JP7344664B2 - door lock device - Google Patents

Description

One aspect of the present invention relates to a door lock device that allows a door to be unlocked based on predetermined conditions.

Conventionally, there have been door lock devices whose security performance has been improved in various ways. Examples of such door lock devices include those configured to unlock the door using electrical processing or biometric authentication such as iris authentication or facial authentication. Patent Document 1 discloses an iris authentication device for doors that unlocks doors by iris authentication. On the other hand, Patent Document 2 discloses a database unit that stores acquired image information of a visitor and visitor information associated therewith, and a database unit that stores acquired image information of a visitor and visitor information associated therewith, and a database section that stores information on images taken by a camera and the acquired image information. An intercom device is disclosed that is provided with an image authentication section for comparison, and performs processing such as displaying visitor information on a display section when the comparison results match.

Japanese Patent Application Publication No. 2017-122376 Japanese Patent Application Publication No. 2007-104384

However, the configuration in which the door is unlocked by iris authentication as described in Patent Document 1 is not sufficient as a means for suppressing crimes, harassment, etc. by visitors. Furthermore, although the intercom device described in Patent Document 2 is expected to have a certain suppressive effect against certain crimes and harassment against visitors, it may not be sufficient in some cases. Therefore, there is a need for a door lock device that can further suppress crimes and harassment by visitors.

The present invention takes the following measures to solve the above problems. In the following description, reference numerals in the drawings are added in parentheses to facilitate understanding of the invention, but the constituent elements of the present invention are not limited to those added. It should be interpreted broadly to the extent that a trader can technically understand it.

One means of the present invention is
an unlocking mechanism (21) that unlocks the openable door;
a sensor (17) that detects a visitor in front of the door;
an imaging unit (11) that photographs the visitor;
a shutter (12) that opens and closes the imaging section;
a storage unit (22) that stores authentication information;
a shutter drive unit (16) that opens the shutter when the sensor detects a visitor;
an information processing unit (10) that determines whether the visitor is a registrant authorized to unlock the door based on the authentication information;
The information processing unit (10) further includes:
When the determination is successful, the visitor makes the unlocking mechanism operable;
When the determination fails, the imaging unit acquires an image of the visitor and notifies the visitor.
It is a door lock device.

According to the door lock device having the above configuration, by notifying the visitor who has failed the authentication judgment that the image has been obtained, it is possible to prevent crimes, harassment, etc. by the visitor, and to obtain the effect of deterring crimes, etc. I can do it. Note that the notification to the visitor in this specification includes not only explicit notification but also implicit notification by making the visitor aware of a specific state.

In the above door lock device, preferably,
The shutter is configured so that the visitor can visually confirm that the shutter is closed,
When the information processing section fails in the determination, the information processing section notifies the visitor by closing the shutter.

According to the door lock device having the above configuration, for example, by using a simple configuration in which the front part of the shutter is processed with colors or patterns, a notification can be sent to visitors who have failed authentication judgment by making them aware that they have been photographed. This can have the effect of deterring crimes, etc.

In the above door lock device, preferably,
The shutter is colored.

According to the door lock device having the above configuration, with a simple configuration, it is possible to notify a visitor who has failed the authentication determination by making him/her aware that he/she has been photographed, thereby achieving the effect of deterring crimes and the like.

In the above door lock device, preferably,
When the information processing section fails in the determination, the information processing section notifies the visitor by outputting a sound, emitting light from a light emitting section, or displaying an image.

According to the door lock device having the above configuration, it is possible to reliably notify a visitor who has failed the authentication determination that the visitor has been photographed, and it is possible to more effectively prevent crimes by the visitor.

In the above door lock device, preferably,
The authentication information includes biometric information of a registrant who is permitted to unlock the door.

According to the door lock device having the above configuration, it is possible to unlock the door by performing biometric authentication such as face authentication, voice authentication, fingerprint authentication, or palm print authentication.

In the above door lock device, preferably,
The authentication information includes biometric information of a registrant who is prohibited from unlocking;
The information processing unit performs a process when the determination fails when the visitor is a registrant who is prohibited from unlocking the door.

According to the door lock device having the above configuration, by registering uninvited visitors in advance, it is possible to avoid contact with such visitors. Moreover, crimes etc. by such visitors can be deterred.

In the above door lock device, preferably,
The authentication information includes biometric information of a registrant who is prohibited from unlocking;
When the information processing unit determines that the visitor is a registrant who is prohibited from unlocking, the information processing unit acquires an image of the visitor using the imaging unit and uses a means prepared for the registrant. Give notice.

According to the door lock device having the above configuration, by registering uninvited visitors in advance, it is possible to avoid contact with such visitors. Furthermore, it becomes possible to convey messages prepared in advance to such visitors, and it becomes possible to more effectively deter crime and the like.

FIG. 1 is a block diagram showing the configuration of a door lock device. FIG. 2 is a flowchart showing the process flow of the door lock device according to the embodiment. FIG. 3 is a flowchart showing the process flow of the door lock device according to the first modification. FIG. 4 is a flowchart showing the process flow of the door lock device according to the second modification. FIG. 5 is a flowchart showing the process flow of the door lock device according to the third modification.

The door lock device of the present invention has a configuration in which the unlocking mechanism is made operable by performing biometric authentication such as facial recognition, and when a visitor who has not been registered in advance comes to visit, the door lock device captures an image of the visitor. One of its features is that it is configured to recognize that it has taken an image. One of the purposes of the door lock device of the present invention is to obtain the effect of deterring crimes and harassment by visitors through this configuration.

The door lock device of the present invention will be specifically explained with reference to the drawings according to the following configuration. However, the embodiments described below are merely examples of the present invention, and the technical scope of the present invention should not be construed as limiting. In addition, in each drawing, the same components are given the same reference numerals, and their explanations may be omitted.
1. Embodiment 2. Modified example (1) Modified example 1
(2) Modification 2
(3) Modification example 3
(4) Other variations 3. Features of the present invention 4. Additional information

<1. Embodiment>
<Configuration of door lock device 1>
FIG. 1 is a block diagram showing the functional configuration of a door lock device 1 of this embodiment. As shown in FIG. 1, the door lock device 1 of this embodiment includes an image sensor 11, a shutter 12, a lens 13, an image processing section 14, an image recognition section 15, a shutter drive section 16, a sensor 17, a microphone 18, an amplifier 19, a voice recognition section 20, an electronic lock 21, and a storage section 22. The door lock device 1 of this embodiment may be entirely built into a door, may be entirely placed outside the door, or may be partially built into the door.

<Image sensor 11>
The image sensor 11 is an image sensor such as a CCD or CMOS, and is a photoelectric conversion element capable of acquiring an image. The image sensor 11 outputs an image signal acquired by imaging to the image processing section 14. The image sensor 11 may capture moving images or still images.

<Lens 13>
The lens 13 is disposed between the image sensor 11 and the shutter 12, and functions to focus light from a subject onto the image sensor. In this embodiment, the visitor in front of the door is the subject to be imaged. The lens 13 includes one or more lenses, and may be a lens group including two or more lenses. Further, the lens 13 may include an optical element such as an IR filter or an ND filter.

In this embodiment, the image sensor 11 and the lens 13 constitute an "imaging section". The imaging unit images the visitor. In this specification, acquiring an image by the imaging unit is referred to as "imaging."

<Shutter 12>
The shutter 12 is disposed between the lens 13 and the subject so as to be openable and closable. The shutter 12 is driven by a shutter drive section 16 composed of a motor or the like, and a blade member opens and closes in front of the lens 13. The shutter 12 is arranged as a protective shutter for protecting the image sensor 11 and the lens 13 and for notifying the visitor that an image has been captured. However, the shutter 12 may be operated when the image sensor 11 releases the image to take an image. The shutter 12 is opened only when a visitor comes and is closed at other times. The shutter 12 includes, for example, a plurality of blade members, and controls the irradiation of light onto the image sensor 11 by operating the blade members. When the shutter 12 is closed, light is not irradiated to the lens 13 and the image sensor 11, and dirt such as dust and sand is prevented from adhering to the lens 13.

The blade surface on the visitor side (outer side) of the shutter 12 is colored, for example, red. Therefore, the visitor in front of the door visually confirms that the protective shutter of the camera is closed, and becomes aware that an image has been taken. Further, the shutter 12 may be configured to make a loud sound so that the visitor is easily aware that the shutter 12 is closed.

<Image processing unit 14>
The image processing unit 14 is, for example, an ISP (Image Signal Processor), and converts the image signal acquired by the image sensor 11 into image data, and outputs the image data to the image recognition unit 15.

<Image recognition unit 15>
The image recognition unit 15 acquires data regarding the visitor's face from the captured image data and outputs it to the information processing unit 10. The face data output from the image recognition unit 15 to the information processing unit 10 is data necessary for face authentication, and includes, for example, data regarding feature points at multiple locations on the visitor's face.

<Shutter drive unit 16>
The shutter drive section 16 operates to open and close the shutter 12 under the control of the information processing section 10 . The shutter drive unit 16 is, for example, a motor that is directly or indirectly connected to a blade member that constitutes the shutter 12.

<Sensor 17>
The sensor 17 is configured to detect that a visitor has come in front of the door and transmit it to the information processing unit 10. The sensor 17 is, for example, an IR (infrared) sensor that can detect objects in front of the door, but is not limited thereto. The sensor 17 may be, for example, an imaging device such as a camera or an infrared camera, a sound sensor, an infrared sensor, an odor sensor, a temperature sensor, a weight sensor, a photo interrupter, a photo reflector, or a detection device such as a human sensor. . Further, the sensor 17 may be an acceleration sensor. In the case of a configuration using an acceleration sensor, the structure may be such that a visitor is detected by detecting shocks or vibrations applied to the door.

<Mike 18>
The microphone 18 is a sound collector configured to acquire sounds from in front of the door and output them to the amplifier 19.

<Amplifier 19>
The amplifier 19 amplifies a signal in a predetermined sound range in the voice acquired by the microphone 18 and outputs the amplified signal to the voice recognition section 20 . The amplifier 19 may be, for example, a bandpass filter that amplifies signals in the human voice range and attenuates other low and high frequencies. Amplifier 19 may be either an analog filter or a digital filter.

<Voice recognition unit 20>
The speech recognition section 20 converts the speech input from the amplifier 19 into data, processes the data into data necessary for speech recognition, and outputs the data to the information processing section 10 . The voice recognition unit 20 removes noise from the voice in front of the door and outputs voiceprint data indicating the characteristics of the visitor's voice to the information processing unit 10.

<Electronic lock 21>
The electronic lock 21 is a lock that electrically switches between an unlocked state in which the door can be opened and a locked state in which the door cannot be opened and closed. The electronic lock 21 can be switched between a valid state and a disabled state by the information processing unit 10. When the electronic lock 21 is in an invalid state, the lock cannot be unlocked even if the electronic lock 21 has an unlocking key. In this embodiment, when the electronic lock 21 is enabled, when a visitor holds an ID card capable of wireless communication over the card reading section of the electronic lock 21, the card reading section reads unlocking data from the ID card. When predetermined data is confirmed, the electronic lock 21 is unlocked. When the electronic lock 21 is unlocked, the door changes from a locked state to an unlocked state. The unlocked door can be opened by a visitor.

The electronic lock 21 is not limited to the configuration that is unlocked using an ID card as described above. For example, a configuration may be adopted in which voiceprint authentication is performed based on the visitor's voice and the electronic lock 21 is unlocked when the authentication is successful. Furthermore, the electronic lock 21 may be configured to be unlocked by authentication based on biometric information such as iris authentication. Furthermore, although a modification will be specifically described, instead of the electronic lock 21, a lock that is unlocked by a mechanical structure may be employed. The electronic lock 21 or a lock that can be replaced with the electronic lock 21 is an example of the configuration of the "unlocking mechanism" in the present invention.

<Storage unit 22>
The storage unit 22 is a storage device such as a rewritable semiconductor memory or a magnetic memory, and stores authentication information such as biometric information for authenticating a visitor. In this embodiment, the storage unit 22 stores face data for face authentication of a person registered in advance who is permitted to unlock the door. The storage unit 22 stores voiceprint data for voiceprint authentication and iris data for iris authentication in order to unlock the door using biometric information. The storage unit 22 may be configured to be able to store captured images of visitors. Furthermore, the storage unit 22 may store programs executed by the information processing unit 10 and the like.

<Information processing unit 10>
The information processing unit 10 is a central processing unit (CPU) in the door lock device 1, and is composed of a semiconductor integrated circuit or the like. The information processing unit 10 performs face authentication to compare the face data of the unlock permitter stored in the storage unit 22 and the face data of the visitor input from the image recognition unit 15 to check whether they match. Then, it is determined whether the visitor is a registrant authorized to unlock the electronic lock 21. The information processing unit 10 also performs voiceprint authentication by comparing the voiceprint data stored in the storage unit 22 and the voiceprint data input from the voice recognition unit 20, and determines that the authentication is successful when it is confirmed that they match. to unlock the electronic lock 21.

When the sensor 17 detects the arrival of a visitor, the information processing section 10 operates the shutter drive section 16 to open the shutter 12 to take an image of the visitor. When the shutter 12 is opened, the information processing unit 10 controls the image sensor 11 to capture a moving image or a still image of the visitor. If the face data of the visitor does not match the face data of the unlocking permitter stored in the storage unit 22, the information processing unit 10 determines that face authentication has failed, and closes the shutter 12.

The information processing unit 10 has various other functions, and these specific functions will be specifically explained in the operation example described below.

Note that the information processing unit 10 may be configured with one semiconductor integrated circuit together with one or more other components of the door lock device 1.

<Example of operation of door lock device 1>
Next, an example of the operation of the door lock device 1 will be described with reference to the flowchart in FIG. 2.

<S100>
When a visitor comes to the door, the sensor 17 detects the visitor's arrival (S100).

<S101>
Next, the information processing section 10 operates the shutter drive section 16 to open the shutter 12.

<S102>
Next, the information processing unit 10 operates the image sensor 11 to capture an image of the visitor. This image may be either a moving image or a still image.

<S110>
An image signal captured by the image sensor 11 is converted into image data by the image processing section 14. The image recognition unit 15 extracts data regarding feature points on the visitor's face from this image data, and outputs it to the information processing unit 10 as facial data. The information processing unit 10 performs face authentication by checking whether or not there is any face data that matches the visitor's face data among the face data of the unlock permitter stored in the storage unit 22 ( S110). If the face data of the person who is permitted to unlock the door is found to match the face data of the visitor, it is determined that the visitor is the registered person who is permitted to unlock the door, and the face authentication is determined to be successful (Y in S110). On the other hand, if the face data of the person who is allowed to unlock the door and matches the face data of the visitor is not confirmed, it is determined that the visitor is not the registered person who is allowed to unlock the door, and the face authentication is determined to have failed (N at S110).

<S111>
If face authentication is successful (Y in S110), the information processing unit 10 allows the visitor to operate the electronic lock 21. That is, the electronic lock 21 is inoperable until face authentication is successful. More specifically, the electronic lock 21 is in a sleep state in which the ID card cannot be read until face authentication is successful.

<S120>
The electronic lock 21 is in a state in which it can read an ID card located close to the card reading section. When the visitor holds the ID card over the card reading section, the card reading section reads the unlocking data from the ID card, and the electronic lock 21 is unlocked to check whether it matches the unlocking data registered in advance. Authentication is performed (S120).

<S121>
If data matching the unlock data registered in advance is confirmed (Y in S120), the electronic lock 21 is unlocked, and the electronic lock 21 changes the door from the locked state to the unlocked state (S121).

<S122>
On the other hand, if data matching the unlocking data registered in advance is not confirmed (N at S120), the electronic lock 21 is not unlocked and the series of processes ends (S122).

<S112>
By the way, if face authentication fails in the process of S110 (N in S110), the information processing unit 10 records a still image or a moving image captured by the image sensor 11 in the storage unit 22 (S112). Note that storing in the storage unit 22 is referred to as "recording".

<S113>
Next, the information processing section 10 operates the shutter drive section 16 to close the shutter 12. As mentioned above, since the outer surface of the shutter 12 is colored red or the like, when the shutter 12 is closed, the visitor becomes aware that the shutter 12 that protects the camera is closed. As a result, the visitor is implicitly notified that the image has been acquired and recorded by the door lock device 1 (S113).

<S114>
When the shutter 12 is closed, the series of processes ends (S114).

Through the above series of processes, the electronic lock 21 is unlocked when a visitor visits, and when the visitor is not the person authorized to unlock the lock, the visitor is notified that the image has been acquired and recorded. Processing takes place.

<2. Modified example>
Next, a modification of this embodiment will be described. Although various modifications can be made to this embodiment, some of them are described below, and the embodiment and the following modifications do not represent all configurations and operations of the present invention.

<(1) Modification 1>
FIG. 3 is a flowchart showing the flow of processing in Modification 1 of the operation example of the door lock device 1. Compared to the process shown in FIG. 2, the difference is that the processes in S102 and S110 are replaced with the processes in S102a and S110a, respectively, and the other points are the same. Here, only the differences will be explained.

<S102a>
After the shutter 12 is opened (S101), the information processing unit 10 operates the microphone 18 to acquire the visitor's voice (S102a). At this time, the door lock device 1 may request the visitor to read out a predetermined sentence through an audio output unit or a display unit (none of which is shown).

<S110a>
The microphone 18 outputs the acquired voice including the visitor's voice to the amplifier 19. The amplifier 19 amplifies a signal in a predetermined range of the acquired visitor's voice and outputs the amplified signal to the voice recognition unit 20 . The voice recognition section 20 converts the voice input from the amplifier 19 into voiceprint data and outputs it to the information processing section 10 . The information processing unit 10 performs voiceprint authentication by checking whether there is any voiceprint data that matches the visitor's voiceprint data among the voiceprint data of the unlock permitter stored in the storage unit 22 ( S110a). If the voiceprint data of the person who is permitted to unlock the door is found to match the voiceprint data of the visitor, it is determined that the visitor is the registered person who is permitted to unlock the door, and the voiceprint authentication is determined to be successful (Y in S110a). On the other hand, if the voiceprint data of the person who is allowed to unlock the door and matches the voiceprint data of the visitor is not confirmed, it is determined that the visitor is not the registered person who is allowed to unlock the door, and voiceprint authentication is determined to have failed (N at S110a).

<(2) Modification 2>
FIG. 4 is a flowchart showing a process flow in a second modification of the operation example of the door lock device 1. Compared to the process shown in FIG. 2, the difference is that the process in S111 is replaced with the process in S111a. Furthermore, the configuration of the electronic lock 21 is different. Here, only the differences will be explained.

The electronic lock 21 is covered by a shutter (not shown) until face authentication is successful. A visitor cannot access the electronic lock 21 while it is covered by the shutter. If the face authentication is successful, the information processing unit 10 opens the shutter of the electronic lock 21, allowing the visitor to access the electronic lock 21.

<S111a>
That is, if face authentication is successful in the process of S110 (Y in S110), the information processing unit 10 opens the cover of the electronic lock 21 and allows the visitor to access the electronic lock 21.

<(3) Modification 3>
FIG. 5 is a flowchart showing the flow of processing in the third modification example of the operation of the door lock device 1. Compared to the process shown in FIG. 2, the difference is that the processes after S111 are replaced with S111b and S130. Further, the door lock device 1 includes a mechanical lock having a keyhole instead of the electronic lock 21. Here, only the differences will be explained.

The keyhole of the lock placed in place of the electronic lock 21 is covered by a shutter (not shown) until face authentication is successful. When covered by the shutter, visitors cannot access the keyhole. If the face authentication is successful, the information processing unit 10 opens the shutter of the keyhole and allows the visitor to insert the physical key into the keyhole.

<S111b to S130>
That is, if face authentication is successful in the process of S110 (Y in S110), the information processing unit 10 opens the cover of the keyhole of the lock, allows the visitor to access the keyhole (S111b), and ends the process (S130). ). Visitors can unlock the door by inserting the key into the keyhole and turning it.

<(4) Other modifications>
The door lock device 1 of the present embodiment and the modified examples may have the following modified configurations or processes.

In the embodiments and modifications, face authentication or voiceprint authentication is performed when determining whether a visitor is a registered visitor, but authentication methods other than these may be employed. For example, biometric authentication such as fingerprint authentication or palm print authentication may be employed.

However, a configuration that employs facial recognition is preferable because the visitor can perform authentication without performing any special operations.

In the embodiment, a configuration has been described in which the electronic lock 21 is unlocked by authentication using an ID card, but biometric authentication such as voiceprint authentication, fingerprint authentication, or palmprint authentication may be adopted.

In addition, in the third modification example, a configuration is described in which a lock having a keyhole is provided instead of the electronic lock 21, but for example, it has keys from 0 to 9, and can be unlocked by key operation in accordance with the password. An unlocking mechanism may also be adopted.

In the embodiment, a configuration has been described in which the outer surface of the shutter 12 is colored red or the like, and when the shutter 12 is closed, the visitor is notified that an image has been recorded. method may be adopted. For example, it may be configured to notify the visitor by making a relatively loud shutter sound when the shutter 12 is closed. Further, a configuration may be adopted in which characters such as "Photography Complete" are displayed on the outer surface of the shutter 12.

Furthermore, the door lock device 1 may be provided with an audio output section as a separate component from the shutter 12, and may be configured to notify the visitor that the image has been taken by outputting a sound such as "I took a picture." Alternatively, the door lock device 1 may be configured to include an image display section, and the visitor may be notified that the image has been taken by displaying the fact that the image has been taken on the image display section. Alternatively, the door lock device 1 may include a light emitting unit such as an LED, and the light emitting unit may blink repeatedly when an image is taken to notify the visitor that the image has been taken.

Furthermore, in addition to or in place of pre-registering the persons who are permitted to unlock, the storage unit 22 may be configured to pre-register the persons who are prohibited from unlocking. In this case, the storage unit 22 stores biometric information such as face data of the registrant who is prohibited from unlocking. If the information processing unit 10 determines that the visitor is a registrant who is prohibited from unlocking, the information processing unit 10 acquires an image of the visitor and notifies the visitor through the shutter 12 or the like, assuming that the authentication has failed. The configuration is as follows.

Alternatively, if it is determined that the visitor is a registrant who is prohibited from unlocking the door, the information processing unit 10 may display a message prepared in advance for the visitor via an audio output unit or an image display unit (not shown). It may also be configured to convey a message. At this time, the registrant who is prohibited from unlocking may be an acquaintance who simply wishes to convey an absentee message.

<3. Features of the present invention>
The present invention, which has been described above by exemplifying the embodiment and its modifications, has the following characteristics.

In the door lock device 1, when a visitor is detected, the shutter 12 that covers the imaging section (including the imaging device 11 and lens 13) is opened, and when the visitor is not a person authorized to unlock the door, the imaging section opens The system is configured to acquire images and notify the visitor that the image has been taken. With this configuration, the door lock device 1 notifies the visitor who has failed the authentication judgment and is not the person authorized to unlock the door that the image has been obtained, thereby preventing crimes and harassment by the visitor. can have a deterrent effect.

Further, the door lock device 1 is configured so that a visitor can visually confirm that the shutter 12 is closed. Further, the information processing unit 10 is configured to notify the visitor that an image has been taken by closing the shutter 12 when the authentication determination fails. With this configuration, it is possible to notify visitors who have failed the authentication determination by making them aware that they have been photographed, thereby achieving the effect of deterring crimes and the like.

Further, in the door lock device 1, the outer surface of the shutter 12 is colored red or the like. According to such a configuration, with a simple configuration, it is possible to notify a visitor who has failed the authentication determination by making him/her aware that he/she has been photographed, thereby achieving the effect of deterring crimes and the like.

In addition, in the door lock device 1, when the visitor fails the authentication determination, the information processing unit 10 acquires an image of the visitor by outputting audio, emitting light from the light emitting unit, or displaying the image. It is also possible to configure the system to be able to notify. According to such a configuration, it is possible to reliably notify a visitor who has failed the authentication determination that the photograph has been taken, and it is possible to more effectively prevent crimes, etc. by the visitor.

Further, the door lock device 1 is configured to use biometric information of a registrant who is permitted to unlock the door as authentication information used for authentication. With this configuration, it is possible to unlock the door by performing biometric authentication such as face authentication, voice authentication, fingerprint authentication, or palm print authentication.

Further, in the door lock device 1, the storage unit 22 stores the biometric information of the registrant who is prohibited from unlocking, and the information processing unit 10 stores the biometric information of the registrant who is prohibited from unlocking the door. It may also be configured to perform processing when authentication fails. According to such a configuration, by registering uninvited visitors in advance, it is possible to avoid contact with such visitors. Moreover, crimes etc. by such visitors can be deterred.

Further, in the door lock device 1, the storage unit 22 stores the biometric information of the person who is prohibited from unlocking the door as described above, and when it is determined that the visitor is the person who is prohibited from unlocking the door, the information processing unit 10 stores the biometric information of the person who is prohibited from unlocking the door. In addition to acquiring the visitor's image, the visitor may be notified by means prepared in advance for the visitor. According to such a configuration, a message prepared in advance can be conveyed to a predetermined visitor, and it is possible to more effectively obtain a deterrent effect against crimes and the like.

<4. Additional information＞
The embodiments and modifications of the present invention have been specifically described above. The above description is merely an explanation as one configuration example and one operation example, and the scope of the present invention is not limited to these embodiments and modifications, but is within the range that can be grasped by a person skilled in the art based on the same technical idea. It can be widely interpreted.

For example, each of the specific processes described in the embodiments is merely one embodiment, and similar processes that provide the same effects may be employed.

The door lock device of the present invention is suitably applied to doors of houses etc. that have improved security.

1...Door lock device 10...Information processing section 11...Imaging element 11...Imaging section (Imaging element 12...Shutter 13...Lens 14...Image processing section 15...Image recognition section 16...Shutter driving section 17...Sensor 18...Microphone 19... Amplifier 20...Voice recognition unit 21...Electronic lock 22...Storage unit

Claims (7)

An unlocking mechanism that unlocks a door that can be opened and closed;
a sensor that detects a visitor in front of the door;
an imaging unit that acquires an image of the visitor;
a shutter that opens and closes the imaging section;
a storage unit that stores authentication information;
a shutter drive unit that opens the shutter when the sensor detects a visitor;
an information processing unit that determines whether the visitor is a registrant authorized to unlock the door based on the authentication information;
The information processing unit further includes:
When the determination is successful, the visitor makes the unlocking mechanism operable;
When the determination fails, the image of the visitor captured by the imaging unit is stored in the storage unit , and the visitor is notified.
door lock device. The shutter is configured so that the visitor can visually confirm that the shutter is closed,
When the information processing unit fails in the determination, the information processing unit notifies the visitor by closing the shutter.
The door lock device according to claim 1. the shutter is colored;
The door lock device according to claim 2. When the determination fails, the information processing unit notifies the visitor by outputting audio, emitting light from a light emitting unit, or displaying an image.
The door lock device according to claim 1. The authentication information includes biometric information of a registrant who is permitted to unlock.
The door lock device according to any one of claims 1 to 4. The authentication information includes biometric information of a registrant who is prohibited from unlocking;
The information processing unit performs a process when the determination fails when the visitor is a registrant who is prohibited from unlocking the door.
The door lock device according to any one of claims 1 to 5. The authentication information includes biometric information of a registrant who is prohibited from unlocking;
When the information processing unit determines that the visitor is a registrant who is prohibited from unlocking, the information processing unit acquires an image of the visitor using the imaging unit and uses a means prepared for the registrant. give notice;
The door lock device according to any one of claims 1 to 5.

Images