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設(shè)施農(nóng)業(yè)可調(diào)光質(zhì)精確補光系統(tǒng)
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核高基重大專項(2010ZX01045—001—004);陜西省科學技術(shù)研究發(fā)展計劃項目(2010K01—21);以大學為依托的農(nóng)業(yè)科技推廣模式建設(shè)項目(XTG2010—2)


Realization of Light Quality Adjustable Precise Light Compensating Method in Greenhouse Agriculture
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    摘要:

    針對環(huán)境溫度、光質(zhì)和光強對農(nóng)作物光合作用的影響,提出結(jié)合實時環(huán)境檢測、特定波段補光與定量決策的精確補光方法,設(shè)計了基于反饋控制機制的定量決策算法。以單片機為核心控制器件,設(shè)計了可調(diào)光質(zhì)的精準補光系統(tǒng),可根據(jù)溫度及紅藍光目標光強與實時光強的差值精確計算補光量,通過PWM占空比調(diào)整LED輸出光強。實驗結(jié)果證明系統(tǒng)可實現(xiàn)按需補光;采用的LED光源較白熾燈節(jié)能54%,較熒光燈節(jié)能83%;在相同LED光源時,較常規(guī)LED補光系統(tǒng)的節(jié)能率在不同光質(zhì)閾值和氣候條件下具有一定波動,平均節(jié)能在30%以上。

    Abstract:

    A precise light compensating method integrated with real-time environmental monitoring, specific wavelength light complementing and quantitative decisionmaking was proposed. Based on feedback control mechanism, a quantitative decision-making algorithm was put forward. Using a single chip as the central control unit, the light complementing value was accurately calculated based on the environmental temperature and the difference between target and real-time values of light intensity of red and blue light. Light intensity output of LED was adjusted by PWM duty cycle to meet the demand of light complementing. Experimental results show that the system has achieved quantitative multi-waveband light complementing. And it realized the energy saving of 54% and 83% respectively to filament lamp and fluorescent. With the same LED, the system has an average energy saving ability of 30% or more compared to the existed LED light compensating system, and the energy saving rate fluctuated at different light quality thresholds and environment conditions.

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張海輝,胡瑾,楊青,代建國,趙斌,田威.設(shè)施農(nóng)業(yè)可調(diào)光質(zhì)精確補光系統(tǒng)[J].農(nóng)業(yè)機械學報,2012,43(3):181-186. Zhang Haihui, Hu Jin, Yang Qing, Dai Jianguo, Zhao Bin, Tian Wei. Realization of Light Quality Adjustable Precise Light Compensating Method in Greenhouse Agriculture[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(3):181-186.

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  • 在線發(fā)布日期: 2012-03-17
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