基于分层结构的RFID读卡系统的开发架构

摘要

RFID 读卡系统被广泛用于系统认证和控制，具有简单、高效、成本低的特点。但系统开发较为复杂，涉及电路设计、接口设计、单片机编程等多个领域。本研究利用分层协议开发了一个RFID读卡系统，其核心技术是用IIC和UART协议包装RFID读写芯片的命令以节约系统的接口资源。本设计利用了分层结构，将系统芯片控制与用户应用分离，并为用户建立了可以进行业务开发的API应用层，提高了RFID芯片的易用性和开发效率。应用效果表明该系统设计完全满足使用要求。%RFID card reader system is widely used in systematic authentication and access control, characterized by simplicity, effectiveness and low cost. However, its complicated development involves a number of areas such as circuit design, interface design, microcontroller programming. The following research develops a RFID reader system by use of a layered protocol, and the core technique is packaging orders of the RFID reader chip by use of the IIC and UART protocols for saving the systematic interface resources. The design separates the system chip control apart from user applications by use of a hierarchical structure and sets up a API application layer for users to be able to conduct business development, which improves the ease usage and developing efficiency of RFID chips. The application results show that the system designed can fully meet the requirements in use.