發(fā)布時(shí)間：2019-02-16 20:05

【摘要】：21世紀(jì)以來,伴隨通信技術(shù)和計(jì)算機(jī)技術(shù)的快速融合,信息的傳遞量和速度也得到了大幅度提升,網(wǎng)關(guān)作為信息傳遞的門戶與管理者,在信息的傳遞過程中起到了舉足輕重的作用。目前,工業(yè)控制領(lǐng)域的網(wǎng)關(guān)設(shè)備,多數(shù)通信方式較為單一,僅能夠?qū)崿F(xiàn)同一種網(wǎng)絡(luò)內(nèi)測控終端的通信,無法同時(shí)滿足異構(gòu)網(wǎng)絡(luò)快速接入互聯(lián)網(wǎng)或同一網(wǎng)絡(luò)中不同通信方式(包括傳輸協(xié)議、接口方式和數(shù)據(jù)類型的差異)的終端設(shè)備的接入需求。盡管測控終端設(shè)備的智能化、信息化已經(jīng)相當(dāng)普及,但不同廠家、不同型號、不同類型的測控終端設(shè)備還很難統(tǒng)一通信方式；此外,一個(gè)大型測控網(wǎng)絡(luò)通常包含多個(gè)異構(gòu)局域網(wǎng)絡(luò),這些問題給測控網(wǎng)絡(luò)的組網(wǎng)和集中控制與管理帶來很大的難題。 本文針對上述問題,在分析智能網(wǎng)關(guān)相關(guān)技術(shù)的研究背景和發(fā)展現(xiàn)狀基礎(chǔ)上,對現(xiàn)有的網(wǎng)關(guān)系統(tǒng)和測控系統(tǒng)的組網(wǎng)技術(shù)進(jìn)行分析和比較,并結(jié)合可再生能源應(yīng)用工程測控系統(tǒng)的實(shí)際需求,提出了基于嵌入式系統(tǒng)和多種通信技術(shù)的智能網(wǎng)關(guān)設(shè)計(jì)方案；設(shè)計(jì)了智能網(wǎng)關(guān)的硬件系統(tǒng)和軟件系統(tǒng),構(gòu)建了測試平臺并完成對智能網(wǎng)關(guān)的測試；測試結(jié)果表明了本文智能網(wǎng)關(guān)達(dá)到預(yù)期的設(shè)計(jì)目標(biāo),用戶通過Web瀏覽器訪問測控中心服務(wù)器,即可對大型測控網(wǎng)絡(luò)內(nèi)的任意現(xiàn)場設(shè)備進(jìn)行查詢和控制；也可以通過移動終端對任一個(gè)智能網(wǎng)關(guān)進(jìn)行現(xiàn)場操作。 在上述智能網(wǎng)關(guān)的設(shè)計(jì)和實(shí)現(xiàn)過程中,本文的主要工作如下： (1)根據(jù)智能網(wǎng)關(guān)功能和性能需求,對硬件系統(tǒng)核心器件進(jìn)行合理的選型,采用32位RISC微處理器S3C2440A作為系統(tǒng)控制核心,研究了多種通信方式及其接口技術(shù),采用核心板+擴(kuò)展通信模塊的設(shè)計(jì)方法,實(shí)現(xiàn)了智能網(wǎng)關(guān)的硬件電路系統(tǒng)。 (2)根據(jù)智能網(wǎng)關(guān)功能需求和硬件系統(tǒng),選擇合適的嵌入式操作系統(tǒng),研究包括數(shù)據(jù)傳輸協(xié)議轉(zhuǎn)換在內(nèi)的各種通信方式的控制、嵌入式數(shù)據(jù)庫設(shè)計(jì)、分布式數(shù)據(jù)庫的數(shù)據(jù)同步、嵌入式系統(tǒng)長期連續(xù)運(yùn)行的可靠性、提高移動終端數(shù)據(jù)處理速度等技術(shù)和方法,設(shè)計(jì)并實(shí)現(xiàn)智能網(wǎng)關(guān)的嵌入式軟件系統(tǒng)。 (3)構(gòu)建了基于實(shí)際的可再生能源應(yīng)用工程的測試平臺,提出測試要求和方法、搭建相應(yīng)的測試環(huán)境,對本文實(shí)現(xiàn)的智能網(wǎng)關(guān)的功能和性能進(jìn)行測試,并對主要測試結(jié)果進(jìn)行分析。 (4)對本文的工作進(jìn)行總結(jié),并提出進(jìn)一步深入研發(fā)的展望。
[Abstract]:Since the 21st century, with the rapid integration of communication technology and computer technology, the amount and speed of information transmission has been greatly improved. Gateway is the gateway and manager of information transmission. It plays an important role in the process of information transmission. At present, most of the gateway devices in the field of industrial control have a single communication mode, and can only realize the communication of the measurement and control terminal in the same network. It can not meet the requirement of fast access to the Internet in heterogeneous networks or different communication modes in the same network (including the difference of transmission protocol, interface mode and data type). Although the intelligence and information technology of the terminal equipment has been popularized, it is difficult for different manufacturers, different models and different types of terminal equipment to unify the communication mode. In addition, a large measurement and control network usually contains multiple heterogeneous local area networks. These problems bring great difficulties to the networking and centralized control and management of measurement and control networks. Aiming at the above problems, this paper analyzes and compares the networking technology of the existing gateway system and the measurement and control system on the basis of analyzing the research background and development status of the intelligent gateway related technology. The intelligent gateway design scheme based on embedded system and various communication technologies is put forward according to the actual requirements of the renewable energy application engineering measurement and control system. The hardware system and software system of the intelligent gateway are designed, the test platform is constructed and the intelligent gateway is tested. The test results show that the intelligent gateway achieves the desired design goal. Users can query and control any field equipment in the large measurement and control network by visiting the measurement and control center server through the Web browser. Also can carry on the field operation to any intelligent gateway through the mobile terminal. In the design and implementation of the intelligent gateway, the main work of this paper is as follows: (1) according to the function and performance requirements of the intelligent gateway, the core components of the hardware system are selected reasonably. The 32-bit RISC microprocessor S3C2440A is used as the control core of the system. Various communication modes and their interface technologies are studied. The design method of extending the communication module with the core board is adopted to realize the hardware circuit system of the intelligent gateway. (2) according to the function requirement of intelligent gateway and hardware system, select suitable embedded operating system, study the control of various communication modes, including data transfer protocol conversion, design of embedded database, The embedded software system of intelligent gateway is designed and implemented by the technologies and methods of data synchronization of distributed database, reliability of embedded system running continuously for a long time, and improving data processing speed of mobile terminal. (3) the test platform based on the actual renewable energy application engineering is constructed, the test requirements and methods are put forward, the corresponding test environment is built, and the function and performance of the intelligent gateway realized in this paper are tested. The main test results are analyzed. (4) summarize the work of this paper, and put forward the prospect of further research and development.
【學(xué)位授予單位】：福建師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.05

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李桂香;常峗杰;;嵌入式Linux文件系統(tǒng)研究與應(yīng)用[J];電腦開發(fā)與應(yīng)用;2010年05期

2 彭婭利;吉翔;;嵌入式Linux中Cramfs根文件系統(tǒng)的移植[J];電腦開發(fā)與應(yīng)用;2011年01期

3 李修忠;;Berkeley DB關(guān)鍵技術(shù)研究[J];電腦知識與技術(shù);2009年19期

4 黃天戍,羅t，

本文編號：2424788