KR100916712B1 - How to recognize RDF system and tag information to manage inventory, security and theft of products - Google Patents

Abstract

A radio frequency identification (RFID) system and a tag information recognition method for managing inventory, security, and theft of a product are disclosed. Here, the RFID system includes an event signal receiver for receiving an event signal and an RFID reader for recognizing tag information when the event signal is received. At this time, the event signal receiving unit may receive the event signal through the associated access control system, the access control system checks the entrance of a person or thing using a sensor for a predetermined space when the entry occurs. The event signal may be transmitted to the event signal receiver or the event signal may be transmitted to the event signal receiver at predetermined intervals. The RFID system may further include an RF switch unit configured to select a plurality of area antennas for receiving RF information of the allocated area and an antenna for each area by switching the plurality of area antennas, and the RFID reader. The tag information may be recognized when the event signal is generated through the antennas of the plurality of regions in the order of selection through the RF switch unit.

RFID (Radio Frequency IDentification), Tag Information, Access Control System, Switch

Description

RADIO FREQUENCY IDENTIFICATION SYSTEM FOR MANAGING STOCK, PRESERVATION AND BURGLARY ABOUT GOODS AND METHOD FOR RECOGNIZING TAG INFORMATION}

RFID is a technology for processing information of an object using a small semiconductor chip. A RFID is a non-contact recognition system that transmits and processes information of an object and surrounding environment information at a radio frequency by attaching a small chip to various items. RFID, which consists of an RFID reader with a read / decode function and an RF tag with unique information, operating software, and a network, RFID processes information by identifying a thin flat tag attached to an object.

Such RFID does not have to be in direct contact or scanning in the visible band as a bar code. Because of these advantages, it is evaluated as a technology to replace the bar code, and the scope of application is expanding. Low frequency identification systems (30 kHz to 500 kHz) are used at short distances of less than 1.8 m, while high frequency systems (850 MHz to 950 MHz or 2.4 GHz to 2.5 GHz) are capable of transmission over long distances of more than 27 m. That is, RFID is a system that recognizes the information of the RFID tag within a few meters by processing the data by connecting the antenna to the RFID reader.

1 is an example for explaining an RFID system in the prior art. When the RFID reader 101 requests the tag information included in the RFID tag 102 from the RFID tag 102, the RFID reader 102 uses its own power source or transmits a transmission signal according to the tag information request as an operation power source. The tag information is transmitted to the RFID reader 101 by using the tag information, and the tag information is received by the RFID reader 101.

However, such a prior art RFID system keeps track of a product's inventory while always operating, and immediately updates the product's inventory if there is a change. However, in the case of applying such a prior art RFID system to a warehouse that is loaded with a lot of products, the number of RFID readers required increases, and there is a problem of collision of the RFID reader period. In addition, additional equipment for managing a large number of readers is also required proportionately, resulting in a problem that is very complicated and more expensive.

According to the present invention, RFID readers do not always operate, and operate only for a certain period or a specific event to recognize tag information, so as to grasp and compare data before and after the time of arrival and departure of products, and more efficiently determine whether the products are in stock and flow. Provide an RFID system that can be identified.

The present invention is linked to the access control system for detecting the entry of a person or thing through a sensor to recognize the tag information in the RFID reader when the entry of the person or the object is detected, and the data before and after the entry of the person or the object By comparing the data and updating the inventory provides an RFID system that can determine whether the product inventory and flow.

The present invention provides an RFID system that is more efficient and can reduce costs by recognizing the tag information in a single RFID reader by switching a plurality of area-specific antennas that receive RF information of an allocated area.

The present invention is to request the grasp of the inventory status in the security equipment or sensor by using a cycle of the battery status report that is periodically performed to report the status of the battery in a wireless sensor network, such as an infrared sensor, the product every periodic time Provides an RFID system that can update the inventory status of the company.

The present invention analyzes the image received from the photographing device in the linked image analysis system to prevent theft by recognizing the tag information of the product in accordance with the event signal transmitted when the amount of variation of the product is more than a certain amount by identifying the inventory of the product And it provides an RFID system that can determine inventory.

The present invention provides an RFID system for recognizing tag information of a product according to an event signal received when a vibration sensor or a pressure sensor attached to a product or a shelf detects occurrence of vibration or pressure change. to provide.

Radio frequency identification (RFID) system according to an embodiment of the present invention includes an event signal receiving unit for receiving an event signal and an RFID reader for recognizing tag information when the event signal is received. In this case, the event signal receiving unit may receive the event signal through the associated access control system.

According to an aspect of the present invention, the access control system checks the entrance of a person or thing using a sensor for a predetermined space, and transmits the event signal to the event signal receiving unit when the entry occurs, or pre-selected The event signal may be transmitted to the event signal receiver every cycle. In this case, the predetermined period may use the battery status report period of the sensor included in the access control system.

According to an aspect of the present invention, the RFID system further includes a plurality of area antennas for receiving the RF information of the allocated area and an RF switch unit for selecting one area antenna by switching the plurality of area antennas. can do. Here, the RFID reader may recognize the tag information received through the plurality of area-specific antennas in the order of selection through the RF switch unit when the event signal is generated, wherein the tag information is information about a product. Each product can be included in an attached RFID tag.

According to one aspect of the invention, the event signal receiving unit may receive the event signal through the associated image analysis system, the image analysis system receives the image of the product from the photographing device for shooting the state of the product By analyzing the amount of change of the amount of the product, and if the amount of change is a certain amount or more, the event signal may be transmitted to the event signal receiving unit.

According to an aspect of the invention, the RFID system may further include a tag information comparison unit for comparing the tag information recognized through the RFID reader and previously registered tag information. That is, the RFID system compares the tag information with the previous tag information through the tag information comparison unit, thereby identifying the stock of the product or confirming the theft. The RFID system may further include a product access checker configured to compare first tag information recognized by the first RFID reader, which is the RFID reader, and second tag information recognized by the second RFID reader, which is an RFID reader installed at an entrance or a cash register. The first and second tag information may also be compared through the product access check unit to check the stock of the product or determine whether the product is stolen.

According to one aspect of the invention, the event signal receiving unit may receive the event signal through a sensor attached to the product or shelf, the sensor is a vibration sensor or a pressure sensor when detecting the vibration or pressure fluctuations of the event signal The event signal can be transmitted to the receiver.

According to the present invention, the RFID reader does not always operate, and operates only for a certain period or a specific event to recognize tag information, so as to identify and compare data before and after the time point at which the product is shipped and received, and to determine whether the product is in stock and flow. I can grasp it efficiently.

According to the present invention, the RFID reader recognizes the tag information when the entry is detected by interlocking with an access control system that detects the entry or exit of a person or a thing through a sensor, and the data before the entry or exit of the person or the thing. By comparing data afterwards and updating the inventory, it is possible to determine whether the product is in stock and flow.

According to the present invention, by switching a plurality of antennas for each area for receiving the RF information of the allocated area to recognize the tag information in one RFID reader, it is more efficient and can reduce the cost.

According to the present invention, the security device or sensor by using a cycle of the battery status report that is periodically performed to report the status of the battery in a wireless sensor network, such as an infrared sensor, so as to request the grasp of the inventory status every time, The stock status of the product can be updated.

According to the present invention, in the linked image analysis system by analyzing the image received from the photographing device when the amount of change of the product is detected by the tag information of the product according to the event signal transmitted according to the stolen by identifying the inventory of the product Prevention and inventory can be identified.

According to the present invention, when a vibration sensor or a pressure sensor attached to a product or a shelf detects occurrence of vibration or a change in pressure, the inventory of the product may be determined by recognizing tag information of the product according to an event signal received. .

Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Figure 2 is an example showing an overview of the RFID system according to the present invention.

The RFID system 201 may receive an event signal 203 indicating that a certain situation has occurred through a device 202 such as a specific system or a sensor, and when such an event signal 203 is received, an RFID reader Tag 205 may request 206 tag information through RFID 205. In this case, the RFID tag 205 transmits the included tag information 207 to the RFID reader 204 so that the RFID system 201 obtains the tag information 207.

That is, when a large number of products are loaded, such as a warehouse, and the inventory management of the products is necessary, when the RFID system 201 is used, the RFID reader 204 does not always operate, and operates only in a specific situation to maintain inventory. It becomes possible to manage.

For example, the RFID system 201 may be associated with a security system such as an access control system that manages the access of a person or a thing, an operation sensor, a vibration sensor, or a pressure sensor included in the security system. Or the event signal 203 transmitted from the access control system or the sensor confirming that a situation such as the product is moved.

That is, the RFID system 201 receiving the event signal 203 operates the RFID reader 204 to grasp the stock of the product, and compares it with the previous stock to manage the inventory without the RFID reader 204 always operating. Can be performed. In addition, inventory can be identified immediately when a person enters or moves a product, so that theft can be identified.

As described above, the RFID system for identifying the stock of the product in connection with the security system or the device such as the sensor and determining the theft will be described in more detail with reference to FIGS. 3 to 9.

3 is a block diagram illustrating an internal configuration of an RFID system according to an embodiment of the present invention. As shown in FIG. 3, the RFID system 300 includes an event signal receiver 301, an RFID reader 302, an RF switch unit 303, a plurality of region-specific antennas 304, and a tag information comparison unit 305. It may include.

The event signal receiving unit 301 receives an event signal through various systems and devices such as an access control system, a motion sensor, a vibration sensor, a pressure sensor, or an image analysis system. That is, as described above, the RFID system 300 may be configured to operate when the RFID reader 302 does not always recognize tag information, but when a specific situation occurs. For this, the event signal receiver 301 Receives the event signal when the specific situation occurs, it is possible to confirm the occurrence of the specific situation.

The RFID reader 302 recognizes tag information when the event signal is received. To this end, when the event signal is received, the RFID reader 302 switches RF information of an area allocated through the RF switch unit 303 which selects an antenna for each area by switching a plurality of antennas for each area. Tag information may be sequentially received from the plurality of region-specific antennas 304 receiving the. In this case, the tag information is information about a product, and may be included in an RFID tag attached to each product.

The tag information comparison unit 305 compares tag information recognized through the RFID reader 302 with previous tag information registered before an event occurs. That is, the tag information recognized by the RFID reader 302 may be compared with the previous tag information in the tag information comparison unit 305 to update the changed information. In this case, the tag information comparison unit 305 may be selectively included in the RFID system 300. That is, the RFID system 300 recognizes only the tag information according to the event signal, and the tag information comparison unit 305 for storing the previous tag information and comparing the tag information with the previous tag information in the inventory management system. It may be included separately.

As such, the RFID system 300 does not connect all of the RFID readers to the part where the products are displayed or loaded, but instead of the plurality of area-specific antennas 304 through the RF switch unit 303 in one RFID reader 302. The tag information is switched to obtain tag information, and the tag information comparison unit 305 compares the previous tag information to more efficiently manage inventory and reduce the number of RFID readers. Therefore, the collision of the RFID reader period can be reduced and the cost can be reduced by reducing the number of RFID readers. In addition, power saving is possible because the system operates only when an event occurs.

4 is an example of an RFID system interlocked with an access control system according to an embodiment of the present invention.

The access control system 401 is a system for recognizing a situation in which the door is opened and closed 402 or for recognizing an entry of a person or a thing 403, and the RFID system 404 may be associated with the access control system 401. . That is, when the door is opened or closed, the sensor attached to the door informs the access control system 401 of the change in the door using a wired or wireless network.

The access control system 401 may request the RFID system 404 to identify and update the inventory data by transmitting an event signal of the change of the situation. That is, the access control system 401 may be a system that checks the access of a person or a thing using a sensor in a predetermined space and transmits the event signal to the event signal receiver when the access occurs.

For example, the access control system 401 may request the RFID system 404 to check the status of the inventory if it detects a person coming in, and if it detects that the person is going out, the access control system 401 compares the previous data with the previous data. You can request to update the status of the stock.

As such, the RFID system 404 receiving the event signal recognizes the tag information of the product through the RFID reader, and can grasp the change of the inventory by comparing with the previous tag information. Keep track of the latest stock.

5 is an example for explaining a method of recognizing tag information according to an exemplary embodiment of the present invention.

That is, the RFID system switches a plurality of area antennas and a plurality of area antennas for receiving RF information of the allocated area to recognize the tag information of the product through the RFID reader 501, thereby switching one antenna for each area. It may further include an RF switch unit 502 to select. In this case, the RFID reader 501 may recognize the tag information received through the antennas of the plurality of regions in the order of selection through the RF switch unit 502 when the event signal is generated.

In more detail, each of the plurality of area-specific antennas may be assigned to each of the display racks or one of the display racks among the plurality of display racks 503 illustrated in FIG. 5 as an area for receiving RF information, and the RFID reader. In operation 501, the RF switch unit 502 may receive tag information of all products received by switching the plurality of antennas for each region.

Such an RFID system can receive tag information of a product existing in a predetermined space with only one RFID reader, thereby solving a collision problem of an RFID reader period occurring when a plurality of RFID readers are used. . In addition, since the number of RFID readers is reduced and additional equipment for managing the RFID readers is also proportionally reduced, the cost required to build the RFID system can be reduced.

FIG. 6 is an example for describing a method of recognizing tag information for each predetermined stock price according to an embodiment of the present invention. That is, FIG. 6 is an example for describing a method of recognizing tag information through an RFID reader at predetermined cycles in addition to the case where a specific situation occurs.

Since the sensor 601 uses a battery in a wireless sensor network such as an infrared sensor, the state of the battery is basically reported to the main body 602 such as a security device every cycle. That is, when the access control system described above is used as the main body 602 and the sensor 601 using the wireless sensor network is used in the access control system, the RFID system 603 is used for each cycle using the cycle. Send an event signal to request inventory status.

In this case, the event signal may be transmitted from the access control system to the RFID system 603 after receiving the status report of the battery from the sensor 601, or directly from the sensor 601 to the RFID system 603 at each cycle. The event signal may be transmitted.

That is, even if a specific situation such as product arrival and departure for a long time does not occur, the inventory status of the product can be updated at the periodic time difference, thereby preventing theft. At this time, since the frequency used in the wireless sensor network uses 300 ~ 400MHz, interference with the frequency used in the RFID does not occur.

7 is an example of an RFID system interlocked with an image analysis system according to an embodiment of the present invention. That is, FIG. 7 is an example of an RFID system that can identify a stock of a product by using an image or check whether the product is stolen.

In more detail, an image 703 of a product 702 loaded by a photographing device such as a CCTV, CMO or CCD image sensor, a camera, etc. is photographed and transmitted to the image analysis system 704, and the image ( If the variation of the product 702 is greater than or equal to a certain amount by analyzing 703, the RFID system 705 may determine the stock status of the product 702. In addition, it is also possible to directly determine the inventory status through the image obtained by the camera, such as CCTV, CMO or CCD image sensor, camera. The RFID system 705 may be used not only to check the stock state of the product 702 but also to determine whether the product 702 is stolen.

8 is an example of an RFID system for managing inventory using another RFID reader according to an embodiment of the present invention.

Here, the RFID system 801 may include product information 803 for the n products 802 as previous tag information. In this case, when the product 2 804, which is one of the n products 802, is moved and passes through the door or the checkout counter 805, the product 2 (the other RFID reader 806 linked with the door or the checkout counter 805) The tag information of 804 is recognized. Thereafter, the tag information may be transmitted to the RFID system 801, and the RFID system 801 may compare the tag information and the previous tag information with each other to determine whether the inventory status is updated or stolen.

That is, when applied to the RFID system 300 described with reference to FIG. 3, the RFID system 300 recognizes first tag information recognized from a first RFID reader, which is an RFID reader 302, and other RFID installed at an entrance or a checkout counter 805. A product access check unit (not shown) for comparing the second tag information recognized from the second RFID reader, which is the reader 806, may be used to identify and update the stock status of the product and determine whether the product is stolen. In addition, through the second tag information recognized by the doorway or the cash register 805, information such as receipt or receipt of a popular product can be obtained.

9 is an example of an RFID system interlocked with a vibration sensor or a pressure sensor in an embodiment of the present invention. That is, when a vibration or pressure change is detected using the vibration sensor or the pressure sensor 903 attached to the object 901 or the shelf or the showcase 902, the RFID system 904 in the vibration sensor or the pressure sensor 903. ) Can be used to identify inventory.

More specifically, the event signal receiver included in the RFID system 904 may receive the event signal through a sensor attached to the product or shelf, which may be a vibration or pressure sensor as the vibration sensor or pressure sensor 903 described above. By transmitting the event signal to the event signal receiving unit when the change of the detection of the, it is possible to determine the inventory of the product and determine whether theft.

In addition, although the event signal may be directly transmitted from the sensor to the RFID system 904, the event signal may be received through a security system linked with the sensor.

As described above, when using the RFID system according to the present invention, the RFID reader does not always operate, and operates only for a certain period or a specific event to recognize tag information, thereby identifying and comparing data before and after the time point at which the product is shipped and received. You can better understand whether your products are in stock and flow. In addition, by switching a plurality of antennas for each area receiving the RF information of the allocated area to recognize the tag information in one RFID reader, it is more efficient and can reduce the cost.

That is, the RFID reader recognizes the tag information when the entrance is detected by interlocking with an access control system that detects the entrance of a person or a thing through a sensor, and the data before and after the person or the thing are entered. Security device by using the battery status reporting cycle that is periodically performed to report the status of the battery in the wireless sensor network, such as infrared sensors, etc., by checking the inventory and updating the inventory, and whether the product inventory and flow Alternatively, by requesting the sensor to determine the stock status, the stock status of the product may be updated at regular intervals.

In addition, in the linked image analysis system analyzes the image received from the photographing device to recognize the tag information of the product according to the event signal transmitted when the amount of change of the product is a certain amount or more to prevent theft and When the inventory can be identified and the vibration sensor or the pressure sensor attached to the product or the shelf detects the occurrence of the vibration or the change in pressure, the inventory of the product can be identified by recognizing the tag information of the product according to the received event signal. have.

10 is a flowchart illustrating a tag information recognition method according to an embodiment of the present invention.

In step S1010, the RFID system receives an event signal. In this case, the RFID system may be configured to operate only when a specific situation occurs, rather than the RFID reader included in the RFID system to always recognize the tag information, for this purpose, the event when the specific situation occurs By receiving the signal, it is possible to confirm the occurrence of the specific situation.

The RFID system may receive the event signal through at least one of an associated access control system, an image analysis system, and a sensor attached to a product or a shelf. That is, the event control system, the image analysis system, or the sensor may recognize the specific situation, such as the entrance or exit of a person or thing, an image change, or an operation of a sensor, and transmit the event signal to the RFID system.

The access control system may check an entrance of a person or a thing using a sensor in a predetermined space to transmit the event signal when the entry occurs, or transmit the event signal at each predetermined period. In this case, the predetermined period may use the battery status report period of the sensor included in the access control system.

 The image analysis system receives an image of the product from a photographing apparatus for photographing the state of the product, analyzes a variation of the quantity of the product, and transmits the event signal to the event signal receiving unit when the variation is more than a predetermined amount. The sensor may be a vibration sensor or a pressure sensor, and may transmit the event signal when detecting vibration or a change in pressure.

In step S1020, the RFID system recognizes tag information when the event signal is received. To this end, when the event signal is received as shown in FIG. 10, the RFID system selects an antenna for each region by switching a plurality of antennas for each region (S1021), and assigns the antennas for the selected region. Receiving step S1022 and receiving the RF information of the received area and for all the antennas for each area through the switching, the step (S1021) and step (S1023) to repeat the step (S1023) to include in step (S1020) can do. In this case, the tag information is information about a product, and may be included in an RFID tag attached to each product.

In step S1030, the RFID system compares the recognized tag information with previously registered tag information. That is, the RFID system may update the changed information by comparing the recognized tag information with previous tag information.

As such, the RFID system obtains tag information by switching a plurality of antennas for each area in one RFID reader, rather than connecting all of the RFID readers to parts where products are displayed or loaded, and compares them with previous tag information. To manage inventory and reduce the number of RFID readers. Therefore, the collision of the RFID reader period can be reduced and the cost can be reduced by reducing the number of RFID readers.

In step S1040, the RFID system compares the first tag information that is the recognized tag information with the second tag information that is recognized from the RFID reader installed in the doorway or the cash register. That is, it is possible to easily and easily identify and manage the inventory by installing the RFID reader at the entrance or checkout counter and comparing the tag information of the product recognized by the RFID reader with the tag information recognized by the RFID system when the product passes. Become.

Embodiments according to the present invention can be implemented in the form of program instructions that can be executed by various computer means can be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

In the present invention as described above has been described by specific embodiments such as specific components and the like embodiments and drawings, but this is only provided to help a more general understanding of the present invention, the present invention is limited to the above embodiments In other words, various modifications and variations are possible to those skilled in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention. .

1 is an example for explaining an RFID system in the prior art.

Figure 2 is an example showing an overview of the RFID system according to the present invention.

3 is a block diagram illustrating an internal configuration of an RFID system according to an embodiment of the present invention.

4 is an example of an RFID system interlocked with an access control system according to an embodiment of the present invention.

5 is an example for explaining a method of recognizing tag information according to an exemplary embodiment of the present invention.

FIG. 6 is an example for describing a method of recognizing tag information for each predetermined stock price according to an embodiment of the present invention.

7 is an example of an RFID system interlocked with an image analysis system according to an embodiment of the present invention.

8 is an example of an RFID system for managing inventory using another RFID reader according to an embodiment of the present invention.

9 is an example of an RFID system interlocked with a vibration sensor or a pressure sensor in an embodiment of the present invention.

10 is a flowchart illustrating a tag information recognition method according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

300: RFID system

301: event signal receiving unit

302: RFID reader

303: RF switch unit

304: a plurality of antennas for each region

305: tag information comparison unit

Claims (21)

In the RFID (Radio Frequency IDentification) system, An event signal receiver for receiving an event signal; An RFID reader recognizing tag information when the event signal is received; And Tag information comparison unit for comparing the tag information recognized by the RFID reader and previously registered tag information Including, A plurality of area-specific antennas for receiving RF information of the allocated area; And An RF switch unit for selecting one antenna for each area by switching the plurality of antennas for each area More, When the event signal is received, the RFID reader receives and recognizes the tag information, which is the RF information, in the order selected by the RF switch unit from the plurality of area-specific antennas. The method of claim 1, And the event signal receiver receives the event signal through an associated access control system. The method of claim 2, And the access control system checks the access of a person or a thing using a sensor in a predetermined space and transmits the event signal to the event signal receiving unit when the access occurs. The method of claim 2, And the access control system transmits the event signal to the event signal receiving unit at predetermined intervals. The method of claim 4, wherein The predetermined period is an RFID system, characterized in that the battery status reporting period of the sensor included in the access control system. delete delete The method of claim 1, The tag information is information about a product, the RFID system, characterized in that included in the RFID tag attached to each product. The method of claim 1, And the event signal receiving unit receives the event signal through an associated image analysis system. The method of claim 9, The image analysis system receives an image of the product from a photographing apparatus for photographing a product, analyzes a variation of the quantity of the product, and transmits the event signal to the event signal receiving unit when the variation is more than a predetermined amount. RFID system, characterized in that. The method of claim 1, Product access check unit for comparing the first tag information recognized by the first RFID reader which is the RFID reader and the second tag information recognized by the second RFID reader which is an RFID reader installed at an entrance or a cash register. RFID system further comprising. The method of claim 1, The event signal receiving unit receives the event signal from a sensor attached to the product or shelf, The sensor is a vibration sensor or a pressure sensor, the RFID system, characterized in that for transmitting the event signal to the event signal receiving unit when detecting a change in vibration or pressure. In the tag information recognition method in an RFID system, Receiving an event signal; And Recognizing tag information when the event signal is received Including, Recognizing tag information when the event signal is received, Switching a plurality of antennas for each region to select one antenna for each region; And Receiving RF information of an area allocated to the antenna for each selected area; Including, Recognizing the tag information, When the event signal is received, the tag information recognition method, characterized in that for receiving the tag information that is the RF information in the order selected by the switching from the plurality of area-specific antennas. The method of claim 13, The step of receiving an event signal, And receiving the event signal through at least one of an associated access control system, an image analysis system, and a sensor attached to a product or a shelf. The method of claim 14, The access control system checks the access of the person or thing using a sensor in the predetermined space to transmit the event signal when the entry or exit, or transmits the event signal every predetermined period Information recognition method. The method of claim 14, The image analysis system receives an image of the product from a photographing apparatus for photographing a state of a product, analyzes a variation of the quantity of the product, and transmits the event signal to the event signal receiving unit when the variation is more than a predetermined amount. Tag information recognition method, characterized in that. The method of claim 14, The sensor is a vibration sensor or a pressure sensor, tag information recognition method characterized in that for transmitting the event signal when detecting the vibration or the change in pressure. delete The method of claim 13, Comparing the recognized tag information with previously registered tag information Tag information recognition method further comprising. The method of claim 13, Comparing the first tag information, which is the recognized tag information, with the second tag information recognized from an RFID reader installed at an entrance or a checkout counter. Tag information recognition method further comprising. A computer-readable recording medium in which a program for executing the method of any one of claims 13 to 17, 19 or 20 is recorded.

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