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Detection of eyes in facial images by means of Hough transform
Janovič, Tomáš ; Čmiel, Vratislav (referee) ; Walek, Petr (advisor)
The thesis discusses the detection of eyes in facial images by means of Hough transform. It is dedicated in the necessary preprocessing of the image, especially in edge detection. Further it discusses the Hough transform itself and describes the method for detection of simple shapes such as lines and circles. Subsequently, the thesis illustrates the implementation of Hough transform for detecting circles along with an algorithm evaluating Hough space. The last part contains the results and an assessment of detection algorithm along with a discussion of utilization the Hough transform for detection of eyes in facial images.
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The Autonomous House or Living Grid-off
Chlebný, Radek ; Šlezingr, Jan (referee) ; Macháček, Jan (advisor)
This thesis deals with energy self-sufficiency focusing on the independence of the electric grid. Basic line emanating project form a concrete proposal for autonomous energy supply system. Emphasis is placed primarily on photovoltaic systems, electric energy accumulation and selection of individual components of such a system. Another important part of the thesis is also an economic evaluation of design variations. The thesis also deals with a market research, and thereof derived benefit assessment of each technology. The accompanying chapters are then devoted to the history of autonomous life style or classification of buildings according to their energy performance.
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Design of modular accumulation system
Janek, Ondřej ; Klusáček, Jan (referee) ; Morávek, Jan (advisor)
The bachelor's thesis deals with the theoretical introduction to batteries and the design of a modular storage system. The first three parts focus on the theory, which discusses basic concepts such as electricity accumulators, the distribution of lithium cells with a focus on the most important LiFePO cells and a description of the safety system. The second part deals with the specific design of the system. That is, the design of the electrical diagram, the choice of cell and switchboard or the calculation of the total budget.
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Fast charging of EV vehicles - overview of technologies
Boršoš, Adam ; Charvát, Pavel (referee) ; Fišer, Jan (advisor)
Charging speed is one of the key parameters that affects the attractiveness of electric cars for drivers. Therefore, it is important to determine the methods that can charge the electric car as quickly as possible. An overview of electric vehicle charging technologies and the identification of those that are considered fast charging has been made. It has been found that the fastest technology is DC charging. A list of six connectors that allow this charging has also been created. These were then compared. An overview of charging networks, that enable fast charging, was made in the next chapter. The three largest providers of charging stations in the Czech Republic and also the two that specialize in fast charging were listed. The topic of battery cooling is also related to charging. Therefore, the following chapter provides an overview of technologies that are used to cool batteries. The last part focuses on the factors that cause the degradation of batteries. An overview of the four main causes of degradation and their effect on the battery was demonstrated.
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Design of small vertical milling machine
Michele, Jiří ; Blecha, Radim (referee) ; Blecha, Petr (advisor)
This diploma thesis designs a small vertical CNC milling machine. The thesis includes selection of suitable structural design of the machine based on market analysis and requirements. The listed components, constructional calculations and 3D model are chosen in order to minimize the costs.
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Determination of the most suitable ratio of cathode materials for the lithium-sulfur battery system
Benešová, Petra ; Kazda, Tomáš (referee) ; Jaššo, Kamil (advisor)
This master's thesis deals with a topic of determination of the most suitable ratio of cathode materials for the lithium-sulfur systems. The first two chapters provide a general introduction to the topic of electrochemical energy sources and present the commonly used primary and secondary battery systems with emphasis on their characteristics and applications. The core of the theoretical part is dedicated to lithium-ion and lithium-sulfur batteries, their working principles along with the benefits or drawbacks related to the particular systems, and widely used materials. The experimental part briefly comments on determining the suitable electrode paste preparation method, the subsequent main part is focused on evaluation of electrochemical performance of cells using different ratios of cathode materials. Five samples of cathode materials were prepared, where the sulfur ratio is in range from 64 to 88 wt. %. Finally, the comparison of all prepared ratios in terms of their electrochemical properties is provided.
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Low-Voltage Traction Drive with a Fuel-Cell
Hejkrlík, Jan ; Singule, Vladislav (referee) ; Richter, Aleš (referee) ; Vorel, Pavel (advisor)
The main aim of this work is a development of electric car. This car has fuel cells as a primary source of electrical energy which will be performed with regard to the maximum roll-out and to maximize the efficiency of hydrogen conversion into electricity. The first part is dedicated to the concept of drive as a whole, the second part is dedicated to solving vehicle dynamics. The third part describes the design of mathematical models of drive components. Part four gives the results of simulations of traffic on the route at different ways of managing fuel cells and various vehicle speeds.
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Uninterruble Power Supply (UPS)
Junek, Michal ; Sekora, Jiří (referee) ; Chmelař, Milan (advisor)
This thesis is intent on quality and safety of electrical energy supply from distribution network. There are describe solutions to reduce or to remove the low quality phenomena of electrical energy supply. The thesis is mainly intent on uninterruptible power systems (UPS) as frequently using systems. There are desciribe systems normalization, topology, choosing and limiting disturbing factors. This thesis is intent on designing AC inverter.
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Optimization of hydraulic system for milling machining center
Smíšek, Tomáš ; Ranuša, Matúš (referee) ; Nevrlý, Josef (advisor)
The bachelor thesis is focused on the design of optimized solution of the hydraulic system for milling machining centre. The main points of this work are to assess the current condition, design optimization solutions, construction calculations, final optimized solution and summary of the optimization. The contracting company is HYTEK Ltd. dealing with construction of hydraulic equipments.
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Design of a photovoltaic power plant with battery storage for a family house
Pavlíček, Michal ; Maule, Petr (referee) ; Vaněk, Jiří (advisor)
This bachelor thesis deals with the design of a photovoltaic power plant with a battery storage for household purposes. In the theoretical part are mentioned principles and explanation of the function of photovoltaic cells and accumulators. The thesis also deals with the description of photovoltaic systems and the system of accumulation of energy in accumulators. In the final part are the system and legislative conditions analyzed. In the practical part, the photovoltaic power plant with battery storage for the home and its economic evaluation is proposed.
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