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Datalogger with Ethernet
Orávik, Tomáš ; Šťastný, Ladislav (referee) ; Bradáč, Zdeněk (advisor)
Thesis deals with Datalogger with Ethernet interface controlled by DISCOVERY Kit STM32F429. Datalogger is equipped with eight digital inputs and three analogue inputs. The measured data are saved on the SD card. The Ethernet interface module is designed using LAN8720A from Microchip.
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Electronic parts of small fotovoltaic power plant
Benda, Dušan ; Šťastný, Ladislav (referee) ; Bradáč, Zdeněk (advisor)
The thesis describes the design, implementation and subsequent testing of electronic circuits for usage in small photovoltaic power plants. It focused on the sub-power appliances, battery charging and monitoring of photovoltaic panels. Introduction of this work deals with selecting appropriate controllers for each subsystem and comparison of the proposed facilities with commercially available applications. A substantial part of the work describes the selected controller for each subsystem implemented and circuit design of the individual components of electronic systems in detail. For each subsystem are implemented measuring and comparing the results achieved.
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Monitor for Wireless M-Bus
Baštán, Ondřej ; Arm, Jakub (referee) ; Šťastný, Ladislav (advisor)
The thesis proposes a battery-powered devices to monitor and record communications Wireless M-BUS. Work describes how the communication protocol M-BUS, and the related wireless communication protocol Wireless M-BUS and selection of appropriate hardware for the design of the equipment in question. Work also deals with the design and creation of firmware that matches the selected hardware and purpose solutions.
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Authentication in Smart Grids
Janáč, Richard ; Šťastný, Ladislav (referee) ; Franek, Lešek (advisor)
This thesis is dealing with the possibilities of authentication of service engineers for Smart Grid network devices. The aim was to select the most appropriate type of authentication security token. Therefore, we examined the main principals of cryptography and described the algorithms used in the security token. At the end of the paper, the main three types of security tokens are compared. Further, the paper evaluates their use in equipment for the implementation of Smart Grid networks and token selection for subsequent processing demonstration applications.
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SW for access panel of data concentrator
Kováč, Jakub ; Franek, Lešek (referee) ; Šťastný, Ladislav (advisor)
The aim of this work is design the software for operating panel of data concentrator. The work shows serial communication between human-machine interface and data concentrator. There are designed the communications protocol and graphical interface for device. Consequently is shown design of algorithm of control application. The algorithm is designed in view of battery supply by using of Low-power modes.
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Inteligent Photo Printed Circuits
Kočík, Karol ; Šťastný, Ladislav (referee) ; Havlíková, Marie (advisor)
The goal of this Bachelor’s thesis is a design and implementation of an amateur PCB production device with photo printed circuits method. Different kinds of illumination and production processes of printed circuit boards are compared in an overview. In the chapter devoted to the construction of the device a brief description of the amateur device construction is made, which parts and functions it contains. Design of the device was focused on power saving and multifunctionality of the device. The last task after the construction of the device was to test the functionality and present the results.
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Modulr RGB LED display
Coufal, Miroslav ; Šťastný, Ladislav (referee) ; Bradáč, Zdeněk (advisor)
The aim of this master’s thesis was the design RGB LED display with Ethernet interface. I created a display module, controlled by a microcontroller ATmega 2560-16AU. These modules can be connected via a serial RS485 standard. Ethernet connection is made via plug-in interface that uses the programmable module Rabbit RCM 3200. I documented a proposal. I tested designed device.
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Control of lab models using PLC
Vobejda, Lukáš ; Šťastný, Ladislav (referee) ; Štohl, Radek (advisor)
This work deals with the control of lab models using PLC Rockwell Automation. As well as the use of CompactLogix, RSLogix 5000 programming environment, RSlinx Classic communication environment and software for process visualization such as FactoryTalk View Studio. The first part deals with the description of the models and their connection to a PLC environment. The second part describes and compares programming languages (ladder diagram, function block diagram and sequential function charts). The last part deals with the visualization of both models in FactoryTalk View Studio.
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Zero-Cross Detection for Time Synchronization in the Environment of PLC Communication
Šťastný, Ladislav ; Steinbauer, Miloslav (referee) ; Vozňák, Miroslav (referee) ; Fiedler, Petr (advisor)
The doctoral thesis proposes a synchronization event detection method suitable for establishing a common time base across devices using power-line communication. The technique facilitates the creation of a synchronization procedure for smart grid terminal devices, thus bringing to the low-voltage segment new functionalities already known from the higher voltage levels of the distribution network. High-precision, zero-cross line voltage detection was employed as the synchronization event. The use of the PLL (phase-locked loop) was considered and analyzed as a potentially applicable option; however, such a solution proved to be insufficiently robust against interference. Further, an FFT-based approach was designed and reviewed. The technique performs zero-cross detection, but only for the fundamental harmonic component that remains the same across the entire network. The influence of incoherent sampling on the FFT, too, was tested during the development of the method; in this context, coherent sampling was found to constitute an essential prerequisite for accurate detection as it allows us to eliminate the spectral leakage error. The impact of an AD converter on the detection accuracy was also evaluated. The proposed approach ensures the accuracy required for all common measurements and operations to improve the production, distribution, and consumption of electricity through smart grids.
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