Based On Design And Research Of Beidou And GPRS Vehicle Terminal

Vehicle information terminal(VDA)is now a very advanced intelligent transportation technology,it can help us to optimize road traffic and vehicle management.It USES a variety of advanced technology such as GPS,GPRS wireless positioning,CAN bus technology and embedded technology,the combination of vehicle positioning,car navigation,the optimal path optimization,vehicle condition monitoring and entertainment,etc.,to provide users with high-quality cost-effective services,convenient for the user,to the user in the course of the journey to bring more entertainment and convenience,so completely worth have such a product.Beidou satellite navigation system is China's independent development,independent global satellite navigation system,if put the beidou navigation technology into the car terminal,implements the cohesion of the big dipper industry chain,this will increase the impact of the beidou satellite,promote the reform of the relevant industries,has a deeper meaning to our country.Although the beidou satellite navigation system is still in development stage,but some functionality is completely can use,just some functions still imperfect,the scope of the positioning will not be able to achieve global positioning.Although the positioning precision of beidou can compare a shoulder completely GPS positioning,but in order to achieve the global positioning,still will both together,realize the precise positioning of worldwide.Design: the purpose of this paper USES the advanced sensing technology,car audio,navigation,the vehicle positioning monitoring,phone,wireless Internet access,integration for the integration of facilities,such as running recorder(referred to as the vehicle information terminal).In embedded controller for the processor,by ECU receives the vehicle state information,and wireless communication way or CAN bus and auto control platform of information interaction;Use beidou GPS + base + cooperative navigation and positioning,vehicle information monitoring,vehicle anti-theft alarm,vehicle scheduling command,and other functions.Requires support for GSM/CDMA network communication at a high speed.Results and conclusion: the design of a belt of beidou and GPS navigation of dual-mode vehicle terminal,and extended beidou module,the CAN module and GPRS module,etc.,and transplant the operating system,realized the function of positioning and CAN communication through GPRS wireless communication to realize the information sharing.