本文關(guān)鍵詞：大幅面光電掃描儀并行數(shù)據(jù)采集與拼接平臺(tái)的設(shè)計(jì)與實(shí)現(xiàn)　出處：《電子科技大學(xué)》2013年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： CCD圖像采集 FPGA Avalon總線技術(shù) SOPC 硬件平臺(tái)實(shí)時(shí)數(shù)據(jù)拼接

【摘要】：大幅面光電掃描儀廣泛的運(yùn)用于軍事、工業(yè)、科教與文化等領(lǐng)域中的圖文掃描、字符識(shí)別等領(lǐng)域，，其應(yīng)用的范圍越來(lái)越廣，在數(shù)字地球的進(jìn)程中起著相當(dāng)重要的作用。在傳統(tǒng)的大幅面光電掃描儀數(shù)據(jù)采集過(guò)程中并行數(shù)據(jù)的拼接主要是先在PC機(jī)上緩存然后靠軟件實(shí)現(xiàn)，而本文在實(shí)現(xiàn)了并行數(shù)據(jù)采集的前提下，提出了一種新的大幅面光電掃描儀并行數(shù)據(jù)拼接方法即基于FPGA的硬件拼接法，該方法能夠?qū)崟r(shí)的對(duì)多路并行數(shù)據(jù)進(jìn)行高精度拼接。 本文主要介紹了基于FPGA的大幅面光電掃描儀并行數(shù)據(jù)采集與拼接平臺(tái)的硬件電路設(shè)計(jì)和控制程序設(shè)計(jì)。其中硬件電路方面主要介紹了本平臺(tái)各個(gè)硬件電路模塊的設(shè)計(jì)，包括CCD圖像采集、AD模數(shù)轉(zhuǎn)換、SDRAM圖像存儲(chǔ)、UART人機(jī)交互、Camera Link傳輸、USB傳輸、全局時(shí)鐘復(fù)位及平臺(tái)供電等硬件電路模塊。控制程序方面著重介紹了針對(duì)平臺(tái)中硬件電路的控制程序設(shè)計(jì)，包括CCD傳感器驅(qū)動(dòng)時(shí)序、AD配置及驅(qū)動(dòng)時(shí)序、SDRAM配置及驅(qū)動(dòng)時(shí)序和并行數(shù)據(jù)實(shí)時(shí)拼接控制程序等設(shè)計(jì)工作。 目前國(guó)內(nèi)的大幅面光電掃描儀生產(chǎn)主要是購(gòu)買(mǎi)國(guó)外成熟的硬件數(shù)據(jù)采集平臺(tái)和已經(jīng)整套封裝完整的軟件處理系統(tǒng)，雖然基于這種模式的開(kāi)發(fā)有著模塊化的優(yōu)勢(shì)，整個(gè)系統(tǒng)的開(kāi)發(fā)周期相對(duì)較短，但是核心技術(shù)基本上被國(guó)外的大型企業(yè)所壟斷，需要支付高昂的采購(gòu)費(fèi)用及專(zhuān)利轉(zhuǎn)讓費(fèi)用，并不適合大規(guī)模的生產(chǎn)。本文所介紹的具有自主知識(shí)產(chǎn)權(quán)的基于FPGA的大幅面光電掃描儀并行數(shù)據(jù)采集與拼接平臺(tái)主要由CCD圖像采集模塊和基于FPGA的控制模塊組成。在平臺(tái)控制程序設(shè)計(jì)時(shí)充分運(yùn)用了豐富的IP核資源、Avalon總線技術(shù)及SOPC片上可編程技術(shù)實(shí)現(xiàn)了并行數(shù)據(jù)采集和高精度硬件平臺(tái)實(shí)時(shí)數(shù)據(jù)拼接，對(duì)于整個(gè)大幅面光電掃描儀具有極其重要的作用。
[Abstract]:Large format photoelectric scanners are widely used in the fields of military, industry, science and education, culture and other fields, such as graphic scanning, character recognition and so on. It plays a very important role in the process of digital earth. In the traditional data acquisition process of large format photoelectric scanner, the parallel data splicing is mainly realized by software after buffer on PC. On the premise of parallel data acquisition, a new parallel data splicing method of large format photoelectric scanner is proposed in this paper, that is, hardware splicing method based on FPGA. This method can perform high precision splicing of multichannel parallel data in real time. This paper mainly introduces the hardware circuit design and control program design of parallel data acquisition and splicing platform of large format photoelectric scanner based on FPGA. The design of road module. It includes CCD image acquisition, AD A / D conversion, SDRAM image storage, UART human-computer interaction, camera Link transmission and USB transmission. In the aspect of control program, the design of control program for hardware circuit in the platform, including AD configuration and driving timing of CCD sensor driver, is introduced emphatically. SDRAM configuration and drive timing and parallel data real-time splicing control program design. At present, the domestic production of large format photoelectric scanner is mainly to buy mature hardware data acquisition platform and complete software processing system. Although the development based on this model has the advantage of modularization, the whole system development cycle is relatively short, but the core technology is basically monopolized by foreign large enterprises. High procurement costs and patent transfer costs need to be paid. It is not suitable for large-scale production. The parallel data acquisition and splicing platform of large format photoelectric scanner based on FPGA, which has independent intellectual property rights, is mainly composed of CCD image acquisition module and FPG based platform. A control module composition. In the platform control program design, the full use of the rich IP core resources. Avalon bus technology and SOPC on-chip programmable technology realize parallel data acquisition and real-time data splicing on high precision hardware platform, which plays an extremely important role in the whole large format photoelectric scanner.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TP334.22;TP274.2

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