摘要：

山地果园环境复杂多变,无线射频信号传播的稳定性和可靠性受到严重影响,基于传统的无线传播模型设计的数据采集策略可能会面临无法发挥预期效能甚至失用的问题。为此,提出一种基于多属性评价模型的无线传感器网络数据采集系统,介绍系统的体系结构,给出簇首选举、路由下一跳选择等关键技术的实现方法。系统仿真与分析结果表明,该系统能够综合衡量各项评价指标,簇首选举和路由下一跳选择较为科学、合理,能较好地适应有损无线通信链路行为下山地果园的数据采集需求。

关键词: 可接收信号强度指示, 多属性综合评价模型, 数据采集系统, 分簇路由协议, 无线传感器网络

Abstract:

Mountainous environmental factors are complicated and changeable,the stability and reliability of radio frequency signal propagation is also severely affected.Data collection strategy based on traditional radio propagation model may not play the expected performance even fall into disuse.In view of this phenomenon,this paper proposes a Wireless Sensor Network(WSN)data acquisition system based on multi-attribute evaluation model.The architecture and working mechanism of the system is introduced.The key implementation technology of cluster head election and next routing hop selection is described.Simulation and analysis verify its performance.The results show that the system is able to measure the comprehensive evaluation indexes comprehensively,which can determine the cluster head and next routing hop scientifically and reasonably,and can better adapt to the data collection needs of mountainous orchard precision management.

Key words: Received Signal Strength Indication(RSSI), multiple-attribute comprehensive evaluation model, data acquisition system, cluster routing protocol, Wireless Sensor Network(WSN)

中图分类号: 

• TP393