Microclimate Sensing and Environmental Regulation System based on Cloud-computing for Greenhouse

摘要

This paper proposes a cloud computing technique to apply to microclimate monitoring and environmental control applications in greenhouse. The use of cloud-based wireless network can reduce the wiring and cabling cost of wired network in greenhouse andeasy to configure and adjust. The proposed system consists of main control modules, multiple sub-control modules and sensing modules, which collect the environmental parameters of each node in greenhouse and perform control decision based on fuzzy inference engine and expert knowledge database. The user can utilize the graphical user interface (GUI) or webpage application interface to setup the desired environment parameters (such as temperature, humidity, carbon dioxide, and photo flux) of each zone and then send it to the sub-system via Zigbee module. The environmental control module of each sub-system will be performed to maintain the desired environment parameters setup by the user. The experiment is tested in semi-closed greenhouse which includesfour cultivation zones. One subsystem and sensors are installed in each zone and the major system is placed outside the greenhouse. The proposed system is helpful for user to observe the variation of environment parameters of each cultivation zone remotely through GUI and webpage. Meanwhile, the regulation of environment parameters is executed automatically through cloud computing. The proposed method can achieve a different manipulation of each cultivation zone for heterogeneous environments.