eas system


Electronic tags are divided into soft tags and hard tags. The cost of soft tags is lower, and they are directly attached to more "hard" products. Soft tags cannot be reused; hard tags are used once The cost of sex is higher than that of soft labels, but it can be reused. Hard tags must be equipped with a special nail remover, which is mostly used for soft and easy-to-penetrate items such as clothing. Decoders are mostly non-contact devices with a certain decoding height. When the cashier is checking or bagging, the electronic tag can be decoded without touching the degaussing area. There is also a device that combines a decoder and a laser barcode scanner, so that the product collection and decoding can be completed at one time, which is convenient for the cashier's work. This method must cooperate with the laser barcode supplier to eliminate the difference between the two Interference with each other to improve decoding sensitivity. Undecoded goods are taken out of the mall, and when they pass through a detector device (mostly gate-shaped), an alarm will be triggered to remind cashiers, customers and mall security personnel to deal with them in time.

Type: Acousto-magnetic series, radio frequency series (RF) and electromagnetic series with very few applications

Working principle

The detection antenna is placed at the door, The sold goods are buckled with soft or hard tags; when you walk out of the store door without decoding or unlocking at the cash register, the detection antenna will automatically sound an alarm to notify the clerk that the store has been stolen. It will not make customers feel uncomfortable and cannot install it in the fitting room like a monitoring system, and it also acts as a deterrent to prevent thieves from entering.

What is the principle of the EAS anti-theft device unlocker? Will the alarm detect the unlocker and will alarm? There is a lock core in the eas anti-theft label. The lock core is composed of 3 steel balls, springs and other accessories. Nail insert After entering the label, the nail is locked by the lock cylinder (that is, it is stuck by the 3-ball steel ball, the structure of the lock cylinder is small on the top and large on the bottom), so it is pulled tighter and tighter. Unless the plastic shell is broken, if it is plastic If the shell is strong enough, it cannot be pulled out at all. This requires a lock opener. The magnetic force of the lock opener will suck the steel ball in the lock cylinder downward, and there will be a space between the nail and the steel ball. The nail can be used. It is separated from the label. The unlocker is a magnet, called magnet steel. The magnetism is very strong. It will not alarm when you encounter the detector. About the anti-theft process and principle of the supermarket commodity electronic anti-theft system (EAS) 1. Commodity There are no anti-theft labels, only barcodes. Is every product magnetized on the barcode? How to get on? 2. In addition to identifying the price of the product, does the barcode scanning at the cash register have the effect of demagnetization? If not, where is the product demagnetized during payment? 3. I bought things in bulk, labeled them after weighing them, and if they were torn out, would they call the police if they were taken out? If a magnet is used, can it interfere with the magnetism on the product and escape the anti-theft system?

1. The barcode has no anti-theft effect

2. There is no degaussing effect, degaussing (degaussing plate) on a board on the cashier counter

3. No, paper The tag is not an anti-theft tag. Magnets don’t mean it. Sometimes it can interfere and sometimes it can’t. Just like a mobile phone and an anti-theft tag. Sometimes it can interfere, but sometimes it will ring.

Radio frequency principle

EAS system is composed of detector, electronic tag, decoder/unlocker. 1. The detector generally consists of two parts: a transmitter and a receiver. The basic principle is to use the transmitting antenna to emit a scanning band, forming a scanning area between the transmitting antenna and the receiving antenna, and using the receiving antenna to restore the frequency band within the receiving range, and then use the resonance principle of electromagnetic waves to search Whether there is a valid label in a specific range, when a valid label appears in the area, an alarm is triggered. 2. The internal structure of the electronic tag is an Lc oscillating circuit, which is installed on the product in a special way and can only be released by a dedicated decoder and unlocker. Electronic labels appearing on the market include soft labels, hard labels, wine bottle protectors, anti-theft labels for milk powder, CD/tape protection boxes, etc. 3. The decoder is a device that invalidates the soft label. The most commonly used in the market is a non-contact decoder, as long as the salesperson passes the tag within 20cm above the decoder, the decoder can be decoded. The decoder can be used with the POS laser cash register platform. The unlocking device is a device to quickly, conveniently and simply remove various hard tags.

Anti-theft system

1. Prevent theft. The EAS system changes the previous "person-to-person" and "person-to-goods" methods. It uses high-tech means to give goods a self-defense ability, so that security measures are implemented on each product, and it can completely and effectively solve the theft of goods. problem. The survey shows that the theft rate of merchants with EAS system is 60%-70% lower than that of merchants without EAS system.

2. Simplify management. EAS system can effectively curb the phenomenon of "internal theft", ease the contradiction between employees and managers, remove employees' psychological barriers, and enable employees to devote themselves to work, thereby improving work efficiency.

3. Improve the shopping atmosphere. In the past, the "person-to-person" approach has disgusted many consumers, and merchants may also be left out of the cold due to this. 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 increased sales and increased profits.

4. Deterrence. The EAS system uses a tough and polite way to prevent customers from "scraping sheep" and avoid disputes caused by human factors. While respecting human rights, it also safeguards the interests of businesses. For the thief, the EAS system creates a huge psychological deterrent to the thief.

5. Beautify the environment. EAS system itself is a high-tech product. Its beautiful appearance and sophisticated production technology can be integrated with modern and magnificent decorations to achieve the effect of "icing on the cake", protecting the products and beautifying them at the same time. The environment of the shopping mall is a high-end shopping mall, large and medium-sized supermarkets, the iconic equipment showing economic strength and technological content, which is an inevitable trend for the development of modern shopping malls.

System overview

With the improvement of people’s living standards and the acceleration of the pace of life, open-shelf supermarkets provide consumers with convenient and quick shopping methods, which are becoming more and more popular among consumers . The emergence of a large number of supermarkets, on the one hand, has brought great convenience to consumers, significantly improved the service quality and economic benefits of merchants, and at the same time brought a headache for merchants-theft of goods. The internationally used warning line of commodity loss rate is 1.8% of turnover, while the commodity loss rate of open shelves, self-selected, supermarkets and chain stores in my country has reached 3%-5% of turnover. According to CCTV reports, in 1993, the amount of stolen goods from supermarkets in Shanghai amounted to more than 3 million yuan, and by 1997 it reached more than 30 million yuan. In 1998, the amount of supermarket goods stolen in Beijing was 70-80 million yuan. According to a report on May 22, 2000, the Beijing Evening News reported that the amount of goods stolen from supermarkets nationwide in 1999 was 80 billion yuan. Unfortunately, this number is still growing rapidly. It seriously damages the interests of merchants, causes the profit of the merchants to drain in vain, and even leads to the closure of shopping malls. Therefore, how to prevent the theft of goods has become an urgent problem for many businesses. Commodity electronic anti-theft system (ElectronicArticle Surveillance), referred to as EAS. It is a high-tech electronic anti-theft device. It 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 is gradually accepted and adopted by the majority of merchants. EAS system is the most reliable and economical high-tech management method to reduce theft and loss. The EAS system produced by our company adopts the principle of LC resonance reflection, which has the advantages of beautiful appearance, high sensitivity, and low false alarm rate.

Comparison of classification and performance indicators of electronic anti-theft systems in shopping malls:

There are four main technologies in the EAS system, namely radio frequency, electromagnetic, acousto-magnetic, and radio frequency identification. Because electromagnetic and radio frequency products are cheap, and their labels are usually permanently pasted on commodities or commodity packaging; while microwave and acousto-magnetic labels are more expensive, most supermarkets generally choose electromagnetic and radio frequency. Therefore, electromagnetic and radio frequency are used.

Radio frequency

It is mainly composed of three parts: detector, decoder and electronic tag, auxiliary equipment and unlocker.

Electronic tags are divided into soft tags and hard tags. The cost of soft tags is lower, and they are directly attached to more "hard" products. Soft tags cannot be reused; hard tags have a higher one-time cost than soft tags , But can be reused. Hard tags must be equipped with a special nail remover, which is mostly used for soft and easy-to-penetrate items such as clothing. Decoders are mostly non-contact devices with a certain decoding height. When the cashier is checking or bagging, the electronic tag can be decoded without touching the degaussing area. There is also a device that combines a decoder and a laser barcode scanner, so that the product collection and decoding can be completed at one time, which is convenient for the cashier's work. This method must cooperate with the laser barcode supplier to eliminate the difference between the two Interference with each other to improve decoding sensitivity. The detector is generally a detection system device at the entrance and exit of a shopping mall or at the cashier channel. After receiving the correct payment from a customer for the purchase of a product, the cashier can neutralize the label attached to the product to authorize the product and legally leave a designated area. When the undecoded goods are taken out of the mall and pass through the detector device (mostly gate-shaped), an alarm will be triggered to remind cashiers, customers and mall security personnel to deal with them in time.

Electromagnetic system

It is mainly composed of anti-theft antenna, demagnetizer, and magnetic strip; auxiliary is composed of magnetic strip detector. Performance index comparison

Detection rate:

Detection rate refers to the number of alarms when a unit number of valid tags pass through different positions of the detection area in different directions.

Wireless radio frequency: For daily necessities, the radio frequency system has a loop coil type of soft label. If there are tin foil or metal components on the protected goods, the alarm effect will be lost, and the overall alarm rate will be low. Generally 60-80%;

Electromagnetic system: Since the consumables used in the device are magnetic strips, it is not greatly affected by foil or small metal components, and the alarm rate can be as high as 95%.

Interference ability

The radio/radio frequency RF system is the most severely affected by metal shielding. This may be one of the main limitations of radio/radio frequency in actual use. The electromagnetic wave system is also affected by metal objects. When a large piece of metal enters the detection area of ​​the electromagnetic wave system, the system will "stop" phenomenon. When the metal shopping cart or shopping basket passes by, the goods inside will still be No alarm is generated because of shielding.

Protection width

Shopping malls need to consider the protection width of the anti-theft system to prevent the width between the supports from being too narrow and affecting the entry and exit of customers. Moreover, shopping malls hope that the entrances and exits are more spacious.

The general installation width of the electromagnetic system is 75-120 cm, and the radio frequency is 90-160 cm.

Types of protection

From the protection scope of the entire department store and supermarket, because Many small commodity packaging papers in supermarkets contain tin foil or metal components. The radio frequency system protection soft label is easy to shield and not alarm. The number of protected goods is relatively small. The electromagnetic system protection type is larger than the radio frequency system.

Price consideration

The price of electromagnetic system anti-theft antenna is higher than that of radio frequency system;

The price of electromagnetic system consumables is much lower than that of radio frequency system consumables;

Installation rules

Site rules

①Provide dedicated power outlets at the management desk. Parallel to ground wire

Installation rules:

①Pipeline embedded: use embedded 25PVC pipe. Double-core shielded wire for detection door and power supply.

②Cutting the ground: After putting the shielding wire in the ground cut, make sure that the ground and the metal U-shaped groove are in a horizontal plane. And it is necessary to ensure that there is no leakage or collapse.

③Arc-shaped metal wire slot: make sure that the wire slot is pasted on the ground and wiped clean and then fixed, and the direction of the wire slot is in an I-shape with the two anti-theft antennas.

Remarks: At the connection line between the device and the host or power supply, the straight line ensures that the wire trough is flat and straight, and the corners should follow the 45-degree relative connection line.


Training for staff:

①Correct paste of anti-theft consumables and precautions

②Anti-theft auxiliary equipment Normal use: For example: the correct use of the degausser, common problems, etc.

③Normal use and precautions of the equipment

④Common faults and simple troubleshooting

⑤The correct handling form after the equipment alarms

System introduction

The EAS-MRP system covers the business management content involved in the manufacturing field: product production data, sales order management, Material demand planning, procurement management, warehouse management, production operation management, quality management, current account management, corporate fund management, financial management, and cost accounting.

By introducing the EAS-MRP system, the enterprise incorporates the main business links of the enterprise into the scope of information management, integrates the logistics, capital flow and information flow of the internal operation of the enterprise, integrates the internal transaction processing of the enterprise, and establishes a comprehensive, efficient, A management platform that adapts to the rapid development of enterprises, and at the same time lays a solid application foundation for the subsequent in-depth application of the MRP system and the expansion of informatization of enterprises to external supply chain partners.

System selection

How should merchants choose electronic anti-theft system (EAS) for commodities? We think it can be considered from the following aspects.

1 System design

After knowing that 70% of the anti-theft effect of EAS comes from deterrence, choose the correct system design scheme according to the mall layout and business conditions to achieve the best anti-theft Effect and price ratio. Generally speaking, convenience stores, specialty stores, specialty stores, including clothing stores, audio-visual stores, and other stores with a business area of ​​several hundred square meters, adopt the method of total export inspection and protection. However, large-scale comprehensive supermarkets, shopping centers, warehouse-style shopping malls, etc., are suitable for the use of cashier channel detection and protection methods, similar to the installation methods of Carrefour stores. Both methods can control the anti-theft investment per unit of business area, including equipment investment and loss prevention personnel, within a certain range, and the anti-theft deterrence effect can be significantly increased. According to our experience, the investment of EAS anti-theft equipment per square meter of business area is controlled within 100 yuan. The larger the business area, the lower the equipment investment cost.

2Important indicators for measuring the performance of EAS equipment

The physical technology applied by EAS is divided into the three most commonly used types: radio frequency technology, acousto-magnetic technology, and electromagnetic technology. But not every physical technology is perfect, they have their inherent advantages and disadvantages. The detection rate and false alarm rate of the system are the two most important indicators to measure the performance of the technology and equipment. The detection rate refers to the ability of the EAS detection antenna to detect tags of a certain size within the designed installation width. The field distribution of the detection antenna is not uniform, and the detection rate of a normal system should be above 85%. The concept of false alarm rate has always been relatively vague. The explanation that is usually more suitable for shopping malls is: the number of false alarms generated by the detection antenna in a unit of time due to the influence of the environment or non-anti-theft tag objects under normal use. In daily real life, objects with similar physical characteristics to electronic anti-theft tags can often be found, and when the object passes through the detection antenna, false alarms will inevitably be generated. In terms of the false alarm rate, shopping malls are often the easiest to be misled by equipment suppliers. EAS of any technology, its false alarms cannot be zero.

3 Technical advancement

To improve the absolute indicators of EAS detectors: that is, the detection rate is high, and the false alarm rate Low, only the EAS with real smart digital technology can meet the requirements. This technology uses the analog signal received by the EAS antenna to perform high-speed A/D conversion, and the digital signal is processed by a computer, using artificial intelligence to identify the characteristics of the electronic tag. Only EAS with this intelligent digital technology can be used in various electromagnetic environments, which can improve the detection rate of the system and reduce false alarms. Only a few companies in the world have this technology. It is very gratifying that, at the Beijing International Business Facilities Exhibition on March 21-23, 2000, Shenzhen Proma took the lead in launching products with this technology in China. This has brought good news to our entire retail industry in terms of commercial loss prevention.

4 price factors

The price of EAS equipment is a very important factor. More and more self-selected shopping malls have considered EAS as a necessary facility. At the same time, they are also very concerned about the investment in EAS equipment and the return on the actual anti-theft effect. Shenzhen Proma's EAS equipment leasing plan for chain commercial enterprises can meet the needs of most chain commercial enterprise customers for commercial loss prevention facilities. It is also a concrete manifestation of the company's corporate mission to contribute to the domestic retail industry.

5 System Technology Compatibility

When we choose EAS equipment, don't forget its compatibility. There are two aspects to pay attention to here: First, if we are a commercial chain company, we must pay attention to the use of EAS devices with the same physical characteristics in each store. This will bring convenience and benefits to future label purchases, system maintenance, and upgrades. Second, when shopping malls use EAS equipment, one of the most important expenses is the long-term purchase of consumable materials. We must remind all merchants to pay attention to the choice of EAS technology compatibility to avoid the market monopoly of anti-theft tags and the increased cost of anti-theft tags.

6 System comprehensive supporting capabilities

To choose an EAS supplier, you must consider its system comprehensive supporting capabilities. Because the entire EAS system, in addition to the detector, also includes a soft label decoder and various types of soft and hard labels. If the performance of the soft tag decoder is not good, the soft tag may not be killed accurately, and the customer will cause an alarm when the antenna is detected by the EAS, which will bring embarrassment and unfavorable situation to customers and businesses. The decoding speed of the soft label decoder is also a comprehensive consideration. A good soft label decoder should have the characteristics of scanning frequency bandwidth, high decoding height and fast decoding speed. Soft labels are still mainly imported. Domestic soft labels with some physical technologies have begun to be produced, and their performance needs to be substantially improved. When shopping malls, pay attention to the phenomenon of shoddy goods. The performance indicators of hard tags are often overlooked. When purchasing, pay attention to its tensile strength and Q value, as well as whether the steel nails are easily rotated out (mainly for non-slotted light nails). Hard labels with poor quality are more likely to be destroyed. Therefore, when selecting an EAS equipment supplier, its comprehensive system capabilities should be considered.

7 Product standards and quality system

EAS industry is a small but emerging industry. Some manufacturers, especially some domestic manufacturers, often ignore their product standards and quality systems. The products they produce have neither product standards nor quality assurance. Who dares to use such products? When we choose EAS, we can no longer blindly listen to the self-introduction of suppliers. We must examine their product standards and quality systems. Including the quality system of engineering installation.

8 Experienced and long-term stable and high-quality service system

Businessmen who have used EAS know that EAS is a project with relatively high service requirements. The equipment cannot work normally, which immediately leads to an increase in the loss of goods. Misreports of equipment can cause embarrassment to customers, and serious consequences such as customer complaints, media exposure, and legal proceedings to merchants.

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