基于ARM的嵌入式监控终端的设计与实现

发布时间：2018-06-22 05:55

本文选题：监控终端 + 第三代移动通信　；参考：《山东师范大学》2012年硕士论文

【摘要】：在微电子技术、计算机技术、多媒体技术和网络技术的巨大推动和整个社会信息化程度提升的特殊背景下，视频监控获得了极大地关注和迅猛的发展。视频监控的应用范围不再局限在一般的公共场所安全防范，企业生产经营监控、道路交通智能化管理、家庭安全监控等新的领域也受到了广泛的应用。无线通信技术特别是第三代移动通信技术的发展更是为视频监控提供了更加灵活方便的组网方式。同时在现代数字信号处理技术和人工智能技术的巨大推动下，目前的监控系统已经发展到了智能化的阶段。本文正是基于这种应用背景，设计了一款基于ARM的嵌入式监控终端。本文所设计的监控终端主要有以下部分组成：视频采集模块，视频处理模块，中心控制模块，无线传输模块组成。系统整体设计方案采用ARM与专用视频处理芯片相结合，ARM完成网络管理和进程管理等任务，，而视频芯片完成原始数据的H.264压缩。监控终端通过3G网络与后台控制中心完成数据交互，基本适应了现代社会对视频监控的基本要求。本论文主要完成的工作和创新点如下： 1.通过对系统功能的分析，介绍了嵌入式视频监控终端整体方案的选择，在系统硬件架构选择上采用ARM与视频处理芯片相结合的方式，改变了传统的单芯片处理数据的模式，大大提高了系统的性能。在编码方式上，采用了压缩比率更高的H.264压缩方案，传输的图像相比较以前的MPEG方案质量更加的好，并且数据量很小，在以流量计费的3G时代，更加凸显了本终端的优势。在组网方式上，采用3G方式进行组网，相比较以前的监控终端，在组网方式上更加的灵活方便，更加容易扩展和升级。 2.针对本文选择的芯片，完成了采集模块，视频处理模块，中央控制模块和无线传输模块以及PCI通信接口的电路设计，给出了本文所设计的监控终端的原理图和实物图。并且根据以往经验和本终端设计遇到的实际问题，对PCB设计中可能遇到的技术难点进行了总结和归纳。 3.构建了基于SL3512的软件开发平台，对主要的步骤和流程进行了全面的阐述，在引导程序boot loader的选择上，创新性的采用了依赖于SL3512设计的SLboot，并且对它的启动和运行过程进行了细致的说明。 4.对嵌入式终端驱动程序的开发流程和基本原理进行了全面的阐述，在一定程度上弥补了以前嵌入式终端设计的不足，针对本终端完成了ARM处理器与视频视频处理模块通信的PCI驱动程序的开发和加载。 5.完成了基于FH8735软件工具开发包SDK实时视频点播和动态监测等定制化模块的开发，在一定程度上弥补了国内视频监控终端对动态监测和遮挡报警等重要功能的空白，基本满足了当代社会对嵌入式系统智能化的要求。对无线传输模块的数据链路层，网络层所需要的协议和基本原理进行了深入的研究，并且给出了具体的实现方案，对于嵌入式系统的开发具有一定的指导意义。 6.最后对本文监控终端所涉及的主要应用领域和未来的研究方向进行总结和展望，对进一步需要补充和完善的地方进行了说明。
[Abstract]:Under the special background of microelectronic technology, computer technology, multimedia technology and network technology and the promotion of the whole social information level, video surveillance has gained great attention and rapid development. The application scope of video surveillance is no longer limited to general public place security prevention, enterprise production and management monitoring, road The new fields such as traffic intelligent management and family safety monitoring have also been widely applied. The development of wireless communication technology, especially the third generation mobile communication technology, is more flexible and convenient for video surveillance. At the same time, the modern digital signal processing technology and artificial intelligence technology are greatly promoted. The monitoring system has developed to the intelligent stage. Based on this application background, this paper designs an embedded monitoring terminal based on ARM.
The monitoring terminal designed in this paper consists of the following parts: video acquisition module, video processing module, central control module and wireless transmission module. The overall design scheme of the system is combined with ARM and special video processing chip, ARM completes network management and process management tasks, while video chip completes the original data H.264 The data interaction between the 3G network and the backstage control center is completed by the monitoring terminal, which basically meets the basic requirements of the modern society for video monitoring. The main work and innovation of this paper are as follows:
1. through the analysis of the function of the system, the selection of the overall scheme of the embedded video monitoring terminal is introduced. In the selection of the system hardware architecture, the mode of combining the ARM with the video processing chip is adopted to change the traditional single chip processing data mode, which greatly improves the system's ability. In the coding mode, the compression ratio is higher. H.264 compression scheme, compared with the previous MPEG scheme, the quality of the previous scheme is better, and the amount of data is very small. In the 3G age of traffic charging, the advantage of this terminal is more prominent. In the networking mode, the network is organized by the way of 3G, compared with the previous monitoring terminal, it is more flexible, convenient and easier to expand in the networking mode. Exhibition and upgrade.
2. for the chip selected in this paper, the design of the acquisition module, video processing module, the central control module, the wireless transmission module and the PCI communication interface are completed. The schematic diagram and the physical map of the monitoring terminal designed in this paper are given. And according to the previous experience and the actual problems encountered in the design of the terminal, it is possible to meet the PCB design. The technical difficulties are summarized and summarized.
3. the software development platform based on SL3512 is constructed, and the main steps and processes are fully expounded. In the selection of boot loader of the guide program, the SLboot which depends on the design of SL3512 is innovatively adopted, and the process of its starting and running is carefully explained.
4. the development process and basic principle of the embedded terminal driver are fully expounded. To a certain extent, the shortcomings of the previous embedded terminal design are made up. The development and loading of the PCI driver for the ARM processor and video video processing module are completed for this terminal.
5. the development of SDK real-time video on demand and dynamic monitoring modules based on FH8735 software tool development package is completed. To a certain extent, it can make up the blank of the important functions such as dynamic monitoring and occluding alarm in domestic video monitoring terminal, and basically meet the requirements of the contemporary society on the intellectualization of the embedded system. The data link layer, the protocol and the basic principle of the network layer are deeply studied, and the concrete implementation scheme is given, which has certain guiding significance for the development of the embedded system.
6. finally, the main application fields and future research directions of the monitoring terminal are summarized and prospected, and the further needs to be supplemented and perfected are explained.
【学位授予单位】：山东师范大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP277

【参考文献】