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Pressure Sensors Based on Modern Nanotechnologies
Magát, Martin ; Hudec, Lubomír (referee) ; Vlach, Radek (referee) ; Vrba, Radimír (advisor)
This thesis describes utilization of a nanotechnology in new pressure sensors. Detailed analysis of individual principles are carrying on. And simulations and experimental models of sensors are developed. More detailed description is provided for new capacitive pressure sensor, which is manufactured using nanotechnology, including its model and analysis in order to improve its properties. The work deals with the emission pressure sensor which uses the principle of cold emissions, including analysis comparison of the measured values of the emission current from the applied nanotubes field and analysis to improve emissions performance.
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Pulse anodization of aluminium for nanoporous structures creation.
Bačová, Veronika ; Magát, Martin (referee) ; Hubálek, Jaromír (advisor)
Předkládaná práce se zabývá nalezením vhodných podmínek pro výrobu nanaporézní struktury na tenké hliníkové vrstvě. V této práci jsou popsány postupy výroby nanoporézních struktur a jejich přípravou. Vznikly póry o rozměrech 5–20 nm. Byla zkoumána závislosti proudové hustoty v zavislosti na přiloženém pulzu. Všechny výsledky byly zkoumány pomocí SEM analýzy. Byla použita cyklická volatmetrie pro stanovení redukčního napětí při depozici niklu a zlata.
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Design of regulated laboratory source with current measurement
Panáček, Jiří ; Šteffan, Pavel (referee) ; Magát, Martin (advisor)
This bachelor thesis deals with problematic and design of linear laboratory power supply. The first impulse start design of this device was requirement of simple and low cost laboratory power supply with good performance for debugging and measuring electronic circuits. This design keeps modern trend in lab power supplies with driving via microcontroller. This solution makes device easy to control and it is possible change program equipment.
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GPS position recording system
Kokeš, Ondřej ; Magát, Martin (referee) ; Kadlec, Jaroslav (advisor)
The system conducting an electronic record of drives employing GPS enables simply track the vehicle running and traffic. As vehicle is running, information is gathered and saved into the memory module, out of which the driver's report book is generated afterwards. The submitted work is involved in brief summary of possibilities that might be used during implementation of the project and furthermore during complete solution of such a system, hardware and software parts included.
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The USB Oscilloscope and Logic Analyzer with a Microprocessor
Pešl, Jiří ; Magát, Martin (referee) ; Šteffan, Pavel (advisor)
The content of this bachelor thesis is design of electronic measurement and diagnostic device to a computer or any other portable device as are modern mobile phones and PDAs. Designed system will be measure analog periodical signals in time in currently used ranges and discrete logic signals. Signals will be restored and displayed on the screen of any other device. Wherewith designed device will be communicate through USB 2.0 or Bluetooth interface.
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Microposition control device
Chmelík, Jan ; Magát, Martin (referee) ; Kadlec, Jaroslav (advisor)
This thesis deals with control of a micropositioning device. Aim of this study was to design a device that will control the piezzo-shift in three dimensions with adjustable speed and step-size. A further goal was to create a software for which allow to employ a user-defined shift profile to control the device. Actual construction of the device, based on a microcontroler Microchip 18F4550, is described in the practical section of the work.
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Inteligent battery charger controled by microcontroler
Burda, Petr ; Magát, Martin (referee) ; Pavlík, Michal (advisor)
Universal, smart battery charger NI-Cd, NI-MH, Li-Ion a Li-Pol batteries with adjustable voltage incremental rotary position sensor in the range of 0 -25 V and currnet up to 1 A load.The charger is controlled by microcontroller ATMEGA32 – 16PU Atmel and provides thermal protection and management of the chrging voltage depending on the temperature inside the battery pack or battery cells. Setting is made througth LCD screen to be displayed in addition to the set temperature, charging voltage and battery current. To save the profile is used EEPROM memory, which is contained in the microcontroller.
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Digital controlled analog guitar efects
Novotný, Jan ; Magát, Martin (referee) ; Pavlík, Michal (advisor)
This project contains theoretical part guitar effects and their setting about. Theoretical part continues in selection of parts for ddriving of effects and parts for the driver. Another parts are: get data from peripherys (switches, ratate encoders), using data, comunication between microcontrolers, setting effects and printing effects setting on graphical LCD. Practical part of this project is basic communication with graphical LCD, design and development of driver about.
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Precise adjustable power suplly
Pawlas, Andrzej ; Magát, Martin (referee) ; Kadlec, Jaroslav (advisor)
This bachelor´s thesis deals with the proposing precise switching power supply. This switching power supply works with a maximum of 99 % duty cycle. Input voltage is 12 V and output can be set in the range of 1.2 V - 11.9 V. Current can be a source of burden 0 A - 20 A. The entire power supply is controlled by microcontroller. While addressing the proposal switching power supply have been developed five prototypes. Last prototype works well, but the output appeared significant interference.
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