A Scheme Of Control System In Intelligent Greenhouse And A Research Of Data Fusion In Sensor

Greenhouse can provide a comfortable and healthy growing environment for plant growth, and the rise and development of intelligent greenhouse not only breaks the traditional limited by geography, natural environment, climate and other factors but also can monitor automatically and adjust environmental factors such as temperature, humidity, CO2 concentration, light and so on that affect plant growth. In addition, intelligent greenhouse could save labor, material resources and has great significance for agricultural production.On the basis of this basic idea, the paper designs a set of monitoring and management intelligent control system, which combines sensors, computers,automatic control and other related technologies. The system collects all kinds of basic environmental dates by sensors, then sends them to the upper machine. The upper machine analyzes and deals with the dates, then makes decision to control wind window,wet curtain and so on, which regulates greenhouse environment to suit the demand of crop growth and can achieve remote-monitoring operations connected to the Internet by B/S structure.On the other hand, the sensor is in the forefront of the intelligent control system,which perceives external changes, monitors and collects the state of the object and the corresponding physical parameters, then sends promptly to PC that makes appropriate decisions. Because sensors plays an important role in the throughout processing of the system.The accuracy of collecting and processing dates decides directly the control precision and operation efficiency of the whole control system. This paper proposes an optimal placement of sensor location in greenhouse and a choice about sensor fusion and process, in order to improve performance, accuracy and efficiency of the entire system.