Design of the RFID Reader in Pet Management System

In the pet management system,the RFID card-reader is used to acquire the information of animal label and deliver the information to the computer.The RFID card-reader is mainly constituted by ATmega88 and EM4095.EM4095 can emit RF carrier and receive,demodulate the data wave of the card.A new way of software realization of Biphase decoding would come true by using of the capture function of ATmega88 according to the ISO11784/11785 protocol,and the data information of the card would be acquired.The structure of the cardreader is simple,and it works stably,so the card-reader can be used in many places.