本文選題：無線傳感器網(wǎng)絡(luò)　切入點(diǎn)：DV-Hop算法　出處：《寧夏大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：在社會高速發(fā)展的今天,車輛日益增多,如何利用高科技手段對車輛進(jìn)行有效管控變得越來越重要。傳統(tǒng)的基于計(jì)算機(jī)技術(shù)和網(wǎng)絡(luò)技術(shù)的車輛管理系統(tǒng)存在諸多弊端,如管理模式功能有限,系統(tǒng)結(jié)構(gòu)較為復(fù)雜,成本較高等。無線傳感器網(wǎng)絡(luò)(WSN)作為一種新興的網(wǎng)絡(luò)技術(shù),近幾年得到了很大的發(fā)展。由于WSN可擴(kuò)展性強(qiáng)、覆蓋面積廣、節(jié)點(diǎn)成本低、信息處理能力強(qiáng)等特點(diǎn),特別適合應(yīng)用于車輛管理中。本文針對傳統(tǒng)車輛管理系統(tǒng)存在的弊端,設(shè)計(jì)并實(shí)現(xiàn)了基于無線傳感器網(wǎng)絡(luò)的車輛監(jiān)測系統(tǒng)。本文首先介紹了無線傳感器網(wǎng)絡(luò)定位技術(shù)。然后,對DV-HOP算法進(jìn)行了詳細(xì)介紹同時(shí)在現(xiàn)有的DV-HOP定位算法的基礎(chǔ)上,對其改進(jìn),提出了改進(jìn)的DV-HOP定位算法。改進(jìn)的DV-HOP定位算法,主要由三個(gè)階段組成:第一階段是利用傳感器節(jié)點(diǎn)的自組織性,計(jì)算各個(gè)已知節(jié)點(diǎn)之間的平均跳距;第二階段是對第一階段所獲取的平均跳距進(jìn)行修正處理;第三階段是利用修正的平均跳距值確定已知節(jié)點(diǎn)與未知節(jié)點(diǎn)的距離,然后進(jìn)行三邊定位計(jì)算,最終確定未知節(jié)點(diǎn)坐標(biāo)。這種改進(jìn)的DV-HOP定位算法減小了已知節(jié)點(diǎn)與未知節(jié)點(diǎn)之間距離的誤差。在系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)部分,首選分析了車輛監(jiān)測系統(tǒng)的功能需求和性能需求,在此基礎(chǔ)上設(shè)計(jì)了系統(tǒng)的總體架構(gòu),進(jìn)而闡述了對系統(tǒng)硬件與軟件的設(shè)計(jì)。最后,構(gòu)建了傳感器網(wǎng)絡(luò)測試環(huán)境,對系統(tǒng)的各項(xiàng)性能進(jìn)行了測試。本文主要研究了以下幾個(gè)方面:第一,對于傳統(tǒng)定位系統(tǒng)與無線傳感器網(wǎng)絡(luò)的定位系統(tǒng)進(jìn)行比較,找出傳統(tǒng)定位系統(tǒng)定位中存在的缺點(diǎn)與不足之處;第二,對DV-HoP算法進(jìn)行介紹,并對其中存在的不足進(jìn)行改進(jìn),提高定位精度;第三,設(shè)計(jì)和實(shí)現(xiàn)定位更為精準(zhǔn)的車輛監(jiān)測系統(tǒng),并對系統(tǒng)進(jìn)行測試與完善。
[Abstract]:With the rapid development of society, the number of vehicles is increasing day by day. It is becoming more and more important to use high-tech means to effectively control vehicles. There are many drawbacks in the traditional vehicle management system based on computer technology and network technology. For example, the function of management mode is limited, the system structure is more complex, and the cost is high. As a new network technology, Wireless Sensor Network (WSN) has been greatly developed in recent years. The node cost is low, the information processing ability is strong and so on, which is especially suitable for the vehicle management. This paper aims at the disadvantages of the traditional vehicle management system. The vehicle monitoring system based on wireless sensor network is designed and implemented. Firstly, the location technology of wireless sensor network is introduced in this paper. Then, the DV-HOP algorithm is introduced in detail and improved on the basis of the existing DV-HOP localization algorithm. An improved DV-HOP localization algorithm is proposed. The improved DV-HOP localization algorithm is composed of three stages: the first stage is to calculate the average hopping distance between each known node by using the self-organization of sensor nodes; In the second stage, the average hopping distance obtained in the first stage is modified. In the third stage, the distance between the known node and the unknown node is determined by the modified average hop distance, and then the triangulation is carried out. Finally, the unknown node coordinates are determined. The improved DV-HOP localization algorithm reduces the distance error between the known node and the unknown node. In the part of system design and implementation, the functional and performance requirements of the vehicle monitoring system are first analyzed. On this basis, the overall architecture of the system is designed, and then the hardware and software design of the system is described. Finally, the testing environment of sensor network is constructed. The performance of the system is tested. This paper mainly studies the following aspects: first, the traditional positioning system and the wireless sensor network positioning system are compared. Find out the shortcomings and shortcomings of the traditional positioning system; second, introduce the DV-HoP algorithm, and improve the shortcomings to improve the positioning accuracy; third, design and implement a more accurate vehicle monitoring system, The system is tested and perfected.
【學(xué)位授予單位】：寧夏大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP212.9;TN929.5;TP274

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