司永潔

摘? ?要：針對山地農(nóng)業(yè)中無線傳感器網(wǎng)絡(luò)（WSN）三角區(qū)域的無縫覆蓋問題，提出一種相似三角形網(wǎng)格部署策略。對任意三角形監(jiān)測區(qū)域，利用幾何分析方法，推出節(jié)點(diǎn)感應(yīng)半徑和節(jié)點(diǎn)間距的關(guān)系式，并設(shè)計(jì)出任意三角形監(jiān)測區(qū)域的網(wǎng)格劃分方法，從節(jié)點(diǎn)感應(yīng)半徑、覆蓋比例、覆蓋效率、節(jié)點(diǎn)個(gè)數(shù)以及網(wǎng)絡(luò)效率五個(gè)方面進(jìn)行仿真實(shí)驗(yàn)。結(jié)果表明，在山地農(nóng)業(yè)三角區(qū)域中，相似三角形部署策略不僅能有效地避免三角監(jiān)測區(qū)域的邊界漏洞問題，而且比正三角形和正方形部署方式節(jié)約了37%的節(jié)點(diǎn)，覆蓋效率和網(wǎng)絡(luò)效率提高了約2倍。

關(guān)鍵詞：WSN;三角區(qū)域;無縫覆蓋;節(jié)點(diǎn)部署;邊界漏洞

中圖分類號：TP393? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 文獻(xiàn)標(biāo)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