發(fā)布時間：2018-10-13 18:13

【摘要】：隨著物聯(lián)網(wǎng)技術(shù)的出現(xiàn)和計算機技術(shù)、網(wǎng)絡(luò)通信技術(shù)、嵌入式技術(shù)的飛速發(fā)展，工業(yè)控制領(lǐng)域正發(fā)生著一場深刻的技術(shù)變革。功能簡單、獨立的本地數(shù)據(jù)監(jiān)控系統(tǒng)正在被集成度高、可自組網(wǎng)實現(xiàn)協(xié)同工作的遠程數(shù)據(jù)監(jiān)控系統(tǒng)所取代，系統(tǒng)整體的資源利用率和安全性能均有所提高。物聯(lián)網(wǎng)網(wǎng)關(guān)作為這種新型監(jiān)控系統(tǒng)的核心，實現(xiàn)了無線傳感網(wǎng)絡(luò)和傳統(tǒng)通信網(wǎng)絡(luò)的融合，完成不同類型網(wǎng)絡(luò)間的協(xié)議轉(zhuǎn)換，為遠程管理和監(jiān)控底層設(shè)備提供了平臺。本文主要論述了一種低功耗、支持多通信協(xié)議、可用于復雜工業(yè)環(huán)境下的物聯(lián)網(wǎng)網(wǎng)關(guān)的設(shè)計和實現(xiàn)技術(shù)，并針對網(wǎng)關(guān)應(yīng)用中遇到的路徑規(guī)劃問題設(shè)計了一個合理有效的解決方案。 本文首先綜述了物聯(lián)網(wǎng)、智能網(wǎng)關(guān)和無線傳感網(wǎng)技術(shù)的概念及國內(nèi)外的研究現(xiàn)狀，調(diào)研分析了現(xiàn)階段的物聯(lián)網(wǎng)網(wǎng)關(guān)產(chǎn)品，結(jié)合實際應(yīng)用的功能和性能需求，分析比較了多種通信方式、嵌入式核心微處理器和嵌入式操作系統(tǒng)的性能和特點，提出了基于嵌入式技術(shù)的物聯(lián)網(wǎng)網(wǎng)關(guān)系統(tǒng)整體設(shè)計方案。 然后，對系統(tǒng)的硬件和軟件設(shè)計展開論述。本智能網(wǎng)關(guān)系統(tǒng)分為網(wǎng)關(guān)平臺、采集終端和監(jiān)控中心三個子系統(tǒng)。設(shè)計中，以ARM微處理器Marvell PXA310和STM32L151為核心，搭建網(wǎng)關(guān)和采集終端的硬件平臺。在此基礎(chǔ)上進行系統(tǒng)軟件設(shè)計，網(wǎng)關(guān)平臺以嵌入式Linux操作系統(tǒng)為基礎(chǔ)，構(gòu)建設(shè)備驅(qū)動程序和上層應(yīng)用處理程序。設(shè)備驅(qū)動程序?qū)τ布O(shè)備的操作進行封裝，提供給應(yīng)用程序使用，，應(yīng)用程序基于多線程機制實現(xiàn)對系統(tǒng)所有任務(wù)的調(diào)度和管理。監(jiān)控中心提供嵌入式Web、Java Web和VC客戶端三種數(shù)據(jù)監(jiān)控管理平臺。 之后，對網(wǎng)關(guān)系統(tǒng)應(yīng)用中出現(xiàn)的路徑規(guī)劃問題進行了分析，結(jié)合最短路徑算法仿真結(jié)果和網(wǎng)關(guān)網(wǎng)絡(luò)實際特點，提出了基于兩種網(wǎng)絡(luò)參數(shù)和Bellman-Ford、Dijkstra、Floyd三種算法仿真數(shù)據(jù)擬合的路徑優(yōu)化方案，并在網(wǎng)關(guān)系統(tǒng)中實現(xiàn)上述設(shè)計方案，進行了方案驗證。 最后，詳細描述了網(wǎng)關(guān)系統(tǒng)的整體調(diào)試過程和運行結(jié)果，從而充分驗證了基于物聯(lián)網(wǎng)的智能網(wǎng)關(guān)系統(tǒng)設(shè)計方案和實現(xiàn)方法的可行性和正確性。 文中使用了大量的圖片和表格對物聯(lián)網(wǎng)網(wǎng)關(guān)系統(tǒng)的設(shè)計與實現(xiàn)過程進行說明，使得系統(tǒng)的整體架構(gòu)和軟硬件結(jié)構(gòu)更加清晰。
[Abstract]:With the emergence of Internet of things and the rapid development of computer technology, network communication technology and embedded technology, a profound technological change is taking place in the field of industrial control. The independent local data monitoring system with simple function is being replaced by the remote data monitoring system which is highly integrated and can work collaboratively. The overall resource utilization and security performance of the system are improved. As the core of this new monitoring system, the Internet of things gateway realizes the fusion of wireless sensor network and traditional communication network, completes the protocol conversion between different types of networks, and provides a platform for remote management and monitoring of the underlying equipment. This paper mainly discusses a low power, multi-communication protocol, which can be used in the design and implementation of Internet of things gateway in complex industrial environment. A reasonable and effective solution to the path planning problem in gateway application is designed. In this paper, the concepts of Internet of things, Intelligent Gateway and Wireless Sensor Network (WSNs) are summarized. This paper analyzes and compares the performance and characteristics of various communication modes, embedded core microprocessor and embedded operating system, and puts forward the overall design scheme of Internet of things gateway system based on embedded technology. Then, the hardware and software design of the system are discussed. The intelligent gateway system is divided into three subsystems: gateway platform, acquisition terminal and monitoring center. In the design, the hardware platform of gateway and acquisition terminal is built with ARM microprocessor Marvell PXA310 and STM32L151 as the core. The gateway platform is based on the embedded Linux operating system to construct the device driver and the upper application processing program. The device driver encapsulates the operation of the hardware device and provides it to the application program. The application program realizes the scheduling and management of all tasks of the system based on the multithread mechanism. Monitoring center provides embedded Web,Java Web and VC client data monitoring and management platform. Then, the path planning problem in the application of gateway system is analyzed, which combines the simulation results of shortest path algorithm and the actual characteristics of gateway network. A path optimization scheme based on two kinds of network parameters and three algorithms of Bellman-Ford,Dijkstra,Floyd simulation data fitting is proposed, and the above design scheme is implemented in the gateway system, and the scheme is verified. Finally, the whole debugging process and running results of the gateway system are described in detail, which fully verifies the feasibility and correctness of the intelligent gateway system design scheme and implementation method based on the Internet of things. In this paper, a large number of pictures and tables are used to explain the design and implementation process of the Internet of things gateway system, which makes the overall architecture and software and hardware structure of the system more clear.
【學位授予單位】：北京工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP391.44;TN929.5

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