Intelligent Control Programme for Green Heating of Plastic Greenhouse with Rear Wall in North China

A solution has been proposed for green heating in winter in plastic greenhouses with rear wall in the north．This system is a typical "internet plus" facility agriculture intelligent control system．Its network architecture consists of bottom sensor network layer, middle convergence layer and top service application layer, which can realize remote monitoring．The system used solar collectors to heat the air in daytime and transmit hot air to ground through pipeline circulating pump．It used heat exchange principle to make soil warm and store energy, and slowly released heat energy at night to solve problem of heating plastic greenhouse with rear wall in the north in winter．In case of continuous overcast days, late spring cold and other conditions, electric and geothermal auxiliary devices could be started to maintain temperature in the shed．Compared with existing greenhouse intelligent system in the north, this scheme has characteristics of green environmental protection, energy saving and consumption reduction．