基于GPS和PDA的移动智能农田信息采集系统开发

根据精细农业发展的需要，开发了移动智能农田信息采集系统。系统以掌上电脑(PDA)为平台，集成了ZigBee协调器模块、GPS OEM模块和GPRS模块。ZigBee协调器模块用于管理农田无线传感器网络，通过农田无线传感器网络采集农田信息，应用无线节点进行数据的采集；GPS模块用于采集并管理各采样点的位置信息，并通过虚拟差分站VRS接收GPS位置的差分信息以提高定位精度；GPRS模块用于在申请差分信息和与上位机通讯时建立远程无限网络连接。使用VC语言开发了嵌入式应用模块，实现了无线传感器的农田信息、GPS的

Development of a movable farm-data acquisition system with PDA and GPS

It is the basic need for carrying out precision agriculture to acquire the farmland information in real-time. A movable farm-data acquisition system was developed based on PDA and GIS technology in the paper. By using GIS technology, the system could collect and manage the information of the farmland geography location and the field parameters such as soil moisture, soil EC, soil temperature, and environment moisture. It integrated the ZigBee coordinator module, GPS-OEM module, GPRS module, and embedded GIS module as a whole mobile intelligent farming solution. ZigBee module was used for coordinating and managing the field wireless sensors network and collecting the farmland information through the network. GPS module was used for collecting and managing the geographic location information of each sampling point and collecting the boundary geographic information of the target sampling field. GPRS module was used for the remote communicating and transferring the farmland information between the system and the host PC. The movable farm-data acquisition system could be used to collect the farmland information in real-time. It could manage the several of information of the farming fields effectively. It was proved that the movable farm-data acquisition system based on the ZigBee wireless sensors network and GIS was convenient and practical for collecting and managing the farming information.