Design of regulation system of light environment in greenhouse based on wireless sensor network

Recently, light environment regulation has become a significant research focus in the precision agriculture development of our country. First, studies on the biological mechanisms of photosynthesis have provided a theoretical basis for accurate and quantitative regulating of the light of crops. Secondly, with the rapid development of semiconductor and opto-electronics technology, specific-band, single-wavelength and narrow-band light emitting diodes have been produced. Based on the above analysis, using a wireless sensor network, an intelligent light environment regulation system was designed, which was described from the overall architecture, hardware, software features, and experimental verification. Field test results showed less than 3% relative tolerance in outputting light value. Experiments proved the system could realize real-time, on-demand, quantitative regulated under the condition of temperature constraint and dynamically adjusted energy output under the condition of meeting the demand of crops.