Working principle of RFID automatic identification system
The automatic identification and data collection system composed of RFID technology is composed of at least the following three groups:
(1) Reader (Reader): a device used to read (or write) tag information;
(2) Radio frequency tag (Tag): used to identify the target and provide user data area to store, read and write target data.
(3) Computer application support system: process and use data according to user needs
Application status of RFID technology in libraries
IDTechEx survey of RFID application cases in the world
Application status of RFID technology in libraries
In the late 1990s, the National Library of Singapore began to test the application of RFID in libraries;
In August 2003, the 69th IFLA Conference established a special RFID library application forum to introduce and promote RFID application experience;
In 2004, the Singapore Library Authority began a comprehensive upgrade of the RFID system implemented in the late 1990s and promoted the RFID application system throughout the country;
From 2004 to 2006, many foreign libraries began to deploy and implement RFID application systems. The libraries of Singapore, Switzerland, the Netherlands, Denmark, Sweden and other countries have basically popularized the application of RFID in libraries;
In March 2006 and June 2006, Jimei University Chengyi College Library and Shenzhen Library implemented the RFID application system in the library.
According to the retrieved information, the RFID technology implemented in the library before 2005 is based on HF, and UHF RFID has only been used in libraries and book supply chains since 2006;
In early 2005, Civica, a supplier of library automation systems, developed a library RFID application system based on UHF RFID technology, and began to apply it to some libraries in Australia and Singapore in 2006;
In May 2006, the famous Dutch bookstore chain BGN began to carry out the EPC UHF G2 RFID application test in one of the branches. It is expected to be fully promoted in other bookstores in 2007.
Why does our library conduct UHF RFID application test
Our library signed an agreement with Ningbo Yuanwanggu Company to carry out UHF RFID technology library application test in September 2006, for the following reasons:
1. Although the existing HF RFID library solution is relatively mature, there are some problems with high prices, poor label installation concealment (anti-theft), and inventory collection. Some problems are unlikely to be broken in the short term; while UHF The advantages and rapid development trend of RFID technology will provide the possibility to solve these problems.
2. After the establishment of the EPC G2 standard in the second half of 2004, ultra-high frequency (UHF) tags began large-scale production and developed rapidly in the product supply chain management, retail, and pharmaceutical industries. "Due to its advantages of remote identification and low cost, It is expected to become mainstream in the next five years. "(Five ministries and commissions including the Ministry of Science and Technology of the People's Republic of China, June 9, 2006: White Paper on China's Radio Frequency Identification (RFID) Technology Policy)
3. In 2006, the Dutch BGN bookstore adopted EPC UHF G2 RFID technology in its book supply chain and sales management in consideration of UHF's development prospects and price factors; in 2005, another Dutch book vendor began using HF RFID in its book supply NBD | Biblion has also begun to explore the feasibility of applying EPC UHF G2 to books.
4. CIVICA's library management system SPYDUS has integrated the UHF RFID module in 2005 and was implemented in some libraries in Australia and Singapore in 2006
5. In 2006, Zebra proposed the application of RFID in logistics: "If you are preparing to implement the RFID pilot project, you should directly adopt the UHF G2 standard" (Zebra released the first article of the 5 major considerations on the Gen2RFID standard , January 11, 2006)
6. Extensive discussions and in-depth exchanges with domestic and foreign libraries, library RFID system suppliers and technical experts have enhanced our understanding and confidence in the technical and economic feasibility of UHF RFID application in libraries.
7. Long-term exchange and cooperation with Ningbo Yuanwanggu Company. Established in 1999, Yuanwanggu Information Technology Co., Ltd. is a well-known high-tech enterprise engaged in the research and development of radio frequency identification technology in China. It was listed on the Shenzhen Stock Exchange in August 2007. Its subsidiary Ningbo Yuanwanggu Company specializes in UHF RFID libraries. In the research and development of application systems, our library had many contacts with the company from 2005 to 2006. In 2006, after Ningbo Yuanwanggu Company completed the basic equipment and tags used in UHFRFID in the library, it looked for a library that is willing to cooperate with the company for experimentation. For the above reasons, our library signed a cooperation agreement with the company in September 2006 for the application test of UHF RFID in the library.
Brief description of UHF and HF
The standard of RFID is one of the issues that everyone is most concerned about. The promulgation of international standards for air interface communication technology of HF and UHF is as follows:
In 1999, ISO / IEC formulated the ISO / IEC 15693 standard, which regulated the implementation of high-frequency radio frequency identification technology;
On August 15, 2004, ISO released the ISO / IEC 18000-6A / 6B 2004 International Standard (Information Technology—Radio Frequency Identification Based on Single Product Management—Part VI: Air Communication Interface Parameters with a Frequency of 860-960MHz) ;
On December 16, 2004, EPCglobal officially approved and announced the EPC UHF Class 1 GeneraTIon 2 RFID standard.
June 15, 2006 EPC C1G2 was approved by ISO / IEC and officially became an international standard ---
ISO / IEC18000-6C. Labels that comply with this standard are simply referred to as G2 tags (EPC C1G2 standard is an air interface communication technology standard between electronic tags and readers that is launched by EPCglobal based on the concept of EPC and the Internet of Things to designate a unique identification code for each item)
EPC UHF Class 1 GeneraTIon 2 electronic label, generally called G2 label, has the following characteristics:
(1) Open standards: This means that the acquisition of tags is multi-channel, and it will prompt a rapid price reduction.
(2) Storage and password: Gen2 tags have 96-bit EPC codes in the chip, as well as unique passwords, greater storage capacity and better security performance can effectively prevent the chip from being illegally read.
(3) Size: The chip will be reduced to 1/2 to 1/3 of the existing version.
(4) Multi-vendor compatibility: There will be good compatibility between devices from different vendors.
(5) High reliability: The tag has a high reading rate.
(6) Better label reading performance: avoid repeated reading during batch label scanning.
(7) "Inactivation" function (Kills): The tag can be permanently destroyed by itself after receiving the inactivation instruction of the reader.
(8) Security: The label has a better security encryption function to ensure that the data will not be diffused during the reading process of the reader.
(9) Real-time: Allow tags to enter the reading area after being delayed and still be read, which is beyond Gen 1's reach.
(10) Global frequency allocation: Wider spectrum and radio frequency allocation improve UHF frequency modulation performance to reduce interference with other radio equipment.
(11) Recognition and reading rate: The read and write rate of Gen 2 tags is 10 times that of existing tags, which enables high-speed automatic operation by applying RFID Gen 2 tags
Shantou University Library UHF RFID Application Test
The test mainly includes two parts:
The first part is the self-service loan and book anti-theft detection function test, this part of the test is mainly achieved through the actual operation of the reader's self-service loan;
The second part is a comprehensive test of the functions of the correlation between the electronic tags of books and library cards and the relevant information of books and readers, book inventory and sorting, etc., mainly through the daily work of library managers. The application test results show that the UHF RFID system handles the library business process correctly, and can well realize functions such as book self-check, book anti-theft alarm, electronic label conversion, book inventory and wrong rack sorting, etc. The distance control and read / write performance achieve the same performance as the HFRFID system, and some aspects even exceed the HF RFID system.
The application test of UHF RFID conducted by Shantou University from September 2006 to June 2007 mainly tested the application of ISO18000-6B electronic tags and related equipment in the library. The test results are as described above.
Since September 2007, our library has adopted UHF G2RFID technology to formally develop new book circulation and collection management applications. As far as the current state is concerned, the operation is in good condition, and the G2 tag has better performance than the 18000-6B tag used in the test. And performance.
At present, the main functions of our library using UHF RFID technology are:
1. The association and identification of electronic tags with books and reader-related information;
2. Book self-service loan;
3. Book anti-theft detection;
4. Book inventory, including the shelf and the whole shelf, etc .;
5. Book search;
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