| 设施农业可调光质精确补光系统 |
| |
| 引用本文： | 张海辉,胡瑾,杨青,代建国,赵斌,田威.设施农业可调光质精确补光系统[J].农业机械学报,2012,43(3):181-186. |
| |
| 作者姓名： | 张海辉 胡瑾 杨青 代建国 赵斌 田威 |
| |
| 作者单位： | 西北农林科技大学机械与电子工程学院,陕西杨凌,712100 |
| |
| 基金项目： | 核高基重大专项（2010ZX01045—001—004）;陕西省科学技术研究发展计划项目（2010K01—21）;以大学为依托的农业科技推广模式建设项目（XTG2010—2） |
| |
| 摘 要： | 针对环境温度、光质和光强对农作物光合作用的影响,提出结合实时环境检测、特定波段补光与定量决策的精确补光方法,设计了基于反馈控制机制的定量决策算法。以单片机为核心控制器件,设计了可调光质的精准补光系统,可根据温度及红蓝光目标光强与实时光强的差值精确计算补光量,通过PWM占空比调整LED输出光强。实验结果证明系统可实现按需补光;采用的LED光源较白炽灯节能54%,较荧光灯节能83%;在相同LED光源时,较常规LED补光系统的节能率在不同光质阈值和气候条件下具有一定波动,平均节能在30%以上。
|
| 关 键 词： | 设施农业 发光二极管 精确补光 可调光质 |
Realization of Light Quality Adjustable Precise Light Compensating Method in Greenhouse Agriculture |
| |
| Zhang Haihui,Hu Jin,Yang Qing,Dai Jianguo,Zhao Bin and Tian Wei.Realization of Light Quality Adjustable Precise Light Compensating Method in Greenhouse Agriculture[J].Transactions of the Chinese Society of Agricultural Machinery,2012,43(3):181-186. |
| |
| Authors: | Zhang Haihui Hu Jin Yang Qing Dai Jianguo Zhao Bin and Tian Wei |
| |
| Institution: | Northwest A & F University;Northwest A & F University;Northwest A & F University;Northwest A & F University;Northwest A & F University;Northwest A & F University |
| |
| 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. |
| |
| Keywords: | Greenhouse agriculture LED Precise light compensating Light quality adjustable |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《农业机械学报》浏览原始摘要信息 |
| 点击此处可从《农业机械学报》下载免费的PDF全文 |
|
