|
|
Uncertainty Evaluation in Photometry and Radiometry
Motyčka, Martin ; Bálský,, Marek (referee) ; Gašparovský,, Dionýz (referee) ; Škoda, Jan (advisor)
This dissertation thesis is focused on the uncertainty analysis of the spectroradiometric and photometric measurements. The measurement uncertainty should be stated in every measurement protocols or calibration certificates. Recently the luminance cameras are widely used for the luminance measurements in the whole scene with a good resolution and measuring time. However, there is no uncertainty estimation method for these measuring devices. Therefore, this thesis analyses the luminance measurement uncertainty of the luminance analyser LDA – LumiDISP, that can be classed as a luminance camera. Since the calibration procedure is very complicated and traceable to other measuring photometric devices, there is a detailed description of the measurement uncertainties of luxmeters, luminance meters, spectroradiometric systems and its practical calculations for these systems in the light laboratory FEKT Brno University of Technology. However, the measurement uncertainties estimation of the spectroradiometric systems is especially difficult for the output quantities calculated from the spectral power distribution of the light source. In this thesis there is presented a method of uncertainty measurement and estimation of these spectroradiometric systems and luminance analyser LDA, where the luminance measurement uncertainty varies with the measured spectral power distribution of the light source, its position in the luminance image and the exposure settings.
|
|
|
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.
|
|
|
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.
|
|
|
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.
|
|
|
Luxmeter
Hrbáček, Michal ; Čížek, Martin (referee) ; Rozman, Jiří (advisor)
In this work, we introduce tha basics of lighting techniques and methods of measuring working. There is also method of measuring those working intensities and hygiene limits in this working area. Next part of this work will be systém luxmeters with a measuring range from 20 to 1000 lux. Work will include the overall wiring diagram,drawing, process kontrol block and parts list.
|
|
|
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.
|
|
|
Luxmeter
Hrbáček, Michal ; Čížek, Martin (referee) ; Rozman, Jiří (advisor)
In this work, we introduce tha basics of lighting techniques and methods of measuring working. There is also method of measuring those working intensities and hygiene limits in this working area. Next part of this work will be systém luxmeters with a measuring range from 20 to 1000 lux. Work will include the overall wiring diagram,drawing, process kontrol block and parts list.
|
|
|
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.
|
|
|
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.
|
|
|
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.
|
guest ::
