| Vehicle navigation is a embedded system in car, it can bring much more convenience for drivers, and supply people with kinds of advantage services.The first and most obvious application of GPS is the simple determination of a "position" or location. GPS is the first positioning system to offer highly precise location data for any point on the planet, in any weather. That alone would be enough to qualify it as a major utility, but the accuracy of GPS and the creativity of its users is pushing it into some surprising realms. The actual application of the GPS either needs the comprehensive GPS with complete functions, or the calling for the appearance of the exclusive GPS platform for special areas.In this paper, research on the development status of embedded systems and vehicle-navigation systems; Outline the concept, structure and characteristics of embedded System. According to the structural characteristics of embedded system and the design principles, a general embedded system design methodology and the key technology are given.The whole solution of embedded intelligent vehicle navigation system based on ARM and WinCE technology is drown out according to the practical situation. Firstly the rock-bottom hardware platform of the embedded system including the circuit design of each module is described in detail. At the same time, the hierarchical structure is adopted to design the software of the embedded system. Customizing and transplanting Windows CE OS are stated at length. The hard problems met in software development, which include the program of the Bootlooader and the Drivers, are discussed in detail. The software of application layer is the principal part of the entire software design. According to modularization design idea from the software engineering, the total system framework of application layer is divided into several software modules, and how to design them is presented respectively. |
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