基于单片机的可调光质LED大棚蔬菜补光系统设计  

Design of adjustable lighting system used for greenhouse vegetables based on MCU

作　　者：龙建明[1] 何国荣[1] 

机构地区：[1]杨凌职业技术学院机电工程学院,陕西杨凌712100

出　　处：《中国农机化学报》2015年第3期102-105,113,共5页Journal of Chinese Agricultural Mechanization

基　　金：陕西省教育厅2014年科学研究项目计划(14JK1845)

摘　　要：针对北方冬季大棚蔬菜光照不足的问题,提出红色和蓝色LED的R/B配比可调的补光方法,并设计了基于单片机的能适应不同蔬菜生长需要的LED自动补光系统,系统可根据大棚内的光照强度自动开启,通过调整PWM信号的占空比调节LED的R/B配比,可满足多种蔬菜的生长需要。实验结果表明,该补光系统能促进大棚蔬菜的生长。Aiming at the lack of lighting for greenhouse vegetables in winter of north China, the R/B ratio adjustable red and blue LED lighting method was proposed, and the automatic lighting system based on MCU which could adapt to the needs of different vegetables was designed. The system can be opened automatically based on the light intensity of greenhouse and regulates the LED R/B ratio by adjusting the duty ratio of PWM signal, which can meet the needs of the different vegetables growth. The lighting system can promote the growth of greenhouse vegetables.

关 键 词：LED R/B可调 PWM 补光系统 

分 类 号：TM872[电气工程—高电压与绝缘技术] TV93[水利工程—水利水电工程]