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International Conference and Exposition on Electrical and Power Engineering (EPE)

作者： Dănuţ Adrian Poştovei Constantin Bulac Ion Triştiu Balduino Camachi Faculty of Power Engineering University Politehnica of Bucharest Bucharest Romania Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Bucharest Romania

ISBN: (数字)9781728181264

ISBN: (纸本)9781728181271

This paper presents a practical laboratory for student education purpose in Distributed control Systems, with focus on applications for high voltage transmission substations. The monitoring, control and protection part is realized with a software platform and IED devices manufactured by AREVA T&D France, while the primary equipment, like circuit breakers and disconnectors are simulated with latched relays. The system architecture and communication network are reproducing a real one usually used in transmission substations. The implementation of this laboratory, both through specific laboratory works and experiments, makes the theoretical part to be supported by a practical experience, resulting in future graduates with added value in the electric power industry.

关键词： Databases Substations Relays Tools Protocols Monitoring Hardware

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Hybrid Sensor Network for Monitoring Environmental Parameters

Hybrid Sensor Network for Monitoring Environmental Parameter...

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Mediterranean Conference on control and Automation (MED)

作者： Dan Popescu Emilian Vlasceanu Marius Dima Florin Stoican Loretta Ichim Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Bucharest Romania AFT R&D Bucharest Romania

ISBN: (数字)9781728157429

ISBN: (纸本)9781728157436

The paper proposes a cheap hybrid ground-air sensor network for environmental parameter measurements. The ground sensors are grouped into clusters, each cluster having several sensory nodes connected to a cluster head that sends the relevant data to the aerial, mobile nodes - unmanned aerial vehicles (UAVs). Thus, using optimal trajectories, the UAVs are used both for measuring directly environmental parameters, as well as for collecting data from ground sensors. The authors present the modules' implementation of the hybrid system: ordinary sensory nodes, cluster heads, ground control stations, communication modems and UAV platforms. Finally, the performances of the realized hybrid network are analyzed from multiple points of view: energy consumption, time, and data acquisition efficiency.

关键词： Unmanned aerial vehicles Trajectory Wireless sensor networks Monitoring Servers Task analysis Data acquisition

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Hard hat wearing detection based on head keypoint localization

arXiv

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arXiv 2021年

作者： Wójcik, Bartosz Zarski, Mateusz Ksiązek, Kamil Miszczak, Jaroslaw A. Skibniewski, Miroslaw J. Faculty of Civil Engineering Silesian University of Technology Poland Institute of Theoretical and Applied Informatics Polish Academy of Sciences Poland Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology Poland Department of Civil & Environmental Engineering University of Maryland College Park United States

In recent years, a lot of attention is paid to deep learning methods in the context of vision-based construction site safety systems. However, still there is no reliable way to establish the relationship between supervised construction workers and their basic personal protective equipment, like hard hats. To address this problem, a novel deep learning method combining object detection, keypoint localization, and simple rule-based reasoning is proposed in this article. In tests, this solution surpassed the previous methods based on the relative bounding box position of different instances, as well as direct detection of hard hat wearers and non-wearers. Achieving MS COCO style overall AP of 67.5% compared to 66.4% and 66.3% achieved by the above-mentioned approaches, with class specific AP for hard hat non-wearers of 64.1% compared to 63.0% and 60.3%. The results show that the conjunction of deep learning methods with humanly-interpretable rule-based algorithm is better suited for detection of hard hat non-wearers. Code is available at barwojcik/hard-hats. © 2021, CC BY.

关键词： Object detection

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Initial Study on Implementation of Smoothing Filters for the Purpose of Bioimpedance Spectroscopy Parameters Classification

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IFAC-PapersOnLine 2022年第4期55卷 393-398页

作者： Aleksandra Kawala-Sterniuk Amir F. Al-Bakri Mariusz Pelc Katarzyna Cichoń Wojciech Chlewicki Stepan Ozana Radek Martinek Jakub Możaryn Volodymyr Khoma Halyna Kenyo Edward Jacek Gorzelańczyk Michał Podpora Jarosław Zygarlicki Opole University of Technology Faculty of Electrical Engineering Automatic Control and Informatics 45-758 Opole Poland Department of Biomedical Engineering College of Engineering University of Babylon 51001 Babylon Iraq University of Greenwich School of Computing and Mathematical Sciences SE10 9LS London UK West Pomeranian University of Technology in Szczecin Faculty of Electrical Engineering 70-313 Szczecin Poland Faculty of Mechatronics Warsaw University of Technology 02-525 Warsaw Poland Lviv Polytechnic National University Institute of Computer Technologies Automation and Metrology Lviv Ukraine Institute of Philosophy Kazimierz Wielki University 85-092 Bydgoszcz Poland Faculty of Mathematics and Computer Science Adam Mickiewicz University in Poznań 61-614 Poznań Poland

Bioimpedance is a commonly used method for various conditions monitoring. In this paper, the authors carried out some research where they implemented various smoothing filters to enable identification of the bioimpedance spectroscopy parameters. The proposed filtering methods may also be used for application on embedded systems, which have smaller computing power but have become recently very popular. The obtained results with the implementation of smoothing filters were promising, however, some of the obtained results were unsatisfactory. This work also contains a brief introduction to bioimpedance spectroscopy and smoothing filters.

关键词： Bioimpedance Spectroscopy smoothing-filtering Savitzky-Golay Filter Median Filtering Moving-Average Filters

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Evaluation of the ARCore Indoor Localization Technology

Evaluation of the ARCore Indoor Localization Technology

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Roedunet International Conference (RoEduNet)

作者： Anca Morar Maria Anca Băluţoiu Alin Moldoveanu Florica Moldoveanu Alex Butean Victor Asavei University POLITEHNICA of Bucharest Faculty of Automatic Control and Computer Science Bucharest Romania Lucian Blaga University of Sibiu Faculty of Engineering Industrial Software Sibiu Romania

ISBN: (数字)9780738112657

ISBN: (纸本)9781665418850

Augmented reality has become a very powerful tool nowadays. With the recent technological advance, smartphones have the ability to display augmented content on the screen. What makes the difference is the naturalness with which the multimedia content is superimposed over the video stream acquired with the phone's camera. This perfect overlay depends on the accurate estimation of the position and orientation of the smartphone's camera relative to the 3D representation of the space. ARCore is an augmented reality framework that computes the position and orientation of the smartphone. In order to assess the possibility of integrating ARCore within a virtual and augmented reality platform, we evaluated the accuracy of the ARCore localization technology, using the HTC Vive system as a reference. We designed an evaluation methodology, along with visualization tools that enable a thorough comparison between these two technologies.

关键词： Location awareness Smart phones Augmented reality Cameras Trajectory Three-dimensional displays computer science

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Landscape Change Monitoring using Satellite Data and Open Data Cube Platform

Landscape Change Monitoring using Satellite Data and Open Da...

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IEEE International Conference on Intelligent computer Communication and Processing (ICCP)

作者： Cătălin-Mihai Vâjâială-Tomici Ion-Dorinel Filip Florin Pop Faculty of Automatic Control and Computer Science University POLITEHNICA of Bucharest Romania National Institute for Research and Development in Informatics – ICI Bucharest Romania

ISBN: (数字)9781728190808

ISBN: (纸本)9781728190815

The project presented in this paper aims to bring to the Romanian stage a system capable of providing information on various land changes that occur in Romania. These changes can have multiple causes, either natural or caused by human activities. Local authorities, business people, and researchers can use this information to make informed decisions that can influence Romanian citizens' well-being. This paper presents a method to build a complex system at the national level, aiming to highlight the usefulness of using geospatial data. In order to interact in a pleasant way with geospatial data providers, this work is based on an open-source solution called Open Data Cube, which incorporates in a library different services, acting as an interface between the system itself and the data providers, but also as a standard for data storage. This paper explores three different use cases, namely the detection of deforestation, monitoring the evolution of urbanization, and the evolution of the Black Sea coast, especially in the area of the mouth of the Danube river. Although different, with totally different causes, these three examples highlight the versatility of such a system.

关键词： Indexes Satellites Monitoring Vegetation mapping Urban areas Open source software Rivers

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Gradient Boosting Application in Forecasting of Performance Indicators Values for Measuring the Efficiency of Promotions in FMCG Retail

arXiv

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arXiv 2020年

作者： Henzel, Joanna Sikora, Marek Department of Computer Networks and System Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology ul. Akademicka 16 Gliwice44-100 Poland

—In the paper, a problem of forecasting promotion efficiency is raised. The authors propose a new approach, using the gradient boosting method for this task. Six performance indicators are introduced to capture the promotion effect. For each of them, within predefined groups of products, a model was trained. A description of using these models for forecasting and optimising promotion efficiency is provided. Data preparation and hyperparameters tuning processes are also described. The experiments were performed for three groups of products from a large grocery company. Copyright © 2020, The Authors. All rights reserved.

关键词： Benchmarking

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Refinement of Massey Inequality : (To Nicolae Ţǎpuş on his 70th birthday)

Refinement of Massey Inequality : (To Nicolae Ţǎpuş on hi...

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2019 IEEE International Symposium on Information Theory, ISIT 2019

作者： Popescu, Pantelimon George Omar Choudary, Marios Computer Science and Engineering Department Faculty of Automatic Control and Computers University Politehnica of Bucharest Splaiul Independenţei 313 Bucharest060042 Romania

ISBN: (纸本)9781538692912

关键词： Information theory

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The Energy Efficiency of a Prosumer in a Photovoltaic System

The Energy Efficiency of a Prosumer in a Photovoltaic System

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International Symposium for Design and Technology of Electronics Packages (SIITME)

作者： Marius-Alexandru Dobrea Stefan Bichiu Ioana Opris Mihaela Vasluianu Faculty of Automatic Control and Computer Science UPB Bucharest Romania Faculty of Power Engineering UPB Bucharest Romania Collective of Automation and Applied Informatics Faculty of Hidrotehnics UTCB Bucharest Romania

ISBN: (数字)9781728175065

ISBN: (纸本)9781728175072

This article aims to calculate the net income achieved by a prosumer for an existing On-Grid system of photovoltaic panels consisting of a set of 12 poly crystalline panels with a nominal power of 250 Wand 60 cells and an On-Grid inverter (StecaGrid model) with a maximum power of 3000 W. The prosumer is located in southern Romania, Ilfov County. Modeling of the photovoltaic panel in Matlab / SIMULINK was performed using a mathematical model, and it was compared with a real data set. Next, an analysis was made of the energy produced by the photovoltaic system, and the energy consumed by the prosumer, the excess energy being introduced in the national energy system. We have achieved a net income saving for March, so the analyzed photovoltaic system has energy efficiency that can significantly reduce electricity costs over time. Thus, using the Matlab / Simulink model, photovoltaic systems can be designed to satisfy the needs of prosumers.

关键词： Photovoltaic systems Mathematical model Solar power generation Software packages Inverters Temperature Temperature measurement

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Evaluation of Path States of Large IoT Networks Using Locally and Remotely controlled Measurements

Evaluation of Path States of Large IoT Networks Using Locall...

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IFIP Networking Conference

作者： Agnieszka Chodorek Robert R. Chodorek Faculty of Electrical Engineering Automatic Control and Computer Science Kielce University of Technology Kielce Poland Department of Telecommunications The AGH University of Science and Technology Kraków Poland

ISBN: (数字)9783903176287

ISBN: (纸本)9781728167107

The state of network paths is of great importance for the quality and reliability of the transmission of information coming from the IoT devices. Changing network conditions cause the state of a single path to be highly unpredictable, especially when large-scale IoT networks, connecting thousands of specialized devices, are in use. The solution to this problem is to perform trials in a real environment, with the use of real hardware. The rationalization of the design, the implementation and the exploitation of the process will be the main benefit of this approach. In this demonstration, a testbed infrastructure for the estimation of the state of path parameters in wired and wireless networks is presented. The estimation is based mainly on active measurements performed with the use of the Probing Packet Trains method. The key elements of the testbed infrastructure are locally and remotely controlled energy-efficient single-board computers, working under the control of the Linux operating system, which are equipped with software able to track (in manual or automatic mode) changing conditions of a given transmission path.

关键词： Estimation Internet of Things Monitoring Performance evaluation Servers Manuals Bandwidth

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