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2010 International Conference on Networking and Information Technology, ICNIT 2010

作者： Krejcar, Ondrej Horkem, Jindrich Department of Measurement and Control Center for Applied Cybernetics VSB Technical University of Ostrava 17. Listopadu 15 70833 Ostrava-Poruba Czech Republic Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB Technical University of Ostrava 17. Listopadu 15 70833 Ostrava-Poruba Czech Republic

ISBN: (纸本)9781424475773

The purpose of this project is to allow a free movement of Building Management System (BMS) operator in all controlled building area. The current state of the problem consists in an impossibility of operator's movement from control centre. We found a solution in using of mobile devices like PDA with a client of BMS to allow a remote access to all alarms of system. Solution consist in use of web services and web methods interface on BMS server, where is possible to connect a remote PDA client to interchange a requested info about alarms and trends. A web services and mobile client application was created using a Microsoft Visual Studio 2008. Future trends are also discussed to provide a solution for small and mid size constructions in direction of use a Microsoft .NET Micro Framework. © 2010 IEEE.

关键词： Web services

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Use of accelerometers for material inner defect detection

Use of accelerometers for material inner defect detection

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International Conference on applied Electronics, AE

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

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 Vibrations Software Conferences Distortion measurement Converters Unified modeling language

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Notice of Retraction: Material inner defect detection by a vibration spectrum analysis

Notice of Retraction: Material inner defect detection by a v...

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International Conference on Mechanical and Electronics engineering (ICMEE)

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

This article has been retracted by the publisher.

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Combination of PCA and undecimated wavelet transform for neural data processing

Combination of PCA and undecimated wavelet transform for neu...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Sajad Farashi Mohammad D. Abolhassani Yousef Salimpour Javad Alirezaie Biomedical engineering of Medical Physics and Biomedical Engineering Department Tehran University of Medical Sciences Iran Centre of Science & Technology Tehran University of Medical Sciences Iran NeuroScience and NeuroEngineering in School of Cognitive Sciences Institute of Studies in Theoretical Physics and Mathematics Tehran Iran Research engineer in research Centre of science and technology in medicine Tehran University of Medical Sciences Tehran Iran Department of Electrical and Computer Engineering faculty of engineering and applied sciences Ryerson University Canada

Nervous system conveys information by electrical signals called `spikes', therefore, spikes detection and sorting are challenging topics in the neural data processing. The principal component analysis (PCA) is a convenient tool for clustering spikes; however it has some disadvantages for closely shaped and overlapped spikes. For such the cases, an algorithm based on the combination of the principal component analysis and undecimated wavelet transform, is proposed to enhance the cluster formation from the spikes mapping. These results indicate that the principal component analysis used in combination with the undecimated wavelet has a better performance in the spike sorting. This can lead to more compact and separate clusters in comparison with the PCA clustering and more efficient spike sorting.

关键词： Principal component analysis Clustering algorithms Feature extraction Wavelet coefficients Classification algorithms

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Full scale application support on Windows Mobile devices by data prebuffering using SQL CE database

Full scale application support on Windows Mobile devices by ...

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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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Early diagnosis of dementia based on intersubject whole-brain dissimilarities

Early diagnosis of dementia based on intersubject whole-brai...

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IEEE International Symposium on Biomedical Imaging

作者： S. Klein M. Loog F. van der Lijn T. den Heijer A. Hammers M. de Bruijne A. van der Lugt R.P.W. Duin M.M.B. Breteler W.J. Niessen Biomedical Imaging Group Rotterdam Departments of Radiology & Medical Informatics Erasmus MC-University Medical Center Rotterdam Rotterdam Netherlands Pattern Recognition Laboratory Faculty of Electrical Engineering Mathematics Computer Science Delft University of Technnology Netherlands Department of Neurology Erasmus MC-University Medical Center Rotterdam Rotterdam Netherlands Neurodis Foundation CERMEP PET Centre Lyon France MRC Clinical Sciences Centre and Division of Neuroscience and Mental Health Imperial College Hammersmith Hospital London UK Department of Computer Science University of Copenhagen Copenhagen Denmark Department of Radiology Erasmus MC-University Medical Center Rotterdam Rotterdam Netherlands Department of Epidemiology & Biostatistics Erasmus MC-University Medical Center Rotterdam Rotterdam Netherlands Imaging Science & Technology Department of Applied Sciences Delft University of Technnology Netherlands

ISBN: (纸本)9781424441259

This article studies the possibility of detecting dementia in an early stage, using nonrigid registration of MR brain scans in combination with dissimilarity-based pattern recognition techniques. Instead of focussing on the shape of a single brain structure, we take into account the shape differences within the entire brain. Imaging data was obtained from a longitudinal, population based study of the elderly. A set of 29 subjects was identified, who were asymptomatic at the time of scanning, but were diagnosed as having dementia within 0.7 to 5 years after the scan, and a set of 29 age and gender matched healthy controls were selected. Each subject was registered to all other subjects, using a nonrigid registration algorithm. Based on statistics of the deformation field in the brain, a dissimilarity measure was calculated between each pair of subjects, yielding a 58×58 dissimilarity matrix. A kNN classifier was trained on the dissimilarity matrix and the performance was tested in a leave-one-out experiment. A classification accuracy of 81% was attained (spec. 83%, sens. 79%). This demonstrates the potential of whole-brain intersubject dissimilarities to aid in early diagnosis of dementia.

关键词： Dementia Brain Pattern recognition Shape Radiology computer science Biomedical imaging Senior citizens Diseases Biomarkers

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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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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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