【作者】 刘伟；

【导师】 吉逸； 方宁生； 郝瑞东；

【作者基本信息】 东南大学 ， 软件工程， 2015， 硕士

【摘要】 随着智能手机的普及和各种APP应用的蓬勃发展,由全球80%的车厂和70%的手机厂组成的汽车链接联盟CCC推出镜像连接,它是一种实现车机和手机有效互联的技术标准,基于它车载多媒体与智能手机间能无缝连接,使用手机上各种APP,彻底改变市场上传统车载多媒体系统普遍只有导航和简单的娱乐功能这一定位。基于镜像连接开发车载多媒体系统,可以帮助车厂用较低的系统开发成本和周期,就能将更智能和高品质的应用带到车里,形成良好的互动用户体验。本文以手机和车机的智能互连为研究背景,基于本人正在参与的公司下一代车载多媒体的开发项目,对镜像连接技术的实现从四个方面进行分析和研究：手机设备的发现与连接(基于通用即插即用技术,实现智能手机服务器端和车载多媒体客户端的连接及设备配置)、远程显示传输与处理(基于传统的虚拟网络计算的远程帧缓存技术及Wayland显示服务器架构,实现智能手机和车载多媒体的屏幕映射)、音频实时传输(基于RTP实时传输技术,实现智能手机和车载多媒体系统间的音频实时传输)以及车载端的触屏远程控制(基于远程帧缓存消息中的触摸事件消息以及基于QT技术添加快速退出键图层),提出基于LINUX操作系统的手机和车机互联的整体设计方案,对四个方面所涉及的关键技术提出解决方法。最后,本文基于EVM开发板,模拟车机客户端实现了与手机的互联,并从连接、显示、音频传输到触屏远程控制四个方面进行了功能测试,结果表明,达到了项目预期的要求,并具有易扩展性,较强的兼容性以及便捷的操作性。更多还原

【Abstract】 With the huge-increase of smartphones and interactive APP experience, Mirror Link launched by Car Connectivity Consortium-constituted by worldwide 80% vehicle plants and 70% mobile phone plants. It is an effective connectivity technical standard between smartphone and vehicle multimedia system. Based on it, vehicle multimedia system can be linked to smartphone and access APP, which will totally change people’s expression on traditional vehicle multimedia system-only support navigation and simple entertainment activity. Based on it, vehicle plant can give end-user better interactive experience with less design investment and cycle time.Based on Mirror Link study and currently involved next generation vehicle multimedia project at company, this thesis study Mirror Link technology and realize it on company project from below 4 aspects:Connectivity (UPnP, realize smartphones server and vehicle multimedia client discovery and configuration process), View (traditional VNC/RFB frame transportation and Wayland display architecture, realize smartphones screen display copied on vehicle multimedia screen), Audio (RTP, realize audio real-time transportation on smartphone and vehicle multimedia) and Touch remote control (The transportation process design of RFB touch event message; Based on Qt to create an virtual "quit" button on vehicle multimedia screen for end user’s easy-quit). This thesis will study and provide solutions on all above mentioned 4 key technologies and the whole designed connection system is based on LINUX.In the end, this thesis use EVM board (simulate the vehicle multimedia system) to connect with smartphones, and do functional test from four aspects:connectivity, view, audio and touch control. The result shows actual performance meets project requirements and demonstrates it is easy expansive, compatible and convenient operation.更多还原