Design And Implementation Of Intelligent Signpost System Based On NFC Technology

With the vigorous development of smart tourism,the informatization of scenic spots has become a focus of current research.The signposts serve as important facilities for the scenic spots and provide guidance for visitors to visit the scenic spots.At present,most of the scenic spots still use traditional information cards.There are some problems such as outdated information and lacking information,which cannot meet the diverse requirements of tourists.A new software and hardware solution to the intelligent signpost system based on analyzing of the characteristtics of the existed which connect the requirements with the technology of NFC is proposed in this paper.This paper designs and implements an intelligent signpost system consisting of a server and two clients based on NFC technology.The data in our system is stored respectively in the passive NFC tags,the active NFC devices and the database on the server.The intelligent signpost system,which combines the technology of NFC,data security and location ranging,is a comprehensive software and hardware system with the function of information introduction and scenic navigation.The main work of this paper includes four parts:the overall design of intelligent signpost system,the design and implementation of NFC hardware interface,the design and implementation of the system software,and the test and analysis of the system.By the system requirements analysis,architecture design,hardware selection and database design,complete system design work.Then,by configuring serial communication,encapsulating NFC device reader mode and peer-to-peer mode control commands,and modifying NFC tag passwords and permissions,the NFC hardware interface design is implemented.The design and implementation of system software is divided into two parts:system management software and user terminal software.The system management software is the operating software of the scenic spot staff,located in the Windows system,using MFC as the interface visualization tool,and it is implemented by C++.The user terminal software is the mobile phone operation software for tourists,which is located in the Android system,and implemented by Java.System test includes basic tests,ranging accuracy tests and system safety tests.Finally,this paper analyzes the results,and puts forward the advantages and problems of the current system.The innovation of intelligent signpost system includes two aspects.First,the system management software and the user terminal software can simultaneously exchange information through the NFC labels reading and writing,the NFC devices point to point communication and the database accessing,which greatly enriches the system data content and the actual application scene.Second,in this paper,a new encryption method of NFC data with two-layers is proposed based on AES and MD5 algorithm.A new location ranging method is proposed based on NFC technology and Dijkstra algorithm.All of the proposed methods are implemented in the system.Lots of tests and analyses ensure good security and stability of the system.Consequently,the system designed in this paper meets the requirement of actual scenic spots and shows huge potential application value.