基于嵌入式组件技术的精准农业农田信息采集系统的设计与实现

Development of field information collection system based on embedded COM-GIS and pocketPC for precision agriculture

基于精确地理位置的农田信息采集是实施精准农业的基础工作。介绍了一种基于掌上电脑和DGPS/背夹式GPS设备的农田信息采集系统的开发过程。该系统在MicrosofteMbeddedVisualC++3.0集成开发环境下,采用嵌入式GIS开发组件,实现了掌上电脑环境下GPS、GIS功能的集成。系统由GPS实时通讯和数据处理模块、基于WinCE的基本GIS功能模块和农田信息采集功能模块等组成模块,能够实现与DGPS设备或背夹式GPS设备的实时通讯和定位数据的解析,实现了矢量农田地理信息的显示、操作、查询等基本GIS功能,同时,系统能够采集农田地物分布和多种影响作物生长的环境差异性信息。该文还介绍了使用Microsoft数据库访问组件对象ADOCE对PocketAccess数据库的操作方法,实现了对嵌入式农田信息采集系统中农田信息的有效管理。

It is the key step for implementing precision agriculture to collect geo-referenced variable information from field. The process of developing a kind of field information collecting system based on PocketPC and DGPS or portable GPS was expounded. By using Microsoft embedded Visual C++ 3.0 and integrating embedded GIS development kit, this system realizes the integration of GPS and GIS, which can be used to collect multi-source field dynamic information with accurate position information such as field feature distribution and other spatial variable data that affect crop production. Some main function components such as GPS communication and data phrasing module, basic embedded GIS function module and field data collection function module made up of this system. This system supports GPS serial communication and position data processing, realizes field vector data display, map operation and data query function. Moreover, this article introduces the structure of Microsoft ActiveX Data Objects for Windows CE (ADOCE), and provides the method for accessing Pocket Access database by using ADOCE. The embedded field information collection system proves that the above method is successful to manage GPS spatial position data and attribute data.