基于ARM的視頻數(shù)據(jù)采集傳輸系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)

欒博悅+張鎣+趙慧元

收稿日期：2013-05-27

作者簡(jiǎn)介：欒博悅(1990—），男，山東牟平人，學(xué)士生，研究方向：電子科學(xué)與技術(shù)。

文章編號(hào)：1003-6199(2014)02-0101-04

摘 要：對(duì)基于ARM的視頻數(shù)據(jù)采集傳輸系統(tǒng)進(jìn)行研究及設(shè)計(jì)，通過ARM新一代嵌入式開發(fā)平臺(tái)，與現(xiàn)在流行的互聯(lián)網(wǎng)及無線傳輸技術(shù)相結(jié)合，實(shí)現(xiàn)視頻數(shù)據(jù)的采集和遠(yuǎn)程數(shù)據(jù)的傳輸。設(shè)計(jì)中采用嵌入式Linux系統(tǒng)通過USB攝像頭進(jìn)行視頻數(shù)據(jù)的采集，解決圖像的格式轉(zhuǎn)換和MJPEG編碼壓縮的數(shù)據(jù)處理，以及通過軟件的設(shè)計(jì)實(shí)現(xiàn)MJPEG格式文件到流媒體輸出等問題，最終實(shí)現(xiàn)視頻數(shù)據(jù)采集和傳輸。本系統(tǒng)有以下幾個(gè)方面的應(yīng)用：家庭環(huán)境的實(shí)時(shí)監(jiān)測(cè)、家居的智能化控制、高危車間廠房無線監(jiān)控與控制、中長(zhǎng)距離的家庭視頻通訊、企業(yè)實(shí)時(shí)視頻監(jiān)控等。

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關(guān)鍵詞：嵌入式；視頻；數(shù)據(jù)采集；傳輸

中圖分類號(hào)：TP368文獻(xiàn)標(biāo)識(shí)碼：A

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Design and Implementation of Video Data Acquisition and Transmission Based on ARM

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LUAN Boyue，ZHANG Ying，ZHAO Huiyuan

(Beijing Institute ofTechnologu,Zhuhai,Guangdong 519085，China)

Abstract:The video data acquisition and transmission based on ARM is discussed in this paper. through a new generation of ARM embedded development plaform,and combined with internet and wireless transmission technology,implementation of video data acquisition and remote data transmission.Usingembedded Linux system through the USB camera for video data collection,solve the image format conversion and MJPEG encoding date processing,designed and implemented through software MJPEG format output files to streaming media,finally achieved of video date acquisition and transmission.This system can be used for real-time monitoring of family environment and home intelligent control,in some highrisk factory workshop wireless monitoring and control ,can also be used in longdistance home video communications and realtime video surveillance in enterprise.

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Key words:embedded system；video； data acquisition；transmission

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1 引 言

隨著人們?nèi)粘Ｉ罟ぷ鞯木W(wǎng)絡(luò)化,各種系統(tǒng)的無線化，以及多媒體技術(shù)、寬帶網(wǎng)絡(luò)傳輸技術(shù)的不斷發(fā)展，視頻數(shù)據(jù)的采集和傳輸已成為遠(yuǎn)程監(jiān)控和工業(yè)自動(dòng)化控制領(lǐng)域的一項(xiàng)核心技術(shù)。在日益成熟的ARM嵌入式開發(fā)平臺(tái)下，其穩(wěn)定性也大大提高，通過CMOS攝像頭將視頻信號(hào)數(shù)字化后再將視頻數(shù)據(jù)進(jìn)行壓縮，經(jīng)由網(wǎng)絡(luò)模塊上傳至局域網(wǎng)或互聯(lián)網(wǎng)，實(shí)現(xiàn)了視頻數(shù)據(jù)采集傳輸。

2 系統(tǒng)總體設(shè)計(jì)

整個(gè)系統(tǒng)的設(shè)計(jì)分為三個(gè)部分：USB攝像頭、ARM嵌入式開發(fā)平臺(tái)、網(wǎng)絡(luò)模塊。系統(tǒng)整體結(jié)構(gòu)如圖1所示。

系統(tǒng)中所采用的攝像頭是中星微公司生產(chǎn)的ZC301芯片的攝像頭，該攝像頭將CMOS圖像傳感器所產(chǎn)生的圖像信號(hào)送到微處理器，處理后再轉(zhuǎn)換為數(shù)字信號(hào)輸出到外部設(shè)備。……