Title

Development of a Reconfigurable LED Plant-growth Lighting System for Equivalent System Mass Reduction in an ALS

Comments

Presented at International Conference on Environmental Systems, July 2005, Rome, ITALY, Session: Plant Flight Hardware: Technologies and Research I

Abstract

When overhead electric lights are used for plant growth, inefficiency occurs due to inability to accurately target light. Light falls between young plants, but as they grow, shading occurs, requiring more light to achieve acceptable productivity. We have developed an intracanopy light-emitting diode (LED)-based system that can deliver light throughout the foliar canopy of crop stands and keep pace with crop growth. LEDs having narrow red and blue emission wavebands were selected. An array of 16 ""Lightsicles"" was constructed, each consisting of 20, 2.5 cm\u2 LED ""light engines"" containing 80 LEDs mounted along a strip. Measurements of light level and power usage have been taken and plant growth testing is underway.

Description:13 pages

Identifier

ALS-NSCORT:p36

Date of this Version

July 2005

Publisher Identifier:

SAE Document Number: 2005-01-2955

Publisher

SAE International

ALS NSCORT Project Number

Project 11 - Crop Lighting Project

Project Lead

Cary A. Mitchell

Language

English

ALS NSCORT Series

Published Materials

Administrative Contact

Dave Kotterman, dkotter@purdue.edu

Rights

Copyright 2005 SAE International. For additional information please visit the intellectual property section of the publisher's website: http://www.sae.org/about/intelproperty/ or the publisher's home page at: http://www.sae.org

Access

This article is not available through e-pubs. To purchase a copy of this article visit: http://www.sae.org/technical/papers/2005-01-2955. This article is available on CD-ROM at Purdue University's Engineering Library.

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