Vehicle Traveling Data Recorder Base On BDS And GPRS

When people improve the quality of life,owning a car will become a common thing.So at present in our country automobile production and sales increased year by year,this will cause the pressure to the entire traffic,the probability of the occurrence of the accident will also increase.Therefore,in May 11,2012,the National Standards Committee issued the GB/T19056-2012 "car travel recorder".In February 28,2011 by the Ministry of transport issued the industry standard JT/T794 "road transport vehicle satellite positioning system vehicle terminal technical requirements".The main function of the traveling data recorder is to record the signal,such as mileage,time,speed and so on,which can be stored and read out the vehicle information recording device.Traffic recorder can be bound to limit the driver’s speed,not by the provisions of the road driving,overtime driving and other acts.Industry standards to increase the GPRS networking capabilities and positioning requirements.The application of the national Ministry of communications in the active promotion of the Beidou system and related industrialization.Therefore,we choose the positioning function of China’s independent research and development of the Beidou system.The main function of this project is to collect,record and keep the vehicle information in the course of driving,so that the data is not lost.At the same time,through the GPRS network and fixed server communication,to achieve data exchange,so as to achieve the car networking.This topic uses the COTEX M4 kernel to fly think Carle MCU,transplanted the MQX operating system,increase the FAT32 file system,you can use U disk and SD card.According to the requirements of the relevant standards,the vehicle information collection circuit,the Beidou Positioning circuit and the network connection hardware circuit are designed.The vehicle information can be obtained through a micro thermal printer or a liquid crystal screen.In the LCD screen interface design contains the main interface and menu interface,the main interface is mainly to display the positioning information,networking status,time and other information,the menu interface can query and set up a number of vehicle information,etc..In the system testing,the first module test,and finally the whole test.In the test of the whole system,the electromagnetic compatibility test and functional test on the software are carried out.The feasibility and stability of the system are verified.