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Acceleration of Data Compression with Parallel Architectures
Juránek, Luboš ; Tříska, Vít (referee) ; Šimek, Václav (advisor)
This bachelor thesis deals with the use of parallel architectures, in particular the GPU, for acceleration of selected lossless compression algorithms, based on a statistical method, and transformations, which change the entropy of the input data to achieve better compression ratio. In this work there are in theory summarized general information about parallel architectures and programming options for them, mainly using NVIDIA CUDA and OpenCL.
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Materials for space technology
Bačová, Alena ; Tříska, Václav (referee) ; Petrásek, Miloslav (advisor)
This master´s thesis is dealing with an analysis of materials used for space technology. The thesis is divided into eight main parts. The first part defines space technology. The second part introduces the issue of designing satellites and planning the space mission. The third part describes the effects of the environment on space technology before launch, during launch and flight, in space, and during atmospheric entry. The fourth part introduces the most used standards in Europe for the space industry. The fifth part analyses materials and their application in the space industry. The sixth part provides an overview of aerospace materials tests. The seventh part analyse processes and damage of material during and after the impact of a small object. The last part is devoted to the preliminary design of the device for a more accurate analysis of the behaviour of the material during the impact of a small object.
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Design of the six seat helicopter with one turboshaft engine
Nasibullin, Bulat ; Tříska, Václav (referee) ; Petrásek, Miloslav (advisor)
The aim of this work is to develop a preliminary design of a six-seat helicopter with a turboshaft engine. The preliminary design of the helicopter consists of processing statistical data on similar helicopters, which are then, based on the specified requirements, used to estimate the basic weight parameters of the helicopter, the main geometric parameters and to determine the type and power of the propulsion unit. It consists of calculations of basic geometric parameters of the aircraft and engine selection. Part of another solution is the aerodynamic calculation of the supporting rotor, from which both the performance of the helicopter in suspension and in forward flight flow. In a special part of the project, the attention is paid to the system of balancing the reaction torque, in this case fenestrone and the solution is supplemented by some specific means installed on the tail beam, which help to balance the reaction torque and improve the directional control parameters of the helicopter.
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Room Temperature Controller
Hruškovský, Antonín ; Tříska, Vít (referee) ; Mičulka, Lukáš (advisor)
This bachelor thesis deals with a production of a room thermostat for regulation of temperature in a house or flat. The text describes several types of sensors for measuring temperature according to various physical principles. Afterwards, one of the types of sensors has been selected and used in a measuring unit. Subsequently, a hardware design of the thermostat has been described, including the creation of the PCB design on a computer, component selection and the thermostat production itself. This is followed by the description of algorithms implemented on the microcontroller MSP430 to ensure the proper functioning the thermostat. A software has been installed into the side of the computer used to communicate with the thermostat. The communication with the thermostat has been realized by means of an USB bus.
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Simple Remote Signalling of PLC Systems
Kacálek, Jan ; Šimek, Václav (referee) ; Tříska, Vít (advisor)
The aim of this thesis is the design and manufacture of hardware and software facilities used for the demonstration of communication with PLC systems. Furthermore, this paper summarizes the possibilities of communication and partially implements the MODBUS protocol via RS485 serial line. The hardware device is fabricated on the PCB and the components commonly available in electronics stores. Includes LCD display and LEDs for status display PLC system. The software application is written in Java and implements the same functionality as the hardware device.
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Fire Combustion Control System Based on Lambda Probe
Bartoš, Lukáš ; Tříska, Vít (referee) ; Šimek, Václav (advisor)
The bachelors thesis deals with a design of automatic regulation of biomass combustion in fireplaces by lambda probe. The probe measures residual amount of oxygen during the combustion and the measured value influences the efficiency of combustion process and harmful emissions which are emitted into the air. The first part of the thesis is focused onto a theoretical analysis of the proces of combustion and the effects which influence efficiency and emissions. The second part concerns the description and the use of necessary components for automatical combustion regulation. The third part deals with a pratical test which confirms or declines the possibility of regulation by measurement of residual amount of oxygen. The fourth part follows up with a design of a regulation algorithm and its implementation. The fifth part evaluates past tests and suggests a procedure for production.
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Versatile Control Unit of Solar Collectors
Tříska, Vít ; Růžička, Richard (referee) ; Šimek, Václav (advisor)
This thesis deals with design and implementation of a versatile control unit, which is primarily designed for control of solar collectors. It describes the various stages of design. First, the system of solar collectors is introduced. Its input-output parts are analyzed and the requirements are determined for the control unit. The characteristics of temperature sensors are examined, the work deals with continuous variable speed circulators. The following part is dedicated to hardware and software implementation of the objectives of the work. The boards were designed in Eagle design environment, the firmware was written in C programming language. In conclusion, the evaluation of the results of the proposed system and possible ways of its further development are discussed. The versatile control unit can be deployed in practice realistically.
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Tracking Air Pollutants by Using Wireless Sensor Network
Válek, Tomáš ; Šimek, Václav (referee) ; Tříska, Vít (advisor)
This thesis discusses design and production of a prototype of a device and implementation of a firmware for this device. Its function is to wirelessly monitor a concentration of pollutants like carbon monoxide and propane-butane in an atmosphere. Motivation is to allow parking of vehicles with engine gaseous fuels in underground collective garages for public use according to ČSN 73 6058 standard. The prototype of the device has been designed so that it could be used not only in collective garages but also in garages of family houses. The device was successfully designed, produced and programmed so that it can be deployed in real-world conditions.
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Educational Application of Compression Algorithms
Kaše, David ; Tříska, Vít (referee) ; Košař, Vlastimil (advisor)
This bachelor thesis studies the basic principles and methods of compression algorithms. After identification of these basic methods, a few algorithms are selected to represent these methods. For the selected algorithms is designed an aplication, which is then implemented for education with emphasis on visualization of algorithms steps. Application development takes into account the addition of additional algorithms.
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