植物智能补光系统的设计

发布时间：2019-04-22 17:06

【摘要】：我国北方大部分地处亚洲东部,属温带季风性气候,日照不足,尤其在冬、春两季农作物生长十分缓慢,因此对人工补光有很大的需求。近年来,随着大功率LED技术的不断成熟,LED在补光领域的应用研究受到国内外的广泛关注。本文针对目前我国在LED植物智能补光系统研究方面相对滞后的现状,设计了一套植物智能补光系统,旨在利用科学的补光方式来提高植物光合作用的效率,主要做了以下工作:(1)选择绿色植物,提取叶片的光合色素;采用美国海洋光学USB650光谱仪及软件SpectraSuite,测出了所选植物的吸收光谱包括峰值波长和谱线宽度等,为LED光源的选用提供了理论依据。(2)选用相应的LED光源,对其进行光谱测量,并通过改变工作电流来调整发光强度,以实现与植物光合作用吸收光谱的匹配;与传统的金卤补光灯做了比较,结果表明金卤灯的光谱比较繁复,线状波峰过多,效率较低;而LED光源没有冗余的无用光,节省能量,与植物吸收光谱更加匹配,在效率和节能方面占据优势。(3)设计了智能补光系统。系统主要由电源模块、LED驱动模块、单片机调光模块、光强检测模块和时钟控制模块组成。系统可以根据植物不同,改变光源的光谱成分并输出光强。同时,系统还可以通过检测外界自然光的强弱和设置开启/关闭时间来控制LED光源。系统具有操作简便、智能程度高、补光效率高、能耗低等优点,具有广泛的市场推广价值。
[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.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：S123;TM923.34

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