摘要
针对节水灌溉受多种因素影响难以建立精确控制模型的特点,为了实现作物的自动、实时与适量灌溉,设计了基于ZigBee和模糊控制决策的全自动灌溉系统。该系统通过ZigBee无线传感器网络采集土壤水势与环境气象信息,由农田蒸散量和土壤水势作为输入,以作物需水量为输出,采用模糊推理规则,使用分段模糊控制策略获得了作物的需水量,构成智能灌溉系统;采用ARM9微处理器,基于嵌入式Linux开发了网关节点,实现了数据的汇聚和GPRS通信方式的远程数据及命令转发。试验结果表明:该系统能快速准确地计算出作物的需水量,经济实用,有效地实现了全自动节水灌溉,特别适用于中小型灌溉区域的精细灌溉。
Water-saving irrigation is affected by a variety of factors. So it is dithcult to estabhsh a precise control model. In order to realize automatic, real-time and suitable irrigation, an automatic irrigation system based on ZigBee and fuzzy control strategy is de- signed. The system collects soil water potential and environmental meteorological information through ZigBee wireless sensor net- works, chooses farmland evapotranspiration and soil water potential as input while crop water requirement as output, uses fuzzy in- ference rules and piecewise fuzzy control strategy to obtain crop water requirement and form intelligent irrigation system, adopts ARM9 microprocessor and develops network node based on embedded Linux to realize convergence of data and remote data and com- mand forwarding of GPRS communication mode. The test results indicate that the system can calculate crop water requirement quick- ly and accurately, and realize automatic water-saving irrigation effectively. It is also economical and practical, especially suitable for fine irrigation in small and medium scale irrigation areas.
出处
《节水灌溉》
北大核心
2010年第8期52-55,共4页
Water Saving Irrigation
基金
徐州市社会发展基金资助项目(X20060096)
徐州工程学院基金资助项目(XKY2008216)
