Interpretation of the EAS function of UHF RFID access door

　　Shopping malls, bookstores, clothing stores, bookstores and other places that we frequent daily have hidden a variety of technological products. While our lives are being changed bit by bit, knowing these technologies and understanding these technologies can also raise posture in our daily lives!

　　Today, I will introduce to you that a kind of public place has been widely used: EAS system

　　EAS (Electronic Article Surveillance), also known as electronic commodity anti-theft 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 give goods a kind of self-defense ability, which can effectively protect goods and prevent goods from being stolen.

　　In foreign countries, 90% of retail businesses use EAS systems to reduce theft rate. In China, the EAS system has gradually been accepted and adopted by many merchants. EAS system is the most reliable and economical high-tech management method to reduce theft and loss.

　　EAS came out in the United States in the mid-1960s. It was originally used in the clothing industry. Now it has expanded to more than 80 countries and regions around the world. Its application areas have also expanded to various industries such as department stores, supermarkets, and books, especially in large supermarkets (warehouses). Be fully developed.

　　The functions of EAS commodity electronic anti-theft system in clothing stores and clothing stores are as follows:

　　First. Prevent theft. The EAS system changes the previous methods of "person-to-person" and "person-to-goods". It uses high-tech means to give clothing a self-defense ability, so that security measures are implemented on every piece of clothing, which is a thorough and effective solution. The clothing stolen problem, in exchange for the loss of the business.

　　Second. Simplifying the management EAS system can effectively curb the phenomenon of "inside theft", ease the conflict between employees and managers, remove employees' psychological barriers, and enable employees to devote themselves to work, thereby improving work efficiency. Using the EAS system can also select and optimize employees from the original basis, thereby improving the quality of the store.

　　Third. Improving the shopping atmosphere. The past "person-to-person" approach has made many consumers disgusted and affected their desire to shop. As a result, merchants may be left out of the room. The EAS system can create a good and relaxed shopping environment for consumers, allowing them to purchase products freely and unfettered, greatly improving the relationship between businesses and consumers, and winning more customers for businesses. Eventually increase sales and increase profits.

　　Fourth. Deterrence EAS system uses a strong and polite way to prevent customers from "scratching the sheep", avoiding disputes caused by human factors, and respecting human rights while also safeguarding the interests of clothing stores. For thieves, the clothing electronic anti-theft system Psychologically, it creates a huge deterrent, so that those with "a difference in thought" can dispel the idea of stealing.

　　Fifth. The beautification of the environment EAS system itself is a high-tech product, its beautiful appearance, sophisticated production technology, can be integrated with the modern and magnificent decoration, to achieve the "icing on the cake" effect, protect the clothing, but also beautify The environment of a clothing store is a symbolic equipment for a high-end clothing store to show its economic strength and technological content, and it is the development trend of a modern clothing store.

　　The working principle of the EAS system is:

　　In the monitoring 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. This interference signal will also be received by the receiver, and then after the analysis and judgment of the microprocessor, it will control the sound of the alarm.

　　A typical EAS system generally consists of three parts:) an electronic sensor attached to the product; 2) an electronic sensor control device to allow the authorized product to enter and exit normally; 3) a monitor, which monitors the radiation within a certain area of the exit space.

　　In the global EAS industry, there are four types of system equipment due to different system designs: 1. RFID system (full name: radio frequency identification system; low frequency 125K, high frequency 13.46M ultra high frequency: 900MH) 2. AM system (full name : Acoustic and magnetic commodity anti-theft system frequency: 58KHz) 3. RF system (full name: radio frequency system frequency: 8.2MHz and some others) 4. EM system (full name: electromagnetic wave anti-theft system frequency: 1-2MHz)

　　Take the EAS system supported by UHF RFID technology as an example:

　　The UHF RFID electronic tag attached to the article contains information stored in chips such as TID and EPC.

　　The monitor, namely the UHF RFID security door/access control, can radiate a certain surveillance space within a certain range of the exit.

　　When an UHF RFID electronic tag passes through the radiation area of the security door, the tag is activated and radiates signals to the outside. The security door receives the information of the electronic tag (mainly EPC information) and transmits it to the microprocessor. Comparison and analysis of EPC information and EAS function setting conditions.

　　If the conditions set by the EAS function are met, the alarm will be controlled to alarm. Broadweit smart BRC-04B security door realizes anti-theft by setting the matching code and mask rule of EPC information. You can set one or multiple bits, and up to 96-bit binary code anti-theft bit can be set.

　　With the popularity of the Internet of Things, UHF electronic tags are becoming more and more common, and security doors need to be considered more comprehensive when setting EAS anti-theft positions, because there may be electronic tags on snacks and clothing. If you set up EAS If these tags are not circumvented, the security door may have false alarms, and the most effective way to circumvent these tags is to increase the number of digits set by the anti-theft position.

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