本文選題：無線傳感器網(wǎng)絡(luò)　切入點：移動節(jié)點定位　出處：《河北工程大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：無線傳感器網(wǎng)絡(luò)(Wireless Sensor Networks,WSN)技術(shù)發(fā)展迅速,節(jié)點定位技術(shù)作為WSN的主要支撐技術(shù)之一,其所提供的節(jié)點位置信息是該類網(wǎng)絡(luò)應(yīng)用的基礎(chǔ)。消防機器人在滅火救援過程中具有較高的應(yīng)用價值,該類機器人可以在火災(zāi)救援過程中第一時間進入災(zāi)難現(xiàn)場,進行數(shù)據(jù)采集、處理、反饋,有效地解決消防人員在上述場所面臨的人身安全、信息獲取不足等問題。針對該場景,本文將WSN技術(shù)應(yīng)用于消防救援場景,提出了一種基于連通度和加權(quán)校正的移動節(jié)點定位方法,工作重點是基于該方法設(shè)計了一套定位系統(tǒng),用以輔助消防機器人對待救人員進行定位。首先,介紹了WSN定位技術(shù)和消防機器人的發(fā)展?fàn)顩r,并闡明了消防機器人定位系統(tǒng)在消防救援中的應(yīng)用價值。然后歸納總結(jié)了已有的WSN定位技術(shù),并對各項定位技術(shù)作了優(yōu)缺點分析,在此基礎(chǔ)上提出了一種基于連通度和加權(quán)校正的移動節(jié)點定位方法:在未知節(jié)點定位過程中,根據(jù)節(jié)點間連通度的大小選取參與定位的信標(biāo)節(jié)點,利用加權(quán)校正方法修正接收信號強度指示的測距信息,獲得足夠的信標(biāo)信息后使用最小二乘法計算出未知點的坐標(biāo)。仿真分析表明,節(jié)點通信半徑和信標(biāo)密度在一定范圍內(nèi)變化時,該算法均表現(xiàn)出良好的性能。然后,將上述移動節(jié)點定位算法應(yīng)用于消防領(lǐng)域,設(shè)計出消防機器人的定位系統(tǒng)。該定位系統(tǒng)主要包括匯聚節(jié)點、信標(biāo)節(jié)點和定位節(jié)點。依據(jù)功能需求對節(jié)點進行了硬件設(shè)計,節(jié)點主要包括CC2431模塊、接口模塊、射頻模塊和電源模塊等。并根據(jù)系統(tǒng)定位流程對各節(jié)點的數(shù)據(jù)發(fā)送、接收流程進行了程序設(shè)計。最后,分析了信標(biāo)布置方法,并組建起無線傳感器網(wǎng)絡(luò),測試了系統(tǒng)的定位精度。
[Abstract]:Wireless Sensor Networks (WSNs) technology is developing rapidly in wireless sensor networks. Node location technology is one of the main supporting technologies of WSN. The node location information provided by it is the basis of this kind of network application. The fire fighting robot has higher application value in the process of fire fighting and rescue, and this kind of robot can enter the disaster scene at the first time in the course of fire rescue. Data collection, processing, feedback, effectively solve the fire protection personnel in the above-mentioned places faced by the personal safety, insufficient access to information and other issues. In view of this scenario, this paper applies WSN technology to the scene of fire rescue, A mobile node location method based on connectivity and weighting correction is proposed. Based on this method, a set of positioning system is designed to assist the fire protection robot to locate the rescuer. This paper introduces the development of WSN positioning technology and fire control robot, and expounds the application value of fire robot positioning system in fire protection and rescue. Then, the existing WSN positioning technology is summarized, and the advantages and disadvantages of each positioning technology are analyzed. On this basis, a mobile node location method based on connectivity and weighting correction is proposed. In the process of unknown node location, the beacon nodes participating in the location are selected according to the degree of connectivity between nodes. The weighted correction method is used to correct the ranging information indicated by the received signal strength, and the coordinates of the unknown points are calculated by the least square method after obtaining enough beacon information. The simulation results show that, When the node communication radius and beacon density change in a certain range, the algorithm shows good performance. Then, the above mobile node location algorithm is applied to the field of fire protection. The positioning system of fire protection robot is designed. The positioning system mainly includes convergent node, beacon node and positioning node. According to the function requirement, the hardware of the node is designed. The node includes CC2431 module and interface module. Radio frequency module and power supply module, etc. According to the system positioning process, the data transmission and receive flow of each node are programmed. Finally, the method of beacon arrangement is analyzed, and the wireless sensor network is constructed. The positioning accuracy of the system is tested.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TP242;TP212.9;TN929.5

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