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無線地震儀傳感網(wǎng)組網(wǎng)協(xié)議優(yōu)化研究

發(fā)布時間:2019-03-28 17:26
【摘要】:無纜自存儲地震儀的無纜化是野外施工追求的重要目標(biāo)之一。但無纜化的同時,狀態(tài)信息及勘探數(shù)據(jù)不能實(shí)時回收成為一個影響其應(yīng)用的嚴(yán)重瓶頸。無線地震儀傳感網(wǎng)是由大量的無纜地震儀節(jié)點(diǎn)組成的無線網(wǎng)絡(luò),在地質(zhì)勘探領(lǐng)域有廣闊的應(yīng)用前景,F(xiàn)有的無線傳感網(wǎng)組網(wǎng)協(xié)議不能直接應(yīng)用于地震儀傳感網(wǎng),野外低功耗要求地震儀節(jié)點(diǎn)的通信能力和組網(wǎng)協(xié)議的能耗要小,一次勘探過程中需要的地震儀節(jié)點(diǎn)眾多,節(jié)點(diǎn)上的數(shù)據(jù)量又大,為實(shí)時回收地震儀節(jié)點(diǎn)上的狀態(tài)信息及數(shù)據(jù),必須根據(jù)地震勘探的工作特點(diǎn),研究有效的自組網(wǎng)協(xié)議是實(shí)現(xiàn)無線地震儀傳感網(wǎng)的關(guān)鍵問題。本文結(jié)合公益性行業(yè)基金項(xiàng)目《無纜自定位地震勘探系統(tǒng)研制》的實(shí)際需求,開展自組網(wǎng)協(xié)議的優(yōu)化研究。 針對地震勘探的實(shí)際工作需求,分別研究地震傳感網(wǎng)中的帶狀拓?fù)浜头疥嚑钗锢硗負(fù)湎碌慕M網(wǎng)協(xié)議優(yōu)化算法,主要工作如下: 1)地址分配算法的研究。分析了Cluster-Tree中的分布式地址分配算法,由于其不能滿足無線地震儀傳感網(wǎng)中百跳級以上的需求,提出了一種度有限的極大深度樹地址分配算法,根據(jù)帶狀物理拓?fù)涞奶攸c(diǎn),通過限制邏輯樹中每層的路由節(jié)點(diǎn)的數(shù)目設(shè)計新型樹形結(jié)構(gòu),減少了浪費(fèi)的預(yù)留地址數(shù),擴(kuò)展了路由能夠支持的網(wǎng)絡(luò)最大深度,并對算法進(jìn)行了仿真分析。 2)基于帶狀拓?fù)涞慕M網(wǎng)路由改進(jìn)及實(shí)現(xiàn);谡撐母倪M(jìn)的地址分配算法,針對無線地震儀傳感網(wǎng)中帶狀物理拓?fù)涞奶攸c(diǎn),設(shè)計并實(shí)現(xiàn)了適用于帶狀物理拓?fù)涞慕M網(wǎng)協(xié)議。從入網(wǎng)喚醒、選擇父節(jié)點(diǎn)和解決主線回繞三個方面進(jìn)行重點(diǎn)研究,改進(jìn)了路由尋路機(jī)制,提出了新的路由維護(hù)機(jī)制,重點(diǎn)解決了主線節(jié)點(diǎn)一旦斷開時出現(xiàn)大面積網(wǎng)絡(luò)失效的問題。 3)針對三維地震勘探中方陣狀物理拓?fù)涞奶攸c(diǎn),結(jié)合無線定位算法將地震儀方陣拓?fù)浞譃槎鄠帶狀拓?fù)?設(shè)計并實(shí)現(xiàn)相應(yīng)的組網(wǎng)及維護(hù)機(jī)制。研究了基于RSSI改進(jìn)的加權(quán)質(zhì)心定位算法,使用了動態(tài)獲取路徑損耗因子的機(jī)制。用改進(jìn)的定位算法將方陣狀拓?fù)浞指顬閹钔負(fù)?再分別對每個子拓?fù)浞謩e組網(wǎng),并設(shè)計入網(wǎng)機(jī)制和維護(hù)機(jī)制。 4)在OMNET++平臺下對帶狀拓?fù)浜头疥嚑钔負(fù)涞慕M網(wǎng)協(xié)議分別進(jìn)行仿真。研究了帶狀拓?fù)溟L度、網(wǎng)絡(luò)節(jié)點(diǎn)密度對帶狀組網(wǎng)的影響和拓?fù)淝懈睢⑼負(fù)湟?guī)模對方陣狀拓?fù)浣M網(wǎng)的影響。最后在嵌入式平臺實(shí)現(xiàn)了帶狀組網(wǎng)協(xié)議并進(jìn)行組網(wǎng)測試。
[Abstract]:The untwisting of the cable-free self-storage seismograph is one of the important goals in the field construction. But at the same time, the state information and exploration data can not be recovered in real time as a serious bottleneck affecting its application. The wireless seismograph sensing network is a wireless network composed of a large number of cable-less seismograph nodes, and has wide application prospect in the field of geological exploration. the prior wireless sensor network networking protocol can not be directly applied to the seismograph sensing network, the field low-power consumption requires the communication capability of the seismograph node and the energy consumption of the networking protocol to be small, the number of seismograph nodes required in the one-time exploration process is large, the data volume on the node is large, In order to recover the state information and data of the seismograph node in real time, it is necessary to study the effective self-networking protocol to realize the key problem of the sensor network of the wireless seismograph according to the characteristics of the seismic exploration. In this paper, the research on the optimization of the self-networking protocol is carried out in connection with the actual demand of the non-cable self-positioning seismic exploration system. According to the actual work demand of the seismic exploration, the network protocol optimization algorithm under the strip-like topology and the matrix-like physical topology in the seismic sensing network is respectively studied, and the main work is as follows: lower:1) address assignment algorithm In this paper, the distributed address assignment algorithm in Cluster-Tree is analyzed, because it can't meet the requirement of more than 100 hops in the sensor network of the wireless seismograph, a finite depth tree address assignment algorithm with limited degree is proposed, which is based on the band-shaped physical topology According to the method, the novel tree structure is designed by limiting the number of the routing nodes in each layer in the logic tree, the wasted reserved address number is reduced, the maximum depth of the network which can be supported by the route is expanded, and the algorithm is simulated true analysis.2) Network-based routing based on ribbon topology Improvement and implementation. Based on the improved address assignment algorithm, the paper designs and implements the band-shaped physical topology for the characteristics of the band-shaped physical topology in the sensor network of the wireless seismograph. In this paper, a new routing maintenance mechanism is proposed, and a new route maintenance mechanism is proposed, which mainly solves the problem that the main line node has large area network once it is disconnected to solve the problem of failure.3) In view of the characteristics of the matrix-like physical topology in the three-dimensional seismic exploration, the matrix topology of the seismograph is divided into a plurality of strip-shaped topologies in combination with a wireless positioning algorithm, In this paper, a weighted centroid localization algorithm based on the improvement of RSSI is studied, and the dynamic acquisition path is used. the matrix-like topology is divided into a band-like topology by an improved positioning algorithm, and each sub-topology is respectively connected with each sub-topology, and the network is designed mechanism and maintenance mechanism.4) Group-like topology and matrix-like topology under the OPMNET ++ platform The network protocols are simulated respectively. The effects of the length of the strip-like topology and the density of the network node on the band-like network and the topology cutting and the topology scale of the network are studied. In the end, the band-form networking is realized in the embedded platform
【學(xué)位授予單位】:北京郵電大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:P631.43;TN929.5;TP212.9

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