基于无线传感器网络的土壤信息采集系统

A Soil Information Acquisition System Based on Wireless Sensor Network

针对土壤信息采集的需要,提出了把无线传感器应用于土壤信息采集的思路,研究设计了一套基于无线传感器网络的土壤信息采集系统。节点设计采用低功耗MSP430单片机和CC2430ZigBee无线射频芯片完成,可采集土壤温度、湿度和土壤含水率。系统网关设计基于ARM7系列S3C44B0X、GPRS模块SIM100,搭建了农田中的平面型无线信息传输网络拓扑结构。实验仿真结果表明,整个系统的伸缩性较好,当土壤含水率太大或某种因素导致某些传感器节点损坏,系统中的其他部分仍能持续正常工作,具有自组织重新恢复的功能。该系统能够实时地显示出各节点的土壤温度、湿度和含水率参数,实现土壤信息的实时采集,为农田灌溉的实施提供了有力依据。

For meeting the needs of information collection of soil, this paper presents a new idea of using wireless sensor network （WSN） for soil information acquisition system. A soil information collection system is developed based on the wireless sensor network. It puts forward the design of wireless sensor network node based on low power consumption MSP430 microcontroller and CC2430 radio frequency chip, which can collect soil temperature,humidity,volumetric water content of the soil. The system gateway design using ARM7 based chip S3C44BOX and GPRS module SIM100 are simply introduced. Then a reasonable wireless information transportation network topology and data protocol are constructed. The simulation result indicates that the scalability of the whole system is good. When the volumetric water content of the soil is too large or some factors cause damage of some sensor nodes, other part of the system can still continue to work and has restore function. The system can reorganize even if one node has been damaged. Having gathered the value of soil temperature, humidity and volumetric water content of the soil successfully, this design can be used for real time information acquisition of soil, and provides a strong basis for the implementation of farmland irrigation.