Abstract
Radio frequency identification (radio frequency identification,
RFID), also known as electronic tags (e-Tag), is an RF signal automatic
target recognition and access to relevant information technology. With
the advances in technology, RFID applications widening, has been involved
in all aspects of people's daily lives, and will become a basic technology
of the future information society. Therefore, research, design and
development of RFID systems has important theoretical and practical
significance.
Discusses the theoretical analysis of radio frequency identification
system and card reader to the paper system, many of the key technology
of radio frequency identification system, and the design of radio
frequency identification reader.
This paper firstly analyzes the basic principle of radio frequency
identification technology, the research direction and application. In the
full study of RF Card basic principle, technical characteristics,
relevant international standards, and then put forward based on STC11F32
single chip RF card reader system design method. The design adopts
MFRC522radio frequency read write module in STC11F32under the control of
a single-chip microcomputer to realize Mifare card read and write access
operations.
The hardware part of the design including the MCU control circuit
design, design of the RF module, Antenna circuit design, circuit design
of the serial communication, voice prompts and display circuit design,
including detailed discussion of the reader software design methods.
Software design, including the microcontroller handler, the basic
operation of the RF base station chip RC522, Mifare card operating
procedures, voice prompts and display part of the program. The paper
discussed the request response communication between the software
implementation of the reader with Mifare card required, anti-collision,
election card, certification, read and write function module principle.
