Automatic door systems and programs for automatic door systems

Abstract

To secure security while improving convenience in an automatic door system using an electronic lock.SOLUTION: An automatic door system 100, configured to switch between an unlocked state where a door D is opened / closed according to the advance and retreat of a passer-by relative to a specified detection area and a locked state where the door D is maintained in a closed state, communicates with an authentication key K possessed by the passer-by to acquire an individual ID of the authentication key, switches from the locked state is switched to the unlocked state when the individual ID is authenticated, and switches from the unlocked state is switched to the locked state after a specified switching time has elapsed from the time point when it is detected that the passer-by has passed through the door D.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to an automatic door system and a program for the automatic door system. [Background technology]

[0002] BACKGROUND ART Conventionally, electronic locks have been known in which a lock installed in a dwelling unit is set in an electrically communicable state and unlocked or locked via an app downloaded to a mobile terminal, for example.

[0003] When residents of an apartment building use this electronic lock, they can lock and unlock their own room without taking out a key, but when they get to the automatic entrance door, they have to take out a key to unlock the door, which halves the benefit of using the electronic lock.

[0004] Therefore, there is a demand to use electronic locks for automatic doors in shared spaces such as entrances. One such automatic door system, as shown in Patent Document 1, is configured to communicate with a mobile terminal carried by a passerby, and when the passerby is authenticated, the automatic door switches from a locked state to an unlocked state, and when the passerby is detected by a human presence sensor, the automatic door opens.

[0005] In the above-described configuration, if the time for which the automatic door is kept unlocked (hereinafter referred to as the authentication validity time) is set to be short, for example in a communication environment where authentication is performed at a location relatively far from the automatic door, passersby will feel rushed to pass through the automatic door before the authentication validity time has elapsed, which will cause stress.

[0006] On the other hand, if the authentication validity period is set long, for example, people can pass through the automatic door even if they walk slowly, which improves convenience and reduces stress for passersby. However, on the other hand, it increases the possibility of unauthorized entry, known as tailgating, which reduces security.

[0007] As such, in conventional automatic door systems that use electronic locks on doors in shared spaces, there is a trade-off between security and convenience, and no system offers the benefits of both. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent No. 6218671 Summary of the Invention [Problem to be solved by the invention]

[0009] Therefore, the present invention has been made to solve all of the above-mentioned problems at once, and its objective is to ensure security while improving convenience in automatic door systems that use electronic locks. [Means for solving the problem]

[0010] The automatic door system of the present invention is an automatic door system that switches between an unlocked state, in which the door opens and closes, and a locked state, in which the door is kept closed, depending on the approach or retreat of a passerby through a specified detection area.It communicates with an authentication key carried by the passerby to obtain the individual ID of that authentication key, and when that individual ID is authenticated, the system switches from the locked state to the unlocked state.When it detects that a passerby has passed through the door, it switches from the unlocked state to the locked state after a specified switching time has elapsed from the time of detection.

[0011] With an automatic door system configured in this way, convenience can be improved by setting the time that the unlocked state is maintained after switching from a locked state to an unlocked state (the authentication validity time mentioned in the background art) to a longer time. Furthermore, when it is detected that a passerby has passed through the door, the door will switch from the unlocked state to the locked state after a switching time has elapsed since the time of detection. Therefore, by setting this switching time to a short time, it is possible to prevent unauthorized entry, known as tailgating, and security can also be ensured. As a result, in an automatic door system using an electronic lock, it is possible to improve convenience while also ensuring security.

[0012] It is preferable that the system is equipped with an unlocking control device that switches the system state between the unlocked state and the locked state and sets an authentication validity time, which is the time for which the unlocked state is maintained after switching from the locked state to the unlocked state, and that when it is detected that a passerby has passed through the door, the unlocking control device switches the system state from the unlocked state to the locked state after the switching time has elapsed, regardless of the authentication validity time. With this configuration, the unlocking control device switches the system state from unlocked to locked after the switching time has elapsed, regardless of the set authentication validity time, thereby reducing the occurrence of tailgating and ensuring security.

[0013] However, after the individual ID of the authentication key is authenticated and the system state switches from locked to unlocked, the person holding the authentication key does not necessarily pass through the door. In such a case, if the authentication validity period is too long, another person may be able to pass through the door. Therefore, it is preferable that the unlocking control device is configured to be able to change the authentication validity period. With this configuration, the authentication validity period can be set to an appropriate length depending on the location conditions where the system is installed, such as the amount of foot traffic, thereby improving the usability of the system.

[0014] When considering security, one tends to think that the shorter the switching time, the better, so that the door can be locked as quickly as possible after a passerby has passed through it. However, people walking behind a person passing through a door tend to assume that even if the door closes, it will open again if they arrive soon after. As a result, if the switching time is too short, there is a risk of a collision when trying to enter a locked door. Therefore, it is preferable that the switching time be changeable. With this configuration, the switching time can be set to be short to prioritize security, or it can be set to be slightly long in consideration of the above-mentioned risks, thereby achieving a balance between security and safety.

[0015] If the authentication validity time elapses before the switching time elapses from the time when it is detected that a passerby has passed through the door, it is preferable that the unlocking control device switches the system state from the unlocked state to the locked state after the authentication validity time has elapsed. With this configuration, if the authentication valid time elapses before the switching time elapses, the authentication valid time can be given priority over the switching time, thereby further improving security.

[0016] It is preferable that the device further includes a communication device that communicates with the authentication key to obtain the individual ID, and a passage detection sensor that detects when a passerby has passed through the door, and that the communication device and the passage detection sensor are connected in parallel to the unlocking control device. With this configuration, the degree of freedom in arranging the communication device and the passage detection sensor can be improved compared to a configuration in which the communication device, the passage detection sensor, and the unlocking control device are connected in series. This makes installation easier, and allows communication devices to be installed in optimal locations depending on the radio wave communication environment at the site and the desired communication range, ensuring a good radio wave environment. Furthermore, when it becomes necessary to replace the sensor or communication device due to a malfunction or the like, one can be removed without removing the other from the unlocking control device, which makes maintenance easy.

[0017] It is preferable that the door system further comprises a first sensor that detects the advancement or retreat of a passerby into or out of a first detection area set on either the front or rear side of the door, a second sensor that detects the advancement or retreat of a passerby into or out of a second detection area set on the other of the front or rear side of the door, and a passage detection sensor that is provided between the first sensor and the second sensor and that detects that a passerby has passed through the door. With this configuration, the passage detection sensor is provided at a position closer to the door opening than the first sensor and the second sensor, so that it can correctly detect that a passerby has passed through the door.

[0018] It is preferable that the first sensor and the second sensor, together with the passage detection sensor, are used to detect that a passerby has passed through the door. With this configuration, by using a plurality of sensors, it is possible to more accurately detect that a person has passed through the door.

[0019] The program for an automatic door system of the present invention is a program used in an automatic door system that switches between an unlocked state, in which the door opens and closes, and a locked state, in which the door is kept closed, depending on whether a passerby approaches or leaves a designated detection area.When the individual ID of the authentication key held by the passerby is authenticated, the state of the automatic door system is switched from the locked state to the unlocked state, and when it is detected that a passerby has passed through the door, it causes the computer to perform the function of an unlocking control unit that switches the state of the automatic door system from the unlocked state to the locked state after a designated switching time has elapsed from the time of detection. The automatic door system program configured in this manner can achieve the same effects as the automatic door system described above. [Effects of the Invention]

[0020] According to the present invention, in an automatic door system using an electronic lock, it is possible to improve convenience while ensuring security. [Brief explanation of the drawings]

[0021] [Figure 1] 2 is a schematic diagram illustrating the configuration of the automatic door system according to the embodiment; FIG. [Figure 2] 2 is a schematic diagram illustrating the configuration of the automatic door system according to the embodiment; FIG. [Figure 3] 2 is a schematic diagram illustrating the configuration of the automatic door system according to the embodiment; FIG. [Figure 4] FIG. 2 is a functional block diagram for explaining the functions of the automatic door system according to the embodiment. [Figure 5] 2 is a schematic diagram for explaining the configuration of the unlocking control device of the embodiment; FIG. [Figure 6] 4 is a flowchart illustrating the operation of the unlocking control device according to the embodiment. [Figure 7] 4 is a timing chart illustrating the operation of the unlocking control device of the embodiment. [Figure 8] 4 is a timing chart illustrating the operation of the unlocking control device of the embodiment. [Figure 9] 4 is a timing chart illustrating the operation of the unlocking control device of the embodiment. [Figure 10] FIG. 10 is a functional block diagram for implementing a passage detection sensor in another embodiment. [Figure 11] 10 is a flowchart illustrating the operation of an unlocking control device in another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0022] An automatic door system according to an embodiment of the present invention will be described with reference to the drawings.

[0023] [Automatic door system configuration] The automatic door system of this embodiment is used in, for example, apartment complexes and other housing complexes, commercial facilities such as shopping centers, or business facilities such as offices, and is applied to automatic doors installed in shared spaces shared by multiple people, such as the entrance to an apartment complex.

[0024] This automatic door system switches between an unlocked state, in which the door opens and closes, and a locked state, in which the door remains closed, depending on whether a person is approaching or leaving a designated detection area. Note that the term "door" here also refers to various fixtures such as shutters and gates.

[0025] This automatic door system utilizes an electronic lock and communicates with an authentication key held by a passerby to obtain the individual ID of that authentication key. When the individual ID is authenticated, the system switches from a locked state to an unlocked state.

[0026] Here, the unlocked state is a state in which the door opens when a passerby is detected entering the detection area, and the locked state is a state in which the door remains closed and does not open even if a passerby is detected entering the detection area.

[0027] More specifically, as shown in Figure 1, the automatic door system 100 includes a first sensor S1 provided on either the front or rear side of the door D, a second sensor S2 provided on the other side of the front or rear side of the door D, and a door drive device 10 that opens and closes the door D.

[0028] The first sensor S1 is provided, for example, above the door D, and an example thereof is an AIR (Active Infra Red) type detector that detects an object by receiving near-infrared rays emitted from a light-emitting element and reflected by the object with a light-receiving element. The first sensor S1 may be a radar sensor using microwaves or millimeter waves, or a camera sensor using an imaging element.

[0029] As shown in Figures 2 and 3, this first sensor S1 detects the approach and retreat of passersby to and from a first detection area X1 set on either the front or back side of the door D, and in this case, the first detection area X1 is set on the outside side of the door D.

[0030] The second sensor S2 is provided, for example, above the door D, and an example thereof is an AIR (Active Infra Red) type detector that detects an object by receiving near-infrared rays emitted from a light-emitting element and reflected by the object with a light-receiving element. The second sensor S2 may be a radar sensor using microwaves or millimeter waves, or a camera sensor using an imaging element.

[0031] As shown in Figures 2 and 3, this second sensor S2 detects the approach and retreat of passersby to a second detection area X2 set on either the front or back side of the door D, and in this case, the second detection area X2 is set inside the building rather than the door D.

[0032] It is not necessary that one of the first detection area X1 and the second detection area X2 be set indoors and the other outdoors. For example, in a commercial facility, if there is a door D that employees can pass through but customers are prohibited from passing through, and the automatic door system 100 is applied to that door D, both the first detection area X1 and the second detection area X2 will be set indoors. Of course, depending on the application situation, both the first detection area X1 and the second detection area X2 may be set outdoors.

[0033] As shown in FIG. 1, the door drive device 10 has a drive source 11 such as a motor and a control unit main body 12 that controls the drive source 11. When the system is in an unlocked state, if the first sensor S1 detects that a passerby has entered the first detection area X1, or if the second sensor S2 detects that a passerby has entered the second detection area X2, the control unit main body 12 controls the drive source 11 to open the door D.

[0034] After the door D is opened, the control unit main body 12 of the door driving device 10 controls the driving source 11 to close the open door D, for example, after a predetermined time has elapsed.

[0035] In this configuration, in order to prevent pinching, an auxiliary sensor S3 is provided between the first sensor S1 and the second sensor S2, as shown in FIG.

[0036] This auxiliary sensor S3 is provided on one or both of a pair of opposing wall surfaces W that form the opening O together with the door D, and an example of such a sensor is an opposing blocking type or retroreflective type photoelectric sensor.

[0037] As shown in FIG. 3, the auxiliary sensor S3 of this embodiment is interposed between the first detection area X1 and the second detection area X2 and detects the approach and retreat of passersby to and from the non-detection area X3 of the first sensor S1 and the second sensor S2. However, the detection area X3 of the auxiliary sensor S3 does not necessarily have to be the non-detection area X3 described above, and for example, a part of the first area or a part of the second area may overlap with the detection area X3 of the auxiliary sensor S3.

[0038] Here, the automatic door system 100 of this embodiment utilizes an electronic lock as described above, and specifically, as shown in Figure 4, further comprises a communication device 20 that communicates with the authentication key K held by passersby, and an unlocking control device 30 that controls the state of the system.

[0039] The communication device 20 wirelessly communicates with an authentication key K, which serves as a key for switching the system state from a locked state to an unlocked state. The authentication key K may be, for example, a mobile terminal (specifically, an application downloaded to the mobile terminal) or an IC card.

[0040] This communication device 20 is placed, for example, near the door D and is connected by wire to the unlocking control device 30 described later, and functionally, as shown in Figure 4, it at least functions as an ID acquisition unit 21.

[0041] The ID acquisition unit 21 acquires an individual ID, which is a unique ID, from the communicable authentication key K, and is configured to output the acquired individual ID to the unlocking control device 30.

[0042] The unlocking control device 30 switches the system state between an unlocked state and a locked state, and specifically, when the individual ID acquired by the communication device 20 described above is authenticated, the system is switched from a locked state to an unlocked state.

[0043] This unlocking control device 30 physically comprises a CPU, memory, etc., and functionally functions as a registered ID storage unit 31, ID authentication unit 32, and unlocking control unit 33, as shown in Figure 4, by the CPU and its peripheral devices working together in accordance with the automatic door system program stored in the memory.

[0044] The registered ID storage unit 31 is set in a predetermined area of ​​the memory, and stores pre-registered individual IDs as registered IDs.

[0045] The ID authentication unit 32 verifies the validity of the individual ID acquired by the communication device 20, and checks whether any registered ID matches the acquired individual ID. If a matching registered ID is found, the acquired individual ID is authenticated, and if a matching registered ID is not found, the acquired individual ID is determined to be unauthenticated.

[0046] The unlocking control unit 33 switches the state of the system from a locked state to an unlocked state when the individual ID is authenticated by the ID authentication unit 32. Specifically, the unlocking control unit 33 controls the door driving device 10 to lock the system by disabling the signals output by the first sensor S1 and the second sensor S2 when they detect an object, and conversely, to unlock the system by enabling the signals. Note that the unlocking control unit 33 may also lock the system by stopping the output of signals from the first sensor S1 and the second sensor S2, and unlock the system by outputting the signals.

[0047] The automatic door system 100 of this embodiment is equipped with a status notification means 40 (see Figure 1) that notifies the user in a distinguishable manner whether the system is in an unlocked state or a locked state. Specific examples of the status notification means 40 include using light or sound to notify the user of the system's status, such as by changing the lighting state or display content of a lamp or display located near the door D depending on whether the door is in the unlocked state or the locked state.

[0048] When the system is switched from a locked state to an unlocked state by the unlocking control unit 33, if the first sensor S1 described above detects that a passerby has entered the first detection area X1, or if the second sensor S2 described above detects that a passerby has entered the second detection area X2, the door D is opened by the door driving device 10.

[0049] On the other hand, when the system is switched from the unlocked state to the locked state by the unlocking control unit 33, even if the above-mentioned first sensor S1 detects that a passerby has entered the first detection area X1, or even if the above-mentioned second sensor S2 detects that a passerby has entered the second detection area X2, the door D will not be opened and will remain closed.

[0050] Here, after the system has switched from the locked state to the unlocked state, the unlock control unit 33 must again return the system from the unlocked state to the locked state at some point.

[0051] Therefore, as shown in FIG. 4, the unlocking control device 30 of this embodiment is configured to preset an authentication validity period, which is the period for which the unlocked state is maintained after switching from the locked state to the unlocked state.

[0052] The unlocking control device 30 here is configured to be able to change the authentication validity period, and specifically, as shown in Figure 5, it is equipped with a first setting means D1 such as a DIP switch for setting and changing the authentication validity period.

[0053] With this configuration, by operating the first setting means D1, it is possible to selectively set one of a plurality of authentication validity periods. However, the unlocking control device 30 may be configured so that the authentication validity period can be set to any length.

[0054] Therefore, the automatic door system 100 of this embodiment is configured so that after switching from a locked state to an unlocked state, if it detects that a passerby has passed through door D, it will switch from the unlocked state to the locked state after a predetermined switching time has elapsed from the time of detection.

[0055] More specifically, as shown in Figure 4, the automatic door system 100 further includes a passage detection sensor S4 for detecting when a person passes through door D, and the unlocking control device 30 is configured so that the above-mentioned switching time is preset.

[0056] The passage detection sensor S4 is connected by wiring to the unlocking control device 30, and here, the passage detection sensor S4 and the communication device 20 are connected in parallel to the unlocking control device 30. Note that the passage detection sensor S4, the communication device 20, and the unlocking control device 30 may also be connected in series.

[0057] In this embodiment, at least the auxiliary sensor S3 described above is used as the passage detection sensor S4; in other words, the auxiliary sensor S3 here is used to prevent pinching and also to detect that a passerby has passed through the door D.

[0058] In this context, "detecting that a passerby has passed through door D" not only means detecting that the entire body of a passerby has completely passed through door D, but also includes the concept of detecting that part of the passerby's body has passed through door D, or detecting that a passerby has begun to pass through door D.

[0059] Since the auxiliary sensor S3 is used as the passage detection sensor S4 in this way, after the system state switches from the locked state to the unlocked state, when the auxiliary sensor S3 detects a passerby entering the detection area X3 (here, the non-detection area X3 for the first sensor S1 and the second sensor S2), this is detected as the passerby having passed through the door D.

[0060] Then, when the passage detection sensor S4 detects that a passerby has passed through door D, the unlocking control unit 33 described above switches the system state from the unlocked state to the locked state after the switching time has elapsed from the time of detection, regardless of the authentication validity time.

[0061] Here, the unlocking control device 30 of this embodiment is configured to be able to change the switching time, and specifically, as shown in Figure 5, it is equipped with a second setting means D2 such as a DIP switch for setting and changing the switching time.

[0062] With this configuration, by operating the second setting means D2, it is possible to selectively set one of a plurality of switching times. However, the unlocking control device 30 may be configured so that the switching time can be set to any length.

[0063] [Automatic door system operation] Next, the operation of the automatic door system 100 when the individual ID acquired by the communication device 20 is authenticated will be described with reference to FIGS.

[0064] First, when the communication device 20 authenticates the acquired individual ID (A1), the unlocking control device 30 switches the system state from the locked state to the unlocked state (A2).

[0065] Next, the unlocking control device 30 monitors whether or not the auxiliary sensor S3 serving as the passage detection sensor S4 has detected that a passerby has passed through the door D (A3).

[0066] If it is not detected at A3 that a passerby has passed through door D, the unlocking control device 30 determines whether the authentication valid time has elapsed (A4) and continues to monitor A3 until the authentication valid time has elapsed, and if the authentication valid time has elapsed, switches the system state from the unlocked state to the locked state (A5).

[0067] At A3, when it is detected that a passerby has passed through door D, the unlocking control device 30 determines whether the predetermined switching time has elapsed from the time of detection, in order to switch the system state from the unlocked state to the locked state after the predetermined switching time has elapsed (A6).

[0068] In A6, when the switching time has elapsed, the unlocking control device 30 switches the system state from the unlocked state to the locked state (A5) regardless of the authentication validity time, as shown in Figures 7 and 8. Note that Figure 7 shows the case where the switching time is set to 0 seconds, and Figure 8 shows the case where the switching time is set to 5 seconds.

[0069] On the other hand, if the switching time has not elapsed at A6, the unlocking control device 30 of this embodiment determines whether the authentication valid time has elapsed as shown in FIG. 6 (A7).

[0070] Then, at A7, when the authentication valid time has elapsed, the unlocking control device 30 switches the system state from the unlocked state to the locked state (A5) regardless of the switching time, as shown in Fig. 9. Note that Fig. 9 shows the case where the switching time is set to 5 seconds.

[0071] In other words, the unlocking control device 30 of this embodiment is configured to switch the system state from the unlocked state to the locked state after the authentication validity time has elapsed if the authentication validity time has elapsed before the switching time has elapsed from the time when it is detected that a passerby has passed through door D.

[0072] On the other hand, if the authentication valid time has not elapsed in A7, the unlocking control device 30 returns to the determination in A6 and repeats the determinations in A6 and A7 until either the switching time or the authentication valid time has elapsed.

[0073] [Effects of this embodiment] With the automatic door system 100 configured in this way, convenience can be improved by setting the authentication validity period to a longer period. Furthermore, when it is detected that a passerby has passed through door D, the unlocked state will be switched to the locked state after the switching period from the time of detection. Therefore, by setting this switching period to a shorter period, it is possible to prevent the entry of unauthorized persons, known as tailgating, and security can also be ensured. As a result, in the automatic door system 100 using an electronic lock, it is possible to improve convenience while also ensuring security.

[0074] However, after the individual ID of the authentication key K is authenticated and the system state is switched from locked to unlocked, the person holding the authentication key K does not necessarily pass through door D. In such a case, if the authentication validity period is too long, another person may be able to pass through door D, which is a problem. To address this issue, the unlocking control device 30 of this embodiment is configured to allow the authentication validity period to be changed, so that the authentication validity period can be set to an appropriate length depending on the location conditions where the system is installed, such as the amount of foot traffic, thereby improving the usability of the system.

[0075] When considering security, one might think that the shorter the switching time, the better, so that the door should be locked as quickly as possible after a passerby has passed through door D. However, the psychology of a person walking behind a pedestrian at Door D is that even if Door D closes, they will think that Door D will open again if they arrive soon. As a result, if the switching time is too short, there is a risk of a collision when they try to enter Door D, which is locked. To address this issue, the unlocking control device 30 of this embodiment is configured to allow the switching time to be changed, so that the switching time can be set to a shorter time to prioritize security, or the switching time can be set to a slightly longer time in consideration of the above-mentioned risks, thereby achieving a balance between security and safety.

[0076] If the authentication validity time elapses before the switching time elapses from the time when a passerby is detected passing through door D, the unlocking control device 30 of this embodiment prioritizes the authentication validity time over the switching time and switches the system state from the unlocked state to the locked state after the authentication validity time has elapsed, thereby further improving security.

[0077] Since the communication device 20 and the passage detection sensor S4 are connected in parallel to the unlocking control device 30, the freedom of placement of the communication device 20 and the passage detection sensor S4 can be improved compared to a configuration in which the communication device 20, the passage detection sensor S4, and the unlocking control device 30 are connected in series. This allows for easy installation, and the communication device 20 can be installed in the most optimal position depending on the radio wave communication environment at the site and the desired communication range, thereby ensuring a good radio wave environment. Furthermore, when it becomes necessary to replace the sensor or communication device 20 due to a malfunction or the like, one can be removed without removing the other from the unlocking control device 30, which improves maintainability.

[0078] Since the auxiliary sensor S3, which is closer to the opening O of the door D than the first sensor S1 and the second sensor S2, is used as the passage detection sensor, it is possible to correctly detect that a pedestrian has passed through the door D. Furthermore, there is no need to provide a dedicated sensor or the like to detect when a person has passed through door D, which reduces the manufacturing costs of the system.

[0079] Furthermore, the automatic door system 100 of this embodiment is equipped with a status notification means 40 that identifiably notifies whether the system is in an unlocked state or a locked state. By notifying that the door is in an unlocked state, passersby can pass through the door D safely, and by notifying that the door is in a locked state, it can act as a deterrent against tailgating.

[0080] [Other embodiments] The present invention is not limited to the above-described embodiment.

[0081] For example, in the above embodiment, only the auxiliary sensor S3 is used as the passage detection sensor S4, but as shown in FIG. 10, the first sensor S1, the second sensor S2, and the auxiliary sensor S3 may be used as the passage detection sensor S4. In this case, an example of an embodiment of the unlocking control device 30 is one in which, when all of the multiple passage detection sensors S4, namely the first sensor S1, the second sensor S2, and the auxiliary sensor S3, detect a pedestrian entering their respective detection areas, the system state is switched from the unlocked state to the locked state after a switching time has elapsed from the time the pedestrian was last detected.

[0082] Furthermore, at least one of the first sensor S1, the second sensor S2, and the auxiliary sensor S3 may be used as the passage detection sensor S4. Specifically, if it is sufficient to detect that a passerby has passed through the door D from the first area side, the second sensor S2 or the auxiliary sensor S3 may be used, and if it is sufficient to detect that a passerby has passed through the door D from the second area side, the first sensor S1 or the auxiliary sensor S3 may be used.

[0083] Furthermore, the passage detection sensor S4 is not necessarily limited to one that detects the entrance of a passerby into the detection area X3, but may be, for example, an imaging means that images the vicinity of the entrance O or the door D.

[0084] In the above embodiment, the authentication validity period and the switching period are changeable. However, one or both of the authentication validity period and the switching period may be set to a predetermined length and cannot be changed.

[0085] In the above embodiment, as shown in A7 of Fig. 6, if the authentication valid time has elapsed from the time when it is detected that a passerby has passed through the door before the switching time has elapsed, the system state is switched from the unlocked state to the locked state, in other words, the authentication valid time has priority over the switching time, but the step A7 may not be provided and the switching time may have priority over the authentication valid time as shown in Fig. 11. In other words, the unlocking control device 30 may be configured to repeat the determination of A6 in determining whether the switching time has elapsed until the switching time has elapsed. Furthermore, the automatic door system 100 may have a switching means for switching between the operation shown in FIG. 6 and the operation shown in FIG. 11, that is, for switching which of the authentication validity time and the switching time is given priority.

[0086] In the above embodiment, the unlocking control device 30 is provided with the functions of the registered ID storage unit 31 and the ID authentication unit 32, but both or one of these functions may be provided in the communication device 20, or may be provided in another computer, such as a cloud server computer. In particular, by storing the registered ID storage unit 31 on a separate server, such as a cloud server, from the unlocking control device 30, when adding the individual ID of a new resident to the registered ID storage unit 31 or deleting the individual ID of a departing resident from the registered ID storage unit 31, there is no need to go to the site where the unlocking control device 30 and communication device 20 are installed, and access to the registered ID storage unit 31 is easy.

[0087] Furthermore, the unlocking control unit 33 in the above embodiment switches the system state from the unlocked state to the locked state by disabling the output from the first sensor S1 and the second sensor S2 or by stopping the output of the signal, but it is not necessarily necessary to switch by signal processing. For example, a physical hook or the like may be provided on the door D, and the system state may be switched from the unlocked state to the locked state by operating this hook or the like.

[0088] Furthermore, in the above embodiment, the automatic door system 100 according to the present invention has been described as being applied to a horizontal sliding door, but it may also be applied to other doors, such as a front-to-back swing door, a rotating door, or a vertical lift door.

[0089] Furthermore, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications are possible without departing from the spirit of the invention. [Explanation of symbols]

[0090] 100 Automatic Door System K Authentication Key S1: First sensor S2: Second sensor S3: Auxiliary sensor S4 Passage detection sensor 10 Door drive unit 20. Communication equipment 30 Unlocking control device

Claims

1. An automatic door system that switches between an unlocked state in which the door opens and closes depending on the movement of pedestrians through a predetermined detection area, and a locked state in which the door is kept closed, This automatic door system communicates with an authentication key held by a passerby to acquire the individual ID of the authentication key, and when the individual ID is authenticated, switches from the locked state to the unlocked state, and when it detects that a passerby has passed through the door, switches from the unlocked state to the locked state after a predetermined switching time has elapsed from the time of detection.

2. an unlocking control device that switches the state of the system between the unlocked state and the locked state, and that sets an authentication validity time that is a time for which the unlocked state is maintained after switching from the locked state to the unlocked state; The automatic door system of claim 1, characterized in that when a passerby is detected passing through the door, the unlocking control device switches the system state from the unlocked state to the locked state after the switching time has elapsed, regardless of the authentication validity time.

3. 3. The automatic door system according to claim 2, wherein the unlocking control device is configured to be able to change the authentication validity period.

4. 4. The automatic door system according to claim 1, wherein the switching time is changeable.

5. The automatic door system of claim 2 or 3, characterized in that if the authentication validity period elapses before the switching time elapses from the time a passerby is detected passing through the door, the unlocking control device switches the system state from the unlocked state to the locked state after the authentication validity period has elapsed.

6. a communication device that communicates with the authentication key to acquire the individual ID; a passage detection sensor for detecting that a person has passed through the door; 6. The automatic door system according to claim 2, 3 or 5, wherein the communication device and the passage detection sensor are connected in parallel to the unlocking control device.

7. a first sensor that detects the approach or retreat of a passerby to or from a first detection area set on one of the front side and the back side of the door; a second sensor that detects the approach or retreat of a passerby to a second detection area set on the other of the front side and the back side of the door; The automatic door system of any one of claims 1 to 5 further comprises a passage detection sensor disposed between the first sensor and the second sensor for detecting when a person passes through the door.

8. 8. The automatic door system according to claim 7, wherein the first sensor and the second sensor are used together with the passage detection sensor to detect that a person has passed through the door.

9. A program used in an automatic door system that switches between an unlocked state in which the door opens and closes depending on the movement of people entering and leaving a predetermined detection area, and a locked state in which the door is kept closed, This program is designed to cause a computer to function as an unlocking control unit, which switches the state of the automatic door system from the locked state to the unlocked state when the individual ID of the authentication key held by a passerby is authenticated, and when it detects that a passerby has passed through the door, switches the state of the automatic door system from the unlocked state to the locked state after a predetermined switching time has elapsed from the time of detection.

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