Design Of Image Acquisition And Transmission System For Mobile Terminal

In recent years,image acquisition and transmission system for mobile terminal has been widely applied,such as security monitoring,TV live broadcast,dangerous detection,Internet of Things,etc.With the rapid development of wireless network in China,especially the popularization of 4G network,the image acquisition and transmission system of mobile terminal will become a hot research area and will be applied in various fields of society.Image acquisition and transmission system would be designed and developed for a mobile terminal in this paper,which mainly uses embedded development board,USB camera,and 4G network communication module to build a image acquisition and transmission system for mobile terminal,and regards the Android application client as the mobile terminal receiving system.The solution of breaking through the bottleneck of the operator's LAN is using VPN agent.The main works of the thesis include the following aspects.1.Design the overall framework of the system.Firstly,it is primary to select some needful hardwares for the system,such as the development board,the camera,the 4G network communication module and so on.Secondly,it is a must to transplant the operating system into embedded board,include installing the cross compiler tools,amending and deploying the Linux kernel,and compiling to the mobile terminal operation.Finally,it is imperative to make the root file system.2.Design image acquisition and transmission system.First,the main program and associated subroutine are written in this paper,including part of image acquisition and section of image transmission.Then 4G dial-up Internet access is designed in the paper,including transplant dialing software and write dial-up scripts.Finally,the problem of external network access is studied and discussed,and the VPN server proxy is chosen as the best solution.3.Design a client of the Android application.The client is used to receive and play image data,mainly including designing user graphical interface,writing program,and testing and analyzing the whole system.