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International Conference on Networking and Information Technology (ICNIT)

作者： Ondrej Krejcar Jiri Cajka Department of Measurement and Control Center of Applied Cybernetics Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424475797;9781424475773;9781424475780

A huge number of components for development tool of Microsoft Visual Studio is possible to find on internet. They are however only extensive, or graphically modified standard components that belongs to standard Visual Studio. Components development for industrial using is made by specialized firms. Such components are considerably price expensive. Aim of this project is to form at least small parts of components for HMI (Human Machine interface) on a basis of PDA with Windows Mobile with a usage of Microsoft Visual Studio 2008, eventually of other needed Open Source libraries.

关键词： control systems Libraries Graphics Displays Information technology Electric variables measurement computer science Internet Humans Mobile computing

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Optimal Data Artifact Determination for Mobile SQL Server CE Database Buffering as a Way to Solve the Problem of Low Performance of Portable Mobile Devices

Optimal Data Artifact Determination for Mobile SQL Server CE...

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International Conference on computer engineering and Applications (ICCEA)

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

ISBN: (纸本)9781424460793

The paper describes a problem of prebuffering on wireless connected mobile devices through a mobile database (Mobile SQL Server CE) as a solution for low throughput on wireless connection of mobile devices. As a second important area the optimal data artifact determination is described with a compare of two selected artifact size. The prebuffering control is based on wireless localization and positioning inside the buildings. Also the proposed technique is possible to adapt using others wireless communication networks or GPS positioning.

关键词： Databases Portable computers Testing Mobile computing Network servers Information systems Web server Smart phones Management information systems computer applications

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Development of bar code scanner application for Windows Mobile devices using a Symbol Mobility Developer Kit for .NET Compact Framework

Development of bar code scanner application for Windows Mobi...

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International Conference on Mechanical and Electronics engineering (ICMEE)

作者： Ondrej Krejcar Marcel Macecek Department of Measurement and Control Center for Applied Cybernetics Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic

The problem we would like to discuss and solve is based on a remote controlling of created packages containing predefined components with a predefined numbers of these components. In principle the problem acts as a check out control problem. By the help of mobile device with integrated bar code scanner an application for such mobile device can be developed as a remote client of server, which contains a database with predefined properties, numbers of packages, etc. A web services and mobile client application was created using a Microsoft Visual Studio 2008.

关键词： Mobile communication Europe

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Stress Testing Data Access via a Web Service for Determination of Adequate Server Hardware for Developed Software Solution

Stress Testing Data Access via a Web Service for Determinati...

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International Conference on computer engineering and Applications (ICCEA)

作者： Leona Motalova Ondrej Krejcar Center of Applied Cybernetics Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424460793

The aim of this project is stress testing of the system for data management and planning of the operations developed for home care agencies which has to be upgrading of the current system based on the older database of Microsoft Access product. The part of the system is a mobile application that allows employees to edit the records of patients directly in the terrain. The whole system, including applications developed for the stress testing is based on Microsoft technology .NET. Our Stress Testing application allows testing a selected problem areas to find any limitations before the tested developing solution will be set up at customer. By the help of our test application, the hardware solution for the server was selected on the base of selected home care agency needs.

关键词： Stress Software testing Web services Hardware Databases System testing Displays Random number generation Time factors Time measurement

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Use of accelerometers for material inner defect detection

Use of accelerometers for material inner defect detection

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作者： Krejcar, Ondrej Frischer, Robert Dept. of Measurement and Control Center for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Ostrava Poruba Czech Republic Dept. of Automation and Computing in Metallurgy VSB Technical University of Ostrava Ostrava Poruba Czech Republic

ISBN: (纸本)9788070438657

This paper deals with a possibility of non-destructive diagnostics of solid objects by software analysis of vibration spectrum by accelerometers. By a use of MATLAB platform, a processing and information evaluation from accelerometer is possible. Accelerometer is placed on the measured object. The analog signal needs to be digitized by a special I/O device to be processed offline with FFT (Fast Fourier Transformation). The power spectrum is then examined by developed evaluating procedures.

关键词： Accelerometers

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Optimization of Robot Trajectory with Motion Constraints

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IFAC Proceedings Volumes 2010年第24期43卷 144-149页

作者： Viktor Michna Petr Wagner Zdenek Machacek Measurement and Control Faculty of Electrical Engineering and Computer Science VSB - Technical University of Ostrava 17. listopadu 15 Ostrava-Poruba 708 33 Czech Republic

This paper deals with time-optimization of trajectories of wheeled robots within the speed and other constraints. The cubic Hermite spline curve with method of speed profile computation is used to determine the trajectory. This method is extended to allow the optimization with the constraints described. It ensures fulfillment of required initial parameters of motion. There is analyzed both situation without obstacle and with single stationary obstacle. Neural network is then introduced to accelerate the calculation of numerically computed optimal results.

关键词： Mobile robots Trajectory planning Splines Parameter optimization Obstacle avoidance Neural networks

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Development Methods for Low Cost Industrial control by WinPAC controller and measurement Cards in Matlab Simulink

Development Methods for Low Cost Industrial Control by WinPA...

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International Conference on computer engineering and Applications (ICCEA)

作者： Michal Tutsch Zdenek Machacek Ondrej Krejcar Petr Konarik Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Control System and Instrumentation Faculty of Mechanical Engineering VSB-Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424460793;9780769539829

The approach to development methods which are described in paper allows possibility extension for minimizing costs and widely external hardware industrial control systems utilization. There is described development method of control applications by industrial WinPLC/WinPAC and REX control compiler in comparison to classical development methods that need expensive RT measurement cards and produce only one purpose development solution. The project is based on specification of development process of designed control schemas of prepared applications to an industrial utilization by direct connection and implementation to the chosen control system WinPLC/WinPAC. Paper deals with a way how to produce a solution for control applications that are prepared, designed and implemented in MATLAB-Simulink to the target platform. The multiplatform control system REX is used as a bridge between MATLAB and target platform.

关键词： Costs Industrial control control systems electrical equipment industry Hardware Process design Process control computer languages Bridges MATLAB

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Modern development of low cost RT industrial process control based on Matlab-Simulink and PAC

Modern development of low cost RT industrial process control...

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Roedunet International Conference (RoEduNet)

作者： Michal Tutsch Petr Konarik Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Control System and Instrumentation Faculty of Mechanical Engineering VSB-Technical University of Ostrava Ostrava Czech Republic

The paper presents modern advanced development methods of control systems that minimizes the cost of development of applications which are widely applicable in industrial control of whole range of processes.

ISBN: (纸本)9781424473359

关键词： Costs Industrial control Process control computer languages

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Continuous Noninvasive Blood Pressure measurement by Near Infra Red CCD Camera and Pulse Transmit Time Systems

Continuous Noninvasive Blood Pressure Measurement by Near In...

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International Conference on computer engineering and Applications (ICCEA)

作者： Petr Zurek Ondrej Krejcar Marek Penhaker Martin Cerny Robert Frischer Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Automation and Computing in Metallurgy Faculty of Metallurgy and Materials Engineering Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424460793;9780769539829

The need of continuous blood pressure measurement is usable in wide spectrum of applications from physicians practice to home care applications. Many types of blood pressure measurement devices can be bought in electronics shops. All such devices are contact measurement devices which need to be in contact of human body (hand or foot mainly). Secondary they allow only one measurement per several minutes interval (typically ones in 10 minutes). Our goal is to develop a small device for noninvasive continuous measurement of blood pressure. This device must be a small battery powered embedded system which measure a blood pressure during a long time period and send this information remotely to operator's stations. We would like to try two systems of blood pressure monitoring. The first one is system with NIR CCD camera (Near Infra Red), which measure the wide changes of the blood vessels and the second one is system, which measure the pulse transmit time (PTT). At the end we can compare the systems and get information, which system will be a right way to obtain exact continuous blood pressure information.

关键词： Pulse measurements Blood pressure Pressure measurement Time measurement Charge coupled devices Charge-coupled image sensors Biomedical monitoring Battery charge measurement Humans Foot

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Design and Realization of Low Cost Discrete PSD controller for Power Electronics Applications

Design and Realization of Low Cost Discrete PSD Controller f...

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International Conference on computer engineering and Applications (ICCEA)

作者： Ondrej Krejcar Michal Tutsch Robert Frischer Ivo Spicka Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Automation and Computing in Metallurgy Faculty of Metallurgy and Materials Engineering Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424460793;9780769539829

Most systems are controlling by common PID controllers. These PID controllers are available in variety possibilities. They are divided by types of controlling systems, by speed of action interference, by complexity, by robustness etc. Most of industrial controllers are very expensive and except of some basic setting they are not offering any other way, how to involve into controlling process. On the other side, developing new analog controller to control simple systems is not reasonable in financial or time issue. That's why we decided to build simple, discrete controller and implement its algorithm into single chip eight bit microcontroller (MCU). This discrete controller - PSD - is characteristic its simplicity and variability. It can control plenty of less complicated systems by a mere change of its characteristic parameters. Thanks to modern approach is possible to create a full-featured controller including power action element on an area equal to 7cm 2 .

关键词： Costs Power electronics control systems Three-term control Interference Robust control electrical equipment industry Industrial control Process control Microcontrollers

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