Key control system, key control method and computer program

Abstract

To provide a technique of enhancing certainty that an electric lock can be unlocked only by a person who is permitted to unlock the electric lock.SOLUTION: A control unit 20 detects an operation input in an operation input unit 34 of a reader unit 30. The control unit 20 transmits unlock trigger information for unlocking an electric lock (for example, an electric thumb-turn 40) to a preregistered user device (for example, a user device 60) permitted to unlock the electric lock (for example, the electric thumb-turn 40), in response to the operation input in the operation input unit 34 of the reader unit 30.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to data processing technology, and in particular to a key control system, a key control method, and a computer program. [Background technology]

[0002] The following Patent Document 1 describes an electric lock control system that determines whether a person is authorized to unlock the electric lock based on information about the movement of a person around the electric lock, and unlocks the electric lock based on the determination result. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-111976 A Summary of the Invention [Problem to be solved by the invention]

[0004] It is desirable to increase the reliability that only a person authorized to unlock an electric lock can unlock the electric lock. One object of the present disclosure is to provide a technology that increases the reliability that only a person authorized to unlock the electric lock can unlock the electric lock. [Means for solving the problem]

[0005] In order to solve the above problems, a key control system of one embodiment of the present disclosure includes an operation input unit, a communication unit that communicates with an external device, a control unit that instructs the unlocking of the electric lock, a memory unit that stores information about a device of a user who is authorized to unlock the electric lock, and a transmission unit that transmits unlocking trigger information for unlocking the electric lock to the user's device in accordance with an operation input to the operation input unit.

[0006] Another aspect of the present invention is a key control method, in which a computer having a storage unit that stores information about a device of a user permitted to unlock an electric lock detects an operation input to an operation input unit, and transmits unlocking trigger information for unlocking the electric lock to the device of the user in response to the operation input to the operation input unit.

[0007] In addition, any combination of the above components, and any conversion of the expressions of the present disclosure between an apparatus, a computer program, a recording medium having a computer program recorded thereon, an opening / closing part equipped with a key control system, etc. are also valid aspects of the present disclosure. Effect of the Invention

[0008] According to the technology disclosed herein, it is possible to increase the certainty that only persons authorized to unlock an electric lock can unlock the electric lock. [Brief description of the drawings]

[0009] [Figure 1] 1 is a block diagram showing functional blocks of a key control system according to an embodiment; [Diagram 2] 2(a) and 2(b) are schematic diagrams showing the external appearance of the reader unit. [Diagram 3] FIG. 11 is a diagram showing an example of unlocking trigger information. [Figure 4] 4 is a flowchart showing the operation of the key control system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The subject of the device or method in this disclosure includes a computer. The computer executes a program to realize the function of the subject of the device or method in this disclosure. The computer includes a processor that operates according to a program as a main hardware configuration. The type of processor is not important as long as it can realize the function by executing the program. The processor is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration). Although it is called an IC or an LSI here, the name changes depending on the degree of integration, and it may be called a system LSI, a VLSI (Very Large Scale Integration), or an ULSI (Ultra Large Scale Integration). A Field Programmable Gate Array (FPGA), which is programmed after the LSI is manufactured, or a reconfigurable logic device that can reconfigure the connection relationship inside the LSI or set up the circuit partition inside the LSI, can also be used for the same purpose. Multiple electronic circuits may be integrated into one chip or provided on multiple chips. The multiple chips may be integrated in one device, or may be provided in multiple devices. The program may be recorded in a non-transitory recording medium such as a computer-readable Read Only Memory (ROM), an optical disk, or a hard disk drive, or may be recorded in a temporary storage medium such as a computer-readable Random Access Memory (RAM). The program may be stored in the recording medium in advance, or may be supplied to the recording medium or storage medium via a wide area communication network including the Internet.

[0011] In the key control system of the embodiment, numbers are not displayed on the operation input unit provided at the opening and closing part of the house (the door in the embodiment), and information on the position where the user should operate on the operation input unit (unlocking trigger information described below) is displayed on a device (e.g., a smartphone) of a user who is permitted to unlock the electric lock. This allows users who are permitted to unlock the electric lock to unlock the electronic lock, while preventing people other than the users who are permitted to unlock the electric lock from unlocking the electronic lock.

[0012] 1 is a block diagram showing the functional blocks of a key control system 16 according to an embodiment. Each block shown in the block diagram of the present disclosure can be realized in terms of hardware by elements and mechanical devices such as a computer's CPU and memory, and in terms of software by a computer program, etc., but the functional blocks shown here are realized by cooperation between them. Those skilled in the art will understand that these functional blocks can be realized in various ways by combinations of hardware and software.

[0013] The key control system 16 is a data processing system provided in the door 12 of the house 10. The key control system 16 includes a control unit 20, a reader unit 30, an electric thumb turn 40, a handle 50, and a secret switch 62.

[0014] The handle 50 is a handle of the door 12, and is typically a push-pull handle. The handle 50 includes a sensor 52. The sensor 52 detects when the handle 50 is pulled out from its initial position by a user or the like. When the sensor 52 detects that the handle 50 has been pulled out, it transmits a signal indicating this to the control unit 20.

[0015] The electric thumbturn 40 is an electronic lock that locks and unlocks the door 12. The electric thumbturn 40 switches between a locked state and an unlocked state in response to an instruction (signal) from the control unit 20. When entering the house 10 from outside, the user can open the door 12 by setting the electric thumbturn 40 to the unlocked state and then pulling the handle 50.

[0016] The reader unit 30 is a device that is installed on the outdoor side of the door 12 and accepts user operations. The reader unit 30 includes a communication unit 31, a storage unit 32, and an operation input unit 34. The communication unit 31 communicates with an external device (typically a user device 60) that is located near the door 12 using short-range wireless communication. In the embodiment, the communication unit 31 communicates with the external device using Bluetooth Low Energy (trademark or registered trademark) (hereinafter also referred to as "BLE").

[0017] The user device 60 is an electronic device held by a user who is about to open the door 12 and enter the house 10. The user device 60 has a short-range wireless communication function (BLE communication function in the embodiment). The user device 60 may be, for example, a smartphone, a tablet terminal, a remote control key, or a card (for example, a contactless IC card).

[0018] The storage unit 32 stores information about a device (user device 60 in this embodiment) owned by a user who is permitted to unlock the electric thumb turn 40 and has been preregistered in the key control system 16 (e.g., the reader unit 30). The information stored in the storage unit 32 can also be considered as information about a device to which unlocking trigger information, which will be described later, is sent. The information stored in the storage unit 32 may include information necessary for communication with the user device 60, and may include, for example, the MAC address of the user device 60.

[0019] The operation input unit 34 is a member into which a user operation is input. The operation input unit 34 includes a start switch 36 and a numeric keypad unit 38. The start switch 36 is a switch that provides a trigger to start communication between the reader unit 30 and the user device 60. The start switch 36 may be a button.

[0020] The numeric keypad section 38 includes a plurality of numeric keypad switches (specifically, electrostatic switches). In the embodiment, the plurality of numeric keypad switches are used to input unlocking trigger information for the electric thumb turn 40. The unlocking trigger information can also be considered as a code or a secret number for unlocking the electric thumb turn 40. The unlocking trigger information in the embodiment is information indicating a combination of a plurality of numeric keypad switches to be pressed (in other words, to be selected). In other words, the unlocking trigger information is information indicating a combination of a plurality of positions to be pressed on the numeric keypad section 38.

[0021] 2(a) and 2(b) are schematic diagrams showing the appearance of the reader unit 30. FIG. 2(a) shows the appearance of a numeric keypad unit 38 of an embodiment. The numeric keypad unit 38 of the embodiment does not display numbers, but includes a plurality of dots. Each dot indicates a candidate position for inputting unlocking trigger information. FIG. 2(b) shows the appearance of a modified numeric keypad unit 38. The modified numeric keypad unit 38 displays ten numbers from 0 to 9. Each number indicates a candidate position for inputting unlocking trigger information.

[0022] Returning to FIG. 1, the secret switch 62 is an operation input unit that is installed outside the house 10 and is different from the reader unit 30. When the operation input unit 34 of the reader unit 30 is called the first operation input unit, the secret switch 62 can be said to be the second operation input unit. The secret switch 62 of the embodiment has a function of a PIN input device and is provided with a button for inputting a PIN. The reader unit 30, the electric thumb turn 40, the sensor 52 of the handle 50, and the secret switch 62 in FIG. 1 are connected to the control unit 20 and transmit and receive signals between them.

[0023] The control unit 20 executes various data processing related to unlocking the electric thumb turn 40. The control unit 20 includes a function of detecting an operation input to the operation input unit 34 of the reader unit 30, and transmitting unlocking trigger information for unlocking the electric thumb turn 40 to the user device 60 in response to the operation. The control unit 20 may be realized by a computer (e.g., a microcontroller) equipped with a CPU, memory, etc.

[0024] The control unit 20 includes a reader control unit 22, an unlock instruction unit 26, and a switch control unit 28. The functions of these multiple functional blocks may be implemented in a computer program (hereinafter also referred to as a "key control program"). The key control program may be stored in a recording medium, or may be installed in the storage of a computer constituting the key control system 16 via the recording medium. The CPU of the computer constituting the key control system 16 may fulfill the functions of the multiple functional blocks by reading the key control program into a main memory and executing it.

[0025] The reader control unit 22 controls the operation of the reader unit 30. The reader control unit 22 includes an unlocking trigger generating unit 23 and an unlocking trigger transmitting unit 24.

[0026] The unlocking trigger generating unit 23 generates unlocking trigger information when the start switch 36 of the reader unit 30 is pressed. The unlocking trigger generating unit 23 generates unlocking trigger information with different contents each time it generates unlocking trigger information. In the embodiment, the unlocking trigger generating unit 23 generates unlocking trigger information indicating a different combination of numeric keypad switches to be pressed each time it generates unlocking trigger information. The unlocking trigger generating unit 23 may use the current date and time, etc. as a seed value to generate the unlocking trigger information as a one-time password.

[0027] The unlocking trigger transmission unit 24 transmits the unlocking trigger information generated by the reader control unit 22 to the reader unit 30, and causes the communication unit 31 of the reader unit 30 to transmit the unlocking trigger information to the user device 60. The unlocking trigger transmission unit 24 transmits different unlocking trigger information each time it transmits the unlocking trigger information to the user device 60 via the reader unit 30.

[0028] FIG. 3 shows an example of the unlocking trigger information. The unlocking trigger information 70 includes an image and text displayed on the display unit of the user device 60. The unlocking trigger information 70 includes information on the position at which the user should operate the operation input unit 34 of the reader unit 30. In the embodiment, the unlocking trigger information 70 further includes information on the operable positions at the operation input unit 34 of the reader unit 30. In the unlocking trigger information 70 of FIG. 3, the positions of the ten numeric keypad switches provided on the numeric keypad unit 38 are shown as the operable positions. In addition, in the unlocking trigger information 70 of FIG. 3, a circular object is placed at the position of a specific numeric keypad switch that the user should operate.

[0029] As a modified example, the unlocking trigger information may include text explaining the position of a specific numeric keypad switch that the user should operate. For example, the unlocking trigger information indicating the operation positions in FIG. 3 may include text indicating "push the first row from the top of the left column," "push the fourth row from the top of the left column," "push the third row from the top of the right column," and "push the fifth row from the top of the right column." In addition, when numbers are displayed on each numeric keypad switch of the reader unit 30, the unlocking trigger information may indicate a combination of numbers (e.g., "1670") of one or more numeric keypad switches that the user should operate.

[0030] 1, the unlock instruction unit 26 instructs the electric thumb turn 40 to be unlocked when an operation matching the unlock trigger information is input to the reader unit 30. The unlock instruction unit 26 also instructs the electric thumb turn 40 to be unlocked when input of an operation to the secret switch 62 is set to be valid and a predetermined operation is input to the secret switch 62 (for example, when a predetermined PIN number is input).

[0031] The switch control unit 28 controls the state of the secret switch 62. When the reader unit 30 detects an abnormality in communication with the user device 60 and further detects a predetermined user action, the switch control unit 28 validates the input of an operation to the secret switch 62. In other words, on the condition that an abnormality in communication with the user device 60 is detected and further a predetermined user action is detected, the switch control unit 28 switches the state of the secret switch 62 to a state in which a PIN input is accepted as valid.

[0032] The operation of the key control system 16 configured as above will now be described. 4 is a flowchart showing the operation of the key control system 16. As a preliminary step, information on a device of a user (user device 60) permitted to unlock the power thumb turn 40 is registered in advance in the reader unit 30. For example, the user may register information on the user device 60 (MAC address, etc.) in the memory unit 32 of the reader unit 30 by performing BLE pairing.

[0033] A user who wishes to enter the house 10 presses the activation switch 36 of the reader unit 30. The reader unit 30 transmits a signal indicating that the activation switch 36 has been pressed to the control unit 20. The reader control unit 22 of the control unit 20 detects that the activation switch 36 of the reader unit 30 has been pressed based on the signal transmitted from the reader unit 30 (Y in S10). In response to the pressing of the activation switch 36 of the reader unit 30, the reader control unit 22 transmits a signal to the reader unit 30 instructing it to establish a BLE connection with the user device 60.

[0034] In response to an instruction from the control unit 20, the communication unit 31 of the reader unit 30 attempts to establish a BLE connection with the user device 60 using the information of the user device 60 stored in the storage unit 32 (S11). The reader unit 30 transmits to the control unit 20 a signal indicating that the BLE connection with the user device 60 has been successfully established, or a signal indicating that an abnormality has occurred in the BLE connection with the user device 60. Based on the signal from the reader unit 30, the control unit 20 recognizes whether the BLE connection between the reader unit 30 and the user device 60 is normal or not.

[0035] When a normal BLE connection with the user device 60 is established (N in S12), the unlocking trigger generating unit 23 of the control unit 20 generates new unlocking trigger information different from the unlocking trigger information generated up until that point (S13). The unlocking trigger transmitting unit 24 of the control unit 20 transmits the unlocking trigger information generated in S13 to the reader unit 30, and instructs the reader unit 30 to transfer the unlocking trigger information to the user device 60. The communication unit 31 of the reader unit 30 transfers the unlocking trigger information transmitted from the control unit 20 to the user device 60 (S14).

[0036] The user device 60 displays the unlocking trigger information transmitted from the reader unit 30 on the display. The user presses one or more numeric keypad switches provided on the numeric keypad unit 38 of the reader unit 30 in accordance with the unlocking trigger information. The reader unit 30 transmits operation information indicating the pressed numeric keypad switch (the numeric keypad switch on which the operation was input) to the control unit 20.

[0037] The control unit 20 judges whether the combination of numeric keypad switches to be pressed, which is indicated by the unlocking trigger information, matches the combination of numeric keypad switches pressed, which is indicated by the operation information, and if they match, judges that the correct unlocking operation has been input to the reader unit 30. If it is judged that the correct unlocking operation has been input (Y in S15), the unlocking instruction unit 26 of the control unit 20 transmits a signal (unlocking instruction signal) to the electric thumb turn 40 to instruct switching from the locked state to the unlocked state. When the electric thumb turn 40 receives the unlocking instruction signal, it switches from the locked state to the unlocked state (S16). If it is not judged that the correct unlocking operation has been input (N in S15), the process of S16 is skipped and the process of this figure is terminated. That is, the locked state of the electric thumb turn 40 is maintained.

[0038] According to the embodiment of the key control system 16, unlocking trigger information is provided to a device (user device 60) of a user authorized to unlock the electric thumbturn 40, thereby preventing unauthorized unlocking and improving the safety of the house 10. The unlocking trigger information has different content each time unlocking is requested, so that unauthorized unlocking by a person not authorized to unlock the electric thumbturn 40 can be more reliably prevented, and the safety of the house 10 can be further improved.

[0039] When an abnormality occurs in the BLE connection with the user device 60 (Y in S12), the switch control unit 28 of the control unit 20 transitions to a state of waiting for detection of a predetermined operation that will be a trigger to activate the secret switch 62. In the embodiment, the predetermined operation is a plurality of types of operations, specifically, two operations: a first operation of pulling out the handle 50 of the door 12 and a second operation of pressing the button of the secret switch 62.

[0040] The sensor 52 of the handle 50 of the door 12 detects when the handle 50 is pulled out, and transmits a signal indicating that the handle 50 has been pulled out to the control unit 20. The switch control unit 28 of the control unit 20 detects that the first action has been performed by receiving this signal. In addition, the secret switch 62 detects when the button on the housing is pressed, and transmits a signal indicating that the button has been pressed to the control unit 20. The switch control unit 28 of the control unit 20 detects that the second action has been performed by receiving this signal.

[0041] When the switch control unit 28 of the control unit 20 detects that the first operation and the second operation have been performed within a predetermined time after detecting that an abnormality has occurred in the BLE connection between the reader unit 30 and the user device 60 (Y in S17), it transmits a signal to the secret switch 62 to switch the input of a PIN to a valid state. The secret switch 62 that has received this signal transitions to a state in which it can accept a PIN and transmits the input numerical combination (PIN) to the control unit 20 (S18).

[0042] The time to wait for detection of the first and second actions (the above-mentioned predetermined time) may be set to an appropriate value based on the knowledge of the developer of the key control system 16 and experiments using the key control system 16. For example, the above-mentioned predetermined time may be a value of about 30 seconds to 1 minute.

[0043] Moreover, the first and second actions are not limited to the above actions. As a modified example, the first or second action may be a second operation on the operation input unit 34 of the reader unit 30 (the first operation is pushing the start switch 36). As another modified example, the first or second action may be a user making a predetermined gesture on a camera (not shown). That is, the condition may include that a predetermined gesture has been detected based on a camera image. Furthermore, in the embodiment, the condition is that the first and second actions are performed, but as a modified example, the condition may be that one action (for example, either the first or second action) is performed. Or, the condition may be that three or more types of actions are performed.

[0044] If a user permitted to unlock the electric thumb turn 40 does not have the user device 60 or if communication between the user device 60 and the reader unit 30 becomes abnormal for some reason, the user pulls out the handle 50 of the door 12 and presses the button on the secret switch 62 within a predetermined time. Then, the user inputs a predetermined PIN into the secret switch 62. The secret switch 62 transmits the input PIN to the control unit 20. The control unit 20 determines whether the PIN input into the secret switch 62 matches a predetermined regular PIN.

[0045] If it is determined that the PIN number entered into the secret switch 62 is correct, i.e., if a correct operation has been entered into the secret switch 62 (Y in S19), the process proceeds to S16, where the unlocking trigger transmission unit 24 of the control unit 20 unlocks the electric thumb turn 40. If it is determined that the PIN number entered into the secret switch 62 is incorrect (N in S19), the process of S16 is skipped and the process in this figure is terminated. In other words, the locked state of the electric thumb turn 40 is maintained.

[0046] Furthermore, if at least one of the first and second actions is not detected within a predetermined time after an abnormality is detected in the BLE connection with the user device 60 (N in S17), the subsequent processes are skipped and the process in this figure is terminated. In other words, the locked state of the electric thumb turn 40 is maintained. If the start switch 36 of the reader unit 30 is not pressed (N in S10), the process in S11 and after is skipped and the process in this figure is terminated.

[0047] According to the key control system 16 of the embodiment, even if the communication between the reader unit 30 and the user device 60 is abnormal, such as when the user does not have a registered communication terminal, it is possible to unlock the electric thumb turn 40 while maintaining the safety of the house 10. Furthermore, in the embodiment, the unlocking condition is a combination of multiple types of actions performed within a predetermined time, so that even if the communication between the reader unit 30 and the user device 60 is abnormal, it is possible to prevent unlocking by unauthorized persons.

[0048] The present disclosure has been described above based on the embodiment. This embodiment is merely an example, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component or each treatment process of the embodiment, and that such modifications are also within the scope of the present disclosure.

[0049] At least some of the functions of the control unit 20 in the above embodiment may be implemented in the reader unit 30. For example, the functions of the control unit 20 and the reader unit 30 in the embodiment may be integrated and implemented in a single reader unit (which may also be called a key control device).

[0050] It will be understood by those skilled in the art that the functions to be fulfilled by each component recited in the claims can be realized by each component shown in the embodiments and modified examples alone or in cooperation with each other.

[0051] <Additional Notes> The above description of the embodiment and modifications discloses the following techniques. [Technology 1] An operation input unit; A communication unit that communicates with an external device; A control unit that issues an instruction to unlock the electric lock; A storage unit that stores information about a device of a user who is permitted to unlock the electric lock; a transmission unit that transmits unlock trigger information for unlocking the electric lock to the user's device in response to an operation input to the operation input unit; A key control system comprising: According to this key control system, unlocking trigger information is provided to the device of a user who is authorized to unlock the electric lock, thereby preventing unauthorized unlocking and increasing the safety of homes, etc. [Technology 2] The unlocking trigger information includes information on a position where the user should operate the operation input unit, The key control system according to technique 1. According to this key control system, the information necessary for unlocking the electric lock can be presented to a user who is authorized to unlock the electric lock. [Technology 3] The transmission unit transmits unlocking trigger information having different contents each time the unlocking trigger information is transmitted to the user's device. The key control system according to any one of claims 1 to 2. This key control system can more reliably prevent unauthorized unlocking, thereby further increasing the safety of homes and other buildings. [Technology 4] Further comprising an operation input unit different from the operation input unit, The control unit instructs the electric lock to be unlocked when a predetermined operation is input to the different operation input unit, the control unit, when an abnormality in communication with the user device is detected and when a predetermined operation is further detected, enables input of an operation to the different operation input unit. A key control system according to any one of techniques 1 to 3. According to this key control system, even if communication with the user's device is abnormal, in other words, even if unlocking trigger information cannot be provided to the user's device, it is possible to achieve unlocking while maintaining the safety of the home, etc. [Technology 5] The predetermined operation includes a predetermined operation on the operation input unit. The key control system described in technique 4. According to this key control system, even if it is not possible to provide unlocking trigger information to a user's device, it is possible to achieve unlocking while maintaining the safety of a house, etc. [Technology 6] The computer Detecting an operation input to an operation input unit; Transmitting unlocking trigger information for unlocking the electric lock to a device of a user who is registered in advance and is authorized to unlock the electric lock in response to an operation input to the operation input unit. Key control methods. According to this key control method, unlocking trigger information is provided to the device of a user who is authorized to unlock the electric lock, thereby preventing unauthorized unlocking and improving the safety of homes, etc. [Technology 7] On the computer, Detecting an operation input to an operation input unit; Transmitting unlocking trigger information for unlocking the electric lock to a device of a user who is registered in advance and is authorized to unlock the electric lock in response to an operation input to the operation input unit. A computer program to make something happen. According to this computer program, unlocking trigger information is provided to a device of a user who is authorized to unlock the electric lock, thereby preventing unauthorized unlocking and improving the safety of a home, etc. [Explanation of symbols]

[0052] 10 house, 12 door, 16 key control system, 20 control unit, 30 reader unit, 31 communication unit, 32 memory unit, 34 operation input unit, 40 electric thumb turn, 60 user device, 62 secret switch.

Claims

1. An operation input unit; A communication unit that communicates with an external device; A control unit that issues an instruction to unlock the electric lock; A storage unit that stores information about a device of a user who is permitted to unlock the electric lock; a transmission unit that transmits unlock trigger information for unlocking the electric lock to the user's device in response to an operation input to the operation input unit; A key control system comprising:

2. The unlocking trigger information includes information on a position where the user should operate the operation input unit, The key control system of claim 1 .

3. The transmission unit transmits unlocking trigger information having different contents each time the unlocking trigger information is transmitted to the user's device. The key control system of claim 1 .

4. Further comprising an operation input unit different from the operation input unit, The control unit instructs the electric lock to be unlocked when a predetermined operation is input to the different operation input unit, the control unit, when an abnormality in communication with the user device is detected and when a predetermined operation is further detected, enables input of an operation to the different operation input unit. A key control system according to any one of claims 1 to 3.

5. The predetermined operation includes a predetermined operation on the operation input unit. The key control system according to claim 4.

6. The computer Detecting an operation input to an operation input unit; Transmitting unlocking trigger information for unlocking the electric lock to a device of a user who is registered in advance and is authorized to unlock the electric lock in response to an operation input to the operation input unit. Key control methods.

7. A computer having a storage unit for storing information on a device of a user who is permitted to unlock an electric lock, Detecting an operation input to an operation input unit; Transmitting unlock trigger information for unlocking the electric lock to the user's device in response to an operation input to the operation input unit. A computer program to make something happen.

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