應用於植物栽培之多功能LED調光模組設計

Design of multifunctional LED modulation module for plant cultivation

王士瑋(Shih-Wei Wang)

指導教授 ： 甘廣宙

共同指導教授 ： 張培華 ； 蔡澈雄(Cher-Shung Tsai)

崑山科技大學/工程學院/光電工程研究所/碩士(2010年)

摘要

本篇論文是以培育植物為構想，設計應用於植物栽培之LED(Light-Emitting Diode)調光模組，以白光表面黏著式(surface mount device，SMD) 發光二極體與5Φ紅光、藍光、紅藍色交叉配置所組成之LED矩陣板作為培養植物之光源，以利光板與角鋼製作植物培育箱隔絕其他光源之影響，並且使用LED驅動電路與單晶片控制亮度與電源開啟的時間，探討不同LED的光波長與照射的強度是否會促進或抑制植物之生長。
調光模組設計為三個方向：1.提供固定電流值供給LED矩陣板，使LED達到最大亮度，2.以單晶片控制輸出固定LED照度，使每一組LED矩陣板都為同一亮度，3.設計二十四小時皆為開啟、十二小時固定亮度、十二小時自動調光等三種時間模式，控制光照時間。
在綠豆芽組經過白光、紅光、藍光等單色LED矩陣版二十四小時照射後，照射過白光LED之後的綠豆芽無論是高度、葉片數、側枝生長數都優於5Φ LED照射過後之豆芽，存活率也較其他組高。
而小麥組經過紅光、白光、紅藍混合配置等三種LED矩陣板十二小時自動調光照射後，照射過紅藍交叉配置LED矩陣之後的小麥芽，無論是高度、增生葉片數、根數都優於白光LED板與紅光LED照射過後之小麥。

關鍵字

人工光源 ； 發光二極體 ； 植物培育

並列摘要

In this thesis, A LED light-adjusting module is designed for plants-culture application according to how to make plants grow well. The LED array panels of the module consist of white light SMD LED, 5Φ red light, blue light and red-blue light which is inter-placed as to be the light sources for plant-cultivation, therefore, they can benefit plant-growth box, which are made from light panels and shaped steel, in order to prevent the illumination by other light sources and use the LED driver incorporated with the microprocessor to control light intensity and the time duration of power-on. In this study, we also investigate if various wavelengths of LED light sources and as well as the intensity of illumination could promote or prohibit plant growth.
Our design for light-adjusting module mainly contains three categories: 1. constant currents are supplied to the LED array panels to obtain the maximum LED intensity. 2. The intensity of LED illumination controlled by microprocessor such that each set of LED array panels is of the same intensity. 3. Three operation schemes are designed here to control illumination time, the first one is always switched on during twenty-four hours, the second one is switched on to certain constant during twelve hours, and switched off during the other twelve hours, and the light intensity of the third one can be adjusted automatically during twelve hours.
After twenty-four hour illumination on green bean by white, red, and blue monochrome light LED array panels, the green bean which is illuminated by white-light LED results in superiority to its counterpart in height of stem, number of leaves, and number of branch propagation. Besides, the survival rate here is higher than the others as well. On the other hand, in the study of wheat cultivation, after automatically adjusting with red, white and red-blue mixed LED array panels, the wheat, which was illuminated by red-blue mixed LED array, is superior to those were illuminated by white or red LED in height of stem, number of leaves and number of roots.

並列關鍵字

Artificial Lighting ； Light Emitting Diode ； Plant Cultivation

參考文獻

[5] 陳麗新，“行動溫室環控系統之研究”，碩士論文，國立中興大學生物產業機電所，2004。

[6] C. A. Leite, R. M. Ito, G. T. S. Lee, R. Ganelevin, M. Â.Fagnani, “Light spectrum management using colored nets aiming to controlling the growth and the blooming of Phalaenopsis sp.”, ISHS ACTA Horticulturae, Vol. 770, 2008, pp.177-184.

[8] G. G. Lee, B. Palsson, “High-Density Algal Photobioreactors Using Light-Emitting Diodes.” , BIOTECHNOLOGY AND BIOENGINEERING. VOL. 44, NO. 10, NOVEMBER 20, 1994, pp.1161-1167.

[9] B. C. Tripathy, C. S. Brown, “Root-Shoot lnteraction in the Greening of Wheat Seedlings Grown under Red Light”, Plant Physiol. Vol. 107, 1995, pp.407-411.

[11] D. J. Tennessen, R. J. Bula, T. D. Sharkey, “Efficiency of photosynthesis in continuous and pulsed light emitting diode irradiation”, Photosynthesis Research, Vol.44, 1995, pp.261-269.