基于单片机的门禁系统设计
2
ABSTRACT
With the advance of safety request and the promotion of management level, every
company need strengthen the management of the personnel in and out. Access control is used
by many companies, but the most of them are single access control
，
it is unfitted to the
company that has many doors. They can not be managed uniformly and have not the
additory function such as statistics, demand and checking on work attendance. However,
current aptitudedoor-guard systems are generally based on wire communication. This is
unpractical sometimes because its relative expense is high, wires are difficult to be placed,
systemupdate is hard. On the other hand, radio communication gets rid of most above
demerits. This is why wireless door-guard system is a trend in the future. This topic is
designed to non-contact IC card-based wireless communication network access control
system.
In this thesis, we propose a solution for wireless door-guard system. According to
research on door-guard system, we figure out a software and hardware solution specially
applying to residence cells. The solution is based on single star network architecture, choosing
RF module RF12 as the core module of tranceiver circuit, it also brings in a voice codec
platform as voice proceeser. In its software design, through Visual Basic programs the
establishment of simple and practical database system and a reasonable human machine
interface aspects of managers. High cost performance of the access control system to solve the
office-wide management of access control system uses the existing wired communication is
difficult to expand, it is difficult to upgrade and so on.
Key words: Access Control System
，
Wireless Communication
，
Non-contact IC card
