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An investigation of lubrication of knee joint replacement
Sýkora, Tomáš ; Horák, Zdeněk (referee) ; Nečas, David (advisor)
This diploma thesis deals with an experimental analysis of knee joint replacement lubrication. The experiments were realized at a knee joint simulator which can apply conditions according to certain standard and survey the phenomena by using fluorescence microscopy. The aim of thesis is to clarify the influence of particular components of synovial fluid on the lubrication process. The intensity of fluorescence expresses dimensionless parameter of a lubrication film thickness. There was a fundamental study with mineral oils before the experiments with the synovial fluid. The study allows to have a look at contact transformation during walk. Results are shown in graphs as dependency of intensity on time, including pictures showing phenomena in the contact zone. Experiment results show that protein -globulin creates a layer on the surface. There is albumin on the layer and it makes the lubricating film thicker. The protein interaction is supported by hyaluronic acid and fosfolipids which stabilizes the created structure. According to lubrication is behaviour of film related to a complex structure of synovial fluid. Thesis gives more information about behaviour of synovial fluid and can be used for future development of knee replacements.
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Realization of a Model with a Smart Home Components
Fuxa, Dominik ; Sýkora, Tomáš (referee) ; Jirgl, Miroslav (advisor)
At the beginning, Bachelor thesis introduces possible smart home solutions that have already been designed and tested, whether from different companies or freely available open-source solutions. Subsequently, the work is devoted to selecting components for the smart home, programming its own software for managing the smart home, as well as designing a complete functional model.
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Electronic business card/price tag with wireless communication
Sirůček, Václav ; Sýkora, Tomáš (referee) ; Bradáč, Zdeněk (advisor)
The Bachelor thesis deals with the design of an electronic business card, a portable imaging device that will display data about the wearer (name, surname, phone number and email). Claims are for long-term battery life and remote display of data on an electronic ink display. At work there is a solution for powering the product with a display and its wireless communication with the computer or phone. It also deals with battery status displays, display updates, circuit schematics, electronic business card case design and final realization.
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Test benches for microcontroller kits
Hatala, Branislav ; Sýkora, Tomáš (referee) ; Bradáč, Zdeněk (advisor)
Táto práca sa zaoberá návrhom a zostrojením testovacej stolice pre mikrokontrolérové kity. Hlavným účelom testovacej stolice je test funkčnosti modulov výukového kitu. Samotná testovacia stolica má modulárny hardvér a umožnuje použitie akéhokoľvek dostačujúceho embedded systému ako svojho systémového jadra. Hardware systému je rozšíritelný na úlohu testovania firmwaru výukových kitov.
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LED display for conveyor for testbed I4.0
Rázek, Stanislav ; Kaczmarczyk, Václav (referee) ; Sýkora, Tomáš (advisor)
The bachelor’s thesis deals with the design of hardware and the creation of software for a matrix LED display, which will then be used in the bartender project. The LED display is controlled by a microcontroller. It is attached between the aluminum profiles forming its frame. Its function is to display information and create a graphical user interface for the dispensing conveyor belt
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Stress strain analysis of membrane coupling
Sýkora, Tomáš ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This master’s thesis deals with the strain stress analysis of a membrane coupling with different membrane shapes and under different operating conditions. Thanks to their flexible membrane, these couplings are able to transmit torque even in the moment of misalignment of the connected shafts. However, too much misalignment is one of their most common causes of failure. For this reason, it is necessary to define the critical areas of the coupling during the design and to reduce these areas with the right optimization. For this purpose, a geometric and subsequently a numerical model of the membrane coupling for simulations using FEM software Ansys Workbench is created. At the beginning, the initial shape of the membrane is determined and according to the results of individual simulations, the shape is gradually optimized. At the end of the thesis, based on the distribution of equivalent stress in the membrane, the results of individual optimizations are compared and evaluated.
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Mobile Robot Localization in Indoor Scenarios
Sýkora, Tomáš ; Brejcha, Jan (referee) ; Beran, Vítězslav (advisor)
The goal of this project was to create a software for an autonomous mobile robot capable of navigation in indoor scenarios and of detection and recognition of the objects on its way. An important condition that the final software had to meet was to find the cheapest solution possible. I achieved the given goal and its conditions using an open source software framework Robotic Operating System (ROS) and its tools. The final system is a set of ROS modules communicating with each other, using a single sensor as an input data stream and a small motor which is able to send information about its velocity and rotations to the control part of the system. This mobile robot can, without any significant problems, navigate through a mapped area while trying to find trained objects. Such a robot could be easily used (after adding specific mechanical parts) to help retired or disabled people, to cooperate with industry workers or in many other fields.
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Smart home model
Kaniok, Vojtěch ; Jirgl, Miroslav (referee) ; Sýkora, Tomáš (advisor)
This bachelor thesis deals with exploration of possibilities in regard to automatic integration of devices into Home Assistant and creating a demonstration model of home automation. The theoretical part of this work presents the MQTT protocol, presentation containing description of functionality and comparison with the HTTP protocol. Furthermore, explanation of specific concepts for MQTT such as QoS, types of messages, possibilities of filtration etc.Introduction of the ZigBee communication standard. Following section introduces Open source platform Home assistant, description of architecture, various options of integrating devices, characterization and disadvantages of particular types of installations. Subsequently, I will describe alternatives of MQTT integration in Home Assistant and compare advantages and disadvantages. In the last section of this paper the reader is familiarized with final results, description of MQTT discovery protocol, test of ESP HOME platform and verification of functionality of automatic integration
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Service unit for BUSE devices with remote management
Musil, Roman ; Sýkora, Tomáš (referee) ; Bradáč, Zdeněk (advisor)
The aim of this thesis is to create compact device which allows remote management of low-level devices of public transport information system. The thesis first deals introduction to the issues of the information system as a whole and its requisites. After that the thesis analysis the hardware of the existing board computer which the design was based. The next points od this thesis are focused to design and create software for upgrade firmware of information panels created by BUSE company and also for design and create system for remote managment. The conclusion summarizes obtained information and the results achieved.
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