Research And Design Multi-channel Monitoring System Based On DM8168

The rapid development in the field of computer technology led to the rapid development of theentire video monitoring industry. In this thesis, we designed and achieved a multi-channel videomonitoring system based on actual demand. The hardware platform in this system is based onTMS320DM8168processor, and the software platform is based on embedded Linux operatingsystem. The system has advantages in many aspects such as stability and reliability. This thesis ismainly about the following aspects:(1) It analysed the related theory knowledge in the process of the development of the videomonitoring system. It includes audio and video codec standard、streaming media transfer protocol、packet technology of the audio and video data and McFW software architecture.(2) It introduced the overall design scheme of the video monitoring system from aspects ofhardware and software. The hardware platform is based on the DaVinci TMS320DM8168multi-core processor. The software platform is based on the embedded Linux operating system andTI McFW software framework, at the same time used open source RTSP server Live555to realizenetwork transmission.(3) It built DM8168embedded application software development environment, including thebuild of host (PC) end and target board (DM8168development platform) development environment.PC end includes installing of the NFS, TFTP services, cross compilation tools, as well as theDM8168Development Kit under PC’s Linux system. Target development environment’s buildincludes uboot cropping and compilation, cropping of the Linux kernel and compilation andproduction of root file system. The building of target board includes cutting and compiling of ubootand linux kernel and realiztion of root file system.(4) It designed and realized a multi-channel video monitoring system software on the serverside，mainly included the software design of video acquisition module, video coding module, videodisplay module, video storage module and network transmission module. It realized real-timedisplay, video local hard disk storage and network transmission function.(5) It also designed and realized a multi-channel video monitoring system software on theclient side, mainly realized remote control、live preview、multi-channel switch as well as OSDcharacter overlap display of the video monitoring system. The client software inside included RTSPinteraction module、RTP data receiving module、video decoding module and display module.(6) It built video monitoring system testing environment, and did respective test on the serverside and client side of the software. The server side mainly tested performance like the real-time、 code and compression as well as network transmission. The client side mainly tested live previewand time delay. Test results showed that the video monitoring system used in this system had goodlocal real-time preview performance, and the network transmission time delay was small.