Design And Implementation Of Internet Of Vehicles Terminal System Based On ARM/Linux

Internet of vehicles terminal systems(IOVTS)is an important part of IOVS(Internet of Vehicles Systems).The main functions of IOVTS are collecting the real-time operational data of vehicles,realizing the collection,storage and transmission of all the work information including static and dynamic information of vehicles.The aim of IOVTS is to uniformly manage the vehicles,so as to reduce the traffic congestion by sending the collected vehicle information to the transportation center where the information is being comprehensively analyzed such as the cause analysis of traffic accident which can timely offer medical aid,offering relevant information after vehicle lost,offering limited-time rental car and so on.The existing IOVTS have many shortcomings and our country's IOVTS still stay on the stage of technical exploration.At present,mostly ITS tests and IOV conceptions are based on GPS plus GPRS technology.A small number of productions only can communicate between people and vehicles or vehicles and vehicles whose structure complicated and efficiency lowed.The key to solve the problems above is using mature Embedded technology,Sensor technology and sensor information integration technology,Internet technology,communication and application technology to realize a more salability,higher efficiency and better concurrency IOVTS.At the same time,these simplify the system structure,improve the operation efficiency and save the costs.Based on the analysis above,our literature put forward the Internet of Vehicles Terminal Systems technical solution which based on ARM/Linux.This topic comes from the project of communications department of Heilongjiang province.At first,this article use the embedded technology design and research on embedded application of collection of vehicle information,this way choose Forlinx Company OK6410 development board as a platform,choose Linux as the software platform and combine with the muti-threaded programming technology based on Linux to realize the collection,analysis and transmission of vehicle CAN information and GPS information.In terms of vehicle CAN information collection,we use SAE J1939 protocol as an application layer protocol of CAN bus communication,Using Socket CAN interface of Linux for application development,It is similar to the TCP/IP protocol;In addition,cyclery storing the collected data in the SD card by file programming and displayingthe graphical interface based on Qt.In terms of network transmission,we use TCP/IP protocol that provides reliable communication to the client and server.By connecting 3G network with data from server can we transmit vehicle data to the server more convenient and fast.Lastly,establishing a database on the server,making sure the data required be extracted,processed and written to the database timely,and building vehicle information query website on the server side,So as to relevant personnel can monitor vehicle parameters and location information conveniently after the website login page authentication.In the overall test phase,we also make a design about a vehicle CAN bus simulated environment based on SAE J1939.By actually run the test,in our literature,the simulation of vehicle CAN bus system,IOVTS and remote monitoring system stability of vehicle has reached the target of the project.