JP7305860B2 - electronic key - Google Patents

Description

The present invention relates to electronic keys.

As an electronic key capable of setting a non-response mode to a request signal from an electric lock control device, the one described in Patent Document 1 is known.

In this conventional example, the electronic key can switch between a mode in which it responds to a request signal output from an on-vehicle device (electric lock control device) and a mode in which it does not respond. When a signal is received, it converts from response mode to non-response mode.

An electronic key that allows a change to the non-response mode is registered in advance in the electric lock control device, and when a lock operation signal is received from the registered electronic key, the received electronic key is a mode change setting key. In this case, a key operation signal is transmitted to change the target electronic key to the non-response mode.

JP 2018-204311 A

However, in the conventional example described above, it is necessary to register an electronic key corresponding to the non-response mode in the electric lock control device in advance, so there is a problem of poor usability.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic key that can be changed to a non-response mode without requiring registration in an electric lock control device to improve usability. and

According to the present invention, the above objects are:
An electronic device that remotely operates an electric lock 1 by outputting a lock operation signal (CS) accompanied by an authentication code in response to a request signal (RQ) from an electric lock control device 2 that controls the electric lock 1 that locks and unlocks the doors of an automobile. is the key
A mode conversion operation unit 3 that can be operated by a user is provided,
In addition to a normal mode that outputs a lock operation signal (CS) in response to a request signal (RQ) from the electric lock control device 2, it has a passive invalidation mode that prohibits response to the request signal (RQ),
This is achieved by providing an electronic key that can be converted between the normal mode and the passive disabled mode by operating the mode conversion operation section 3 when receiving the request signal (RQ).

The electronic key outputs a lock operation signal (CS) accompanied by an authentication code as a response signal to the request signal (RQ) from the electric lock control device 2, and the electric lock control device of the authentication code of this lock operation signal (CS) The so-called passive operation of remotely operating the electric lock 1 via the electric lock control device 2 on the condition of the authentication in 2 is configured.

In the present invention, in addition to the normal mode in which the electronic key automatically outputs the lock operation signal (CS) when receiving the request signal (RQ) addressed to the own station, the request signal (RQ) addressed to the own station is output. A passive invalidation mode is provided in which the lock operation signal (CS) is not output even when the signal is received, and the user can select which mode to operate.

In general, lock operation by passive operation is performed by the user operating the request switch 5 arranged in the electric lock control device 2, and outputting from the electronic key as a response signal to the request signal (RQ) output by operating the request switch 5. The electric lock 1 is operated by the received lock operation signal (CS), and the user can confirm the lock operation by the operation of the electric lock 1 after the request switch 5 is operated.

On the other hand, since the user cannot know the output of the lock operation signal (CS) from the electronic key by the passive operation, for example, if there is a user holding the electronic key at a position away from the request switch 5, A genuine electronic key responds to a request signal (RQ) output by an illegally operated request switch 5, and the electric lock 1 can be illegally operated by a lock operation signal (CS) output from this electronic key. Gender cannot be denied.

In the present invention having the passive invalidation mode, if the electronic key is set to the passive invalidation mode, the electronic key will not respond to the request signal (RQ) output by the unauthorized operation of the request switch 5. In addition, safety can be improved, and since no response signal to the request signal (RQ) is output, battery consumption can be reduced.

Further, the conversion operation between the normal mode and the passive invalidation mode is performed by operating the mode conversion operation unit 3 on the electronic key in the state of receiving the request signal (RQ), that is, the mode conversion operation unit of the electronic key. It can be realized only by operating the request switch 5 of the electric lock control device 2 in the state that 3 is operated, and the mode conversion does not require a complicated operation, thus improving usability.

Furthermore, mode conversion is not performed by operating only the mode conversion operation unit 3, and output operation of the request signal (RQ), that is, operation of the request switch 5 is required. Therefore, it is possible to reliably prevent unintended mode conversion.

In addition, the mode setting and the addition of the conversion function do not involve any structural additions or changes to the electric lock control device 2, so it can be easily applied to the existing locking/unlocking control system. can.

Also, the electronic key
The passive invalidation mode is started on the condition that a lock operation signal (CS) for locking is output, and the response to the request signal (RQ) is prohibited only for a predetermined response prohibition period after the start, and then the normal mode is automatically entered. It can be configured to include a reverting fixed time disable mode.

By enabling the fixed time invalidation mode to be selectable, only the response prohibition period immediately after the locking operation can be passively invalidated. As a result, when the electronic key possessed by the user is within the reachable range of the unlocking signal to the electric lock control device 2, the passive operation is prohibited, so that an unauthorized operation of the request switch 5 cannot be responded to. and improve safety.

Further, when the response prohibition period elapses, the normal mode is automatically restored without requiring any operation by the user, so that usability is not deteriorated.

in this case,
In the fixed-time invalidation mode, it is possible to set a grace period during which a response to the request signal (RQ) is allowed within the response prohibited period immediately after the start of the response prohibited period.

By providing a grace period, it is possible to perform a retry operation by a passive operation of the locking operation, thereby improving usability.

Further, the fixed-time invalidation mode is canceled by outputting a lock operation signal (CS) for unlocking, and the electronic key is configured to resume invalidation by outputting a lock operation signal (CS) for locking. By performing the locking operation, the initial state is restored, and the normal mode is substantially changed until the lock operation signal (CS) for locking is output, so that usability is improved.

In addition, the electronic key
A lock control operation unit 4 is provided, and a remote control operation for selectively outputting a lock operation signal (CS) for locking or unlocking is possible by operating the lock control operation unit 4 by a user,
Further, if the lock control operating section 4 is configured to serve also as the mode changing operating section 3, there is no need to dispose the mode changing operating section 3 separately on the electronic key, thereby simplifying the structure.

Further, the fixed-time invalidation mode can constitute an electronic key whose response inhibition period is extended by a locking operation by a remote control operation during the response inhibition period.

1 is a block diagram showing a locking/unlocking control system using an electronic key of the present invention; FIG. It is a figure which shows the operation|movement flow of the electric lock control apparatus at the time of performing locking operation by passive operation|movement. FIG. 10 is a diagram showing an operation flow of the electronic key when performing a locking operation by passive operation; FIG. 10 is a diagram showing an operation flow showing setting change processing between modes; It is a figure which shows the operation|movement flow of the electric lock control apparatus at the time of performing unlocking operation by passive operation|movement. FIG. 10 is a diagram showing an operation flow of the electronic key when performing unlocking operation by passive operation; It is an operation flow at the time of performing locking operation by remote control operation|movement, (a) is an electronic key, (b) is an operation flow of an electric lock control apparatus. It is an operation flow when unlocking operation is performed by remote control operation, (a) is an electronic key, and (b) is an operation flow of an electric lock control device.

FIG. 1 shows a locking/unlocking control system for controlling the locking/unlocking of doors of a house.

The lock/unlock control system communicates between an electric lock 1 fixed to a door, an electric lock control device 2 that controls the locking/unlocking operation of the electric lock 1, and the electric lock control device 2 to operate the electric lock 1 remotely. The electric lock 1 is configured to perform a predetermined operation on the condition that the lock operation signal (CS) output from the electronic key (K) is authenticated by the electric lock control device 2. .

The electric lock control device 2 includes an LF transmission unit 7, a UHF reception unit 8, an authentication unit 9, an electric lock control unit 10, a door opening/closing detection unit 11, an ID storage unit 12, and a request code. An LF transmission unit 7 that has a generation unit 13 and a request switch 5 that can be operated from outside the room and that outputs radio waves in the LF band outputs a request signal (RQ) when the request switch 5 is operated by the user. do.

As will be described later, the electronic key (K) has a passive operation of outputting a lock operation signal (CS) as a response signal to a request signal (RQ) output from the electric lock control device 2, and a It is possible to output the lock operation signal (CS) by either operation of the remote control operation of operating the lock/unlock buttons 4A and 4B as the lock control operation unit 4 to output the lock operation signal (CS). The signal (RQ) includes a request code for specifying one electronic key (K) in a group of electronic keys (K) that allow access to the electric lock control device 2 .

The request code is generated in the request code generation unit 13, and the electric lock control unit 10 outputs a request signal (RQ) containing different request codes at predetermined time intervals to generate an electronic key corresponding to the corresponding request code. Communication with the electronic key (K) is performed using a polling method that waits for a response from (K).

A UHF band radio wave is used for the lock operation signal (CS) output from the electronic key (K), and is received by the UHF receiver 8 . The received lock operation signal (CS) contains an authentication code (ID). The authentication unit 9 compares this authentication code with the authentication code stored in the ID storage unit 12, and if they match, Outputs an authentication successful signal.

The control unit 6 detects the output of the authentication establishment signal from the authentication unit 9, and the outputs of the door open/close detection unit 11 and the lock state detection unit 14, and furthermore, the lock operation signal (CS) indicates whether to lock or unlock. A drive signal for locking or unlocking is output to the electric lock control unit 10 to drive the electric lock 1 based on whether the electric lock 1 is locked or unlocked.

In order to know the type of locking/unlocking in the passive operation, in this example, when the request switch 5 is operated, the control unit 6 inquires of the lock state detection unit 14 about the lock state, and if it is in the lock state, determines that it is an unlock operation. On the other hand, when it is in the unlocked state, it determines that it is a locking operation and outputs a request signal (RQ) instructing either locking or unlocking.

Upon receiving the request signal (RQ), the electronic key (K) includes an identification bit in the lock operation signal (CS) indicating whether it is intended for locking or unlocking, or responds with a lock operation signal ( CS) is determined by matching it with the locking/unlocking information when the request signal (RQ) is output.

Further, in the case of remote control operation, the locking/unlocking identification signal is included in addition to the authentication code, and when the authentication is successful, the electric lock is activated if the locking/unlocking identification signal is a locking instruction in the closed/unlocked state. When the door is closed and locked and the lock/unlock identification signal is an unlocking instruction, the electric lock control unit 10 is set with a lock drive signal to drive the electric lock 1 .

On the other hand, the electronic key (K) includes an LF receiving section 16, a UHF transmitting section 17, a time measuring section 18, a mode determining section 19, a mode setting section 20, a storage section 21, and a request code which operate under the control of the control section 15. A lock button 4A and an unlock button 4B as the lock control operation unit 4 are arranged at positions that can be operated from the outside, including the collation unit 22 .

The electronic key (K) is operated by passive operation and remote control operation, and the remote control operation is operated by the user operating either the lock button 4A or the unlock button 4B, and the lock/unlock button 4B is operated. , the control unit 15 reads out the authentication code (ID) from the storage unit 21 , gives the lock/unlock identification code corresponding to the lock/unlock buttons 4 A and 4 B, and outputs the code from the UHF transmission unit 17 .

As described above, the LF receiver 16 receives the request signal (RQ) output from the electric lock control device 2 and determines whether the request signal (RQ) is directed to its own station. The request signal (RQ) is determined by comparing the request code included in the request signal (RQ) with the request code stored in the storage unit 21 in the request code collating unit 22. If they match, the authentication code (ID ) is output from the UHF transmission unit 17 .

As described above, the electronic key (K) can be operated in a mode (normal mode) in which the user selects between remote control operation and passive operation as appropriate, and in a passive invalidation mode that invalidates the passive operation. It is The passive disable mode includes a complete disable mode that disables passive actions until a mode conversion operation is performed by the user, which will be described later, and a passive action disable mode that disables passive actions for a certain period of time, and after a certain period of time (response prohibition period) elapses. , the invalidation mode is set for a certain period of time to automatically return to the normal mode.

The fixed time invalidation mode does not start at the same time as the conversion to the mode, but starts only when either the locking operation by the passive operation or the locking operation by the remote control operation is performed, and during the response prohibition period Whether or not is measured by the time measuring unit 18 .

If the response prohibition period is set to a moving time until the lock operation signal (CS) from the electronic key (K) does not reach the electric lock control device 2 after the lock operation is completed, for example, about 5 minutes, the user Even if the request switch 5 is illegally operated in an unnoticed place, the passive operation is restricted only while the lock operation signal (CS) reaches the electric lock control device 2, so that the illegal unlocking operation can be performed. You can definitely prevent it from happening.

In addition, after the response prohibition period has passed, it automatically returns to the normal mode without bothering the user, and passive operation becomes possible. to improve usability.

Furthermore, in this example, a grace period during which passive operation is allowed is set in the fixed-time invalidation mode. The grace period is set to a predetermined period immediately after the mode is started within the response prohibition period, and the grace period can be used to re-operate when the locking operation by the passive operation is incomplete. The grace period is determined in consideration of the time required to retry the locking operation, or the time generally required for the user to move to a place where the request switch 5 cannot be seen.

Further, in this example, when the electronic key (K) outputs a lock operation signal (CS) instructing unlocking within the grace period, the invalidation operation is stopped, and then the lock operation signal for locking. Until (CS) is output, operation similar to the normal mode is possible.

Furthermore, in the fixed period invalidation mode, when a lock operation signal (CS) for locking by remote control operation is output during the response prohibition period, the response prohibition period is further extended, and the remote control is operated. It is possible to close the security hole in which the unlocking key passes the response prohibition period after the door is locked by the lock, and the response to the request signal (RQ) becomes possible.

It is possible to set the extension period of the response prohibition period as appropriate, but if it is set to the same length as the response prohibition period, the time from when the remote control is locked to when the response is prohibited will be the same as the passive operation. Therefore, the passive operation can be stopped after a predetermined time without making the user aware of the difference between the remote control operation and the passive operation.

Furthermore, in the fixed period invalidation mode, when a lock operation signal (CS) for unlocking by remote control operation is output during the response prohibition period, the invalidation operation is stopped, and then the lock operation signal (CS) for locking is output. CS) can be operated in the same way as in the normal mode.

By adding the unlocking operation by the remote control operation and the operation by the locking operation by the remote control operation described above, the operation by the passive operation and the operation by the remote control operation become equal, and the occurrence of the difference in behavior due to the difference in operation is prevented. be able to.

FIG. 2 and subsequent figures show the operation flow of the locking/unlocking control system configured as described above.

FIG. 2 shows the operation of the electric lock control device 2 with respect to the locking operation during the passive operation. The output of the detector 14 is checked, and when the electric lock 1 is unlocked and the door is closed (step C1-2), a lock request signal (RQ) is transmitted (step C1-3).

When there is a response from the electronic key (K) with the matching request code to the transmission of the request signal (RQ), and the UHF receiver 8 receives the response signal (lock operation signal (CS)) (step C1-4). , the control unit 6 extracts an authentication code (ID) from the lock operation signal (CS) and authenticates it in the authentication unit 9 .

When authentication by the authentication unit 9 is established (step C1-5), a locking drive signal is set in the electric lock control unit 10 to perform a locking operation (step C1-6), and the control ends.

On the other hand, if the condition of step C1-2 or the condition of step C1-5 is not satisfied, the control is terminated as it is.

FIG. 3 shows the operation of the electronic key (K) with respect to the locking operation during the passive operation. When the control is started and reception of the request signal (RQ) is detected by the LF receiver 16 (step K1-1 ), the request code collating section 22 checks whether or not the request signal (RQ) is addressed to the own station. A setting change process is performed (step K1-3).

Next, if the passive operation is not currently prohibited, i.e., if it is not in the complete invalidation mode, or if the grace period in the fixed time invalidation mode, or after the response prohibition period has elapsed (step K1-4), A lock operation signal (CS) instructing locking including an authentication code is output from the UHF transmission section 17 (step K1-5).

After that, if the fixed-time invalidation mode is in effect (step K1-6), the time measuring section 18 is operated to start measuring the response inhibition period, and the control ends (step K1-7). As described above, during the response prohibition period, the passive operation is prohibited except for the grace period, after which the normal mode is automatically restored.

On the other hand, if the conditions are not satisfied in steps K1-2, K1-4 and K1-6, the control is terminated without executing the subsequent steps.

FIG. 4 shows the setting change processing in step K1-3 described above. The setting change process is started by receiving a request signal (RQ) from the electric lock control device 2 while the mode conversion operation section 3 of the electronic key (K) is being operated, and the mode of the lock/unlock buttons 4A and 4B is changed. In this example used as the operation unit 3, the destination mode is determined according to the type of the operated lock/unlock button 4A, 4B.

The mode change operation is started on the condition that a request signal (RQ) addressed to the own station is received (step M1), and then both lock/unlock buttons 4A and 4B of the electronic key (K) are operated. If yes (step M2), the mode setting section 20 changes to the normal mode (step M3). The result of the mode change is stored in the storage unit 21, then the time measuring unit 18 is reset (step M4) and the change processing is terminated.

On the other hand, when only the unlocking button 4B is operated while receiving the request signal (RQ) (step M5), after changing to the complete invalidation mode (step M6), step M4 is executed to execute the change processing. finish.

Further, when only the lock button 4A is operated while receiving the request signal (RQ) (step M7), after changing to the invalidation mode for a certain period of time (step M8), step M4 is executed to execute the changing process. finish.

If the lock/unlock buttons 4A and 4B are not operated while the request signal (RQ) is received, the change processing is terminated without changing the mode.

FIG. 5 shows the operation of the electric lock control device 2 with respect to the unlocking operation during the passive operation. When the control is started and the control unit 6 detects the operation of the request switch 5 (step C2-1), the locked state The output of the detector 14 is checked, and when the electric lock 1 is in the locked state (step C2-2), an unlock request signal (RQ) is transmitted (step C2-3).

When there is a response from the electronic key (K) with the matching request code to the transmission of the request signal (RQ), and the UHF receiver 8 receives the response signal (lock operation signal (CS)) (step C2-4). , the control unit 6 extracts an authentication code (ID) from the lock operation signal (CS) and authenticates it in the authentication unit 9 .

When authentication by the authentication unit 9 is established (step C2-5), an unlocking drive signal is set in the electric lock control unit 10 to perform the locking operation (step C2-6), and the control ends. On the other hand, if the conditions of steps C2-1 and C2-2 or the condition of step C2-5 are not satisfied, the control is terminated.

On the other hand, when the electronic key (K) for passive unlocking operation receives a request signal (RQ) from the electric lock control device 2 (step K2-1), as shown in FIG. It is determined whether or not it is a signal (RQ), and if it is addressed to itself (step K2-2), the setting change process shown in FIG. 4 is performed (step K2-3).

Next, it is determined whether or not passive operation is permitted at present, and if permitted (step K2-4), a lock operation signal (CS) is output (step K2-5). The measurement unit 18 is reset (step K2-6) to end the control.

When the time measurement unit 18 is reset and the fixed time invalidation mode is set, the operation returns to the initial state and operates in the same manner as in the normal mode until the lock operation signal (CS) for locking is output.

FIG. 7 shows the operation flow of the locking operation by the remote controller operation. As shown in FIG. 7(a), the electronic key (K) detects the operation of the lock button 4A by the control unit 15 and unlocks it. When it is detected that the button 4B is not operated (step K3-1), a lock operation signal (CS) for locking is output (step K3-2).

After that, the invalidation setting storage section 21a of the storage section 21 is checked, and if the current mode is in the invalidation mode for a certain period of time and during the response prohibition period excluding the grace period (steps K3-3 and K3-4), After updating the current measured value of the time measuring unit 18 to the end period of the grace period and immediately shifting to the response prohibited state to substantially extend the response prohibited state (step K3-5), the control is terminated.

On the other hand, if it is determined in step K3-4 that the passive operation is not disabled, the time measurement unit 18 starts measuring (step K3-6), and sets a new response inhibition period.

On the other hand, when the electric lock control device 2 receives the authentication code together with the lock operation signal (CS) for locking from the electronic key (K), as shown in FIG. -1), authenticated by the authenticating unit 9, and when the authentication is established (step C3-2), the locking drive signal is set in the electric lock control unit 10 to perform the locking operation (step C3-3), and the control ends. do.

FIG. 8 shows the operation flow of unlocking operation by remote controller operation. As shown in FIG. When it is detected that the lock button 4A is not operated (step K4-1), a lock operation signal (CS) for unlocking is output (step K4-2).

After that, the clocking in the invalidation mode for a certain period of time is stopped, and the time measuring unit 18 is reset (step K4-3) in order to wait for the start of clocking by the output of the lock operation signal (CS) for locking, and the control ends. do.

On the other hand, as shown in FIG. 8(b), the electric lock control device 2 receives the authentication code together with the lock operation signal (CS) for unlocking from the electronic key (K) (step C4-1). When authentication is established in the unit 9 (step C4-2), an unlocking drive signal is set in the electric lock control unit 10 to unlock the electric lock 1 (step C4-3), and the control ends. do.

In the above description, the locking/unlocking control system for controlling the locking/unlocking of the doors of a house has been described as an example, but the locking/unlocking control system for the doors of automobiles can also be used.

1 electric lock 2 electric lock control device 3 mode conversion operation unit 4 lock control operation unit RQ request signal CS lock operation signal

Claims (1)

An electronic key that remotely operates an electric lock by outputting a lock operation signal accompanied by an authentication code in response to a request signal from an electric lock control device that controls an electric lock that locks and unlocks an automobile door ,
A mode conversion operation unit that can be operated by a user is provided, and
In addition to a normal mode that outputs a lock operation signal in response to a request signal from the electric lock control device, it has a passive invalidation mode that prohibits response to the request signal,
An electronic key capable of converting between the normal mode and the passive invalidation mode by operating the mode conversion operation section when receiving the request signal.

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