车载多媒体系统设计及影像控制和通信控制实现
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摘要
随着汽车工业,电子工业的飞速发展和世界经济的增长,汽车的普及率越来越高。同时随着人们对生活品质要求的提高,汽车厂商开始研制车载电子设备并随着时代的发展得到不断的发展和完善。随着汽车性能的不断提升和发展,人们对于驾驶环境的要求也越来越高,为了提供更为舒适的驾驶环境并提供一定的驾驶服务,车载多媒体系统孕育而生。作为车载电子设备的一部分,车载多媒体系统集视听娱乐、通讯导航、辅助驾驶等多种功能于一身,并且车载多媒体系统提供通用扩展接口为接续其他设备提供可能,从而为驾驶者提供更多功能的服务,创造良好的驾驶环境。
目前车载多媒体系统利用当今最先进的数据媒体技术,涉及数字信号处理、图像信号处理,数字声音合成等技术领域,具有良好的可靠性和可移植性。
本论文主要研究车载多媒体系统软件系统的设计及影像控制模块和通信控制模块的软件程序设计和实现。
软件系统设计是整个软件设计的核心,直接影响整个产品的使用性能,质量和易用性。结合项目产品的开发,本文提出了完整的软件系统架构,对整个软件系统进行了模块化和层次化的结构划分并对模块间接口进行了标准化的定义。整个软件系统平台采用目前通用的基于RTOS的实时操作系统,使软件产品具有很好的扩展性和可移植性。
影像控制功能是车载多媒体系统中非常重要的一个部分,当今科技的高速发展,各大厂商提供了多种多样的多媒体设备如TV、NAVI、DVD、IPOD等为用户提供了丰富多彩的影像视频内容,这些不同产品的输出影像信号从不同的线路输入产品。影像控制模块设计和实现了管理层控制命令的接收和处理,影像控制芯片的控制数据做成和发送的功能。使得系统具有影像通道切换功能、影像画面效果调整功能、屏幕属性设定功能为用户提供良好的视觉享受。
通信控制模块对7层通信协议体系结构进行了简化,设计实现了通信控制模块的控制层、应用层和驱动层来进行通信数据的封装,发送,接收和解析,实现了车载多媒体系统标准通信协议。使得用户不仅可以使用系统本身自带的各种设备并且可以通过标准通讯协议使用其他的车载多媒体系统以外的设备和功能,实现了车载多媒体系统功能的扩展。
As the rapid development of auto industry and electronic industry and growth of the world economy, the popularity rate of automobile is higher and higher. At the same time, people are persuing higher quality of life demands, which drives automobile manufactures start to develop vehicle electronic equipment and make the skills perfected day by day. As the performance of automobile is continuously upgraded and developed, people’s demands of driving environment are getting higher and higher. In order to offer more comfortable driving environment and better driving service, vehicle multimedia system is developed as a part of the electronic equipment. Vehicle multimedia system integrates all kinds of functions together, such as audio-visual entertainment, communication navigation, driver assistance and cooperative driving, and etc. Vehicle multimedia system also provides common expanding interfaces which connect other equipments for more functional services.
Currently vehicle multimedia system uses the most advanced data media skills, including digital signal processing, image signal processing, digital sound mixer and ect. which provides good reliability and portability.
This thesis mainly focuses on two points: (i) the design of vehicle multimedia software system and image control module; (ii) the software program design and the implementation of the communication control module.
Software system design is the core of the software design, which directly affects the performance, quality and accessibility of the entire product. This thesis brings forward the integrated system architecture, divided the framework of the whole system by modularization and hierarchy and standardizes the interfaces between modules. We use the current real-time operating system based on RTOS as the system platform, which can provide better expansibility and portability for the software.
Image control plays an very important part in auto sound system. As the rapid development of current science and technology, all kinds of multimedia equipments, such as TV, NAVI, DVD, IPOD..., provide a variety of digital image contents output from different routes for users. Image control module is designed to implement the reception of control order from management layer and the accomplishment and transmission functions of the control data from image control chips, which make the system featured with functions like image channels switching, image effect adjustment and screen attribute setup for users’better visual enjoyment.
Communication control module, which is designed with control layer, application layer and driver layer to implement the encapsulation, transmission, reception and analyzation of communication data, simplified 7 layers communication protocols system structure. In this way, the standard communication protocols of vehicle multimedia system are realized, and users can use not only the equipments which come with the system and also other equipments which are not with vehicle multimedia system but input from expanding interfaces, which implemented the expanding function of vehicle multimedia system.
目前车载多媒体系统利用当今最先进的数据媒体技术,涉及数字信号处理、图像信号处理,数字声音合成等技术领域,具有良好的可靠性和可移植性。
本论文主要研究车载多媒体系统软件系统的设计及影像控制模块和通信控制模块的软件程序设计和实现。
软件系统设计是整个软件设计的核心,直接影响整个产品的使用性能,质量和易用性。结合项目产品的开发,本文提出了完整的软件系统架构,对整个软件系统进行了模块化和层次化的结构划分并对模块间接口进行了标准化的定义。整个软件系统平台采用目前通用的基于RTOS的实时操作系统,使软件产品具有很好的扩展性和可移植性。
影像控制功能是车载多媒体系统中非常重要的一个部分,当今科技的高速发展,各大厂商提供了多种多样的多媒体设备如TV、NAVI、DVD、IPOD等为用户提供了丰富多彩的影像视频内容,这些不同产品的输出影像信号从不同的线路输入产品。影像控制模块设计和实现了管理层控制命令的接收和处理,影像控制芯片的控制数据做成和发送的功能。使得系统具有影像通道切换功能、影像画面效果调整功能、屏幕属性设定功能为用户提供良好的视觉享受。
通信控制模块对7层通信协议体系结构进行了简化,设计实现了通信控制模块的控制层、应用层和驱动层来进行通信数据的封装,发送,接收和解析,实现了车载多媒体系统标准通信协议。使得用户不仅可以使用系统本身自带的各种设备并且可以通过标准通讯协议使用其他的车载多媒体系统以外的设备和功能,实现了车载多媒体系统功能的扩展。
As the rapid development of auto industry and electronic industry and growth of the world economy, the popularity rate of automobile is higher and higher. At the same time, people are persuing higher quality of life demands, which drives automobile manufactures start to develop vehicle electronic equipment and make the skills perfected day by day. As the performance of automobile is continuously upgraded and developed, people’s demands of driving environment are getting higher and higher. In order to offer more comfortable driving environment and better driving service, vehicle multimedia system is developed as a part of the electronic equipment. Vehicle multimedia system integrates all kinds of functions together, such as audio-visual entertainment, communication navigation, driver assistance and cooperative driving, and etc. Vehicle multimedia system also provides common expanding interfaces which connect other equipments for more functional services.
Currently vehicle multimedia system uses the most advanced data media skills, including digital signal processing, image signal processing, digital sound mixer and ect. which provides good reliability and portability.
This thesis mainly focuses on two points: (i) the design of vehicle multimedia software system and image control module; (ii) the software program design and the implementation of the communication control module.
Software system design is the core of the software design, which directly affects the performance, quality and accessibility of the entire product. This thesis brings forward the integrated system architecture, divided the framework of the whole system by modularization and hierarchy and standardizes the interfaces between modules. We use the current real-time operating system based on RTOS as the system platform, which can provide better expansibility and portability for the software.
Image control plays an very important part in auto sound system. As the rapid development of current science and technology, all kinds of multimedia equipments, such as TV, NAVI, DVD, IPOD..., provide a variety of digital image contents output from different routes for users. Image control module is designed to implement the reception of control order from management layer and the accomplishment and transmission functions of the control data from image control chips, which make the system featured with functions like image channels switching, image effect adjustment and screen attribute setup for users’better visual enjoyment.
Communication control module, which is designed with control layer, application layer and driver layer to implement the encapsulation, transmission, reception and analyzation of communication data, simplified 7 layers communication protocols system structure. In this way, the standard communication protocols of vehicle multimedia system are realized, and users can use not only the equipments which come with the system and also other equipments which are not with vehicle multimedia system but input from expanding interfaces, which implemented the expanding function of vehicle multimedia system.
引文
[1]杨剑.中国汽车音响市场之分析.电子与电脑,2007,(6):40—42.
[2]赵福堂.汽车电器与电子设备.北京:北京理工大学出版社,2009.
[3]肖军.现代汽车音响的新潮流.电子技术,2006,(5):28—31.
[4]王相林.计算机网络原理、技术与应用.北京:机械工业出版社,2010.
[5]刘海成.单片机及应用系统设计原理与实践.北京:北京航空航天大学出版社,2009
[6]曹文浩.一种嵌入式操作系统内核的设计与实现[D].长春:吉林大学计算机科学与技术学院,2009.
[7]刘富强.数字视频图像处理与通信.北京:机械工业出版社,2010.
[8] RX850用户手册.东京:日本NEC公司,2007.
[9]朱珍民,隋雪青.嵌入式实时操作系统及其应用开发.北京:北京邮电大学出版社,2006.
[10]俞玉莲,胡之惠,李莉.数字信号处理原理和算法实现.北京:清华大学出版社,2010.
[11]吴国伟,徐子川,姚琳.嵌入式系统原理与设计.北京:机械工业出版社,2010.
[12]李英顺.单片机原理及应用.北京:中国水利水电出版社,2010.
[13]周航慈,吴光文.基于嵌入式实时操作系统的程序设计技术.北京:北京航空航天大学出版社,2006.
[14] (美)Keith Jack.Video demystified(fifth edition) .北京:人民邮电出版社,2009.
[15]孙鹏.嵌入式TCP/IP协议的实现[D].长春:吉林大学软件学院,2005.
[16]刘洪波.基于OPC规范的数据通信软件研究与实现[D].长春:吉林大学软件学院,2008.
[17] V850ES_SJ3(ENG)手册.东京:日本NEC公司,2005.
[18] Srinivasan Desikan.软件测试原理与实践.北京:机械工业出版社,2009.
[19]顾乃绂,孙续.逻辑分析仪原理与应用.北京:人民邮电出版社,2002.
[2]赵福堂.汽车电器与电子设备.北京:北京理工大学出版社,2009.
[3]肖军.现代汽车音响的新潮流.电子技术,2006,(5):28—31.
[4]王相林.计算机网络原理、技术与应用.北京:机械工业出版社,2010.
[5]刘海成.单片机及应用系统设计原理与实践.北京:北京航空航天大学出版社,2009
[6]曹文浩.一种嵌入式操作系统内核的设计与实现[D].长春:吉林大学计算机科学与技术学院,2009.
[7]刘富强.数字视频图像处理与通信.北京:机械工业出版社,2010.
[8] RX850用户手册.东京:日本NEC公司,2007.
[9]朱珍民,隋雪青.嵌入式实时操作系统及其应用开发.北京:北京邮电大学出版社,2006.
[10]俞玉莲,胡之惠,李莉.数字信号处理原理和算法实现.北京:清华大学出版社,2010.
[11]吴国伟,徐子川,姚琳.嵌入式系统原理与设计.北京:机械工业出版社,2010.
[12]李英顺.单片机原理及应用.北京:中国水利水电出版社,2010.
[13]周航慈,吴光文.基于嵌入式实时操作系统的程序设计技术.北京:北京航空航天大学出版社,2006.
[14] (美)Keith Jack.Video demystified(fifth edition) .北京:人民邮电出版社,2009.
[15]孙鹏.嵌入式TCP/IP协议的实现[D].长春:吉林大学软件学院,2005.
[16]刘洪波.基于OPC规范的数据通信软件研究与实现[D].长春:吉林大学软件学院,2008.
[17] V850ES_SJ3(ENG)手册.东京:日本NEC公司,2005.
[18] Srinivasan Desikan.软件测试原理与实践.北京:机械工业出版社,2009.
[19]顾乃绂,孙续.逻辑分析仪原理与应用.北京:人民邮电出版社,2002.