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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Κατασκευή συστήματος ανίχνευσης κίνησης και ασύρματης μεταφορά σε σταθμό βάσης

Λιβανός, Παναγιώτης 01 August 2012 (has links)
Η παρούσα διπλωματική εργασία ασχολείται με την μέτρηση της κίνησης ενός αντικειμένου στους τρεις άξονες και ασύρματης μεταφοράς των δεδομένων αυτών σε ένα σταθμό βάσης. Η μέτρηση και μεταφορά γίνεται με χρήση δύο ενσωματομένων συστήματων, τα οποία είναι βασισμένα στην οικογένεια μικροελεγκτών STM32 της εταιρίας ST Microelectronics. Tα συγκεκριμένα σύστηματα εχουν το χαρακτηριστικό STM32-103STK και παρέχονται από την εταιρία Olimex. Αρχικά περιγράφονται τα χαρακτηριστικά και οι ιδιότητες του συγκεκριμένου συστήματος και στη συνέχεια παρουσιάζεται η μεθοδολογία πάνω στην οποία στηρίχθηκε η ανάπτυξη της ενσωματομένης εφαρμογής. Συγκεκριμένα, ο προγραμματισμός του συστήματος προϋποθέτει την συνεχή μέτρηση των τιμών της κίνησης στους τρεις άξονες και στη συνέχεια την ασύρματη αποστολή τους σε ένα δεύτερο σύστημα το οποίο είναι κατάλληλα προγραμματισμένο να δέχεται τα δεδομένα και στη συνέχεια αυτά να εγγράφονται στην οθόνη για να γίνουν ορατά από το χρήστη. / This diploma thesis is about measuring an object’s movement and then the wireless transfer of the measured data to a base station. The measurement and wireless transfer is performed via two embedded systems based on the STM32 microcontroller family by ST Microelectronics. The referenced system is the STM32-103STK provided by Olimex. At the beginning of the thesis there is a description of the main features and characteristics of the STM32 system and then the methodology used to develop the embedded application is presented. In more detail, the system is programmed to measure 3-axis acceleration and send the measured data wirelessly to a second system which then presents the data on an LCD screen.
2

Řídicí systém pro závodní pneumatický monopost / Control system for racing pneumatic monopost

Kaderka, Jakub January 2019 (has links)
The thesis is focused on developing a control system for a students project of racing car Falcon with pneumatic propulsion system. The electronic design was splitted into 4 standalone modules to increase reliability and mainain- ablitity of the system. The modules are engine control unit, power supply, human machine interface and speedometer. A CAN bus with customly designed communication protocol is used to interconnect these modules. Except the pneumatic circuit control the elekctronics takes care also about measuring the race related data (pressures in the pneumatic circuit, car speed, etc.). These values are stored on SD card and optionally sent over a wireless link to PC. In the second part of the thesis design of the firmware is described. For the debugging purposes a logging system was developed. The log messages from all modules are sent over CAN and stored on the SD card for post-mortem analysis. Unit tests were written for all elementary software blocks. The Falcon vehicle with this control system participated in the competition organised by the Hungarian company Aventics during May 2019. The Falcon ended on 8th place in long distance race and on 7th place in arcade race.
3

Ultrazvukový zobrazovací systém do USB / USB Ultrasound Imaging System

Kratochvíl, Tomáš January 2017 (has links)
This master thesis deals with development and construction of ultrasound diagnostical system with USB interface. The main task is to study current usage of A mode ultrasound systems and methods of their construction. Following with own design of A mode ultrasound system with usage of assigned Olympus ultrasound transducer.
4

Využití ARM procesorů v řídicím systému vytápění

Steiger, Václav January 2017 (has links)
Steiger, V. Usage of ARM processors in heating control system. Diploma thesis. Brno: Mendel University, 2016. This thesis aims to simplify the process of controlling heating and cooling systems with standardised, widely accessible computers on purpose of integration into smart home systems. In theoretical part, heating systems available on the market are reviewed, mainly with focus on communication interfaces and protocols in use. Then the specifications of one of the most widely used protocol in heating systems communication OpenTherm, and one of the most widely used protocols in industrial computers communication RS485 Modbus are examined. Theoretical part also contains a description of integrated development environment and platform-specific development properties for STM32 ARM platform. In desing and Implementation is described RS485 Modbus OpenTherm converter firmware written in C language. Behaviour of the converter is then tested in practise.
5

Κατασκευή φωτοπαγίδας για θαλάσσια είδη με χρήση του μικροελεγκτή STM32

Λιάκης, Ιωάννης 18 May 2015 (has links)
Οι γόνοι, θαλάσσιοι ασπόνδυλοι οργανισμοί, έχουν θετική απόκριση στις φωτεινές πηγές, στη διάρκεια της νύκτας. Στην παρούσα διπλωματική εργασία σχεδιάσαμε και κατασκευάσαμε ένα σύστημα αυτοματοποιημένης λειτουργίας μιας φωτοπαγίδας για την προσέλκυση τέτοιων οργανισμών, με χρήση του μικροελεγκτή STM32F103RBT6. Στην εργασία περιλαμβάνονται 7 κεφάλαια. Πιο συγκεκριμένα στο πρώτο κεφάλαιο γίνεται αναφορά στις φωτοπαγίδες, τη λειτουργία τους, τον τρόπο κατασκευής τους καθώς και στην συμπεριφορά των ψαριών απέναντί τους. Στο δεύτερο κεφάλαιο περιγράφεται η λειτουργία των διόδων και των φωτοδιόδων. Στο τρίτο κεφάλαιο περιγράφεται η λειτουργία των LED καθώς και των LED ισχύος. Στο τέταρτο κεφάλαιο περιγράφεται η λειτουργία των τελεστικών ενισχυτών. Στο πέμπτο κεφάλαιο περιγράφεται η λειτουργία των καρτών SD και ο τρόπος προγραμματισμού τους. Στο έκτο κεφάλαιο περιγράφεται η πλακέτα που χρησιμοποιήθηκε και αναλυτικά ο επεξεργαστής STM32F103RBT6 και τα περιφερειακά του. Τέλος, δίνεται ο κώδικας του προγράμματος με κάποια σχόλια που αναφέρουν λεπτομερώς την λειτουργία του / Fish larvae, are aspondylous and they have a positive phototactic behavior, during the night time. For the current paper, we designed and built an automated system for a lighttrap device , using the microprocessor STM32F103RBT6. In this paper there are 7 chapters. The first chapter refers to lighttraps and their usage , their cnstruction and the way fish larvae respond to them. In the second chapter the operation of the lighttraps is described. In the third chapter, power LEDs and normal LEDs are described. In the fourth chapter, the operation of operational amplifiers is described. In the fifth chapter the operation of the sd cards is described, along with the proper way to program one. In the sixth chapter, the circuit used is described and the microprocessor in detail. Finaly, in the seveth chapter, there are parts of the code and the full operation of the system is descrived in detail.
6

Přijímací dekodér RTTY / Receiving RTTY decoder

Šuňal, Štefan January 2021 (has links)
This thesis deals with designing and implementing autonomous decoder for RTTY communication. Theoretical part of the thesis deals with researching the RTTY technology and FSK modulation, which it uses, focusing mainly on the methods of demodulation. Next part of the thesis compares suitability of available platforms. Practical part of the thesis describes the design and implementation of circuit board, firmware and computer application. The device is using STM32 microcontroller. Firmware was developed in C++ using Arduino. The computer application was created by using C\# and WPF. 3 methods of FSK demodulations were implmented. One is using a FFT algorithm. Other two calculate frequency based on the period of square signal.
7

Řízený zdroj po CAN / CANbus controlled power converter

Golej, Juraj January 2021 (has links)
This thesis deals with the design and realization of a DC/DC converter, which allows power conversion from 10-52 V input voltage to 10-52 V output voltage at a maximum output current of 3 A. The converter can communicate with the superior system via the CAN. In the first chapter I deal with the available integrated circuits of DC/DC converters, from which I choose one for my application. In the second chapter, I propose a block scheme of the converter, which includes the requirements from the assignment as well as my additional ones. In the third chapter I deal with the design of an electronic circuit and with the calculation of control loops. In the fourth chapter I propose firmware for the STM32 MCU, which controls the device and communicates with the superior system. In the last chapter the DC/DC converter is tested.
8

Ovládací a měřicí jednotka pro generátory plazmatu / Control and measurement unit for plasma generators

Paulovics, Petr January 2021 (has links)
The diploma thesis deals with the issue of plasma generators. Specificantlly, the work focuses on the design of HMI devices for plasma generators, including the design of the control part of the generator. The main advantage of controlling the plasma generator using an HMI device is the ability to quickly change important parameters. The HMI device allows convenient switching of the generator output frequency without the need to interfere with the wiring, which leads to higher efficiency when working with the plasma generator. Another advantage of the HMI device is the display of all important information on the LCD display. The work deals with the basic theory of plasma and its use, the division of microcontrollers and the description of their peripherals, the selection of components used and their wiring. The last part of the work is devoted to the software of the plasma generator.
9

Analyzátor proudové smyčky 0(4) - 20 mA / Current loop 0(4) - 20 mA Analyzer

Mládek, Ondřej January 2015 (has links)
The subject of master´s thesis the problematics of current loop. Within the thesis, the basic components of current loop and the possibilities of its usage are described. There has also been an analysis made of the crucial functions of analyzer which is currently being in the process of development. A focus is put on mode of source and measure. The related functions are crucial in terms of testing and simulation of current loop. Furthermore, the SPI is described and it is used to establish access to the analyzer’s display. The usage of FMEA method has been chosen for the purpose of circuit’s reliability assessment. Practical part describes development of the analyzer and its parts. FMEA method application for selected fault states is presented in final part.
10

Výukový KIT pro platformu MBED / Educational KIT for MBED platform

Maštálka, Daniel January 2016 (has links)
Thesis is about new educational kit based on Nucleo platform, which uses mbed developer compiler. Educational kit is being designed with peripherals which are warranted. Also mbed compiler is descibed and manual is written for it. In last chapter there are five slideshows made for lectures. And five exercises which are realized by students in classroom.

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