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IEEE 802.11 wireless networking for HelenOS
Kolárik, Jan ; Děcký, Martin (advisor) ; Mareš, Martin (referee)
IEEE 802.11 (a.k.a. WiFi) is a popular wireless LAN specification. This thesis documents implementation of this standard within the experimental operating system HelenOS which differs from conventional operating systems with its microkernel-based design. First, the basic concepts of WiFi technology are described. Description of external tools used during development is following. Together with that, the chosen method of integrating the wireless framework into existing system is depicted. In the next chapter we analyse the implementation details of the work. There is thoroughly explained the structure of the driver for selected WiFi device and also the functionality of resulting IEEE 802.11 library. In the end of the thesis there is an evaluation of the features of final work and comparison of enclosed implementation with existing solutions.
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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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Cryptography on constrained devices
Šťovíček, Petr ; Jedlička, Petr (referee) ; Dzurenda, Petr (advisor)
The bachelor thesis analyzes the possibilities of applying cryptographic primitives and protocols to various computationally and memory constrained devices. It then implements a secure data collection system from sensors. In its theoretical part, the work examines individual cryptographic algorithms, the RIOT operating system and available methods of wireless data transmission. It then presents the results of performance tests of various cryptographic operations. On this basis, it designs and implements a system that ensures the confidentiality, authenticity and integrity of transmitted data.
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Computer Network Design for Logistics Center
Slabý, Patrik ; Sedlák, Petr (referee) ; Ondrák, Viktor (advisor)
The bachelor thesis deals with the design of a computer network for the investor's logistics center, which operates internationally primarily in the food industry. This involves dealing with an inconsistent space and temperature environment. For this reason, an integral part of the analytical part of the thesis is a description of the current state of the computer network together with the investor's requirements. First, however, it is necessary to deal with theoretical bases that are essential for understanding the issue. The last part of the thesis contains the design of a structured cabling system based on the analytical part.
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Smart Home Security System
Dragúň, Peter ; Bidlo, Michal (referee) ; Vašíček, Zdeněk (advisor)
This thesis deals with the security of flats and houses using Bluetooth Low Energy (BLE) technology. The aim of the thesis is to develop an electronic security system for access and intrusion control exploiting the possibilities of Bluetooth Low Energy technology for improved user experience. The thesis describes security systems, BLE technology and ESP32 microcontroller. The creation of a mobile application that is used to set up the system and its management is included, as well. The thesis also describes the design, construction of a prototype and its implementation. The last part is the verification of functionality, testing and suggestions of possibilities for further improvement of the created prototype.
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Wireless Data Transfer In Modern Vehicles
Tuchyňa, Juraj
The main purpose of this project is to analyse the most common protocols used in the modern vehicles compatible with OBD II specifications and focus on processing acquired diagnostic data. The result of this project is prototype device for vehicle data acquisition. This device is able to send processed data on the external web server via the Internet network. Obtained data will be saved on data server.
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Security assessment of standards of IEEE 802.11 family
Řihánek, Tobiáš ; Pospíšil, Jan (referee) ; Pokorný, Jiří (advisor)
The aim of this work was to analyze the issue of security testing of the IEEE 802.11 protocols. The thesis includes a theoretical analysis of these protocols and a list of their vulnerabilities. Software used for testing the security was showcased. A utility was created to help with the testing. Finally, the thesis looks at the use of SDR as a way of testing security.
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Temperature and humidity monitoring devices with wirelless communication
Hrbáček, Zdeněk ; Arm, Jakub (referee) ; Bradáč, Zdeněk (advisor)
The purpose of this work is to design and implement a device for collecting temperature and humidity from bee hive. The system consists of a measuring unit that contains digital sensors and actuators.The system transmits the measured values wirelessly to the parent unit, which displays the data in a suitable format to the user. The user can monitor the hive parameters and use the actuators to adjust the temperature inside the hive. The whole system then operates autonomously according to defined rules.
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Optimization of Ethernet network in manufacturing plant
Kratochvíl, Petr ; Kubánková, Anna (referee) ; Krajsa, Ondřej (advisor)
This diploma thesis describes the work performed in the optimization of the corporate network in the company Alps Electric Czech to expand the amount of information obtained about the state of the network and thus improve the response of the IT department to potencial errors. During the optimization, a monitoring system was also deployed and its connection to the helpdesk and a tailor-made website running on the Flask microframework. With the gradual deployment, adjustments were made based on feedback from the IT department staff. Overall, the network has become more clarified, increasing the efficiency of maintenance and service.
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