山地農業中WSN確定節點部署策略

司永潔

摘? ?要：針對山地農業中無線傳感器網絡（WSN）三角區域的無縫覆蓋問題，提出一種相似三角形網格部署策略。對任意三角形監測區域，利用幾何分析方法，推出節點感應半徑和節點間距的關系式，并設計出任意三角形監測區域的網格劃分方法，從節點感應半徑、覆蓋比例、覆蓋效率、節點個數以及網絡效率五個方面進行仿真實驗。結果表明，在山地農業三角區域中，相似三角形部署策略不僅能有效地避免三角監測區域的邊界漏洞問題，而且比正三角形和正方形部署方式節約了37%的節點，覆蓋效率和網絡效率提高了約2倍。

關鍵詞：WSN;三角區域;無縫覆蓋;節點部署;邊界漏洞

中圖分類號：TP393? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 文獻標識碼：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