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Wireless data logger for environmental monitoring - server-side
Bártek, Jiří ; Kolářová, Jana (referee) ; Sekora, Jiří (advisor)
This work describes the design and implementation of the server-side component, which is part of a comprehensive task for measuring temperature in medical storage spaces and sending the measured temperature at specified time intervals. The created device will receive the measured data and subsequently send it to an e-mail address. The introductory part deals with the legislation related to the storage of medicines and further provides the reader with theoretical information about the used devices and protocols. The next section of the work introduces the implementation of the device and software solution. The outcome of the work is a device capable of communicating with another microcontroller and sending the received data to a selected e-mail address for subsequent archiving.
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Design and developement of autonomous system for monitoring critical paramaters in food industry
Chovan, Hynek ; Formánek, Martin (referee) ; Krejčí, Petr (advisor)
his work focuses on automating the monitoring of temperature and other operational parameters in gastronomic establishments. The designed device allows real-time monitoring of temperature, humidity, and other parameters with remote access capability. It utilizes the ESP32 microcontroller, SHT40 and HX711 sensors, and TP4056 charging circuit with DW01A protection circuit. Data is transmitted to a Gateway device, which displays it through a web interface. Testing demonstrated sufficient communication range and long battery life. The device meets requirements for compactness, reliability, and efficiency. This project represents progress in IoT applications for ensuring food safety and efficiency in handling food in gastronomic establishments.
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Application for communication simulation and visualisation in 3GPP 4G/5G mobile networks.
Fašanga, Jozef ; Štůsek, Martin (referee) ; Dvořák, Radim (advisor)
Mobile networks constitute a key pillar of contemporary life, enabling connectivity regardless of location. This work focuses on the development and simulation of 4G/5G mobile networks according to the 3GPP standard. 4G/5G networks have evolved from simple voice services to sophisticated systems for data transmission. Simulation tools simplify the understanding of their complexity. The paper provides insight into the history and future of these networks, describing application design processes from both the designer’s and developer’s perspectives. The theoretical section analyzes the architecture and new technologies of 4G/5G networks. The final part emphasizes the field of graphic design for applications with a focus on aesthetics and user-friendliness. The work further describes the design of the application itself, along with an explanation of the correct choice of programming language and tools for implementation.
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Simultaneous transmission of photonic services in fibre optics
Látal, Michal ; Horváth, Tomáš (referee) ; Münster, Petr (advisor)
Diploma thesis focuses on simultaneous transmission of selected photonic services by one single-mode optical fiber. The thesis deals with the problem of common transmission of multiple photonic services by one optical fiber using the wavelength division multiplex technology. Furthermore, the origin and influence of nonlinear phenomena accompanying the simultaneous transmission of photonic services are described. Except common data transmission with a bitrate of 10 Gbit/s, a common high-speed data signal transmission with a bitrate of 200 Gbit/s, accurate time transmission and high-power sensor signal are considered. During the aimultaneous transmission of selected photonic services, the measurement of the transmission parameters was performed for various variants of the simultaneous transmission arrangement. In particular, the influence of nonlinear phenomena and possible mutual interference of individual transmission channels at 50 and 100 GHz between signals was analyzed.
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One-way serial laser communication over longer distances
Valent, Adam ; Šteffan, Pavel (referee) ; Háze, Jiří (advisor)
The subject of this thesis is the construction of one-way communication device. This device consists of the transmitter and the receiver, both of which are connected to its respective computer via USB interface. This device allows sending UTF-8 characters or files from one computer to another. Both computers are running a graphical user interface program. The core of a transmitter is a digital signal modulating laser diode. The receiver is made of photovoltaic panel with a resonance circuit and an amplifier. Communication between the electronics and the computer is driven by microcontrollers. Received messages are verified with one of multiple error detection algorithms, which can be selected by user in the utility program.
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Implementation of smart water measurement technology into small municipal waterworks environment
Klučka, Tomáš ; Zubíček,, Vojtěch (referee) ; Ručka, Jan (advisor)
The diploma thesis describes the actual situation of smart water metering, an overview of water meters suitable for remote data reading and individual components for application of remote data transmission including transmission itself. The thesis also contains the characteristics of available wireless data communication technologies and detailed solutions according to two companies specializing in remote transmission of water meter data. Subsequently, the pilot projects of large water company are presented, including practical findings. The practical part deals with the implementation of smart water metering in three specific municipalities, including a description of the area of interest, water supply system specification and possible limitations, the recommended technology, the requirements for putting in into operation and the pricing of technology and services according to two specialized companies. Finally, the possibilities of other using of smart water meter technology are discussed.
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Communication devices over GSM/GPRS
Prečan, David ; Růčka, Lukáš (referee) ; Herman, Ivo (advisor)
This master thesis deals with a data remote transmission by means of SMS and GPRS technology. The overview of current solutions is presented and then a remote temperature measurement and a data transmission employing a communication module GSM/GPRS TM1 through GSM network using GPRS technology is described. As a response to an impulse, the communication module sends SMS. The technical solution is described in details including HW and SW design of the data transfer and processing equipment using a ATmega 162 microprocessor. This equipment communicates with a server (PC), which displays the measured temperature. A prototype which was used for a validation of the design is also described.
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Influence of physical parameters and age of power lines on PCL/BPL performance and reliability
Janás, Jan ; Mlýnek, Petr (referee) ; Benešl, Lukáš (advisor)
With the increasing demands on data transmission, other ways are being sought than standard data transmission via conventional data cables. One of these ways is communication over power lines - PLC or BPL technology. This method of communication is widely used in households, energy, industry and other fields where it is used for data collection, communication, or control of various devices. Before considering the use of BPL technology, it is first necessary to evaluate the considered power line to see if it is suitable and technically competent for this purpose.
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Data transmition security with BCH codes
Frolka, Jakub ; Tejkal, Vladimír (referee) ; Němec, Karel (advisor)
The bachelor thesis Data transmission security with BCH codes deals with class of random error correction cyclic codes which are able to protect data in binary form. BCH codes operate over algebraic structures called Galois fields. Encoding of these codes is same as encoding cyclic codes and can be used cyclic shift register, but decoding is more complex and can be done with many algorithms, in this thesis are mention three: Peterson algorithm, Matrix method and Berlekamp-Massey algorithm. In this thesis are described characteristics BCH codes, their usage in communication devices and their posibility implementation. An example BCH code which is able to correct four independent errors is created. This example is used for presentation of encoding and decoding methods. In the end is described implementation of data protection codec for FGPA devices.
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Data transmission over distribution power networks
Vašíček, Filip ; Mišurec, Jiří (referee) ; Zeman, Václav (advisor)
This thesis brings together information about the data transmission over distribution power networks with a view to the broadband systems. The division of PLC systems is mentioned and the principle and characteristics of PLC technology are described. I was also interested in topology and a description of elements of PLC network. There are presented the two most frequently used systems: HomePlug and DS2. Next section contains an analysis of network architecture, especially the physical layer. The protection of data against errors and the OFDM method are described. There are also analyzed other layers of the network reference model, the mechanism of quality of services and the data encryption using AES. I was also focused on the issues of standardization of PLC, the electromagnetic compatibility and a description of the international project OPERA. In the practical part is processed the concept of the laboratory PLC network with elements of the system Defidev/DS2. Functionality of the network has been tested by measuring of the bit rate on the physical and application layer.
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