|
|
Comparison of renewables source for heating
Lapáček, Martin ; Caha, Tomáš (referee) ; Baláš, Marek (advisor)
The content of this bachelor´s thesis is the technical research, which focused on renewable sources of energy used for heating and heating water. The first part consists of general characteristics and dividing of each type renewable sources. Description of each type is supplemented with advantages and disadvantages. The second part of the work is focused on basic economic comparison of all the types, which are used on particular family house.
|
|
|
Laboratory development kit for wireless networks
Marák, Jiří ; Caha, Tomáš (referee) ; Krajsa, Ondřej (advisor)
The aim of this work is to design and implement a laboratory development kit for teaching wireless networks based on IEEE 802.15, IEEE 802.15.1, IEEE 802.11 standards and similar technologies. First are described WPAN and WLAN wireless technologies. In the next part, the work deals with the overall concept of the development kit and the subsequent selection of suitable components, and finally the design of its own development kit and the design of the printed circuit board in the program Autodesk Eagle.
|
|
|
Extraction of information from identity documents
Hudcovský, Erik ; Lattenberg, Ivo (referee) ; Caha, Tomáš (advisor)
This thesis is about the processing information from personal documents (ID card or passport) into the form that is further easily to be processed for computers and the IT industry in general. This process is implemented by the application I developed as part of my bachelor's thesis. The application contains the scanned document, the document type and the form of the required output. As the output we get the document type in the required format. The entire application is using in process an external OCR tool (OpticalCharacter Recognition), which is implemented so that it can be easily replaced by another OCR tool. I used Tesseract in my application. This OCR tool is the simpliest and most accurate of the free OCR tools at the same time. It also has strong community support and is still being developed. In this thesis, I also focused on its testing, both on the samples of text I created, and on real scans of documents. The application is also processed as an installation package, so it can be easily imported into other projects. The entire application is displayed as OpenSource on GitHube under the free license of MIT.
|
|
|
Tool for mapping computer infrastructure assets and designing SIEM correlation rules for security monitoring
Hrabálek, Matěj ; Caha, Tomáš (referee) ; Safonov, Yehor (advisor)
With the growing popularity of the SOC service, which often uses SIEM tools, new challenges arise regarding the implementation of these tools into individual infrastructures that can face cyber attacks. SIEM tools can detect cyber attacks only if they are configured correctly, i.e. they collect the right logs. This bachelor’s thesis is used for the facilitation of the process of implementing SIEM into the internal infrastructure. They discuss the appropriate categorization of log sources and correlation rules, the naming of correlation rules, and a system for mapping log sources to relevant correlation rules is proposed, which facilitates the implementation of SIEM into the infrastructure. All knowledge is then implemented into a web application, which is the practical output of this bachelor’s thesis. The web application allows the user, who is going to implement a SIEM service into their own infrastructure, to enter data about the infrastructure, especially log sources that can be generated in the infrastructure, and offers suitable correlation rules, including their naming, to the respective log sources. In addition to logs, SIEM technology and correlation rules, the theoretical part also discusses general knowledge from cyber security and describes the Security Operations Center.
|
|
|
Smart VoIP doorbell
Čecháček, Šimon ; Jedlička, Petr (referee) ; Caha, Tomáš (advisor)
This bachelor thesis focuses on the extension of an existing VoIP communicator on a single board computer Raspberry Pi, which uses the SIP protocol. The thesis introduces, among other things, an extension for one-way video transmission and conditional relay switching. The resulting communicator is able to make a call with two-way communication, execute a defined code using DTMF codes after authorization of the called user and switch a relay. The entire device is housed in a box printed on a 3D printer. The IT security of the proposed solution has been analyzed and the code and 3D model of the chassis are available on GitHub.
|
|
|
Antispam software plugin for e-mail filtering based on geolocation of the sender
Kovařík, Martin ; Komosný, Dan (referee) ; Caha, Tomáš (advisor)
This thesis deals with the creation of a module for antispam software providing email filtering using sender geolocation. The theoretical part of the thesis describes spam in general and the threats that spread through email communication, such as social engineering and malware. Then the principle of email and email headers, email filters and their methods to filter messages are described and lastly IP geolocation and machine location methods are described.The created filtering module Geolock was designed for the SpamAssassin antispam software and uses the IP2Location geolocation database. The embedding of the module into SpamAssassin is shown and the module itself and its different parts are described. The module is tested on a dataset and a real-life application is outlined. The Geolock module is published on GitHub under the MIT license (https://github.com/MartinKovarik/Geolock).
|
|
|
Web and mobile application for meteorological data collection and visualisation
Šturala, Martin ; Musil, Petr (referee) ; Caha, Tomáš (advisor)
The thesis deals with the development of a web application in .NET 5 and a mobile application for the Android operating system. The applications were created for the collection and visualization of data from the weather station, which was developed in previous years within the diploma thesis of Ing. Petr Mlčák. The web application provides a REST API for collecting data from the weather station and sending data for the mobile application, it also provides a user web interface for visualizing data from the weather station and managing it. The first part describes the quantities that the weather station measures and sends to the server. The second part describes the design of a database structure for data storage. The third part of the work is focused on the development of a web application in ASP.NET, its parts and structure. The functions and their meaning in the web interface are also described. The fourth part describes the design and development of a mobile application and the principles used for data acquisition and display. In the end, the results of the work and the method of testing applications are evaluated.
|
|
|
Application For Geolocation Databases
Caha, Tomas
Internet devices can be geographically located by their IP address. The location is derived without the need to communicate or have access to the device. This paper introduces a library and a standalone application for such location. The advantage of the library is a unified access to the major geolocation databases, as each database uses a specific access or interface. By this way, a location can be derived from various sources, compared, and best source selected. Commercial and free-to-use databases are included. The library is available via the GitHub and PyPi repositories.
|
|
|
Laboratory development kit for wireless networks
Marák, Jiří ; Caha, Tomáš (referee) ; Krajsa, Ondřej (advisor)
The aim of this work is to design and implement a laboratory development kit for teaching wireless networks based on IEEE 802.15, IEEE 802.15.1, IEEE 802.11 standards and similar technologies. First are described WPAN and WLAN wireless technologies. In the next part, the work deals with the overall concept of the development kit and the subsequent selection of suitable components, and finally the design of its own development kit and the design of the printed circuit board in the program Autodesk Eagle.
|
|
|
IoT system for gardening
Mlčák, Petr ; Kiac, Martin (referee) ; Caha, Tomáš (advisor)
The thesis deals with the design and creation of a weather station suitable for gardeners. The created device is able to measure temperature, pressure, humidity, amount of precipitation, wind speed and direction, UV index and also temperature and soil moisture at several depths. The weather station is powered by a battery with auxiliary charging from a photovoltaic panel. The thesis is divided into several parts. The theoretical part describes the individual physical principles of measurement of the considered physical quantities. Subsequently, a comparison of available sensors is made and then a final selection is made. The third part deals with the design and implementation of the hardware circuitry including the creation of the PCB. In this section, the holders of each sensor are also designed for printing on a 3D printer, which are then printed. The fourth section deals with software design issues, which is described in more detail. Finally, the whole weather station is assembled, wired and the functionality of all components is verified by sending the measured data to Thingspeak.
|
guest ::
RSS feed.