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Measurement of Operational Parameters of Light Sources
Motyčka, Martin ; Pavelka, Tomáš (referee) ; Krbal, Michal (advisor)
This semestral thesis is focused on description of operating parameters of light sources and their measurements. There are descripted light-technical, electrical and other parameters of light sources and methods of their measurements and evaluations. In tables there are ranges of fotometric quantities for most types of light sources. This thesis is also focused on functional explanation of photometric measuring instruments.
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Luxmeter
Bajgar, Jiří ; Balogh, Jaroslav (referee) ; Rozman, Jiří (advisor)
This bachelor thesis deals with the basics of lighting technology. Furthermore, this work introduces the basic units (of measurements) and hygienic limits for the working environment. It also includes methods of measuring lighting and introduces the basic detectors. The design of a simple light meter with measuring range from 20 to 1000 lx is also included in this work.
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Luxmeter
Velím, Michael ; Sekora, Jiří (referee) ; Rozman, Jiří (advisor)
This thesis deals with the matter of measuring working light with the aim to design a luxmeter with the range of 50 – 1000 lx. The purpose of this device is to define the amount of light in the room. From these measurements we can get the information if the source of the light is good enough for the type of work which is being processed in the room. The thesis has two main parts – theoretical research and practical suggest of completing the device. In the first part the author describes the matter of illumination and tries to state which light source is good for different workplaces. The second part is mainly practical and it deals with the completion of the lumeter. Also it talks about the calibration measurements of the device. The components for this luxmeter were picked up after a literary research. The author also emphasises further characteristics of each component.
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Measurement of operating room lights quality
Rovná, Tereza ; Potočňák, Tomáš (referee) ; Harabiš, Vratislav (advisor)
This thesis is focused on measuring the quality of lighting in operating rooms. Operating lights are very demanding in terms of quality requirements for each parameter, so it is important to specify exactly these parameters and check them regurarly. To measure the quality of the light source, was used a special kit from Maquet. Measurement procedure was not as accurate as it was for operating lighting need, therefore, this work includes a proposal to improve the measurement of quality lighting in operating theaters. In cooperation with University Hospital Brno Bohunice University Hospital Motol and the company Maquet measured nine operating lights, each light were compared in terms of parameters such as maximum light intensity, light distribution in the surgical field. In each category were selected several lighting, which reached the best results. The various parameters were compared with values declared by the manufacturer.
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The lighting map in GIS
Nejedlý, Lukáš ; Potočňák, Tomáš (referee) ; Rozman, Jiří (advisor)
Bachelor thesis deals with the lighting of roads and public areas. The work is divided into two parts. First part is focused on the basic terms of lighting technology, measurement methodology and appropriate hygiene standards. The paper also discussed electric light sources used in public lighting and basic information on the geographic information system ArcGIS, which was used during the processing of the measured values. The second part is focused on the measurement of illuminance in Žďár nad Sázavou and graphical analysis of the measured values in ArcView GIS. The measured values of the illumination were compared with hygenic limits standard ČSN 13 201.
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Luxmeter
Vítek, Jiří ; Bereznanin, Martin (referee) ; Rozman, Jiří (advisor)
This bachelor thesis deals with a method of measuring working illumination and with a design of basic luxmeter, which has a range of measurment 50-1000 lx. The thesis contains a detailed description of individual detectors, a design of luxmeter connection and also includes a description of individual functional blocks. For the whole apparature is performed a suggestion of the printed circuit boards.
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Near-field photometry
Kutý, Tomáš ; Baxant, Petr (referee) ; Škoda, Jan (advisor)
This thesis is focused on the theoretical and practical introduction to the verification procedures used today for obtaining luminosity curves of lamps. The introduction acquaints readers with the photometric variables. Consequently, it is theoretically described procedure for constructing luminance curves by zonal flow and further familiarization with the near-field photometry. For the practical part was chosen several lights. These lamps were measured by luxmeter first from a very close photometric distance from lights, and then from large distance. The next step was to obtain pictures of luminaries in planes C 0 to 345 ° (with a step of 15 °) of the angle gamma from 0 to 180 ° (in steps of 5 °). The measured data were processed by zonal flow and through programs LumiDISP and Matlab. The partial result of this thesis is to verify whether it is possible to use the luminance analyzer for obtaining luminosity curves, it means, if the luminosity curve obtained through luminance analyzer will comply with the curves obtained through a luxmeter. Further work should ascertain the feasibility of acquired photographs lamps from a very close photometric distance could create luminosity curve for any location and distance from the observer to measured lamps.
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Lighting in cattle farming
TRETERA, Jakub
This bachelor's thesis pursues the measuring of the lighting in stable buildings for cattle farming.The theoretical part is focused on light, lighting, lights, welfare of cattle and technology of cattle farming.In the practical part is given the characteristic of the measured objects (the scheme of buildings, the type of stabling, the lighting) and the real measuring of lighting in chosen stalls. The first measuring took place in the stall for milk cows on the family Bůžek's farm. The second measuring took place in the stall for fattening of bulls and heifers on the cooperative farm Podkleťan. The measured values were compared and evaluated according to the hold legislation. Keywords: Light,
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Hodnocení parametrů osvětlení na inseminační stanici kanců
Pecinová, Hana
The thesis aims to evaluate hygienic standard of boars breeding which is the base for good reproductive skills achievement. In relation to the quality of the semen, the lighting parameters play significant role among the microclimate conditions. In this experiment the light intensity was evaluated at weekly intervals from March 2012 to March 2013, in ISK Velké Meziříčí. 88 boar breeds were put into the experiment -- duroc, danish duroc and landrace. Light intensity was evaluated in relation to the parameters of sperm quality, which are: motility (%), semen volume (ml), sperm concentration (thousand.ml-1) and the proportion of sperm with pathological changes (%). The analysis of collected data showed statistically significant light effect on the ejaculate quality (P=0,001). When the light intensity have been growing (65,7 lx), the capacity and portion of pathological changes decreased (to 231,3 ml from 279,7 ml and 8,7 % from 9,6 %), while the concentration increased (426,8 thousand.ml-1 from 346,2 thousand.ml-1) in opposite to lower level of light intensity (52,3 lx). During summer the overall quality decreased, which can be caused by both, the intensity of light but also the thermal stress factor.
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