【摘要】：農(nóng)業(yè)物聯(lián)網(wǎng)中現(xiàn)有的基于主從節(jié)點的無線傳感網(wǎng)絡(luò)中,主節(jié)點通常采用GPRS建立TCP連接,并傳輸數(shù)據(jù),雖然方便但費用較高,而且一旦GPRS無法連接(SIM卡欠費、GPRS信號太弱等等原因)那么主節(jié)點無法將數(shù)據(jù)傳輸?shù)椒⻊?wù)器,造成數(shù)據(jù)丟失或者實時性丟失。此外,服務(wù)器和主節(jié)點、主節(jié)點和從節(jié)點之間的通信都是單方面的：從節(jié)點負責(zé)采集數(shù)據(jù)并將采集到的數(shù)據(jù)發(fā)送給主節(jié)點,但不管主節(jié)點是否接收到數(shù)據(jù)；同樣的主節(jié)點也只是將數(shù)據(jù)通過GPRS發(fā)出去,卻不管服務(wù)器是否有接收到。針對無線傳感網(wǎng)絡(luò)中單一數(shù)據(jù)通路以及單向通信問題,研究并設(shè)計了異構(gòu)通信平臺以及異構(gòu)通信系統(tǒng)。異構(gòu)通信平臺是基于STM32設(shè)計的。異構(gòu)通信平臺上搭載了WIFI、GPRS以及ETHERNET三種通信方式。異構(gòu)通信系統(tǒng)采用“一問一答”的雙向通信模型,并且可以自適應(yīng)選擇通信方式,實現(xiàn)了功率、速率等資源的自管理、自調(diào)節(jié)、自配置。本論文分為五大部分。首先,論文敘述了物聯(lián)網(wǎng)的發(fā)展并講述了異構(gòu)通信平臺設(shè)計的必要性；其次介紹了與本文有關(guān)的TCP/IP協(xié)議族以及其他硬件接口和操作系統(tǒng),第三詳細闡述了異構(gòu)通信系統(tǒng)的功能以及其整體框架；第四,講述了異構(gòu)通信系統(tǒng)的硬件設(shè)計；第五,給出了異構(gòu)通信系統(tǒng)的軟件設(shè)計,包括通信協(xié)議、下位機、配置軟件以及服務(wù)器軟件的設(shè)計；通過最后的測試結(jié)果,本論文設(shè)計的異構(gòu)通信系統(tǒng)達到了設(shè)計要求。
[Abstract]:In the existing wireless sensor networks based on master and slave nodes in the agricultural Internet of things, the master node usually uses GPRS to establish the TCP connection and transmit data, which is convenient but expensive, and once the GPRS is unable to connect (SIM card arrears), GPRS signal is too weak and so on) then the master node can not transmit data to the server, resulting in data loss or real-time loss. In addition, the communication between the server and the primary node, the master node and the slave node is unilateral: the slave node is responsible for collecting data and sending the collected data to the master node, regardless of whether the master node receives the data or not; The same master simply sends data through the GPRS regardless of whether the server receives it or not. Aiming at the problem of single data path and unidirectional communication in wireless sensor network, the heterogeneous communication platform and heterogeneous communication system are studied and designed. Heterogeneous communication platform is based on STM32 design. On the heterogeneous communication platform, there are three communication modes, WIFI,GPRS and ETHERNET. The heterogeneous communication system adopts a two-way communication model of "one question and one answer", and it can adaptively choose the communication mode, which realizes the self-management, self-adjustment and self-configuration of power, rate and other resources. This paper is divided into five parts. Firstly, the paper describes the development of Internet of things and the necessity of designing heterogeneous communication platform. Secondly, it introduces the TCP/IP protocol family and other hardware interfaces and operating systems related to this paper. The third part elaborates the function of the heterogeneous communication system and its whole frame, fourth, describes the hardware design of the heterogeneous communication system. Fifthly, the software design of heterogeneous communication system is given, including the design of communication protocol, lower computer, configuration software and server software, and through the final test results, the heterogeneous communication system designed in this paper meets the design requirements.
【學(xué)位授予單位】：復(fù)旦大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP391.44;TN929.5

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本文編號：2333106