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Effect of a switching arc on design of low voltage switchgear
Šimek, David ; Bartlová, Milada (referee) ; Aubrecht, Vladimír (advisor)
The first part of the master thesis is focused on theoretical analysis of the problems of diagnostics of an electric arc physical properties. In the thesis there is shown identification of spectral lines in experimentally measured electric arc spectra. The thesis deals also with energy balance of the arc. Next part of thesis is aimed to theoretical analysis of effects of electric arc on construction materials of low voltage electric apparatuses. The main part of thesis is devoted to experimental measurement of arc radial temperature changes, measurement of cathode temperature and research of electrical arc effect on selected construction materials of low voltage apparatuses.
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Control system for greenhouse
Haring, Filip ; Jirgl, Miroslav (referee) ; Bradáč, Zdeněk (advisor)
This project deals with design and implementation of control system, which is used for regulation climate conditions in special grow box. Measured values are displayed on graphic LCD, sent to application in PC or displayed on web server. The project solves software and hardware implementation of measurement system.
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Communication devices over GSM/GPRS
Prečan, David ; Růčka, Lukáš (referee) ; Herman, Ivo (advisor)
This master thesis deals with a data remote transmission by means of SMS and GPRS technology. The overview of current solutions is presented and then a remote temperature measurement and a data transmission employing a communication module GSM/GPRS TM1 through GSM network using GPRS technology is described. As a response to an impulse, the communication module sends SMS. The technical solution is described in details including HW and SW design of the data transfer and processing equipment using a ATmega 162 microprocessor. This equipment communicates with a server (PC), which displays the measured temperature. A prototype which was used for a validation of the design is also described.
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Automatic temperature logger
Spielmann, Ondřej ; Petržela, Jiří (referee) ; Götthans, Tomáš (advisor)
The subject of this bachelor’s thesis is introduction with the principles of measurement in meteorology. Using this knowledge it’s designed automatic temperature logger with wireless sensors. The acquired data is displayed on the display and further processed. Thesis also deals with the system software.
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Contactless measurement of surface temperatures when machining
Šťáva, Radek ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
Contactless measuring of surface temperature integration in the other measurement methods and their assimilation at evaluation of surface temperature of a semi-finished product bored by various tools is the target of the work. An impassable opening is being bored by these tools. The opening is close to a scanned wall. The semi-finished wall temperatures are being scanned by thermocamera and subsequently compared for every single used tool in this experiment.
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Thermal analysis of a small induction machine
Holcman, Marek ; Toman, Marek (referee) ; Mach, Martin (advisor)
This thesis deals with the thermal analysis of a small asynchronous motor with a power of 600 W. The motor losses were determined first by the program RMxprt, and then by laboratory measurement. Temperatures in engine are calculated using the thermal resistance method. For analytical calculation of motor temperatures, a simple program was created using the Matlab computation program. Using the created program and determined losses, engine temperatures were calculated, which were then verified by measurement.
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Contactless measurement of surface temperatures during milling
Kmenta, Michal ; Slaný, Martin (referee) ; Polzer, Aleš (advisor)
This Master's theses deals with the contactless measurement of surface temperatures and incorporates it among other methods of temperature measurement. For practical experiments were used infrared camera ThermaCAM SC 2000 from producer FLIR. The experiment was focused on the area of manufacturing technology – milling. Have been investigated effects of different cutting conditions on the surface temperature of the machined sample and the results are expressed mainly in the charts.
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Realisation of microclimate control system for plants
Fikar, Jan ; Šebesta, Jiří (referee) ; Urbanec, Tomáš (advisor)
The aim of my Bachelor thesis was to design an automatic system that would maintain the perfect conditions for growth and development of indoor plants. Plants kept in human households have specific requirements that are often not met. I measured, altered and evaluated several quantities (humidity, temperature, lighting). The whole system is controlled by microcontroller ATmega32.
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Very low temperature measurement
Mráz, Dominik ; Harabiš, Vratislav (referee) ; Chmelař, Milan (advisor)
This bachelor thesis is focused on low temperature measurement, respectively on temperature sensors classsification, their accuracy, temperature range and linearity. It deals especially in use of these sensors in cryogenic applications. It contains temperature sensor block diagram, including the description of each block. It also contains schematic designs with description of each design’s function, components and the reason why it’s used. Additionally the realization of the temperature sensor is described and it’s testing.
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Monitoring system design for aquaponics farm
Mikuš, Tomáš ; Bednařík, Josef (referee) ; Věchet, Stanislav (advisor)
The aim of this bachelor thesis is the design and implementation of an online monitoring system for an aquaponic farm. The system will be able to measure water temperature in tanks, air temperature and humidity, pH of water and water level in tanks. All measured data will be accessible online. The system will also be able to control a fan and water pumps.
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