KR20050080563A - System and method for party member search in a area using extended rfid tag - Google Patents

Abstract

The present invention relates to a system and method for location search of a floating target using RFID, which performs data transmission and reception for registration of a unique tag ID through near field communication of an internal tag, and drives a battery for long distance communication. An RFID tag 10 which periodically transmits a tag position signal by an internal RF transmission / reception antenna as a power source; An entrance registration terminal 20 which receives each tag ID through short-range communication and sets it as one entrance group and transmits it to the outside when the entrance user group having the RFID tag 10 enters the space; Installed in the space, receiving the tag position signal periodically transmitted in the space by the RFID tag 10, extracting the corresponding tag ID, and capturing information obtained by adding the tag acquisition time data and the antenna unique ID to the corresponding tag ID information. Generating at least one cell antenna 30 to be transmitted to the outside; And receiving the setting information of the entrance group through the access registration terminal 20 to register the tag ID of the entrance group, receiving and storing tag capture information transmitted from the cell antennas 30, and storing the tag ID information in a specific tag ID. Detaching situation of the entry group member by calculating the position in the space of the RFID tag 10 having the corresponding tag ID through the acquisition tag ID, the acquisition time data, and the acquisition antenna position which are the tag acquisition information of the cell antenna 30 It characterized in that it comprises a; operation management server 50 to perform the management and location search service.

Description

System and method for location search of floating target using extended RIFID {SYSTEM AND METHOD FOR PARTY MEMBER SEARCH IN A AREA USING EXTENDED RFID TAG}

The present invention relates to a system and method for location search of an extended floating target using RFID. More particularly, the present invention relates to a visitor who enters a specific space and has a tag that periodically outputs a radio recognition frequency and installed in the space. By capturing the signal output periodically from the tag through multiple cell antennas, the location of the tag holder is accurately analyzed by the installation location information and signal acquisition time of the cell antennas that capture the visitors, and the location of the tag holder is searched in real time. The present invention relates to a spatial location search system and method for a floating target using an extended RFID that can provide a service and accumulate realistic and realistic moving flow data of visitors in the space.

Radio frequency identification (RFID) technology incorporates the use of electromagnetic or electrostatic coupling within the radio frequency of the electromagnetic spectrum to identify objects, animals or humans. It does not require direct contact or scanning in the visible band. Due to the lack of an advantage, it is increasingly used in the industry as a technology to replace the barcode.

This RFID system consists of three components: an antenna transceiver and a tag, also called a transponder. The antenna uses radio frequency propagation to carry a signal to activate the transponder. When the transponder is activated, the transponder transmits the data it has to the antenna. This process can range from as simple as passing through a door to something as complex as a database-driven sales transaction.

Depending on the frequency used, low frequency RFID systems using 30KHz to 500KHz are used in short transmission areas of about 1.8m or less, while high frequency RFID systems using 850KHz to 950KHz and 2.4GHz to 2.5GHz provide long range transmission capability.

On the other hand, in modern society, families often go out on weekends, holidays, and vacations, or they often find crowded places such as amusement parks, parks and department stores. In crowded places such as these, it is not uncommon to find a child accompanied by some careless care of parents.

Indeed, because children are curious and not fully formed, their perceptions are easily out of the caregiver's reach in places where a large number of crowds gather at once or in places unfamiliar to them, and many children become lost.

Currently, large-scale amusement facilities offer a variety of services to find a lost child in case of such loss.

In fact, such a conventional child-finding service registers information about a child in advance in a child-protection center through a communication network, and then attaches a tag with a barcode and a serial number to the registered child. After that, if a child who has registered with a child prevention center becomes an actual child, when the parent contacts the child prevention center, the child's occurrence and registered information will be notified to the terminal of mobile helpers distributed in a certain area. The helpers followed the information and found Mia.

However, since the conventional method is a service that can be serviced only in the area where the mobile helpers are arranged in advance, if the child is out of the area where the helpers are arranged, the missing child cannot be found. Even if they exist within, the exact location of the lost child could not be known, resulting in serious labor wastes, time delays, and low matching success rates that helpers have to look through a specific area.

The present invention is to solve the above problems, the purpose is to set the visitors entering a specific space as a related group and to have a tag that periodically outputs the radio recognition frequency to each group members installed in the space By capturing the signal output periodically from the tag through multiple cell antennas, the current position of the tag holder is accurately analyzed by the installation location information and the signal acquisition time of the cell antennas that capture the visitors. In-spatial location search system of floating target using extended RFID which can predict and real-time processing and provide location search service for group abandoners and also accumulate actual and realistic movement flow data of visitors in space. To provide a way.

According to an aspect of the present invention, an intra-space location search system using an extended RFID according to an aspect of the present invention performs data transmission and reception for registration of a unique tag ID through near field communication of an internal tag. RFID tag 10 which periodically transmits a tag position signal by an internal RF transmission / reception antenna as a driving power source of a battery for long distance communication; An entrance registration terminal 20 which receives each tag ID through short-range communication and sets it as one entrance group and transmits it to the outside when the entrance user group having the RFID tag 10 enters the space; Installed in the space, receiving the tag position signal periodically transmitted in the space by the RFID tag 10, extracting the corresponding tag ID, and capturing information obtained by adding the tag acquisition time data and the antenna unique ID to the corresponding tag ID information. Generating at least one cell antenna 30 to be transmitted to the outside; And receiving the setting information of the entrance group through the access registration terminal 20 to register the tag ID of the entrance group, receiving and storing tag capture information transmitted from the cell antennas 30, and storing the tag ID information in a specific tag ID. Detaching situation of the entry group member by calculating the position in the space of the RFID tag 10 having the corresponding tag ID through the acquisition tag ID, the acquisition time data, and the acquisition antenna position which are the tag acquisition information of the cell antenna 30 It characterized in that it comprises a; operation management server 50 to perform the management and location search service.

Preferably, the RFID tag 10 includes a passive tag 13 for transmitting and receiving data and function control data related to registration of a tag ID through short-range communication; RF transceiver 14 which transmits a tag position signal informing its position through long distance communication periodically according to the function control data received from the passive tag 13 and receives tag state control data from the cell antenna 30. ); A status indicator LED (12) flashing to indicate group departure or group call status of the corresponding RFID tag (10) according to the tag status control data received from the RF transceiver (14); A control unit (11) for connecting the passive tag (13), the RF transceiver (14), and the status display LED (12) to perform a function control; And a battery 15 providing driving power for performing the functions of the units 11, 12, 13, and 14. Characterized in that it comprises a.

More preferably, it is installed and operated at a specific location in the space, and transmits the tag ID of the search requester received through short-range communication according to the group member location search request of the visitor to the operation management server 50 to And a location display terminal 40 which receives the current location information of the admission group member and provides it to the search requester.

More preferably, in order to calculate the exact location of the user in the space, the operation management server 50 first uses the location information of the cell antennas 30 that captured the same RFID tag 10 in the same time zone. The approximate position of the position, and calculates by substituting the degree of difference in the acquisition time of the cell antenna 30 which respectively captured the same tag position signal of the corresponding RFID tag 10 by the approximate degree of each cell antenna of the user, thereby identifying the actual user. Accurate distance data close to the cell antenna 30 may be calculated.

More preferably, the access registration terminal 20 is installed in the entrance that is in charge of the entrance to the space, and when the space users enter the control data to the corresponding RFID tag 10 by the periodic of the RFID tag 10 The tag position signal transmission function is turned on, and upon exiting, the tag position signal transmission function is turned off by transmitting control data to the corresponding RFID tag 10.

More preferably, the tag position signal periodically transmitted from the RFID tag 10 is characterized in that the transmission at 10 second intervals.

More preferably, the cell antenna 30 is characterized in that it is additionally installed in the street light in the space to be applied.

On the other hand, the present invention, in order to perform a location search in the space of the floating target using the extended RFID, (a) each tag ID and associated with respect to the entry group that the operation management server enters the space from the access registration terminal Receiving the information and setting it as one entrance group and storing the information in the data storage device (S10); (b) receiving, by the operations management server, acquisition information including the captured tag ID, the acquisition time data, and the acquisition antenna ID from the cell antennas, and storing the acquisition information in the data storage device (S20); (c) the operation management server extracts capture information of cell antennas that capture the same RFID tag in the same time zone, and time zones of the RFID tag through location information of the capture group cell antennas and capture time information of the corresponding capture group cell antennas; Calculating and storing an accurate position (S30); (d) If a specific user falls more than a predetermined distance from the admission group through the location information of the members of the admission group, the operation management server classifies the user as an expected group departure and transmits the information about the expected group departure to the location display terminal. Transmitting tag state control data informing of the group departure state through the cell antenna to the RFID tag of the expected group leaver (S40-S50); (e) When the operation management server receives a location search request signal for requesting information on the current location of a group defector from the location display terminal, a corresponding requester obtained by accessing his RFID tag to the location display terminal. Receiving tag ID information of a search requester (S60-S70); (f) the operation management server extracts the group members of the search requester, retrieves the accumulated position information of the group member, transmits the group information to the location display terminal, and notifies the group member call through the cell antenna with the RFID tags of the group members. Transmitting tag state control data (S80); And (g) receiving, by the operation management server, each tag ID and related information for the entrance group leaving the corresponding space from the access registration terminal and releasing the registration setting of the corresponding tag ID; Characterized in that it comprises a.

Preferably, in the step (c), the operation management server sets up one or more cell antennas that capture the same RFID tag in the same time zone among the acquisition information stored in the tag acquisition information DB as one acquisition group. Step S31; Extracting, by the operation management server, information on the cell antenna acquisition time of each of the installation location information and the tag location signal in which the acquisition group cell antennas are installed (S32); Calculating, by the operations management server, an approximate location at which the user is located at a corresponding time zone through installation location information of the capture group cell antennas extracted (S33); And calculating, by the operation management server, a detailed position of the user by converting the proximity degree of the RFID tag to the capture group cell antenna through the capture time information of the extracted capture group cell antennas (S34-S35). Characterized in that.

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

Hereinafter, the present invention sets a group of visitors entering a specific space into a related group, has a tag that periodically outputs radio recognition frequencies to each group member, and periodically outputs from the tag through a plurality of cell antennas installed in the space. Precise and real-time processing of group departures for a particular tag holder by searching the location of the cell antennas that captured the visitors, and the acquisition time of the signal antennas. In the preferred embodiment, the present invention will describe a system and method for positioning a floating target in space using an extended RFID that can provide a service and accumulate realistic and realistic moving flow data of visitors in the space. The technical spirit of the invention is limited to this Or that is not limited to be practiced with modification by one of ordinary skill in the art is, of course, it varies.

1 is an exemplary view of an information communication system to which the present invention is applied, FIG. 2 is an exemplary view showing an extended RFID tag according to an embodiment of the present invention, and FIG. 3 is an operation management according to an embodiment of the present invention. Figure 4 is an exemplary view showing a server, Figure 4 is a block diagram showing an embodiment in which the location search system in the space of the flow target using the extended RFID of the present invention, Figure 5 is a flow using the extended RFID of the present invention It is a block diagram which shows another Example to which the target position search system was applied.

Location search system in the space of the flow target using the extended RFID to which the present invention is applied RFID tag 10, access registration terminal 20, cell antenna 30, location display terminal 40 and operation management server 50 It consists of.

Referring to Figure 1 in more detail with respect to the location search system and method of the flow target of the floating target using the extended RFID according to an embodiment of the present invention, the space to which the present invention is applied to enter the space Amusement parks, amusement parks, golf courses, department stores, stadiums, swimming pools, construction sites that can be freely moved in various applications.

The RFID tag 10 is a device having a unique and non-replicable ID, and is a personal wearable device that will be carried by each person entering the space. Unlike conventional tag devices, the RFID tag 10 has a function of repeatedly transmitting a predetermined signal at a predetermined time and an extended RFID tag device which turns on / off the output of a transmission signal in a non-contact manner by using an HF or UHF band. It becomes compatible with RFID tags.

As illustrated in FIG. 2, the RFID tag 10 is a passive tag 13 that transmits and receives data related to registration of a tag ID and function control data through short-range communication of an HF or UHF band, and long-distance communication of a UHF band. An RF transceiver 14 that transmits a tag position signal including a tag ID and related data periodically indicating its position through the terminal, and receives tag state control data from the cell antenna 30 to be described later, and the RF transceiver 14 In order to externally display the state of the corresponding RFID tag 10 according to the tag state control data received from) (the state of the RFID tag refers to a group leaving state or a group call state and a detailed description thereof will be described later.) It includes a blinking status display LED 12, and a control unit 11 and a battery 15 for controlling the respective parts (12, 13, 14).

The tag location signal transmitted to the outside through the RF transceiver 14 to inform the current location of the RFID tag 10 includes the corresponding tag ID and related data, and starts and transmits at regular intervals. The stop operation is repeatedly performed, and the output frequency of the tag position signal is determined through the function control data received through the passive tag 13, which is individually determined according to the environment of the space in which the system of the present invention is installed. In the present embodiment, the tag position signal is output at a long distance through the power of its own battery every 10 seconds, but the present invention is not limited to the output frequency exemplified.

The power for outputting the long-range tag position signal periodically transmitted to the RF transceiver 14 to the outside is itself provided by the driving power of the battery 15 therein.

The access registration terminal 20 is a device that is installed in the entrance that is in charge of the entrance to the space, the passive tag 13 of the RFID tag 10 when entering and leaving the user having the RFID tag 10 Receives a tag ID from a non-contact type, and is responsible for setting up and deregistering a corresponding user, while transmitting a function control data for transmitting a tag location signal to the corresponding RFID tag 10 when entering the tag location of the RFID tag 10. The signal transmission function is periodically turned on, and upon exiting, the tag position signal transmission function of the RFID tag 10 is also turned off.

That is, the entrance registration terminal 20 receives the tag ID and the related data from the passive tag 13 of the corresponding RFID tag 10 through the HF or UHF band in a non-contact manner when the user enters the RFID tag 10. Register and transmit it to the operation management server 50 which will be described later to notify the entry of the RFID tag 10 in the space, when the user exits the passive tag 13 of the RFID tag 10 of the HF or UHF The tag ID and related data are received in a non-contact manner through the band to release the registration of the corresponding RFID tag 10 and also transmit the same to the operation management server 50 to notify the space in the space of the corresponding RFID tag 10.

At this time, the access registration terminal 20 is set to the group ID registration by setting the tag ID of the user and the tag ID of the entrance party of the user at the same time when entering the group, for example, of the family user In this case, all of the family members are set as a group, and the tag IDs of all the families are set as one group, and a plurality of RFIDs set as a group by transmitting information about the tag group setting to the operation management server 50 as well. Management of the tag 10 can be made.

In addition to the illustrated family group, such a group may be variously applied to a friend group, a visiting group group, a cheering group, a shopping group, a work team group, etc. according to an environment to which the present invention is applied.

On the other hand, the cell antenna 30 is a device that receives the tag position signal from the RFID tag 10 that initiated the periodic tag position signal transmission operation through the access registration terminal 20 to the size of the space to be installed According to the present invention, the cell antenna 30 receives a tag position signal transmitted from the RF transceiver 14 of the RFID tag 10 through its RF transceiver antenna and is included in the corresponding tag position signal. The tag ID is extracted, and in addition to the tag ID signal, the acquisition time data obtained by capturing the corresponding tag position signal and the antenna ID of the cell antenna itself are added to be transmitted to the operation management server 50 as tag acquisition information.

That is, the cell antenna 30 receives the tag position signal of the RFID tag 10 that is periodically transmitted, extracts the tag ID, and adds the signal acquisition time data and the acquisition antenna ID to configure tag acquisition information. Transmitting to the operation management server 50 performs a data collection operation to be utilized in the user location search of the operation management server 50.

At this time, the cell antenna 30 should be able to capture the tag position signal transmitted from the RF transceiver 14 of the RFID tag 10, bar installation distance and the signal arrival distance of the corresponding RFID tag 10 In consideration of the interference phenomenon, the maximum separation distance between cell antennas is preferably within at least 50m.

An example of the configuration of the cell antenna 30 is shown in FIGS. 4 and 4.

4 is an example of the cell antenna 30 installation configuration in an environment having an irregular and wide application space, such as an amusement park or an amusement park, and in the case of FIG. The example of the cell antenna 30 installation structure is shown.

In addition, when the cell antenna 30 is installed outdoors such as an amusement park or an amusement park, it is preferable that the cell antenna 30 is additionally installed in a street lamp in a space for ease of power supply.

The operation management server 50 collects and manages location data of the RFID tag 10 flowing in the corresponding space through the cell antenna 30, and detects departure of the user's entrance group through the location information of the corresponding user. This information is notified to the location display terminal 40 and the departner, which will be described later. Search for the location of the deviant and perform the function of providing the location information of the deviator through the corresponding position display terminal (40).

That is, the operation management server 50 continuously receives and accumulates acquisition information from the cell antennas 30, and is currently present through acquisition time information, acquisition tag ID information, and acquisition cell antenna information included in the acquisition information. The function of identifying the position of the RFID tags 10.

In addition, by analyzing the location of each of the identified RFID tag 10 to recognize a situation that a particular user falls more than a predetermined distance from the user's entrance group by treating it as a group departure predictor, the position display terminal 40 The management personnel can promptly monitor the situation and cope with the situation, and in addition, the tag state control data is transmitted through the cell antenna 30 so as to recognize the group departure situation. And transmits the status display LED 12 of the RFID tag 10 of the user to blink.

Further, upon requesting a location search for the group defector from the location display terminal 40, the current location information of the group members is transmitted to the location display terminal 40 according to the tag ID of the search requester.

The operation management server 50 is not shown in the central processing unit 51, data storage device 52, a separate wired interface 53, RF transceiver 54 and the drawing as shown in FIG. Non-display device.

Referring to Figure 3 in more detail with respect to the operation management server 50, the central processing unit 51 must be able to perform a large number of mathematical calculations and examine the database at the time of large-scale business processing, mutual information exchange Bars are preferably Intel's 100MHz P54C, Motorola's 120MHz PowerPC604, or Sun Microsystems' 166MHz UltraSPARC-1 series or higher, which are typically designed to be 32-bit and run by a separate operating system.

The data storage device 51 includes a registration tag information DB, a cell antenna information DB, a tag capture information DB, and a management map DB. Generally, the DBs are generated by database management software such as data software manufactured by Oracle Corporation. Used to manage.

The registration tag information DB stores information regarding tag registration and tag group setting according to access of the RFID tag 10 transmitted from the access registration terminal 20.

The cell antenna information DB stores information on antenna IDs of the cell antennas 30 installed in the corresponding space and information on an installation position of each cell antenna.

The tag capture information DB includes information on the captured RFID tag ID, information on the cell antenna acquisition time of the tag position signal, and the captured cell antenna ID, which are captured and transmitted by the cell antenna 30. Acquisition information data including related information and calculated positional information are stored.

The management map DB stores map information in which cell antenna positions and important locations of each region of a space managed in detail are displayed in detail.

The wired interface 53 provides an interface for data communication with the cell antenna 30 and the location display terminal 40. Accordingly, the operation management server 50 displays the cell antenna 30 and the location display. Data communication with the terminal 40 is possible in a wireless manner as well as a wired manner.

The RF transceiver 54 mainly performs a function of receiving tag capture information transmitted periodically from the cell antennas 30 in real time and outputting the data to the CPU 51 after data conversion. A function of transmitting the function control data for call back to all or part of the RFID tag 10 is performed.

On the other hand, the location display terminal 40 is a component that is applied to the MIA or unmanned kiosk in the space, when the space users lost their party (entrance group members) in the space of the location display terminal 40 When the RFID tag 10 is close to the RFID transceiver, the position display terminal 40 receives a tag ID and related data from the corresponding RFID tag 10 through a short range communication method, and connects it to the operation management server 50 connected thereto. And transmits the location information of the group defector retrieved from the operations management server 50 to the search requester.

Looking at the function of the operation management server 50 in response to the group departure search request, the operation management server 50 receives the tag ID information of the search requester requesting a group departure search from the position display terminal 40 The tag IDs of the party set as the search requester and the group are extracted, and through this, the current location information of the admission group members to which the search requester belongs is extracted and transmitted to the corresponding location display terminal 40.

As described above, a method of calculating the current location of the continuously moving users by using the location and the capturing time of the cell antenna 30 capturing the users in the space is based on the location of the cell antennas 30 capturing the corresponding user at the same time. By applying the triangulation method and the principle of proximity as shown in Figs. 4 and 5, first, the approximate approximate position of the user can be calculated.

Then, in the cell antennas 30 which respectively capture the same tag position signal of the user RFID tag 10, the difference in the acquisition time is substituted by calculating the proximity of each cell antenna of the user to calculate which cell the actual user uses. Accurate distance data can be calculated regarding whether the antenna is located closer to the antenna.

Referring to Figure 6 the overall flow of the present invention will be described.

6 is a flowchart illustrating a method for searching a location in space of a floating target using extended RFID according to an embodiment of the present invention.

First, the central processing unit 51 of the operation management server 50 receives each tag ID and related information for the entry group entering the space from the access registration terminal 20 and sets it as one group. By storing in the registration tag information DB of the data storage device 52 performs the step of receiving the ID information and registration setting of the admission group according to an embodiment of the present invention (S10).

At this time, the registration tag information DB stores information on tag registration and tag group setting according to the access of the RFID tag 10 transmitted from the access registration terminal 20, but the present invention is not limited thereto. no.

The central processing unit 51 of the operation management server 50 captures the captured tag ID, the acquisition time data, and the acquisition antenna ID, which are transmitted as the cell antennas 30 capture the tag position signal of the RFID tag 10. Receiving the acquisition information including a and stores it in the tag capture information DB of the data storage device 52 performs the step of receiving and storing the entry group acquisition information according to an embodiment of the present invention (S20).

In this case, the tag capture information DB includes information on the captured RFID tag ID, information on the cell antenna acquisition time of the tag position signal, and the capture cell antenna, which the cell antenna 30 captures and transmits the RFID tag 10. Acquisition information data including information on the ID and calculated positional information are stored, but the present invention is not limited thereto.

The central processing unit 51 of the operation management server 50 extracts capture information of cell antennas that capture the same RFID tag 10 in the same time zone, and extracts location information of the capture group cell antennas and the corresponding capture group cell antennas. Estimating the exact location of each RFID tag by capturing time information and storing the location information in the tag capture DB of the data storage device 52 to calculate the individual location through the capturing information of the cell antenna according to the embodiment of the present invention. And a storage step (S30).

The central processing unit 51 of the operation management server 50 determines whether a particular user has fallen more than a predetermined distance from the admission group to which the user belongs through the RFID tag 10 location information of the members in the admission group. S40).

As a result of the determination in step S40, when the user is separated from the entrance group by more than a predetermined distance, the central processing unit 51 of the operation management server 50 classifies the user as an expected group leaver and displays the location display terminal 40. In step S50, the tag state control data indicating the group departure status is transmitted through the cell antenna 30 to the RFID tag 10 of the user classified as the corresponding group departure.

Accordingly, the management personnel disposed around the position display terminal 40 can immediately identify the expected group escaper can perform a quick management service when the actual group escaper occurs, while the RFID tag 10 of the expected group leaver Receives the tag status control data by the status display LED 12 is blinking so that the user can recognize that the user is away from the entrance group in the distance.

The central processing unit 51 of the operation management server 50 requests the information about the current location of the leaving person in accordance with the occurrence of the group defector from the group of the user included in his admission group from the position display terminal 40 It is determined whether the location search request signal is received (S60).

As a result of the determination in step S60, when the location search request signal is received from the location display terminal 40, the central processing unit 51 of the operation management server 50 requests the search for the corresponding location display terminal 40. The user receives the tag ID information of the corresponding search requester obtained by approaching his RFID tag 10 (S70).

The central processing unit 51 of the operation management server 50 searches the registration tag information DB of the data storage device 52 using the tag ID information of the corresponding search requestor to determine tag IDs of members of the entry group of the corresponding search requestor. Extracts and retrieves current location information of the corresponding group members and transmits them to the corresponding location display terminal 40, and tag state control for informing a group member call to the RFID tag 10 of the corresponding entry group members through the cell antenna 30. Transmit the data (S80).

Accordingly, the RFID tag 10 of the group leaver receives the tag status control data so that the status display LED 12 flashes so that the user can recognize that the user is called from the admission group. It is preferable that the status indicator LED 12 blinking mode regarding the user call state of S80 and the user group departure state of S50 be different from each other for easy state determination of the user.

The central processing unit (51) of the operation management server (50) receives the respective tag ID and related information for the entrance group leaving the space from the access registration terminal (20) and receives the information of the data storage device (52) By canceling the registration setting of the corresponding tag ID stored in the registration tag information DB, the ID information of the egress group according to the embodiment of the present invention is performed and the registration release step is performed (S90).

On the other hand, the step of receiving and storing the entrance group capture information from the cell antenna in step S30 will be described in detail with reference to FIG.

7 is a detailed flowchart illustrating steps of receiving and storing entrance group capture information from a cell antenna according to an embodiment of the present invention.

First, the central processing unit 51 of the operation management server 50 captures at least one cell antenna that captures the same RFID tag in the same time zone among the capture information stored in the tag acquisition information DB of the data storage device 52. 30 are set to one capture group (S31).

At this time, the same time zone is used to capture the tag location signal transmitted by the RFID tag 10 that transmits a tag location signal periodically, and in several cell antennas 30 installed at different locations, the tag location is actually used. When the signal is received, there is a slight difference in acquisition time, and various tag acquisition information having such a small difference in acquisition time is recognized as having captured the corresponding RFID tag 10 in the same time zone.

The central processing unit (51) of the operation management server (50) extracts each installation location information in which the corresponding capture group cell antennas (30) are installed from the cell antenna information DB of the data storage device (52), and captures the tag information. Information about the captured RFID tag ID, which is the acquisition information of the corresponding acquisition group cell antennas 30, and the information about the cell antenna acquisition time of the tag position signal are extracted from the DB (S32).

The central processing unit 51 of the operation management server 50 calculates an approximate position at which the user is located at the corresponding time period through the installation position information of the extracted capture group cell antennas 30 (S33).

The central processing unit 51 of the operation management server 50 calculates the exact position of the user by converting the proximity of the RFID tag to the capturing group cell antenna based on the extracted capturing time information of the capturing group cell antennas 30. It is made (S34).

The central processing unit 51 of the operation management server 50 stores the time-specific location information of the user in the tag capture information DB of the data storage device 52 (S35).

That is, in order to calculate the exact location of the space user in steps S33 and S34, triangulation and proximity are performed as shown in FIGS. 3 and 4 by using the installation location information of the cell antennas 30 that capture the corresponding user at the same time zone. By applying the principle of, we can estimate the approximate location where the user is located.

Next, in the cell antennas 30 which respectively capture the same tag position signal of the missing RFID tag 10, the difference in the acquisition time is substituted by calculating the proximity of each cell antenna of the user to calculate which cell the actual user uses. Accurate distance data can be calculated regarding whether the antenna is located closer to the antenna.

On the other hand, by using the capture information of the users accumulated in the tag capture information DB of the data storage device 52 of the operation management server 50 can easily grasp the actual flow flow of the users using the space, Through the actual movement route, the utilization and popularity of each region in the space can be accurately known, and the data accumulated for various purposes such as customer relationship management (CRM) or remodeling of the space can be utilized. do.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited to drawing.

As described above, the system and method for location search of a floating target using an extended RFID according to the present invention sets up visitors entering a specific space as a related group and periodically assigns radio recognition frequency to each group member. It carries the tag to output and captures the signal that is periodically output from the tag through a number of cell antennas installed in the space, so that the current position of the tag holder can be accurately identified through the installation location information and signal acquisition time of the cell antennas that captured the visitors. By analyzing and predicting the group departure for a specific tag holder and real-time processing, and through the location display terminal, the space user can grasp the position of the member belonging to his / her admission group at any time. Resistant, stable and reliable There is an effect of enabling the space operation.

In addition, the tag capture information transmitted from the cell antenna can be used to easily grasp the actual flow flow of the users using the space, so that accurate data of utilization and popularity of each region in the space can be analyzed. It is also possible to utilize the data accumulated for various purposes such as relationship management (CRM) or remodeling of the space.

1 is an exemplary view of an information communication system to which the present invention is applied.

2 is an exemplary view illustrating an extended RFID tag according to an embodiment of the present invention.

Figure 3 is an exemplary view showing an operation management server according to an embodiment of the present invention.

Figure 4 is a block diagram showing an embodiment in which the position search system in the space of the flow target using the extended RFID of the present invention is applied.

Figure 5 is a block diagram showing another embodiment to which the location search system in the space of the flow target using the extended RFID of the present invention is applied.

FIG. 6 is a flowchart illustrating a method for searching a location in space of a floating target using extended RFID according to an embodiment of the present invention. FIG.

FIG. 7 is a detailed flowchart illustrating an individual location estimation and storage step through capture information of a cell antenna according to an exemplary embodiment of the present invention. FIG.

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

10: RFID tag 11: control unit

12: status display LED 13: passive tag

14: RF transceiver 15: Battery

20: access registration terminal 30: cell antenna

40: location display terminal 50: operation management server

51: central processing unit 52: data storage device

53: wired interface 54: RF transceiver

Claims (9)

RFID tag which performs data transmission / reception for registration of unique tag ID through short range communication of internal tag and periodically transmits tag position signal by internal RF transmitting / receiving antenna by driving power of its own battery for long distance communication. 10); An entrance registration terminal 20 which receives each tag ID through short-range communication and sets it as one entrance group and transmits it to the outside when the entrance user group having the RFID tag 10 enters the space; Installed in the space, receiving the tag position signal periodically transmitted in the space by the RFID tag 10, extracting the corresponding tag ID, and capturing information obtained by adding the tag acquisition time data and the antenna unique ID to the corresponding tag ID information. Generating at least one cell antenna 30 to be transmitted to the outside; And Receives the setting information of the entrance group through the access registration terminal 20 to register the tag ID of the entrance group, and receives and stores tag capture information transmitted from the cell antennas 30, for a specific tag ID Manage the group departure status of the admission group member by calculating the position in the space of the RFID tag 10 having the corresponding tag ID based on the acquisition tag ID, the acquisition time data, and the acquisition antenna position which are the tag acquisition information of the cell antenna 30. And an operation management server (50) for performing a location retrieval service. The method of claim 1, The RFID tag 10, A passive tag (13) for transmitting and receiving data relating to registration of the tag ID and function control data through short-range communication; RF transceiver 14 which transmits a tag position signal informing its position through long distance communication periodically according to the function control data received from the passive tag 13 and receives tag state control data from the cell antenna 30. ); A status indicator LED (12) flashing to indicate group departure or group call status of the corresponding RFID tag (10) according to the tag status control data received from the RF transceiver (14); A control unit (11) for connecting the passive tag (13), the RF transceiver (14), and the status display LED (12) to perform a function control; And A battery 15 for providing a driving power for performing the functions of the units 11, 12, 13, 14; Position search system in the space of the floating target using the extended RFID tag, comprising a. The method of claim 1, It is installed and operated at a specific location within the space, and transmits the tag ID of the search requester received through short-range communication to the operation management server 50 according to the location search request for the group member of the visitor, thereby admitting the admission group member of the search requester. Position location terminal 40 for receiving the current position information for the search request to provide the corresponding requestor; In-space position search system of the floating target using the extended RFID. The method of claim 1, In order to calculate the exact location of the user in the space, the operation management server 50 first uses the location information of the cell antennas 30 that capture the same RFID tag 10 in the same time zone to determine an approximate location where the corresponding user is located. By calculating and calculating the difference in the capturing time of the cell antennas 30, which respectively capture the same tag position signal of the RFID tag 10, by calculating the proximity of each cell antenna of the user, the actual user can determine the specific cell antenna 30. An intra-space location retrieval system of a floating target using extended RFID, which calculates accurate distance data close to the. The method of claim 1, The access registration terminal 20 is installed at the entrance that is in charge of the access to the space, and transmits the control data to the corresponding RFID tag 10 when the space users enter the periodic tag position signal transmission function of the RFID tag 10 Turn on, and at the time of exiting the position tracking system of the floating target using the extended RFID, characterized in that to transmit the control data to the corresponding RFID tag (10) to turn off the tag position signal transmission function. The method of claim 1, The tag location signal periodically transmitted from the RFID tag (10) is transmitted in 10 seconds intervals, characterized in that the location search system in the space of the floating target using the extended RFID. The method of claim 1, The cell antenna (30) is located in the space applied in the street lamp in the space target search system of the floating target using the extended RFID. (a) receiving, by the operation management server, each tag ID and related information about an entry group entering the corresponding space from the access registration terminal, and setting them as one entry group and storing them in the data storage device (S10); (b) receiving, by the operations management server, acquisition information including the captured tag ID, the acquisition time data, and the acquisition antenna ID from the cell antennas, and storing the acquisition information in the data storage device (S20); (c) the operation management server extracts capture information of cell antennas that capture the same RFID tag in the same time zone, and time zones of the RFID tag through location information of the capture group cell antennas and capture time information of the corresponding capture group cell antennas; Calculating and storing an accurate position (S30); (d) If a specific user falls more than a predetermined distance from the admission group through the location information of the members of the admission group, the operation management server classifies the user as an expected group departure and transmits the information about the expected group departure to the location display terminal. Transmitting tag state control data informing of the group departure state through the cell antenna to the RFID tag of the expected group leaver (S40-S50); (e) When the operation management server receives a location search request signal for requesting information on the current location of a group defector from the location display terminal, a corresponding requester obtained by accessing his RFID tag to the location display terminal. Receiving tag ID information of a search requester (S60-S70); (f) the operation management server extracts the group members of the search requester, retrieves the accumulated position information of the group member, transmits the group information to the location display terminal, and notifies the group member call through the cell antenna with the RFID tags of the group members. Transmitting tag state control data (S80); And (g) receiving, by the operation management server, each tag ID and related information for the entry group leaving the corresponding space from the access registration terminal and releasing registration setting of the corresponding tag ID; Location search method in the space of the flow target using the extended RFID comprising a. The method of claim 8, In step (c), Setting, by the operations management server, at least one or more cell antennas which capture the same RFID tag at the same time period among the capture information stored in the tag capture information DB (S31); Extracting, by the operation management server, information on the cell antenna acquisition time of each of the installation location information and the tag location signal in which the acquisition group cell antennas are installed (S32); Calculating, by the operations management server, an approximate location at which the user is located at a corresponding time zone through installation location information of the capture group cell antennas extracted (S33); And Calculating and storing the detailed location of the user by converting the proximity of the RFID tag to the capturing group cell antenna through the capturing time information of the capturing group cell antennas extracted by the operation management server (S34-S35); A location search method in space of a floating target using an extended RFID.