【摘要】：我國(guó)北方大部分地處亞洲東部,屬溫帶季風(fēng)性氣候,日照不足,尤其在冬、春兩季農(nóng)作物生長(zhǎng)十分緩慢,因此對(duì)人工補(bǔ)光有很大的需求。近年來(lái),隨著大功率LED技術(shù)的不斷成熟,LED在補(bǔ)光領(lǐng)域的應(yīng)用研究受到國(guó)內(nèi)外的廣泛關(guān)注。本文針對(duì)目前我國(guó)在LED植物智能補(bǔ)光系統(tǒng)研究方面相對(duì)滯后的現(xiàn)狀,設(shè)計(jì)了一套植物智能補(bǔ)光系統(tǒng),旨在利用科學(xué)的補(bǔ)光方式來(lái)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(guó)海洋光學(xué)USB650光譜儀及軟件SpectraSuite,測(cè)出了所選植物的吸收光譜包括峰值波長(zhǎng)和譜線寬度等,為L(zhǎng)ED光源的選用提供了理論依據(jù)。(2)選用相應(yīng)的LED光源,對(duì)其進(jìn)行光譜測(cè)量,并通過改變工作電流來(lái)調(diào)整發(fā)光強(qiáng)度,以實(shí)現(xiàn)與植物光合作用吸收光譜的匹配;與傳統(tǒng)的金鹵補(bǔ)光燈做了比較,結(jié)果表明金鹵燈的光譜比較繁復(fù),線狀波峰過多,效率較低;而LED光源沒有冗余的無(wú)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(jù)優(yōu)勢(shì)。(3)設(shè)計(jì)了智能補(bǔ)光系統(tǒng)。系統(tǒng)主要由電源模塊、LED驅(qū)動(dòng)模塊、單片機(jī)調(diào)光模塊、光強(qiáng)檢測(cè)模塊和時(shí)鐘控制模塊組成。系統(tǒng)可以根據(jù)植物不同,改變光源的光譜成分并輸出光強(qiáng)。同時(shí),系統(tǒng)還可以通過檢測(cè)外界自然光的強(qiáng)弱和設(shè)置開啟/關(guān)閉時(shí)間來(lái)控制LED光源。系統(tǒng)具有操作簡(jiǎn)便、智能程度高、補(bǔ)光效率高、能耗低等優(yōu)點(diǎn),具有廣泛的市場(chǎng)推廣價(jià)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(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：S123;TM923.34

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