Research And Realization Of Access Control System On The Basis Of Proximity Card

In order to manage in-and-out rights of location area effectively, supervise in-and-out circumstances of control area in time, help workers stake out all kinds of cases out of the way, prevent various man-made errors, It is absolutely necessary to set up a set of modern intelligent access control system. Locking the door is the original safeguard. At the same time, special person will be assigned to go the rounds. That is the rudiment of public security system. With the development of science and technology, intelligent access control system is a kind of important measure in the modern management. Today, we have come into the information world and computer application system has already penetrated each corner of our society. Therefore, it is an important task to set up the management information system of stakeout in the management of real estate, which is all-directions, tier and high-efficiency. Furthermore, the access control system is an important part in it.With the background of above, the application of Proximity Card in the access control system is introduced. With Delphi as proscenium development tool and SQL Server as the operation database of backstage supporter, the full software about Access Control Management System is developed all alone on the basis of proximity card's strong advantages. The Access Control System introduced by this paper has preferable expansibility, so it can carry out many other functions, for example, Roll Management System.Firstly, the knowledge and work principle, which is related to the Access Control System of Proximity Card, is introduced in the paper. According to systematic requirements, a project to Access Control System is set forth in detail. Secondly, the communications flow of computer is introduced according to the analysis of serial communication protocols. And the protocols between computer's serial port and controller's communication interface are encapsulated as Dynamic Link Libraries in order to be applied to application. Lastly, on the basis of software modularization, the realization of some modules is explained in detail, such as, real-time control and alarm, management of rights, setting ofcontroller's parameter, management of card and person, query and report, system maintenance.Finally, system security is demonstrated from hardware and software.