KR20070091876A - Entrance and exit control system using radio frequency identification - Google Patents

Abstract

A system for controlling entry with RFID(Radio Frequency IDentification) is provided to precisely control moving of a visitor by tracking a position of the visitor and generating a moving pattern, as a plurality of RFID readers transmitting local ID information are arranged in a building and a management server displays the location of the visitor holding an RFID tag by interpreting the local ID information. A plurality of RFID tags(110) transmit tag ID information including ID information assigned to each visitor. The plural RFID readers(120) are arranged to each block(B) sectioned into the plural blocks, and transmits the tag ID information received from the RFID tag and the local ID information of the section. The management server(130) displays the sections in which the RFID tag is found and identifies the visitor with the tag ID information if the local ID information and the tag ID information are received from the RFID reader. The RFID tag is attached to an ID card issued to the visitor. The management server constructs a database by periodically checking the position of the RFID tag and analyzes the moving pattern of the visitor.

Description

Entry and exit control system using RFCID {Entrance and exit control system using Radio Frequency IDentification}

1 is a view schematically showing a form in which the components of the access control system using RFID according to an embodiment of the present invention are installed in a building.

Figure 2 is a block diagram schematically showing the components of the RFID tag provided in the access control system using RFID according to an embodiment of the present invention.

3 is a block diagram schematically illustrating the components of an RFID reader provided in an access control system using RFID according to an embodiment of the present invention.

Figure 4 is a block diagram schematically showing the components of the management server provided in the access control system using RFID according to an embodiment of the present invention.

5 is a data table illustrating a database structure of a management server provided in an access control system using RFID according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

100: access control system using RFID

110: RFID tag 111: tag antenna

112: reception demodulation section 113: power supply section

114: transmission modulator 115: tag control unit

116: tag memory 120: RFID reader

121: reader antenna 122: demodulator

123: transceiver 124: modulator

125: reader control unit 126: reader memory

127: network interface 130: management server

131: network connection device 132: data analysis module

133: display module 134: path pattern generation module

135: alarm control module 136: database

The present invention relates to an access control system using RFID.

Currently, ubiquitous network technology has attracted the attention of many people, ubiquitous network technology means a technology that allows to naturally connect to various networks regardless of time and place.

The ubiquitous network technology can be implemented in various ways using communication technologies such as telematics communication, short-range wireless communication, and mobile communication, and by using this, a natural connection environment is provided in a space such as a car, home, or public place. The utilization of IT information and technology will increase, and the overall IT industry is expected to develop more rapidly.

As the next generation technology of the ubiquitous network technology, RFID technology may be cited. Among them, RFID technology introduced in commerce is representative.

In general, a commercial RFID system includes an electronic tag attached to a product and embedded with detailed information, an RFID reader for reading the information of the electronic tag using RF communication, an information server for collecting information from the RFID reader and building a database; It consists of an ONS (Object Name Server) that connects the information server to build a global network, and the electronic tag attached to the product passes through the area where the RFID reader is located and transmits information using RF communication. As a result, logistics / distribution management such as distribution, assembly, price change, and sales of goods can be efficiently processed.

On the other hand, such as research institutes, corporations, hotels, conference halls, etc., many of the building's visitors are moved, there is a high risk of being exposed to terrorism such as terrorism, management of the goods stored in the facility, and security of access is required. There is a need to check and control the location of visitors (visitors) in real time, which is accompanied by many difficulties in the conventional manner.

For example, in case of controlling entry of a building by using a log of visitors or using an access card, access is controlled only at the front door or entrance of the building where the control center is located, and it is difficult to control the movement of the inside of the building.

In particular, a solution for determining the location of a person using a video photographing device (video camera), an image processing system, a mobile communication terminal, an access card, etc. has been provided, but it is cumbersome to use and difficult to install. Due to the limitation of the installation environment, it is difficult to control the whole building, and because the installation location is exposed to the outside, the accessor may artificially leave the control area.

The present invention arranges a plurality of RFID readers for transmitting local identification information inside a building, and the management server analyzes the local identification information to display the location of the person who has the corresponding RFID tag to track the location of the building's accessor and to determine the route pattern. It provides access control system using RFID which can create and control the movement of the visitors more precisely.

The access control system using RFID according to the present invention comprises one or more RFID tags for transmitting tag identification information including ID information assigned to each building occupant; In a plurality of blocks are arranged on the floor of the building, a plurality of RFID is arranged for each block, and transmits the reader identification information including the region identification information in the building in which the block is located with the received tag identification information leader; And a management server that displays the area within the building where the RFID tag is located when the tag identification information and the reader identification information are transmitted, and identifies an accessor based on the ID information.

In addition, the management server provided in the access control system using RFID according to the present invention matches the area identification information with the building drawing, and guides the location of the person by voice or displays it on the screen.

The RFID reader of the access control system using RFID according to the present invention includes a directional antenna having a beam pattern formed on the floor of a building, and communicates with the RFID tag using a UHF band frequency of 800 MHz to 900 MHz. do.

In addition, the management server provided in the access control system using RFID according to the present invention periodically finds the location of the RFID tag to build a database, and analyzes the path pattern of the person assigned the ID information.

In addition, the management server provided in the access control system using RFID according to the present invention sets access rating information according to the tag identification information and designates access rating information for each building area, so that the RFID tag is located in the building. If the access grade information of the area and the access grade information of the RFID tag does not match, it is notified by the alarm signal.

Hereinafter, an access control system using RFID according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram schematically illustrating a form in which components of an access control system using RFID according to an embodiment of the present invention are installed in a building.

1, the access control system using RFID according to the embodiment of the present invention includes an RFID reader 120, an RFID tag 110, a management server 130, and an alarm device 300. The tag 110 is attached to an identity card provided to a building's visitor or employee (hereinafter referred to as "entrant"), and transmits tag identification information including ID information assigned to each person.

In the building to which the access control system using RFID according to the embodiment of the present invention is applied, the entire building floor such as a room or a corridor is partitioned into blocks (B), and the RFID reader 120 is assigned to each block (B). It is installed one by one.

Therefore, the RFID reader 120 loads the unique local identification information in the building in which the block is located in the reader identification information, and the management server 130 analyzes the tag identification information transmitted together with the corresponding RFID tag 110. It is possible to know in which block (RFID reader 120) the person with the possession.

The management server 130 displays the locations of the persons on the building drawing by using a graphical user interface (GUI), and may identify the persons of the persons using the ID information.

In addition, the management server 130 may set an access level for each ID information and a building area to call attention by operating the alarm device 300 when the access control person enters a specific area, and route pattern information for each person. You can determine the utilization of the building space by creating a.

The operation of the management server 130 will be described in detail below with reference to FIGS. 4 and 5.

First, the RFID tag 110 according to an embodiment of the present invention will be described with reference to FIG. 2.

2 is a block diagram schematically illustrating components of an RFID tag 110 provided in an access control system using RFID according to an embodiment of the present invention.

Referring to FIG. 2, the RFID tag 110 includes a tag antenna 111, a reception demodulation unit 112, a power supply unit 113, a transmission modulator 114, a tag control unit 115, and a tag memory 116. The tag antenna 111 receives the information request signal from the RFID reader 120 or transmits the signal identification information processed by the transmission modulator 114 through a wireless channel, and usually a dipole antenna is used. .

The power supply unit 113 is a device for supplying power to the reception demodulation unit 112, the tag control unit 115 and the transmission modulator 114.

The RFID tag 110 is classified into an active method and a passive method according to the driving method of the tag antenna 111 and the power supply 113. The active method includes a tag antenna 111 for generating an oscillation circuit. And transmit the tag identification information, and the power supply unit 113 includes a battery to provide power to the oscillation circuit. In the embodiment of the present invention, the RFID tag 110 is assumed to be driven by a manual method.

The passive method is a method in which the power supply unit 113 regenerates power by using radio wave energy of an RF signal transmitted from the reader 120, and a detection diode rectifies the DC voltage using the RF signal and rectifies the DC voltage. Is used as a power source for supplying a modulation waveform to the transmission modulator 114 by generating a response code.

When the RFID tag 110 operates in a passive manner, a UHF (800 MHz to 900 MHz, country-assigned frequency) signal is used.

The reception demodulation unit 112 demodulates the information request signal into digital data and transmits the information to the tag control unit 115. The tag control unit 115 generates tag identification information by analyzing a code of the demodulated information request signal. The tag identification information includes ID information.

Here, the ID information is unique identification information assigned to the accessor, and when the accessor enters the building, the accessor carries an identity card including his photo, name and ID information.

The tag controller 115 has a communication protocol to control wireless communication with the RFID reader 120.

The tag memory 116 stores an information code system, and the tag control unit 115 generates the tag identification information using the information code system. The information code system includes header information, ID information, error correction information, tag identification information, and the like. It is composed.

The header information includes information such as a code format, a version of a code system, and a code length. The error correction information (CRC: Cyclic Redundancy Checking) is information for correcting an error that may occur in data communication. In addition, the tag identification information is device identification (eg, MAC address) information that enables the RFID reader 120 to identify the RFID tag 110.

The transmission modulator 114 modulates the digital signal generated by the tag controller 115 into an RF signal, and the modulated signal is transmitted through the tag antenna 111.

3 is a block diagram schematically illustrating the components of the RFID reader 120 provided in the access control system using RFID according to the embodiment of the present invention.

According to FIG. 3, the RFID reader 120 includes a reader antenna 121, a demodulator 122, a transceiver 123, a modulator 124, a reader controller 125, a reader memory 126, and a network interface. 127, the reader control unit 125 is provided with a communication protocol to control the RFID communication, and periodically sends an information request signal to determine the position of the RFID tag (110).

The reader antenna 121 transmits an information request signal or receives tag information through a wireless channel. The reader antenna 121 or tag antenna 111 performs a function of a kind of a mutual sensing sensor through a wireless channel.

The reader antenna 121 is a directional antenna in which a beam pattern is formed above the floor of a building, and communicates with the RFID tag 110 using a UHF band frequency of 800 MHz to 900 MHz. Therefore, referring to FIG. 1, the block covered by the RFID reader 120 is preferably formed as a square region having a length of about 70 cm.

The reader controller 125 analyzes the code of the tag identification information digitally signaled by the demodulator 122 and generates its own reader identification information. In this case, the reader controller 125 converts the data format and extracts the necessary information. Perform teal filtering.

In addition, the reader control unit 125 generates the reader identification information by including the area identification information in the building where the block in which the RFID reader 120 is installed is included.

In the reader memory 126, a code analysis system is recorded like the tag memory 116, and the reader control unit 125 uses the code analysis system, and the local identification information and the received tag identification information are stored (tag identification information). Is temporarily saved).

The transceiver 123 processes the tag information in the form of an RF signal and converts it into a baseband signal, and converts the information request signal generated by the reader controller 125 into an intermediate frequency signal through the modulator 124. As described above, the RF signal is converted into a UHF band frequency signal of about 800 MHz to 900 MHz and transmitted to the reader antenna 121.

The demodulator 122 demodulates the signal-processed tag information into digital data and transmits the demodulated tag information to the reader controller 125.

The network interface 127 receives the digitally processed reader identification information and configures it into a data packet and transmits the data to the management server 130 connected through the wired cable (network) 200. Cables and the like can be used.

4 is a block diagram schematically showing the components of the management server 130 provided in the access control system using RFID according to an embodiment of the present invention, Figure 5 is a door access using RFID according to an embodiment of the present invention It is a data table showing the database structure of the management server 130 included in the control system.

Referring to FIG. 4, the management server 130 includes a network connection device 131, a data analysis module 132, a display module 133, a path pattern generation module 134, an alarm control module 135, and a database 136. And a user interface 137, the network connection device 131 is connected to the network interface 127 and the wired network 200 of the RFID reader 120, and has the same transmission protocol to decompose the packet. Then, the transmitted tag identification information (D0) and reader identification information (D7) are analyzed.

The data analysis module 132 receives the analyzed tag identification information (D0) and reader identification information (D7), extracts the ID information (D1), the area identification information (D8), and accesses according to the time (D4) ( The position D5 of D2) is recorded in the database 136.

As shown in FIG. 5, the database 136 includes tag identification information D0, ID information D1, a person's name D2, access level D3, and movement information according to time D4 (entry and destination). ), (D5), route pattern information (D6), reader identification information (D7), region identification information (D8), drawing information (D9), matching information (D10), access rating information (D11) set in the region, etc. It is recorded.

The display module 133 calculates the drawing information D9 to display graphic data as an image of the user interface 137 and uses the matching information D10 to display the area identification information D8 of the RFID reader 120. Matches to the corresponding point in the figure and displays.

In this case, the matching information D10 may be implemented in various forms such as coordinate information or program code information of a specific graphic data module. The display module 133 may display the ID information D1 or the name D2 on the display point. You can output it together. Thus, the administrator can see at a glance which person is in which location.

In addition, the display module 133 converts the matched local identification information D8 into text data, and combines the same into a predetermined voice sample to convert it into voice data. The voice data may be converted into an analog signal on the user interface 137 and transmitted through the speaker.

In addition, the data analysis module 132 compares the access level (D3) and the access level (D11) of the current location of the access person and transmits a control signal to the alarm control module 135 when it is determined that the access violation. do.

The alarm control module 135 applies a switching voltage to the alarm device 300 when the control signal is transmitted to operate the alarm device 300.

When the location D5 of each person's time D4 is periodically analyzed by the data analysis module 132 and built in the database 136, the path pattern generation module 134 calculates statistical values of movement paths between regions. In addition, the path pattern information D6 is generated for each person.

The user interface 137 displays the route pattern information D6 for each person or region according to a manager's command so that the manager can grasp the utilization of the building space.

Although the present invention has been described above with reference to the embodiments, these are only examples and are not intended to limit the present invention, and those skilled in the art to which the present invention pertains may have an abnormality within the scope not departing from the essential characteristics of the present invention. It will be appreciated that various modifications and applications are not illustrated. For example, each component specifically shown in the embodiment of the present invention can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

According to the access control system using RFID according to the present invention, it is possible to block the floor of the building to place the RFID reader and to distinguish the area identification information so that the entire area of the building can be precisely controlled, and the preset grade is reflected for each RFID tag. It is possible to control the entrance efficiently.

In addition, according to the present invention, it is possible to effectively install / deploy the building equipment by analyzing the path pattern of the visitor or worker, to increase the use space of the building, accidents such as assassination of key personnel or terrorism of industrial facilities There is an effect that can be blocked in advance.

Claims (8)

At least one RFID tag transmitting tag identification information including ID information assigned to each building occupant; In a plurality of blocks are arranged on the floor of the building, a plurality of RFID is arranged for each block, and transmits the reader identification information including the region identification information in the building in which the block is located with the received tag identification information leader; And When the tag identification information and the reader identification information is transmitted, the access control system using the RFID to display the area in the building in which the RFID tag is located, and to identify the person by the ID information. The method of claim 1, wherein the RFID tag Access control system using RFID, characterized in that attached to the card issued to the person. The method of claim 1, wherein the management server Matching the area identification information with the building drawings, the entrance control system using the RFID, characterized in that the voice guidance or display on the screen. The method of claim 1, wherein the RFID reader is A directional antenna having a beam pattern formed above the floor of the building, Access control system using RFID, characterized in that communicating with the RFID tag using a UHF band frequency of 800MHz ~ 900MHz. The method of claim 1, wherein the management server Periodically identify the location of the RFID tag to build a database, Access control system using RFID, characterized in that for analyzing the path pattern of the person assigned the ID information. The method of claim 1, wherein the management server Set access grade information according to the tag identification information and designate access grade information for each area in the building, and alarm if the access grade information of the area in the building where the RFID tag is located does not match the access grade information of the RFID tag. Access control system using RFID, characterized in that by signaling. The method of claim 1, wherein the RFID tag Access control system using RFID, characterized in that the passive (Passive) tag. The method of claim 1, wherein the RFID reader is Periodically transmitting an information request signal to receive tag identification information from the RFID reader, and transmitting the tag identification information and the reader identification information to the management server.

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