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Heart rate meter
Šeda, Jan ; Rampl, Ivan (referee) ; Chmelař, Milan (advisor)
The aim of the Bachelor thesis is summary of pulse measurement facilities. Heart pulse has been one of the basic measurable quantity in medical science for thousands of years. The basic quality of the given value is accuracy. The analyse of necessity of accuracy in methods for medical practice and diagnostic is the second point of the thesis. The third and most crucial point is heart pulse meter itself – it will be described in terms of mechanics, electrics and software. System based on optical measurement has been chosen in semestral project. Furthermore, accuracy of designed meter will be tested.
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Three-phase sinusoidal pulse width modulation algorithms
Rudolf, Ladislav ; Červinka, Dalibor (referee) ; Klíma, Bohumil (advisor)
The main theme of this bachelors‘s thesis is to introduce readers into the algorithm of generating three-phase sinusoidal pulse width modulation. Main attention is concentrating to methods of generating Pulse width modulation method such as comparate PWM modulation technique and space modulation of voltage vector SVM. The functional units of algorithms are analysed and described from the basics. In addition, this project describes the basic analog solutions and even the implementation of the PWM modulator into signal processors DSP56F800.
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Photopletysmograph with evaluation of recorded lines
Vyskočilová, Marta ; Sekora, Jiří (referee) ; Chmelař, Milan (advisor)
Bachelor thessis deals with the methods of measurement of tissue volume with plethysmographic method focusing on photopletysmography. This method is used to determine the reactivity of blood vessels and blood flow to the quality of the investigated tissue. For shooting plethysmographic curve was designed and made device that communicates with the computer via multifunction NI USB card. For further signal processing was designed the virtual instrument in programming environment LabVIEW and device function was tested on test subjects.
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Heart rate measurement system with wireless data transmission
Valenta, Jakub ; Arm, Jakub (referee) ; Michalík, David (advisor)
The presented Bachelor's thesis covers the topics of designing and manufacturing a device used for measurement of a car driver's pulse frequency. An electrocardiogram is used to measure cardiac activity. The measured data is sent wirelessly to a local server where it's stored in a prepared database. Correct function of the device is demonstrated through an experiment performed in the second part of the work.
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Conductive model of human tissue for electroporation purposes
Zelinková, Kateřina - Šarlota ; Cipín, Radoslav (referee) ; Novotná, Veronika (advisor)
This thesis solves the issue of the distribution of the high voltage pulse at the electroporation of the arget ablation zone. For futher examination of influence electroporation was necessary to first understand theoretically electrical charakter of cells and replace with basics eletrical circumferential elements (RLC). Based on this knowledge, theoretical prerequisites for experimental measurements were derived. Theoretical assumptions were then verified by experimental measurements. In the measurement, the assumptions found were confirmed, but significant performance losses were identified. A new catheter was designed to reduce the loss. Because the production of a new catheter is not economically disadvantageous, the properties of the new catheter were first tested using the simulation cloud environment SIMSCALE, where the heating of the heart tissue after the application of the electroporation pulse was monitored. Furthermore, the electroporation process was simulated in the FEMM program, where emphasis was placed on the propagation of cardiac tissue tension.
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Development of UHV STM/AFM
Pavelec, Jiří ; Neuman, Jan (referee) ; Kalousek, Radek (advisor)
The main focus of the thesis is on the actuator, which is used for nanopositioning of laser beam in-site AFM (Atomic Force Microscopy). The appropriate shape of supply pulse and frequencies were searched and optimized. They make slip-stick motion of the piezo actuator. Possibilities of solving troubles with UHV (Ultra High Vacuum) are described on the basis of experiment and simulation.
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Development of a linear stage actuator for UHV STM/AFM
Pavelec, Jiří ; Jiruše, Jaroslav (referee) ; Šikola, Tomáš (advisor)
The aim of this diploma thesis is to develop a linear positioning stage for Ultra High Vacuum (UHV) environment. Simple prototypes of the linear positioning stage were designed and incorporated as part of a multiaxis sample manipulator for a UHV Scanning Tunneling Microscopy / Atomic Force Microscopy (STM/AFM). Different types of position encoders and linear guideways are discussed. Implementation of the homodyne interferometer as an optimization tool for a slip-stick based linear stage is described. Scalar diffraction theory is used to model the diffraction grating optical position encoder behavior.
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Hand-held remote control tentacles in hazardous areas
Koubík, Martin ; Ivan,, Krejčí (referee) ; Pásek, Jan (advisor)
The aim of this theses is design of the electrical diagram for controlling stepper motor using incremental encoder. The proposed scheme is capable of processing signals from the incremental rotary senzor of position to signals DIR/PULSE for a stepper motor. Futhermore, this work deals with the selection of elements available in the market for electrical wiring of the device. The work is also deals with the creation of the program for the PLC in Tia Portal to control gripper and marginally discusses the various forms of unsafe environments.
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Heart rate measurement using pulse oximetry on unconventional parts of the human body
Varmužová, Zdeňka ; Mrnka, Michal (referee) ; Cupal, Miroslav (advisor)
This study deals with the method of measuring heart rate using pulse oximetry. It describes the basic principles of this method for determining both heart rate and blood oxygenation. It examines the possibilities of placing the sensor on non-standard places of the human body. It also discusses the possible shortcomings of the method as well as the inaccuracies of measurements in certain places on the body and the possibilities of mounting the sensor and the use of the product in ordinary life. Later it presents the design for the heart rate measuring device used on the selected body part, that is forehead, and compares it with commercialy available products.
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