Design And Research Of3D Anti-theft Detection System For Library Based On RFID Techology

With the rapid development of automatic control technology, communicationtechnology and radio frequency identification technology, types and functions oflibrary access channel are also replaced fast. The features of reading slow and easyto wear of two-dimensional code magnetic stripe for the traditional library can notmeet the requirements of modern library management. For these deficiencies withthe technology of RFID tags, electronic tags contain IC chips and transceiver coils,so it has the advantage of repeatedly rewritable information storage capacity, highspeed and long life. The application of electronic tags in the library accessmanagement system has become the mainstream of library theft and management.In this thesis, due to development and needs of RFID access control system, amulti-channel three-dimensional anti-theft detection system has be designed basedon RFID technology. It will have social and economic value.Due to the analysis of the coupling field between the antennas, we find a wayto design a3D antenna system which can read electronic tags from omni-directional.By analyzing several options for intelligent access control system and according tothe needs and features of this system, using integrated access control systems withbus technology constitute the program of theft detection and statistics of the RFIDtags. The main works are listed as follows:1. Complete the design of matching circuit of antenna working in the13.56MHz frequency. The antenna has feature of low-cost, high gain, and longdistance readable. The antenna system constituting by the multi-antenna andswitching the antenna control circuit can read electronic tags from3D direction.2. Design low-cost, high efficiency antenna anti-theft system program. Designand simulate reliable system hardware circuit. The original reader hardware andsoftware does not be changed, reducing development time and cost.3. Design the access control system software program, completing control ofthe access channel system. Design the communication protocol between the accessnetwork equipment, completing data transmission and acquisition of the system.