Access Control System Based On Radio Frequency Identification Technology Research And Design,

Aimed at the development of a entrance guard system based on Radio Frequence identification,the article conducted a research in some strategies of entrance guard system theoritically and practically.Included hardware design and software design of system, design and optimization of the antenna,data security of system,anti-interfere design of the system.A entrance guard system was developed based on the researches, however a good influence is received.Main research and job:1) Regard MF RC500 as the core , combined AT89c52 , LCD, x5045 etc to design a set of entrance guard system, include hardware and software design of PCD , LCD, keyboard interface etc ,fianlly debuged and optimized this system at the scene;2) Reserches the operating procedure of MF RC500 systemically,and developed the base-level software of PCD used C51 language,then put it into different subprogram models due to vary operates to cards which is benefits system-updating;3) Reserches muti-computer communication based on RS-485,then established a communicate protocol and develops a simple serial- communication-debuging tool used Delphi,which realize the communication between the PC and the system.4) Reserches the Small Loop antenna suitable for Radio system of the shortwave,analyses the performance-affect of antenna's parameters, then designes and optimizes the antenna, which are tested by a experiement;5) Analyses the data security of system and the performance of 3DES code/decode arithmetic,finally realize it with assemble language.