本文選題：無線傳感器網(wǎng)絡(luò) + Wi-Fi�。� 參考：《上海交通大學(xué)》2014年碩士論文

【摘要】：無線傳感器網(wǎng)絡(luò)(Wireless Sensor Networks, WSN)作為新一代傳感器網(wǎng)絡(luò),正越來越多地應(yīng)用到軍事領(lǐng)域、現(xiàn)代農(nóng)業(yè)、遠(yuǎn)程醫(yī)療、環(huán)境監(jiān)測等各個領(lǐng)域。因此對于傳統(tǒng)無線傳感器節(jié)點要實現(xiàn)自組織網(wǎng)絡(luò)的高效數(shù)據(jù)傳輸就成為無線傳感器節(jié)點新的挑戰(zhàn)。Wi-Fi作為目前使用比較多的一種短距離無線通信技術(shù)之一,具有傳輸速率快、覆蓋范圍廣、靈活的組網(wǎng)方式、系統(tǒng)安全性高等特點,使其在無線傳感器網(wǎng)絡(luò)的應(yīng)用越來越廣泛。而且這種基于IP的聯(lián)網(wǎng)技術(shù)能夠非常方便地與目前企業(yè)和家庭中的以太網(wǎng)進(jìn)行無縫連接,方便用戶使用。本文首先分析了無線傳感器網(wǎng)絡(luò)的體系結(jié)構(gòu)和一些常用的無線傳感器網(wǎng)絡(luò)應(yīng)用。通過對IEEE802.11/Wi-Fi的協(xié)議結(jié)構(gòu)、工作機(jī)制、Wi-Fi網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)和一些常用組網(wǎng)方式的分析,提供了一種采用Wi-Fi無線通信技術(shù)的無線傳感器網(wǎng)絡(luò)節(jié)點設(shè)計方案。本文的主要工作如下：(1)根據(jù)無線傳感器網(wǎng)絡(luò)節(jié)點的特點,設(shè)計并實現(xiàn)了采用Wi-Fi無線通信技術(shù)的無線傳感器網(wǎng)絡(luò)節(jié)點系統(tǒng)硬件平臺。其中,使用TI公司超低功耗微處理器MSP430FR5739作為主控制器,實現(xiàn)對加速度傳感器和溫度傳感器數(shù)據(jù)的采集和處理,并通過CC3000超低功耗Wi-Fi模塊實現(xiàn)了傳感器數(shù)據(jù)的無線傳輸。(2)設(shè)計了基于Wi-Fi技術(shù)的無線傳感器節(jié)點軟件系統(tǒng),其中包括對底層硬件及其接口的驅(qū)動和應(yīng)用程序的開發(fā),實現(xiàn)對加速度和溫度傳感器數(shù)據(jù)的實時采集和發(fā)送,以及對Wi-Fi網(wǎng)絡(luò)連接的建立等。(3)完成對傳感器節(jié)點硬件和軟件的設(shè)計之后,實現(xiàn)了對無線傳感器網(wǎng)絡(luò)系統(tǒng)的設(shè)計。首先傳感器節(jié)點采集加速度和溫度傳感器數(shù)據(jù),并發(fā)送給轉(zhuǎn)發(fā)節(jié)點,遠(yuǎn)程主機(jī)通過以太網(wǎng)接收到傳感器數(shù)據(jù)后,通過對這些數(shù)據(jù)的解析和處理,從而得到實時的加速度和溫度值。最后,通過相關(guān)實驗進(jìn)行驗證,證明了基于Wi-Fi技術(shù)的傳感器節(jié)點工作正常、能夠準(zhǔn)確地采集傳感器數(shù)據(jù),并成功與TCP/IP服務(wù)器之間建立連接,完成數(shù)據(jù)傳輸。同時,通過對Wi-Fi網(wǎng)絡(luò)性能測試和組網(wǎng)測試,進(jìn)一步證明了低功耗Wi-Fi技術(shù)在無線傳感器網(wǎng)絡(luò)的領(lǐng)域中的可用性。
[Abstract]:Wireless Sensor Networks (WSNs), as a new generation of sensor networks, is increasingly applied to military fields, modern agriculture, telemedicine, environmental monitoring and other fields. Therefore, for traditional wireless sensor nodes to realize efficient data transmission in ad hoc networks, it becomes a new challenge for wireless sensor nodes. Wi-Fi, as one of the most widely used short-range wireless communication technologies, has high transmission rate. It is widely used in wireless sensor networks due to its wide coverage, flexible networking and high system security. Moreover, the IP-based networking technology can be easily connected to the current enterprise and home Ethernet, which is easy for users to use. This paper first analyzes the architecture of wireless sensor networks and some commonly used wireless sensor network applications. Based on the analysis of IEEE 802.11 / Wi-Fi protocol structure, working mechanism, Wi-Fi network topology and some common networking methods, a wireless sensor network node design scheme based on Wi-Fi communication technology is proposed. The main work of this paper is as follows: (1) according to the characteristics of wireless sensor network nodes, the hardware platform of wireless sensor network node system based on Wi-Fi wireless communication technology is designed and implemented. Among them, the ultra-low power microprocessor MSP430FR5739 of TI Company is used as the main controller to collect and process the data of acceleration sensor and temperature sensor. The wireless transmission of sensor data is realized by CC3000 ultra-low power Wi-Fi module. (2) the wireless sensor node software system based on Wi-Fi technology is designed, which includes the driver of the underlying hardware and its interface and the development of the application program. After completing the hardware and software design of sensor node, the design of wireless sensor network system is realized after the real-time acquisition and transmission of acceleration and temperature sensor data, and the establishment of Wi-Fi network connection. First, the sensor node collects the acceleration and temperature sensor data and sends them to the forwarding node. After the remote host receives the sensor data through Ethernet, it parses and processes these data. Thus the real-time acceleration and temperature values are obtained. Finally, the experimental results show that the sensor node based on Wi-Fi technology works normally, can collect sensor data accurately, and successfully establish a connection with TCP / IP server to complete data transmission. At the same time, the availability of low-power Wi-Fi technology in wireless sensor networks is proved by testing the performance of Wi-Fi networks and networking.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP212.9;TN92

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