基于无线传感网络的伊犁地区农业智能节水灌溉控制系统开发

Development of Intelligent Water-saving Irrigation Control System for Agriculture in Yili Region Based on Wireless Sensor Network

为解决伊犁地区水资源分布不均的矛盾,提高节水灌溉效率,推行智能化农田建设,设计出一套基于无线传感网络的伊犁地区农业智能节水灌溉控制系统。系统以STM单片机为核心,以LoRa技术作为无线传输方式,结合YL-69型电容式土壤湿度传感器、YF-S201水流量传感器、2 W常闭型直动式水气通用电磁阀多传感器组合的方式组建无线传感网络。测试表明,系统的设置高度高于作物高度时可获取最远通信距离,系统的节点感知精度较高、绝对误差在2%~4%之间,平均丢包率为2%,系统信息传输较为稳定,并具有较低的功耗,系统可满足节水灌溉的需求。

In order to solve the contradiction of uneven distribution of water resources in Yili area,improve the efficiency of water-saving irrigation,and promote the construction of intelligent farmland,a set of intelligent water-saving irrigation control system for agriculture in Yili area based on wireless sensor network is designed.The system takes STM single chip as the core,uses LoRa technology as the wireless transmission mode,and combines YL-69 capacitive soil moisture sensor,YF-S201 water flow sensor,2 W normally closed direct-acting water and gas universal solenoid valve multi-sensor combination to form a wireless sensor network.Tests show that the maximum communication distance can be obtained when the system is set at a height higher than the crop height.The node perception accuracy of the system is high,the absolute error is between 2%and 4%,the average packet loss rate is 2%,the system information transmission is relatively stable,and has low power consumption.The system can meet the needs and purposes of water-saving irrigation.