摘要
针对大尺度灌区进行准确灌溉预报过程中存在的土壤水分空间变异性和预报实时性的问题,设计了通过对灌区合理划分基本单元及优化布置土墒采集节点,应用Zigbee无线传感网络分区域采集土壤墒情,由水量平衡方程对各单元实测数据进行预报,并逐层汇总、分析得到灌区总预报。通过GPRS无线网络实现远程PC机与区域Zigbee网络的数据连接,不仅实时监控灌区土壤墒情而且可执行远程灌溉控制,提高了灌区灌溉管理效率,对于灌区灌溉管理的数字化、实时性发展具有重要意义。
Soil water variability and real-time forecast are the major problems involved in precise irrigation forecast for big scale irrigation district. In this paper, the reasonable basic unit division method is designed and the layout of water soil sensor sites is optimized. Then the Zigbee wireless net technology is used to collect soil water content in each unit and to forecast the water demand with water balance equation. All the forecast data in basic layer or basic units are analyzed to predict that in the top layer and finally to obtain that of the global irrigation district. The Zigbee net data transmitting to remote PC through GPRS can not only monitor the real-time soil water content, but also conduct the remote irrigation control. This technology is significant in accelerating the digital management of irrigation and increasing irrigation management efficiency.
出处
《节水灌溉》
北大核心
2012年第12期61-65,共5页
Water Saving Irrigation
