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        Analysis of EAS Function Application of UHF RFID Electronic Tag

        Analysis of EAS Function Application of UHF RFID Electronic Tag

        2022-11-12
        Analysis of EAS Function Application of UHF RFID Electronic Tag
        Overview of Traditional EAS Systems

        EAS (Electronic Article Surveillance), also known as Electronic Article Surveillance System, is one of the commodity security measures widely used in the retail industry. It is a high-tech electronic anti-theft device, which uses high-tech means to endow commodities with a self-defense capability, which can effectively protect commodities and prevent theft of commodities. In foreign countries, 90% of the retail industry uses EAS systems to reduce theft rate. In China, the EAS system is gradually accepted and adopted by the majority of businesses. EAS system is the most reliable and economical high-tech management method to reduce theft and loss.

        A typical EAS system generally consists of three parts, 1) an electronic sensor attached to the commodity; an electronic sensor control device so that the authorized commodity can enter and exit normally; 3) a monitor, which emits a certain amount of radiation within a certain area of ​​the exit. Monitor the space.

        The working principle of the EAS system is: in the surveillance area, the transmitter transmits a signal to the receiver at a certain frequency. Transmitters and receivers are generally installed at the entrances and exits of retail stores and libraries to form a certain surveillance space. When a tag with special characteristics enters the area, it will interfere with the signal sent by the transmitter, and this interference signal will also be received by the receiver. After analysis and judgment by the microprocessor, the sound of the alarm will be controlled.

        According to the detection signal method of the application, it can be divided into different types such as radio system, electromagnetic wave system, microwave system, frequency division system, intelligent system and acousto-magnetic system. At present, the EAS system has also been widely used in major shopping malls, bookstores, and libraries in China. Its basic working principle is as follows:

        · Attach the magnetic strip to the product.

        · Install detectors at the exit passages of shopping malls.

        · After authorization, the magnetic strip is degaussed by a special degausser to make the magnetic strip invalid.

        · When unauthorized goods (not demagnetized) pass through the exit, the access control detector detects and sends out an alarm to stop the goods from going out.


        RFID technology pays attention to EAS

        With the continuous advancement of technology, in recent years, especially in the past 5 years, the application of Internet of Things technology has developed rapidly, especially in the fields of warehousing and logistics, intelligent transportation and other fields, the Internet of Things has shown strong technical strength and vitality. As one of the main technologies of the Internet of Things, the application of RFID technology has attracted more and more attention. As an upgrade technology of barcodes, RFID technology has the incomparable advantages of barcodes, such as multi-target identification, long-distance identification, confidentiality, etc., which will not be repeated here.

        As a supporting EAS technology developed together with barcodes, what role should it play in the RFID era? Will it continue to exist as it is? Disappear? Or keep up with the pace of RFID technology and keep pace with the times? First of all, it is certain that: As an effective anti-theft technology in shopping malls, EAS will not end its historical mission because of the withdrawal of barcodes. Combined with RFID technology, an EAS technical solution based on RFID technology is proposed. On the basis of traditional EAS, the technology stores anti-theft information in the RFID electronic tag, and achieves the purpose of preventing theft of goods through the identification of the electronic tag.


        Application Analysis of EAS Function of UHF Electronic Label

        RFID is divided according to frequency, including low frequency, high frequency, ultra-high frequency, microwave and other RFID, which have their own strengths in different application fields. This article only describes the EAS technology involved in UHF RFID, which has broad application prospects in the fields of warehousing, logistics, retail, book management, and intelligent transportation.


         

           Taking large-scale retail applications as an example, if UHF RFID technology is      used for fast commodity access management, and at the same time, the original EAS system is used for access monitoring, it will inevitably cause two systems to exist at the same time. Bring difficulties and increase the operating costs of merchants.Because the ISO18000-6C agreement does not stipulate the relevant standards of EAS, different electronic label chip design companies have different considerations in the design of EAS. This article takes NXP's second-generation RFID chip as an example to briefly introduce the EAS working principle of the RFID electronic tag chip.

        Summary

        Most of the traditional retail industry adopts the sales management mode of bar code plus EAS. With the promotion and application of RFID technology in the retail industry and other fields, it will definitely bring innovative changes to the industry. At the same time, because the RFID technology itself considers the EAS function, in many places where RFID technology is applied, the EAS function can be easily realized, the management is simplified, and the cost is reduced. Iconic equipment with technological content is an inevitable trend in the development of modern retail and other fields.

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