Beck, Sebastian (2016):
Controlling and Characterizing Different Color Sensors for Aging Analysis and Color Feedback Control.
Technische Universität Darmstadt, [Master Thesis]
Abstract
This thesis presents an approach for the characterization of color sensors. Temperature and angle dependencies are examined as well as the linearity of the color sensors. Additionally, different sensors of the same type are compared to each other. The used sensors are two RGB sensors and one true color sensor. The needed infrastructure for usage and characterizing is developed and the applied measurement setups are shown. The results of the analysis show dependencies in all examined aspects. The results are relevant for the optimal use of color sensors in multichannel LED luminaires to achieve the highest possible accuracy in a closed loop color control with sensor feedback. Furthermore, a setup for development and evaluation for future intelligent color controls in multichannel LED luminaires is introduced and evaluated. The measurement setups and the evaluation of the results can serve for future analysis in aging behavior of color sensors. This knowledge is especially relevant for the longtime constancy of multichannel LED luminaires which are controlled by a closed loop control with sensor feedback.
| Item Type: | Master Thesis | ||||
|---|---|---|---|---|---|
| Erschienen: | 2016 | ||||
| Creators: | Beck, Sebastian | ||||
| Title: | Controlling and Characterizing Different Color Sensors for Aging Analysis and Color Feedback Control | ||||
| Language: | English | ||||
| Abstract: | This thesis presents an approach for the characterization of color sensors. Temperature and angle dependencies are examined as well as the linearity of the color sensors. Additionally, different sensors of the same type are compared to each other. The used sensors are two RGB sensors and one true color sensor. The needed infrastructure for usage and characterizing is developed and the applied measurement setups are shown. The results of the analysis show dependencies in all examined aspects. The results are relevant for the optimal use of color sensors in multichannel LED luminaires to achieve the highest possible accuracy in a closed loop color control with sensor feedback. Furthermore, a setup for development and evaluation for future intelligent color controls in multichannel LED luminaires is introduced and evaluated. The measurement setups and the evaluation of the results can serve for future analysis in aging behavior of color sensors. This knowledge is especially relevant for the longtime constancy of multichannel LED luminaires which are controlled by a closed loop control with sensor feedback. |
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| Divisions: | 18 Department of Electrical Engineering and Information Technology > Light Technology (from Oct. 2021 renamed "Adaptive Lighting Systems and Visual Processing") 18 Department of Electrical Engineering and Information Technology > Institute for Electromechanical Design (dissolved 18.12.2018) 18 Department of Electrical Engineering and Information Technology |
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| Date Deposited: | 18 Apr 2017 09:40 | ||||
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| Referees: | Khanh, Prof. Dr. Tran Quoc | ||||
| Refereed / Verteidigung / mdl. Prüfung: | 27 June 2016 | ||||
| Alternative Abstract: |
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