生产线RFID系统超高频读写器的设计

根据生产线特定需要，介绍了一种基于ARM的RFID超高频读写器系统，使用LPC2138
微控制器和射频收发芯片ADF7020 作为读写器的核心器件，并使用RS-485 总线网络实现
了各个读写器与后台服务器的通信。文中给出了系统软硬件设计方案，对其实现方法及其关键技术进行了研究。实验结果表明该系统工作稳定，传输数据准确，具有一定的应用价值。
关键词：读写器；RFID；嵌入式系统；RS-485 总线

Design of a UHF reader in RFID production line system HU Zhi-xi (Changzhou Institute of Technology, Jiangsu Changzhou 213002, china) Abstrac：The paper introduced a system of UHF RFID reader based on ARM.The system selects the LPC2138 Microcontroller as the control core,ADF7020 as wireless receiving/dispatch chip,RS485 as communication bus. Its software and hardware design scheme,key technologies and implementation were presented also.It has been proved by tests that the system is good at practice in stablility,and will be of great applied value.
Key words：reader;RFID; Embedded System;RS-485 bus