Irradiance and spectral distribution control system for controlled environment chambers

Krones, M. J.; Sager, J. C.; Johnson, A. T.; Knott, W. M.

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NASA NTRS · 20040090123

Irradiance and spectral distribution control system for controlled environment chambers

Krones, M. J.·Sager, J. C.·Johnson, A. T.·Knott, W. M.

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Abstract

This paper describes a closed-loop control system for controlling the irradiance and spectral quality generated by fluorescent lamps in a controlled environment chamber. The 400 to 800 nm irradiance and the ratio of the red waveband (600 to 700 nm) to the far-red waveband (700 to 800 nm) were independently controlled and varied as functions of time. A suggested application is to investigate the possibility of synergistic effects of changing irradiance levels and changing spectral distributions on photoperiodism and photomorphogenesis.

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NASA Center KSC NASA Program CELSS NASA Discipline Number 61-20 NASA Discipline Life Support Systems Computer Systems Spectrum Analysis Photoperiod Light Lighting Environment, Controlled Equipment Design Life Support Systems/instrumentation

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Krones, M. J., Sager, J. C., Johnson, A. T., Knott, W. M.. 1987-06-01. Irradiance and spectral distribution control system for controlled environment chambers. https://ntrs.nasa.gov/citations/20040090123

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