摘要
针对现有植物组培光照系统以光度量为控制参数,与实际用光量子度量不符的问题,本文设计了一款以光合有效量子通量密度为控制参数的新型智能LED组培光照系统。系统由红光(660nm)和蓝光(460nm)LED光源、ZigBee无线通讯、光照度传感器以及单片机系统组成。论文基于光度学原理,建立了以光度量控制光量子度量的数学模型。实验结果表明:红蓝光源的光度量与光合有效量子通量密度的比值k的实验值与理论值误差为3.86%、2.66%;给定的光合有效量子通量密度与实际组培架接收面上的误差在5%之内;在总光合有效量子通量密度65μmol/m2·s下,最大可支持12:1的R/B比。
As illuminance was used as the control parameter in the present artificial light system for plant tissue culture, which is inconsistent with the actual light quantum metric, a novel smart illumination system which uses Photosynthetic Photon Flux Density（PPFD） was designed. The system consists of red（660nm） and blue（460nm） LEDs, ZigBee wireless network, light illumination sensor and a MCU for system control. A math model for controlling PPFD by il-luminance was set up according to the principle of photometry. The deviations between measured values and theoretical values of the ratio of illuminance and PPFD is 3.86%, 2.66% respectively. The deviation between given PPFD and actual tissue holder receiving is within 5%. The limitation of red /blue coefficients is12 at 65μmol/m2·s light intensity, which could support R/B of 12：1 as biggest.
出处
《中国农机化学报》
北大核心
2014年第5期90-93,共4页
Journal of Chinese Agricultural Mechanization
基金
国家自然科学基金资助项目(60908039)
浙江省重大科技专项计划(2011C12025)
2012年杭州市重大科技创新项目(20122511A37)
