JP2016117994A - Key-in-lock system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a key-in-lock system that makes it possible to simply change a password for key-in-lock.SOLUTION: A plurality of passwords Pw necessary for releasing key-in-lock are prepared correspondingly to an electronic key 2's placement locations in a vehicle. In performing key-in-lock release, a password Pw depending on the electronic key 2's placement location in the vehicle at the time of the release is input by using, for example, a sensor part 27 provided on a vehicle external door handle. When the input password Pw agrees with a password Pw corresponding to the electronic key 2's placement location in the vehicle, the key-in-lock is released.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a key-in lock system that enables a door lock while an electronic key is placed in a vehicle.

  2. Description of the Related Art Conventionally, an electronic key system for operating an in-vehicle device by performing wireless ID verification between a vehicle and an electronic key is well known. As this electronic key system, there is a key operation free system that performs ID collation by narrow-band radio in response to communication from a vehicle (see Patent Document 1, etc.). In this key operation free system, if ID collation (smart collation) is established with an electronic key outside the vehicle, the locking / unlocking operation of the vehicle door is permitted or executed.

JP 2005-262915 A

  By the way, in this kind of electronic key system, what is provided with the key-in lock function which enables a door lock with the electronic key being put in the vehicle is examined. In this case, an input of a password is imposed on unlocking the vehicle door in the key-in locked state. However, if the user is required to periodically update the password for security against unauthorized key-in unlocking, there is a problem that this operation becomes troublesome.

  An object of the present invention is to provide a key-in lock system capable of simply changing a key-in lock password.

  A key-in lock system that solves the above-described problem is capable of locking and unlocking a door when wireless ID verification is established between a vehicle and an electronic key, and the key-in lock that locks the door while the electronic key is placed in the vehicle. In the configuration that enables the key-in lock, an input is imposed, and a plurality of passwords set according to the position of the electronic key in the vehicle and a place determination that can determine the place of the electronic key And a password setting unit that selects a password corresponding to the location of the electronic key and uses this as a password necessary for releasing the key-in lock.

  According to this configuration, a plurality of passwords necessary for releasing the key-in lock are prepared in accordance with the place where the electronic key is placed in the vehicle. When the key-in lock is released, a password corresponding to the location of the electronic key in the vehicle at that time is input. If this is correct, the key-in lock is released. For this reason, switching the password for unlocking the key-in lock can be realized by simply changing the place where the electronic key is placed in the vehicle. Therefore, it is possible to easily switch the password used for releasing the key-in lock.

  In the key-in lock system, it is preferable that the place determination unit determines a place in the vehicle of the electronic key based on a received signal strength of a radio wave communicated between the vehicle and the electronic key. According to this configuration, the place where the electronic key is placed in the vehicle can be determined by a simple process of confirming the received signal strength of the radio wave.

  In the key-in lock system, when it is confirmed that a door lock operation has been performed from the outside of the vehicle in a state where at least one of the electronic key and the vehicle has shifted to the lock permission mode, an unlock execution unit that locks the vehicle It is preferable to provide. According to this configuration, since the vehicle cannot be locked unless at least one of the electronic key and the vehicle is in the unlock permission mode, the vehicle can be correctly shifted to the lock according to the user's intention. Is possible.

  In the key-in lock system, when an operation for releasing the key-in lock is received from outside the vehicle, it is confirmed whether or not the electronic key is present in the vehicle, and when the electronic key is present, the user is prompted to enter a password. Imposes password authentication by comparing the input password and a password selected according to the location of the electronic key, and unlocks the key lock on condition that the password authentication is established It is preferable to provide a release unit. According to this configuration, when releasing the key-in lock, it is confirmed whether or not the electronic key is present in the vehicle, which is advantageous for performing the key-in lock release more correctly.

  The key-in lock system includes a sensor unit that is disposed at a position operable from outside the vehicle and has a sensitivity difference on a detection surface, and the sensitivity difference is associated with each value of the password. The unlocking unit preferably takes in the input password based on a detection signal input from the sensor unit. According to this configuration, when inputting a password such as a numerical value in the sensor unit, the numerical value of the password is input while changing the detection surface touched on the sensor unit. It becomes possible.

  According to the present invention, a key-in lock password can be changed simply in a key-in lock system.

The block diagram of the key lock system of one Embodiment. The external view of the vehicle exterior door handle with the sensor part. The wave form diagram of the output voltage of a sensor part with a sensitivity difference in a detection surface. The flowchart which shows the procedure when setting a password. Explanatory drawing which shows the example of the link | link with the place in the car of an electronic key, and a password. The flowchart which shows the procedure at the time of performing a key lock. The flowchart which shows the procedure at the time of canceling | releasing a key lock.

Hereinafter, an embodiment of a key-in lock system will be described with reference to FIGS.
As shown in FIG. 1, the vehicle 1 includes an electronic key system 3 that performs ID verification wirelessly with the electronic key 2. The electronic key system 3 is a key operation-free system that executes ID collation by narrowband wireless (communication distance: 1 to several meters) triggered by communication from the vehicle 1. Hereinafter, the ID verification of the key operation free system is referred to as “smart verification”, and the communication is referred to as “smart communication”.

  The vehicle 1 includes a verification ECU (Electronic Control Unit) 4 that confirms the validity of the electronic key 2 in ID verification, a body ECU 5 that manages the power supply of the on-vehicle electrical components, and an engine ECU 6 that controls the engine 7. These ECUs are connected through a communication line 8 in the vehicle. The communication line 8 is a CAN (Controller Area Network) or a LIN (Local Interconnect Network). The electronic key ID is written and stored in the memory 9 of the verification ECU 4 as the ID of the electronic key 2 registered in the vehicle 1.

  The vehicle 1 includes an in-vehicle transmitter 10 capable of transmitting ID verification radio waves outside the vehicle, an in-vehicle transmitter 11 capable of transmitting ID verification radio waves into the vehicle, and a vehicle receiver 12 capable of receiving radio waves from the electronic key 2. With. The external transmitter 10, the in-vehicle transmitter 11, and the vehicle receiver 12 are connected to the verification ECU 4 and their operations are managed. The vehicle-mounted transmitter 10 and the vehicle-mounted transmitter 11 can transmit LF (Low Frequency) band radio waves. The vehicle receiver 12 can receive radio waves in the UHF (Ultra High Frequency) band. The body ECU 5 controls the operation of the door lock mechanism 13a, which is a mechanical part that switches between locking and unlocking the door 13, based on a command from the verification ECU 4.

  The vehicle 1 includes an engine switch 14 that is operated when the vehicle power source is switched. The engine switch 14 is a push-type momentary switch. The verification ECU 4 determines the power supply state based on the detection signal input from the engine switch 14 and switches the vehicle power supply to take that state. The power state includes IG off, ACC on, IG on, and engine start.

  The electronic key 2 includes a key control unit 15 that controls the operation of the electronic key 2, a reception unit 16 that can receive radio waves transmitted from the vehicle 1, and a transmission unit 17 that can transmit radio waves to the vehicle 1. An electronic key ID used for ID verification with the vehicle 1 is written and stored in the memory 18 of the key control unit 15. The receiving unit 16 can receive LF radio waves. The transmission unit 17 can transmit UHF radio waves.

  When the transmitter 10 outside the vehicle forms a communication area for LF radio waves outside the vehicle, when the electronic key 2 enters this communication area, smart communication is established outside the vehicle and smart verification outside the vehicle is started. The smart verification outside the vehicle includes vehicle code verification for authenticating a unique vehicle code of the vehicle 1, challenge response authentication using an encryption key, and electronic key ID verification for authenticating an electronic key ID. The verification ECU 4 confirms whether or not all of these verifications are established in the electronic key 2 located outside the vehicle at the time of smart verification outside the vehicle. And if collation ECU4 confirms that in-vehicle smart collation is materialized, it will permit or perform locking / unlocking of door 13. FIG.

  In addition, when the electronic key 2 enters the communication area of the in-vehicle transmitter 11, the verification ECU 4 establishes smart communication in the vehicle and starts smart verification in the vehicle. In the in-vehicle smart collation, various collations similar to the out-of-vehicle smart collation are executed. When the verification ECU 4 confirms that the in-vehicle smart verification is established, the verification ECU 4 permits the transition operation of the vehicle power source by the operation of the engine switch 14.

  The electronic key system 3 includes a key-in lock function (key-in lock system 20) that enables the door 13 to be locked while the electronic key 2 remains in the vehicle. The key-in lock system 20 of the present example enables the door lock with the electronic key 2 placed in the vehicle, that is, the key-in lock, after the electronic key 2 or the vehicle 1 is shifted to the lock permission mode by a specific operation. It has become. In addition, the key-in lock system 20 of this example is set in plural so that the password Pw required for unlocking the key-in lock differs depending on the location of the electronic key 2 in the vehicle.

  The key-in lock system 20 includes a password Pw that is input to the user when releasing the key-in lock. A plurality of passwords Pw of this example are provided so that values differ depending on the place in the vehicle of the electronic key 2 at the time of key-in lock. These passwords Pw are registered in the memory 9 of the verification ECU 4. The password in this example is constructed by, for example, an enumeration of numerical values “0 to 9”.

  The key-in lock system 20 includes a placement determination unit 21 that can determine the placement of the electronic key 2 present in the vehicle. The placement location determination unit 21 is provided in the verification ECU 4. The place determination unit 21 uses, for example, a received signal strength measuring unit 22 (received signal strength measuring function) provided in the electronic key 2 so that the electronic key 2 transmits radio waves transmitted from the vehicle 1 during smart communication. The received signal strength at the time of reception is measured, and the place where the electronic key 2 is placed is determined based on the measured data of the received signal strength.

  The key-in lock system 20 includes a password setting unit 23 that sets a password required when releasing the key-in lock. The password setting unit 23 is provided in the verification ECU 4. The password setting unit 23 sets a password to be used based on the determination result of the storage location determination unit 21 among a plurality of prepared passwords.

  The key lock system 20 includes an lock execution unit 24 that operates when the vehicle 1 is shifted to the key lock state. In this example, the interlock execution unit 24 is provided in the vehicle 1 (collation ECU 4) as 24a, and provided in the electronic key 2 (key control unit 15) as 25b. The unlock execution unit 24 shifts at least one of the vehicle 1 and the electronic key 2 to an unlock permission mode that allows the vehicle 1 to be locked with a certain prescribed operation as a trigger. When the lock execution unit 24 confirms that the door lock operation has been executed from outside the vehicle in a state where at least one of the vehicle 1 and the electronic key 2 is shifted to the lock permission mode, the lock execution unit 24 locks the vehicle 1.

  The key-in lock system 20 includes an lock unlocking unit 25 that operates when releasing the key-in lock of the vehicle 1. The unlocking unit 25 is provided in the verification ECU 4. The unlocking unit 25 confirms whether or not the electronic key 2 exists in the vehicle when an unlocking operation is received from the outside of the vehicle when the key is locked. When the unlocking unit 25 confirms that the electronic key 2 is present in the vehicle, the unlocking unit 25 imposes a password input on the user, authenticates the input password, and enters the key-in on the condition that this authentication is established. unlock.

  As shown in FIG. 2, the key-in lock system 20 includes a sensor unit 27 that is used when inputting the password Pw when releasing the key-in lock. The sensor unit 27 is attached to the door handle 28 outside the vehicle. The sensor unit 27 detects a touch operation on the outside door handle 28 by the user, and includes, for example, a capacitance sensor. The sensor unit 27 of this example is also used for the key-in lock unlocking operation by using what is used when detecting a normal door lock release operation. For this reason, when the touch operation of the outside door handle 28 is detected by the sensor unit 27 in a situation where the outside smart verification is established, the locked door 13 is unlocked.

  As shown in FIG. 3, the sensor unit 27 has a sensitivity difference on the detection surface 27a. This is because a password can be input from the sensor unit 27 by associating the sensitivity difference of the sensor unit 27 with each number of the password. In the case of this example, the sensitivity of the sensor unit 27 has a sensitivity characteristic that the sensitivity decreases in a curved line as it goes from one end to the other end. Then, the sensor unit 27 of the present example has each sensitivity so that the range of the output voltages V1 to V2 corresponds to “0” of the password value, and the range of the output voltages V2 to V3 corresponds to “1” of the password value. Is associated with the pass award numerical value “0-9”.

Next, the operation of the key lock system 20 will be described with reference to FIGS.
[Password setting]
As shown in FIG. 4, in step 101, the password setting unit 23 takes in a password (input password) Pw input by the user. The password may be input using a car navigation system in the vehicle. The password Pw may be a four-digit number, for example. After entering the password, the user places the electronic key 2 in an arbitrary place. The place where the electronic key 2 is placed is preferably, for example, on the back side of the steering column or under the seat so that it cannot be seen from outside the vehicle.

  In step 102, the password setting unit 23 performs smart communication (in-car smart communication) with the electronic key 2 placed at an arbitrary place. If the communication partner is a regular electronic key 2, smart verification (in-vehicle smart verification) is established.

  In step 103, the electronic key 2 transmits the received signal strength data (RSSI data) measured in the process of smart communication to the vehicle 1. In the case of this example, the received signal strength is measured by the received signal strength measuring unit 22 when the electronic key 2 receives the radio wave transmitted from the vehicle 1 during smart communication, and this measured data is transmitted from the electronic key 2 to the vehicle 1. To UHF.

  In step 104, the password setting unit 23 associates the input password Pw acquired in step 101 with the received signal strength received from the electronic key 2 and stores it in the memory 9. Then, the above password setting is repeated in the same manner by changing the place where the electronic key 2 is placed and the password Pw.

  FIG. 5 illustrates a specific example of the combination of the place where the electronic key 2 is placed in the vehicle and the password Pw. In the case of the example in the figure, the password Pw when the electronic key 2 is placed on the back side of the steering column is set to “9123”, and the password Pw when the electronic key 2 is placed under the seat is “1234”. And the password Pw when the electronic key 2 is placed in the accessory box of the center cluster is set to “5678”. In this way, different passwords Pw are set in accordance with the placement positions of the electronic keys 2 in the vehicle.

[Key-in lock operation]
As shown in FIG. 6, in step 201, the unlock execution unit 24 b of the electronic key 2 is required to switch the operation mode of the electronic key 2 to a mode in which the vehicle 1 can be locked. To "". In order to set the electronic key 2 to the unlock permission mode, for example, after operating the lock button 31 and the unlock button 32 (see FIG. 1) of the electronic key 2, the wireless ID verification between the vehicle 1 and the electronic key 2 is performed. (An example is immobilizer collation) It is good to implement | achieve. The immobilizer verification is a kind of wireless authentication using, for example, RFID (Radio Frequency IDentification), and is authentication for confirming the validity of the ID information of the tag 33 (see FIG. 1) mounted on the electronic key 2.

  The lock button 31 is an operation unit that is operated when the door 13 is locked by the wireless key system. The unlock button 32 is an operation unit that is operated when the door 13 is unlocked by the wireless key system. The wireless key system is a function of the electronic key system 3 and can operate the vehicle 1 in response to communication from the electronic key 2. Further, ID information for immobilizer verification is prepared for the tag 33, and the validity of this ID code is confirmed through short-range wireless communication.

  In step 202, the unlock execution unit 24a of the vehicle 1 detects a door lock operation from the outside of the vehicle. The door lock operation includes an operation in which the user who gets off the vehicle presses the lock button 34 of the door handle 28 outside the vehicle. The lock button 34 is an operation unit that is operated when the door 13 is locked from outside the vehicle when smart communication outside the vehicle is established.

  In step 203, the interlock execution unit 24a executes communication with the electronic key 2 in order to confirm that the electronic key 2 exists in the vehicle. The key presence confirmation communication may be, for example, the above-described in-car smart communication.

In step 204, if the electronic key 2 is in the lock permission mode, the unlock execution unit 24b notifies the vehicle 1 to that effect in the process of key presence confirmation.
In step 205, upon receiving a notification from the electronic key 2 that the lock permission mode is set, the lock execution unit 24a executes key lock. As a result, the door 13 is locked while the electronic key 2 is placed in the vehicle. In the unlock permission mode, even if a normal in-vehicle smart collation sequence is executed between the vehicle 1 and the electronic key 2, the collation is established by disabling a response from the electronic key 2, for example. This refers to a state where it is not allowed to occur.

[Key-in lock release operation]
As shown in FIG. 7, in step 301, the unlocking unit 25 inputs an in-vehicle entry trigger as an operation imposed on the user when releasing the key-in lock. As an in-car entry trigger, for example, there is a long press (pressing operation of about 10 seconds) of the lock button 34 of the outside door handle 28.

  In step 302, the unlocking unit 25 performs communication with the electronic key 2 in order to confirm that the electronic key 2 exists in the vehicle. This communication for confirming the presence of a key is a communication for transmitting to the electronic key 2 a command for activating the electronic key 2 in the unlock permission mode. By operating the electronic key in accordance with the command, the above-described communication is performed. Establish in-car smart verification. In addition, during the key presence confirmation communication, the electronic key 2 measures the received signal strength when the radio wave transmitted from the vehicle 1 is received.

  In step 303, if the electronic key 2 is in the unlock permission mode, the unlocking unit 25 indicates that the electronic key 2 is set in the unlock permission mode in the key presence confirmation communication process. Notice. Further, at the time of this communication, the electronic key 2 transmits to the vehicle 1 measurement data of the received signal strength measured in the communication process of the key existence confirmation described above.

  In step 304, when the unlocking unit 25 confirms that the electronic key 2 in the unlock permission mode exists in the vehicle, the unlocking unit 25 shifts the vehicle 1 to the password input state. When the vehicle 1 shifts to the password input state, the power is turned on to the sensor unit 27 that has been in the standby state, and the sensor unit 27 is activated. After the sensor unit 27 is activated, the user touches the sensor unit 27 to input the password Pw corresponding to the place where the electronic key 2 is placed in the vehicle. In the case of this example, the detection surface 27a of the sensor unit 27 is divided into regions based on the difference in sensitivity for each location, and each region corresponds to a numerical value of 1 to 9, and the detection surface 27a corresponding to each numerical value is set to a predetermined value. The password Pw is input by operating the number of times.

In step 305, the unlocking / unlocking unit 25 acquires a password (input password) Pw input by the user through the sensor unit 27.
In step 306, the unlocking unit 25 reads the password Pw corresponding to the received signal strength received from the electronic key 2 from the memory 9.

  In step 307, the unlocking / unlocking unit 25 executes password authentication by comparing the input password Pw received from the sensor unit 27 with the password Pw set according to the received signal strength.

  In step 308, when the unlocking unit 25 confirms that the password authentication in step 307 is established, the unlocking unit 25 releases the key-in lock. That is, the door 13 is unlocked, and the boarding is permitted. When the key-in lock is released, it is preferable to return the electronic key 2 to the original normal mode by transmitting the fact to the electronic key 2 or the like.

According to the configuration of the present embodiment, the following effects can be obtained.
(1) A plurality of passwords Pw necessary for releasing the key-in lock are prepared according to the place where the electronic key 2 is placed in the vehicle. When the key-in lock is released, the password Pw corresponding to the location of the electronic key 2 in the vehicle at that time is input, and if this is correct, the key-in lock is released. For this reason, when switching the password Pw for unlocking the key-in lock, it can be realized only by changing the place where the electronic key 2 is placed in the vehicle. Therefore, it is possible to easily switch the password Pw used for releasing the key-in lock.

  (2) In determining where the electronic key 2 is placed in the vehicle, the determination is performed based on the received signal strength of the radio wave communicated between the vehicle 1 and the electronic key 2. Therefore, the place where the electronic key 2 is placed in the vehicle can be determined by a simple process of confirming the received signal strength of the radio wave.

  (3) The vehicle 1 is unlocked when it is confirmed that the door lock operation has been executed from outside the vehicle after the electronic key 2 is shifted to the unlock permission mode. Therefore, since the door 13 cannot be locked unless the electronic key 2 is put into the lock permission mode, the vehicle 1 can be correctly shifted to lock in accordance with the user's intention.

  (4) At the time of key-in lock, when an operation for releasing the key-in lock is received from outside the vehicle, it is confirmed by smart communication whether or not the electronic key 2 exists in the vehicle. Therefore, when releasing the key-in lock, it is confirmed whether or not the electronic key 2 is in the vehicle, which is advantageous for correctly releasing the key-in lock.

  (5) By giving a sensitivity difference to the detection surface 27a of the sensor unit 27 and associating the sensitivity difference with the numerical value of the password Pw, the numerical value of the password Pw can be input on the detection surface 27a. Therefore, since it becomes possible to input the password Pw while changing the location where the detection surface 27a of the sensor unit 27 is touched, it is possible to ensure the ease of inputting the password Pw.

  (6) The sensor unit 27 is shared between the two functions by using what is used when detecting a normal door lock release operation for inputting a key-in lock release password. Therefore, it is advantageous to reduce the number of parts.

Note that the embodiment is not limited to the configuration described so far, and may be modified as follows.
The password may be set by manually inputting the received signal strength and the password Pw using, for example, a car navigation system. Moreover, you may implement using a dedicated tool. As described above, the association setting between the password Pw and the received signal strength can be changed to various modes.

  In order to put the electronic key 2 into the unlock permission mode, it is possible to change to another method such as switching the electronic key 2 to the unlock permission mode by communication with a high-function mobile phone possessed by the user. .

  The operation that becomes a trigger when switching to key-in lock is not limited to the method of operating the lock button 34, but can be changed to another method, for example, operating the door handle 28 outside the vehicle a predetermined number of times.

-The place where the electronic key 2 is placed in the vehicle when entering the in-lock state may be determined, and the password Pw necessary for unlocking may be set.
The vehicle 1 may be used instead of the electronic key 2 to enter the lock permission mode. Moreover, you may make it put both the vehicle 1 and the electronic key 2 in an interlock permission mode.

  The determination of the place where the electronic key 2 is placed is not limited to a method using the received signal strength of communication. It is possible to appropriately change to other methods such as detecting

  The operation that serves as a trigger for releasing the key-in lock is not limited to the long press of the lock button 34, and other methods such as operating the exterior door handle 28 a predetermined number of times or touching the sensor unit 27 for a certain period of time. Can be changed.

  -Communication with the electronic key 2 implemented with the key-in lock system 20 is not limited to smart communication (smart collation). For example, the authentication may be changed to authentication using another communication method such as near field communication (near field wireless communication). Near field communication includes, for example, Bluetooth (registered trademark) and NFC (Near Field Communication).

  -The sensor part 27 which detects the input password Pw is not limited to sharing with what is used when detecting normal door unlocking operation. That is, a sensor unit 27 that detects the input password Pw may be newly provided.

The sensor unit 27 may be changed to a sensor other than the touch sensor.
-Sensitivity is fixed without providing a difference in sensitivity on the detection surface 27a of the sensor unit 27, and a numerical value is input by the number of touches of the sensor unit 27. When a certain blank is opened in the touch operation, the digit of the password Pw is raised. By doing so, a method of inputting a password Pw having a predetermined number of digits may be adopted. Thus, the input method of the password Pw can be changed to various modes.

As long as the sensor unit 27 is provided in the vehicle 1, any member may be used.
The electronic key 2 is not limited to the dedicated key of the vehicle 1 and can be changed to another communication terminal such as a high-function mobile phone.

The vehicle 1 is not limited to a passenger car and can be changed to other types.
Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below together with their effects.

  (A) In the key-in lock system, the sensor unit is also used for the key-in unlocking operation by using one used when detecting a normal door unlocking operation. This configuration is advantageous in reducing the number of parts.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Electronic key, 13 ... Door, 20 ... Key lock system, 21 ... Place determination part, 23 ... Password setting part, 24 (24a, 24b) ... Lock execution part, 25 ... Lock release part , 27... Sensor unit, 27a... Detection surface, Pw... Password, V1 to V3.

Claims (5)

In a key-in lock system that enables locking and unlocking of the door when wireless ID verification is established between the vehicle and the electronic key, and enables key-in locking to lock the door while the electronic key is placed in the vehicle,
Input is required when unlocking the key-in lock, multiple passwords set according to the location of the electronic key in the car,
A placement determination unit capable of determining the placement of the electronic key;
A key-in-lock system comprising: a password setting unit that selects a password corresponding to a place where the electronic key is placed and uses the password as a password necessary for releasing the key-in lock. 2. The key-in according to claim 1, wherein the place determination unit determines a place in the vehicle of the electronic key based on a received signal strength of a radio wave communicated between the vehicle and the electronic key. Lock system. An at least one of the electronic key and the vehicle is provided with an in-lock execution unit for in-locking the vehicle when it is confirmed that a door lock operation has been executed from outside the vehicle in a state where the in-lock permission mode has been entered. The key-in lock system according to claim 1 or 2. When a key-in unlocking operation is received from outside the vehicle, it is confirmed whether or not the electronic key exists in the vehicle. When the electronic key is present, the user is prompted to enter a password, and the input password And an unlock release unit that performs password authentication by comparing the password selected according to the location of the electronic key and releases the key lock on condition that the password authentication is established. The key-in lock system according to any one of claims 1 to 3. The sensor unit is disposed at a position operable from outside the vehicle and has a sensitivity difference on the detection surface, and the sensitivity difference is provided with a sensor unit associated with each value of the password,
The key unlock system according to claim 4, wherein the unlock release unit captures an input password based on a detection signal input from the sensor unit.