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Planar LED Display Application
Houserek, Jiří ; Kosina, Petr (referee) ; Šandera, Josef (advisor)
This coursework deals theoretical with design and construction of the electronic clocks controlled by DCF77 signal, which is broadcasted from Germany. This device will be used as alarm and is able to show date. There is used display, which consists of 8x32 LED matrix in a modular, which is connected to main board over the edge. This device is controlled by microcontoller PIC16F887A. There are described displays, microcontrollers and DCF time signal.
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Remote controled robot unit
Kratochvíl, Robert ; Kosina, Petr (referee) ; Pavlík, Michal (advisor)
Labor is handling of the programming movement functions and construction of the simple robot, a design of double-layer printed circuit boards for its implementation and realizes remote control. Motional functions were tested using the test, hand-soldered, double-layer board implemented on soldery bay of joints and demonstrated on prototype. The movements themselves have been simulated using LEDs, the remaining parts were up to the type of casing the same with a planned final design of the board. Using the prototype we demonstrated complete exact movements. For the control microcontroller was chosen for the board of the robot and controller ATMEGA16, communication takes place through USART bus of this microcontrollers. Programming was carried out in CodeVision and AVR Studio, design of printed circuit boards in the EAGLE.
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Future trends of the specific semiconductor components utilization
Chocholáč, Jan ; Kosina, Petr (referee) ; Běťák, Petr (advisor)
The bachelor thesis deals with discrete components such as Multiplexers and Sample-and-Hold. The central objective of this work is to provide a description of how the components work, to outline a survey of their construction design, and to define the relations between the product series. By the help of graphic diagrams, various aspects of difference and comparison related to the manufacturers are specified in order to complement the main analysis.
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Pressure sensor made 3D structure
Hanus, Martin ; Pekárek, Jan (referee) ; Kosina, Petr (advisor)
This thesis deals with the points at issue of a 3D structure pressure sensor. The pressure sensor converts pressure into another physical quantity which is easier measure and which is processed subsequently. Usually ways of pressure sensing is for example capacitive, strain-gauge and optical. The 3D structures are constructed through the use of a LTCC technology, which can be laminated to create multi-layer structures, compared to standard high-temperature ceramics. Passive circuit components can be applied onto particular ceramic layers using either thin-layer or thick-layer technology. Practice part of thesis deals with several ways of construction a pressure sensor. First of all capacitive, strain-gauge and optical sensor and possible problems with construction individual sensors above all problems with lamination, cavity or burning
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Flow sensor
Symerský, Tomáš ; Psota, Boleslav (referee) ; Kosina, Petr (advisor)
This diploma thesis is divided into two parts - theoretical and practical. In its first, theoretical part, deals with the theory of fluid and gas flow, heat transfer and diversification of sensors for flow measurement working on the electrical principle. It also deals with thermodynamic principle, which can be used for measuring very small flow and low-temperature ceramics that is used to implement microcanals for sensing very low flows. The practical part of the thesis deals with the very simulation of the entire structure in the program “COMSOL Multiphysics” - both in 2D and 3D views. Then there is shown the implementation and measurement of the flow sensor in a low-temperature ceramics, working on a thermodynamic principle.
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Cutting module implementation into the Aurel ALS 300 trimming laser software
Štrympl, Martin ; Kosina, Petr (referee) ; Prášek, Jan (advisor)
is project deals with the implementation of a cutting module for trimming laser system Aurel ALS 300. The conversion programme designed to convert the Gerber format into the input laser format was written in C language. Integration of the conversion programme to the control programme of PROTOMAT laser was implemented in Visual Basic 6. The first part of the semester work describes the basic thick-film technology and the use of thick-film resistors trimming. An analysis of allowed input formats PostScript, DWG and Gerber follows. The Gerber format, which is analyzed in detail here, was selected as the input format for conversion. Input data of the laser Aurel ALS 300 are also analyzed. Finally the way of creation of the converstion programme and its use described here too.
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Capacitive sensor in low temperature co-fired Ceramic
Symerský, Tomáš ; Řezníček, Michal (referee) ; Kosina, Petr (advisor)
This bachelor thesis deals with theoretical knowledge of basic materials especially of a low-temperature ceramics, which enables creating multi-layer structures. Different defects occur by forming these structures, especially in the area of cavernas and micro-tubules. This thesis uses different methods which lead to an elimination of these defects. The thesis also deals with techniques which can be used to a realization of these sensors. Achieved knowledge helped to draft and realize the capacity sensor of flow and pressure in a low-temperature ceramics. The pressure sensor was tested by the load in the frequency spectrum, while the flow sensor was tested for different substances.
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Anodic bonding of sandwich structures
Urbánek, Petr ; Kosina, Petr (referee) ; Pekárek, Jan (advisor)
This master thesis deals with the technology anodic soldering. It focuses mainly on soldering sandwich glass-silicon structures. Describes the soldering method and highlights its advantages. Theoretically discusses the different methods used soldering these structures and assess their possible benefits. This work explores practical ways possible soldering methods on a particular device. These different soldering methods evaluated on the basis of achieved quality connections. This thesis examines the anodic soldering at low temperatures, while there are demands on the shortening of the technological process.
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Application interface for handling graphics in VHDL language
Vlček, Petr ; Kosina, Petr (referee) ; Bohrn, Marek (advisor)
The objective of this thesis is creating interface for the picture generator. The interface generates a VGA signal with possibility of 4bit color depth. The interface controls two chips of one port SRAM IS61 witch is supplied with Digilent Spartan-3 Starter Kit Board and comunicates trought FIFO blocks based on the shift register principle. Graphics interface generates lines and secondary forms, circles and secondary forms, fills area up and controles 2D transformations of picture.
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