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Use of Tinted Reflectors to Eliminate False Positives in Adaptive Lighting Control Systems
Technical Paper
2009-01-2380
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The High Efficiency Solid State Lighting with Integrated Adaptive Control (HELIAC) system was developed to independently detect the presence of green plant tissue and to direct light only to those locations. During testing of the HELIAC system, a major factor interfering with effective tissue detection was reflectance of sensed wavebands from the walls and ceiling causing false positives. Since it is desirable to have reflective surfaces to maintain higher light levels with less power, selective reflection systems that absorb some wavebands but reflected others were tested. A test device was fabricated to measure the reflection of red, green, and blue light from a variety of colored mirrors. It was observed that both pink and purple tinted mirrors reduced the reflection of green wavebands more than red and blue wavebands. This effect could also be obtained by using colored films attached to a silvered mirrored surface. This technique was found to improve the performance of the HELIAC system in preliminary tests.
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Citation
Morrow, R. and Bourget, C., "Use of Tinted Reflectors to Eliminate False Positives in Adaptive Lighting Control Systems," SAE Technical Paper 2009-01-2380, 2009, https://doi.org/10.4271/2009-01-2380.Also In
References
- Eckart P. 1996 Spaceflight life support and biospherics Microcosm Press Torrance, CA. 444p
- Massa G.D. Bourget C.M. Morrow R.C. Mitchell C.A. 2007 Testing of the HELIAC 2 plant detection and lighting. system Gravitational and Space Biology 21 1 29
- Massa G.D. Emmerich J.C. Morrow R.C. Bourget C.M. Mitchell C.A. 2006a Development of a reconfigurable LED plant-growth lighting system for equivalent system mass reduction in an ALS SAE Technical Paper 2006-01-2955
- Massa G.D. Emmerich J.C. Morrow R.C. Bourget C.M. Mitchell C.A. 2006b Plant growth lighting for space life support: A review. Gravit. Space Biol. 19: 19 29
- Massa G.D. Emmerich J.C. Mick M.E. Kennedy R.J. Morrow R.C. Mitchell C.A. 2005 Development and testing of an efficient LED intracanopy lighting design for minimizing equivalent system mass in an advanced life support system Gravit. Space Biol. Bull. 18-87-88