Based On The Uhf Band Reader Access Control System Research And Design

Radio frequency identification (RFID) system is a wireless Communication system in which the radio link between the base station and the tags are furnished by the modulated back-scattered waves. It uses a lot of technologies such as IC,antenna,wireless transceiver, data coding and electromagnetic. Few advantages of RFID are not requiring the transponder to be in line-of-sight,long distance identification,readable and writable tags,multiple tags identification,handle Environments like moisture,dirt frost etc. So it is becoming more and more popular.In this paper,we introduce the basic theory, fundamental operating principles and related standards. Also we discuss the key technology and solutions of receiver in RFID reader. we have developed a new generation of access control attendance management system based on the LPC2378 and uC / OS-II as hardware and software platform.