本文選題：多媒體播放器　切入點(diǎn)：嵌入式系統(tǒng)　出處：《沈陽工業(yè)大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著經(jīng)濟(jì)發(fā)展與城市化進(jìn)程加劇，地鐵作為低碳環(huán)保的公共交通工具已經(jīng)得到了廣泛的應(yīng)用。同時(shí)移動(dòng)傳媒作為新興媒體已成為人們生活當(dāng)中重要的信息傳播方式。因此車載信息娛樂系統(tǒng)與報(bào)站系統(tǒng)是地鐵列車必不可少的配置，這樣可以使乘客準(zhǔn)確地確定到站站點(diǎn)，同時(shí)緩解乏味的旅途，也可以輕松地獲得各站點(diǎn)的換乘路線、乘車指南等有意義的信息。 本文深入地分析了現(xiàn)有報(bào)站系統(tǒng)與媒體播放系統(tǒng)的技術(shù)解決方案，以及現(xiàn)有系統(tǒng)各自的具體功能，設(shè)計(jì)開發(fā)了一種采用嵌入式技術(shù)的車載媒體報(bào)站系統(tǒng)，完成了系統(tǒng)功能測試。 本文設(shè)計(jì)的地鐵車載系統(tǒng)，其硬件平臺是采用Intel的Xscale PXA270芯片為核心處理器，嵌入式操作系統(tǒng)為WinCE。此系統(tǒng)采用分布式布局，即在列車的車頭放置車載廣播中心，實(shí)現(xiàn)站點(diǎn)的接收、媒體文件的存儲，通過IP組播將到站離站信息與媒體文件傳輸至各節(jié)車廂。在各節(jié)車廂放置車載播放終端，，負(fù)責(zé)接收站點(diǎn)信息與媒體文件，并完成多媒體播放與站點(diǎn)信息的廣播報(bào)站功能。 各節(jié)車廂的車載播放終端也可以作為車載廣播中心進(jìn)行工作，這樣系統(tǒng)更加穩(wěn)定可靠。媒體文件的播放采用DirectShow技術(shù)，解碼優(yōu)秀，開發(fā)快捷。自動(dòng)報(bào)站則通過在各站點(diǎn)放置站臺節(jié)點(diǎn)，列車安裝車載節(jié)點(diǎn)來實(shí)現(xiàn)的，通過對各站點(diǎn)進(jìn)行統(tǒng)一編碼來區(qū)別各站點(diǎn)，同時(shí)通過RF射頻發(fā)送各站點(diǎn)信息，當(dāng)車載節(jié)點(diǎn)進(jìn)入到接收范圍則接收到站站點(diǎn)信息從而實(shí)現(xiàn)報(bào)站。 經(jīng)測試系統(tǒng)的媒體文件播放、自動(dòng)報(bào)站語音與視圖提示、相關(guān)信息提示等功能均已實(shí)現(xiàn)；車載廣播中心通過更改播放列表完成媒體文件的更新，既方便快捷又經(jīng)濟(jì)；車載播放終端界面簡潔人性化，通過軟件升級可支持更多種格式。
[Abstract]:As the process of economic development and urbanization intensifies, Subway has been widely used as a low carbon environmental protection public transportation system. Meanwhile, as a new medium, mobile media has become an important way of information dissemination in people's daily life. The system is the essential configuration of the subway train. This allows passengers to determine exactly where to arrive, to ease tedious journeys, and to easily obtain meaningful information about the transfer routes, ride guides, and so on. This paper deeply analyzes the technical solutions of the existing message system and the media playback system, as well as the specific functions of the existing system, and designs and develops a kind of on-board media reporting system based on embedded technology. The system function test is completed. The hardware platform of this system is based on Xscale PXA270 chip of Intel and the embedded operating system is WinCE. This system adopts distributed layout, that is, the on-board broadcasting center is placed in the front of the train. To realize the receiving of the station, the storage of the media files, the transfer of the information and the media files to the compartments through IP multicast, and the placement of the on-board playback terminals in the compartments, which are responsible for receiving the information and media files of the stations. And complete multimedia play and site information broadcast station function. The on-board terminal of each car can also be used as the vehicle broadcast center, so the system is more stable and reliable. The media file is played by DirectShow technology, and the decoding is excellent. The automatic reporting station is realized by placing the station node in each station, the train installs the on-board node to realize, by carrying on the unified code to each station to distinguish each station, at the same time sending the information of each station through the RF radio frequency, When the vehicle node enters the receiving range, it receives the station station information to realize the station reporting. After the media files are played in the test system, the functions such as voice and view prompt, related information prompt and so on have been realized, the vehicle broadcast center completes the update of the media files by changing the playlist, which is convenient, quick and economical. Vehicle player terminal interface simple humanization, through software upgrade can support more formats.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP368.12

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郜麗鵬;朱梅冬;楊丹;;基于ZigBee的加權(quán)質(zhì)心定位算法的仿真與實(shí)現(xiàn)[J];傳感技術(shù)學(xué)報(bào);2010年01期

2 劉敏;;嵌入式流媒體播放器軟件的設(shè)計(jì)與實(shí)現(xiàn)[J];電腦知識與技術(shù);2009年23期

3 老賈;三大主流流媒體播放器大比拼[J];中國電子與網(wǎng)絡(luò)出版;2003年04期

4 王章瑞;王勇;張林霞;;基于RF的無線公交車報(bào)站系統(tǒng)設(shè)計(jì)[J];國外電子測量技術(shù);2007年04期

5 陳旭梅,于雷,郭繼孚,全永焱木;美國智能交通系統(tǒng)ITS的近期發(fā)展綜述[J];中外公路;2003年02期

6 張勇;羅靜;;基于DirectShow的AVI文件在局域網(wǎng)中的組播與接收[J];計(jì)算機(jī)工程;2006年10期

7 孫大為;曲博;李曉;江早;常桂然;;端到端IP組播技術(shù)及其在PIS中的應(yīng)用[J];計(jì)算機(jī)工程;2010年16期

8 胡揚(yáng)超;;WinCE系統(tǒng)在地鐵自動(dòng)檢票機(jī)中的應(yīng)用[J];機(jī)電工程技術(shù);2011年03期

9 陳勝;董德存;;公交電子站牌系統(tǒng)分析[J];交通科技與經(jīng)濟(jì);2009年04期

10 金薇薇;;公交移動(dòng)傳媒產(chǎn)業(yè)發(fā)展分析——以巴士在線傳媒有限公司為例[J];世紀(jì)橋;2009年15期

相關(guān)碩士學(xué)位論文 前2條

1 汪亞東;基于GPS的嵌入式公交自動(dòng)報(bào)站系統(tǒng)的研究[D];西安科技大學(xué);2008年

2 陳智;基于CMMB標(biāo)準(zhǔn)的移動(dòng)多媒體廣播接收與播放系統(tǒng)開發(fā)[D];廈門大學(xué);2008年

本文編號：1586166