多圖層下增強乘客信息系統(tǒng)性能研究
[Abstract]:Passenger information system is based on multimedia network technology, computer system as the core, through the establishment of station hall, platform, entrance and exit, train display terminal, The multimedia integrated information system (.PIS), which enables passengers to understand train operation information and public media information in a timely and accurate manner, has become an important information transmission medium and has achieved high efficiency in the performance of the PiS system. Stabilization is a very important task for us. It is an important task for us to find ways to improve the performance of PiS system from all aspects. In order to improve the performance of the PiS system, this paper analyzes the influencing factors of the system performance under the PiS system, and through the analysis of these factors as well as the use of SMP8756, a high efficiency video coding chip, which provides hardware graphics acceleration. This paper studies the transplanting method of object-oriented framework QT and DirectFB in SMP8756 multimedia chip system and how to improve the performance of PiS system through multi-layer module design in SMP8756 multimedia chip. At the same time, this paper uses QT and DirectFB to develop the function module of the display system of the PiS terminal, and realizes the development of the function of the display system of the PiS terminal. In this paper, three different design schemes are designed by using different development techniques and design ideas. Through the design analysis of the first single layer design scheme, The main defects of the design are studied, and the problems of low performance and low reliability are analyzed and improved. Based on this, a multi-layer design scheme is proposed and implemented. By comparing the performance of the single-layer design scheme with the multi-layer design scheme, it is proved that the performance of the PiS system under the multi-layer design scheme is improved. At the same time, this paper studies the design ideas of the first two schemes, analyzes the reasons for the poor applicability of the two schemes, and puts forward the design idea of the interface design scheme, in order to improve the expansibility and applicability of the design scheme. This paper implements a typical embedded development project, adopts the general method of embedded development, studies the method of transplanting the development library in the embedded environment, and puts forward a design scheme that can improve the performance of the PiS system. The performance of the project is tested effectively, which provides a good design idea for the development of the PiS related system.
【學(xué)位授予單位】:北京交通大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TP399-C6
【參考文獻】
相關(guān)期刊論文 前6條
1 張增虎;李博;郭銳;;嵌入式Linux平臺下MPlayer圖形用戶界面的實現(xiàn)[J];電視技術(shù);2014年05期
2 李順;楊煦;;嵌入式智能車載多媒體終端控制系統(tǒng)的設(shè)計與實現(xiàn)[J];沈陽航空航天大學(xué)學(xué)報;2013年03期
3 劉春濤;;嵌入式機車車輛車載播放系統(tǒng)軟件設(shè)計與實現(xiàn)[J];電子世界;2013年11期
4 武岳;;地鐵旅客信息系統(tǒng)無線網(wǎng)絡(luò)方案與實施[J];機械工程師;2013年03期
5 吳文良;;一種適合嵌入式系統(tǒng)的圖形庫DirectFB[J];硅谷;2010年05期
6 劉小雙;李建平;鄭志國;;DirectFB圖形加速在嵌入式系統(tǒng)中的應(yīng)用[J];單片機與嵌入式系統(tǒng)應(yīng)用;2009年03期
相關(guān)會議論文 前1條
1 朱偉;;淺析軌道交通乘客信息系統(tǒng)[A];2014中國城市地下空間開發(fā)高峰論壇論文集[C];2014年
相關(guān)碩士學(xué)位論文 前7條
1 王齊飛;基于Linux平臺的車載視頻監(jiān)控系統(tǒng)研發(fā)[D];天津大學(xué);2014年
2 張增虎;基于Qt的嵌入式多媒體播放終端的設(shè)計與實現(xiàn)[D];中北大學(xué);2014年
3 楊金林;基于DM6446和Qt的嵌入式圖形界面的研究與應(yīng)用[D];青島大學(xué);2012年
4 蔣永剛;嵌入式多媒體系統(tǒng)中硬件加速技術(shù)的應(yīng)用[D];上海交通大學(xué);2009年
5 劉小雙;基于雷達顯控終端的高級GUI技術(shù)研究[D];電子科技大學(xué);2009年
6 趙磊;基于FPGA的圖像增強技術(shù)的實現(xiàn)[D];昆明理工大學(xué);2008年
7 姚于斌;面向圖像處理的可重構(gòu)協(xié)處理器結(jié)構(gòu)設(shè)計研究[D];上海交通大學(xué);2008年
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