校园多媒体课堂门禁设计

采用MIFARE完成IC读卡器射频天线相关的设计,提出具体射频天线和对应匹配电路的设计要求,以达到无接触式读卡通信的最佳性能.对射频卡的数据结构,数据传输的方式,相关的时序,典型电路的设计参数,匹配电路,电磁兼容性电路,数据安全性与完整性,门禁控制方式等进行了详尽地探讨,并给出了一个根据射频天线接口电路理论和无接触读卡通信协议设计出校园多媒体课堂的门禁系统.非接触式高频射频卡用于门禁系统,克服了传统门禁功能单一,升级困难,保密性差的缺点,是各类门禁系统的发展方向.

Design of entrance guard for multimedia classroom

RF-related design of the MF RC500 MIFARE reader IC is finished by using MIFARE. A specific antenna and matching circuit are demonstrated to achieve the best performance for a communication with a contactless MIFARE card. These items are discussed in details including the data structure of RF card, its data transmission, relevant time sequence, some parameters for the typical circuits, corresponding matching circuit, EMC, data security, data integrity, the control method for a entrance guard, and so on, and a system about an entrance guard for multimedia classroom, which based on the RF interface theory and the protocol of contactless reader IC, is presented. The system is a good example for modern entrance guard control instead of previously simple performance, inconvenience upgrade, and bad security.