發(fā)布時(shí)間：2018-12-06 20:25

【摘要】：在由CPU板、圖形圖像板、網(wǎng)絡(luò)板、智能通信板等模塊組成的加固計(jì)算機(jī)中，對(duì)其各個(gè)模塊（設(shè)備）運(yùn)行狀態(tài)進(jìn)行檢測與測試在現(xiàn)代工業(yè)生產(chǎn)中具有重要的現(xiàn)實(shí)意義。隨著信息技術(shù)和嵌入式技術(shù)的迅猛發(fā)展，小型化、功能強(qiáng)大、功耗低且價(jià)格低廉、便于攜帶的手持式測試設(shè)備，在指控系統(tǒng)裝備現(xiàn)場級(jí)在線測試診斷、排障和設(shè)備維修中有著重要的意義。 本文以手持測試設(shè)備的設(shè)計(jì)與應(yīng)用為背景，在對(duì)國內(nèi)外便攜式測試設(shè)備發(fā)展現(xiàn)狀的調(diào)研和分析的基礎(chǔ)上，選擇低功耗、低成本和較高性能的ARM微處理器作為手持設(shè)備的處理器解決方案；選擇可移植性強(qiáng)、穩(wěn)定性好、內(nèi)核精悍、占資源少、支持多種硬件平臺(tái)的嵌入式Linux操作系統(tǒng)作為軟件平臺(tái)，提出了ARM+Linux的嵌入式系統(tǒng)平臺(tái)設(shè)計(jì)方案，利用異步串行通信接口和網(wǎng)絡(luò)通信接口實(shí)現(xiàn)對(duì)被測設(shè)備的診斷與檢測信息的獲取和處理。 文章主要從設(shè)備硬件平臺(tái)的設(shè)計(jì)和軟件平臺(tái)的搭建兩方面進(jìn)行了闡述。其中設(shè)備硬件平臺(tái)的設(shè)計(jì)是本文的重點(diǎn)，主要包括核心電路設(shè)計(jì)和輔助電路設(shè)計(jì)。文中較為詳細(xì)地描述了CPU電路設(shè)計(jì)、時(shí)鐘電路設(shè)計(jì)、復(fù)位電路設(shè)計(jì)、存儲(chǔ)器電路設(shè)計(jì)、以太網(wǎng)電路設(shè)計(jì)、異步串行通信接口電路設(shè)計(jì)、電源管理電路設(shè)計(jì)、USB電路設(shè)計(jì)、SD卡存儲(chǔ)模塊電路設(shè)計(jì)、LCD觸摸屏電路設(shè)計(jì)和音頻電路設(shè)計(jì)等，，并闡述了其電路實(shí)現(xiàn)的主要方法。軟件平臺(tái)主要包括基礎(chǔ)軟件平臺(tái)設(shè)計(jì)和應(yīng)用軟件平臺(tái)設(shè)計(jì)。本文從建立交叉編譯環(huán)境到支持圖形界面的嵌入式Linux的構(gòu)建給出了簡要的介紹，主要并詳細(xì)描述了測試信息的數(shù)據(jù)通信協(xié)議的設(shè)定以及異步串行通信程序和網(wǎng)絡(luò)通信程序的設(shè)計(jì)，完成初步的測試功能。 最后完成了手持測試設(shè)備的功能調(diào)試和應(yīng)用測試，并對(duì)結(jié)果進(jìn)行了分析。
[Abstract]:In a reinforced computer composed of CPU board, graphics and image board, network board, intelligent communication board and so on, it is of great practical significance to detect and test the running state of each module (equipment) in modern industrial production. With the rapid development of information technology and embedded technology, miniaturization, powerful function, low power consumption and low price, portable hand-held test equipment is easy to carry. Troubleshooting and equipment maintenance is of great significance. Based on the design and application of handheld test equipment, based on the investigation and analysis of the present situation of portable testing equipment at home and abroad, this paper chooses low power consumption. ARM microprocessor with low cost and high performance is used as the processor solution of handheld device. The embedded Linux operating system, which has strong portability, good stability, excellent kernel and less resources, is chosen as the software platform. The design scheme of the embedded system platform of ARM Linux is put forward. The asynchronous serial communication interface and the network communication interface are used to obtain and process the diagnosis and detection information of the equipment under test. This paper mainly expounds the design of hardware platform and the construction of software platform. The design of equipment hardware platform is the focus of this paper, including the core circuit design and auxiliary circuit design. In this paper, CPU circuit design, clock circuit design, reset circuit design, memory circuit design, Ethernet circuit design, asynchronous serial communication interface circuit design, power management circuit design, USB circuit design are described in detail. SD card storage module circuit design, LCD touch screen circuit design and audio circuit design, etc. The software platform mainly includes the basic software platform design and the application software platform design. This paper gives a brief introduction from the establishment of cross-compiling environment to the construction of embedded Linux which supports graphical interface. The data communication protocol of test information and the design of asynchronous serial communication program and network communication program are described in detail. Finally, the function debugging and application test of handheld test equipment are completed, and the results are analyzed.
【學(xué)位授予單位】：中國艦船研究院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TP368.1;TP274

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