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ECG Signal Transmission via Ethernet
Bayerová, Zuzana ; Provazník, Ivo (referee) ; Sekora, Jiří (advisor)
The semestral thesis describes ECG signal compression methods designed to modify the data for transmission via communication channels. The thesis contains an introduction to Ethernet and explanation of communication in the network. The transport protocols TCP and UDP are discussed in more detail. In the practical part of the thesis was created two separate applications. The first application in the sender's computer opens a text file with the ECG signal. Loaded ECG signal is filtered by cascade of filters to eliminate interference. The resulting signal is displayed. A part of the application is the R wave detection, calculating the length of RR interval and heart rate. The application also allows to compress an ECG signal. ECG signal is sent via Ethernet network via UDP protocol for individual samples. Applications in the recipient's computer receives signal samples from the network. Recieved compressed data is reconstructed. The resulting ECG signal is displayed and there are again detected R waves, the length of RR intervals and sampling frequency are calculated.
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Indicator of Thunderstorm
Studený, Pavel ; Sekora, Jiří (referee) ; Chmelař, Milan (advisor)
The aim of this Bachelor thesis is a theoretical analysis of thunderstorms, lightning and their detection. The theoretical description then gradually moving towards designing their own detector. The detector will operate so that when a lightning activity captures pulses which generate lightning. Lightning will register using the attached counter. After the storm could be due to information from the counters to evaluate how strong the storm was.
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Motion Analysis
Hudec, Jiří ; Čmiel, Vratislav (referee) ; Sekora, Jiří (advisor)
Bachelor thesis is dealing with how to analyze human walk with Vicon camera system. In the first chapter are described elementary ideas for gait analysis and principal methods of Vicon system. There is also discussed basic layout of cameras in the laboratory and layout of markers attached at a human body. The second chapter is also about synchronisation of multiple cameras and description of CVS format. Further, in the third chapter are discussed four algorithms created in Matlab for a description of gait analysis. In the last fourth chapter are discussed the results of the software from Matlab and comparison these results with results made in the laboratory of gait analysis.
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Microcontroler based On Demand Pacemaker
Daniš, Václav ; Balogh, Jaroslav (referee) ; Sekora, Jiří (advisor)
Pacemakers have nowadays become an inseparable part of treatment in a wide range of cardiovascular diseases. The topic of this bachelors degree paper refers to and proposes the implementation of a functional type of ´On Demand´ pacemaker controlled by a microcontroller. The introductory chapters focus on a more detailed, theoretical familiarization with the complex issues of permanent heart cardiostimulation. In addition to the actual theory of pacemakers and cardiostimulation, the chapters also include those significant historical aspects in the evolution of permanent cardiostimulation, the basic structures of heart anatomy and the transmission system of the heart. Also included are the recording of heart activity and ECG analysis, both physiological and pathological. In the practical part of the paper I deal with the ´On Demand´ pacemaker controlled by a microcontroller with a firm (solid, strong, steady, fixed) repeating frequency inhibited by the R wave. Subsequently, a proposed system for its implementation is created. The next step is the creation of a scheme for the electrical connections and composition of the microcontroller programme. The final part illustrates the implementation of the model of the pacemaker itself, preceded by a verification of the efficacy of the connections in a non-solder field.
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Design of Hearing Aids in LabVIEW
Macíček, Ondřej ; Tannenberg, Milan (referee) ; Sekora, Jiří (advisor)
This thesis contains the block diagram of hearing aid, anatomy description of human hearing system and description of most important physical values in this problematics of hearing and sound. There are analyzed several types of hearing tests for diagnosis of the hearing loss level and some types of algorithms, which fit the frequency characteristic of patient's hearing loss too. Further this thesis contains interactive program of hearing aid, which has implemented equations for sound equalization.
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Feedback for active hand prosthesis
Trajlinek, Jan ; Sekora, Jiří (referee) ; Harabiš, Vratislav (advisor)
This thesis deals with the solution for feedback of active prostheses to ensure that it is as similar as possible to the biological somatosensory system, and at the same time to prevent any limitations to the patient and provide the patient with as much useful information about the sensual touch as possible. With regard to these factors, the system for the detection of forces acting on the limb and the subsequent transmission of this signal to the user´s limb is proposed. This system is designed particularly for an already constructed prosthesis manufactured by Ing. Štěpán Brázdil within the diploma thesis from 2020. The thesis describes the biological response, on which all substitutive and artificial responses are based on. The thesis then further describes these substitutive and artificial responses and aims to find solution, how the biological response can be more or less replaced.
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Function Generator with the Android Operating System
Neradilková, Aneta ; Čmiel, Vratislav (referee) ; Sekora, Jiří (advisor)
Function generators are equipments that generate a wide range of waveforms. This bachelor’s thesis introduces the function generator and Arduino platform. On the basis of familiarity with the function generator and the Arduino platform is designed proposal generator using Arduino kit and draft flowchart for generating four waveforms. This proposal is implemented and describes the different parts of the generator, hardware and software. The functionality of the generator is tested using an oscilloscope.
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Radiotherapy planning
Požár, Pavel ; Sekora, Jiří (referee) ; Kolářová, Jana (advisor)
This thesis deals with analysis of characteristics of ionising radiation. The equipments used for irradiation of pathologic findings are described. The thesis contains particular stages of planning algorithm with list of individual actions. Practical part contains a description of application made for irradiation simulation which includes brief explanation of working procedure with program. It also contains a description of individual functions of this application.
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Use of the Energy Harvesting Method
Dobrovolná, Terezie ; Králík, Martin (referee) ; Sekora, Jiří (advisor)
The bachelor thesis deals with the use of Energy Harvesting. It contains suggestions for obtaining electric power from alternative sources located inside the laminar box such as light, heat or vibration. Electricity is also used to power sensors and measure solid particles in the air. If a certain particle concentration is exceeded, the acoustic sensor alerts. The work also focuses on the compilation of a block diagram of the device, experimental construction and verification of the functionality of the entire system.
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Uninterruptible Supply of the Hospital Information System
Kučera, Josef ; Sekora, Jiří (referee) ; Fedra, Petr (advisor)
This bachelor thesis is focused on the proposal for an appropriate source of uninterruptible power supply (UPS) to the school server UBMI where is currently installed HIS (hospital information system) CLINICOM Corporate SMS. UPS should have ensure the protection of data being unfinished, secure off site and to inform the line voltage failure.
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