Although bar code technology, one of the automatic identification systems, has matured more than 30 years ago, few companies were willing to adopt it at the time. Until 1984, Wal-Mart and other major retailers forced their suppliers to adopt the technology. The application of code rapidly expanded. Now, as the world's top retail giants Wal-Mart, Intercorp, and Metro have asked their suppliers to provide goods must have RFID (Radio Frequency Identification, radio frequency identification technology) tags. This is undoubtedly the market demand to promote Wal-Mart to choose more advanced automatic identification technology. Compared with the contact bar code technology, RFID is a non-contact automatic identification technology. Its powerful functions, large information capacity, and read/write capabilities make it more advantageous in commodity circulation.
The development of library automation, from bar code technology to RFID technology, has achieved a qualitative leap after a long transition: With the aid of RFID technology, Singapore libraries have seen a 30-fold increase in borrowing rates, saving an annual cost of 28 million U.S. dollars and 2000 labor costs for staff.
1 Bar Code and RFID Electronic Label Introduction 1.1 Bar Code System Bar code system is a kind of binary code. This code consists of parallel lines and separated gaps. It consists of a series of wide and narrow lines or gaps. Can be explained by numbers/letters. Reading is done by a laser scanner (which we now call a "light pen"), ie by different reflections of the laser light on the black lines and the white gap. Although their physical structures are the same, there is a clear distinction between the code structures of about ten types of barcodes used today. The library uses barcodes 39.
1.2 RFID electronic tags RFID electronic tags consist of a tag antenna (or coil) and a tag chip. The chip is a monolithic system with radio transceivers and storage functions. It stores electronic data in a certain format and can identify information as needed. RFID electronic tags are divided into passive tags and active tags. The library uses passive tags (the tags below refer to such tags). After receiving the signal from the reader, the tag sends the information stored in the chip by virtue of the energy obtained by the inductive current, and is also called a passive tag. RFID tags can be made in a variety of shapes and sizes. They are extremely thin and flexible. They can be affixed to a variety of information carriers other than metal, providing high security.
2 Comparison of the advantages and disadvantages of the two types of optical pens When reading barcodes, the manual operation is inefficient and requires one-by-one processing. It is prone to error, labor intensity, and is affected by environmental conditions. In comparison, RFID tags It has more advantages: its reader does not need visible light source, has penetrability, can directly read information through external materials, can process multiple RF tags at the same time, batch processing, simplifies labor intensity, and tracks the position of items in real time. The error is extremely low and is not affected by environmental conditions. The advantages and disadvantages of the two can be seen in the table above.
3 The problems and development prospects of RFID electronic labels From barcodes to RFID electronic labels, they have also gone through the process of development, exploration and improvement of barcodes, barcodes, RFID tags, and RFID tags. RFID technology cooperates with the library information system, providing a very good opportunity for the creation of a digital, automated library. However, there are some problems with RFID electronic tags that need to be resolved:
(1) Privacy issues: Transparent management, effective cost reduction, and security are very interesting.
(2) Breakthrough in technology: According to a survey conducted by the organization Auto-ID Center, even if double labels are attached, 3% of RFID cannot be read out; only 78% of labels with only one label are correctly read. Out. In addition, RFID electronic tags and readers have directionality and RFID signals are easily blocked by objects, which is also a major challenge for the future development of radio frequency technology.
(3) Cost reduction: In September 2005, news of the Gen2 label production and the price reduction of RFID tags after another was reported: Alien Technologies announced that its first-generation Classl tag price was 1 million. Or more orders will be reduced to 19 cents (see: Alien Technologies announced the price of RFID tags dropped to 12.9 cents), RSI claims that its second-generation tags will be produced in more than 1 million cases. Less than 15 cents (see: RSI ID produces 2 million Gen2 tags), and Avery Dennison announces that its second-generation inlays (inlays) can reach 7.9 cents in the same amount of demand. See: Avery Dennison Releases 7.9 Cent Gen2 Embedded Module). We can't help thinking that, as it goes on, the legendary 5-cent RFID electronic tag will soon be realized. At present, the price of RFID electronic tags is still very high. RFID electronic tags are divided into 0, 1, 2, 3, Level 4 and Level 5, the higher the level, the more functions and the higher the price.
(4) Formulation and implementation of international standards: Common RFID for libraries; electronic tag specification IS015693 standard, 128b~EEPROM, operating frequency 13.56MHz. Although there are still some problems in the application of RFID tags in libraries, I believe that in the near future, as the technology continues to improve, the degree of library automation, intelligence, and digitization will be greatly improved. Its development prospects are: Broad.
The development of library automation, from bar code technology to RFID technology, has achieved a qualitative leap after a long transition: With the aid of RFID technology, Singapore libraries have seen a 30-fold increase in borrowing rates, saving an annual cost of 28 million U.S. dollars and 2000 labor costs for staff.
1 Bar Code and RFID Electronic Label Introduction 1.1 Bar Code System Bar code system is a kind of binary code. This code consists of parallel lines and separated gaps. It consists of a series of wide and narrow lines or gaps. Can be explained by numbers/letters. Reading is done by a laser scanner (which we now call a "light pen"), ie by different reflections of the laser light on the black lines and the white gap. Although their physical structures are the same, there is a clear distinction between the code structures of about ten types of barcodes used today. The library uses barcodes 39.
1.2 RFID electronic tags RFID electronic tags consist of a tag antenna (or coil) and a tag chip. The chip is a monolithic system with radio transceivers and storage functions. It stores electronic data in a certain format and can identify information as needed. RFID electronic tags are divided into passive tags and active tags. The library uses passive tags (the tags below refer to such tags). After receiving the signal from the reader, the tag sends the information stored in the chip by virtue of the energy obtained by the inductive current, and is also called a passive tag. RFID tags can be made in a variety of shapes and sizes. They are extremely thin and flexible. They can be affixed to a variety of information carriers other than metal, providing high security.
2 Comparison of the advantages and disadvantages of the two types of optical pens When reading barcodes, the manual operation is inefficient and requires one-by-one processing. It is prone to error, labor intensity, and is affected by environmental conditions. In comparison, RFID tags It has more advantages: its reader does not need visible light source, has penetrability, can directly read information through external materials, can process multiple RF tags at the same time, batch processing, simplifies labor intensity, and tracks the position of items in real time. The error is extremely low and is not affected by environmental conditions. The advantages and disadvantages of the two can be seen in the table above.
3 The problems and development prospects of RFID electronic labels From barcodes to RFID electronic labels, they have also gone through the process of development, exploration and improvement of barcodes, barcodes, RFID tags, and RFID tags. RFID technology cooperates with the library information system, providing a very good opportunity for the creation of a digital, automated library. However, there are some problems with RFID electronic tags that need to be resolved:
(1) Privacy issues: Transparent management, effective cost reduction, and security are very interesting.
(2) Breakthrough in technology: According to a survey conducted by the organization Auto-ID Center, even if double labels are attached, 3% of RFID cannot be read out; only 78% of labels with only one label are correctly read. Out. In addition, RFID electronic tags and readers have directionality and RFID signals are easily blocked by objects, which is also a major challenge for the future development of radio frequency technology.
(3) Cost reduction: In September 2005, news of the Gen2 label production and the price reduction of RFID tags after another was reported: Alien Technologies announced that its first-generation Classl tag price was 1 million. Or more orders will be reduced to 19 cents (see: Alien Technologies announced the price of RFID tags dropped to 12.9 cents), RSI claims that its second-generation tags will be produced in more than 1 million cases. Less than 15 cents (see: RSI ID produces 2 million Gen2 tags), and Avery Dennison announces that its second-generation inlays (inlays) can reach 7.9 cents in the same amount of demand. See: Avery Dennison Releases 7.9 Cent Gen2 Embedded Module). We can't help thinking that, as it goes on, the legendary 5-cent RFID electronic tag will soon be realized. At present, the price of RFID electronic tags is still very high. RFID electronic tags are divided into 0, 1, 2, 3, Level 4 and Level 5, the higher the level, the more functions and the higher the price.
(4) Formulation and implementation of international standards: Common RFID for libraries; electronic tag specification IS015693 standard, 128b~EEPROM, operating frequency 13.56MHz. Although there are still some problems in the application of RFID tags in libraries, I believe that in the near future, as the technology continues to improve, the degree of library automation, intelligence, and digitization will be greatly improved. Its development prospects are: Broad.
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