WO2019164213A1

WO2019164213A1 - Accurate and quick facial recognition door lock device

Info

Publication number: WO2019164213A1
Application number: PCT/KR2019/001962
Authority: WO
Inventors: 박경현
Original assignee: 주식회사 온페이스
Priority date: 2018-02-23
Filing date: 2019-02-19
Publication date: 2019-08-29

Abstract

The present invention relates to a door lock device capable of accurately and quickly carrying out facial recognition. The door lock device, according to the present invention, is a door lock device comprising: a first door lock housing (100) which, having a door to which the door lock device is installed as a boundary, is installed on the outside surface of the door; and a second door lock housing (200) electrically connected with the first door lock housing and installed on the inside surface of the door at a position facing the first door lock housing. In addition: in order for an angle formed by a contacting surface (101) making contact with the outside surface of the door (50) and a platform surface (102) on which at least one camera is installed, of the first door lock housing (100), to become 3° to 78°, the platform surface (102) protrudes towards the front by slanting from the upper end thereof where same meets the contacting surface (101); a pull-type handle (199) is installed on the first door lock housing (100), and a push-type handle (299) is installed on the second door lock housing (200); and a facial recognition module is installed inside the first door lock housing (100), and a battery is installed inside the second door lock housing (200).

Description

Accurate and fast face recognition door lock device

The present invention relates to a door lock device, and more particularly to a face recognition based digital door lock device.

Today, digital door locks are commonly installed in homes and offices. In general, a method of releasing the door lock using an IC card is used in a method of releasing the door lock by entering a password.

The password-based digital door lock allows the user to forget the number and takes time to enter the password. Moreover, there was a risk that passwords could be stolen by unauthorized people. IC cards have the advantages of being simpler and time-saving than password entry methods, but have the potential to be lost.

A solution to the above problem is to use biometric technology. Today, various attempts have been made to apply biometric technology in the field of access control. If the biometrics technology can be implemented well, the problem of the conventional digital door lock will be properly solved.

However, biometric access control technology is generally applied in an office environment, and specifically for automatic doors that open and close by sliding. Devices that incorporate a biometric module directly into a pull / push door lock housing installed in a common house door have rarely been industrialized. It was because of problems such as safety, reliability, and speed.

For example, if the face recognition module is installed in the door lock device, if the face recognition module takes time to recognize the user's face, it will immediately cause inconvenience to the user. Face recognition may not work properly in night environments, ie in dark places, and face recognition modules may not be installed in the door lock device. Therefore, it was difficult to industrialize the door lock device based on facial recognition.

The inventors of the present invention have completed the present invention after research and efforts for a very long time in order to solve such a problem and the development of technology.

The acquisition and processing of biometric data used in facial recognition technology has developed at a considerable level. No matter how the processing performance of the image data is improved, if the obtained data is not good, the desired facial recognition implementation will not be achieved. In particular, the door lock device must have two functions, the opening and closing function of the door and the handle function. Therefore, there was a problem that the installation position of the door lock device is limited.

An object of the present invention is to provide a door lock device capable of accurate and rapid face recognition despite the problem of the installation position of the door lock device.

The inventors have distinguished two classes in technically completing a facial recognition door lock device for achieving the above object. The first class defines how to obtain data quickly and accurately, and defines the relationship between the person in front of the door and the door lock device. The second class is concerned with the processing of the data obtained. This is done by the electronic configuration inside the door lock device.

The object of the invention is achieved by the technical construction in the above mentioned first class and / or second class. If the second class is an electronic methodology, the first class is a physical methodology.

If the person who wants to enter or exit is a child or a person who is small in height, the camera installed in the door lock device is relatively advantageous to recognize the user's face. On the other hand, if the person who wants to go in or out is a tall person, the user's face is above the door lock device, which is disadvantageous for face recognition and does not provide a good solution in terms of the first class. That is why biometric door lock devices such as fingerprints and finger veins have been proposed. However, the present invention can obtain good face recognition data even though the face of the user is located above the door lock device through the physical structure that has not existed before.

On the other hand, other unspecified objects of the present invention will be further considered within the range that can be easily inferred from the following detailed description and effects.

The present invention comprises a first door lock housing installed on the outer surface of the door bordering the door to be installed, and a second door lock housing installed on the inner surface of the door in a position electrically connected to the first door lock housing and facing each other. In the door lock device, the inclined from the top of the platform surface meets the contact surface such that the angle between the contact surface in contact with the outer surface of the door of the first door lock housing and the platform surface on which the at least one camera is installed is 3 ° ~ 78 ° To protrude forward,

A door lock device having a pull-type handle in the first door lock housing, a push-type handle in the second door lock housing, a face recognition module in the first door lock housing, and a battery in the second door lock housing. It features.

In the door lock device according to an embodiment of the present invention, the object image obtained through the camera is displayed on the central portion of the platform surface of the door lock device, and a touch screen for displaying a software key to enter a password is installed It is good to be.

In addition, in the door lock device according to an embodiment of the present invention, two cameras are installed on the surface of the platform of the door lock device, the first camera obtains an object image using visible light, the second camera is infrared It is good to obtain an object image by using the same.

In the conventional face recognition access control technology, which is fixed to a wall or embedded in a wall, a separate reclamation work and a temporary construction for power supply have to be performed. It is a facial recognition device installed in <Wall>, not a facial recognition device installed in <Door Gate> opened and closed by push / pull method. Part of the present specification should be emphasized that the <door lock device> installed in the <access door>. The present invention implements a door lock device with a face recognition device very effectively. In the past, only the abstract concept was due to low recognition rate and high user dissatisfaction, but the facial recognition door lock device installed in the entrance door was completed by the unique configuration of the present invention in which the angle of view of the camera was physically adjusted.

On the other hand, even if the effects are not explicitly mentioned herein, the effects described in the following specification expected by the technical features of the present invention and its provisional effects are treated as described in the specification of the present invention.

1 is a view schematically showing a problem and concept of the present invention.

2 is a perspective view of the first door lock housing 100 according to an embodiment of the present invention.

FIG. 3 is a side view of the first door lock housing 100 of FIG. 2.

4 is a view of a second door lock housing 200 according to an embodiment of the present invention.

Figure 5 shows the internal electronic configuration of the door lock device 10 according to an embodiment of the present invention.

FIG. 6 is a view illustrating the first door lock device 100 and the second door lock device 200 installed in close contact with the outer and inner surfaces of the door based on the door 50.

The accompanying drawings show that they are illustrated as a reference for understanding the technical idea of the present invention, by which the scope of the present invention is not limited.

Hereinafter, with reference to the drawings looks at the configuration of the present invention guided by various embodiments of the present invention and the effects resulting from the configuration. In the following description of the present invention, when it is determined that the subject matter of the present invention may be unnecessarily obscured by the person skilled in the art with respect to the related well-known functions, the detailed description thereof will be omitted.

Figure 1 shows the basic concept of the door lock device of the present invention from the perspective of the first class. Assume that the door lock device 1 with a handle is installed in the door. The user will authenticate himself through the camera 3 installed in the door lock device 1, and then hold the handle of the door lock device 1 to open the door. 1 (a) shows that when the front surface 2 of the door lock device 1 is approximately vertical, FIG. 1 (b) shows that the front surface 2 of the door lock device 1 is at a predetermined angle θ from the vertical plane. The case consists of inclined surfaces. A, B, and C are objects that provide the face data of the user to be obtained by the camera 3. In general, the height of the users is larger than the height of the door lock device 1, and also differs from one to another.

In Fig. 1A, the object A is effectively located in the angle of view α of the camera 3, but the object B is insecure, and the object C is located outside the angle of view α. The more the object is located outside the angle of view α, the greater the likelihood of image distortion. Thus, data acquisition for face recognition authentication may be poor.

On the other hand, in FIG. 1 (b), since the surface 2 is inclined by the angle θ, the angle of view α is adjusted by this, and the objects A, B, and C are all positioned inside the angle of view. By physically adjusting only the θ values, data can be obtained more advantageously for facial authentication without any other electronic configuration or design changes. The door lock device of the present invention is applied to the concept of FIG. 1 and will now be described.

The door lock device according to the present invention comprises a first door lock housing and a second door lock housing which are installed to face each other at the boundary of the door. The first door lock housing is a door lock external device (installed outside the entrance door), and the second door lock housing is a door lock internal device (installed inside the entrance door). 2 and 3 show a schematic configuration example of the first door lock housing 100 among them. The user who wants to open the door will be positioned in front of the first door lock housing 100, and after the predetermined face recognition process, grabs the handle 199 to open the door.

The back surface 101 of the first door lock housing 100 is a surface in close contact with the outer surface of the door. This back surface 101 is usually made of a substantially rectangular surface. However, since the function of the back 101 is installed by fixing the first door lock housing 100 to the outer surface of the door, it may have various geometric shapes.

First Door Lock Housing 100 The major electronic / physical configuration is installed on the platform in front of the housing. The surface 102 of the platform, as shown, is inclined while protruding smoothly forward as it progresses down from the top that meets the back 101. As seen in FIG. 3, when viewed from the side, the platform surface 102 and the back 101 make a predetermined angle θ.

The central portion of the door lock platform is configured with a display 103 having a touch screen function. In addition, a power button 104, an RF card reader 105, a first camera 107, a second camera 108, an LED lamp 109 is installed, a portion of which is shown as the platform surface 102 Exposed through Inside the door lock platform, electronic components corresponding to the above configurations are installed into the internal PCB, and electrical circuits are constructed as previously designed. The internal electronic configuration will be described again with reference to FIG. 6.

Although not shown in the drawings, a speaker, an emergency power supply unit, a mechanical operation unit, and the like may be further installed. The speaker is used to alert the user when the battery is about to be replaced or to guide the user through the facial recognition process. The battery of the door lock device supplied through the second door lock housing may be discharged, and in such an emergency situation, the emergency power supply is installed as a connector for urgently supplying power to the electronic configuration of the first door lock device. Normally, users connect 9V DC power supply to the emergency power supply from outside. In addition, the mechanical actuating unit is preferably installed at a portion covered by the handle 199, and the door may be opened by inserting a mechanical emergency key into the mechanical actuating unit in case of malfunction of the door lock device or battery discharge.

If the back surface 101, which is a contact surface that contacts the outer surface of the entrance door of the first door lock housing 100 and the platform surface 102, the angle (θ) is preferably set at 3 ° ~ 78 °. If the angle θ was less than 3 °, there was no significant technical effect of improving data availability. If the angle θ was greater than 78 °, there was a technical disadvantage that the user had to bow down to obtain facial recognition data.

More preferably, the angle θ of the present invention may be determined at 10 ° to 45 °. When the actual product is manufactured for trial or commercial use, it is necessary to consider product design and user convenience as well as obtain data that is advantageous for the face recognition of the door lock housing. When the first door lock housing 100 was viewed from the front, when the width was 84.9 mm and the length was 354.9 mm, the optimum angle θ was 24.4 °. While improving the accuracy and speed of facial recognition, the design element is also considered to be the most excellent and user-friendly number. In that case, the height of the platform top was designed to be 57.7mm. However, when considering only the facial recognition data acquisition without considering the excellent design and user convenience, as a result of measuring the performance change of the facial recognition according to the physical change of the camera angle of view, the angle θ is more preferably, Angle (theta) was more favorable in about 10 degrees-45 degrees.

At the bottom of the platform, a pull type handle 199 that can be pulled by a user is installed. The handle 199 may have various shapes, positions, standards, and materials.

4 shows a configuration example of a second door lock housing 200 according to an exemplary embodiment of the present invention.

The battery box 210 includes a plurality of batteries. Preferably, eight 1.5V AA batteries are connected in series. Of course, the battery configuration can be variously modified. In addition, the pair of door lock housings are electrically connected to each other by a connecting means such as a wired cable, thereby providing electric power configured in the second door lock housing 200 to the internal electronic configuration of the first door lock housing 100.

The other configuration of the second door lock housing 200 is not particularly related to the electronic configuration and consists of mechanical elements. The rear surface 201 of the second door lock housing 200 comes into close contact with the inner surface of the door.

The handle 299 is a push type handle, and the user opens the door while pushing the handle 299.

The mechanical open / close switch 220 is configured to correspond to the mechanical emergency key in the first door lock haze 100. The user inside the door may want to prevent someone from opening the door lock device from outside. In that case, the external opening locking device 230 is used.

See FIG. 5. As illustrated in FIG. 5, the first door lock housing 100 and the second door lock housing 200 are fixedly installed at a similar position inside and outside each other based on the door 50. The person outside the door pulls the pull type handle 199 through door authentication. The person inside the door opens the door by pushing the push type knob 299 regardless of recognition.

Access door authentication of the present invention is performed by biometrics using a camera module and facial recognition software. However, not only this, but also described in the embodiment of FIG. 6, user authentication for inputting a password and user authentication using an RF card may be further included. In addition, as described above, the door can be opened and closed mechanically.

6 illustrates an example internal electronic configuration of the door lock device 10 according to an exemplary embodiment of the present invention. The image acquisition module 13a and the face recognition module 13b executed by the operation of the control unit 11 are software devices, and the remaining components include hardware equipment.

The door lock device 10 includes a control unit 11, a power supply unit 12, an image acquisition module 1a, a face recognition module 13b, a touch screen 13, a switch 14, a card reader 15, and a speaker 10s. ), A first camera module 17, a second camera module 18, and an IR_LED 19.

The control unit 11 is a hardware / software device composed of a processor, firmware and the like, and controls them while communicating with an internal electronic configuration. In particular, in the present invention, when the face recognition process is started, the control unit 11 executes face recognition software for processing image acquisition and face recognition.

The facial recognition software is a module for detecting a face area in an image obtained through the first camera module 17 and / or the second camera module 18, a module for detecting a face feature point in the detected face area, and a face feature point vector value. Module for processing a mathematical matrix operation using the module, a module for estimating gender / age / eye closure, etc., a module for generating a result value compared with an image registered in the memory 16, and the like.

The first camera module 17 is a camera module that acquires an image using visible light and acquires a face image of a user in a bright environment. The first camera module 17 corresponds to the first camera 107 of FIG. 2.

In a preferred embodiment of the present invention, the second camera module 18 may be a camera module that acquires an image using visible light like the first camera module 17. In that case, the door lock device uses two (or more) cameras to acquire an image. In another preferred embodiment of the present invention, the second camera module 18 may be an infrared camera module, and acquires a face image of a user in a dark environment. The second camera module 18 corresponds to the second camera 108 of FIG. 2.

The touch screen 13 may be preferably configured as a touch type color LCD. The touch screen 13 functions as a user interface for visually guiding a face recognition method of the door lock device, and transmits a user's control command to the control unit 11.

Two authentications are performed through this touch screen 13 screen. First is facial recognition. When the user selects facial recognition authentication or is automatically set through the touch screen 13 screen, the first camera module 17 and / or the second camera module 18 may be moved through the touch screen 13 screen. The user's face image obtained through the display is displayed. The user naturally looks at his or her face reflected on the touch screen 13 to minimize movement. Second is password authentication. The software key is displayed on the screen of the touch screen 13, and the user may transmit the password to the controller 11 by touching the displayed key.

The IR_LED 19 lamp irradiates light toward an object located outside the door.

Interaction between the control unit 11, the first camera module 17 and the second camera module 18, the touch screen 13, the image acquisition module 13a including the face recognition software, and the face recognition module 13b Functions and configurations performed by the present invention correspond to the face recognition module of the present invention.

As another electronic authentication method, the card reader 15 may be used. The user can bring the card in hand close to the card reader 15, and the card reader 15 reads the corresponding card by short-range communication and sends it to the controller 11. Preferably RFID communication is used.

Audio output is done through the speaker 10s. Sounds such as guide sounds and alarm sounds are output through the speaker 10a.

The face recognition performance of the door lock device of the present invention completed in the configuration described in detail above was measured. The recognition speed was 0.2 ~ 2 seconds, night recognition was possible, and the recognition rate reached 98%.

[Other Modifications]

(1) In the present invention, the angle θ formed between the back surface 101 and the platform surface 102, which is a contact surface contacting the outer surface of the entrance door of the first door lock housing 100, is in the range of approximately 3 ° to 78 °. It was related with the Example of the door lock apparatus determined by the fixed angle in the inside. However, the technical idea of the present invention is not limited to the invention in which the angle cannot be changed because the angle θ is determined once the door lock device is manufactured.

(2) For example, in another embodiment of the present invention, it may be a door lock device that can adjust the angle of the platform surface. A mechanical mechanism capable of displacing the surface of the platform at two or more angles [theta] can be installed in the first door lock housing, which is a user selectable embodiment.

(3) In another embodiment of the present invention, by installing a mechanical mechanism that can adjust the physical displacement of the camera module, it is possible to adjust the angle of view of the camera toward the object in the camera module itself.

The protection scope of the present invention is not limited to the description and expression of the embodiments explicitly described above. In addition, it is again noted that the scope of protection of the present invention may not be limited due to obvious changes or substitutions in the technical field to which the present invention pertains.

Claims

In a door lock device comprising a first door lock housing installed on the outer surface of the door bordering the door to be installed and a second door lock housing electrically connected to the first door lock housing and installed on the inner surface of the door in a position facing each other, The surface of the platform is inclined from an upper end that meets the contact surface and protrudes forward so that an angle between the contact surface contacting the outer surface of the door of the first door lock housing and the platform surface on which the at least one camera is installed is 3 ° to 78 °. ,

The first door lock housing is a pull-type handle is installed in the second door lock housing the push-type handle, the first door lock housing inside the face recognition module, the second door lock housing, the door lock device is installed .
The method of claim 1,

A door lock device is installed on the center portion of the platform surface of the door lock device to display an object image obtained through the camera and to display a software key to which a password is input.
The method of claim 1,

Two cameras are installed on the platform surface of the door lock device, wherein the first camera obtains an object image using visible light, and the second camera obtains an object image using infrared light.