【作者】 陶会荣；

【导师】 张明路；

【作者基本信息】 河北工业大学 ， 机械电子工程， 2007， 硕士

【摘要】 随着中国未来汽车市场的快速发展和汽车电子的价值含量的迅速提高,中国的汽车电子产业将形成巨大经济规模效应。从某种意义上来讲,汽车技术的发展水平即代表了当今科技发展的水平,而汽车电子技术是汽车工业发展的重要动力源泉。目前我国汽车工业面临着入世的巨大冲击,在未来的世界汽车业竞争中能否掌握主动权,很大程度上取决于是否能在电子技术上占领制高点。加快汽车电子技术领域的研究应用是我国汽车工业发展的当务之急。本文正是在天津市科技发展计划攻关项目基金支持下开展的对汽车多媒体系统的研究。该系统采用嵌入式系统设计方法进行研究开发,本文的主要工作如下:1.通过对嵌入式系统设计方法的研究,以及对汽车行业电子元件标准的分析,提出了汽车多媒体系统的总体设计方案,按照嵌入式系统的设计思路对本系统的软、硬件进行了选型,给出了系统的总体功能框图,并提出了系统的总体开发步骤。2.通过对Windows CE操作系统的深入分析,给出了将该操作系统移植到ARM微处理器的开发流程,包括BSP定制、系统模块定制和OAL定制。在此基础上,提出了一种模块化的设计方法,即将以上需要移植的三部分均进行模块化设计管理,分块完成,这样不仅使得设计思路清晰,更重要的是使操作系统移植更具通用性。3.在分析Windows CE下驱动模型的基础上,采用分层的驱动程序结构,实现了基于ARM的触摸屏驱动程序。这种分层结构有利于程序的移植,可缩短开发周期,可维护性好。采用流接口驱动程序结构,实现了串口驱动程序和SD卡控制驱动程序。最后,根据本系统实际运行取得的预期结果,总结分析了本论文的主要研究工作,并对汽车多媒体系统将来的发展方向作了展望。更多还原

【Abstract】 With the development of automobile market in china and the rising of value content of automobile electronic, the automobile electronic industry will form a enormity scale of ecnomy in china.At present, the automobile industry of china is faced with huge impact.The development of automobile electronic is the urgent affair.The project is supported by science development program in Tianjin. The system chooses a design method of embedded system. This paper carried out research in these aspects as follows:Firstly, on the basis of reseach on the design methods of embedded system, this paper presents holistic design of the system. According to the design method of embedded system, the software and hardware are made certain. The hardware frame of this system and the develop steps are given.Secondly, after analyzing the operating system-Windows CE deeply, this paper presented the development process of transplanting Windows CE to ARM, the microprocessor. It included BSP customed, system customed and OAL customed. On this basis, this paper put forward a modular design method, that was, managed and desinged the three transplanted parts modularly. This made the design clear, and what’s more, it enabled the transplant of operating system much more universal.Thirdly, on the basis of analyzing the driver model in Windows CE, this paper completed touchscreen driver that was based on ARM in the hierarchical driver structure. This structure is propitious to transplant program, thus can shorten development cycle and easy to maintaine.And then this paper completed serial driver and SD card driver in the structure of streaming interface driver.This automobile multimedia system obtained expectant result by practical running, fulfilled the design’s purpose. Sum-up of this paper’s main work was made, at last. The paper also described the prospect of the automobile multimedia system.更多还原