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Big Data Processing from Large IoT Networks
Benkő, Krisztián ; Podivínský, Jakub (referee) ; Krčma, Martin (advisor)
The goal of this diploma thesis is to design and develop a system for collecting, processing and storing data from large IoT networks. The developed system introduces a complex solution able to process data from various IoT networks using Apache Hadoop ecosystem. The data are real-time processed and stored in a NoSQL database, but the data are also stored in the file system for a potential later processing. The system is optimized and tested using data from IQRF network. The data stored in the NoSQL database are visualized and the system periodically generates derived predictions. Users are connected to this system via an information system, which is able to automatically generate notifications when monitored values are out of range.
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The Benefits and Pitfalls of Smart Meter Data Collection
Bazal, Stanislav ; Morávek, Jan (referee) ; Šedrlová, Magdalena (advisor)
In recent years, the demand for electricity has been increasing in households because various appliances and newest technologies have been used on an everyday basis. This raises concerns about the lack of electricity production around the globe. There is also a need for people to track their daily power usage in houses. The aim of this thesis is to explain the term smart metering and its benefits for both people that might use this technology in their households, and for companies. Smart meters allow people to track and control their energy consumption and eventually it might result in cheaper costs of the resources. What is more, the smart meters help consumers to know specific information about the consumption of electricity for appliances. In a global scale, the smart metering technology is used in smart grids which are more environmentally friendly power grids with higher efficiency and greater energy production. This work also focuses on the overall distribution of smart meters both in the Czech Republic and in the world. Nowadays, there are many projects in progress that are trying to switch from traditional power plants to smart grids with the intention to increase energy production and to become eco-friendly. The companies behind these projects have already published some of their researches which bring positive information about the energy production. The majority of these projects should be in progress until 2020 and some until 2025. Therefore, the final conclusion whether the smart metering technology will replace the traditional power grids and will be implemented in households cannot be drawn yet. This thesis also contains a practical part in which I create a user interface in Grafana, which is an open-source software for time series analytics. The user interface is created for a Raspberry Pi touch display which has a sensor connected to it that allows us to measure energy consumption of electricity meters. The measured values are then presented in useful graphs and gauges in Grafana, and also on the display itself.
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System for Automated Server Administration
Pavelka, Martin ; Pánek, Richard (referee) ; Krčma, Martin (advisor)
The goal of this diploma thesis is to design the user interface and implement the information system as a web application. Using the custom implemented library the system communicates with GraphQL server which manages the client data. The thesis describes possible solutions for physical servers automatization. The application provides the application interface to manage virtual servers. Automatization is possible without human interaction. Connection to the virtualization technologies is handled by web interface APIs or custom scripts running in the virtual system terminal. There is a monitoring system built over project components. The thesis also describes the continuous integration using Gitlab tools. Running the configuration task is solved using the Unix CRON system.
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Smart Home: Digital Thermostatic Valve Controlled via WiFi
Smejkal, Jan ; Kapinus, Michal (referee) ; Materna, Zdeněk (advisor)
This bachelor thesis deals with smart home heating in households with radiators. The goal is to design a cheap digital heating head and to integrate it via WiFi and MQTT into the Home Assistant system. I have focused on keeping good design, head functions and a good user experience. Home Assistant enables showing graphs using InfluxDB and Grafana. Using a program in tool Node-RED enables it to lower heating temperature at the times of user absence and to schedule heating temperatures. The price of the complete unit is under 400 CZK. Temperature regulation was provided by a prediction controller, but it was replaced by a PID controller. The controller can regulate with the difference of maximal and minimal temperature of around 2 C. The user can control the boost mode of the head via a physical button or using the Home Assistant system. The resulting product is a good basis for a low-cost smart heating system.
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Systém pre zber a vizualizáciu údajov zo zariadení sieťovej infraštruktúry
Siroťák, Ondrej
This bachelor thesis focuses on the design and implementation of a system for collecting, storing and visualizing data from network devices at Mendel University in Brno. The introductory part deals with the issue of monitoring network devices. In the next part of the thesis, available monitoring systems are analyzed, which serve as a basis for the design of the proposed solution. At the end of the thesis, the implementation and testing of the proposed system is demonstrated.
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Mobile Application for Exporting Android Device Metrics into a Prometheus Database
Ptáček, Martin ; Burget, Radek (referee) ; Rychlý, Marek (advisor)
Tato práce se zabývá rozšířením ekosystému databáze časových řad Prometheus, aby bylo možné monitorovat také mobilní telefony s operačním systémem Android. Cílem této práce je implementovat Prometheus exportér pro Android. Výsledná implementace tohoto exportéru podporuje nejen zpřístupnění metrik pro databázi Prometheus, ale také ukládání metrik do paměti zařízení v případě nedostupnosti připojení a jejich následný dávkový export. Aplikace také obsahuje režim pro export metrik do databáze Prometheus přes NAT nebo podobnou síťovou bariéru. Aplikace exportuje přes 35 různých metrik z Android zařízení do databáze Prometheus. Čtenáři jsou předloženy výsledky testů týkající se energetické náročnosti implementace. Práce je publikována jako software s otevřeným zdrojovým kódem na platformě Github.
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Virtualized environment for testing the DDoS attacks
Král, Lukáš ; Safonov, Yehor (referee) ; Jurek, Michael (advisor)
The bachelor thesis focuses on the creation of a virtualized containerized environment for testing denial of service attacks. Theoretical part of the thesis analyses DDoS attacks, virtualization and Docker platform. In the practical part of the thesis, a web application is designed and implemented to test selected DDoS attacks. The impact of the attacks is then visualized using appropriate metrics through a monitoring system consisting of Prometheus and Grafana tools. Attackers, victim even monitoring components are generated using Docker containers.
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Predictive maintenance with wireless data transfer
Pernica, Michal ; Najman, Jan (referee) ; Dobossy, Barnabás (advisor)
This thesis deals with predictive maintenance and the use of NB-IoT network for its purpose. In the first part of the thesis, the wireless technologies for data transmission are presented, followed by a description of the different types of communication protocols, and lastly, the process of developing predictive maintenance is described. In the second part of the thesis, a server application for predictive maintenance purposes is presented, system control using a microcontroller, the NB-IoT module SIM700E is introduced along with its specifications, connection to the NB-IoT network and implementation of the MQTT protocol. Also, the server software composed of the MQTT broker, Node-Red, Influx DB and Grafana is described. The third section describes the application of predictive maintenance on two devices, namely a thermal chamber and a pneustand. The function of these systems is described, followed by the modifications applied. Afterwards, the fault conditions we want to detect are mentioned and then classifiers are trained to determine the condition. Finally, the control of the systems is redesigned so that it can be done using a microcontroller. Finally, experiments are performed while operating the device and verifying the functionality of predictive maintenance to identify the condition.
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Environmental Sensor for succulent plants
Horčička, Vít ; Hammer, Miloš (referee) ; Šoustek, Petr (advisor)
The aim of this thesis is to perform a research in the field of environmental sensors for plants, to get acquainted with the Arduino platform and to create a custom sensor design for plant care. The proposed solution is capable of monitoring ambient air temperature and humidity, soil moisture and light intensity. The measured values, along with the battery voltage, are sent via Wi-Fi to the InfluxDB database to be displayed in the Grafana environment.
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Data processing from fibre optic temperature sensors
Carboch, David ; Tomašov, Adrián (referee) ; Dejdar, Petr (advisor)
The bachelor thesis is dealing with fiber optic sensor systems, their division and properties. Furthermore, the thesis discusses the possibilities of fiber optic measurements in the nuclear power environment. Then the thesis contains possible methods of temperature measurement and their comparison. The thesis deals with the design of the sensing probe. Through the probe, the mechanical resistance of the sensing fiber and the handling of the sensing fiber have been improved. Furthermore, the thesis deals with the creation of an interactive chart of the relative temperature of a nuclear reactor in real time. In the chart, the dependence of reactor temperature change on reactor power and air temperature change can be observed. The measured results can be exported from the chart.
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