JP2017218801A - Door authentication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door authentication system capable of securing crime prevention while improving convenience.SOLUTION: A face authentication-type locking/unlocking system, on the basis of a person's face picture imaged by a camera 28, performs authentication processing for authenticating whether or not the person is a resident; and, on the basis of a result of the authentication, performs locking/unlocking control on an entrance door 17 provided at an entrance opening 16 using a locking/unlocking device 19. At a site 11 are set a first area A1 adjacent to the entrance opening 16 and an outside imaging area ES existing outside the first area A1, the outside imaging area ES being included in an imaging range of the camera 28. In this case, authentication processing is performed on the basis of a person's face picture in the outside imaging area ES, the face picture is imaged by the camera 28; when it is authenticated by the authentication processing that the person in the outside imaging area ES is a resident, whether the resident moves into the first area A1 or not is determined. Then, when it is determined that the resident has moved into the first area A1, the locking/unlocking device 19 unlocks the entrance door 17.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a door authentication system.

  In a building such as a house, when locking and unlocking the door of an entrance, a resident's face is photographed with a camera provided near the door, and the photographed resident's face image is a pre-registered resident's face image. A face authentication type locking / unlocking system that unlocks the door when they match is put into practical use. As this type of system, Patent Document 1 discloses that when a call button of an intercom provided on a door is operated for a long time, a face authentication process is performed. Is disclosed.

JP 2010-74458 A

  However, in the system of Patent Document 1, it is considered inconvenient because the face authentication process is not performed unless the call button is pressed and held, and the door is not unlocked. Further, the face authentication process itself may take several seconds, and in this case, it is necessary to wait for a predetermined time from when the call button is pressed until the door is unlocked.

  Therefore, it is conceivable that an authentication device (camera or the like) is installed in the middle of the route leading to the entrance and the face authentication processing is performed (started) at a position away from the door. In that case, when the resident arrives in front of the door, the authentication process is completed and the door can be unlocked, so the waiting time in front of the door can be eliminated.

  However, with such a configuration, since the door is unlocked at a position away from the door, it may be difficult to ensure crime prevention, such as a suspicious person entering the building aiming at the gap. .

  Such a problem may occur not only in a system that locks and unlocks a door based on face authentication, but also in a system that automatically opens and closes a door based on face authentication.

  The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a door authentication system capable of ensuring crime prevention while improving convenience.

  In order to solve the above-described problem, the door authentication system according to the first aspect of the present invention is based on a photographing means for photographing a person's face and whether or not the person is a regular person based on the face image of the person photographed by the photographing means. A door authentication system comprising: a face authentication unit that performs the authentication process; and a door drive unit that locks / unlocks / opens / closes the door of the doorway based on an authentication result by the face authentication unit, wherein the door authentication system is adjacent to the doorway. An area and a second area outside the first area and included in the photographing range by the photographing means are set, and the face authentication means is configured to capture the second area photographed by the photographing means. The authentication process is performed based on the person's face image in the case, and when the person in the second area is authenticated by the authentication process, the person moves from the second area to the first area. Whether or not A movement determining means for determining, and a door control means for controlling the door driving means to unlock or open the door when the movement determining means determines that the person has moved to the first area; It is characterized by providing.

  According to the present invention, since the first area adjacent to the entrance and the second area outside the first area and included in the imaging range by the imaging means are set, First, it passes through the second region. In this case, the face of the person is photographed by the photographing means in the second area, and an authentication process is performed to determine whether the person is a regular person based on the photographed face image. That is, in this case, since the authentication process is started (implemented) at a position relatively away from the entrance / exit, the authentication process can be completed before the person reaches near the entrance / exit. This eliminates the need to wait for authentication in front of the door as in the case of performing an authentication start operation in front of the door, thereby improving convenience.

  Further, when the person is authenticated as a regular person by the authentication process, it is determined whether or not the person has moved to the first area. As a result of the determination, when the person moves to the first region, that is, near the door, the door is unlocked or opened. In this case, the door will be unlocked or opened only when a legitimate person intends to pass through the doorway, so when a legitimate person is away from the door without intention to pass through the doorway It can be avoided that the door is unlocked or opened. Accordingly, it is possible to prevent a suspicious person from passing through the doorway aiming at the unlocked or opened gap, and thus it is possible to ensure crime prevention while improving convenience.

  The door authentication system according to a second aspect of the present invention is the door authentication system according to the first aspect, wherein the first person detecting means for detecting the presence of a person in the second area and the person is in the second area by the first person detecting means. And a photographing control means for starting photographing by the photographing means when it is detected.

  According to the present invention, when a person is in the second region included in the shooting range of the shooting unit, shooting by the shooting unit is started. Therefore, when the person is away from the second region, the photographing unit can be in a state in which power consumption is suppressed, such as turning off the power of the photographing unit. Thereby, energy saving can be aimed at.

  In the door authentication system according to a third aspect of the present invention, in the second aspect of the invention, a predetermined position that is located in the second area and away from the first area is set on the moving path toward the entrance / exit. The first person detecting means detects that a person moving to the entrance along the movement path has passed the predetermined position, and the photographing control means When it is detected that the predetermined position has been passed, photographing by the photographing unit is started.

  According to the present invention, a predetermined position is set in the second area and at a position away from the first area on the moving path toward the doorway, and the person moving to the doorway has passed the predetermined position. Is detected by the first person detecting means, the photographing by the photographing means is started. In this case, when the person heading for the entrance / exit is at a position away from the first area, the authentication process based on the person's face image can be started (implemented), so that the person before the person reaches the first area Can complete the authentication process. Thereby, it is possible to reliably avoid waiting for authentication in front of the door.

  The door authentication system according to a fourth aspect of the present invention is the door authentication system according to any one of the first to third aspects, wherein the movement determination means is configured so that a person who is authenticated by the face authentication means is a predetermined time from the authentication. The door control means determines whether the legitimate person has moved to the first area within the predetermined time by the movement determining means. The door driving means is controlled to unlock or open the door.

  If a legitimate person intends to pass through the doorway, it is considered that the person moves quickly toward the doorway. On the other hand, when a suspicious person tries to pass through the entrance / exit, it may be possible to move slowly to the vicinity of the entrance / exit while asking around. Therefore, in the present invention, focusing on this point, the door is unlocked or opened only when the person moves to the first area within a predetermined time after the authentication of the authorized person. I have to. In this case, even when the suspicious person is mistakenly authenticated as a legitimate person, the door can be prevented from being unlocked or opened, and thus the suspicious person can be prevented from passing through the doorway.

  A door authentication system according to a fifth aspect of the present invention is the door authentication system according to any one of the first to fourth aspects, further comprising second person detection means for detecting the presence of a person in the first area, It is characterized in that it is determined whether or not the regular person has moved to the first area based on a detection result by the second person detecting means.

  According to the present invention, whether or not there is a person in the first area is detected by the second person detection means, and it is determined whether or not a legitimate person has moved to the first area based on the detection result. In this case, if the authorized person moves to the first area, the door is automatically unlocked or opened, so that convenience can be improved.

  The door authentication system according to a sixth aspect of the present invention is the door authentication system according to any one of the first to fifth aspects, wherein the movement determination means determines that the authorized person has moved to the first area, and then the person is moved to the first area. A departure determination means for determining whether or not the person has left the first area is provided, and the door control means locks the door when the departure determination means determines that the person has left the first area. The door driving means is controlled to close.

  According to the present invention, after it is determined that the authorized person has moved to the first area, it is further determined whether or not the person has left the first area after the door is unlocked or opened by the determination. As a result of the determination, if the person leaves the first area, the door is locked or closed. This prevents the door from being locked or closed when a legitimate person simply passes by the vicinity of the door. Therefore, it is possible to prevent a suspicious person from passing through the doorway aiming at the unlocked or opened gap.

  The door authentication system according to a seventh aspect of the present invention is the door authentication system according to any one of the first to sixth aspects, wherein the length of the first region in the width direction of the door is substantially the same as or smaller than the width of the door. The length in the thickness direction of the door is smaller than the length in the width direction of the door.

  According to the present invention, since the first area can be set as an area near the door, the door is unlocked or opened only when a legitimate person moves to the vicinity of the door. In this case, it is possible to more reliably prevent a suspicious person from passing through the doorway aiming at a gap when the door is unlocked or opened.

The top view which shows the entrance / exit vicinity of a building. The figure which shows the electrical constitution of a locking / unlocking system. The flowchart which shows the flow of control processing.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing the vicinity of the entrance / exit of a building.

  As shown in FIG. 1, a building 10 is provided in the site 11. The building 10 is provided with an entrance 12, a living room 13, a toilet 14, and the like as indoor spaces. The entrance 12 is provided with an entrance 16 that leads to the outdoors, and the entrance 10 can be entered and exited. In this building 10, the entrance 16 is provided in the outer wall 25 facing west, and the outer wall 25 forms a corner with the outer wall 26 facing south on the north side.

  An entrance door 17 is provided at the entrance 16. The entrance door 17 is a sliding door, and the entrance door 16 is opened and closed by the entrance door 17. In addition, the entrance door 17 does not necessarily need to be a sliding door, and may be a rotation type hinged door. Further, the entrance 16 corresponds to an “entrance / exit”, and the entrance door 17 corresponds to a “door”.

  Although illustration is omitted, the site 11 is adjacent to the public road on the south side (lower side in FIG. 1), and a gate provided on the periphery of the site 11 from the public road (and outside the site) to the site 11 Access is possible through the access section. The entrance 16 is located on the north side (upper side in FIG. 1) with respect to the entrance / exit. Therefore, when a resident of the building 10 returns home through the site 11, It moves to the north side from the entrance / exit toward the entrance 16. In FIG. 1, the movement route R when the resident moves is indicated by an arrow line. That is, the movement route R is a return flow line when the resident returns to the building 10.

  The entrance door 17 is provided with a locking / unlocking device 19 for locking and unlocking the door 17. The locking / unlocking device 19 includes an electric lock that electrically locks / unlocks the entrance door 17. In the building 10, locking / unlocking by the locking / unlocking device 19 is performed based on face authentication by the face authentication device 20. The face authentication type locking / unlocking system will be described below with reference to FIG. 2 in addition to FIG. FIG. 2 is a diagram showing an electrical configuration of the locking / unlocking system. The locking / unlocking device 19 corresponds to a door driving means.

  As shown in FIGS. 1 and 2, the building 10 is provided with a camera 28 as photographing means. The camera 28 is constituted by a digital camera, for example, and is provided on the outdoor surface of the outer wall 26. The camera 28 uses the south side of the outer wall 26 on the site 11 as its shooting area E, and specifically includes the movement route R of the resident in the shooting area E. More specifically, the camera 28 is arranged so as to be positioned in front of a person who moves the moving route R toward the entrance 16, and therefore, the person who moves to the entrance 16 along the moving route R can be selected. The camera 28 can shoot from the front. In FIG. 1, the outer edge of the shooting area E of the camera 28 is indicated by two diagonal lines (two-dot chain line), and the area between the diagonal lines is the shooting area E. Further, the camera 28 can be switched between an operating state (power-on state) in which photographing of the photographing area E is performed and a non-operating state (power-off state) in which the photographing is stopped.

  The locking / unlocking system includes a face authentication device 20. The face authentication device 20 is a computer including a CPU, a RAM, a ROM, and the like, and is provided on the wall surface of the living room 13 in the building 10, for example. A camera 28 is connected to the face authentication device 20, and when a human face is photographed by the camera 28, the face image is input from the camera 28 to the face authentication device 20. Note that the face authentication device 20 may be provided integrally with the camera 28.

  The face authentication device 20 includes a control unit 21, a storage unit 22, and an authentication unit 23. A storage unit 22 and an authentication unit 23 are connected to the control unit 21. The control unit 21 controls the control of the present locking / unlocking system, and the storage unit 22 stores (registers) face images of residents living in the building 10 in advance as registered face images. The control unit 21 corresponds to a door control unit and a photographing control unit, and the authentication unit 23 corresponds to a face authentication unit.

  The authentication unit 23 performs authentication processing of a face image input from the camera 28 according to a command from the control unit 21. Specifically, the authentication unit 23 determines whether the face image input from the camera 28 matches the registered face image stored in the storage unit 22.

  A locking / unlocking device 19 is connected to the face authentication device 20 (control unit 21). The control unit 21 controls the locking / unlocking of the locking / unlocking device 19 based on the result of the authentication process by the authentication unit 23.

  Here, in the conventional face authentication type locking / unlocking system, for example, the face authentication process is performed based on the operation of the operation unit provided in the vicinity of the entrance door 17, so the face authentication process is performed. Until the entrance door 17 is unlocked, the resident has to wait for a predetermined time in front of the entrance door 17. Therefore, in this embodiment, in order to improve this point, a characteristic configuration is provided in the locking / unlocking system. The characteristic configuration will be described below.

  In the site 11, two human detection sensors 31 and 32 are provided. These human detection sensors 31 and 32 are, for example, human sensors using infrared rays, and both are provided on the outdoor surface of the outer wall 25. Each of these human detection sensors 31 and 32 detects the presence of a person in the site 11 (outdoors) using a predetermined area adjacent to the entrance 16 as a detection area. The detection areas of these human detection sensors 31 and 32 have a rectangular shape in plan view, and have different sizes (areas).

  Specifically, of the human detection sensors 31 and 32, the detection area of the human detection sensor 31 (hereinafter referred to as first area A1) is more than the detection area of the human detection sensor 32 (hereinafter referred to as detection area A2). The area is small. The first area A1 is a rectangular area in plan view that is long in the width direction of the entrance door 17 (in other words, the entrance door 16) (hereinafter also referred to as the door width direction). Specifically, in the first area A1, the length in the door width direction is substantially the same as the width of the entrance door 17, and the length of the entrance door 17 in the thickness direction (hereinafter also referred to as the door thickness direction) is the door width direction. It is set to about half of the length. The length of the first area A1 in the door width direction may be smaller than the width of the entrance door 17.

  Moreover, 1st area A1 is adjacent to the whole area (or substantially whole area) of the width direction of the entrance door 17 (entrance entrance 16). Therefore, when entering / exiting the building 10 from the site 11 through the entrance 16, the first area A1 is always passed. Therefore, the travel route R is a route that passes through the first area A1. The human detection sensor 31 corresponds to a second person detection unit, and the human detection sensor 32 corresponds to a first person detection unit.

  The detection area of the human detection sensor 32 (hereinafter referred to as the second area A2) is sufficiently larger than the first area A1, and is set to include the entire area of the first area A1. Specifically, the length of the second area A2 in the door width direction is sufficiently larger than the length of the first area A1 in the door width direction, and the length of the second area A2 in the door thickness direction is also the first area A1. It is sufficiently larger than the length of the door in the thickness direction.

  The southern side edge (edge) in the second area A2 intersects the moving route R, and is a position through which a resident or the like who moves toward the entrance 16 along the moving route R passes. . Hereinafter, the end edge on the south side in the second area A2 is also referred to as an edge position K. In this case, when a person who moves to the entrance 16 along the movement path R passes the edge position K, the person detection sensor 32 detects the person. Further, the edge position K is separated from the first area A1 in the door width direction, in other words, is separated in the direction in which the movement route R extends. The above-mentioned separation distance between the edge position K and the first area A1 (specifically, the separation distance in the extending direction of the movement route R) is made larger than the width of the entrance door 17, and more specifically twice the width of the entrance door 17. It is said to be about. This edge position K corresponds to a “predetermined position” described in the claims.

  Next, the relationship between the detection areas A1 and A2 of the person detection sensors 31 and 32 and the shooting area E of the camera 28 will be described.

  As shown in FIG. 1, the shooting area E of the camera 28 includes a detection area (first area A1) of the human detection sensor 31 in a part thereof. In this case, in the shooting area E, the area outside the first area A1 is the outer shooting area ES. In FIG. 1, the outer shooting area ES is shown with dot hatching. The outer photographing area ES is set so as to surround the first area A1 from three sides except the entrance 16 side. Therefore, a person who moves toward the entrance 16 in the site 11 enters the first area A1 after passing through the outer photographing area ES, and then enters the building 10 through the entrance 16 from the area A1. The first area A1 corresponds to the first area, and the outer shooting area ES corresponds to the second area.

  The detection area (second area A2) of the human detection sensor 32 is set so as to overlap with the outer imaging area ES. The edge position K of the second area A2 is located in the outer photographing area ES. Specifically, the entire area of the edge position K is located in the outer photographing area ES. Further, in the moving route R toward the entrance 16, the entire area of the route portion from the edge position K to the first area A1 is included in the second area A2 (and also the outer photographing area ES).

  Each of the human detection sensors 31 and 32 is connected to the face authentication device 20. Detection results are input to the face authentication device 20 from the individual detection sensors 31 and 32 each time. The face authentication device 20 (control unit 21) performs switching control for switching the camera 28 between an operating state (power ON state) and a non-operating state (power OFF state) based on the detection result from the human detection sensor 32. Further, the face authentication device 20 controls the locking / unlocking of the locking / unlocking device 19 based on the detection result from the human detection sensor 31 in addition to the result of the authentication process performed by the authentication unit 23 described above.

  Next, control processing executed by the control unit 21 will be described. This control process is repeatedly executed at a predetermined cycle. FIG. 3 is a flowchart showing the flow of control processing.

  As shown in FIG. 3, first, in step S11, based on the detection result from the human detection sensor 32, it is determined whether or not a person is in the second area A2. When a person is in the second area A2, for example, when a person who moves to the entrance 16 along the movement route R passes the edge position K of the second area A2 and enters the area A2, the process proceeds to step S12. move on.

  In step S12, it is determined whether or not timing by a timer started in step S17 described later is being executed. When the time measurement by the timer is being executed, the process proceeds to step S18, and when the time measurement by the timer is not being executed, the process proceeds to step S13.

  In step S13, a power ON signal is output to the camera 28, and the camera 28 is set in an operating state (power ON state). Thereby, shooting is started (implemented) by the camera 28, and the face of a person in the second area A <b> 2 (in other words, the outer shooting area ES) is shot by the camera 28. When a person's face is photographed by the camera 28, the photographed person's face image is output from the camera 28, and the outputted face image is acquired (step S14).

  In step S15, the authentication unit 23 performs an authentication process based on the acquired face image. In this authentication process, as described above, it is determined whether or not the acquired face image matches the registered face image stored in the storage unit 22 (step S16). Here, since this authentication process is performed based on the face image of the person photographed in the outside photographing area ES, the comparison is performed when the person is in the outside photographing area ES, that is, from the entrance 16 (the entrance door 17). This is performed when the user is at a remote location. Therefore, the authentication process can be completed before the person moves to the vicinity of the entrance 16.

  As a result of the authentication process, if the acquired face image does not match the registered face image, the photographed person is a person other than a resident such as a suspicious person (for example, a suspicious person), so the process proceeds to step S22. Perform locking process. In the locking process, a locking signal is output to the locking / unlocking device 19, and the entrance door 17 is locked by the locking / unlocking device 19. After this step S22, this control process is terminated.

  On the other hand, if the acquired face image matches the registered face image, that is, if the photographed person is authenticated as a resident (regular person), the process proceeds to step S17, and time counting by a timer is started. Thereby, the elapsed time after authentication as a resident is counted by the timer.

  In the subsequent step S18, based on the detection result from the human detection sensor 31, it is determined whether or not the resident has moved from the outer shooting area ES to the first area A1. If the resident has not moved to the first area A1, that is, if the resident is still in the outer photographing area ES, the process proceeds to step S22 and the locking process is executed.

  On the other hand, if the resident has moved to the first area A1, the process proceeds to step S19, where it is determined whether or not the elapsed time from the start of time measurement by the timer is within a predetermined time. Here, the predetermined time is set to a sufficient time required for the person to move from the edge position K of the second area A2 to the first area A1 along the movement route R, and is set to 10 seconds, for example. ing. When the elapsed time by the timer exceeds the predetermined time, the process proceeds to step S22, and the locking process is performed.

  When the elapsed time by the timer is within the predetermined time, the process proceeds to step S20, and the unlocking process of the entrance door 17 is performed. In the unlocking process, an unlocking signal is output to the locking / unlocking device 19, and the entrance door 17 is unlocked by the locking / unlocking device 19. Thus, the resident can open the entrance door 17 and enter the building 10 through the entrance 16.

  In continuing step S21, it is determined based on the detection result from the human detection sensor 31 whether the resident left the 1st area A1. When the resident leaves the first area A1, the process proceeds to step S22, and a locking process is performed. Thereby, when the resident simply passes through the first area A1, that is, when the resident leaves the area A1 immediately after entering the first area A1, the entrance door 17 is locked.

  Even when the resident enters the building 10 from the first area A1 through the doorway 16, since it is determined that the resident has left the first area A1, the process proceeds to step S22. If the resident has not left the first area A1, the determination in step S21 is repeated until the resident has left the first area A1.

  In the above-described step S11, when there is no person in the second area A2, for example, when a person leaves the second area A2, the process proceeds to step S23. In step S23, a power OFF signal is output to the camera 28, and the camera 28 is set in a non-operating state (power OFF state). In the subsequent step S24, the timer count is stopped. Thereafter, this control process is terminated.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  A first area A1 adjacent to the entrance 16 and an outer shooting area ES that is outside the first area A and included in the shooting area E by the camera 28 are set. In this case, the person heading for the entrance 16 first passes through the outer photographing area ES. In the outside photographing area ES, the face of the person is photographed by the camera 28, and an authentication process is performed to determine whether the person is a resident (regular person) based on the photographed face image. That is, in this case, since the authentication process is started (implemented) at a position relatively away from the entrance 16, it is possible to complete the authentication process before the person reaches near the entrance 16. As a result, it is not necessary to wait for authentication in front of the door 17 as in the case where the authentication start operation is performed in front of the entrance door 17, and convenience can be improved.

  Further, when the person is authenticated as a resident by the authentication process, it is determined whether or not the person has moved to the first area A1, and as a result of the determination, the person is in the first area A1, that is, the entrance. The entrance door 17 is unlocked when it moves to the vicinity of the door 17. In this case, the entrance door 17 is unlocked only when the resident intends to enter the building 10 from the entrance 16, that is, when he / she intends to return home. Therefore, it is possible to avoid unlocking the entrance door 17 when the resident is away from the entrance door 17 without intention to return home. As a result, since it is possible to prevent a suspicious person from entering the building 10 from the entrance 16 aiming at the unlocked gap, it is possible to ensure crime prevention while improving convenience. Can do.

  When the second area A2 is set to overlap the outer shooting area ES, and the human detection sensor 32 detects that there is a person in the overlapping area (the overlapping area with the second area A2 in the outer shooting area ES) In addition, shooting by the camera 28 is performed. In this case, when a person is away from the outer shooting area ES (specifically, the overlapping area), the operation of the camera 28 is stopped (the camera 28 is turned off), and the power consumption of the camera 28 is suppressed. It can be made the state. Therefore, energy saving can be achieved.

  In addition, an edge position K (edge position K of the second area A2) that is located in the outer photographing area ES and at a position away from the first area A1 is set on the moving route R toward the entrance 16. . In this case, when a person moving to the entrance 16 passes the edge position K, the person detection sensor 32 detects that the person has passed (in other words, has entered the overlapping area). Then, when the detection is made, shooting by the camera 28 is started (implemented). In this case, when the person heading for the entrance 16 is at a position away from the first area A1, the authentication process based on the person's face image can be started (implemented). The authentication process can be completed before reaching. Thereby, it is possible to reliably avoid waiting for authentication in front of the front door 17.

  If the resident intends to go home, it is considered that the resident moves quickly toward the entrance 16. On the other hand, when a suspicious person tries to enter the building 10 from the entrance 16, it can be considered to slowly move to the vicinity of the entrance 16 while asking around. Therefore, in the above-described embodiment, paying attention to this point, the entrance door 17 is unlocked only when the person moves to the first area A1 within a predetermined time after being authenticated as a resident. I tried to do it. In this case, since it is possible to prevent the entrance door 17 from being unlocked even if the suspicious person is erroneously authenticated as a resident, it is possible to prevent the suspicious person from entering the building 10. it can.

  Whether or not there is a person in the first area A1 is detected by the human detection sensor 31, and based on the detection result, it is determined whether or not the resident has moved to the first area A1. In this case, if the resident moves to the first area A1, the entrance door 17 is automatically unlocked, so that convenience can be improved.

  After it is determined that the resident has moved to the first area A1, it is then determined whether the resident has left the first area A1 after the entrance door 17 is unlocked by the determination, and the result of the determination When the resident leaves the first area A1, the entrance door 17 is locked. Thereby, when a resident just passes the entrance door 17 vicinity, it can prevent that the entrance door 17 remains unlocked. Therefore, it is possible to prevent a suspicious person from entering the building 10 through the entrance 16 aiming at the unlocked gap.

  About 1st area A1, the length of the width direction (door width direction) of the entrance door 17 is made substantially the same as the width of the entrance door 17, and the length of the thickness direction (door thickness direction) of the entrance door 17 is made into the door width direction. It was smaller than the length. In this case, since the first area A1 can be set as an area near the entrance door 17, the entrance door 17 is unlocked only when the resident moves to the vicinity of the entrance door 17. In this case, it is possible to more reliably prevent a suspicious person from entering the building 10 through the entrance port 16 aiming at a gap where the entrance door 17 is unlocked.

  When a moving person's face is photographed by the camera 28, the photographing cannot be performed well, and as a result, the resident (regular person) is not authenticated as a resident. May occur. In that respect, in the above embodiment, since the camera 28 is arranged at a position where the face of the person moving toward the entrance 16 along the movement path R can be photographed from the front, the camera 28 moves along the movement path R. A person's face can be photographed by the camera 28 throughout the day. In this case, the face can be repeatedly photographed while the person is moving, so that when the person is a resident, authentication that the person is a resident can be reliably performed.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  In the above embodiment, since the shooting area E of the camera 28 is set so as to include the detection area (first area A1) of the human detection sensor 31, the outer shooting area ES and the first area A1 are adjacent to each other. However, the outer photographing area ES and the first area A1 may be separated by separating the photographing area E of the camera 28 from the first area A1. Also in this case, since the outer shooting area ES is set outside the first area A1, the face can be shot at a position away from the entrance 16 (that is, the outer shooting area ES), and thus the authentication process is performed. Can be started. Therefore, also in this case, authentication processing can be completed before reaching the vicinity of the entrance 16, and as a result, it is not necessary to wait for authentication in front of the entrance door 17.

  The human detection sensor 32 may not be provided. Also in this case, if the camera 28 is always in an operating state, when a person enters the outside photographing area ES, the person's face is photographed by the camera 28 and authentication processing is performed based on the photographed face image. Is implemented. That is, also in this case, since the authentication process can be started at a position away from the entrance 16, the authentication process can be completed before the person reaches near the entrance 16. There is no need to wait for authentication before.

  In the above embodiment, based on the detection result of the human detection sensor 31, it is determined whether or not an authorized person has moved to the first area A1 (corresponding to the first area). Is not necessarily limited to this. For example, a contact sensor that detects that a person touches the handle of the entrance door 17 is provided, and whether a legitimate person has moved to the first area (adjacent to the entrance door 16) based on the detection result of the contact sensor. It may be determined whether or not. In this case, since the entrance door 17 is unlocked only when a legitimate person touches the handle, it is possible to reliably prevent a suspicious person from entering the building 10 from the entrance 16 aiming at the unlocked space. can do. In this case, the first region is a region near the handle.

  -The building 10 may be provided with a paddle (soil floor) adjacent to the outdoor side of the entrance 16. Therefore, in that case, the hit may be set as a detection area (first area A1) by the human detection sensor 31. Since such a beating is usually provided only near the entrance 16, the first area A <b> 1 can be set near the entrance 16 also in this case.

  In the above embodiment, the door authentication system of the present invention is applied to the entrance door 17 of the building 10, but may be applied to other doors in the building 10, such as doors provided at the entrance (corresponding to doorways). Good. Further, the door authentication system of the present invention may be applied to other than doors of buildings, for example, it may be applied to doors provided at entrances and exits to a site (for example, gates). In this case, the entrance / exit corresponds to the entrance / exit.

  The door authentication system of the present invention is not necessarily applied to a door locking / unlocking system, and may be applied to, for example, a door opening / closing system. That is, you may apply this invention to the automatic door system which opens and closes a door by opening-and-closing drive parts (door drive means), such as a motor.

  DESCRIPTION OF SYMBOLS 10 ... Building, 11 ... Site, 16 ... Entrance door as doorway, 17 ... Entrance door as door, 19 ... Locking and unlocking device as door driving means, 28 ... Camera as photographing means, 21 ... Door control means, movement Control unit as determination unit, photographing control unit and leaving determination unit, 23: authentication unit as face authentication unit, 31: human detection sensor as second person detection unit, 32 ... human detection as first person detection unit Sensor, A1... First area as first area, ES... Outer shooting area as second area, R... Movement path, K.

Claims (7)

Photographing means for photographing a person's face;
Face authentication means for performing authentication processing as to whether or not the person is a regular person based on the face image of the person photographed by the photographing means;
A door authentication system comprising door driving means for locking / unlocking or opening / closing the door of the entrance / exit based on the authentication result by the face authentication means,
A first area adjacent to the entrance and exit, and a second area outside the first area and included in the imaging range by the imaging means are set,
The face authentication means performs the authentication process based on a human face image in the second area imaged by the imaging means,
A movement determination means for determining whether or not the person in the second area has been moved from the second area to the first area when the person in the second area is authenticated by the authentication process;
Door control means for controlling the door drive means to unlock or open the door when the movement determination means determines that the person has moved to the first region;
A door authentication system comprising: First person detecting means for detecting that there is a person in the second region;
Shooting control means for starting shooting by the shooting means when the first person detecting means detects that a person is in the second area;
The door authentication system according to claim 1, further comprising: On the movement path toward the entrance, a predetermined position is set in the second area and away from the first area,
The first person detecting means detects that a person moving to the entrance along the moving path has passed the predetermined position,
The door authentication system according to claim 2, wherein the photographing control unit starts photographing by the photographing unit when it is detected that a person moving to the entrance / exit has passed the predetermined position. The movement determination means determines whether or not a person who has been authenticated by the face authentication means has moved to the first area within a predetermined time from the authentication,
The door control means controls the door drive means to unlock or open the door when the movement determination means determines that the authorized person has moved to the first area within the predetermined time. The door authentication system according to any one of claims 1 to 3, wherein: Comprising a second person detecting means for detecting the presence of a person in the first area;
The said movement determination means determines whether the said regular person moved to the said 1st area | region based on the detection result by the said 2nd person detection means. The door authentication system according to one item. After it is determined that the legitimate person has moved to the first area by the movement determination means, the leaving determination means for determining whether or not the person has left the first area,
The door control means controls the door driving means to lock or close the door when it is determined by the leaving determination means that a person has left the first area. The door authentication system according to any one of 1 to 5.   The length in the width direction of the door is substantially the same as or smaller than the width of the door, and the length in the thickness direction of the door is longer than the length in the width direction of the door. The door authentication system according to any one of claims 1 to 6, wherein the door authentication system is small.

Images