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International Multiconference on computer science and Information Technology, IMCSIT

作者： Jan Kordas Petr Wagner Jiri Kotzian Department of Measurement and Control Electrical Engineering and Computer Science SB-Technical University of Ostrava Ostrava Czech Republic Department of Measurement and Control Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic

This article deals with the control of mobile embedded devices via wireless transceiver. The only way how to control the mobile devices such as robots, is to use a wireless data transfer. The possible wireless transceiver solution using the nRF24L01 transceiver by Nordic Semiconductor, which works in license-free worldwide 2.4 GHz ISM frequency band, is presented. Overview of this chip is included at the beginning of this article. The main part of this article deals with the design of a communication protocol. Then some optimizations of this protocol to improve its performance and determinism are discussed. In the last part, the results of measurement of some data transfer characteristics are presented.

关键词： Mobile communication Field-flow fractionation Transceivers Wireless communication Information technology computer science

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Use of adaptive filtering for noise reduction in communications systems

Use of adaptive filtering for noise reduction in communicati...

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International Conference on Applied Electronics, AE

作者： Radek Martinek Jan Zídek Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VšB Technical University of Ostrava Ostrava Czech Republic

This article deals with noise reduction in modern communication systems. Primarily it focuses on cases where conventional filtering techniques based on linear filtering fail. It is modern based approach to adaptive filtering. The article presents a comprehensive hardware and software solutions to the adaptive system using the two main leaders of adaptive LMS (least mean square) and RLS (recursive least squares) algorithms. Adaptive system for noise reduction in radio (mobile) communication is designed in Matlab. This system has its practical use in communication especially in noisy environments (transport, factories, sporting events, etc.).

关键词： Adaptive filters Finite impulse response filter IIR filters Noise Filtration Least squares approximation

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Earliest computer vision systems in Poland

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Advances in Intelligent and Soft Computing 2010年 84卷 3-13页

作者： Tadeusiewicz, Ryszard Faculty of Electrical Engineering Automatic Control Computer Science and Electronics Department of Automatic Control AGH University of Science and Technology Poland

ISBN: (纸本)9783642162947

In the paper is presented the brief history of research conducted in Poland (at AGH University) in the area of image processing, analysis and recognition. The history is connected with changes of the technology used for problem solving. First systems are build from the separate integrated circuits of low and medium scale of integration, after this we develop some systems build on the base of VLSI elements, and now the new systems are constructed on the base of FPGA technology. Nevertheless all the time scientific group from AGH was conducted research in technological applications of vision systems. At 70th and 80th years of XX century it was pioneer works devoted to building of second in Poland and one of the first in Europe systems for computer processing of the images, now research is dedicated mainly toward real time image processing systems. © 2010 Springer-Verlag Berlin Heidelberg.

关键词： Problem solving

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Solutions of hardware platform for Biotelemetric Systems

Solutions of hardware platform for Biotelemetric Systems

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International Conference on Applied Electronics, AE

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

This paper describes one part of our Biotelemetric System. This part is hardware platform from preprocessing of ECG signal. In order to real time visualization of ECG data, we need measure and process real data from ECG device. This paper discusses main possibilities to solve this problem. First possibility is using of commercial devices, such as embedded PCs, PDAs and wireless ECG unit BlueECG communicating via bluetooth. Suggests major problems and disadvantages of their use and offers possible solutions. This possibility is construction of our own purpose-built equipment. Advantages of our own equipment are its low power consumption and collaboration with mobile devices with limited computing capabilities. In the end we describe the real-time response time of packet parsing problem.

关键词： Electrocardiography Batteries Operating systems Mobile communication Battery charge measurement Personal digital assistants Data visualization

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Performance test of multiplatform real time processing of biomedical signals

Performance test of multiplatform real time processing of bi...

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IEEE International Conference on Industrial Informatics (INDIN)

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

The paper deal with a problem of a data collecting and visualization of several biomedical signals from patients by mobile embedded monitoring stations. measurement devices were used in real tests. Due to a problem of real time processing a 12 channels ECG from ECG device by Bluetooth to mobile stations, packet parsing as the one problem part of data processing chain, is presented and solved by two possible solutions. Mobile embedded monitoring stations are based on Microsoft Windows Mobile operating system. The whole system is based on the architecture of .NET Framework, .NET Compact Framework, .NET Micro Framework and Microsoft SQL Server.

关键词： Testing Signal processing Electrocardiography Data visualization Patient monitoring Biomedical monitoring Biomedical measurements Bluetooth Data processing Operating systems

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Software solutions for implementation of biotelemetric system

Software solutions for implementation of biotelemetric syste...

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International Conference on Applied Electronics, AE

This paper describes development of a biotelemetric system and problem of real time processing of ECG signal. In this case of signal processing ECG CorBelt primarily on mobile embedded monitoring stations. The Whole system is based on Microsoft product as Windows Mobile, Microsoft SQL Server, .NET Micro Framework, .NET Compact Framework and .NET Framework. On paper is deal with ECG measurement devices and there are evaluated pasted real tests. Problem in processing of ECG signal is quantity of transfered data. Commercial mobile devices can't processing this data on Real Time. Our paper are described possibilities of parsing of this ECG signal. Visualization of data is solved by small userfriendly application created in WPF (Windows Presentation Foundation) and Silverlight application. This application was created in development environment Microsoft Expression Blend and was subjected to stress tests. This application and tests results are presented too.

关键词： Electrocardiography Data visualization Servers Mobile communication Real time systems Databases Wireless communication

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User adaptivity features of secured biomedical user adaptive system

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Advances in Intelligent and Soft Computing 2010年 80卷 155-164页

作者： Janckulik, Dalibor Motalova, Leona Krejcar, Ondrej Czekaj, Petr Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB Technical University of Ostrava 17. Listopadu 15 Ostrava Poruba 70833 Czech Republic

ISBN: (纸本)9783642149887

User Adaptive Systems (UAS) are growing in past time along with expansion of intelligent ubiquitous systems to every piece of embedded device around us. These systems provide a many of interesting and useful services to support our day life needs in all areas include biomedical world of our bodies. Every such service need however to provide their results by some kind of interface. Therefore the need of a simple, intuitive and graphically attractive interface is much appreciated. Our chapter is focused to several areas of user interface design, user interface adaptivity and visualization. In all areas of developed system we implement secured ways. © 2010 Springer-Verlag Berlin Heidelberg.

关键词： User interfaces

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RT visualisation using aJile aJ-80 Real Time embedded platform

RT visualisation using aJile aJ-80 Real Time embedded platfo...

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Roedunet International Conference (RoEduNet)

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

ISBN: (纸本)9781424473359

This work deal with a possibilities of using an aJ-80 embedded JAVA processor in real usage. Microprocessor aJ-80 join together the advantages of programming in a higher programming language (as Java) and the system of one-chip controlling components (ATMEL, MICROCHIP, PIC, MOTOROLA etc.). Tested platform is suitable for Real Time - RT. We found several problems suitable for testing of the processor aJ-80 and its RT features to evaluate test platform. Based on the evaluation, the performance of the hardware program of the processor aJ-80 is very effective. In this respect, the product is recommended to use in many hard RT areas.

关键词： Visualization Java computer languages Microprocessors Testing Hardware Finite impulse response filter control systems Embedded system Filtration

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Dataflow Optimization Using of WiFi, GSM, UMTS, BT and GPS Positioning in Mobile Information Systems on Mobile Devices

Dataflow Optimization Using of WiFi, GSM, UMTS, BT and GPS P...

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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;9780769539829

Use of various wireless communications network standards or GPS for positioning is well known from countless previously published research articles. Joining of positioning principles with data artefacts prebuffering can provide a many advantages in using of mobile devices as a clients of remote server on-line systems. On of the key aspects can be seen in rapid increasing of data throughput of download connection (downlink). The user requested data artefact can be preloaded to mobile database cache (SQL Server CE), from where it is accessible through a user software application. Accessing time of artefacts from mobile cache (physically located on SD Card) is fraction in compare to a classical on-line accessing the data artefact from server through a web services.

关键词： GSM 3G mobile communication Global Positioning System Information systems Wireless communication Communication standards Standards publication Network servers Throughput Downlink

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Using of Ubiquitous Computing principles to develop a mobile user adaptive system framework

Using of Ubiquitous Computing principles to develop a mobile...

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Roedunet International Conference (RoEduNet)

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

ISBN: (纸本)9781424473359

Ubiquitous Computing (UbiCom) is idea which describe an information and communication technology systems which enable information and their tasks to support intelligent human computer interface, which is everywhere to use and also the technology background is invisible to user. Paper deal with a using of UbiCom principles to develop a mobile user adaptive system framework based on Predictive Data Push Technology (PDPT) Framework and Biotelemetrical Monitoring System (BMS) as two joined parts of complex User Adaptive System (UAS) framework. Main focus is in contribution of UAS to user or patient and his life quality.

关键词： Ubiquitous computing Mobile computing Adaptive systems Bioinformatics Biosensors Power system modeling computer interfaces Pervasive computing Communications technology Humans

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