發(fā)布時間：2018-06-29 17:19

  本文選題：數(shù)字示波器 + OMAP-L138��； 參考：《電子科技大學(xué)》2014年碩士論文

【摘要】：電子信息技術(shù)的發(fā)展,大力推動了測量領(lǐng)域內(nèi)儀器儀表類市場的發(fā)展。作為電子測量儀器中最為普遍的一種儀器:示波器,更是發(fā)展迅速。數(shù)字存儲示波器作為近些年電子技術(shù)發(fā)展的產(chǎn)物,以其功能豐富、高性能指標(biāo)、優(yōu)秀人機(jī)交互等特點,在測量領(lǐng)域被測試人員廣泛使用。對于中低端數(shù)字示波器,普遍以FPGA+DSP為核心架構(gòu),本課題設(shè)計在此架構(gòu)的基礎(chǔ)上進(jìn)行更進(jìn)一步的優(yōu)化升級,采用FPGA+DSP+ARM結(jié)構(gòu)。在硬件上采用集成雙核處理芯片:OMAP-L138,并且為了更好的發(fā)揮兩種芯片的性能,在軟件上采用Linux+DSP/BIOS雙系統(tǒng)設(shè)計。此種設(shè)計較傳統(tǒng)架構(gòu)有多種優(yōu)勢:首先釋放了DSP,使其可以發(fā)揮本身優(yōu)點更加專注于數(shù)據(jù)處理;其次引入ARM利用其專長實現(xiàn)控制邏輯;最后在雙核的基礎(chǔ)上運(yùn)行雙系統(tǒng),提升外設(shè)管理能力和多任務(wù)調(diào)度響應(yīng)能力。本課題以實際企業(yè)的產(chǎn)品研發(fā)為基礎(chǔ),通過多種創(chuàng)新性設(shè)計,最大程度的提升了該示波器產(chǎn)品在市場中的競爭力。本文基于OMAP硬件平臺,合理規(guī)劃雙核任務(wù)分工,通過對示波器系統(tǒng)的整體分析,分別完成了以下幾點研究任務(wù):1.搭建軟件開發(fā)平臺,為后續(xù)兩端芯片應(yīng)用程序開發(fā)提供良好的環(huán)境;2.通過了解芯片啟動原理,給出實際項目中采用的啟動模式實現(xiàn),同時針對項目的特殊需求,創(chuàng)新性的實現(xiàn)了系統(tǒng)開機(jī)畫面的實現(xiàn);3.介紹DSP/BIOS操作系統(tǒng)的工作原理與流程,并給出了項目中DSP/BIOS應(yīng)用程序的結(jié)構(gòu)設(shè)計,然后針對課題中大數(shù)據(jù)量通信需求提出了兩種通信接口的設(shè)計與使用,最后提出了DSP端應(yīng)用程序的優(yōu)化方法并驗證;4.完成了Linux端根文件系統(tǒng)的制作,并且實現(xiàn)了雙核間的通信設(shè)計,并對于雙核調(diào)試?yán)щy的情況提出新的解決方案并加以實現(xiàn)。本項目創(chuàng)新性的采用新結(jié)構(gòu)設(shè)計,經(jīng)過實踐開發(fā)驗證,較以往結(jié)構(gòu)具體較大的性能提升。無論在數(shù)據(jù)處理能力上,還是在人機(jī)交互上,以及支持外設(shè)模塊數(shù)量方面,均有很大的提高,本課題對于示波器的發(fā)展和研究具有重要意義。
[Abstract]:The development of electronic information technology has greatly promoted the development of instrumentation market in the field of measurement. As the most common instrument in electronic measuring instruments, oscilloscope is developing rapidly. Digital storage oscilloscope (DSO), as a product of electronic technology development in recent years, is widely used by testers in the field of measurement because of its rich function, high performance index, excellent man-machine interaction and so on. For the middle and low end digital oscilloscope, FPGA DSP is generally used as the core structure. Based on this architecture, this paper designs further optimization and upgrade, and adopts FPGA DSP arm structure. The integrated dual-core processing chip: OMAP-L138is adopted in hardware, and in order to make better use of the performance of the two chips, Linux DSP / BIOS dual-system design is used in the software. This design has many advantages over the traditional architecture: first, it releases DSPs so that it can take advantage of its own advantages to focus more on data processing; secondly, arm is introduced to implement control logic using its expertise; and finally, it runs dual systems on the basis of dual-core. Improve peripheral management and multitask scheduling and response capabilities. Based on the product research and development of the actual enterprise, this paper improves the competitiveness of the oscilloscope product in the market to the greatest extent through a variety of innovative designs. Based on the OMAP hardware platform, this paper reasonably plans the division of dual core tasks, through the overall analysis of the oscilloscope system, completed the following research tasks: 1. Build a software development platform to provide a good environment for the subsequent development of chip applications. Through understanding the principle of chip startup, the realization of startup mode used in the actual project is given. At the same time, according to the special needs of the project, the realization of the system boot screen is innovatively realized. The working principle and flow chart of DSP / BIOS operating system are introduced, and the structure design of DSP / BIOS application program in the project is given. Then, two communication interfaces are designed and used to meet the communication requirements of large amount of data in the project. Finally, the optimization method of DSP application program is proposed and verified. The design of Linux end root file system is completed, and the communication design between two cores is realized, and a new solution is put forward for the difficult debugging of double core. This project adopts the new structure design innovatively, through the practice development verification, compared with the previous structure concrete bigger performance enhancement. In terms of data processing ability, human-computer interaction and the number of supporting peripheral modules, this topic is of great significance for the development and research of oscilloscopes.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM935.3

【共引文獻(xiàn)】

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1 楊春順;;基于RapidIO總線通信系統(tǒng)交換單元的設(shè)計與實現(xiàn)[J];計算機(jī)與數(shù)字工程;2014年06期

2 鄧冉;高俊;屈曉旭;;相控陣短波發(fā)信系統(tǒng)相位校正方案設(shè)計[J];通信技術(shù);2015年10期

3 吳瀟;常成;覃文杰;程久軍;;基于RFID和數(shù)字水印技術(shù)的標(biāo)簽防偽驗證方法[J];信息網(wǎng)絡(luò)安全;2015年08期

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本文編號：2082824