Car Vending Machine System Design And Realization

The Vending Machines System for vehicle based on GPS/GPRS is one that adopts GPS as vehicle positioning means and GPRS as wireless data transmission means, which is fit for current demand of technology development.Firstly, in this thesis the relevant technologies of the Vending Machines System for Vehicle have been studied. The whole architecture of the system is designed. The system is comprised of three components which are studied respectively, the structure of hardware and software of the components are given. Then, a novel schema which constructed with pulse packet transmission and remote awake is designed to fit the communicate characteristics between GPRS and Internet, it resolves the problem of Address terminal with reserved IP. And also the designing of the communication protocol assures the reliable encryption and encryption of data, through it, the monitoring center can choose data needed and set the frequency of data. At last, by running in experiment test, the maximal communication rate can reach 20kb/s. The delay of communication is about 0.5s.This thesis provides a feasible solution for the Vending Machines System for vehicle, and points out the further research direction.