KR101512498B1 - Door open system and method using nfc - Google Patents

Door open system and method using nfc Download PDF

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Publication number
KR101512498B1
KR101512498B1 KR1020140043581A KR20140043581A KR101512498B1 KR 101512498 B1 KR101512498 B1 KR 101512498B1 KR 1020140043581 A KR1020140043581 A KR 1020140043581A KR 20140043581 A KR20140043581 A KR 20140043581A KR 101512498 B1 KR101512498 B1 KR 101512498B1
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South Korea
Prior art keywords
nfc
random number
unit
mobile terminal
information
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KR1020140043581A
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Korean (ko)
Inventor
박윤용
박재완
허진만
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선문대학교 산학협력단
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B51/00—Operating or controlling locks or other fastening devices by other non-mechanical means

Abstract

The present invention relates to a door opening system and a method thereof and, specifically, to a door opening system and a method thereof using a near field communication (NFC) to open a door by: authenticating that a mobile terminal of a user is registered by using an NFC technology; wirelessly transmitting a random number to the mobile terminal of the user if the mobile terminal is registered; wirelessly receiving a corresponding motion image; and determining whether a correspondence between the random number and the motion image is correct or not by extracting a number. For the aforementioned, the door opening system includes: at least one preregistered user mobile terminal; an authentication device which generates a random number and wirelessly transmits the random number to the user mobile terminal if the user mobile terminal enters a preset area and authenticates NFC information; and a manager terminal which wirelessly receives information of the authentication result of the authentication device and remotely controls the authentication device.

Description

{DOOR OPEN SYSTEM AND METHOD USING NFC}

The present invention relates to a door open system and method, and more particularly, to a door open system and method, and more particularly to a door open system and method, And more particularly to a door open system and method using an NFC to open a door by determining whether the random number and the motion image correspond to each other by correcting the random number by extracting a number.

Generally, door locks are installed on the doors to control the access of outsiders by artificially controlling the places used by the family and many people (apartments, single-family houses, office buildings, offices, etc.).

The patent literature described in the following prior art document is Korean Patent Laid-Open Publication No. 2011-0023218, and the prior art document uses a door lock which can control access using NFC technology, The method comprising the steps of: receiving usage time information of the selected space transmitted from the server and the unique number of the first NFC mobile communication device; when the second NFC mobile communication device approaches the door lock, The method comprising the steps of: reading a unique number of the first NFC mobile communication device from the first NFC mobile communication device, reading a unique number of the second NFC mobile communication device using the NFC technology; The door lock releases the lock so that the user of the second NFC mobile communication apparatus can enter and leave the selected space only within the use time It discloses a digital door lock device and a control method comprising the system.

However, in the prior art document, when a motion image corresponding to a random number wirelessly received from an authentication device is wirelessly transmitted to the authentication device, the authentication device discloses a technique of opening and closing the door by comparing and judging the random number and the motion image It is not.

Accordingly, if the user terminal authenticates the user mobile terminal by applying the NFC technique, provides a random number for opening the door of the user registered in the user terminal, and if the user terminal provides the motion image corresponding to the random number, A technology for comparing and judging motion images, and a technique for opening and closing the door by remote control of the manager even if it is an unregistered user, is urgently required.

Patent No.: Korean Patent Publication No. 2011-0023218 Name of patent: How to control access to selected space

It is an object of the present invention to provide a method and apparatus for authenticating a user mobile terminal by applying NFC technology, The present invention provides a door open system and method using NFC that extracts a number from a motion image corresponding to the random number and compares the random number with the number to easily manage a user's entry and exit.

To this end, a door open system using NFC, which is an image according to an embodiment of the present invention, includes at least one previously registered user mobile terminal; An authentication device for generating a random number to the user mobile terminal and wirelessly transmitting the random number when the user mobile terminal enters a preset area and authenticates NFC (Near Field Communication) information; And an administrator terminal for receiving the authentication result information of the authentication device and controlling the authentication device remotely, the mobile terminal corresponding to the random number wirelessly received from the authentication device by authentication of the NFC information And the authentication device opens a door if the correspondence between the random number and the motion image is correct, and the random number is 1 to 5 And the motion image is an image of an operation of displaying a number corresponding to the random number with a finger.

The mobile terminal according to the embodiment of the present invention includes: a first NFC unit for wirelessly transmitting the NFC information; A first communication unit for wirelessly receiving the random number and wirelessly transmitting the motion image corresponding to the random number if the unique number information wirelessly transmitted from the first NFC unit coincides with information previously stored in the authentication device; A first display unit for displaying the random number on a screen and displaying the sensed motion image on a screen; And an image pickup unit for picking up the motion and outputting a motion image on the screen, wherein the NFC information is pre-registered unique number information.

The authentication apparatus according to an embodiment of the present invention receives the NFC information from the user mobile terminal when the user mobile terminal enters a predetermined area and if the NFC information matches the previously stored NFC information, A second NFC unit determining that the mobile terminal is a pre-registered user terminal; A random number generator for generating a random number by the determination of the second NFC unit; A numeral extracting unit for analyzing a motion image corresponding to the random number and extracting a numeral; A determination unit for determining whether the random number matches the number; A door opening unit for opening the door according to the determination result of the determination unit; And a second communication unit wirelessly transmitting the random number to the user mobile terminal, wirelessly receiving the motion image, wirelessly transmitting the authentication result information to the administrator terminal, and receiving the open control signal of the door open unit wirelessly .

According to an embodiment of the present invention, the administrator terminal includes a control signal generator for generating a control signal for controlling door opening of the authentication device; A third communication unit wirelessly transmitting the control signal to the authentication device and wirelessly receiving the authentication result information of the authentication device; And a third display unit for displaying information including the control signal and the authentication result information, wherein the administrator terminal is a portable mobile terminal.

According to an embodiment of the present invention, the number extracting unit detects an image of a hand and a wrist using skin color, removes internal noise while softening the image through morphology erosion, calculation, and Gaussian correction, A center point is set on the image, an ellipse and an image of the hand are calculated to extract an overlap region, an outline of the overlapping portion is detected, and the number of the outlines is extracted to extract the number of the fingers .

(A) The second NFC unit receives the NFC information from the first NFC unit of the user mobile terminal, and when the NFC information matches the previously stored NFC information, the door open method using the NFC according to the present invention Determining that the terminal is a pre-registered user terminal; (B) generating a random number by a random number generator if the mobile terminal is the pre-registered user in step (A); (C) receiving a motion image corresponding to the random number generated in the step (B) from the user mobile terminal, extracting a number by analyzing the motion image; (D) determining whether the number extracted in step (C) matches the random number generated in step (B); (E) opening the door when the determination unit determines that the number matches the random number in the step (D), wherein the random number is any one of 1 to 5, and The motion image is an image of the operation of displaying the number corresponding to the random number with the finger.

Also, the step (C) according to the embodiment of the present invention may include a step of detecting a hand and a wrist using skin color; Removing internal noise while softening the image through morphology erosion, calculation, and Gaussian correction; Holding a center point of the hand and calculating an overlapping part by calculating an ellipse and a hand image; And extracting the number of the fingers by detecting an outline of the overlapping portion and deriving the number of the outlines.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

According to various embodiments of the present invention, there is an effect that accessibility to a registered user is provided by applying NFC technology.

Also, according to various embodiments of the present invention, it is possible to prevent leakage of airtightness and damage to facilities by controlling intrusion of outsiders within the facility.

According to various embodiments of the present invention, there is also an effect of improving the efficiency of access control by receiving and authenticating a motion image corresponding to a random number.

1 is a block diagram schematically illustrating a door open system using an NFC according to an embodiment of the present invention;
2 is a block diagram illustrating a user mobile terminal according to an embodiment of the present invention in detail.
FIG. 3 is a diagram illustrating an example in which a first display unit according to an embodiment of the present invention displays a random number received wirelessly; FIG.
4 is a screen view showing an example in which a first display unit according to an embodiment of the present invention displays a motion image of a hand;
5 is a block diagram showing in detail an authentication device according to an embodiment of the present invention;
6 is a block diagram illustrating an administrator terminal in accordance with an embodiment of the present invention.
7 is a flowchart showing a door opening method using an NFC according to an embodiment of the present invention;
FIG. 8 is a flowchart showing a number extraction procedure of step S230 according to an embodiment of the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms " first ", " second ", and the like are used to distinguish one element from another element, and the element is not limited thereto.

In addition, the singular forms used below include plural forms unless the phrases expressly have the opposite meaning. Throughout the specification, when an element is referred to as "including" an element, it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

1 to 8 are denoted by the same reference numerals.

The basic principle of the present invention is that an authentication apparatus wirelessly transmits a random number to a mobile terminal of a registered user and wirelessly receives a motion image corresponding to the random number, and controls the door opening by analyzing the random number and the motion image.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

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

1 is a block diagram schematically illustrating a door opening method using an NFC according to an embodiment of the present invention.

Referring to FIG. 1, a door open system 100 using an NFC according to the present invention includes a user mobile terminal 110, an authentication apparatus 120, and an administrator terminal 130.

First, Near Field Communication (NFC) is a non-contact communication technology that uses a certain frequency band as one of radio frequency identification (RFID) technologies. Since NFC can use both data reading and writing functions, it does not need the dongle (reader) that was needed to use the existing wireless tag, and it is similar to the existing short distance communication technology such as Bluetooth. However, It is a technology that has the advantage of being.

A door open system 100 for authenticating a motion corresponding to a random number according to an embodiment of the present invention as shown in FIG. 1 and opening a door will be described in detail.

First, the user mobile terminal 110 is started.

Here, the user terminal 110 may be a registered mobile terminal 110 owned by a visitor or a family member. That is, the user mobile terminal 110 is preferably a mobile terminal registered by an administrator, and the user mobile terminal 110 records and stores NFC information.

Here, the NFC information is an identification number previously registered, and is an identification number of a number, a number, a text, or a combination of special characters given to a registered user.

The user mobile terminal 110 receives the NFC information from the authentication device 120. When the user mobile terminal 110 is authenticated, the user mobile terminal 110 wirelessly receives a random number wirelessly transmitted from the authentication device 120, captures an image of the motion corresponding to the random number, .

The authentication device 120 receives the image of the motion and compares the random number with the number extracted from the image of the motion. If the random number matches the number, the authentication device 120 opens the door.

The user mobile terminal 110 shown in FIG. 1 will be described in detail with reference to FIG.

FIG. 2 is a detailed block diagram of a user mobile terminal according to an embodiment of the present invention. Referring to FIG.

2, the user mobile terminal 110 includes a first NFC unit 111, a first communication unit 112, a first display unit 113, and an imaging unit 114 do.

A user mobile terminal 110 according to an embodiment of the present invention configured as shown in FIG. 2 will be described in detail as follows.

The user mobile terminal 110 is preferably a terminal designed to enable wireless communication while moving, and is preferably provided with a module capable of bidirectional communication.

The type of the user mobile terminal 110 is not particularly limited as long as it is a mobile phone, a smart phone, a tablet, a notebook or the like, which is easy to carry and has bidirectional communication means.

First, the first NFC unit 111 starts.

The first NFC unit 111 is a short-range high frequency wireless communication unit capable of transmitting and receiving data between a plurality of devices at a distance of about 10 centimeters (about 4 inches) It is a module to which communication technology is applied.

The first NFC unit 11 not only exchanges data with a reader (not shown), but also transmits data (e.g., voice data, text data, or image data) to and from another NFC mobile communication apparatus using a wireless communication network Can receive.

Here, the other NFC mobile communication apparatuses are assumed to be the second NFC unit 121 of the authentication apparatus 120 in the embodiment of the present invention, but this is only one embodiment and can be applied to any apparatus to which the NFC communication technology is applied.

Meanwhile, the first NFC unit 111 stores NFC information as user-specific information.

The NFC information is then read by the second NFC unit 122 and authenticated whether or not the user mobile terminal 110 is registered.

Then, the first mobile communication terminal 112 is started as a two-way communication means. The first communication unit 112 includes a module or a device capable of wireless transmission and wireless reception.

The first communication unit 112 preferably has a communication protocol such as 1G (Generation), 2G, 3G, 4G, Bluetooth, and wireless LAN. But is not limited thereto.

When the user mobile terminal 110 is authenticated in the authentication device 120, the first communication unit 112 receives random number information from the authentication device 120 wirelessly.

Here, it is preferable that the random number is a number from 1 to n, but in the present invention, the number is limited to 1 to 5 that can be displayed with a finger in one hand of a person for easy understanding.

When the authentication apparatus 120 wirelessly transmits one of the random numbers to the first communication unit 112, the mobile terminal 110 displays the random number through the first display unit 113 as shown in FIG.

FIG. 3 is a diagram illustrating an example in which the first display unit 113 according to the embodiment of the present invention displays a random number received wirelessly.

Referring to FIG. 3, the user (registered user) recognizes the random number (2) and releases the number of fingers corresponding to the random number as shown in FIG.

Referring to Fig. 4, the image pickup section 114 picks up a motion image of a hand by inputting an image pickup command of the user. The motion image of the hand picked up by the image pickup section 114 is wirelessly transmitted to the authentication apparatus 120 by the first communication section 112 as described above.

Meanwhile, it is preferable that the imaging unit 114 is an apparatus for capturing an image of an object, such as a camera, and it is preferable that the imaging unit 114 is miniaturized so as to be embedded in the user mobile terminal 110.

Next, the authentication apparatus 120 will be described in detail.

5 is a detailed block diagram illustrating an authentication apparatus according to an embodiment of the present invention.

5, an authentication apparatus 120 according to an embodiment of the present invention includes a second NFC unit 121, a second communication unit 122, a random number generation unit 123, a number extraction unit 124, a determination unit 125, and a door opening portion 126.

The authentication apparatus 120 according to the embodiment of the present invention configured as shown in FIG. 5 will now be described in detail.

First, the second NFC unit 121 starts.

The second NFC unit 121 wirelessly recognizes and reads the NFC information recorded in the first NFC unit 111 within a predetermined distance (about 10 cm) from the first NFC unit 111.

Herein, the first NFC unit 111 and the second NFC unit 121 can perform the functions of the tag and the reader. In the present invention, the first NFC unit 111 and the second NFC unit 121 ) Is assumed to have a reader function. However, this is merely an example, and the first NFC unit 111 and the second NFC unit 121 can have both the tag and the reading function or can authenticate the NFC information.

Meanwhile, the second NFC unit 121 reads the NFC information from the first NFC unit 111 and compares the read NFC information with user registration information stored in the database DB.

Here, if there is information that matches the NFC information among the previously stored user registration information, the second NFC unit 121 determines that the UE 110 is a registered device.

The second communication unit 122 wirelessly transmits the random number information to the user mobile terminal 110 by the registration authentication of the second NFC unit 121. [

Similarly to the first communication unit 112, the second communication unit 122 may be a module capable of a communication protocol such as 1G (Generation), 2G, 3G, 4G, Bluetooth, The second communication unit 122 is assumed to be capable of Bluetooth communication, but the present invention is not limited thereto.

The second communication unit 122 wirelessly transmits a random number generated randomly by the random number generation unit 123 to the mobile terminal 110.

That is, by the registration authentication of the second NFC unit 121, the random number generating unit 123 generates a random number.

Here, the random number is 1 to 5 which can be displayed by one hand. However, the random number is not necessarily limited to this, and the range of numbers may be changed as necessary.

On the other hand, the second communication unit 122 receives the motion image of the hand corresponding to the random number from the first communication unit 112.

The number extracting unit 124 extracts numbers by analyzing the motion image.

Wherein the motion image is an image of an operation of displaying a number corresponding to the random number with a finger. Accordingly, by analyzing the number of opened fingers, the number displayed by the motion image can be extracted.

Here, the number extracting unit 124 detects an image of a hand and a wrist using skin color, removes the internal noise while smoothing the image through morphology erosion, calculation, and Gaussian correction.

Then, a center point is set on the image of the hand, an ellipse and an image of the hand are calculated to extract an overlap region, and then the outline of the overlap region is detected.

As described above, the number extracting unit 124 derives the number of the outlines by performing the extraction as described above, and extracts the number of the fingers as the number of the outlines.

The function of extracting the number of fingers of the number extracting unit 124 described above is only one example, and various methods can be applied to the method of extracting the number of fingers from the image of the hand.

When a number (number of fingers) is extracted from the motion image by the number extracting unit 124, the determining unit 125 compares the number with the random number.

The determination unit 125 can receive the random number transmitted from the random number generation unit 123 and can determine the identity by comparing the random number stored in the database DB with the number.

If the determination unit 125 determines that the random number and the number are the same, the door open unit 126 opens the door.

The information that the door is opened in this manner is wirelessly transmitted to the administrator terminal 130 by the second communication unit 122.

6 is a block diagram illustrating an administrator terminal according to an embodiment of the present invention.

Referring to FIG. 6, the administrator terminal 130 according to the embodiment of the present invention includes a third communication unit 131, a control signal generation unit 132, and a third display unit 133.

The administrator terminal 130 according to the embodiment of the present invention configured as shown in FIG. 6 will now be described in detail.

First, the control signal generator 132 is started.

The control signal generating unit 132 generates a command for controlling the opening of the door open unit 126 of the authentication device 120. [

That is, the administrator terminal 130 generates a command (open control command) for opening the door through the control signal generation unit 132 and transmits the open control command to the second communication unit 122 via the third communication unit 131 Wireless transmission. Then, the door open portion 126 opens the door by the open control command.

That is, the door opening unit 126 can immediately open the door by the control command received from the administrator terminal 130.

For example, when a user unregistered in the database (DB) requests the manager to open the door to the manager terminal 130 by using a telephone or a video telephone, the manager registers the unregistered user (for example, a relative , An acquaintance, etc.), and can immediately control the door opening unit 126 to open the door immediately.

The third communication unit 131 and the third display unit 133 may perform the same functions as the first communication unit 112 and the first display unit 133 of the user mobile terminal 120.

Also, the manager terminal 130 may be any one of a fixed terminal such as a cellular phone or a mobile terminal such as a smart phone.

7 is a flowchart showing a door opening method using an NFC according to an embodiment of the present invention.

Referring to FIG. 7, a door opening method (S200) using an NFC according to an embodiment of the present invention detects NFC information to determine whether the user is a registered user (S210), generating a random number (S220) S230), a random number determination step S240, a door open step S250, and an open information transmission step S260.

The door opening method (S200) using the NFC according to the embodiment of the present invention constructed as shown in FIG. 7 will be described in detail as follows.

First, the second NFC unit 121 determines whether the user is the registered user by sensing the NFC information already stored in the first NFC unit 111 (S210).

That is, the user mobile terminal 110 authenticates the NFC information from the authentication device 120. More specifically, the NFC information stored in the first NFC unit 111 is read by the second NFC unit 121. [

Here, the NFC information is an identification number previously registered, and is an identification number of a number, a number, a text, or a combination of special characters given to a registered user. The NFC information includes authentication information such as whether the user is a family member of a manager, a relative, or a user who is authorized to access.

The second NFC unit 121 determines whether the user mobile terminal 110 is a registered mobile user terminal based on the NFC information. To this end, the second NFC unit 121 compares the registered user information previously stored in the database DB with the user information included in the response signal, and judges that the registered user comes before the door if the two pieces of information match.

If it is determined that the UE 110 authenticated by the second NFC unit 121 is a mobile user of the registered user, a random number is generated for user authentication and wirelessly transmitted (S220).

That is, the random number generating unit 123 randomly generates any one of numbers 1 to 5. And wirelessly transmits the random number to the mobile terminal 110 through the second communication unit 122. Then, the mobile terminal 110 wirelessly transmits the motion image corresponding to the random number to the second communication unit 122.

When the second communication unit 122 transmits the motion image to the number extracting unit 124, the number extracting unit 124 analyzes the motion image to extract a number (S230).

The number extraction procedure in step S230 will be described in the following FIG.

The number extracted by the number extracting unit 124 is transmitted to the determining unit 125. The second determining unit compares the random number transmitted from the random number generating unit 123 or the database DB and the extracted number (S240).

If the random number and the extracted number are the same, it is assumed that the user who has registered the user mobile terminal 110 comes to the door, and the door opening unit 126 controls to open the door. (S250).

Finally, the door open information provided from the door opening unit 126 is wirelessly transmitted to the administrator terminal 130 (S260).

Therefore, the administrator terminal 130 can confirm who is currently entering the inside.

The door open information is displayed on the third display unit 133 for this purpose.

FIG. 8 is a flowchart illustrating a number extraction procedure of step S230 according to an embodiment of the present invention.

Referring to FIG. 8, step S230 according to an embodiment of the present invention includes a hand and wrist detection process S231, an internal noise removal process S232, an operation process S233, and a finger number extraction process S234. .

Step S240 according to the embodiment of the present invention configured as shown in FIG. 8 will be described in detail as follows.

First, the number extracting unit 124 detects an image of a hand and a wrist using a skin color (S231). Then, the number extracting unit 124 softens the image through morphology erosion, calculation, and Gaussian correction, and removes the internal noise (S232).

The number extracting unit 124 sets a center point on the image of the hand from which the internal noise is removed, calculates an ellipse and an image of the hand to extract an overlapped region (S233).

The area extracted as described above is extracted by the number extracting unit 124 to extract the number of the outlines, and the number of the extracted outlines is extracted (S234).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

100: door open system 110: user mobile terminal
120 authentication device 130 administrator terminal
111: first NFC unit 112: first communication unit
113: first display unit 121: second NFC unit
122: second communication unit 123: random number generator
124: Numeral extracting unit 125:
126: door opening part 127: door opening part
131: third communication unit 132: control command generation unit
133: Third display section

Claims (7)

At least one user mobile terminal previously registered;
An authentication device for generating a random number, which is any one of 1 to 5, to the user mobile terminal and wirelessly transmitting the random number when the user mobile terminal enters a preset area and authenticates NFC (Near Field Communication) information; And
And an administrator terminal for wirelessly receiving authentication result information of the authentication apparatus and remotely controlling the authentication apparatus,
The user mobile terminal,
Wirelessly transmitting to the authentication apparatus an image of an operation of displaying, with a finger, a number corresponding to the random number with a motion image corresponding to the random number wirelessly received from the authentication apparatus by authentication of the NFC information,
The authentication device includes:
A second NFC unit that wirelessly receives the NFC information from the user mobile terminal and determines that the user mobile terminal is a pre-registered user terminal if the NFC information matches pre-stored NFC information;
A random number generator for generating the random number by the determination of the second NFC unit;
A numeral extracting unit for analyzing a motion image corresponding to the random number and extracting a numeral;
A determination unit for determining whether the random number matches the number;
A door open part for opening the door when the random number matches the number; And
And a second communication unit wirelessly transmitting the random number to the user mobile terminal, wirelessly receiving the motion image, wirelessly transmitting the authentication result information to the administrator terminal, and wirelessly receiving an open control signal of the door open unit In addition,
The administrative terminal,
A control signal generator for generating a control signal for controlling door opening of the authentication device;
A third communication unit wirelessly transmitting the control signal to the authentication device and wirelessly receiving the authentication result information of the authentication device; And
And a third display unit for displaying information including the control signal and the authentication result information,
The administrative terminal,
When a user of an unregistered user mobile terminal requests to open a door and an administrator who is a user of the administrator terminal needs to immediately open the door,
Wherein the door open portion of the authentication device opens the door by the open control signal by generating an open control signal of the door through the control signal generation portion and wirelessly transmitting the door open control signal to the authentication device via the third communication portion Door open system using NFC.
The method according to claim 1,
The mobile terminal,
A first NFC unit for wirelessly transmitting the NFC information;
A first communication unit for wirelessly receiving the random number and wirelessly transmitting the motion image corresponding to the random number if the unique number information wirelessly transmitted from the first NFC unit coincides with information previously stored in the authentication device;
A first display unit for displaying the random number on a screen and displaying the sensed motion image on a screen; And
And an image pickup unit for picking up the motion and outputting a motion image on a screen,
Wherein the NFC information is pre-registered unique number information.
delete delete The method according to claim 1,
The number extracting unit may extract,
A skin color is used to detect the image of the hand and wrist, and the internal noise is removed while softening the image through morphology erosion, calculation and Gaussian correction, setting a center point on the image of the hand, And the number of the fingers is extracted by extracting the overlapped area and then detecting the outline of the overlapping part and deriving the number of the outlines.
delete delete
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