The Design And Implementation Of Intelligent Vehicle Management System Based GSM

With the rapid development of China's national economy, China's growing volume of vehicles there, while also increasing road traffic accidents. Traditional management has been unable to carry out effective management of vehicles, passenger vehicles, speeding, overloading, driving the phenomenon of repeated cross the line, the safety of the passengers caused great risk.This intelligent management system of the vehicle research and development, using GPS global satellite positioning system to obtain the current vehicle position, speed, direction information, the operating state of the driver records, you can record 1 minute intervals for the history of the vehicle traveling data You can also sample the speed of 0.2 seconds, a detailed record of every stop before driving status and driving track, through the IC card, serial communication port, USB port to download the historical data, computer management software through intelligent management of the vehicle.GSM communication module for vehicles equipped with intelligent management device can achieve real-time monitoring of vehicles, the control center through the GSM module, vehicles can understand the current operating conditions, a nationwide dynamic real-time management and scheduling, and low cost. My specific work are summarized as follows:(1) Design intelligent vehicle management instrument hardware schematic. Machine by the CPU, data memory expansion circuit, IC card / USB interface circuit, GPS receiver circuits, opto-isolated input and output circuits, digital camera control circuit, the indicator light, buzzer and power components. Which, CPU use Atmel's AT89C55 microcontroller, the memory used by DALLAS produced DS1230, using the U.S. GPS satellite positioning system. (2) Design and development of intelligent vehicle communication system management apparatus, the use of SIEMENS2118 phones for data transfer, the user can access it AT command set. Introduced the SMS PDU data format, introduced in English, Chinese encoding to send and receive short messages; short message deleted; to go, has sent a short message read.(3) Design and development of the two readers, the serial interface reader, parallel port reader. USB data transfer, and solutions designed, USB interface chip is used in the company's USB-HOST CYPRESS interface chip SL811, the file system is FAT16 format.(4) With ESD protection design for electromagnetic compatibility environment for automotive electronics design; design switching power supply circuit, DC / DC power supply circuit to prevent interference from power supply; and introduces the circuit board design should pay attention to the interference problem.(5) Intelligent Vehicle Management System software design structure, select Microsoft Windows XP as the operating system, choose MapInfo's MAPX control space management system as the GIS software development platform, using the free database of Paradox table using Delphi 7.0 as a software development tools.(6) Design and development of intelligent vehicle management system software modules, including data acquisition module, track points, playback module, geographic information editing module, transportation, resource management module, the user information management module, statistics module, GPS / GSM module and records Instrument settings module. Database tables and the corresponding design and development.This system has the following characteristics:1) High reliability. Early data memory used in the design of doubt; and use a separate memory, the historical data stored vehicles; to greatly improve the capacity of main memory to use small, mobile, large-capacity memory devices.2) High accuracy. Using the U.S. GPS satellite positioning system positioning.3) Transmission distance. Modules can be achieved by GSMSMS global communications. 4) Easy maintenance. Maintenance of all mobile phone outlets throughout the various parts of the city, easy maintenance.5) The data transfer speed. Using USB transfer mode.6) The immunity to interference. Electromagnetic compatibility of automotive electronics, power supply and the circuit board design have carried out anti-jamming design.The software has many areas for improvement to be realized in future releases, and perfect.