Design And Application Of Mobile Monitoring Terminal Software Based On Windows Mobile

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.