|
|
Autonomous control system for composite materials heating
Lapčák, Adam ; Levek, Vladimír (referee) ; Šteffan, Pavel (advisor)
This thesis focuses on designing an autonomous system intended for heating surfaces made of conductive composite material. The design involves smart electronics design for integration into distribution boards and the ability to control power switching elements. Emphasis is also placed on the possibility of remote system control via the internet network. For an easy deployment in any location, the autonomous system will use a mobile network. System control will be realized with a dedicated HTTP API server along with a custom user application.
|
|
|
Implementation of the LTE Cat-M Technology for Smart Metering Scenarios
Tamentsev, Viacheslav ; Le, Dinh Thao (referee) ; Mašek, Pavel (advisor)
The Diploma work examines the feasibility of implementing Long-Term Evolution for Machine-Type Communications (LTE Cat-M) communication technology in Network Simulator-3 (NS-3) to provide massive Machine-Type Communication (mMTC). The paper analyzes the capabilities of cellular communication modules in the selected NS-3 simulation tool, including the LTE/EPC Network Simulator (LENA) module. In the theoretical part, it considers Low-Power Wide Area (LPWA) global networking technologies and their applications, including key aspects of the IoT Internet and Machine-to-Machine (M2M) communications. Special attention is given to analyzing the most common technologies in LPWA networks, such as Sigfox, Low-Power Wide Area Network (LoRaWAN), Narrowband Internet of Things (NB-IoT) and Long Term Evolution for Machines (LTE Cat-M). In the practical part, simulation scenarios are created to testing and comparing the performance of legacy LTE/LTE-A networks with focus on mMTC scenarios. The result is the determination that 4G networks are not suitable for these scenarios. Therefore, for such scenarios, the LTE/EPC Network Simulato Narrowband (LENA-NB) module is being used for modifications to the LENA module to meet LTE Cat-M requirements.
|
|
|
Universal Tester for Verifying Industrial Internet of Things Communication Modules
Fabulec, Martin ; Paluřík, Pavel (referee) ; Mašek, Pavel (advisor)
The Master thesis is devoted to the verification of a platform for testing communication modules in the context of the Industrial Internet of Things (IoT). The aim is to provide an indepth analysis and comparison of modern Narrowband IoT (NB-IoT) and (LTECat-M), and determine their use in different IoT scenarios. Their commonalities are described as well as different parameters. The work includes a detailed investigation and evaluation of the available communnification modules, where the main focus is on their key parameters and differences. The thesis also focuses on the practical aspects of implementing and testing these technologies, the design of the BC660K-GL module and its subsequent functional verification. After functional verification, it was subjected to measurements focused on radio boundary conditions. The thesis opens the door to a better understanding and use of IoT technologies in industry and explores the challenges and opportunities presented by their rapid development.
|
|
|
Multipurpose IoT unit for wireless current measurement in HV networks.
Haluška, Daniel ; Kuchař, Karel (referee) ; Rusz, Martin (advisor)
The aim of this thesis is to design and implement a system consisting of a local unit and sensors that enable wireless current measurement in power lines. The introduction focuses on the exploration and detailed analysis of wireless technologies, their properties, parameters, and application possibilities for the proposed system. Furthermore, the thesis examines time synchronization methods to achieve coordinated current measurement across different phases of the power lines. The result of the thesis is a developed device model, its circuit design, software solution, and mechanical construction. A significant part of the work is dedicated to the implementation of the system's software solution and communication based on the ESP-NOW protocol.
|
|
|
Cryptographic coprocessors for IoT microcontrollers communication protection
Český, Michal ; Zeman, Václav (referee) ; Slavíček, Karel (advisor)
This bachelor thesis outlines the issue of how communication can be secured within the IoT. The microcontroller itself can also be used for this purpose, however, security will never be assured as it will be when using a hardware cryptographic co-processor. To generate the keys and certificate, the ATECC608B coprocessor is chosen which holds the necessary "secrets" used to secure the communication. As a demonstration of the cryptographic coprocessor functionality, the ESP32 microcontroller is connected to the AWS server where all the connections to the server are established using the cryptographic coprocessor.
|
|
|
Privacy-Enhancing Technologies and Privacy-Enhancing Cryptography for Wearables
Casanova-Marqués, Raúl ; Pendo,, Cristiano Gonçalves (referee) ; PhD, Lukasz Michal Chmielewski, (referee) ; Hajný, Jan (advisor)
The increasing concern surrounding privacy and the safeguarding of digital identities has emphasized the pressing necessity of establishing secure and confidential communication channels. This concern has led to the development of cryptographic mechanisms aimed at facilitating impervious information exchange. Nevertheless, traditional cryptographic approaches are proving insufficient in dynamic and resource-constrained environments, such as wearable devices. As a result, attribute-based credential schemes have emerged as a promising solution, offering fine-grained access control to digital services based on user-specific attributes. This doctoral thesis examines the efficacy and scalability of attribute-based anonymous credential schemes in ensuring the authenticity and security of users within dynamic architectures of wearable devices. It also explores enhancements to these schemes, with a primary focus on incorporating user revocation while maintaining privacy. Additionally, the thesis presents devised mechanisms to enable attribute-based authentication protocols on smart cards with limited support for elliptic curve cryptography. It addresses specific challenges associated with the usability of smart cards. Moreover, the thesis investigates the integration of anonymous authentication schemes in collaborative indoor positioning systems, aiming to provide privacy and security. Lastly, it explores the implementation of attribute-based authentication schemes in resource-constrained environments, with an emphasis on Internet of Things devices, and evaluates their feasibility within the dynamic architectures of wearable devices. The first contribution of this thesis introduces a purposefully designed protocol for anonymous authentication on smart cards. This protocol combines attribute-based credentials and user revocation while ensuring computational efficiency. To facilitate effective implementation and evaluation, the thesis employs smart cards equipped with the MULTOS operating system. The second contribution focuses on optimizing the capabilities of smart cards using Java Card technology for the implementation of attribute-based credential schemes. These smart cards are presented as a more accessible alternative for a wider consumer base. To overcome limitations in their application programming interface, the thesis devises strategies to augment the constrained support for elliptic curve cryptography and effectively implement such schemes. The third contribution presents the Privacy-Enhancing Authentication System, a robust solution compatible with smart cards, smartphones, and smartwatches. This system addresses the functional challenges associated with smart cards, including the absence of a graphical interface and limited user control over attribute disclosure. Consequently, it offers a practical and deployable solution for real-world scenarios. Finally, the thesis proposes a groundbreaking scheme to safeguard collaborative indoor positioning systems by addressing both privacy and security concerns. This scheme ensures the preservation of privacy and security by eliminating centralized architectures and employing encryption techniques for positioning information. The thesis includes comprehensive details such as protocol use cases, implementation specifics, execution benchmarks, and a comparative analysis with existing protocols.
|
|
|
Comparison of Cloud Systems for Smart Home
Sobol, Patrik ; Zbořil, František (referee) ; Janoušek, Vladimír (advisor)
This thesis deals with comparison of the biggest cloud computing platforms, Amazon and Google, with high interest in services focused on smart home. It examines connection of services between each other and it summarises options of data transport between device and cloud using protocol MQTT. By integrating of cloud services dashboard is created, which allows to control devices in household.
|
|
|
Automatic Testing of the BeeeOn System
Wolfert, Richard ; Hujňák, Ondřej (referee) ; Viktorin, Jan (advisor)
This Master's thesis is about analysis of Internet of Things project BeeeOn, design and production of unit, integration and system tests and their automation by utilization of Continuous integration system Jenkins CI. The theoretical part is devoted to software testing fundamentals and Continuous integration systems. The main point of this thesis is about specification and description of BeeeOn system, its requirements for automatic testing and its implementation. In conclusion, the results of this work and expansion possibilities are discussed.
|
|
| |
|
|
Security Monitoring of Home IoT Networks
Krajč, Patrik ; Grégr, Matěj (referee) ; Matoušek, Petr (advisor)
The main purpose of my bachelor thesis is create system for security monitoring of home IoT networks and user interface for network anomalies detection. Final application shows information about traffic in specified time intervals for specific day and hour. Traffic information are obtained from IPFIX records stored in MySQL database. Used test kits of IPFIX records were created from communication of locally connected devices that used CoAP protocol.
|
guest ::
