Research On Key Technologies Of Greenhouse Intelligent Control Based On Zigbee And ARM9

The Measurement and control based on embedded technology plays an extremely important role in modern industrial production,agricultural production,etc.,and whose major trend of development is network and intelligence.This paper studies a wireless-network data acquisition and control system based on embedded technology for greenhouse.The system realizes long-term data acquisition,real-time data acquisition and convenient network maintenance,and has excellent economic applicability for greatly reducing the cost of traditional network cabling.The main hardware of the system isbased on the platform of Mini2440 development board of ARM9,and the sensor module is based on Zigbee technology to meet the requirements of acquisition,feedback and real-time access.The software module mainly includes the terminal program of acquisition and control,the data receiving and processing program of the development board,and the control program of handheld terminal.The system networks a number of nodes for measurement and control according to the mode of Wireless Distribution System(WDS),and stores the acquired data in the embedded database Sqlite3.The users can access the database by WEB browser on PC or mobile phone,or measurement and control software of handheld terminal,and then can query and control in real time.It can be seen that by network tests in real greenhouse,the performance of the solution of wireless-network data acquisition and transmission for greenhouse in this paper,meets the predetermined requirements of data acquisition and transmission control,which is easy to operate,and of relatively high economic value.