發(fā)布時(shí)間：2018-01-12 21:12

  本文關(guān)鍵詞：基于Linux操作系統(tǒng)的嵌入式微處理器節(jié)能研究　出處：《安徽大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： AT91SAM9G20微處理器 節(jié)能 Linux 功耗控制模塊 驅(qū)動(dòng)程序

【摘要】：隨著計(jì)算機(jī)技術(shù)、通信技術(shù)的迅猛發(fā)展以及3C(計(jì)算機(jī)、通信、消費(fèi)電子)的融合、三網(wǎng)(廣播電視網(wǎng)、電信網(wǎng)、互聯(lián)網(wǎng))融合技術(shù)的蓬勃發(fā)展,嵌入式系統(tǒng)和ARM處理器已被廣泛應(yīng)用到各個(gè)領(lǐng)域。其中AT91SAM9G20微處理器廣泛用于銷售點(diǎn)終端、建筑自動(dòng)化、安全攝像頭以及條形碼讀出器等場(chǎng)合,但是,這些應(yīng)用都在一定程度上受到功率的限制。因此,如何進(jìn)一步降低微處理器的功率消耗已成為一個(gè)關(guān)鍵問題。本文針對(duì)這一問題,提出了基于Linux操作系統(tǒng)的節(jié)能研究方案,該方案利用動(dòng)態(tài)電源管理技術(shù)以及根據(jù)判斷進(jìn)程隊(duì)列中的進(jìn)程數(shù)量和當(dāng)前CPU占有率來(lái)改變微處理器主頻,同時(shí)設(shè)計(jì)功耗控制模塊和編寫功耗控制驅(qū)動(dòng)程序,完成了對(duì)功耗的控制,最后通過測(cè)試程序證明此方案有效可行。在倡導(dǎo)“節(jié)能減排,低碳生活”的大環(huán)境下,人們有必要從各個(gè)方面來(lái)考慮降低功率消耗的問題,因此基于Linux系統(tǒng)的微處理器節(jié)能研究有著非常重要的意義。 論文作者完成的工作和主要的研究?jī)?nèi)容如下： 1.熟悉YL-9G20開發(fā)板,并在此基礎(chǔ)上深入學(xué)習(xí)了Linux操作系統(tǒng)的裁剪和移植以及從u-boot啟動(dòng)到根文件系統(tǒng)成功掛載的整個(gè)過程。 2.深入研讀了AT91SAM9G20微處理器的datasheet,充分了解了其中PMC(電源管理控制器)的工作原理。 3.根據(jù)提出的節(jié)能方案,設(shè)計(jì)功耗控制模塊、編寫功耗控制驅(qū)動(dòng)程序,熟悉了驅(qū)動(dòng)開發(fā)的整個(gè)流程以及VI編輯器和GDB調(diào)試器的使用,最后通過測(cè)試程序證明了改造后的內(nèi)核可以正常運(yùn)行以及功耗控制模塊有效可行。 4.論文完成了整個(gè)節(jié)能方案的研究與功耗控制模塊的設(shè)計(jì),它們都是行之有效的,通過試驗(yàn)表明,在電源供電的同等條件下,文中的方案可以相當(dāng)大的降低功率消耗。最后總結(jié)了在研究過程中出現(xiàn)的困難和問題,并進(jìn)行總結(jié)展望,對(duì)于在研究中得到的經(jīng)驗(yàn)教訓(xùn)也做了很好的總結(jié)。
[Abstract]:With the rapid development of computer technology, communication technology and the integration of 3C (computer, communication, consumer electronics), three networks (radio and television network, telecommunications network, Internet) integration technology is booming. Embedded systems and ARM processors have been widely used in various fields, among which AT91SAM9G20 microprocessors are widely used in point-of-sale terminals, architectural automation. Security camera and bar code readout, but these applications are limited by power to some extent. How to further reduce the power consumption of microprocessor has become a key problem. In this paper, a research scheme of energy saving based on Linux operating system is proposed. This scheme uses dynamic power management technology and determines the number of processes in the process queue and the current CPU share to change the main frequency of the microprocessor. At the same time, the power control module and power control driver are designed. The control of power consumption is completed, and the test program proves that this scheme is effective and feasible. In the environment of "energy saving and emission reduction, low carbon living". It is necessary to consider the problem of reducing power consumption from various aspects, so the research of microprocessor energy saving based on Linux system is of great significance. The author's work and main research contents are as follows: 1. Familiar with the YL-9G20 development board, and on this basis, we deeply study the cutting and porting of the Linux operating system and the whole process from u-boot boot to the successful mount of the root file system. 2. The data set of AT91SAM9G20 microprocessor is deeply studied, and the working principle of PMC (Power Management Controller) is fully understood. 3. According to the proposed energy saving scheme, design power control module, write power control driver, familiar with the driver development process, VI editor and the use of GDB debugger. Finally, the test program proves that the modified kernel can run normally and the power control module is effective and feasible. 4. The research of the whole energy saving scheme and the design of the power consumption control module are completed in the thesis. They are all effective. The experiment shows that under the same condition of power supply. The scheme in this paper can greatly reduce the power consumption. Finally, the difficulties and problems in the research process are summarized, and the prospects are summarized, and the experience and lessons learned in the research are also well summarized.
【學(xué)位授予單位】：安徽大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TP316.81;TP368.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉永林;梁瑩;王詩(shī)琴;師惠萍;;基于Linux的嵌入式交叉編譯環(huán)境的建立及實(shí)現(xiàn)[J];電腦開發(fā)與應(yīng)用;2011年07期

2 王巖;;淺析進(jìn)程概念[J];電腦知識(shí)與技術(shù);2010年21期

3 黃武陵,宋莉,何小慶,江文瑞;嵌入式Linux的動(dòng)態(tài)電源管理技術(shù)[J];單片機(jī)與嵌入式系統(tǒng)應(yīng)用;2005年09期

4 張磊;溫陽(yáng)東;;基于ARM和Linux交叉開發(fā)環(huán)境的搭建[J];儀器儀表用戶;2009年03期

5 宋穎慧,遲關(guān)心,趙萬(wàn)生,侯爽;增強(qiáng)Linux內(nèi)核實(shí)時(shí)性能的研究與實(shí)現(xiàn)[J];哈爾濱工業(yè)大學(xué)學(xué)報(bào);2005年06期

6 張同光;李秀芹;朱家義;楊延玉;;Linux 2.6內(nèi)核分析——對(duì)進(jìn)程調(diào)度機(jī)制的分析[J];長(zhǎng)春工業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版);2006年04期

7 萬(wàn)思海;邵X;劉宗田;;基于Linux動(dòng)態(tài)頻率調(diào)整的DPM方案[J];計(jì)算機(jī)工程;2011年10期

8 邵長(zhǎng)磊;;Linux操作系統(tǒng)簡(jiǎn)介[J];農(nóng)業(yè)圖書情報(bào)學(xué)刊;2008年12期

9 王祚棟,魏少軍;SOC時(shí)代低功耗設(shè)計(jì)的研究與進(jìn)展[J];微電子學(xué);2005年02期

10 吳玉香;周建香;郭建勛;;U-Boot在s3c2410上的移植及功能擴(kuò)展[J];計(jì)算機(jī)工程與設(shè)計(jì);2010年04期

相關(guān)碩士學(xué)位論文 前1條

1 馮峰;嵌入式Linux操作系統(tǒng)的實(shí)現(xiàn)及其應(yīng)用研究[D];西南交通大學(xué);2005年

，

本文編號(hào)：1416014