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Measurement of spruce needles by magnetic resonance imaging
Slivka, Ján ; Gescheidtová, Eva (oponent) ; Bartušek, Karel (vedoucí práce)
The aim of this bachelor thesis is measuring of parameters of spruce needles from their 2D visual representation. To obtain the image, the magnetic resonance was used, specifically spin echo sequence. Further work is focused on digital image processing in order to obtain the necessary image information. The algorithm of linear mask operator was applied for reducing of noise and segmentation of image by thresholding was performed. Geometric properties of examined objects were obtained by integrated functions in MATLAB.
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Photovoltaic celss for supplying low-demand electronic devices
Slivka, Ján ; Šimek, Milan (oponent) ; Slavíček, Karel (vedoucí práce)
The aim of master’s thesis was to develop a method for long-term measuring the influence of temperature on photovoltaic cells and lithium-polymer batteries and to design such measuring system. System was assembled on universal printed circuit board. It consisted of circuits for measuring temperature, illuminance and charging circuit, which charged battery with capacity 110 mAh. The PV cell BSK-SP9261 was used as source. Voltages was recorded by data acquisition device NI-USB 6009 and loged in program developed in LabVIEW 2012 enviroment. Afterwards, temperature, illuminance, voltage on PV cell and internal resistance of battery were computed.
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Measurement of spruce needles by magnetic resonance imaging
Slivka, Ján ; Gescheidtová, Eva (oponent) ; Bartušek, Karel (vedoucí práce)
The aim of this bachelor thesis is measuring of parameters of spruce needles from their 2D visual representation. To obtain the image, the magnetic resonance was used, specifically spin echo sequence. Further work is focused on digital image processing in order to obtain the necessary image information. The algorithm of linear mask operator was applied for reducing of noise and segmentation of image by thresholding was performed. Geometric properties of examined objects were obtained by integrated functions in MATLAB.
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Photovoltaic celss for supplying low-demand electronic devices
Slivka, Ján ; Šimek, Milan (oponent) ; Slavíček, Karel (vedoucí práce)
The aim of master’s thesis was to develop a method for long-term measuring the influence of temperature on photovoltaic cells and lithium-polymer batteries and to design such measuring system. System was assembled on universal printed circuit board. It consisted of circuits for measuring temperature, illuminance and charging circuit, which charged battery with capacity 110 mAh. The PV cell BSK-SP9261 was used as source. Voltages was recorded by data acquisition device NI-USB 6009 and loged in program developed in LabVIEW 2012 enviroment. Afterwards, temperature, illuminance, voltage on PV cell and internal resistance of battery were computed.
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