The Research And Design Of Automobile Guidance System Based On ARM Platform

The automobile guidance and the localization are in the whole world satellite positioning system (GPS, Global Positioning System) in the foundation develops a new technology. It is by the GPS positioning system, the electronic map, the embedded system is composed. The automobile guidance system receives the satellite signal which GPS transmits, obtains vehicles' immediate position, transmits through the GPS signal processing system gives CPU, coordinates on embedded system's electronic map again, vehicles process track display on display monitor. This article proposed one kind of entire liquid crystal's automobile guidance positioning system plan, take ARM the microprocessor as a core, transplants the embedded operating system, based on this draws up the electronic map, demonstrates the vehicles movement path. The main research content is as follows:Completed the vehicle to carry the guidance system overall concept the analysis and the design. Analyzed many kinds of inserting to decline processing the performance, the application and the price. Had determined take S3C44BOX as the core construction guidance system hardware platform solution, and has designed guidance system's overall frame.Completed the instrument system hardware platform design, including interface circuit's and so on memory system, correspondence main line, GPS module designs. According to the high speed figure electric circuit's design requirements, have realized on the double kneading board based on the ARM automobile guidance positioning system's PCB wiring. Completed the system initialization code, completed to the hardware platform debugging work.Introduced the GPS satellite positioning principle, as well as GPS receive data format. Realizes the vehicle in the embedded graphical user interfaceμC/GUI foundation to carry on guidance system LCD electronic map's plan, proposed map data format's electronic map's design with realizes the method based onμC/GUI and Maplnfo the MIF. proposed enhances the electronic map with the boundary detection algorithm to roam the time demonstration speed. In this developed in the platform also to realize GPS locator data gathering, processing, has completed the localization module partial functions initially.According to system's actual situation, has chosen the real-time multi-duty operating systemμC/OS-II and the embedded graphical user interfaceμC/GUI takes this system's software platform, has completed both in the system hardware platform transplant. In view ofμC/GUI the environment under the simplified Chinese character's demonstration question, has given one kind of quite perfect solution.