本文選題：農業(yè)物聯(lián)網(wǎng) + 中間件��； 參考：《東華大學》2014年碩士論文

【摘要】：物聯(lián)網(wǎng)技術和農業(yè)信息化息息相關,為實現(xiàn)現(xiàn)代農業(yè)集約高產、智能管控、預測分析等提供了堅實的基礎。本論文面向物聯(lián)網(wǎng),針對農業(yè)現(xiàn)場數(shù)據(jù)傳輸?shù)奶攸c,研究設計了農田數(shù)據(jù)傳輸中間件,具有良好的農業(yè)數(shù)據(jù)傳輸應用價值和廣泛的應用領域。 本論文依托上海市某農業(yè)公司的中間件項目,通過采集上海崇明某實驗農場的農業(yè)環(huán)境信息和農作物生長信息數(shù)據(jù)作為數(shù)據(jù)源,研究建立了針對農業(yè)數(shù)據(jù)的傳輸中間件模型,對于模型的每層結構做了具體的研究,最后進行系統(tǒng)實現(xiàn)并展示了實時多源異構數(shù)據(jù)的接收和人機交互界面。本文主要實現(xiàn)了以下幾個方面： 設計了面向物聯(lián)網(wǎng)的農田數(shù)據(jù)傳輸中間件模型,實現(xiàn)了屏蔽底層不同硬件,通信接口,數(shù)據(jù)格式,通訊協(xié)議等功能,為應用層提供了統(tǒng)一的農業(yè)數(shù)據(jù)展示和查詢功能,同時提高了農業(yè)數(shù)據(jù)傳輸?shù)男?降低了傳輸?shù)恼`碼率。中間件模型包括智能網(wǎng)關層,數(shù)據(jù)處理層和傳輸管理層。智能網(wǎng)關層包括通信及協(xié)議接口,統(tǒng)一協(xié)議轉換,接口驅動；數(shù)據(jù)處理層包括數(shù)據(jù)壓縮,傳輸差錯控制,數(shù)據(jù)類型處理,規(guī)則引擎；傳輸管理層包括通信服務接口,數(shù)據(jù)分類及發(fā)送,通信協(xié)議轉換,通信接口。 仿真驗證了數(shù)據(jù)處理層的數(shù)據(jù)壓縮和差錯控制技術,分別應用哈弗曼編碼和卷積碼理論,使傳輸?shù)恼`碼率下降到原來的20%,同時傳輸速率上升了7%。 定義了中間件的統(tǒng)一傳輸數(shù)據(jù)格式和傳輸協(xié)議格式。實際應用于中間件系統(tǒng)后表明可以正確采集接收農業(yè)多源異構采集設備的數(shù)據(jù)并實時顯示。同時引入傳輸效率評價函數(shù),為中間件實際應用效果提供評價標準。結果表明傳輸效果和評價函數(shù)結果基本一致,證明加入中間件的傳輸系統(tǒng)的傳輸效率比傳統(tǒng)農業(yè)傳輸方式有明顯提高。 實現(xiàn)了中間件的人機交互界面,包括實時數(shù)據(jù)顯示和以天為單位的農業(yè)數(shù)據(jù)曲線圖展示。采集到的數(shù)據(jù)和真實數(shù)據(jù)一致并且經(jīng)過曲線圖表的展示使數(shù)據(jù)更通俗易懂,能夠形象的展示如大氣溫度濕度,土壤溫度濕度以及二氧化碳含量等信息在一天中的變化情況。為應用層之后的數(shù)據(jù)挖掘,統(tǒng)計分析和預測提供了良好的基礎。 最后,對全文進行了總結和展望。
[Abstract]:Internet of things technology is closely related to agricultural informatization, which provides a solid foundation for realizing intensive agricultural production, intelligent management and control, prediction and analysis. This paper is oriented to the Internet of things, according to the characteristics of agricultural field data transmission, research and design of farmland data transmission middleware, has good application value of agricultural data transmission and wide application fields. Based on the middleware project of an agricultural company in Shanghai, this paper studies and establishes a middleware model for agricultural data transmission by collecting agricultural environment information and crop growth information data from an experimental farm in Chongming, Shanghai. The structure of each layer of the model is studied in detail. Finally, the system is implemented and the real-time multi-source heterogeneous data receiving and human-computer interface are demonstrated. This paper mainly implements the following aspects: This paper designs a middleware model of farmland data transmission oriented to Internet of things, realizes the functions of shielding different hardware, communication interface, data format, communication protocol and so on, and provides unified agricultural data display and query function for application layer. At the same time, the efficiency of agricultural data transmission is improved, and the bit error rate is reduced. The middleware model includes intelligent gateway layer, data processing layer and transport management layer. The intelligent gateway layer includes communication and protocol interface, uniform protocol conversion, interface driver; data processing layer includes data compression, transmission error control, data type processing, rule engine; transport management layer includes communication service interface. Data classification and transmission, communication protocol conversion, communication interface. The simulation verifies the data compression and error control techniques in the data processing layer. By applying the theory of Haverman coding and convolutional code, the BER of transmission is reduced to 20%, and the transmission rate is increased by 7%. The uniform data format and transport protocol format of middleware are defined. The practical application in the middleware system shows that the data of agricultural multi-source heterogeneous acquisition equipment can be correctly collected and displayed in real time. At the same time, the transmission efficiency evaluation function is introduced to provide the evaluation criteria for the practical application of middleware. The results show that the transmission effect is basically consistent with the evaluation function, and the transmission efficiency of the transmission system with middleware is obviously higher than that of the traditional agricultural transmission mode. The man-machine interface of middleware is realized, including real-time data display and agricultural data graph display. The collected data are consistent with the real data and are shown in curves and charts to make the data easier to understand and can vividly show the changes of information such as atmospheric temperature humidity soil temperature humidity and carbon dioxide content over the course of the day. It provides a good foundation for data mining, statistical analysis and prediction after application layer. Finally, the full text is summarized and prospected.
【學位授予單位】：東華大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN929.5;TP391.44

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