Volume 15, number 1, 2021. Print version and published papers:
Regular papers:
Copy citation: I. Smical and O. Chiver, Study on the Management of Electrical Equipment and Waste Electrical Equipment with PCB Content in Maramureș County, Romania, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 7-27, 2021.
Irina SMICAL1, Olivian CHIVER2, 1 Technical University of Cluj-Napoca, North University Centre of Baia Mare, Engineering of Mineral Resources, Materials and Environment Department, 62A Victor Babes str., 430083, Baia Mare, Romania, 2 Technical University of Cluj-Napoca, North University Centre of Baia Mare, Electrical, Electronic and Computer Engineering Department, 62A Victor Babes str., 430083, Baia Mare, Romania. irina.smical@irmmm.utcluj.ro, olivian.chiver@ieec.utcluj.ro
Keywords: Equipment and waste electrical equipment, transformer, capacitor, PCB, contamination
Abstract: This study highlights the management of electrical equipment and waste electrical equipment with PCB content inventoried in Romania. Because it is mandatory to phase out such equipment with concentrations of at least 50 ppm at a volume of more than 5 dm3 an assessment of the compliance with the requirements imposed by the specific legislation has been made. The results obtained from the statistical processing and interpretation of the data from the national inventory reveal that in Romania, the elimination process is slow and that are still important stocks of equipment with PCB content that must be eliminated. By the end of 2018, the rate of decontamination and disposal of this equipment and the quantities of oils with PCB content was below 25%. Currently, there is no national or county inventory of fluid-containing equipment with 0.005% to 0.05% PCB relative to fluid weight. In Maramureș County, there is no waste electrical equipment in the inventory with PCB content, but only capacitors in use. By the end of 2019, the rate of decontamination and disposal of these equipments at county level was below 15%.
AN ANALYTICAL APPROACH TO AM2 MODEL FOR BATCH ANAEROBIC BIOREACTORS
Copy citation: A. Zaatri, An Analytical Approach to AM2 Model for Batch Anaerobic Bioreactors, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 28-44, 2021.
Abdelouahab ZAATRI, Département de Génie Mécanique, Université de Constantine 1, Constantine, Algeria, azaatri@yahoo.com
Keywords: AM2 model, anaerobic bioreactors, differential equations, mathematical modeling
Abstract: The well-known AM2 model is commonly used for simulation of biotechnological processes of two-phases anaerobic digestions. Nevertheless, numerical simulation and graphical results usually obtained by solving the non-linear system of differential equations characterizing this model do not always enable an easy analysis of the processes as well their sensitivity to the variations of the different parameters and the initial conditions. In this paper, as an alternative to simulation, an analytical approach is proposed for batch reactors. It consists of adopting some approximations to reduce the mathematical complexity of the coupled differential equations of the AM2 model. The aim is to derive approximate analytical expressions concerning the dynamical evolution of the substrates and bacterias involved in reactions. The obtained expressions, therefore, permit a relatively easy analysis of the evolution of the main processes and their sensitivity to the different parameters and initial conditions. Moreover, it provides an explicit mathematical expression that enables to estimate the cummulative production of methane. The comparison of the obtained results by this proposed analytical approach to the numerical simulation of the AM2 model shows a satisfying qualitative convergence of the proposed approach to the AM2 model.
ANTI-SATURATION CASCADE GENERALIZED PREDICTIVE CONTROL APPLIED IN INDUCTION MOTOR
Copy citation: K. Khelifi Otmane, Anti-Saturation Cascade Generalized Predictive Control Applied in Induction Motor, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 45-57, 2021.
Khelifa KHELIFI OTMANE, Blida 1 University, Department of Automatic and Electrotechnic, B.P 270 Route de Soumâa, Blida, Algeria, khelifi_ot_uhbc@yahoo.fr
Keywords: Amplitude saturation, anti windup controller, generalized predictive control, induction motor control, Youla parameterization
Abstract: Owing to the physical limitations in the variable speed induction motor drives, the windup phenomenon appears and results in performance degradation when the speed controller output is saturated by the current limiter, this happens often when a large change in the speed reference occurs. This paper’s aim is to prevent the undesirable effects of the saturation controller by employing a retuned generalized predictive speed controller based on Youla parametrization. The synthesis of an initial GPC controller based on its polynomial equivalent structure is required in the first step. Then, thanks to the Youla parameterization, this controller is retuned considering these saturation constraints reflected on two specifications. The first is a frequency specification on the quadratic component of stator current response to the speed reference which assures a minimal control action in transient periods. And the second is a time domain constraint on the measured speed response to the speed reference that enforce the output response to be within an imposed envelope. These constraints are stated within a linear convex optimization problem. The simulation results proved the efficiency of the resulting predictive speed controller.
AN IoT BASED SMART HOME APPLIANCES SCHEDULING MANAGEMENT SYSTEM
Copy citation: M. M. Hoque, M. Chakraborty, J. Rudra, M. A. I. Mahmood, An IoT Based Smart Home Appliances Scheduling Management System, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 58-70, 2021.
Md Murshadul HOQUE, Mithun CHAKRABORTY, Joy RUDRA, Md Arif Iftekhar MAHMOOD, Department of Electrical and Electronic Engineering, University of Chittagong, 4331 Chittagong, Bangladesh, m.hoque@cu.ac.bd
Keywords: Smart scheduling, demand response, time of use, home energy management, IoT, home appliances
Abstract: This paper proposes a smart home appliance scheduling management (HASM) system based on demand response. An IoT based HASM system is developed to provide an efficient electricity consumption scheme to residential consumers for scheduling their appliances in a cost-effective way and smartly throughout a day. This smart load scheduler takes residential electricity users’ preferences to shift the appliances with deferrable characteristics at cost effective periods considering the user is aware of dynamic tariff information. The user interaction to the scheduling of loads provides maximum comfort level as well as saving of total electricity bill, and the effective utilization of demand response strategies to reduce peak hour electricity consumption. The results of this development indicate a reduction of daily energy consumption confirming the consumer comfort.
THE ENERGY ASSESMENT OF THE BUILDING SERVICES FACULTY OF CLUJ-NAPOCA
Copy citation: C. Ciugudeanu, The Energy Assesment of the Building Services Faculty of Cluj-Napoca, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 71-80, 2021.
Calin CIUGUDEANU, Lighting Engineering Laboratory, Technical University of Cluj-Napoca, Romania, calin.ciugudeanu@insta.utcluj.ro
Keywords: energy consumption, energy efficiency, LED lamps, sustainable lighting, green buildings
Abstract: Lighting Engineering Laboratory – LEL – is one of the major lighting independent consultants in the north-west side of Romania. The laboratory is affiliated to the Building Services Faculty of the Technical University of Cluj-Napoca. Over the past few years, the Lighting Engineering Laboratory carefully mapped the university’s energy use. To estimate the actual level of energy efficiency at our faculty we compared previous consumption data to obtain the trends of energy consumption. The paper presents the energy consumptions recorded for the Building Services Faculty of Cluj-Napoca. This should be the very first step to achieve the most appropriate energy efficiency solutions for the university’s buildings. Some lighting refurbishments were also tested as case studies. A new design for an active educational building that will produce more energy that it consumes – was proposed. The present paper tries to determine the detailed aspects of the building energy consumption, proposing at the same time some energy efficiency solutions economically viable for the most educational buildings in the Eastern Europe.
HYBRID EQUIVALENT CIRCUIT GENERATION
Copy citation: Mihaela Grib, Ionela Vlad, O. D. Lăudatu, A. R. Grib, M. Iordache, Hybrid Equivalent Circuit Generation, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 81-93, 2021.
Mihaela GRIB, Ionela VLAD, Ovidiu Dorin LĂUDATU, Alexandru Radu GRIB, Mihai IORDACHE, University Politehnica of Bucharest, Romania, mihaelagrib@yahoo.com, ionela.vlad@gmx.com, ovidiu.laudatu@yahoo.com, AlexandruRGrib@eaton.com, mihai.iordache@upb.ro
Keywords: Hybrid equivalent circuit, model H ~ nullified, polarization process, single-port and multi-port networks
Abstract: The main objective of this paper is to correctly define the hybrid equivalent circuits. These circuits allow the separation of the linear portions of electronic circuits from the nonlinear ones and in this way the polarization process of electronic devices becomes much more efficient. When linear and/or nonlinear analyzed circuits have a small number of nonlinear circuit elements, their analysis, synthesis, and simulation are performed more efficiently if the nonlinear part of circuit is separated from the linear one. A new modeling technique, called H ~ modeling, is introduced for multi-port networks. It is shown that H ~ models are more dynamic compared to equivalent Thevenin or Norton circuits and have the ability to describe port behavior more accurately. A special type of model H ~ is also introduced, called model H ~ nullified, or simply model H ~ and many properties of H modeling are investigated, including circuit energy management. It is shown that the H models are not limited to single-port networks, but also cover multiport. A major property of H modeling is the local polarization of transistors. It separates the nonlinear components from the linear portion of circuit for faster and more efficient polarization of circuit. Here a designer can take advantage of H-modeling and bias individual transistors (or in combinations) with no need to perform the normal circuit biasing. The proposed strategy separates linear and nonlinear portions of an analog circuit and takes more control of nonlinear portions. This separation of portions (components) of circuit is achieved by introducing a new port model that cancels the ports of nonlinear devices. In turn, this leads to a new technique for polarizing nonlinear components. This separation of portions (components) within the circuit is accomplished by introducing a new port modeling that nullifies the ports of nonlinear devices.
Copy citation: C. Ciugudean, D. Beu, Passive Tubular Daylight Guidance Systems Energy Saving Potential for the Residential Buildings in Romania, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 94-104, 2021.
Calin CIUGUDEANU, Dorin BEU, Lighting Engineering Laboratory, Technical University of Cluj-Napoca, Romania, calin.ciugudeanu@insta.utcluj.ro
Keywords: sunpipe, energy efficiency, daylight guidance systems, sustainable lighting, daylight
Abstract: Traditional vertical window can provide adequate daylight within about six meters of the window. Daylight levels decrease asymptotically with distance from the window so that a disproportionate amount of daylight/solar gain must be introduced into the front of the room to achieve small increases in daylight at the back. Tubular daylight guidance systems (TDGS) are linear devices that channel daylight into the core of a building. These consist of a light transport section with, at the outer end, some device for collecting natural light and, at the inner end, a means of distribution of light within the interior. The nature of the systems and the factors influencing the costs and various benefits that contribute value are identified. Lighting systems in residential buildings, lit by electric lighting and daylight guidance, were surveyed. Data on the physical characteristics of the systems and lighting conditions achieved were collected. The results formed the input to a cost and value analysis which permitted the economic limits of the systems to be evaluated. Some estimations were made about the energy savings and the environmental benefits of those lighting systems.
7th International Conference INNOVATIVE IDEAS IN SCIENCE 2021, 25-26th November 2021, Banja Luka, Bosnia and Herzegovina – Selected papers by the IIS Scientific Committee:
ENERGY EFFICIENCY CONTROLLED BY ARDUINO MODULES
Copy citation: C. Barz, Z. Erdei, O. Onysko, P. Tamas, A. Pop, T. Ungureanu, Energy Efficiency Controlled by Arduino Modules, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 113-120, 2021.
Cristian BARZ1, Zoltan ERDEI1, Oleh ONYSKO2, Paul TAMAS1, Andreea POP1, Teodora UNGUREANU3, 1 Technical University of Cluj-Napoca, Department of Electrical, Electronic and Computer Engineering Romania, 2 Ivano-Frankivsk National Technical University of Oil and Gas, Department of the Computerized Machine Building, Ukraine, 3 The National Institute for Research and Development in Constructions, Urbanism and Sustainable Spatial Development URBAN-INCERC, Bucharest, Romania, cristian.barz@ieec.utcluj.ro
Keywords: energy management, monitoring, Arduino modules, sensor, energy efficiency
Abstract: To control and reduce energy consumption, it demands to install a network of sensors and using a dashboard to monitoring data acquisition from its. Energy monitoring is necessary to keep track of energy consumption according to the season, weather conditions and the flow of use of electrical appliances in the institution. The paper presents an approach for monitoring energy efficiency base on Arduino modules (smart-MAC) through a dashboard application. Dashboard WEB application has the advantage of leting the user a flexible indicator and chart widgets configuration for create an unlimited number of boards and devices connected to the same account. To realize an efficiency use of energy in public institution the date is analyze and on results can be take measurements for it.
TECHNOLOGICAL AND MANAGEMENT SOLUTIONS TO PREVENT EMERGENCIES AT OIL AND GAS FACILITIES
Copy citation: T. Yatsyshyn, L. Shkitsa, M. Lyakh, V. D. Liakh, Technological and Management Solutions to Prevent Emergencies at Oil and Gas Facilities, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 121-130, 2021.
Teodoziїa YATSYSHYN1, Lesya SHKITSA2, Mikhaylo LYAKH 3, Vasyl-Danylo LIAKH4, 1 Ivano-Frankivsk National Technical University of Oil and Gas, Department of Environmental Protection Technology, Ivano-Frankivsk, Ukraine, 2Ivano-Frankivsk National Technical University of Oil and Gas, Engineering and Computer Graphics Department, Ivano-Frankivsk, Ukraine, 3 Ivano-Frankivsk National Technical University of Oil and Gas, Oil and Gas Equipment Department, Ivano-Frankivsk, Ukraine, 4 Technical University of Kosice, Faculty of Manufacturing Technologies, Presov, Slovac Republic, teodoziia.yatsyshyn@nung.edu.ua
Keywords: emergency, oil and gas, environment, defectoscopy
Abstract: Oil and gas production is accompanied by technological processes that can pose a significant threat to the environment. The analysis of conditions of occurrence of ecologically dangerous emergency situations in oil and gas production branch is presented. This became the basis for the formation of a technical solution to increase the environmental safety of hydrocarbon production processes. The system of diagnostics of the equipment for rejection of rods is improved. The main purpose of improving the rod magnetic flaw detector was to reduce emergencies with the rods of deep pumping units by rejecting the rods with defects. The improvement of the rod magnetic flaw detector was to reduce the scattering of the magnetic field in order to improve the quality of flaw detection. The use of this device will prevent accidents, which are accompanied by energy and resource costs, as well as causing environmental pollution by fluids. Based on the above research results the management model of environmental safety of oil and gas well is suggested.
RISKS ON AQUATIC ENVIRONMENT RELATED TO WASTE OF PRINTED CIRCUIT BOARDS (PCBs)
Copy citation: I. Smical, Risks on Aquatic Environment Related to Waste of Printed Circuit Boards (Pcbs), Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 131-139, 2021.
Irina SMICAL,North University Centre of Baia Mare, Technical University of Cluj-Napoca, Engineering of Mineral Resources, Materials and Environment Department, 62A, Victor Babes str, 430083, Baia Mare, Romania, irina.smical@irmmm.utcluj.ro
Keywords: printed circuit board (PCB), WEEE, risk, heavy metals, aquatic
Abstract: Integrated circuit boards are component of most Waste Electrical and Electronic Equipment (WEEE). These are generated worldwide at an alert rhythm and their recycling is done to a small extent (about 20%). The paper presents an experimental simulation of the presence of printed circuit board waste (PCBs), from end-of-life computers, in three aquatic environments with different pH (pH 4.00, pH 5.63 and pH 8.00). After stagnation for 17 weeks, values of the concentrations of heavy metals released by the PCBs in the solutions were obtained. These indicated that the presence of these boards in aquatic media may impair water quality by inducing moderate risks for surface water and lower risks for groundwater bodies. Heavy metals such as copper and lead, especially in acidic and neutral environments, fell into the worst quality class for surface water and exceeding of the maximum allowable value for the reference groundwater body (ROSO12) were recorded for copper in the acid and neutral initial solutions.
ROMANIAN-UKRAINIAN TRANS-BORDER ACADEMIC DEVELOPMENT FOR RESEARCH AND INNOVATIONS
Copy citation: L. Shkitsa, A. Dascalescu, C. Barz, V. Kornuta, Romanian-Ukrainian Trans-Border Academic Development for Research and Innovations, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 140-149, 2021.
Lesya SHKITSA1, Anamaria DASCALESCU2, Cristian BARZ3, Volodymyr KORNUTA1, 1 Ivano-Frankivsk National Technical University of Oil and Gas, Engineering and Computer Graphics Department, Ivano-Frankivsk, Ukraine, 2 Technical University of Cluj-Napoca, North University Center of Baia Mare, Romania ,3 Association Academic Organization for Research, Innovation and Professional Development, Baia Mare, Romaniashkitsa@gmail.com
Keywords: technical education, innovation development, student project groups, DIY ideology
Abstract: Establish a communication environment between Ukrainian and Romanian Partners – universities and NGO – with regional companies to use joint academicals research and innovation potential for real needs of companies, to improve exchange of good practice, the opportunities for cooperation over innovations. The ways of implementation of the project-oriented training principles in the technical university are presented, which will allow to actively involve students in scientific and innovative activities within the educational process and the performance of qualification work. The ways of increasing the innovative activity of engineering specialties students, which are proposed, include: Center of Innovation Development, equipped with modern technologies machine and tools, the researchers and students, who are able to create mockups and prototypes of their projects; database, which contains registration of companies needs of development and innovation, connects universities with economical actors; the information system, which provides documentary support to researchers and students’ activities. This model of work allows the creation of associations, including cross-border, between different universities depending on the scope of tasks and the level of opportunities for implementation of decisions. The main results of the implementation of the international grant project RoUaTADRI “Ro-Ua Trans-border Academic Development for Reseach and Innovation” in the framework of the cross-border cooperation program Romania-Ukraine 2014-2020 are presented.
DISCUSSING EMPLOYABILITY SKILLS IN ENGINEERING HIGHER EDUCATION
Copy citation: L. Todea, A. Fălăuș, R. Demarcsek, Discussing Employability Skills in Engineering Higher Education, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 150-158, 2021.
Luminița TODEA, Anamaria FĂLĂUȘ, Ramona DEMARCSEK, Technical University of Cluj- Napoca; Faculty of Humanities, Baia Mare, luminitatodea@yahoo.com
Keywords: employability skills, professional communication, Engineering higher education
Abstract: The employability of graduates has become an issue that countries around the world have imposed on their national higher education systems to varying extents. Acquiring effective employability skills becomes increasingly important for both employers and employees in the field of engineering. Employers generally see a graduate’s achievements related to the subject discipline as necessary but not sufficient for them to be recruited. Achievements outside the boundaries of the discipline, the so-called soft skills, are generally considered to be relevant in the recruitment of graduates. A certain level of awareness among engineering undergraduates should be addressed regarding lacking or mismatching specific soft skills required in their potential workplace context. Therefore, the purpose of the article is to identify and discuss engineering students’ perception on the importance of employability skills such as: communication skills, problem solving and interpersonal skills so that they should overcome problems in getting suitable jobs in the future.
CONCRETE STATION AUTOMATION APPLICATION USING EASYSOFT
Copy citation: A. C. Pop, P. Tamas, C. Barz, A. Nechita, Concrete Station Automation Application Using Easysoft, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 159-165, 2021.
Andreea Cristina POP1, Paul TAMAS1, Cristian BARZ1,Alina NECHITA2, 1 Technical University of Cluj-Napoca,Department of Electrical, Electronic and Computer Engineering, 2 Technical University of Cluj-Napoca, Psychopedagogical Specialty Department, andreeapop05@yahoo.com
Keywords: Easy-soft, Programmable logic controller, Easy819-DC-RC, automation
Abstract: The paper presents the automation of a concrete plant, with the help of PLCs (programmable logic controller). For the development of the development program, we used EASY -SOFT, which allows the use of different types of relays such as: EASY 500, EASY 700 and EASY 800. In the works we exemplified five automations of the most important processes underlying a concrete plant.
ENVIRONMENTAL IMPACT OF MICRO-HYDROPOWER – A PURELY ROMANIAN PERSPECTIVE
Copy citation: B. V. Cioruța, M. Șteț, M. Coman, Environmental Impact of Micro-Hydropower – A Purely Romanian Perspective, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 166-172, 2021.
Bogdan-Vasile CIORUȚA1,3, Mihaela ȘTEȚ2, Mirela COMAN2,3, 1Technical University of Cluj-Napoca – North University Center of Baia Mare, Department of Informatics – Office of Informatics, 62A Victor Babeș, 430083, Baia Mare, Romania, 2Technical University of Cluj-Napoca – North University Center of Baia Mare, Faculty of Engineering, 62A Victor Babeș, 430083, Baia Mare, Romania, 3University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca,Doctoral School – Agricultural Eng. Sciences, 3-5 Calea Mănăștur, 430372, Cluj-Napoca, Romania, Bogdan.Cioruta@staff.utcluj.ro
Keywords: environmental monitoring, hydropower plants, environmental impact, energy
Abstract: The construction and commissioning of micro-hydropower plants is a solution for obtaining cheap electricity, but it also has a not negligible impact on the environment. Romania, like any of the member states of the European Union, has committed itself to a share of energy, in the sense of obtaining electricity in the most environmentally friendly way possible. Micro-hydropower plants also fall into this category. From our point of view, their construction started with too much exuberance because we not only have some European rules that we must obey about the green energy quota, but we also have some European rules provided by directives that refer to the protection of ecosystems. And then we must judge a balance between getting the share of green energy we are committed to, but at the same time protecting our ecosystem. We have synthesized, reported, and analyzed the impact of micro hydropower plants according to good practice guidelines aimed at the harmonious development of communities about nature.
WHEN DOES THE USE OF TECHNOLOGY IN THE EDUCATIONAL PROCESS BECOME TOO MUCH?
Copy citation: R. Demarcsek, L. Todea, A. Fălăuș , When Does the Use of Technology in the Educational Process Become Too Much?, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 173-187, 2021.
Ramona DEMARCSEK, Luminița TODEA, Anamaria FĂLĂUȘ, Technical University of Cluj-Napoca, North University Centre of Baia Mare, ramona.demarcsek@fsc.utcluj.ro, luminitatodea@yahoo.com, anamaria.falaus@fsc.utcluj.ro
Keywords: (smart) technology, electronic devices, online learning
Abstract: The current global situation brought about by the recent pandemic, has wreaked havoc through educational systems worldwide. From the traditional face-to-face interaction during the educational process, we were all suddenly faced with the daunting task of teaching online, and we all had to learn on the go. So, we adapted, teachers and students alike, and in this process, we unexpectedly found ourselves bombarded with various videoconferencing platforms, eLearning platforms, applications meant to make the teaching-learning process easier and smoother, and a wide range of devices on which all these platforms and apps could run. In this article we are analysing the results of a survey taken by a sample of 202 students from our university in an attempt to provide an answer to the question of when technology in the educational process becomes too much.
OPTIMIZING THE CMM CONTROL PROCESS OF AIRCRAFT FRAMES
Copy citation: M. Cosma, D. Darabă, N. Gașpar, Optimizing the CMM Control Process Of Aircraft Frames, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 188-193, 2021.
Marius COSMA1, Dinu DARABĂ1, Norbert GAȘPAR2, 1 Technical University of Cluj-Napoca North University Center of Baia Mare, Romania, 2 Universal Alloy Corporation Europe, Dumbrăvița, Romania, marius.cosma@imtech.utcluj.ro, dinu.daraba@imtech.utcluj.ro, norbert.gaspar@universalalloy.com
Keywords: aircraft structure, aircraft frames, aircraft manufacture, CMM control, modular device, sliding assembly, optimize, low cost
Abstract: The paper presents the optimization of the control process of a family of complex aircraft parts by designing a modular device for the CMM (coordinate measuring machine), how to assemble the elements, how to align the device on the machine table and the presentation of real advantages and disadvantages regarding the designed device.
USING THE WEINTEK HMI IN SMART HOME CONTROL
Copy citation: M. A. Lihet, C. Barz, Using yhe Weintek HMI in Smart Home Control, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 194-202, 2021.
Mihaela-Anamaria LIHET1, Cristian BARZ1, 1 Technical University of Cluj-Napoca, Department of Electrical, Electronic and Computer Engineering, mihaela.lihet@ieec.utcluj.ro, Cristian.BARZ@ieec.utcluj.ro
Keywords: smart home, HMI, automatization, Weintek, home automation
Abstract: The importance of smart homes is growing rapidly due to growing industrial demand. One of the main goals of a smart house is to make our daily lives easier by increasing the level of comfort. This paper presents the process of designing an interface of a smart home through which we can control certain devices and features of the house such as: lighting, alarm and surveillance system, outlets, air conditioning system and so on. The application was made using the EasyBuilder Pro software. The great thing about Weintek screens is that they are compatible with a multitude of PLCs, and due to their modern appearance, it is easy to include them in the interior design of a home. Smart homes will gain massive popularity in the future as current trends indicate that they are becoming the center of smart services consumption.
TRANSFORMATION OF TELLER/COUNTER SERVICES USING MODERN MOBILE DIGITAL INFORMATION TECHNOLOGIES
Copy citation: M. Sajić, D. Bundalo, Ž. Vidović, Z. Bundalo, D. Lalić, L. Sajić, Transformation of Teller/Counter Services Using Modern Mobile Digital Information Technologies, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 203-212, 2021.
Mirko SAJIĆ1, Dušanka BUNDALO2, Željko VIDOVIĆ3, Zlatko BUNDALO4, Dejan LALIĆ5, Luka SAJIĆ6, 1Independent University Banja Luka, Faculty of Information Technologies, Republic of Srpska, Banja Luka, 2University of Banja Luka, Faculty of Philosophy, Republic of Srpska, Banja Luka, 3University of East Sarajevo, Faculty of Traffic Engineering, Republic of Srpska, East Sarajevo, 4University of Banja Luka, Faculty of Electrical Engineering, Republic of Srpska, Banja Luka, 5NLB Banja Luka, Republic of Srpska, Banja Luka, 6Pan-European University Apeiron Banjaluka, Faculty of Information Technologies, Republic of Srpska, Banja Luka
Keywords: teller/counter services, business transformation, process automation and robotization, modern and mobile information technologies, pandemic, universal multifunctional digital devices, mobile banking, digital signature
Abstract: The paper considers, proposes and describes the possibilities and ways of transforming teller/counter services using modern and mobile information technologies in order to increase the efficiency of such business. The shortcomings of the traditional teller/counter services are pointed out, and the reasons that will lead to the transition to a modern automated way of providing teller/counter services, without the physical presence of a person, are presented. Then, various variants of partial or complete automation of teller/counter services using modern mobile information technologies are considered. The impact of the pandemic on accelerating the online working and services is mentioned. Then, ways of transforming teller/counter business are proposed and described, through several variants, such as the use of intelligent digital teller/counter terminals and the application of remote online services, through several practical examples. Factors that influence the limitation of the degree of automation and what needs to be done to overcome these limitations are highlighted. Groups of users are profiled who, according to their objective and subjective reasons, will use certain types of automation of teller/counter operations. Appropriate intelligent multifunctional devices are presented, which are already used in some areas as a transitional solution in the automation of the provision of teller/counter services.
WHO’S AFRAID OF THE BIG BAD WOLF? IS E-LEARNING EDUCATION SUCH A HUGE THREAT NOWADAYS?
Copy citation: A. Fălăuș, R. Demarcsek, L. Todea, Who’s Afraid of the Big Bad Wolf? Is E-Learning Education Such a Huge Threat Nowadays?, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 213-226, 2021.
Anamaria FĂLĂUȘ, Ramona DEMARCSEK, Luminița TODEA,North University Centre of Baia Mare, Technical University of Cluj-Napoca, Romania, anamariafelecan@gmail.com, ramona_maria10@yahoo.com, luminitatodea@yahoo.com
Keywords: E-learning, education, types of learners, technology developments
Abstract: Technology is something that we’ve been taking for granted for quite a while now. We cannot imagine our lives without a smart phone or without spending hours online chatting with friends, searching for information, staying up-to-date with the latest news. However, when it comes to online education, reluctance, mistrust and suspicion are the key words normally and constantly associated with it. My paper, as a consequence, attempts to debunk the negative opinions that have grown up around E-learning methods and activities, focusing on the usefulness and effectiveness of such multimedia courses. It also intends to differentiate between different age groups or types of learners in order to emphasise the suitability of online training options in education for certain categories of learners.
Copy citation: A. Pop-Vadean, The Importance of Energy Recovery Technologies for the Implementation of Smart Society and Smart City Concepts, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 227-235, 2021.
Adina POP-VĂDEAN, Technical University of Cluj Napoca, Department of Mechatronics and Machine Dynamics, Muncii str., no. 103-105, 400641 Cluj Napoca, Romania,adinaluciapopvadean@yahoo.com
Keywords: Internet of things, smart society, smart city, harvesting energy
Abstract: An intelligently developed society is defined by a concept that integrates information technology in all its fields in which man is the direct beneficiary of this environmentally friendly process. Man is both the main actor and the direct beneficiary of the products and services of the intelligent society. This detail must be the determining factor for the development of any society from a classical to a smart one and here comes the concept of Human Informational Field (HIF) accompanies the human being in his interactions. But smart society is about connecting between people, systems, about sharing information and so we get to the Internet of things, or IoT a system of interrelated computing devices, mechanical and digital machines, objects, animals or people. The internet of things helps people live and work smarter, as well as gain complete control over their lives. Because IoT is a sensor network of billions of smart devices the problem of energy supply appears. Energy recovery or harvesting systems is a possible solution that could enable IoT nodes to scavenge self-sustaining energy from environmental sources. In this article we will review these systems and emphasize their importance in the development of smart society or smart city.
TEACHING ESP TO STUDENTS IN MECHANICAL ENGINEERING VIA INTERACTIVE PLATFORMS
Copy citation: M. Barbul,Teaching ESP to Students in Mechanical Engineering Via Interactive Platforms, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 236-251, 2021.
Minodora BARBUL,Technical University of Cluj-Napoca
Keywords: Engineering education, Mechanical engineering, Interactive systems, Learning
Abstract: Teaching English for Specific Purposes is a challenging endeavor, especially during a pandemic that forced a new teaching/learning paradigm. The present paper aims to highlight the online tools and platforms that have been useful in order to provide an efficient and enjoyable learning experience. Considering the learning styles of the students and the skills needed for future engineers to become competitive on the labor market, we have comprised a series of sample activities that may be considered examples of good practice.
INTELLIGENT FINGERPRINT-BASED ACCESS SYSTEM WITH CAMERA
Copy citation: M. D. Sas, Intelligent Fingerprint-Based Access System with Camera, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 252-261, 2021.
Marina Daniela SAS,Technical University of Cluj-Napoca, Department of Electrical, Electronic and Computer Engineering, sas.marina8@gmail.com
Keywords: camera, fingerprint sensor, artificial intellingence
Abstract: The paper presents a theoretical study and a practical realization of a system for access based on the imprint of a room and keeping track of people who are unauthorized. The assembly is done on a small scale (at the model level). For the practical realization we used the FPM10A fingerprint reader module, the Arduino AT Mega 2560 control unit equipped with the AT mega2560 microprocessor and an ESP32Cam camera equipped with the ESP32 microprocessor. The role of the fingerprint reader will be to check and recognize the fingerprints already stored in his memory, to the people who will want you to enter the rooms. The role of the camera will be to take a picture of the person whose fingerprint is not recognized. To view the allowed or not allowed access status, we mounted the 1.8” TFT LCD display. For the power supply of the assembly I used a 12V source that supplied my electromagnetic lock and from this source with the help of a low voltage converter you could power your Arduino board and ESP32Cam board, these being necessarily supplied at 5V voltage. The advantage of this application is that it secures the entrance to a room and can keep track of remote unauthorized persons who have tried to enter the room.
DIGITALISED DELIVERY OF LANGUAGE. AN APPROACH TOWARDS MACHINE TRANSLATION TECHNOLOGY
Copy citation: I. B. Pop, Digitalised Delivery of Language. An Approach Towards Machine Translation Technology, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 262-276, 2021.
Ioan Beniamin POP, Technical University of Cluj-Napoca, Faculty of Letters, pbeniamin@yahoo.com
Keywords: machine translation, automated translation, built-in linguistic rules, statistics-based, rule-based
Abstract: Unquestionably, in today’s language professionals, the use of information and communication technology (ICT) is already taken for granted and electronic handling as well as digitalized delivery of language services are standard client facilities. The present paper, while taking into the discussion the progressive stages of machine-assisted human translation (MAHT) and human-assisted machine translation (HAMT), analyses the present-day realities of Machine Translation.
Copy citation: P. Tamas, A. Pop, Movement in Virtual Reality, Carpathian Journal of Electrical Engineering, vol. 15, no. 1, pp. 277-282, 2021.
Paul TAMAS, Andreea POP, Technical University of Cluj-Napoca, Department of Electrical, Electronic and Computer Engineering, paultamas32@gmail.com, andreeapop05@yahoo.com
Keywords: Software implementation, Virtual Reality, Application programming interfaces
Abstract: In this paper we talk about the user’s movement in virtual reality. The programmable part of the application is made in the C ++ programming language, and as the engine for running the graphic image we used Unreal Engine developed by Epic Games. Fragments of code appear in the paper for the calculation and positioning of the user in space, on a two-dimensional plane. The work also contains instructions to be able to make the settings so that the application can be controlled by the glasses levers. The whole project is developed for HTC VIVE PRO virtual reality smart glasses.