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Laboratory model of an machine for printed wiring
Posekaný, Jan ; Kaczmarczyk, Václav (referee) ; Zezulka, František (advisor)
Production of printed circuit boards using three-axis CNC milling machine is suitable for small batch production. Milling machine consists of three axes, which are controlled by stepper motors. Controlled by a PC connected to the control electronics to communicate over the serial line. Input data is exported from the Eagle design software. The core of the control unit´s processor family, the AVR ATmega16, motor drivers for the ATmega8. Transfer between PC and the device is implemented using a virtual person through USB.
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Design of switch-mode audio power amplifier
Macek, Libor ; Petržela, Jiří (referee) ; Brančík, Lubomír (advisor)
This paper is divided into four parts. The first part deals with the description and explanation of the general principles of switching concept amplifiers. The second part is occupied with design of Class-D amplifier, a description of each block and calculations. A significant part of proposal of amplifier is based on simulations from programs Pspice and Filter Free. In the third part deign of power unit is discussed. The last part is focused on the measurement results on a prototype device.
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Smart home base station
Vašek, Jiří ; Štohl, Radek (referee) ; Fiedler, Petr (advisor)
This Bachelor thesis is focused on the design of embedded system built on the RCM3000 RabbitCore module developed by Rabbit. Periphery for communication with external devices such as detectors and sensors will be designed for this module. In the end, the design process of a motherboard with all essential procedures is proposed.
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Microprocessor control unit design
Voldán, Jiří ; Marada, Tomáš (referee) ; Věchet, Stanislav (advisor)
This thesis deals with a design and implementation of a microprocessing control unit which can be used e.g. for controlling a hydraulic loading crane. This multi-purpose control device contains commonly available computer peripheral components such as a serial line, a USB connection or Bluetooth. When specific sensors are added to this device it can be used for measurements as well as for adjustments. This device also enables to store measured data on an SD/MMC card.
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Ultrasound blood flow detector
Vožda, Michal ; Dlouhý, Jiří (referee) ; Rozman, Jiří (advisor)
This work deals with Doppler methods of measuring blood flow in blood vessels and a simple design with a continuous wave for the 4 MHz frequency and intensity of ultrasound 100 mW/cm2. The work contains a description of the functional blocks and design of their involvement. Individual blocks are simulated in PSpice. The resulting circuit is a printed circuit board and a 3D model of the plate fitted in EAGLE.
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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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Meassuring system for building constructions
Vladař, Martin ; Franek, Lešek (referee) ; Bradáč, Zdeněk (advisor)
This thesis deals with the measurement of physical quantities in building using decentralized system for data collecting. The system consists of Raspberry Pi as a master device of the system. There are three branches connected to this master device. Each branch consists of up to 32 modules for data-concentration from sensors of physical quantities. The Raspberry Pi has implemented web interface for displaying measured values and system administration.
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Wireless accelerometer modul
Lysoň, Jakub ; Odstrčilík, Jan (referee) ; Bubník, Karel (advisor)
This master’s thesis describes a wireless accelerometer module. The aim of this work was to study the properties and involvement of the accelerometer, wireless module design for data transfering from the accelerometer to the PC and the module implementation. As a wireless device is used bluetooth module that enables communication between the product and the computer. The wireless module used rechargable lithium ion battery that helps keep module alive without adapter or net cable.
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DC/DC step-up converter for notebook
Škunda, Michal ; Klíma, Bohumil (referee) ; Červinka, Dalibor (advisor)
Given bachelor’s thesis devoted to a proposal and implementation of transducer STEP-UP for supplying of notebook in car. Introduction presents dividing of switching power supplies followed by a choice and a proposal of power supply. In this work we can find the specific proposal of inductor, the proposal of electronic connexion and the proposal of PCB layout. There is a software EAGLE used for the design of PCB layout. In the last part of work there are particular courses of current and voltage that characterize power supply pictured. The work contains measured load characteristic of switching power supply loaded by notebook as well. Notebooks need to have quality power supplies that is why there was a special attention paid to the quality of supply and its electric parameters.
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