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Measuring temperature inside PC
Rataj, Tomáš ; Kolka, Zdeněk (referee) ; Michálek, Václav (advisor)
This master’s thesis deals with measuring temperature inside personal computer. The main goal of this work is to develop tool which is able to measure temperatures in several places, display a store the values. Theoretical section is concentrated on selection of temperature sensor, that have suitable interface for microcontrollers and has sufficient accuracy for this application. In next part there is complete hardware and software design of instrument. Software solution is based on real-time operating system. Device is projected as a battery-operated compact tool. With created application for personal computer, measured data can be downloaded through USB and displayed in graphic format.
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Minidarpa robot - electronic layout design
Groulík, Tomáš ; Burian, František (referee) ; Kopečný, Lukáš (advisor)
Bachelor`s thesis is bent on problems mobile robotics. In forepart is genarally circumscribed architecture AVR and individual used microprocessors. Next part is intend for distance evaluation by the help of ultrasonic sensores and concrete description of used modulus. Last part is specialized in motor control and regulation of DC motor. There are described possibilities of motor control by the help of PWM and used draft of motor control and projecting of regulator.
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Microprocessor Controlled Power Measurement System for Frequencies below 10GHz
Klíma, Martin ; Lukeš, Zbyněk (referee) ; Urbanec, Tomáš (advisor)
The aim of this work is to design a microprocessor controlled power measurement system which is based on the logarithmic detector AD8317, then to create a printed circuit board and to test its functioning. The logarithmic detector AD8317 is acceptable for measurement of high frequency signal’s power of the level between approx. –55 dBm and – 3 dBm in the frequency bandwidth of 1 MHz to 10 GHz. Its output provides DC voltage which is corresponding to the decibel-scaled level of the input signal. This is suitable for A/D conversion and digital processing by the microprocessor. The result of the work is a complete measurement system.
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Design of programmable control system
Trpiš, Michal ; Říha, Kamil (referee) ; Koula, Ivan (advisor)
The goal of diploma thesis is design of programmable control system. This system can be used for regulation of basic parameters in an aquarium. Primary parameters for selection of this device are the price and the easy realization of final device. In first step there are selected parameters, which are needed to control. In second step there is described which kind of sensors can be used for measuring of selected parameters and suitable regulation of necessary parameters. The device is supposed to communicate with PC by USB and this communication is going to be compatible with an old RS-232. Device must be completed with hardware design. Device will be in principle system with real time, that is the reason why device will contain microcomputer. A microcomputer must communicate with other integrated circuit in the device and it supposes to communicate with PC. In specific chapter it will be described, how many different kinds of communication it is possible. For microcontroller it is necessary to create a program, which can figure the measured parameters and it also allows setting up the way how parameters can be regulated. Measured parameters are supposed to storage in the specific memory for the later interpretation. The completely device must be put into a case, which is calculating with a damp place. There must be created a host application for PC. This application suppose to detect if device is connected, figure measured parameters and also allows to set up the way, how to regulate the parameters and display the storages parameters. The application is suppose to run on the operation system created by Microsoft (Windows XP and Windows Vista or later). Diploma thesis contains a problem of the analysis which parameters may be controlled and the way how it can be controlled. There will be selected the sensors, which are suppose to measure and there will be described the basic data transfer and the specifications. It will also contain description of the hardware and software implementation of the device and possibilities of the user’s settings. There will be described the host application and its possibilities. Finally there will be described a functionality of the device and the host application. It will be also imagined some system upgrades for future.
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Digital secondary clock
Hortvík, Martin ; Mašek, Petr (referee) ; Marada, Tomáš (advisor)
The aim of this thesis is to design and implement control electronics for digital secondary clocks. The first part is focused on familiarization with the issue of the use of secondary clocks. Subsequently, the work deals with the design of electronics for generating minute pulses. The first part of the proposal is to ensure the correct voltage size and polarity of pulse. The exact timing pulses are provided by a pair of control circuits, Atmega8 microcontroller and RTC. The last part describes the procedure of realization of electronics by making schema, design and manufacture PCB, circuit revive and the implementation of the module into case.
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RFID acces system realization
Mikšíček, Pavel ; Jančík, Stanislav (referee) ; Marada, Tomáš (advisor)
This bachelor thesis deals with possibilities of using RFID technology in intelligent buildings. The first part of thesis describes main parts of the technology, principle functions and gives examples of applications in various fields. The second part deals with selection suitable RFID technology on frequency 125 kHz for manufacture the functional prototype of the device, design hardware for realization and discusses security. There is a detailed description of device functions. In the last part thesis describes the implementation process from drawing schematics to design and manufacture of printed circuit boards and testing prototype. The knowledge gained in the creation of this work are summarized in the conclusion.
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Contactless revolutions counter for rotary machines
Zatloukal, Jiří ; Vdoleček, František (referee) ; Zuth, Daniel (advisor)
The Bachelor's Thesis consists of two parts. At first it deals with methods of the speed rotary measurement summary from history to the current methods applied. In the second part we can see a project and the actual production of the strobe rotation speed scanner and IR rotation speed scanner. All it is implemented in the solderless breadboard and under employment of the development kit EvB 4.3 based with the microcontroller Atmega 644p.
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Educastion kit for working with microcontrolers AVR Atmel
KUBEŠ, Miroslav
This thesis deals with design and production of teaching kits with Atmel AVR microcontroller. This kit includes a processor board and modules, which will connect to the board. It describes the equipment needed for software design and programming of microcontroller and technological processes to create a kit. Also, it will find the basic theoretical knowledge to work with the ATmega8535 microcontroller. Kit along with a disc on which are recorded all the diagrams, pictures and programs created by me, will be attached to the thesis.
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