Radio Frequency Information Identification System Based On WIN-CE

The project is the joint development project of Tianjin University of Science and Technology and ZhaoKe electronics corporation,the radio frequency identification information system based on WIN-CE. Due to adverse circumstances,bar code defaced.The constraints brought about the problem that is not identify . RFID is an automatic identification technologies in the field of identification.Through its radio frequency signal automatic target recognize and acquire relevant information.It can solve many shortcomings of traditional recognition technology and replace bar codes. As large information storage of the radio-frequency tags,RFID technology overcome the bar codes small capacity of information.As these unique advantages of RFID technology,its application in various fields will become more extensive.This paper describes the overall structure and software design of the system include information processing platform base on WIN-CE operating system and radio frequency identification terminal that consist of MCU and radio frequency modules. Superior ability of P89C52X2 and software flexibility to achieve functions of command and data by a software simulation SPI data bus modules functions. Design application software on WIN-CE hardware and software platform which realize various data processing functions by the RFID terminal. This article focuses on host computer program and RFID terminal program. The key technology is the software simulation SPI data bus approach, realize command and data transmission functions of the RFID module, the approach overcome incompatibility of four-wire SPI bus controller and three-wire SPI module. The main of the study are as follows:1.This research study the RFID system of internal and abroad,analyze the application of different band RFID system(135KHz below, 13.56MHz, 902 MHz (UHF), 2.45GHz). Finally the system adopted 13.56MHZ RFID systems.2.The overall design of RFID system based on WIN-CE include radio frequency identification terminal and information processing PC.The core is MCU.According to system requirements,The detailed program of analysis and design include data interface specification of RFID module , data protocol,program of RFID module controled by MCU and software program of SPI transmission.Information Processing PC include hardware development platform,BootLoader and WIN-CE operating system.The core is WIN-CE.According to requirement of information processing systems, The program of analysis and design include hardware and software system,information transmission of terminal and host.3. The software design of RFID include the terminal procedure and program of information processing.The program of Card reader terminal achieve function of request,select,anti-collision,password authentication and read.Accordance to requirement of Software system,the core is the control of RFID module.Program design include procedure of public call,software SPI send and receive procedure.They complete RFID module control and data transmission.The program of information process host achieve function of data receiving, checking and analysis.Accordance to requirement of data process,the core is the process of data receiving and processing.Program design include multi-threaded procedure of serial data reception,display and analysis of data,operator interface.The successful completion of the project solve the problem of damage,sewage,small data capacity,poor security of the optical bar code.