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Testing the impact of network infrastructure capacity on the performance of Internet access services
Hykš, Matěj ; Šilhavý, Pavel (referee) ; Jeřábek, Jan (advisor)
This master thesis deals with the topic of measuring the transmission capacity of computer networks. It describes the differences between service and link parameters, which are measured using TCP, UDP, ICMP and other protocols. In the last theoretical part, it briefly describes the queueing theory and explains their relevance in today’s computer networks. The result of the work is a custom measurement system that will simulate multi-user access to the electronic communications network, measure its capacity and conform to standards.
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Automatic hydroponic microfarm for plant cultivation
Takács, Peter ; Janoušek, Jiří (referee) ; Szabó, Zoltán (advisor)
This thesis deals with the implementation of hardware and software design for an existing hydroponic micro-farm. The thesis includes a literature and internet search focused on automated plant cultivation. A description of different types of soilless cultivation systems is given in the thesis. General plant requirements are addressed and these requirements are thoroughly discussed. Instrumentation using specific components is also described in the thesis. The system integrates a control unit, heating and aeration controls for the nutrient solution, adjustable lighting, and sensors for pH, EC, and adjustable water and ambient temperature. In addition, the advantages and disadvantages of two selected microprocessor units are discussed. Further, the operation of the microcontroller that controls the individual components is also described in the thesis. This thesis briefly describes the general circuitry of each component and includes circuit diagrams and the schematic of a printed circuit board. This thesis describes the program of the firmware and the functions of the web interface used to interact with the system. Additionally, it features remote control and monitoring capabilities via a web interface, with email alerts for external intervention needs. This thesis also includes the implementation of the electronics in terms of assembly and calibration.
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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.
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Control of appliances by Raspberry Pi
Panský, Michal ; Petyovský, Petr (referee) ; Macho, Tomáš (advisor)
This thesis deals with the design of hardware and software solutions for controlling household appliances using Raspberry Pi. The software part utilizes modern frameworks for creating web and mobile applications such as Svelte and SvelteNative, as well as programming languages like Typescript, Svelte, Python, and NativeScript. The thesis also describes the design and implementation of both the hardware and software parts, followed by the setup and execution of the entire program and the results of testing.
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3D Printer Remake
Čtvrtníček, Jan ; Husák, Michal (referee) ; Arm, Jakub (advisor)
Purpose of this thesis is revitalize an existing 3D printer. It briefly summarizes the possible technologies of 3D printers with a focus on FDM technology and elaborates in more depth the possibilities of X and Y axis movement. Above all, this thesis is dedicated to the design of a 3D printer model according to selected technologies so that it meets the required parameters. Subsequent implementation is based on the precise selection of mechanical and electrical components. It also deals with the implementation of the Klipper utility software on the OctoPrint interface. The entire printer is designed as an enclosable cell with automatic print unloading.
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Automatical plant growing
Stupka, Tomáš ; Dřínovský, Jiří (referee) ; Götthans, Jakub (advisor)
The aim of the thesis is to design and an automated hydroponic station, which will be intended for the cultivation of herbs and vegetables for the purpose of user. The station will be controlled by a Raspberry Pi minicomputer, to which a number of sensors will be connected, which will check pH, EC, ambient temperature and other quantities. Furthermore, an external sensor with an ATMEGA328P control processor will be designed to check the ambient lighting parameters. A web interface will be created for the station, which will allow the user to follow the development of individual measured quantities over time.
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Tutorial for autonomous driving
Strašil, Vojtěch ; Zemčík, Tomáš (referee) ; Honec, Peter (advisor)
This thesis is devoted to the design of a teaching aid for autonomous driving intended primarily for second grade primary school students and secondary school students. The aim of this work was to create a robot that is able to move autonomously along a line or in a lane that is formed by two lines, based on data obtained from a camera sensor. The thesis deals with the design of the mechanical part of the robot, the control electronics and the software. The mechanical basis of the robot is formed by an RC car that has been modified with parts printed on a 3D printer. The control electronics is a Raspberry Pi version 4 single board computer, which is complemented by an Adeept Robot HAT. Most of the necessary peripherals are then connected to this extension. The operating software was written in Python and several use cases were created as part of the work. These examples include line recognition algorithms as well as a PSD controller.
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Device for the traffic situation evaluating
Gábel, Matej ; Honec, Peter (referee) ; Janáková, Ilona (advisor)
The bachelor's thesis deals with the implementation of a device for evaluating the traffic situation, specifically by traffic signs detection. In this work, I tried different methods of traffic sign recognition, where the resulting implementation on hardware is done using convolutional neural networks. More precisely, it is the YOLOv5 architecture, which is suitable for recognizing traffic signs in real time.
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Approximation of functions determining colony activity using neural networks
Nevláčil, Jakub ; Ligocki, Adam (referee) ; Honec, Peter (advisor)
Bees as a primary pollinator are an indispensable contribution to global agriculture and food production. However, their numbers have been constantly declining in recent times, primarily due to climate change, parasites or the effect of pesticide use. Understanding their behavior and reliably determine their activity and health could significantly prevent or slow down their decline. That is why this work deals with the development of a device for the acquisition of useful data from beehives, which could be used to determine the activity and health of the bees. Furthermore, this work deals with analysis of the accumulated data using machine learning methods with an emphasis on determining the activity and health of the bees.
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Product quality control
Pitrun, Tomáš ; Janáková, Ilona (referee) ; Boštík, Ondřej (advisor)
The bachelor’s thesis deals with the industrial inspection of defects on injection molding based on computer recognition. Part of the work is a description of injection molding technology and defects that may occur with this technology. The detection application is implemented in Python on the Raspberry Pi platform. The OpenCV library is used to detect product defects. Part of the work is also the selection of suitable hardware resources, including the Raspberry Pi microcomputer, lighting camera module, lens, relay modules and supporting structure.
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