On-Board WiFi Server Based On ARM

With the rapid development of communication technology,there are many service platforms on the transport system.for example,the GPS positioning system that can provide location information for the passengers; the voice broadcast system that provide regarding matters related to passengers;advertisement service system that advertising different kinds of advertisement and other Service system. But the system function is single, limited resources, so there is considerable limitations on the services. therefore we need a high quality information service platform. With the passenger traffic increased year by year,buses, trains and other people more populated places on the demand of information service platform is also growing, and tedious journey time for passengers also urgently need a full of humanity, comprehensive information service platform, simple, easy to operate. With the rapid expansion in the mobile phone, PDA and other intelligent portable terminal makes some people need to be more suitable for communication.This system adopts the Cortex-A8 as processor, with WiFi as user connection way of design patterns. This paper analyzes the present situation of vehicle system development,introduces the 3G technology, WiFi technology and embedded technology, etc. Firstly introduces S5PV210 microprocessor and Linux operating system. Secondly, this paper introduces the 3G communication and WiFi communication technology, and carries on the description. Finally, the network transmission protocol are introduced. According to the requirements of on-board server and the actual demand,the scheme of selecting the hardware platform and module has proposed,with the same time,the scheme of the overall design of software has put forward.Cutting of the Linux operating system,transplanting related driver and the server,and each function module of software development were introduced in detail. Then introduces in detail the realization of playing video and audio, advertising, APP download browser program design based on LAMP architecture.Through the actual test, this system can be carried out many resources to browse at the same time, and 3G module can be normal communicatting, which ensure the vehicle terminal and the normal data communication and exchange ofthe cloud. This system is discussed, finally, the article puts forward some perfect solution of the system.