【正文】 nal based on ARM Abstract The video monitoring are greatly concerned about and rapidly developed in the particular context of the huge promotion of microelectronics technology, puter technology, multimedia technology and work technology, and the promotion of information technology of the whole society. The applications of video monitoring are no longer confined to the general security of public places. Production and operation monitoring, intelligent road traffic management and home security monitoring have been widely used. The development of wireless munication technology, especially the third generation mobile munication technology, is more flexible and convenient for video monitoring. Meanwhile, the current monitoring system has been developed to the stage of intelligence under the boost of the modern digital signal processing technology and artificial intelligence technology. An ARMbased embedded control terminal is designed based on this application background. Monitoring Terminal designed mainly contains four ponents, they are video capture module, the video processing module, the central control module and the wireless transmission modules, respectively. The overall system designed uses the ARM combined with the special video processing chip. The task of work and process management can be achieved by ARM. The pression of the raw data can be completed by the video chip. Data exchanges can be pleted by monitoring terminal through the 3G work and backstage control center, which basically adapted to the basic requirements of modern society on the video monitor. The work and innovation o 基于 ARM 的嵌入式監(jiān)控終端的設(shè)計(jì)與實(shí)現(xiàn) 6 f this paper are mainly as follows: (1) By analyzing the system functions, the choice of the overall program for embedded video monitoring terminal is described. The choice of system architecture using a bination of ARM and video processing chip, the performance of the system has greatly improved by changing traditional data processing mode for singlechip. A higher pression ratio of pression scheme is used to encode, the quality of image transmitted is much better and smaller amount of data pared to the previous MPEG program. The advantages of the terminal are more prominent in the 3G era of traffic accounting. In working, the 3G way work is used, which is more flexible, easier to expand and upgrade pared to the previous monitoring terminals. (2) The acquisition module, the video processing module, the central control module andhe wireless transmission modules and PCI munication interface circuit are designed based on the chip selected. Then the schematic and physical graphs of the monitoring terminal are given. Technical difficulties encountered in the PCB design and inductions are summarized according to practical problems encountered in the past experience and the process of terminal design. (3) A software development platform is built based on the SL3512, and the detail steps and processes are given. In the choice of boot loader, the SLboot depending on the SL3512 design is used. Its start and running process is described in detail. (4) The development process and the basic principles of embedded terminal driver are prehensively proposed, which pensate for the application design deficiencies of the previously embedded terminal to a certain extent. The development and load of the ARM processor and video processing PCI driver module are achieved. (5) SDK realtime video demanded and dynamic monitoring module based on the FH8735 software tool are pletely developed. To a certain extent, it pensates for the blank of the domestic Video Monitoring Terminal on the dynamic monitoring and occlusion alarm function, which meet the basic contemporary society of intelligent embedded systems requirements. The wireless transmission module, the data link layer, work layer protocols and the basic principles are studied in depth, and specific i 基于 ARM 的嵌入式監(jiān)控終端的設(shè)計(jì)與實(shí)現(xiàn) 7 mplementations are given. It has a guiding significance for the development of embedded systems. (6) Finally, the main application areas are summarized and future research direction is outlooked of the monitoring terminal, and supplement and improve is proposed to the further need. Keywords： monitoring terminal、 3G、 ARM、 Linux、 PCI、 socket Classification、TN911 目 錄 第一章 緒論 ......................................................... 8 視頻監(jiān)控系統(tǒng)的發(fā)展歷程 ....................................... 8 嵌入式監(jiān)控系統(tǒng)的發(fā)展趨勢(shì) .................................... 10 第二章 系統(tǒng)整體方案設(shè)計(jì) ........................................... 12 系統(tǒng)整體架構(gòu) .............................................. 12 硬件整體架構(gòu)的選擇 ........................................ 13 主流微處理器 ......................................... 13 ARM 微處理器的優(yōu)點(diǎn) ................................... 14 本終端中央架構(gòu) ....................................... 15 操作系統(tǒng)的選擇 .............................................. 16 傳輸網(wǎng)絡(luò)的選擇 ............................................ 19 視頻壓縮標(biāo)準(zhǔn)的選擇 ........................................ 21 第三章 嵌入式終端硬件模塊的設(shè)計(jì) ................................... 24 整體架構(gòu) .................................................... 24 視頻采集模塊 .............................................. 25 視頻處理模塊 .............................................. 26 中心控制模塊 .............................................. 28 PCI 接口電路設(shè)計(jì) ........................................... 29 電源模塊 .................................................... 31 第四章 終端軟件平臺(tái)的構(gòu)建 ......................................... 33 Linux 嵌入式開(kāi)發(fā)簡(jiǎn)介 ....................................... 33 SL3512Linux 開(kāi)發(fā)環(huán)境的搭建 ................................. 33 控制臺(tái)軟件的選擇 .......................................... 34 Boot Loader 簡(jiǎn)介 .......................................... 34 根文件系統(tǒng) ...........................................