基于ARM-Linux的無線視頻監(jiān)控系統(tǒng)設(shè)計
本文關(guān)鍵詞:基于ARM-Linux的無線視頻監(jiān)控系統(tǒng)設(shè)計 出處:《武漢工程大學(xué)》2013年碩士論文 論文類型:學(xué)位論文
更多相關(guān)文章: 嵌入式 Linux操作系統(tǒng) 視頻監(jiān)控系統(tǒng) 視頻采集 H.264
【摘要】:視頻監(jiān)控以準確、直觀等特點,已在家庭安防、工業(yè)控制等領(lǐng)域有著廣泛的應(yīng)用。傳統(tǒng)的視頻監(jiān)控系統(tǒng)大多依賴于有線網(wǎng)絡(luò),系統(tǒng)結(jié)構(gòu)復(fù)雜,成本高且靈活性差。近年來,隨著嵌入式技術(shù)、視頻壓縮技術(shù)和網(wǎng)絡(luò)技術(shù)的發(fā)展,視頻監(jiān)控系統(tǒng)正朝著無線化、靈活高效的嵌入式方向發(fā)展。 本文針對傳統(tǒng)視頻監(jiān)控系統(tǒng)存在的不足,結(jié)合嵌入式技術(shù)、H.264編碼標準和WiFi技術(shù),設(shè)計并實現(xiàn)了一種嵌入式無線視頻監(jiān)控系統(tǒng)。該系統(tǒng)以ARM9微處理器為核心硬件,以高效、開源的嵌入式Linux操作系統(tǒng)作為軟件平臺,以USB無線WiFi網(wǎng)卡作為視頻傳輸模塊。論文首先介紹了視頻監(jiān)控系統(tǒng)的現(xiàn)狀和今后的發(fā)展趨勢,,闡述了研究嵌入式視頻監(jiān)控系統(tǒng)的價值和意義,然后給出了系統(tǒng)的總體設(shè)計方案,接著完成了系統(tǒng)主要硬件設(shè)備的選型,建立了交叉開發(fā)環(huán)境和進行了嵌入式Linux操作系統(tǒng)的移植。接著重點介紹了嵌入式Linux下設(shè)備驅(qū)動的開發(fā)、利用V4L2提供的接口進行的視頻采集、采用H.264編碼標準對視頻的處理和基于RTP/RTCP協(xié)議的視頻傳輸。最后在遠程客戶端利用DirectShow技術(shù)實現(xiàn)了視頻的解碼及顯示。 系統(tǒng)測試結(jié)果表明:系統(tǒng)能穩(wěn)定運行,在視頻幀的壓縮率及傳輸上均表現(xiàn)良好,遠程監(jiān)控端獲得的視頻清晰流暢、延遲低,滿足系統(tǒng)的設(shè)計要求及目標。
[Abstract]:Video surveillance with accurate, intuitive features, has been in the family security, industrial control and other fields are widely used. The traditional video monitoring systems mostly depend on the cable network system has complex structure, high cost and poor flexibility. In recent years, with the development of embedded technology, video compression technology and network technology, video surveillance the system is moving in the direction of embedded wireless, flexible and efficient development.
Aiming at the shortcomings of traditional video surveillance system, combined with embedded technology, H.264 encoding standard and WiFi technology, design and implementation of an embedded wireless video monitoring system. This system uses ARM9 microprocessor as the core hardware in an efficient, open source embedded Linux operating system as the software platform, using USB as the wireless WiFi video transmission module. This paper first introduces the status of video surveillance system and the future development trend, expounds the value and significance of the research of embedded video monitoring system, and then gives the overall design of system design, and then completed the selection of the main hardware equipment, the establishment of a cross development environment and the transplantation of embedded Linux operating system. Then introduces the development of embedded Linux device driver, video capture using V4L2 interface, using H.264 encoding standard The video processing and video transmission based on RTP/RTCP protocol. Finally in the remote client using DirectShow technology to realize the video decoding and display.
The system test results show that the stable operation of the system, in the video compression and transmission rate are good, the remote monitoring terminal to access the video is clear and smooth, low delay, meet the system design requirements and objectives.
【學(xué)位授予單位】:武漢工程大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:TN948.6;TP368.1
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