【摘要】：我國北方大部分地處亞洲東部,屬溫帶季風性氣候,日照不足,尤其在冬、春兩季農作物生長十分緩慢,因此對人工補光有很大的需求。近年來,隨著大功率LED技術的不斷成熟,LED在補光領域的應用研究受到國內外的廣泛關注。本文針對目前我國在LED植物智能補光系統研究方面相對滯后的現狀,設計了一套植物智能補光系統,旨在利用科學的補光方式來提高植物光合作用的效率,主要做了以下工作:(1)選擇綠色植物,提取葉片的光合色素;采用美國海洋光學USB650光譜儀及軟件SpectraSuite,測出了所選植物的吸收光譜包括峰值波長和譜線寬度等,為LED光源的選用提供了理論依據。(2)選用相應的LED光源,對其進行光譜測量,并通過改變工作電流來調整發(fā)光強度,以實現與植物光合作用吸收光譜的匹配;與傳統的金鹵補光燈做了比較,結果表明金鹵燈的光譜比較繁復,線狀波峰過多,效率較低;而LED光源沒有冗余的無用光,節(jié)省能量,與植物吸收光譜更加匹配,在效率和節(jié)能方面占據優(yōu)勢。(3)設計了智能補光系統。系統主要由電源模塊、LED驅動模塊、單片機調光模塊、光強檢測模塊和時鐘控制模塊組成。系統可以根據植物不同,改變光源的光譜成分并輸出光強。同時,系統還可以通過檢測外界自然光的強弱和設置開啟/關閉時間來控制LED光源。系統具有操作簡便、智能程度高、補光效率高、能耗低等優(yōu)點,具有廣泛的市場推廣價值。
[Abstract]:Most of northern China is located in eastern Asia, which belongs to temperate monsoon climate with insufficient sunshine. Especially in winter and spring, crops grow very slowly, so there is a great demand for artificial light supplement. In recent years, with the development of high-power LED technology, the application and research of LED in the field of complementary light has been paid more and more attention at home and abroad. In this paper, a set of plant intelligent light supplement system is designed in order to improve the efficiency of plant photosynthesis by using the scientific way to improve the efficiency of photosynthesis, aiming at the present situation of LED plant intelligent light supplement system in our country relatively lags behind in the research of plant intelligent light supplement system. The main work is as follows: (1) selecting green plants and extracting photosynthetic pigments from leaves; The absorption spectra of selected plants, including peak wavelengths and spectral line widths, were measured by using American ocean optical USB650 spectrometer and software SpectraSuite, which provided a theoretical basis for the selection of LED light source. (2) the corresponding LED light source was selected. The photoluminescence intensity was adjusted by changing the working current in order to match the absorption spectrum of photosynthesis in plants. Compared with the traditional lamp, the results show that the spectrum of the lamp is complicated, the linear wave peaks are too many, and the efficiency is low. However, the LED light source has no redundant useless light, which saves energy, matches the absorption spectrum of plants more, and has the advantage in efficiency and energy saving. (3) the intelligent complementary light system is designed. The system mainly consists of power module, LED driver module, SCM dimming module, light intensity detection module and clock control module. The system can change the spectral composition of the light source and output light intensity depending on the plant. At the same time, the system can also control the LED light source by detecting the intensity of the external natural light and setting the on / off time. The system has the advantages of simple operation, high intelligence, high light supply efficiency and low energy consumption.
【學位授予單位】：哈爾濱工程大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：S123;TM923.34

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