嵌入式智能会议系统终端的设计与实现

发布时间：2019-06-15 21:26

【摘要】：随着当代信息技术的飞速发展，人们获取的信息量日益增多，对会议效率的追求越来越高，要求智能会议系统集成的功能越来越多。但是现有智能会议系统一般使用笔记本电脑作为会议终端，传输线缆繁多、交互性差、配套功能软件不完善。充分利用现有的无线局域网通信技术、日益成熟的嵌入式技术和人机交互技术设计一款无需布线、可移动、交互性强、功能完善、布局快捷方便的嵌入式会议系统终端具有很高的现实价值。本文以本地智能讨论会议系统为应用背景，以嵌入式系统作为智能会议系统终端的开发平台，设计并实现硬件平台，开发配套功能软件，制作出原理样机，并通过实验测试验证设计的合理性，为智能会议系统终端设计提供一种新的解决方案。以OMAP3530作为核心处理器，设计嵌入式智能会议系统终端，集成显示功能模块、音视频采集模块、网络通信模块、通用接口模块。利用Cadence软件设计硬件平台，仿真验证电路板设计的电磁兼容性、信号完整性。制作实验板，通过实验测试功能模块的可用性。在以上设计的嵌入式终端上集成现有超声红外定位装置，开发驱动程序获取定位数据。由超声红外定位技术出发，解析定位数据，设计并实现鼠标模拟、实时书写等人机交互功能，解决现有智能会议系统终端无法手写批注、笔式交互操作的问题。建立无线局域通信网，通过预设控制协议完成代表机远程控制主席机与主席机授权管理功能，，构建智能会议系统中端到端的大型交互系统。改变会议系统中“一方发言多方听”现象，完善会议系统中的跨平台高度交互，有效提高会议效率。在上述技术基础上，设计并实现人机交互、终端通信、会议签到和电子投票等功能软件，丰富完善现有智能会议系统功能。选择基于Socket接口开发嵌入式操作系统与桌面操作系统的跨平台TCP通信，建立主席机与代表机之间的TCP通信关系，在此基础上开发会议系统的签到和电子投票功能。制作原理样机，测试智能会议系统的功能软件。主要贡献如下： (1)提出智能会议系统终端集成超声红外定位的交互装置的解决方案，开发出主席机与代表机之间跨平台交互功能，建立智能会议系统中端到端大型交互系统。 (2)制作嵌入式智能会议系统终端原理样机，集成开发跨平台通信、人机交互、会议签到和电子投票功能，丰富完善现有智能会议系统功能。上述工作为本地智能讨论会议系统终端的设计提供一套完整的方案，通过集成人机交互设备，开发会议系统中主席机与代表机的跨平台交互功能，提升智能讨论会议系统的交互性能，提高会议效率。对智能讨论会议系统终端、跨平台通信系统、人机交互设备等产品的研究和开发具有一定的参考价值。
[Abstract]:With the rapid development of contemporary information technology, people obtain more and more information, and the pursuit of conference efficiency is higher and higher, which requires more and more functions of intelligent conference system integration. However, the existing intelligent conference system generally uses notebook computer as the conference terminal, the transmission cable is numerous, the interaction is poor, and the supporting function software is not perfect. Making full use of the existing wireless local area network communication technology, the increasingly mature embedded technology and human-computer interaction technology to design an embedded conference system terminal without wiring, movable, interactive, perfect function, fast and convenient layout has a high practical value. This paper takes the local intelligent discussion conference system as the application background, takes the embedded system as the development platform of the intelligent conference system terminal, designs and implements the hardware platform, develops the supporting function software, makes the principle prototype, and verifies the rationality of the design through the experiment test, and provides a new solution for the intelligent conference system terminal design. With OMAP3530 as the core processor, the embedded intelligent conference system terminal is designed, which integrates display function module, audio and video capture module, network communication module and general interface module. The hardware platform is designed by Cadence software, and the electromagnetic compatibility and signal integrity of circuit board design are verified by simulation. Make the experimental board, through the experiment to test the availability of functional modules. The existing ultrasonic infrared positioning device is integrated on the embedded terminal designed above, and the driver is developed to obtain the positioning data. Based on the ultrasonic infrared positioning technology, the positioning data are analyzed, and the mouse simulation, real-time writing and other human-computer interaction functions are designed and realized to solve the problem that the existing intelligent conference system terminals can not write comments and pen interaction. The wireless local area communication network is established, and the remote control podium and podium authorization management function are completed by preset control protocol, and the large end-to-end interactive system in intelligent conference system is constructed. Change the phenomenon of "one party speaking and listening to each other" in the conference system, perfect the cross-platform high interaction in the conference system, and effectively improve the efficiency of the meeting. On the basis of the above technology, the functional software such as human-computer interaction, terminal communication, conference check-in and electronic voting is designed and implemented, which enriches and perfects the functions of the existing intelligent conference system. The cross-platform TCP communication between embedded operating system and desktop operating system is developed based on Socket interface, and the TCP communication relationship between podium and representative computer is established. On this basis, the check-in and electronic voting functions of conference system are developed. Make the prototype and test the function software of intelligent conference system. The main contributions are as follows: (1) the solution of integrated ultrasonic infrared positioning interactive device for intelligent conference system terminal is proposed, the cross-platform interaction function between podium and representative machine is developed, and the end-to-end large interactive system in intelligent conference system is established. (2) make the terminal prototype of embedded intelligent conference system, integrate and develop the functions of cross-platform communication, human-computer interaction, conference check-in and electronic voting, enrich and perfect the functions of the existing intelligent conference system. The above work provides a complete scheme for the design of the terminal of the local intelligent discussion conference system. By integrating the human-computer interaction equipment, the cross-platform interaction function between the host and the representative machine in the conference system is developed, so as to improve the interaction performance of the intelligent discussion conference system and improve the meeting efficiency. It has certain reference value for the research and development of intelligent discussion conference system terminal, cross-platform communication system, human-computer interaction equipment and so on.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP368.1

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