Design of “Internet +” -Based Intelligent Greenhouse Control System

China is a major agricultural country with vast crop planting area, but largely depending on traditional agricultural production means, which leads to low production efficiency, insufficient resource utilization, and failure to meet the requirements of energy conservation and environmental protection. In view of this problem, this paper combines agricultural production automation process with the concept of "Internet +", and designs a set of intelligent greenhouse control system based on "Internet +", thus achieving internal environment perception of the plastic greenhouse and control of equipment. By virtue of interconnection between the intelligent agricultural management cloud platform, network access equipment and intelligent nodes in the greenhouse, the system realizes real-time and precise perception of temperature, humidity, light and other environments in the greenhouse. Also, it realizes full-course recording of crop growth process, so that the entire process of agricultural products from planting to harvest is truly traceable. By deep interconnection of multi-human-machine interface devices, users can grasp sensor data and control the greenhouse equipment anytime and anywhere through portable electronic devices such as smartphones and tablet computers. The system with ZigBee wireless sensing technology has solar power supply capability. There is no need for wiring in the greenhouse during installation, so advantages of convenient installation and low maintenance cost are possible. Through the simulation platform test, the system can implement remote management and automatic control of the sensors and actuators in the plastic greenhouse. The system with stable operation, rich functions, and good scalability is expected to greatly improve intelligence of the greenhouse planting process, increase agricultural product quality as well as utilization rate of resources such as water, electricity, etc. Moreover, it will increase labor comfort, reduce the production cost of greenhouse agriculture, thus having the potential to be applied in other fields such as industry and exploration.