基于Windows Mobile移动监控终端软件设计与实现
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摘要
传统音视频监控系统多采用固定终端,在设备部署、系统配置和维护等方面较复杂,缺乏灵活性。近年来无线网络和流媒体技术的发展,为基于无线网络的媒体应用系统开发提供了有利的支持。同时,移动终端处理器性能的不断提高,为移动终端提供了更强大的计算能力和多媒体处理能力。上述条件为移动音视频监控的兴起奠定了基础。移动音视频监控可保证终端随时随地灵活地接入、便捷地访问监控数据服务器。
本论文结合传统视频监控系统与移动网络流媒体技术,提出了一个基于Windows Mobile智能手机的移动音视频监控终端软件设计方案。首先对移动终端操作系统、无线通信网络、MPEG-4编解码标准和流媒体传输技术等与本课题密切相关的理论进行了阐述。接着介绍了移动监控系统的总体架构,同时分析了相关模块的功能。并在此基础上设计并实现了移动视频监控客户端软件,采用模块化设计的方法,将整个系统划分为网络接收模块、音视频解码显示模块、告警管理模块和交互控制单元四部分。网络接收模块采用RTP/RTCP协议进行音视频数据的传输;音视频解码使用FFmpeg进行数据解码;告警管理模块将突发故障通过告警短信提示给用户;交互控制单元实现用户对监控前端的管理。各个模块独立设计,降低了模块间的耦合,提高了系统的健壮性。
测试结果表明,在Windows Mobile智能手机平台上,利用多线程技术,采用RTP数据缓冲与FFmpeg解码并发执行的策略,系统具有较好的实时性和稳定性,满足了移动监控系统的应用需求。
Fixed terminals are usually adopted in traditional audio and video monitoring systems, which are complex in device deployment, system configuration and maintenance, and lack of flexibility. In recent years, wireless network and streaming media technology are developed, which provide a favorable support to the wireless network based media application system exploitation. Meanwhile, the continuous improvement of the mobile terminal processor provides a powerful computing and multimedia processing abilities. Those above lay a foundation for the rise of mobile audio and video monitoring. A mobile audio and video monitoring can ensure the terminal access the monitoring data server easily and flexibility anytime, anywhere.
This paper proposed a mobile audio and video monitoring terminal design strategy for smart phone based on Windows Mobile system combined with traditional audio and video monitoring system with mobile network streaming technology. Theories closely related to this subject such as mobile terminal operating system, wireless communication network, MPEG-4 encoding and decoding standard and streaming communication technology are introduced firstly. Then the mobile monitoring system framework is described, and the function of related structure is analyzed. On these basis, the mobile video monitoring client software is designed and implemented, here, we use a modular design approach, the whole systems contains four parts, including network receiving module, audio and video decoding display module, alarm management module and the interactive control unit. The network receiving module communicate the audio and video data in RTP/TRCP protocol, the audio and video decoding module decoding the data in FFmpeg, the alarming management module prompt the user the catastrophic failure by alarm message, the interaction control unit achieve the user’s management to the front of the monitor. Each module designed independently, which reduced the coupling between modules, and improved the robustness of the system.
The testing results show that in the Windows Mobile smart phone platform, the system has a good real-time performance and stability with the multi-threading technology, and strategy with RTP data buffer and FFmpeg decoder execute simultaneously, which meet the application requirements of mobile monitoring system.
本论文结合传统视频监控系统与移动网络流媒体技术,提出了一个基于Windows Mobile智能手机的移动音视频监控终端软件设计方案。首先对移动终端操作系统、无线通信网络、MPEG-4编解码标准和流媒体传输技术等与本课题密切相关的理论进行了阐述。接着介绍了移动监控系统的总体架构,同时分析了相关模块的功能。并在此基础上设计并实现了移动视频监控客户端软件,采用模块化设计的方法,将整个系统划分为网络接收模块、音视频解码显示模块、告警管理模块和交互控制单元四部分。网络接收模块采用RTP/RTCP协议进行音视频数据的传输;音视频解码使用FFmpeg进行数据解码;告警管理模块将突发故障通过告警短信提示给用户;交互控制单元实现用户对监控前端的管理。各个模块独立设计,降低了模块间的耦合,提高了系统的健壮性。
测试结果表明,在Windows Mobile智能手机平台上,利用多线程技术,采用RTP数据缓冲与FFmpeg解码并发执行的策略,系统具有较好的实时性和稳定性,满足了移动监控系统的应用需求。
Fixed terminals are usually adopted in traditional audio and video monitoring systems, which are complex in device deployment, system configuration and maintenance, and lack of flexibility. In recent years, wireless network and streaming media technology are developed, which provide a favorable support to the wireless network based media application system exploitation. Meanwhile, the continuous improvement of the mobile terminal processor provides a powerful computing and multimedia processing abilities. Those above lay a foundation for the rise of mobile audio and video monitoring. A mobile audio and video monitoring can ensure the terminal access the monitoring data server easily and flexibility anytime, anywhere.
This paper proposed a mobile audio and video monitoring terminal design strategy for smart phone based on Windows Mobile system combined with traditional audio and video monitoring system with mobile network streaming technology. Theories closely related to this subject such as mobile terminal operating system, wireless communication network, MPEG-4 encoding and decoding standard and streaming communication technology are introduced firstly. Then the mobile monitoring system framework is described, and the function of related structure is analyzed. On these basis, the mobile video monitoring client software is designed and implemented, here, we use a modular design approach, the whole systems contains four parts, including network receiving module, audio and video decoding display module, alarm management module and the interactive control unit. The network receiving module communicate the audio and video data in RTP/TRCP protocol, the audio and video decoding module decoding the data in FFmpeg, the alarming management module prompt the user the catastrophic failure by alarm message, the interaction control unit achieve the user’s management to the front of the monitor. Each module designed independently, which reduced the coupling between modules, and improved the robustness of the system.
The testing results show that in the Windows Mobile smart phone platform, the system has a good real-time performance and stability with the multi-threading technology, and strategy with RTP data buffer and FFmpeg decoder execute simultaneously, which meet the application requirements of mobile monitoring system.
引文
[1]薛文通,宋建社,袁礼海.图像压缩技术的现状与发展.北京:计算机工程与应用,2003. 65~67
[2]郎学伟.基于MPEG-4的嵌入式数字视频监控系统研究和设计: [学位论文].北京:北京交通大学,2007
[3]孙立新,尤肖虎,张萍.第三代移动通信技术.北京:人民邮电出版社,2003. 23~43
[4]杨丰盛. Android应用开发揭秘.北京:机械工业出版社,2010. 1~8
[5]和凌志,郭世平.手机软件平台架构解析.北京:电子工业出版社,2009. 21~24
[6] R.J.(Bud)Bates著.朱洪波,沈越泓,蔡跃明,程崇虎译.通用分组无线业务(GPRS)技术与应用.北京人民邮电出版社,2004. 33~66
[7]赵欣.基于GPRS的无线数据传输系统的研究: [学位论文].哈尔滨:哈尔滨理工大学, 2008
[8] Xavier Lagrange等著.顾肇基译. GSM网络与GPRS.北京:电子工业大学出版社,2002. 23~145
[9] ISO/IEC. IEEE std.802.11a Higher-Speed Physical Layer Extension in the 5GHz Band[S]. New York:The institute of Electrical and Electronics Engineers,1999
[10] ISO/IEC.IEEE std.802.11b Higher-Speed Physical Layer Extension in the 2.4GHz Band[S]. New York: The institute of Electrical and Electronics Engineers,1999
[11] ISO/IEC.IEEE Std.802.11g Further Higher Data Rate Extension in the 2.4 GHz Band[S]. New York: The institute of Electrical and Electronics Engineers,2006
[12] IEEE Standards Board.802 part 11:Wireless LAN Medium Access Control(MAC)and Physical Layer(PHY)specifications.IEEE Standard 802.11[S].1999
[13] MPE-4 requirements. Version8. ISO/IEC/JTCI/SC29/WGII,N2322. Dublin,Ireland. 1998,12~23
[14]聂家发.关于802.11协议的研究: [学位论文].哈尔滨:哈尔滨工程大学,2004
[15]刘峰.视频图像编码技术及国标标准.北京:北京邮电大学出版社,2005. 203~214
[16] ISO/IEC JTC1/SC29/WG11 N4668,Overview of the MPEG-4 standard ,Rob Koenen , Fernando Pereira,2002
[17]刘达,毛加轩. MPEG-4视频编码核心思想及技术研究.北京:中国数据通信. 2004年01期. 102~108
[18]李双阳. MPEG-4视频传输关键技术研究: [学位论文].西安:西安电子科技大学,2009
[19]杨瑞亚.基于RTP的MPEG-4封装技术研究与设计: [学位论文].广州:暨南大学,2006
[20]李华.网络视频监控系统客户端视音频软件的设计与实现: [学位论文].武汉:华中科技大学,2007
[21] Thomas Steven. Streaming Video Over Variable Bit-Rate Wireless Channels. IEEE Transactions on Multimedia,2004,268~277
[22]龚正虎.现代TCP/IP网络原理与技术.北京:国防工业出版社,2002. 32
[23] H.Schulzrinne,S.Casner,R.Frederiek. RFC3550:“RTP:Real-time TransPortProtocol”, IETF,2003
[24] H.Schulzrinne,S.Casner. RFC3551:“RTCP:Real一timeTransPortContro Protocol”,IETF,2003
[25]吴乐南.多媒体及其相关技术的原理与技术.南京:东南大学出版社,1996. 46
[26]夏定元.多媒体通信——原理、技术与应用.武汉:华中科技大学,2010. 99~131
[27] Jon Postel. User Datagram Protocol. IETF RFC 768, 1980
[28] H.Schulzrinne. RTP: A Transport Protocol for Real-Time Applications. IETF RFC 1889,1996
[29] W.Richard Stevens.范建华,胥光辉等译. TCP/IP详解.北京:机械工业出版社,2005. 23~49
[30]李燕灵,马瑞芳,左力.基于RTP/RTCP的实时视频数据传输模型及实现.微电子学与计算机,2005,22(8):138~140
[31]宋波涛.智能视频监控系统的设计与实现: [学位论文].长春,吉林大学,2009
[32] ISO/IEC International Standard 13818-7. Generic Coding of MovingPictures and Associated Audio Information-Part 7:Advanced Audio Coding,1997
[33]吴炜. hitemet上连续媒体的同步技术研究: [学位论文].西安,西安电子科技大学2005
[34]裴昌辛,刘乃安,杜武林.电视原理与现代电视系统.西安:西安电子科技大出版社,1997. 2
[2]郎学伟.基于MPEG-4的嵌入式数字视频监控系统研究和设计: [学位论文].北京:北京交通大学,2007
[3]孙立新,尤肖虎,张萍.第三代移动通信技术.北京:人民邮电出版社,2003. 23~43
[4]杨丰盛. Android应用开发揭秘.北京:机械工业出版社,2010. 1~8
[5]和凌志,郭世平.手机软件平台架构解析.北京:电子工业出版社,2009. 21~24
[6] R.J.(Bud)Bates著.朱洪波,沈越泓,蔡跃明,程崇虎译.通用分组无线业务(GPRS)技术与应用.北京人民邮电出版社,2004. 33~66
[7]赵欣.基于GPRS的无线数据传输系统的研究: [学位论文].哈尔滨:哈尔滨理工大学, 2008
[8] Xavier Lagrange等著.顾肇基译. GSM网络与GPRS.北京:电子工业大学出版社,2002. 23~145
[9] ISO/IEC. IEEE std.802.11a Higher-Speed Physical Layer Extension in the 5GHz Band[S]. New York:The institute of Electrical and Electronics Engineers,1999
[10] ISO/IEC.IEEE std.802.11b Higher-Speed Physical Layer Extension in the 2.4GHz Band[S]. New York: The institute of Electrical and Electronics Engineers,1999
[11] ISO/IEC.IEEE Std.802.11g Further Higher Data Rate Extension in the 2.4 GHz Band[S]. New York: The institute of Electrical and Electronics Engineers,2006
[12] IEEE Standards Board.802 part 11:Wireless LAN Medium Access Control(MAC)and Physical Layer(PHY)specifications.IEEE Standard 802.11[S].1999
[13] MPE-4 requirements. Version8. ISO/IEC/JTCI/SC29/WGII,N2322. Dublin,Ireland. 1998,12~23
[14]聂家发.关于802.11协议的研究: [学位论文].哈尔滨:哈尔滨工程大学,2004
[15]刘峰.视频图像编码技术及国标标准.北京:北京邮电大学出版社,2005. 203~214
[16] ISO/IEC JTC1/SC29/WG11 N4668,Overview of the MPEG-4 standard ,Rob Koenen , Fernando Pereira,2002
[17]刘达,毛加轩. MPEG-4视频编码核心思想及技术研究.北京:中国数据通信. 2004年01期. 102~108
[18]李双阳. MPEG-4视频传输关键技术研究: [学位论文].西安:西安电子科技大学,2009
[19]杨瑞亚.基于RTP的MPEG-4封装技术研究与设计: [学位论文].广州:暨南大学,2006
[20]李华.网络视频监控系统客户端视音频软件的设计与实现: [学位论文].武汉:华中科技大学,2007
[21] Thomas Steven. Streaming Video Over Variable Bit-Rate Wireless Channels. IEEE Transactions on Multimedia,2004,268~277
[22]龚正虎.现代TCP/IP网络原理与技术.北京:国防工业出版社,2002. 32
[23] H.Schulzrinne,S.Casner,R.Frederiek. RFC3550:“RTP:Real-time TransPortProtocol”, IETF,2003
[24] H.Schulzrinne,S.Casner. RFC3551:“RTCP:Real一timeTransPortContro Protocol”,IETF,2003
[25]吴乐南.多媒体及其相关技术的原理与技术.南京:东南大学出版社,1996. 46
[26]夏定元.多媒体通信——原理、技术与应用.武汉:华中科技大学,2010. 99~131
[27] Jon Postel. User Datagram Protocol. IETF RFC 768, 1980
[28] H.Schulzrinne. RTP: A Transport Protocol for Real-Time Applications. IETF RFC 1889,1996
[29] W.Richard Stevens.范建华,胥光辉等译. TCP/IP详解.北京:机械工业出版社,2005. 23~49
[30]李燕灵,马瑞芳,左力.基于RTP/RTCP的实时视频数据传输模型及实现.微电子学与计算机,2005,22(8):138~140
[31]宋波涛.智能视频监控系统的设计与实现: [学位论文].长春,吉林大学,2009
[32] ISO/IEC International Standard 13818-7. Generic Coding of MovingPictures and Associated Audio Information-Part 7:Advanced Audio Coding,1997
[33]吴炜. hitemet上连续媒体的同步技术研究: [学位论文].西安,西安电子科技大学2005
[34]裴昌辛,刘乃安,杜武林.电视原理与现代电视系统.西安:西安电子科技大出版社,1997. 2
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