本文選題：測量儀表　切入點：Toppers/ASP　出處：《中國地質(zhì)大學(xué)（北京）》2013年碩士論文

【摘要】：隨著現(xiàn)在測量儀器儀表的智能化應(yīng)用越來越普及，其對系統(tǒng)的實時性和穩(wěn)定性的要求也日趨增加。而且，目前該領(lǐng)域的發(fā)展速度也越來越快，對測量儀表的更新和擴展能力的要求也比較高。這就要求系統(tǒng)的更新和擴展能力要能得到保障。所以，本文主要針對上述兩方面的要求，進行了基于ARM的實時文件存儲管理系統(tǒng)的設(shè)計。 本系統(tǒng)最終實現(xiàn)的功能是：在保證實時性的前提下采集數(shù)據(jù)并在VFD顯示屏上進行顯示；能隨時在用戶的控制下保存轉(zhuǎn)換后的數(shù)據(jù)（能在PC端展示分析的數(shù)據(jù)）；通過本地訪問可以隨時讀取和管理保存的數(shù)據(jù)內(nèi)容；系統(tǒng)的固件升級。其中，顯示和鍵盤控制充分考慮了實時性的要求，都進行了中斷模式處理。 本系統(tǒng)需要完成的應(yīng)用層軟件模塊：在嵌入式實時操作系統(tǒng)內(nèi)核Toppers/ASP上完成4個主要功能任務(wù)：處理數(shù)據(jù)采集、實時數(shù)據(jù)顯示、鍵盤人機交互、文件存儲管理。本系統(tǒng)需要完成的驅(qū)動層軟件模塊：基于LPC2478（ARM7）控制器的鍵盤驅(qū)動；FatFS移植在SD卡上的接口驅(qū)動。Bootloader的設(shè)計：每個嵌入式系統(tǒng)開發(fā)都有調(diào)試和擴展功能的需要，所以該功能也進行了詳細的設(shè)計。在bootloader的基礎(chǔ)之上加入了系統(tǒng)的固件更新升級模塊：可以遠程升級固件（Xmodem文件傳輸協(xié)議），也可以本地SD卡升級固件（FatFS文件系統(tǒng)的支持）。 系統(tǒng)設(shè)計的最終測試結(jié)果：主要測試了系統(tǒng)長期運行的穩(wěn)定性和數(shù)據(jù)采集保存的實時性。本系統(tǒng)的設(shè)計完全可以滿足市面上現(xiàn)存的臺式數(shù)字萬用表的性能要求，而且在文件存儲管理方面已經(jīng)超越了部分高性能的數(shù)字萬用表。 系統(tǒng)設(shè)計總結(jié)：設(shè)計前期完成的性能很低下，經(jīng)過軟件結(jié)構(gòu)優(yōu)化，最終的結(jié)果比設(shè)計初期有了明顯的性能提升，主要體現(xiàn)在：文件遍歷和數(shù)據(jù)類型轉(zhuǎn)換兩方面。該部分的性能提升幅度達到60%以上。系統(tǒng)的可擴展性非常靈活，根據(jù)需要可以擴展為遠程網(wǎng)口通信（目前為串口通信）、高速USB通信（目前為SD卡通信）、現(xiàn)場大數(shù)據(jù)處理分析等。該部分的擴展還沒有完成，，以后需要進一步完善。
[Abstract]:With the increasing popularity of the intelligent application of measuring instruments and instruments, the demand for the real-time and stability of the system is increasing day by day. Moreover, the speed of development in this field is also getting faster and faster. The requirement of updating and expanding ability of measuring instruments is also high. This requires that the updating and expanding ability of the system can be guaranteed. Therefore, this paper mainly aims at the above two requirements. A real-time file storage management system based on ARM is designed. The final function of this system is to collect data and display it on VFD display screen on the premise of real-time; Can save converted data at any time under the control of the user (can display the analyzed data on the PC side; can read and manage the saved data content at any time through local access; firmware upgrade of the system. Display and keyboard control fully take into account the requirements of real-time, both the interrupt mode processing. This system needs to complete the application layer software module: in the embedded real-time operating system kernel Toppers/ASP complete four main function tasks: processing data collection, real-time data display, keyboard man-machine interaction, File storage management. This system needs to complete the driver layer software module: the keyboard driver FatFS based on LPC2478 ARM7) controller transplanted on SD card interface driver. Boot Loader design: every embedded system development has the need of debugging and extending function. So this function is also designed in detail. The firmware update and upgrade module of the system is added on the basis of bootloader: the firmware X modem file transfer protocol can be remotely upgraded, or the local SD card can upgrade the firmware to support FatFS file system. The final test results of the system design: the stability of the system running for a long time and the real-time data collection and storage are mainly tested. The design of the system can completely meet the performance requirements of the existing desktop digital multimeter on the market. And in the file storage management aspect has surpassed the partial high-performance digital multimeter. Summary of the system design: the performance of the early stage of the design is very low. After the software structure optimization, the final result has obviously improved the performance compared with the early stage of the design. Mainly reflected in: file traversal and data type conversion. The performance of this part of the increase to more than 60%. The system is very flexible scalability, It can be extended to remote network port communication (serial port communication at present, high speed USB communication (SD card communication at present, big data processing and analysis on the spot, etc.). The extension of this part has not been completed and needs to be further improved in the future.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)（北京）
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP333;TP311.52

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