Intelligent control system for strawberry space planting in solar greenhouse

Space planting for strawberry in solar greenhouse is one reform way with a few years development in Northern China. Comparing with the traditional planting on the ground, the space planting has distinct advantage, such as the temperature environment surrounding strawberry is changed and strawberry can get more sunlight based on planting field changing from ground to space in height of indoor solar greenhouse. On the other hand, with this new planting, strawberry production management including visiting and picking can be better resolved. According to control requirements of the new planting way, this paper presents the integration intelligent control system for strawberry space planting in solar greenhouse. The hardcore is that a new system structure of intelligent control is discussed special on harmonizing control model based on IA (Intelligent Agriculture) concept as well as complex large system intelligent control theory. The new control way, reforming traditional greenhouse environment control, is presented that the greenhouse control is divided two sub-systems corresponding to environment control and plant grow control, and with strawberry growing model output constrict condition as well as driving from harmonizing control unit, two sub-systems can parallel work. Q-learning algorithm basing on multi-Agent has been utilized to operate harmonizing control, and testing results have been presented by tracking daylighting and thermostatical control for strawberry rhizosphere. The presented control system had been applied in strawberry space planting in solar greenhouse during the 7th World Strawberry Beijing 2012. The result had been proved that control effect is satisfied, strawberry average bear fruit period was advanced 40 d, and strawberry body average size was expended 22%, average production was increased 20% compared to tradition planting and control.