The Design Of All-in-one Card For Urban Traffic Based On GPRS

In recent years, with the development of the Golden Card Project, the non-contact IC card is being applied in every walk of life, from high-grade non-life fields to ordinary life, for instance, traffic logistics, access control-recognition Consumption. The all-in-one card system for urban traffic is a typical example based on the non-contact IC card. In conmunication, the system is based on wired conmmunication, which reduce the flexibility in the scope of application. On this basis, GPRS technology have been applied in the all-in-one card system for urban traffic in order to enhancing flexibility.The topic describes the development of the all-in-one card system for urban traffic, and the GPRS technology, and discusses the basic principle and related technologics. The data in the non-contact IC card is analyzed, pointing out the insufficient of the eneryption algorithm which is used in the non-contact IC card, while improving the RSA algorithm, and the superiority is proved. with regard to the method in differernt of network in conmmunication, I analysis the advantage ande disadvantage of the variety of network mode and test in the same enviroment. The result of test show that the APN network is the fastest and real-time method of transfer data.In the last chapter, the design of software is carried out and described the basic functions of mobile terminal; the functions and interface of host computer liquidation center; the transmission protocol of GPRS and the process of channel building. Finally, it summarizes the whole research work as well as the prospect of the project , and points out some features that need improved.