With the vigorous development of high technology, intelligent management has entered the people's social life, and the intelligent buildings block up one by one to meet with the needs of the information times, as a cross-century construction and the office environment, it must be functional for the development of the present and the future’s needs, which is a abase of cultural and economic development.
The topic of the graduation project is about the induction card access control systems. It composes of seven parts such as the SCM module, reading and writing module, keyboard module, the drive circuit electromagnetic lock, alarm module and the proximity card. With the control of the SCM, the main function is to realize the induction of card, by the error alarm for entering the wrong password, by the correct sound for entering the door. And with the system of the RC500AT’s functional literacy to replace the original card-access control system, it becomes more convenient, durable, stable and reliable.
Keywords: AT89C52 SCM, Access control systems, Induction card.