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Measurement uncertainties in photometry
Motyčka, Martin ; Baxant, Petr (referee) ; Škoda, Jan (advisor)
This master's thesis is focused on problematic of measurent unceartainties in photometry. Theoretical part describes photometric measururing instruments, their uncearnities and limitations. In the second part of this thesis there is a mathematical description of calculating uncearnities in laboratory conditions. In practical part there are calculations of uncearnities for photometric instruments at light laboraty VUT Brno.
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Scene Ilumination by Photon Mapping Method
Hübner, Lukáš ; Španěl, Michal (referee) ; Kršek, Přemysl (advisor)
This thesis deals with the estimation of global illumination of a~scene. Global illumination is expressed as a~physical simulation in connection with illumination methods used in current computer graphics. In the practical part there is expressed an implementation of global illumination estimation using photon maps.
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Possibilities of Vehicle Lighting to Increase Road Transport Safety
Balharová, Gabriela ; Kresta, Vojtěch (referee) ; Tokař, Stanislav (advisor)
This master’s thesis deals with the possibilities of illumination of motor vehicles. Thesis is divided into two sections, from which the first discusses precisely the possibilities of lighting of motor vehicles at the present time. What are the modern lighting techniques, that can be found on the market and what is their impact on safety enhancement in road traffic. Second section is about the practical measurement of low and high beam afterglow. This measurement is being compared between two types of headlamps, namely halogen headlights and xenon headlights. Part of the measurement is as well measurement of illumination intensity precisely for these headlights. The output of measurement is the creation of own illumination intensity diagrams and afterglow diagrams of particular headlights, in comparison to isolux diagrams provided by the headlights manufacturer. Consequently are solved the issues about utilization of the isolux diagrams in expert praxis.
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The Lighting Equipment Used in Modern Vehicles and the Measurement of the Range of Visibility of the Main Headlights
Martínek, Michal ; Kropáč, František (referee) ; Vémola, Aleš (advisor)
This magister’s thesis is about modern lighting of vehicles, the visual range and afterglow in poor visibility. The first part of the thesis provides a detailed analysis of the current situation and problems, including a comprehensive description of the sources of light radiation, lamps, structures, and describe the systems used in modern lighting technology of vehicles. In the second part of the thesis there are the scientific methods to determine the issue of visual range and afterglow of the headlights. The second part is about the application of acquired techniques to detect an afterglow and the visual range of vehicles with modern headlights with a light source with xenon lamp, compared with a vehicle with a halogen lamp and a vehicle with an older halogen headlight.
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Simulation of LED retrofits under operational conditions
Tomeš, Martin ; Pavelka, Tomáš (referee) ; Škoda, Jan (advisor)
This Master’s Thesis on Simulation of LED retrofits under operational conditions is divided into theoretical and practical part. Theoretical part in the introductory section deals with the concepts of lighting technology and presents some electric light sources, such as classic bulbs, halogen bulbs, linear and compact fluorescent lamps. It also describes the principle of electroluminescent light sources (LED), which discusses principles of yielding a white light, the main advantages of LED etc. The reader is familiar with the issue of compensation the linear fluorescent lamps tubular LED source and with the work environment programme ReluxPro that is used for design of the lighting system. Practical part of the thesis is divided into two chapters. In the first chapter, measured linear fluorescent lamps and LED modules for the light-technical parameters, luminous intensity, radiation spectrum and settling time of light sources are evaluated and compared. The second chapter is solved by using ReluxPro, which explores the impact on the lighting and the brightness of the room layout SA 5.10 while using various light sources. In conclusion, there is an economic aspect of linear fluorescent lamps and LED modules analyzed. Results from the program ReluxPro are continuously compared with real measured values.
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Visibility measurements using lmk systém
Ciępka, Piotr ; Reza, Adam ; Unarski, Jan ; Wach, Wojciech
Based on the night measurements of unlit obstacles and background using the new LMK system, the authors calculated visibility parameters, i.e. luminance threshold difference necessary for recognise object during driving. The results of measurements were compared with other empirical investigations. A visibility studies procedure has been proposed, using the LMK system and a computer program, developed by the authors, for multi-parameter calculation of expected obstacle discernment distance. The procedure has been found particularly useful in complex road situations and atmospheric conditions.
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Map of lighting in GIS
Suchý, Petr ; Rozman, Jiří (referee) ; Čech, Petr (advisor)
This thesis deals with legislation and public lighting. Furthermore, this topic is closely related to describing the characteristics of lighting and hygiene levels in comparison with the IEC standards. The work focuses on theoretical training, follow-field measurement and analysis of data obtained. The paper discussed aspects related to the light, physiology of vision and optical comfort. Outdoor lighting and its technical characteristics. Brief description of standards and their use in planning practical measurement of public lighting. A substantial part of the work is focused on graphical analysis of values and their comparison with the standard.
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Characteristic of photovoltaic system
Pokorný, Marek ; Dolenský, Jan (referee) ; Vaněk, Jiří (advisor)
The aim of this work is informed first about photovoltaics universally, works to inform the photovoltaic panels and complete plants. The work also includes instructions on how to implement PVP in accordance with law. Another part is the rough draft of the photovoltaic power 30 kWp, which can be placed on the house, computation and calculation of investment and them profitable investments to time. Design is made in two separate forms of the Fronius Solar and Sunny Design, their outputs are compared. The practical part of this work cooperates with the company SOLARTEC Ltd. for experimental measurements of the photovoltaic system and develop a methodology for setting the properties of real solar systems in operation from the measured data then stored in a database. These data further evaluate and compare the similar operating conditions. This data will show as the course of production of electricity during the typical day in percentage terms, depending on the incident irradiance, cell temperature, angle of incident radiation, etc. We can compare what it looks like an ideal day in terms of production of photovoltaic power, with the other days. Further are in work mentioned histograms achievement panel behind classical day and behind all - time investigation.
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