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PHpix interface board
Opioł, Zbigniew ; Matějka, Tomáš (referee) ; Kubíček, Michal (advisor)
This work investigates the interface and properties of an ionization radiation detector with the PhPix chip, which is the basis of a future large-scale detector for use in nuclear medicine. In the next stage, an IP core for communication between the processor system and the PhPix chips on the Zynq platform is designed. Furthermore, software for video transmission over Ethernet interface is developed.
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MPPT driver for small UAV
Košút, Martin ; Záplata, Filip (referee) ; Kubíček, Michal (advisor)
This thesis describes a design of a maximum power peak tracking controller for a solar cell array embedded on a wing of a UAV. Solar cells are used to both cover part of the UAV power consumption and (at suitable conditions) to charge onboard battery. As the UAV changes its position and attitude to the sun relatively fast, the lighting conditions on the solar cells change rapidly. Thus, it is necessary to implement a fast maximum power peak tracking regulator to ensure maximum efficiency of the system. The proposed design is based on commercial offtheshelf components. The implemented DC/DC converter, which represents the core of the regulator, is a combination of a stepup and a stepdown converter. Weight, dimensions end overall efficiency were the key optimization parameters of the design.
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Selection of Appropriate Forms of Financing Housing
Kubíček, Michal ; Dvořáková, Radka (referee) ; Meluzín, Tomáš (advisor)
This bachelor thesis focuses on options financing living in the Czech Republic. Firstly, there are described some basic terms and concepts which can be relised in immediate contact with this topic. Next part of the thesis describes some forms of living financing. For certain type of investor there were suggested some choices of financing hoousing, there are in short described. In following part there are mendioned individua advantages and disadvantages, icluding the suggestion.
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Switched battery charger
Špatenka, Vojtěch ; Kubíček, Michal (referee) ; Kovář, Jan (advisor)
My bachelor thesis deals proposal of switch battery charger and with an issue of charging lead-acid accumulators. It describes their attributes and charging characteristics. Futhermore, it describes a concept and a construction of a switch-mode power supply for charging of these accumulators. The design of a switch-mode power supply according to the programme PI EXPERT 7, the design of an impulsive compensator, the choise of a framework and a centre core, a full-scale scheme of a connection, the design of a PCB, a materials scheduling and their layout on the plate. A concept of controls of the switch-mode power supply using single-chip microprocessor C8051F320 HQ manufactured by Silicon Laboratories. A scheme of integration, a concept of the printed circuit board and a specification of components. At the end of the bachelor thesis was made a suitable chassis from the polycarbonate material. The results and the evaluation of the basic parameters of the of the switch-mode power supply are included.
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General purpose analog signal converter
Strážnický, Martin ; Povalač, Aleš (referee) ; Kubíček, Michal (advisor)
This work deals with the design of a galvanically isolated converter of continuous analog signals and the design of a galvanically separated converter of digital TTL signals to HTL signals. The device is complemented by a STM32 microprocessor, which ensures the connection of analog input and output. The result of the work is the circuit structure of individual units, the results of simulations of important units, complete data for the production of device and measured values of individual units.
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Small rotor dynamic balancer
Staněk, Michal ; Vyskočil, Pavel (referee) ; Kubíček, Michal (advisor)
Balancing of rotors is used to remove unwanted vibrations caused by uneven distribution of mass around the axis of rotation of the rotor. Operation of an unbalanced rotor may causes shortening of bearing life, fatigue of materials and deformation of shafts. This work deals with construction of a balancing machine (balancer). Because of its good properties, a soft bearing type balancer was chosen for construction. This type of balancer achieves higher sensitivity at the cost of calibration required for each type of rotor. To capture the magnitude of vibration electrodynamics sensors were chosen. To enter data and display results a microprocessor is used.
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Generation of the time duration pulse with adjustable delay
Toman, Vít ; Kubíček, Michal (referee) ; Šotner, Roman (advisor)
The bachelor's thesis is engaged on methods and possibilities of square impulses of basic parameters (impulse duration time and delay time) generation by 8-bit AVR microcontroller made by Atmel Corporation and by conception of the generator circuit. Impulse duration time and impulse delay time settings are managed by matrix keypad and they are displayed on matrix display. Impulse power characteristics depend on microcontroller's electrical power characteristics.
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FPGA based sound card for PC
Štraus, Pavel ; Kováč, Michal (referee) ; Kubíček, Michal (advisor)
This project deals with implementation of a first order Sigma–Delta AD converter on the FPGA. This ADC is design for an audio signal processing. ADC is build up partially from digital blocks implemented in FPGA (programmed using VHDL) and from few analog components placed external to FPGA. Output from ADC is PCM signal. Data from ADC is created UDP datagram, which is sent to PC via network connection. Income data are received in created program, which save data to text file. This text file is processing in MATLAB.
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Nano-ammeter with galvanic isolation
Šimka, Marek ; Kubíček, Michal (referee) ; Kolka, Zdeněk (advisor)
This bachelor thesis deals with all the aspects, that are important in the designing of the nano-ammeter. In theoretical part, there are described possible ways to measure electrical current of very low values. Other parts of the thesis describe all parameters, which are influencing measurement accuracy. These are, for example, unwanted and leakage currents, but also other parasitic phenomena that may occur. Thesis explains how to minimize unwanted currents and other influences. Practical section provides more detailed description of the proposed main scheme. There are also described components, that have been selected as the main parts of the nano-ammeter circuit. Subsequent part contains analysis of printed circuit board including all layers. Furthermore, the thesis deals with the realization of equipment and possible errors. The results of the bachelor are summarized in the last chapter.
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Development of high resolution RGB camera
Madeja, Jiří ; Kováč, Michal (referee) ; Kubíček, Michal (advisor)
Tato práce se zabývá výběrem vhodného obrazového snímače pro použití v kameře snímající rostliny ve vysokém rozlišení a návrhem vhodného obvodu pro propojení vybraného snímače (SONY IMX253) s vývojovou deskou Avnet MicroZed. Tato práce pojednává o jednotlivých parametrech obrazových snímačů podle kterých je vybírán vhodný obrazový snímač. Je vysvětlen proces výběru vhodného obrazového snímače a podrobněji popsány parametry vybraného snímače. Je naznačena problematika návrhu elektroniky a plošných spojů z hlediska požadavků vysokorychlostních obvodů a citlivých a specifických součástek jako je obrazový snímač. Je nastíněna konfigurace a programování obvodu Xilinx Zynq a nakonec je provedeno zjednodušené teoretické ověření funkčnosti navrženého modulu.
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