【摘要】：隨著嵌入式技術(shù)、無線通訊技術(shù)的發(fā)展,使得具有低功耗、多功能、低成本等優(yōu)點(diǎn)的無線傳感器網(wǎng)絡(luò)(WSN)在各行各業(yè)得到廣泛的應(yīng)用。與此同時,因?yàn)閭鞲衅鞴?jié)點(diǎn)攜帶能量有限等缺點(diǎn),使得WSN也暴露出了許多的缺點(diǎn)和不足。為了節(jié)省節(jié)點(diǎn)能量、延長WSN工作時間,許多WSN節(jié)能方法涌現(xiàn)出來。其中,WSN的覆蓋控制方法因?yàn)槟苡行У墓?jié)省節(jié)點(diǎn)能量、提高網(wǎng)絡(luò)服務(wù)質(zhì)量,而得到了眾多學(xué)者的廣泛關(guān)注。本文在分析研究WSN各類覆蓋控制方法的基礎(chǔ)上,針對現(xiàn)有覆蓋控制方法需要復(fù)雜計算,并且通常忽略了傳感器節(jié)點(diǎn)自身工作特性這一問題,提出了一種新的傳感器網(wǎng)絡(luò)覆蓋控制方法:首先網(wǎng)絡(luò)中所有節(jié)點(diǎn)為休眠狀態(tài),隨機(jī)選擇一個節(jié)點(diǎn)開始工作。該節(jié)點(diǎn)以兩種不同的通訊半徑向其鄰居節(jié)點(diǎn)發(fā)送報文,對鄰居區(qū)域進(jìn)行劃分,使得其鄰居節(jié)點(diǎn)集被劃分成兩類不同節(jié)點(diǎn)集合:適用于喚醒的節(jié)點(diǎn)集合——外點(diǎn)集合,其所在區(qū)域?yàn)橥恻c(diǎn)限定區(qū)域;適用于替換工作節(jié)點(diǎn)的節(jié)點(diǎn)集合一內(nèi)點(diǎn)集合,其所在的區(qū)域?yàn)閮?nèi)點(diǎn)限定區(qū)域。隨后網(wǎng)絡(luò)進(jìn)入初始化階段,每一個工作節(jié)點(diǎn)根據(jù)優(yōu)先級從其外點(diǎn)限定區(qū)域內(nèi)隨機(jī)選擇一個休眠節(jié)點(diǎn)進(jìn)行喚醒。初始化階段后網(wǎng)絡(luò)達(dá)到穩(wěn)定階段,當(dāng)有節(jié)點(diǎn)電量耗盡后,會隨機(jī)從其內(nèi)點(diǎn)限定區(qū)域內(nèi)選擇一個節(jié)點(diǎn)喚醒,來填補(bǔ)失效節(jié)點(diǎn)所造成的覆蓋空洞。因?yàn)檫x取節(jié)點(diǎn)的距離在一個可控范圍內(nèi),所以能有效的控制傳感器節(jié)點(diǎn)工作時所造成的冗余覆蓋面積。最后進(jìn)行了仿真實(shí)驗(yàn),得出實(shí)驗(yàn)結(jié)果,并與典型的覆蓋控制算法的仿真結(jié)果做了對比。結(jié)果表明,本文中提出的方法在可以滿足需求網(wǎng)絡(luò)覆蓋度的基礎(chǔ)上,能減少工作節(jié)點(diǎn)數(shù)量,降低覆蓋冗余度,從而達(dá)到了節(jié)省節(jié)點(diǎn)能量,延長網(wǎng)絡(luò)生存時間的目標(biāo)。
[Abstract]:With the development of embedded technology and wireless communication technology, wireless sensor network (WSN), which has the advantages of low power consumption, multi-function and low cost, has been widely used in various industries. At the same time, because the sensor nodes carry limited energy and other shortcomings, WSN also exposed a lot of shortcomings and shortcomings. In order to save node energy and prolong the working time of WSN, many WSN energy saving methods have emerged. Among them, the coverage control method of WSN has been widely concerned by many scholars because it can effectively save energy of nodes and improve the quality of network service. Based on the analysis and study of various coverage control methods in WSN, the existing coverage control methods need complex calculation, and the performance of sensor nodes is usually ignored. A new coverage control method for sensor networks is proposed. Firstly, all nodes in the network are dormant and one node is selected randomly to start work. The node sends messages to its neighbor nodes with two different communication radii, and divides the neighbor regions into two different sets of nodes: the set of nodes suitable for wake-up, the set of outer points, The region is defined by the outer point. The set of nodes suitable for replacing working nodes is a set of interiors in which the region is defined as the inner point. Then the network is initialized and each working node randomly selects a dormant node to wake up according to its priority. After the initialization stage the network reaches the stable stage. When the power of the node is exhausted a node wake-up is randomly selected from the limited area within the node to fill the coverage void caused by the failure node. Because the distance of the sensor node is in a controllable range, the redundant coverage area can be effectively controlled when the sensor node is working. Finally, the simulation results are obtained and compared with those of the typical overlay control algorithm. The results show that the proposed method can reduce the number of working nodes and reduce the coverage redundancy on the basis of satisfying the requirements of network coverage, thus achieving the goal of saving node energy and prolonging the network lifetime.
【學(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP212.9;TN929.5

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 黃月;吳成東;張云洲;程龍;夏志佳;;混合無線傳感器網(wǎng)絡(luò)覆蓋空洞修復(fù)策略[J];江南大學(xué)學(xué)報(自然科學(xué)版);2012年04期

2 李超良;邢蕭飛;劉躍華;;一種新型覆蓋連通率計算方法[J];計算機(jī)應(yīng)用;2011年12期

3 班冬松;溫俊;蔣杰;竇文華;;移動無線傳感器網(wǎng)絡(luò)k-柵欄覆蓋構(gòu)建算法[J];軟件學(xué)報;2011年09期

4 桂小林;何欣;尹柯;;基于目標(biāo)覆蓋的無線傳感器網(wǎng)絡(luò)的連通性優(yōu)化部署方法[J];小型微型計算機(jī)系統(tǒng);2011年09期

5 孟凡治;王換招;何暉;;基于聯(lián)合感知模型的無線傳感器網(wǎng)絡(luò)連通性覆蓋協(xié)議[J];電子學(xué)報;2011年04期

6 王換招;孟凡治;李增智;;高效節(jié)能的無線傳感器網(wǎng)絡(luò)覆蓋保持協(xié)議[J];軟件學(xué)報;2010年12期

7 司敏山;高藝;;基于太陽能的溫室無線傳感器網(wǎng)絡(luò)監(jiān)測系統(tǒng)設(shè)計[J];無線通信技術(shù);2010年02期

8 李建中;高宏;;無線傳感器網(wǎng)絡(luò)的研究進(jìn)展[J];計算機(jī)研究與發(fā)展;2008年01期

9 任彥;張思東;張宏科;;無線傳感器網(wǎng)絡(luò)中覆蓋控制理論與算法[J];軟件學(xué)報;2006年03期

10 崔莉,鞠海玲,苗勇,李天璞,劉巍,趙澤;無線傳感器網(wǎng)絡(luò)研究進(jìn)展[J];計算機(jī)研究與發(fā)展;2005年01期

相關(guān)博士學(xué)位論文 前2條

1 張晉;無線傳感器網(wǎng)絡(luò)覆蓋控制算法研究[D];哈爾濱工程大學(xué);2010年

2 范高俊;無線傳感器網(wǎng)絡(luò)覆蓋性能評估與提高[D];國防科學(xué)技術(shù)大學(xué);2009年

，

本文編號：2308790