National Repository of Grey Literature 28 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Visualization of communication routes in the energetics
Pečeňa, Vít ; Šťastný, Ladislav (referee) ; Franek, Lešek (advisor)
This thesis describes the design of an application to view the positions electrometers communicating over Power Line (PLC). Applications should find the main use in the field of project Smart Grids. Furthermore, the work resolves selection of libraries required for creation of applications and the proposal itself.
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.
Wireless M-Bus communication system
Baštán, Ondřej ; Šťastný, Ladislav (referee) ; Fiedler, Petr (advisor)
The thesis deals with the design of wireless communication system using Wireless M- Bus, which works in the 169 MHz band. This system is designed to collect data from meters that are not equipped with a radio and have pulse outputs. The thesis describes the Wireless M-Bus standard and the current components of the communication system used by ModemTec. It also describes the selection and design of a suitable hardware implementing the receiver and transmitter modules and the firmware design for these modules. The thesis deals with the parameterization of the transmitter module in order to specify the parameters of the transmitted measured quantity.
Configuration and diagnostics for Smart Grid
Hrbek, Martin ; Šťastný, Ladislav (referee) ; Franek, Lešek (advisor)
This thesis designs a solution for configuration and diagnostics for the Smart Grid. It creates use case diagram for configuration and diagnostics and designs individual software modules of the system. The thesis informs a developer about suitable devices for configuration and diagnostics for the Smart Grid, especially about rugged handhelds. The thesis chooses suitable software tools for development of designed modules and contains recommendations for developers, how to use this tools. The realization of one of the designed modules verifies the correctness of the designed solutions and approaches.
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.
Control system for cantilever gates
Koždoň, Ondřej ; Šťastný, Ladislav (referee) ; Bradáč, Zdeněk (advisor)
In this bachelor's thesis is designed and in detail described a battery powered control system for wireless controlling swing gate. This system is designed as a small electronical system with necessary Inputs/Outputs (I/O) an Input for powering from solar cells and it is equipped with requisite software.
USB HID device notification
Janáček, Daniel ; Franek, Lešek (referee) ; Šťastný, Ladislav (advisor)
The objective of the thesis is familiarization with standard HID that is utilized by external USB devices, such as notificators. Moreover, another objective consists in choosing such a hardware device and in programming plugin collaborating with Miranda NG client. This device will mainly be instrumental in informing the user about incoming messages, emails and other events. Subsequently, it is defined creation of software additional item for the device, its design, description of particular functions and test concerning functionality of plugin.
Sniffer for power lines communication
Zapletal, Radek ; Šťastný, Ladislav (referee) ; Franek, Lešek (advisor)
This work deals with the design and development of universal software packet analyzer for capturing, analysis and filtering Power-line communication (PLC). The input data are provided by hardware packet analyzer over RS-232 interface. The application will find use in the area of Smart Grids and Smart Metering. This work describes both of these areas including sniffers and suggests several possible solutions with a selection of the best one and description of the development process.
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.
Implementation of a maintenance system in the manufactoring execution system COMES
Žilka, Filip ; Šťastný, Ladislav (referee) ; Pásek, Jan (advisor)
This bachelor’s thesis deals with maintenance systems. In the beginning part of the thesis there is a briefly introduction to automation with a description of systems which are part of automation pyramid. The emphasis is on MES systems from which MES system COMES, developed by COMPAS company is described. The next section is an intruduction to maintenance with a description of information technologies in maintenance and commonly used systems of maintenance, installed in industrial companies. The very last section deals with own system of maintenance which was created as an extension in module COMES Modeller.

National Repository of Grey Literature : 28 records found   1 - 10nextend  jump to record:
See also: similar author names
1 Šťastný, Libor
2 Šťastný, Lukáš
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