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2009 5th IEEE GCC Conference and Exhibition, GCC 2009

作者： Krejcar, Ondrej Department of Measurement Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic

ISBN: (纸本)9781424438853

The paper deal with a mobile wireless connected devices and the problem of their slow wireless connection. The main area of interest is in a model of data prebuffering based system enhancement for locating and tracking users of our control system inside the buildings. The experimental framework prototype uses a WiFi network infrastructure to let a mobile device determine its indoor position. User location is used for data pre-buffering and pushing information from server to user's PDA. All server data are saved as artifacts (together) with its position information in building. The accessing of prebuffered data on mobile device can highly improve response time needed to view large multimedia data. On mobile device the SQL Server CE database is used. Mobile device operate with Windows Mobile 6.0 operation system which is real time. All operations in such mobile clients are deterministic.

关键词： Database systems

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Smartphone, PDA and embedded devices as mobile monitoring stations of biotelemetric system

Smartphone, PDA and embedded devices as mobile monitoring st...

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2009 5th IEEE GCC Conference and Exhibition, GCC 2009

作者： Krejcar, Ondrej Janckulik, Dalibor Martinovic, Jan Department of Measurement Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic VSB-Technical University of Ostrava Faculty of Electrical Engineering and Computer Science Department of Computer Science 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic

ISBN: (纸本)9781424438853

The main goal of our project is to provide solution which can be used in different areas of health care and which will be available through PDAs (Personal Digital Assistant), web browsers or desktop clients. The realized system deals with an ECG sensor connected to mobile equipment, such as PDA/Embedded, based on Microsoft Windows Mobile operating system. The whole system is based on the architecture of .NET Compact Framework, and Microsoft SQL Server. The project was successfully tested in real environment in cryogenic room (-136°C).

关键词： Electrocardiograms

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Application of Ada Language in a Real-time Database System - A Perspective

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IFAC Proceedings Volumes 2009年第1期42卷 236-241页

作者： Pavel Moryc Jindřich Ĉernohorský Technical University of Ostrava Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre for Applied Cybernetics Ostrava Czech Republic

This paper outlines further research possibilities in the field of Real-Time Database Systems. It is based on the previous research accomplished at the Technical University of Ostrava, including the V4DB Real-Time Dat...

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Attenuation of ultrasound pressure fields described via contrast source formulation

Attenuation of ultrasound pressure fields described via cont...

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2009 IEEE International Ultrasonics Symposium, IUS 2009

作者： Demi, L. Verweij, M.D. Huijssen, J. De Jong, N. Van Dongen, K.W.A. Laboratory of Acoustical Imaging and Sound Control Faculty of Applied Sciences Delft University of Technology Netherlands Laboratory of Electromagnetic Research Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology Netherlands Laboratory of Experimental Echocardiography Erasmus Medical Center Rotterdam Netherlands

ISBN: (纸本)9781424443895

Experimental data reveal that attenuation is an important phenomenon in medical ultrasound. The phenomenon is of particular importance for applications based on nonlinear propagation, as the higher frequency components of the pressure field generally experience greater attenuation. Therefore a method that is capable of modeling attenuation accurately is essential. In this paper we present a method to model attenuation via a contrast source formulation. We compare the obtained results with a version of the INCS method in which the attenuation is included in the Green's function. Both results are in excellent agreement with each other. ©2009 IEEE.

关键词： Ultrasonics

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Simulation of stage I short crack propagation in an austenitic-ferritic duplex steel

Simulation of stage I short crack propagation in an austenit...

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12th International Conference on Fracture 2009, ICF-12

作者： Köster, P. Knobbe, H. Fritzen, C.-P. Christ, H.-J. Krupp, U. Institute of Mechanics and Control - Mechatronics University of Siegen 57068 Siegen Germany Institute of Materials Science University of Siegen 57068 Siegen Germany Faculty of Engineering and Computer Sciences University of Applied Sciences Osnabrück 49009 Osnabrück Germany

ISBN: (纸本)9781617382277

The propagation of short fatigue cracks is simulated in the microstructure of an austenitic-ferritic duplex steel by means of a mechanism-based model. Due to strong interactions with microstructural features, such as grain and phase boundaries the growth rate of these short cracks is substantially non-uniform. The strength of these barriers has been quantified by a Hall-Petch analysis and the findings have been implemented into a two-dimensional model for stage I crack propagation, which considers the orientation of available slip systems and can predict the crack growth in a real microstructure. The model allows the activation of secondary slip systems at the crack tip resulting in a crack propagation on multiple slip bands. To study the effect of a misorientation between two slip planes on crack propagation the stress field at the tip of a surface crack is calculated using a three dimensional extended crack model. Crack growth simulations carried out with the model show good agreement with experimental data.

关键词： Crack propagation

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Remote wireless low cost RT process control using windows PLC by MATLAB/Simulink throw the REX control system

Remote wireless low cost RT process control using windows PL...

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2009 5th IEEE GCC Conference and Exhibition, GCC 2009

作者： Krejcar, Ondrej Konarik, Petr VSB-Technical University of Ostrava Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre for Applied Cybernetics 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic VSB-Technical University of Ostrava Faculty of Mechanical Engineering Department of Control System and Instrumentation 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic

ISBN: (纸本)9781424438853

Paper shows direct connection and implementation way of designed control schemas of prepared applications to an industrial WinPLC. Paper deals with industrial realization of feedback control of demanding applications on their control, control algorithms and visualization together with design, implementation and real time control from MATLAB/Simulink Environment. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution. As next benefit the application is created for visualization the data from RT database during the measurement and control process. This last benefit produce an interesting data from real control process to give a next reason to use of WinCon solution.

关键词： Visualization

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Low Cost RT Process control Using Windows PLC by MATLAB/Simulink Throw the REX control System by Secured Wireless Network

Low Cost RT Process Control Using Windows PLC by MATLAB/Simu...

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ICONS International Conference on Systems

作者： Ondrej Krejcar Petr Konarik Department of Measurement and Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Ostrava-Poruba Department of Measurement and Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Ostrava-Poruba Czech Republic Department of Control System and Instrumentation VSB-Technical University of Ostrava Faculty of Mechanical Engineering Ostrava-Poruba Czech Republic

Paper deals with industrial realization of feedback control of demanding applications on theirs control, control algorithms and visualization together with real time control from MATLAB/Simulink Environment. Paper shows direct connection and implementation way of designed control schemas of prepared applications to an industrial WinPLC. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution.

关键词： Costs Process control Programmable control MATLAB control systems Wireless networks Electrical equipment industry Industrial control Pulp and paper industry Feedback control

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Architecture, Development and Testing of Home Care Biomedical System

Architecture, Development and Testing of Home Care Biomedica...

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IEEE Conference on Vehicular Technology (VTC)

作者： Ondrej Krejcar Dalibor Janckulik Leona Motalova Centre of Applied Cybernetics Department of Measurement and Control Faculty of Electrical Engineering and Computer Science Technical University of Ostrava Ostrava Czech Republic Department of Measurement and Control Faculty of Electrical Engineering and Computer Science Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424425143

The project deal with architecture design, system development and testing of software framework for data management and scheduling of personal sources in home care agencies. Development is started from analyses, over proposal, implementation to resulting testing of application, thereby try cast over whole problems software engineering. System consists of the three main parts PC application, mobile application and database server. All these parts are built on technology Microsoft .NET solutions for desktop and mobile PCs. System works offline, whereas synchronization mobile arrangement with data in database is made only in agency by the help of technology USB, Bluetooth or WiFi. Software layer synchronization administration data is based on technologies ADO .NET and Linq. System will further develop and will base for advancement biomedical science research framework.

关键词： System testing Application software computer architecture Software testing Databases Project management Software development management Proposals Software engineering Personal communication networks

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Smartphone, PDA and embedded devices as mobile monitoring stations of biotelemetric system

Smartphone, PDA and embedded devices as mobile monitoring st...

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IEEE GCC Conference & Exhibition

作者： Ondrej Krejcar Dalibor Janckulik Jan Martinovic Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre of Applied Cybernetics VSB-Technical University of Ostrava Ostrava Poruba Czech Republic Faculty of Electrical Engineering and Computer Science Department of Computer Science VSB-Technical University of Ostrava Ostrava Poruba Czech Republic

关键词： Servers Databases Mobile communication Electrocardiography Web services Medical services Personal digital assistants

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Highlights of low cost RT process control using WinPAC by wireless network

Highlights of low cost RT process control using WinPAC by wi...

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Eurocon

作者： Ondrej Krejcar Petr Konarik Michal Tutsch Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre for Applied Cybernetics VSB-Technical University of Ostrava Ostrava Czech Republic

Paper shows direct connection and implementation way of designed control schemes of prepared applications to an industrial WinPLC/WinPAC. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution.

关键词： Costs Process control Wireless networks control systems MATLAB Automatic control Application software Hardware Nonlinear control systems control nonlinearities

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