基于单片机的RFID门禁系统设计

Design of RFID Access Control System Based on Single Chip Microcomputer

本系统主要有单片机与FM1702高频读卡器频模块的接口电路、报警电路、门锁继电器电路、液晶1602电路以及单片机最小系统组成。门禁系统的工作方式是:射频卡进入读卡范围后,读卡器读卡,单片机控制器把信息与存储器中预先存储的信息进行验证,验证通过后,再控制继电器开关门,并且蜂鸣器响,指示灯亮,若不通过则无反应。该系统结构简单,实现的功能却很突出,安全可靠,广泛应用于企业、银行、酒店和阅览室等公共场合。

This system is mainly composed of the interface circuit between MCU and FM1702 high frequency card reader frequency module,alarm circuit,door lock relay circuit,LCD 1602 circuit and MCU minimum system.The working mode of the access control system is as follows:after the RF card enters the card reading range,the card reader reads the card,and the SCM controller verifies the information and the pre-stored information in the memory.After the verification is passed,the relay is controlled to open and close the door,and the buzzer rings and the indicator lights up.If not passed,there is no response.The structure of the system is simple,the function is very prominent,safe and reliable,widely used in enterprises,banks,hotels,reading rooms and other public places.