司永洁

摘   要：针对山地农业中无线传感器网络（WSN）三角区域的无缝覆盖问题，提出一种相似三角形网格部署策略。对任意三角形监测区域，利用几何分析方法，推出节点感应半径和节点间距的关系式，并设计出任意三角形监测区域的网格划分方法，从节点感应半径、覆盖比例、覆盖效率、节点个数以及网络效率五个方面进行仿真实验。结果表明，在山地农业三角区域中，相似三角形部署策略不仅能有效地避免三角监测区域的边界漏洞问题，而且比正三角形和正方形部署方式節约了37%的节点，覆盖效率和网络效率提高了约2倍。

关键词：WSN;三角区域;无缝覆盖;节点部署;边界漏洞

中图分类号：TP393                                                    文献标识码：A

Determined WSN Node Deployment Strategy in Mountain Agriculture

SI Yong-jie

（Qiannan Normal College for Nationalities，Duyun，Guizhou 558000，China）

Abstract： In order to address the full-coverage issues of WSN in triangular areas in mountain agriculture，a determined grid deployment strategy is proposed based on similar triangles. Using geometric analysis， it derived the relation formula of sensing radius and spacing forany triangle monitoring area，and designed a grid division method for any triangle monitoring area. The simulation results show that the proposed strategy solves boundary loopholes problem in triangle area effectively， compared with regular triangle and square deployment strategy in nodes number， sensing radius， coverage proportion and network efficiency， and saves about 37% node numbers， improves about two times of coverage-efficiency and network-efficiency.

Key words：WSN;triangle area;seamless-coverage;node-deployment;boundary loophole