本文選題：大田圖像 + SimpliciTI網(wǎng)絡協(xié)議�。� 參考：《南京農(nóng)業(yè)大學》2015年碩士論文

【摘要】：隨著現(xiàn)代控制技術(shù)、微電子技術(shù)在農(nóng)業(yè)中的不斷滲透和應用,農(nóng)藝水平的不斷提高,農(nóng)業(yè)的發(fā)展已從傳統(tǒng)農(nóng)業(yè)逐漸轉(zhuǎn)變?yōu)楝F(xiàn)代農(nóng)業(yè),并且發(fā)展規(guī)模逐漸擴大。為生長作物提供最適應的環(huán)境,進而有效增加作物產(chǎn)量和品質(zhì),提高地區(qū)經(jīng)濟效益是現(xiàn)代化農(nóng)業(yè)發(fā)展的趨勢,獲取農(nóng)田所包含的信息是現(xiàn)代化農(nóng)業(yè)研究的基礎(chǔ)。其中農(nóng)田圖像信息是反應農(nóng)田情況的重要信息之一。針對現(xiàn)場安裝困難、布線復雜、線路老化和監(jiān)測死角等問題,有效解決農(nóng)田圖像信息采集系統(tǒng)傳輸方式的不足。本課題研究并設計一套基于SimpliciTI網(wǎng)絡協(xié)議的大田圖像采集與無線傳輸系統(tǒng),系統(tǒng)由以下三部分組成。農(nóng)田圖像定點采集網(wǎng)絡:系統(tǒng)采用MCU與RF分開設計的硬件匹配結(jié)構(gòu)。將SimpliciTI網(wǎng)絡協(xié)議移植到STM32硬件平臺。圖像采集模塊采用鋰電池供電,并引入sleep-wake up機制大幅降低圖像節(jié)點能耗。將采集到的圖像存儲到節(jié)點外擴的SD卡中,并分包經(jīng)中繼節(jié)點,路由轉(zhuǎn)發(fā)傳輸至網(wǎng)關(guān)節(jié)點.農(nóng)田圖像網(wǎng)關(guān)設備:網(wǎng)關(guān)節(jié)點和圖像節(jié)點采用相互兼容控制器,移植uIP協(xié)議棧,使用SPI接口與Ethernet模塊通信,實現(xiàn)無線傳感器網(wǎng)絡與外部網(wǎng)絡協(xié)議的轉(zhuǎn)換和物理連接。網(wǎng)關(guān)數(shù)據(jù)和外部無線網(wǎng)橋通過網(wǎng)口相連,將圖像數(shù)據(jù)傳輸至監(jiān)控室內(nèi)服務器進行存儲管理。遠程Web服務器·.Web服務器主要是遠程獲取圖像信息以及圖像查詢工作,分別由大田圖像數(shù)據(jù)庫、服務器應用軟件和Web系統(tǒng)構(gòu)成。本地服務器通過定向Wi-Fi設備實現(xiàn)和網(wǎng)關(guān)服務通信。其中農(nóng)田圖像數(shù)據(jù)庫是基于OraclelOg數(shù)據(jù)庫版本開發(fā),Web系統(tǒng)基于Hibernate框架設計,使用JSP開發(fā),通過Tomcat完成遠程Web服務器發(fā)布。系統(tǒng)整體測試運行穩(wěn)定、可靠,能夠順利采集圖像,無線傳感器網(wǎng)絡通過加入中繼節(jié)點組成網(wǎng)狀拓撲網(wǎng)絡,滿足無線組網(wǎng)獲取大田圖像信息的需求,課題使用定向Wi-Fi設備最遠可達500m,滿足大田距離要求,設計合理。并且實驗測試了圖像節(jié)點的通信參數(shù),包括誤碼率和包錯誤率,圖像數(shù)據(jù)共153600B,對原始圖像數(shù)據(jù)進行了增加BMP文件頭的恢復設計,對圖像采集節(jié)點進行點對點圖像無線傳輸單跳和多跳實驗測試,結(jié)果表明圖像無線傳輸系統(tǒng)的能力由傳輸速率、節(jié)點能耗、傳輸寬帶、節(jié)點路由功能等共同決定,系統(tǒng)整體設計為大田圖像采集無線化和組網(wǎng)簡單化提供了一種新的解決方案。
[Abstract]:With the continuous penetration and application of modern control technology, microelectronics technology in agriculture and the continuous improvement of agronomic level, the development of agriculture has gradually changed from traditional agriculture to modern agriculture, and the scale of development has gradually expanded. It is the trend of modern agriculture development to provide the most suitable environment for growing crops, and to increase crop yield and quality effectively. Obtaining the information contained in farmland is the basis of modern agricultural research. Among them, the field image information is one of the important information to reflect the farmland situation. In order to solve the problems such as difficult installation, complex wiring, aging of lines and monitoring dead angle, the shortage of transmission mode of field image information collection system is effectively solved. This paper studies and designs a field image acquisition and wireless transmission system based on SimpliciTI protocol. The system consists of the following three parts. Fixed-point acquisition network of farmland image: the system adopts hardware matching structure which is designed separately by MCU and RF. The SimpliciTI network protocol is transplanted to the STM32 hardware platform. The image acquisition module is powered by lithium battery, and the sleep-wake up mechanism is introduced to greatly reduce the energy consumption of image nodes. The collected images are stored in the SD card which is spread out of the node and subcontracted through the relay node and transmitted to the gateway node. Field image gateway equipment: the gateway node and image node adopt mutually compatible controller, transplant uIP protocol stack, use SPI interface to communicate with Ethernet module, realize the conversion and physical connection between wireless sensor network and external network protocol. The gateway data and the external wireless bridge are connected through the network port, and the image data is transmitted to the monitoring room server for storage and management. The remote Web server. The web server is mainly composed of field image database, server application software and Web system. The local server communicates with the gateway service through the directed Wi-Fi device. The farmland image database is developed based on the version of OraclelOg database. The web system is designed on the basis of Hibernate framework and developed with JSP. The remote Web server is published through Tomcat. The system runs stably and reliably, and can collect images smoothly. The wireless sensor network forms a network topology network by adding relay nodes to meet the needs of wireless network to obtain field image information. The application of directional Wi-Fi equipment can reach 500m, which meets the requirements of field distance and is reasonably designed. The communication parameters of the image node, including bit error rate and packet error rate, are tested experimentally. The image data is 153600B. the original image data is added to the BMP file header recovery design. The single-hop and multi-hop experiments of point-to-point image wireless transmission are carried out on the image acquisition nodes. The results show that the capability of the image wireless transmission system is determined by the transmission rate, node energy consumption, transmission broadband, node routing function and so on. The overall design of the system provides a new solution for field image collection wireless and network simplification.
【學位授予單位】：南京農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：S126;TP274.2;TN92

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