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Decentralized Edge-AI System for Real-Time Syrian License Plate Recognition Using Khadas Vim3 6

Decentralized Edge-AI System for Real-Time Syrian License Pl...

引用

6th International Youth Conference on Radio Electronics, Electrical and Power Engineering, REEPE 2024

作者： Ali, Salman Hamed, Ahmad Spasenov, Alexey Y. Berezkin, Dmitry V. Hamdoun, Omar Bauman Moscow State Technical University 'BMSTU' Computer-aided Design Systems Department Moscow Russia Bauman Moscow State Technical University 'BMSTU' Computer Systems and Networks Department Moscow Russia Higher Institute for Applied Sciences and Technology Informatics Department Damascus Syria

ISBN: (纸本)9798350382891

The growing dependence on personal vehicles has intensified challenges in traffic management, violation monitoring, and locating stolen cars. Addressing these issues, this study introduces a real-time, smart system for detecting and recognizing Syrian car license plates using surveillance camera image processing. The system is built on a decentralized architecture with edge computers, notably the Khadas Vim3 equipped with Neural Processing Units (NPUs). It utilizes two YoloV4-tiny networks trained on a dataset of over 1100 images of Syrian license plate. The first network detects cars and plates with high accuracy, while the second recognizes numbers on the plates with 87% accuracy. Adhering to Internet of Things (IoT) principles, the system processes up to 16 frames per second for detection and 8 frames per second for broadcasting results, maintaining uninterrupted operation even if an edge computer is offline, thereby providing a consistent and efficient solution for traffic management challenges. © 2024 IEEE.

关键词： License plates (automobile)

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Numerical Study of the Perturbed Region Produced by a Heating Facility in the Lower Ionosphere 22nd

Numerical Study of the Perturbed Region Produced by a Heatin...

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22nd International Conference on Computational Mechanics and Modern Applied Software Systems, CMMASS 2021

作者： Moiseeva, Daria S. Stupitsky, Evgenii L. Institute for Computer Aided Design of the Russian Academy of Sciences 19/18 Vtoraya Brestskaya ul Moscow123056 Russia

ISBN: (纸本)9789811689253

The chapter presents a numerical study of the parameters of a heated region created in the D region of the ionosphere (~35–100 km) by radio waves from powerful high-frequency facilities (for example, HAARP). In order to understand the role of the most important processes in this study, a number of assumptions were made in the complex kinetic model formulated by the authors. The calculations show a fundamental difference in the behavior of the parameters for the daytime and nighttime ionosphere. The effect of the appearance of self-sustained oscillations within the region under night conditions has been found. Its physical substantiation is given. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Radio waves

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Development of Microcontroller-Based Pure Sine Wave Inverter with Overload and Overheating Protection 17

Development of Microcontroller-Based Pure Sine Wave Inverter...

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17th IEEE International Conference on Advanced Trends in Radioelectronics, Telecommunications and computer Engineering, TCSET 2024

作者： Holovatyy, Andriy Lobur, Mykhaylo Holovata, Sofia Lukaszewicz, Andrzej Nowakowski, Marek Kolesnyk, Kostyantyn Lviv Polytechnic National University Department of Computer-Aided Design Systems Lviv Ukraine Ukrainian National Forestry University Department of Software Engineering Lviv Ukraine Bialystok University of Technology Department of Machinery Design and Operation Bialystok Poland Military Institute of Armoured and Automotive Technology Development Department Sulejowek Poland Lviv Polytechnic National University Department of Computera-Aided Design Systems Lviv Ukraine

ISBN: (纸本)9798331520564

In the paper, hardware and software of the Arduino based pure sine wave inverter with overload and overheating protection have been developed. The inverter constantly monitors the consumption current, the battery voltage, the temperature of the power switches (radiator) and, if their parameters are normal, forms a sinusoidal voltage of 230 V, 50 Hz at the output of the inverter, similar to the network voltage. The inverter provides the display of information on the LCD screen about current and power consumption, battery voltage, temperature of the inverter power switches, as well as display of emergency icons when the permissible operating parameters are exceeded. The inverter generates sound and visual warning messages with LED indicators and buzzer. The inverter can be used as a lightweight low-power 100 W network inverter with sine-wave voltage for autonomous power supply of low-power electronics. © 2024 IEEE.

关键词： Microcontrollers

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Classification of Fault Signals by Chaotic Oscillators Synchronization

Classification of Fault Signals by Chaotic Oscillators Synch...

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2023 Seminar on Signal Processing, SoSP 2023

作者： Druzhina, Olga S. Kholkin, Vladislav S. Isakov, Oleg A. Karimov, Timur I. Karimov, Artur I. Saint Petersburg Electrotechnical University LETI Department of Computer Aided Design Saint Petersburg Russia Youth Research Institute Saint Petersburg Electrotechnical University LETI Saint Petersburg Russia

ISBN: (纸本)9798350371086

Among ways of technical systems monitoring, methods using sensors of mechanical vibrations are widely used. Such sensors make it possible to inspect vibrations in electrical machines, gearboxes and other mechanisms and to identify signs of malfunctions. Simple and efficient algorithms for finding signs of faults, suitable for use in low-cost hardware, are in demand. One of the newest techniques in this field is the diagnostics based on chaotic systems. We propose a new method of this family based on the observing the synchronization error between two chaotic oscillators. For numerical study, recordings of vibrations of a motor with faulty bearing were used. We show that the proposed method reliably identifies the signs of a defect in the presence of background noise. © 2023 IEEE.

关键词： Fault detection

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About the Formation of Polygonal Structures over the Rotating Disk

About the Formation of Polygonal Structures over the Rotatin...

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Applied Mathematics, Computational Science and Mechanics: Current Problems (AMCSM)

作者： Fedor A. Maksimov Institute of Computer Aided Design of the Russian Academy of Sciences Moscow Russia

ISBN: (数字)9798350348576

ISBN: (纸本)9798350348583

The problem of viscous gas flow over a rotating disk is investigated using numerical simulation. The conditions in which axisymmetric flow is destroyed with the formation of almost regular polygonal structures are considered. With a fixed size of a disk rotating at the same speed, the viscosity and the thickness of the layer above the disk determine the flow. The flow maps with a sequential change from an octagon to a quadrilateral were obtained as a result of numerical experiments.

关键词： Viscosity Scientific computing Saturn Fluid flow Numerical simulation Stability analysis Mathematics

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Deep Transfer Learning for Sleep Stages Classification by EEG Data

Deep Transfer Learning for Sleep Stages Classification by EE...

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2023 Seminar on Digital Medical and Environmental Systems and Tools, DMEST 2023

作者： Petrova, Elizaveta M. Rybin, Vyacheslav G. Karimov, Timur I. Saint Petersburg Electrotechnical University 'LETI' Department of Computer Aided Design Saint Petersburg Russia Youth Research Institute Saint Petersburg Electrotechnical University 'LETI' Saint Petersburg Russia

ISBN: (纸本)9798350371123

Sleep is one of the key factors of well-being affecting life quality and longevity, which makes sleep monitoring an important task. In this paper, we propose the transfer learning approach for sleep stages classification based on EEG recordings, aiming the analysis of the patient's sleep quality. Transfer learning makes training possible with a small amount of labeled data. Also, usually it takes less time to fine-tune a pretrained model. For the numerical experiments, we use an open PhysioNet Sleep-EDF dataset containing more than 150 EEG files with annotations, and recurrent autoencoder network TimeNet. The proposed approach provides the highest achievable binary classification accuracy when only 10% of labeled data used for training. © 2023 IEEE.

关键词： Recurrent neural networks

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Mathematical Modeling of Spots Chain Dynamics in Fluid 22nd

Mathematical Modeling of Spots Chain Dynamics in Fluid

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22nd International Conference on Computational Mechanics and Modern Applied Software Systems, CMMASS 2021

作者： Gushchin, Valentin A. Smirnova, Irina A. Institute for Computer Aided Design of the Russian Academy of Sciences 19/18 Vtoraya Brestskaya ul. Moscow123056 Russia

ISBN: (纸本)9789811689253

The problem of the turbulence spots chain dynamics in a stratified medium depending on the Reynolds and Froude numbers is investigated numerically. The task is described by the Navier–Stokes equations in the Boussinesq approximation. Initially, the round spots chain is horizontal. Under the action of hydrodynamic forces, this chain turns into a horizontal streak with a width of π/2 if the spot radius is 1. Salinity is chosen as a stratifying component, just as it can be implemented in the laboratory. To solve the problem, the SMIF method is used. The finite-difference scheme of which has such properties as the second order of approximation on spatial variables, minimal scheme dissipation and dispersion. The results of comparing the formation of the streak at different Reynolds and Froude numbers are presented. The features of the spots chain dynamics at low Reynolds and Froude numbers are received. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Froude number

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3-D Quasi-Conformal Mappings and Generalization of Axisymmetric Case 22nd

3-D Quasi-Conformal Mappings and Generalization of Axisymmet...

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22nd International Conference on Computational Mechanics and Modern Applied Software Systems, CMMASS 2021

作者： Shevelev, Yuriy D. Institute of Computer Aided Design of the Russian Academy of Sciences 19/18 Vtoraya Brestskaya ul. Moscow123056 Russia

ISBN: (纸本)9789811689253

In this chapter, we consider quasi-conformal mappings of axisymmetric regions as a special case of 3-D transformations. For a steady irrotational flow of an incompressible inviscid fluid, two streamline functions are introduced. Any solenoid vector can be presented as a vector product of the gradients of two streamline functions. In order to determine the potential of the velocities, we obtain the relation between the velocity components and the streamline functions. These transformations are the basis for the harmonic mappings according to M.A. Lavrent’ev. On the other hand, these conditions can be considered as a generalization of the Cauchy-Riemann conditions in the 3-D case. As shown in our previous work, generalized 3-D Cauchy-Riemann conditions for harmonic mappings are reduced to the Cauchy-Riemann conditions for two functions of a usual complex variable. An analog of 3-D quasi-conformal mappings of axisymmetric regions is obtained as combination one functions of a polar complex variable and usual 2-D function. The application of the M.A. Lavrent’ev’s type of harmonic mappings allows to construct the analogs of quasi-conformal mappings of axisymmetric regions. The quasi-conformal mappings generalize the application of 2-D conformal mappings to the 3-D case in a natural way. The examples of visualization of quasi-conformal mappings of axisymmetric domains and their generalizations are given. The best proof of obtained results is their visualization. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Visualization

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Unconventional Trajectories of Meteoroids in the Earth’s Atmosphere 22nd

Unconventional Trajectories of Meteoroids in the Earth’s At...

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22nd International Conference on Computational Mechanics and Modern Applied Software Systems, CMMASS 2021

作者： Syzranova, Nina G. Andrushchenko, Viktor A. Institute of Computer Aided Design of the Russian Academy of Sciences 19/18 Vtoraya Brestskaya ul. Moscow123056 Russia

ISBN: (纸本)9789811689253

We study the interaction of meteoroids with the Earth’s atmosphere. Based on the physical theory of meteoroids, we develop a model that describes the trajectories of celestial bodies in the Earth’s atmosphere. Our model takes into account the effects of mechanical stress and heat flux that lead to the loss of the material of the meteoroid and its possible destruction. The model also allows us to consider rare instances of the change of the trajectory from descending to ascending, with the meteoroid possibly returning to space. We determine the kinematic conditions and physical parameters of meteoroids required for this unusual behavior. We simulate numerically and analyze the effects of the 1908 Tunguska event. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Trajectories

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Simulation of Flows Near Wings with Supersonic Edges 22nd

Simulation of Flows Near Wings with Supersonic Edges

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22nd International Conference on Computational Mechanics and Modern Applied Software Systems, CMMASS 2021

作者： Maksimov, Fedor A. Institute of Computer Aided Design of the Russian Academy of Sciences 19/18 Vtoraya Brestskaya ul. Moscow123056 Russia

ISBN: (纸本)9789811689253

Options for constructing a grid with an edge selection and setting the conditions for the conicity of the flow relative to the edge are offered to simulate the flow around conical bodies with a sharp supersonic edge. Methods for constructing a grid near a star-shaped body, a flat and V- or Λ-shaped wing, near a wing with a central body, and a V-shaped wing with a leading edge of negative sweep have been implemented. The boundary condition for the flow conicity relative to the edge is sufficient for constructing a solution. Calculations of the flow around several variants of geometries of bodies of various types with a fixed midsection area and wing span are carried out, their aerodynamic characteristics are compared. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Stars

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