Vehicle Communication System Based On Motor Vehicle Automated Road Test System Research And Development

To study Automobile Driver Road Tests System plays an important role in reducing test process in human factor, enhancing the accuracy, the objectivity and the fairness in tests process, as well as ceases traffic danger aspects. This paper is aimed at Vehicle communication System of Automobile Driver Road Tests System. The system is the application automatic vehicles localization technology, the computer technology and the modern communication high tech system ensemble. At present may use the localization technology are extremely many, including GPS, DR and the radiolocation, they respectively has the characteristic; The communication way also is same, at present may select the communication way includes: The radio colony communication, the GSM communication, China Mobile GPRS and China Unicorn's CDMA. How selects any type the localization technology and the communication technology as well as in these technology practical application Vehicle communication System is the present paper main research content. In positioning aspect, has analyzed each kind of locate mode precision and the applicable scope as well as the use cost according to the communication objective parameter, the embedded vehicle positioning system is designed by using signal chip and multiple GPS receiver. In communication aspect, mainly "timeliness requests high according to the vehicle communication System vehicles monitoring and the dispatch system, the data quantity quite is small" the characteristic selected GPRS (General Packet Radio Service) the general wireless grouping service way to take this system the main communication way and wireless dada communication system is designed by using industrial GPRS . Every model mentioned above can communicate each other or with PC through UART to realize positioning, wireless communication etc. This paper describes the structures and functions of the vehicle device component and discusses the realization of concrete hardware and software in detail. At last this paper processes the experiment results and gives the conclusion and prospects.