Application of decision support system for monitoring field water

One of the key technologies for implementing water saving in precision agriculture is to collect and process timely temporal information from various sources that affect crop production in the field. But many people are still puzzled by the key problem that the system must integrate the distributed data acquisition and analysis functions, and transfer data rapidly via wireless network, by which various decision makers can realize dynamic communication mutually. By using global system for mobile communication(GSM) and frequency shifting keying(FSK), a technology system is designed. This system consists of AT89C51 embedded on microcomputer unit(MCU), TC35T modem, DTD462B modem and some sensors. Through the transmission of GSM and FSK, collected data were sent to the monitoring computer and decision results based on decision support system(DSS) were sent to the users' mobile phones. Nowadays the system has been applied to 70 hm² drip cotton fields on Farm 111 and has run very well in Xinjiang Region. And intellectualized management of soil moisture regime was realized. Therefore, the system provides a feasible technology framework for collecting and processing wide geographical distribution data in farmland.