeling technique is proposed, which aims to model an any-number of bits down-counter accurately, focusing on eliminating the limitation given by the number of bits of a down-counter and providing a fast simulation time. The verification of the down-counter model is done using the SPICE-based simulator environment OrCAD Capture.
{"title":"Advanced Down-Counting Operation in SPICE","authors":"I. Guran, A. Florescu, L. Perisoara, M. Teodorescu, I. Bacîș, Alexandru Vasile","doi":"10.1109/ATEE58038.2023.10108172","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108172","url":null,"abstract":"One of the most important steps in the circuit design is simulation, which is used to validate the circuit before the physical implementation. Simulation Program for Integrated Circuits Emphasis (SPICE) is a popular and accurate simulator where behavioral models of the circuits are needed in order to perform the simulation. Over the last decade, the digital and mixed-signal circuits have become the most encountered type of circuits, where the up and down counting operations are essential. There is a lot of research on up and down counters in the literature, but only the up-counting operation has been approached in SPICE until now. For this reason, in this article, an advanced down-counting operation modeling technique is proposed, which aims to model an any-number of bits down-counter accurately, focusing on eliminating the limitation given by the number of bits of a down-counter and providing a fast simulation time. The verification of the down-counter model is done using the SPICE-based simulator environment OrCAD Capture.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122924416","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 : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108180
Doru-Daniel Cristea, N. Tanase, C. Balan
Bifurcating geometries are ubiquitous in many natural and engineered systems, ranging from air conditioning units to biological respiratory pathways. The study of such geometries is of paramount importance to ensure the optimal performance and functionality of the system under investigation. This study centers on the medical aspect, specifically, the bifurcating geometry of the human trachea. A 3D-printed model of a bifurcation with comparable dimensions to the trachea was utilized to perform a range of measurements and visualizations. The paper is dedicated to the experimental studies and numerical simulations of the airflow in a 3D bifurcation with a square section.
{"title":"Numerical and Experimental Study of the Airflow in a Square Section Bifurcation","authors":"Doru-Daniel Cristea, N. Tanase, C. Balan","doi":"10.1109/ATEE58038.2023.10108180","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108180","url":null,"abstract":"Bifurcating geometries are ubiquitous in many natural and engineered systems, ranging from air conditioning units to biological respiratory pathways. The study of such geometries is of paramount importance to ensure the optimal performance and functionality of the system under investigation. This study centers on the medical aspect, specifically, the bifurcating geometry of the human trachea. A 3D-printed model of a bifurcation with comparable dimensions to the trachea was utilized to perform a range of measurements and visualizations. The paper is dedicated to the experimental studies and numerical simulations of the airflow in a 3D bifurcation with a square section.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115536293","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 : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108394
L. Ichim, Razvan-Ionut Mitrica, D. Popescu
Melanoma represents one of the most aggressive and dangerous skin cancers, leading to mortality if not detected and treated in time. To help dermatologists in the early detection of melanoma, recently artificial intelligence techniques have been developed and systems based on neural networks are capable of detecting these lesions with high precision. The article proposes two implementations of such multi-network systems (assemblies of efficient neural networks) with good performance for melanoma detection from dermatoscopic images. The first model is one based on the fusion of the decisions of several neural networks considering the weights associated with the individual networks. The second model is one of Horizontal Voting based on the voting of some network models obtained from the basic networks, at various numbers of epochs. Both models give relatively good results, the last one having an accuracy of 94.06% in melanoma detection.
{"title":"Detection of Melanomas Using Ensembles of Deep Convolutional Neural Networks","authors":"L. Ichim, Razvan-Ionut Mitrica, D. Popescu","doi":"10.1109/ATEE58038.2023.10108394","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108394","url":null,"abstract":"Melanoma represents one of the most aggressive and dangerous skin cancers, leading to mortality if not detected and treated in time. To help dermatologists in the early detection of melanoma, recently artificial intelligence techniques have been developed and systems based on neural networks are capable of detecting these lesions with high precision. The article proposes two implementations of such multi-network systems (assemblies of efficient neural networks) with good performance for melanoma detection from dermatoscopic images. The first model is one based on the fusion of the decisions of several neural networks considering the weights associated with the individual networks. The second model is one of Horizontal Voting based on the voting of some network models obtained from the basic networks, at various numbers of epochs. Both models give relatively good results, the last one having an accuracy of 94.06% in melanoma detection.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115571196","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 : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108206
T. Paraschiv, D. Cochior, Ioana - Raluca Adochiei, Ruxandra Victoria Paraschiv, Cosmin Karl Bänicä, Felix Constantin Adochiei
This research aims to contribute to a better understanding of the neural processes behind cognitive and emotional processes. Current studies suggest that EEG wave analysis and related techniques have the potential to provide essential insights into mental and emotional processes and identify biomarkers of neuropsychiatric disorders. To obtain a comprehensive and nuanced view of cognitive and emotional activity, we utilized the asymmetry theory to investigate the associations between all types of EEG waves. This approach allowed us to understand better the interplay between various types of brain activity and their potential implications for cognitive and emotional processes.
{"title":"A Study on Cognitive and Emotional Processes Carried Out through EEG Wave Processing","authors":"T. Paraschiv, D. Cochior, Ioana - Raluca Adochiei, Ruxandra Victoria Paraschiv, Cosmin Karl Bänicä, Felix Constantin Adochiei","doi":"10.1109/ATEE58038.2023.10108206","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108206","url":null,"abstract":"This research aims to contribute to a better understanding of the neural processes behind cognitive and emotional processes. Current studies suggest that EEG wave analysis and related techniques have the potential to provide essential insights into mental and emotional processes and identify biomarkers of neuropsychiatric disorders. To obtain a comprehensive and nuanced view of cognitive and emotional activity, we utilized the asymmetry theory to investigate the associations between all types of EEG waves. This approach allowed us to understand better the interplay between various types of brain activity and their potential implications for cognitive and emotional processes.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114291888","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 : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108094
Veronica Opranescu, Irina Nedelcu, A. Ionita
Given the technology evolution and the introduction of the smart campus concept, this paper considers their impact on educational processes in the specialization of automation and industrial informatics. The goal was to study the characteristics implemented in existing systems and to create an application based on use cases defined in our faculty, for guidance and automation of students’ decisions in regard with their educational path. In order to apply smart campus concepts, we focused on administrative processes, like subjects’ exchange, with support from a virtual assistant designed to guide students through their decision activities. This also includes the generation of a personalized calendar for students and professors, based on their own timetable.
{"title":"Automating Students’ Decision Processes in a Smart Campus","authors":"Veronica Opranescu, Irina Nedelcu, A. Ionita","doi":"10.1109/ATEE58038.2023.10108094","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108094","url":null,"abstract":"Given the technology evolution and the introduction of the smart campus concept, this paper considers their impact on educational processes in the specialization of automation and industrial informatics. The goal was to study the characteristics implemented in existing systems and to create an application based on use cases defined in our faculty, for guidance and automation of students’ decisions in regard with their educational path. In order to apply smart campus concepts, we focused on administrative processes, like subjects’ exchange, with support from a virtual assistant designed to guide students through their decision activities. This also includes the generation of a personalized calendar for students and professors, based on their own timetable.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126943452","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 : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108352
Cerasela Cămui, V. Petre
Currently, there is a high demand of new energy sources that are easy to find and use. Water, made up of hydrogen and oxygen, is not a fossil fuel and is inexhaustible on our planet and everywhere in the universe. This common element is seen as the best renewable and non-polluting fuel on the planet. Ever since the beginning of the 20th century, a solution has been sought to use hydrogen instead of conventional fuels. This work proposes an optimized PWM adjustable current source, with a frequency corelated to the water dissociation frequencies. The current source was realized and tested for electrolysis.
{"title":"Obtaining Hydrogen Using PWM Controlled Constant Current Source","authors":"Cerasela Cămui, V. Petre","doi":"10.1109/ATEE58038.2023.10108352","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108352","url":null,"abstract":"Currently, there is a high demand of new energy sources that are easy to find and use. Water, made up of hydrogen and oxygen, is not a fossil fuel and is inexhaustible on our planet and everywhere in the universe. This common element is seen as the best renewable and non-polluting fuel on the planet. Ever since the beginning of the 20th century, a solution has been sought to use hydrogen instead of conventional fuels. This work proposes an optimized PWM adjustable current source, with a frequency corelated to the water dissociation frequencies. The current source was realized and tested for electrolysis.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"88 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126308310","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 : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108362
Silvian–Marian Petrica, Mihaela-Gabriela Boicu, Mihaela Vasluianu, G. Neculoiu
This paper aimed to develop an IoT gateway that takes data from a repository and transmits it to a PowerApps application. There the data is stored for users in tables and graphics and compared with information from other sources available inside the PowerApps. Moreover, due to the large data storage capacity as well as the connection to APIs we can see at any time of the day various meteorological information, but we can also compare them with those of the past.
{"title":"Raspberry Pi-based Remote and Real-time Monitoring of an IoT Gateway","authors":"Silvian–Marian Petrica, Mihaela-Gabriela Boicu, Mihaela Vasluianu, G. Neculoiu","doi":"10.1109/ATEE58038.2023.10108362","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108362","url":null,"abstract":"This paper aimed to develop an IoT gateway that takes data from a repository and transmits it to a PowerApps application. There the data is stored for users in tables and graphics and compared with information from other sources available inside the PowerApps. Moreover, due to the large data storage capacity as well as the connection to APIs we can see at any time of the day various meteorological information, but we can also compare them with those of the past.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131507239","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 : 2023-03-23DOI: 10.1109/ATEE58038.2023.10108185
C. Ciufudean, C. Buzduga
Given the timeliness of this thematic, we propose an automatic system with the help of which the user complies certain conditions so that the hours spent at the computer do not affect his health, taking into account the right distance from the monitor, the correct body position, the brightness of the ambient environment, as well as warning the user about the time optimal working time at the computer, office or reading time and recommending breaks at a certain time interval.
{"title":"Study Environment Automatic Monitoring","authors":"C. Ciufudean, C. Buzduga","doi":"10.1109/ATEE58038.2023.10108185","DOIUrl":"https://doi.org/10.1109/ATEE58038.2023.10108185","url":null,"abstract":"Given the timeliness of this thematic, we propose an automatic system with the help of which the user complies certain conditions so that the hours spent at the computer do not affect his health, taking into account the right distance from the monitor, the correct body position, the brightness of the ambient environment, as well as warning the user about the time optimal working time at the computer, office or reading time and recommending breaks at a certain time interval.","PeriodicalId":398894,"journal":{"name":"2023 13th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131854104","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}
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