【摘要】：智慧農(nóng)業(yè)能夠高效利用農(nóng)業(yè)資源、大幅度降低農(nóng)業(yè)生產(chǎn)成本和能耗,是一種高效、低耗、優(yōu)質(zhì)的新型農(nóng)業(yè)發(fā)展模式�，F(xiàn)有的智慧農(nóng)業(yè)軟件系統(tǒng)存在系統(tǒng)功能單一,數(shù)據(jù)資源分散、共享率低等問題。基于傳感器技術(shù)、物聯(lián)網(wǎng)技術(shù)、計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)構(gòu)建的智慧農(nóng)業(yè)服務(wù)平臺(tái)實(shí)現(xiàn)了農(nóng)業(yè)數(shù)據(jù)采集和設(shè)備控制,并依靠網(wǎng)絡(luò)架構(gòu)實(shí)現(xiàn)高效服務(wù)部署和數(shù)據(jù)共享,同時(shí)避免了軟件重復(fù)開發(fā)造成的成本浪費(fèi),對(duì)推進(jìn)農(nóng)業(yè)信息化發(fā)展有重要意義。論文主要做了以下幾方面的工作：1.提出了一種通用性的服務(wù)器平臺(tái)。針對(duì)智慧農(nóng)業(yè)應(yīng)用系統(tǒng)缺乏通用服務(wù)器架構(gòu),軟件重復(fù)開發(fā)和數(shù)據(jù)資源浪費(fèi)的問題,本文設(shè)計(jì)了基于LNMP的通用服務(wù)器平臺(tái)架構(gòu),降低界面呈現(xiàn)、服務(wù)流程控制及數(shù)據(jù)處理的耦合度,利用面向?qū)ο笏枷牒?jiǎn)化數(shù)據(jù)庫設(shè)計(jì)的復(fù)雜度,提高服務(wù)器開發(fā)效率,實(shí)現(xiàn)各類應(yīng)用服務(wù)的快速部署。2.提出了一種提高通用服務(wù)器平臺(tái)數(shù)據(jù)傳輸安全性的優(yōu)化方案。針對(duì)網(wǎng)絡(luò)數(shù)據(jù)傳輸和服務(wù)器系統(tǒng)的安全性問題,本文提出的系統(tǒng)實(shí)現(xiàn)方案利用RS485總線對(duì)服務(wù)器和采集控制系統(tǒng)進(jìn)行隔離,使二者的安全性解耦；并利用SSL協(xié)議服務(wù)器與采集控制系統(tǒng)間的信息安全加密傳輸,防止攻擊者對(duì)數(shù)據(jù)竊取篡改。3.提出了一種提高通用服務(wù)器平臺(tái)并發(fā)處理能力的優(yōu)化方案。針對(duì)服務(wù)器平臺(tái)業(yè)務(wù)處理效率和并發(fā)處理能力的瓶頸問題,本文對(duì)SSL安全套接字進(jìn)行了非阻塞I/O復(fù)用擴(kuò)展,并提出一種基于多維隊(duì)列的任務(wù)處理策略,實(shí)現(xiàn)了子任務(wù)并行處理,減少任務(wù)處理線程數(shù),提高服務(wù)器的并發(fā)性和響應(yīng)速度。4.完成業(yè)務(wù)部署,并進(jìn)行方案驗(yàn)證。在通用服務(wù)器平臺(tái)基礎(chǔ)上,實(shí)現(xiàn)了農(nóng)田灌溉遠(yuǎn)程監(jiān)控服務(wù)和作物生長(zhǎng)環(huán)境監(jiān)測(cè)服務(wù)的快速部署,并通過測(cè)試驗(yàn)證了本文提出的服務(wù)器架構(gòu)、安全性優(yōu)化方案和并發(fā)性優(yōu)化策略的正確性、有效性。研究結(jié)果表明,本文提出的基于LNMP的通用服務(wù)器架構(gòu)具有較高的并發(fā)處理能力,且易于程序開發(fā)和服務(wù)部署；基于485總線隔離和SSL加密通信的系統(tǒng)實(shí)現(xiàn)方案有效保障了服務(wù)器安全；對(duì)SSL安全套接字的非阻塞I/0復(fù)用擴(kuò)展和基于多維隊(duì)列的并行任務(wù)發(fā)布策略,有效提高了服務(wù)器并發(fā)能力。
[Abstract]:Intelligent agriculture can utilize agricultural resources efficiently and reduce agricultural production cost and energy consumption by a large margin. It is a new agricultural development mode with high efficiency, low consumption and high quality. The existing intelligent agricultural software system has some problems, such as single system function, scattered data resources and low sharing rate. The intelligent agricultural service platform based on sensor technology, Internet of things technology and computer network technology realizes agricultural data acquisition and equipment control, and relies on network architecture to realize efficient service deployment and data sharing. At the same time, the cost waste caused by repeated development of software is avoided, and it is of great significance to promote the development of agricultural informatization. The main work of this paper is as follows: 1. A universal server platform is proposed. In view of the lack of common server architecture, repeated development of software and waste of data resources in intelligent agricultural application systems, a general server platform architecture based on LNMP is designed in this paper to reduce interface presentation. The coupling degree of service flow control and data processing, using object-oriented thought to simplify the complexity of database design, improve the efficiency of server development, and realize the rapid deployment of all kinds of application services. 2. This paper presents an optimized scheme to improve the security of data transmission in general server platform. Aiming at the problem of network data transmission and the security of server system, the system implementation scheme in this paper uses RS485 bus to isolate the server and the acquisition control system, so that the security of the two systems can be decoupled. And the SSL protocol server and the acquisition control system between the information security encryption transmission, to prevent attackers from stealing and tampering with data. 3. 3. This paper presents an optimization scheme to improve the concurrency processing capability of the common server platform. Aiming at the bottleneck of service processing efficiency and concurrent processing ability of server platform, this paper extends the SSL secure socket with non-blocking I / O multiplexing, and proposes a task processing strategy based on multidimensional queue. The parallel processing of subtasks is realized, the number of task processing threads is reduced, and the concurrency and response speed of the server are improved. 4. 4. Complete business deployment and program validation. On the basis of common server platform, the rapid deployment of remote monitoring service for farmland irrigation and monitoring service for crop growth environment is realized, and the server architecture proposed in this paper is verified by testing. The correctness and effectiveness of security optimization scheme and concurrency optimization strategy. The research results show that the proposed universal server architecture based on LNMP has high concurrency processing capability and is easy to program development and service deployment. The system implementation scheme based on 485 bus isolation and SSL encryption communication effectively ensures the security of the server. Non-blocking I / O multiplexing extension for SSL secure sockets and parallel task publishing strategy based on multidimensional queue can effectively improve server concurrency capability.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S126;TP311.52

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