嵌入式多媒体传感终端设备的设计与实现

发布时间：2018-07-07 23:39

本文选题：嵌入式系统 + ZigBee　；参考：《南京邮电大学》2013年硕士论文

【摘要】：近年来，随着世界各国公共安全和环境问题日趋严峻，无线传感网络技术和视频监控技术在地铁、机场、学校、医院、企业和军事设施等场所得到了广泛的应用。为了满足人们能够方便的通过智能终端或者个人电脑随时随地查看远程环境和场景信息的应用要求，本文将无线传感网络技术和音视频监控技术相结合，设计并实现了基于TMS320DM368的嵌入式多媒体传感终端设备。首先，根据传感终端设备的功能和性能要求，将系统分为环境物理信息监测与报警子系统、音视频采集与播放子系统、多媒体数据处理与传输子系统，并在广泛调研的基础上，给出了基于TMS320DM368的嵌入式多媒体传感终端设备的总体设计方案及各个子系统的详细设计方案。其次，设计并实现了环境物理信息监测与报警子系统。该子系统从功能上分为基于ZigBee网络的环境物理信息监测模块、基于TC37的异常报警模块和基于MSP430F169单片机的控制模块三个部分，分别给出了上述模块的硬件电路设计和软件实现。第三，设计并实现了音视频采集与播放子系统。建立了基于TMS320DM368嵌入式多媒体处理器的Linux开发环境，并对Linux内核进行了合理的配置，完成了音视频信息采集与播放单元的硬件电路设计，，同时编写了音视频数据采集的驱动程序及应用程序，完成了音视频信息的采集与播放功能。第四，实现了多媒体数据处理与传输子系统。实现了环境物理信息的数据格式转换，完成了音视频数据的压缩编码，并建立了基于Live555的数据码流实时传送模块和基于Web服务器的实时传输模块，完成了多媒体数据的无线发送和实时传输功能。最后，本文对系统软件和硬件进行了联合测试，测试结果表明本系统可以很好地完成对环境信息的数据监测和实时传输，且具有较好的可靠性、同步性和实时性，能够满足项目性能指标和用户需求。
[Abstract]:In recent years, with the increasingly serious public safety and environmental problems around the world, wireless sensor network technology and video surveillance technology in subway, airport, schools, hospitals, enterprises and military facilities and other places have been widely used. In order to meet the application requirements of people viewing remote environment and scene information easily through intelligent terminal or personal computer, this paper combines wireless sensor network technology with audio and video monitoring technology. The embedded multimedia sensor terminal equipment based on TMS320DM368 is designed and implemented. First of all, according to the function and performance requirements of the sensor terminal, the system is divided into environmental physical information monitoring and alarm subsystem, audio and video acquisition and playback subsystem, multimedia data processing and transmission subsystem, and on the basis of extensive investigation. The overall design scheme of embedded multimedia sensor terminal equipment based on TMS320DM368 and the detailed design scheme of each subsystem are given. Secondly, the environmental physical information monitoring and alarm subsystem is designed and implemented. The subsystem is divided into three parts: the environment physical information monitoring module based on ZigBee network, the abnormal alarm module based on TC37 and the control module based on MSP430F169. The hardware circuit design and software implementation of the above modules are given respectively. Thirdly, the audio and video capture and play subsystem is designed and implemented. The Linux development environment based on TMS320DM368 embedded multimedia processor is established, the Linux kernel is configured reasonably, and the hardware circuit of audio and video information acquisition and playback unit is designed. At the same time, the driver and application of audio and video data acquisition are written, and the function of collecting and playing audio and video information is completed. Fourthly, the multimedia data processing and transmission subsystem is realized. The data format conversion of environmental physical information is realized, the compression and coding of audio and video data is completed, and the real time transmission module of data stream based on Live555 and the real time transmission module based on Web server are established. The functions of wireless transmission and real-time transmission of multimedia data are completed. Finally, the software and hardware of the system are tested in this paper. The test results show that the system can monitor and transmit the environmental information in real time, and it has good reliability, synchronization and real-time performance. Ability to meet project performance and user requirements.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP368.1;TN919.8

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