CN116071848A

CN116071848A - Door lock device

Info

Publication number: CN116071848A
Application number: CN202211320197.8A
Authority: CN
Inventors: 前田真吾; 山口翔吾
Original assignee: Tokai Rika Co Ltd
Current assignee: Tokai Rika Co Ltd
Priority date: 2021-10-29
Filing date: 2022-10-26
Publication date: 2023-05-05
Also published as: JP2023066911A

Abstract

A door lock device is provided with a plurality of electrodes provided in an operation unit, an electrostatic detection module, and a control device. The electrostatic detection module detects a user operation, which is an operation in which the body of the user touches or approaches the operation section, from a change in electrostatic capacitance in one or more of the plurality of electrodes to generate an operation detection notification. The control device controls at least one of locking and unlocking of the door based on a detection result of the electrostatic detection module. The wiring of the static electricity detection module that transmits the operation detection notification to the control device is constituted by only one line. The static electricity detection module transmits the operation detection notification to the control device via the wiring, regardless of which electrode detects the user operation.

Description

Door lock device

Technical Field

The present invention relates to a door lock device that controls an operation of a door lock based on a change in electrostatic capacitance of an electrode.

Background

Conventionally, the following intelligent systems have been mounted in many vehicles: when the key verification by wireless communication is established, the door is locked or unlocked when the door handle outside the vehicle door is touched by a finger, a hand, or the like (see japanese patent application laid-open No. 2010-216091). In such an intelligent system, a capacitance sensor is disposed on an outside door handle, and when a touch operation is detected by the capacitance sensor for locking, the door is locked, and when a touch operation is detected by the capacitance sensor for unlocking, the door is unlocked.

Disclosure of Invention

Problems to be solved by the invention

However, this type of capacitance sensor is provided with an IC (Integrated Circuit: integrated circuit) for determining the presence or absence of a touch operation based on a change in capacitance of an electrode. The IC outputs a detection result of the touch operation to the ECU that performs locking or unlocking of the door via wiring in the vehicle. For example, the IC outputs a detection signal of a touch operation detected based on a change in the capacitance of the locking electrode to the vehicle ECU (Electronic Control Unit: electronic control unit) via the locking wiring. The IC outputs a detection signal of a touch operation detected based on a change in capacitance of the unlocking electrode to the vehicle ECU via the unlocking wiring. The vehicle ECU performs locking or unlocking of the vehicle door based on respective detection signals input from the IC via the wiring.

In this way, when the outside door handle is provided with two electrodes for locking and unlocking, wiring for connecting the IC of the outside door handle and the vehicle ECU is required for locking and unlocking, respectively. Therefore, there is a possibility that the processing of wiring becomes troublesome or the cost of the component increases. Therefore, there is a need to minimize the number of wiring lines.

Means for solving the problems

A door lock device according to an embodiment comprises: a plurality of electrodes provided to the operation unit; an electrostatic detection module that detects a user operation, which is an operation in which a user's body touches or approaches the operation section, from a change in electrostatic capacitance among one or more of the plurality of electrodes, to generate an operation detection notification; and a control device for controlling at least one of locking and unlocking of the door based on a detection result of the electrostatic detection module. The wiring of the static electricity detection module that transmits the operation detection notification to the control device is constituted by only one line. The static electricity detection module transmits the operation detection notification to the control device via the wiring, regardless of which electrode detects the user operation.

Effects of the invention

According to the present invention, the number of wiring lines can be reduced in the door lock device.

Drawings

Fig. 1 is a configuration diagram of the whole system including a door lock device according to an embodiment.

Fig. 2 is a schematic diagram of a digital key system.

Fig. 3 is a perspective view of the door handle outside the vehicle as seen from the front surface side.

Fig. 4 is a perspective view of the door handle outside the vehicle as seen from the rear surface side.

Fig. 5A is an operation diagram when the 1 st electrode is touched and fig. 5B is an operation diagram when the 2 nd electrode is touched.

Detailed Description

An embodiment of the door lock device will be described below.

[ integral System construction ]

As shown in fig. 1, a user product 1 includes a key system 3, and the key system 3 authenticates a key 2 carried by a user by wireless communication. The key system 3 permits or executes the operation of the mounting device 4 of the use object 1 based on the authentication result of the key 2. The key system 3 includes an intelligent system that performs authentication of the key 2 with communication from the utility 1 as a trigger. The utility 1 is, for example, a vehicle 5. The key 2 includes an electronic key having a key function.

In the case of the intelligent system, radio waves using an LF (Low Frequency) band are transmitted from the object 1 to the key 2, and radio waves using a UHF (Ultra High Frequency: ultra high Frequency) band are transmitted from the key 2 to the object 1. That is, in the case of the smart system, when the key 2 enters a communication area formed by electric waves of the LF band around the utility 1, authentication communication of the key 2 by LF-UHF communication is performed between the utility 1 and the key 2.

The key system 3 includes a control device 8, and the control device 8 performs authentication of the key 2. The control device 8 is a check ECU (Electronic Control Unit) for determining whether the key 2 is correct or not by ID check, for example. Authentication information Did of the key 2 registered in the user 1 is registered in a memory (not shown) of the control device 8. The authentication information Did is also registered in a memory (not shown) of the key 2. The authentication information Did includes, for example, an ID code separately assigned to the key 2 and an encryption key used in encrypted communication at the time of authentication of the key 2.

The control device 8 performs wireless communication with the key 2 via the communication unit 9, thereby performing authentication of the key 2. The communication unit 9 includes, for example, a transmission unit that transmits radio waves carrying information (authentication information Did, etc.) from the control device 8, and a reception unit that receives radio waves from the key 2. In the case where the object 1 has an indoor area that is separated from an outdoor area, the transmitting unit may include an outdoor transmitting unit that transmits radio waves to the outdoor area and an indoor transmitting unit that transmits radio waves to the indoor area. The control device 8 confirms the authentication information Did of the key 2 by wireless communication, thereby determining whether the key 2 is correct or not.

The control device 8 is connected to the mounting device 4 via a communication line 10 provided to the object 1. Examples of the mounting device 4 include a door lock control device, a steering wheel locking device, and an engine control device that control the operation of the door lock 12 for locking and unlocking the door 11. The communication line 10 comprises, for example, CAN (Controller Area Network: controller area network) and/or LIN (Local Interconnect Network: local area internet).

In the case of the intelligent system, the control device 8 periodically transmits an LF band radio wave from the communication unit 9, and monitors whether the key 2 is present. When receiving the radio wave transmitted from the communication unit 9, the key 2 transmits a response with the radio wave in the UHF band. When communication (intelligent communication) between the key 2 and the control device 8 is established, the control device 8 performs verification (intelligent verification) to confirm the authentication information Did of the key 2. When the key 2 is authenticated by the authentication information Did, the control device 8 permits or executes the operation of the mounting device 4.

The control device 8 permits locking or unlocking of the door 11 when the smart check (outdoor smart check) is established based on the authentication information Did returned from the key 2 in response to the radio wave transmitted from the outdoor transmission unit of the communication unit 9. Therefore, if the normal key 2 is present in the outdoor area, the locking or unlocking operation of the door lock 12 is permitted. In this way, the control device 8 sets the establishment of the authentication of the key 2 as one condition for permitting the operation of the door lock 12. Further, the control device 8 permits the switching operation of the vehicle power supply when the smart check (indoor smart check) is established based on the authentication information Did returned from the key 2 in response to the radio wave transmitted from the indoor transmitter. Thus, the engine can be started.

As shown in fig. 2, the key system 3 includes, for example, a digital key system using the mobile terminal 15 as the key 2. The mobile terminal 15 may be, for example, a high-performance mobile phone (multi-function terminal). The digital key system registers the digital key Dk in the mobile terminal 15, thereby using the mobile terminal 15 as a key of the user 1.

The digital key Dk may be, for example, a disposable key that is permitted to be used only once or for a certain period of time. The digital key Dk may be stored in the mobile terminal 15 by various means such as downloading from a server, acquiring from a master key (one of the plurality of keys 2) by wireless, or image reading of code information. Alternatively, the digital key Dk may be downloaded from an external device to the mobile terminal 15 on the market or may be written in advance at the time of marketing.

The control device 8 authenticates the mobile terminal 15 by short-range wireless communication. The near field communication may be either PAN (Personal Area Network: personal area network) communication or near field communication. Examples of the PAN communication include Bluetooth (registered trademark) communication, UWB (Ultra Wide Band) communication, wi-Fi (registered trademark) communication, and the like. An example of bluetooth communication is BLE (Bluetooth Low Energy: bluetooth low energy). An example of near field wireless communication is NFC (Near Field Communication), which is one of RFID.

In the case of the digital key system, the control device 8 periodically transmits a broadcast packet by short-range wireless communication from the communication unit 9, and monitors whether or not the mobile terminal 15 is present. When receiving the broadcast packet from the communication unit 9, the mobile terminal 15 performs a scanning process and transmits a connection request to the control device 8. Thereby, the short-range wireless communication between the control device 8 and the mobile terminal 15 is shifted to the communication connection state.

When the control device 8 shifts to a communication connection state with the mobile terminal 15, authentication of the mobile terminal 15 is performed. In this example, the mobile terminal 15 transmits the digital key Dk to the control apparatus 8 by short-range wireless communication. When receiving the digital key Dk from the mobile terminal 15, the control device 8 authenticates the digital key Dk. When the digital key Dk can be normally decoded and the authentication of the digital key Dk is successful, the control device 8 acquires, for example, a session key used for the subsequent short-range wireless communication, the ID of the mobile terminal 15, and the like during the validity period of the digital key Dk. These pieces of information are held in a memory (not shown) of the control device 8.

When the digital key Dk is authenticated, the control device 8 and the mobile terminal 15 enter an authentication completion state in which authentication is recognized as being established. The authentication completion state is a state in which both the control device 8 and the mobile terminal 15 know the shared session key and the ID of the mobile terminal 15. Thus, in the case of the vehicle 5, locking or unlocking operations of the door 11, unlocking of the steering wheel locking device, starting operations of the engine, and the like can be performed.

[ constitution of door Lock device 18 ]

As shown in fig. 1, the key system 3 includes a door lock device 18, and the door lock device 18 controls locking and unlocking of the door 11 based on a user operation on the utility 1. When detecting a user operation on the utility 1 in a state where authentication of the key 2 is established, the door lock device 18 performs locking or unlocking of the door 11. The door lock device 18 realizes a so-called smart entry function (registered trademark) of automatically performing locking or unlocking of the door 11 during boarding and disembarking even without operating the key 2.

In the smart entry function, for example, locking or unlocking of the door 11 is performed in response to a touch operation of the door handle 19 provided to the door 11. The locking or unlocking of the door 11 is performed, for example, in response to a predetermined position of the door handle 19 being touched by a finger or the door handle 19 being held by a hand. The door handle 19 is, for example, an outside door handle. The door lock device 18 may be configured to perform an intelligent access function in at least one of locking and unlocking of the door 11. In the present example, the door lock device 18 realizes the smart entry function both for locking and unlocking the door 11.

As shown in fig. 3 and 4, the door lock device 18 includes a plurality of electrodes 21 provided in the operation unit 20. In this example, the electrode 21 includes a 1 st electrode 22 and a 2 nd electrode 23. The plurality of electrodes 21 may each have a different size. In this example, the operation unit 20 is a door handle 19 that is operated when the door 11 is opened and closed.

The operation unit 20 includes a plurality of operation surfaces 24 provided at different positions from each other. In this example, the plurality of operation surfaces 24 includes a front surface 19a and a rear surface 19b that constitute the outer surface of the door handle 19. The plurality of electrodes 21 are each disposed on a different operation surface 24. In this example, the 1 st electrode 22 is disposed on the front surface 19a of the door handle 19, and the 2 nd electrode 23 is disposed on the rear surface 19b of the door handle 19.

The switching operation of locking or unlocking the door lock 12 is an operation of touching the 1 st electrode 22 strip on the front surface 19a of the door handle 19 or an operation of touching the 2 nd electrode 23 strip on the back surface 19b of the door handle 19. That is, the locking or unlocking of the door lock 12 is alternately switched based on the touch operation of the front surface 19a or the rear surface 19b of the door handle 19.

The door lock device 18 includes an operation detection unit that detects a user operation of the user's body contacting or approaching the operation unit 20. The operation detection unit may be any of a capacitive type, a resistive film type, an ultrasonic type, and an optical type. In fig. 1, the door lock device 18 includes, as an operation detection unit, an electrostatic detection module 27, and the electrostatic detection module 27 detects a user operation from a change in electrostatic capacitance in one or more of the plurality of electrodes 21. The electrostatic detection module 27 may also be a single chip IC (Integrated Circuit). In this example, the static electricity detection module 27 is disposed inside the door handle 19.

The static electricity detection module 27 includes: an electrostatic detection unit 28 that detects a change in electrostatic capacitance in the electrode 21; and a signal processing unit 29 for generating an operation detection notification Sk based on the detection signal of the electrostatic detection unit 28. The electrostatic detection unit 28 detects a change in electrostatic capacitance in each of the 1 st electrode 22 and the 2 nd electrode 23. The signal processing unit 29 generates an operation detection notification Sk for notifying a user operation (user operation has been performed) based on the detection signal of the electrostatic detection unit 28.

A wiring 30 is connected between the control device 8 and the static electricity detection module 27, and the wiring 30 is used to notify the control device 8 of the detection result of the static electricity detection module 27. In this example, the wiring 30 is constituted by only one line. The wiring 30 may be a pattern wiring provided on the substrate or may be a single wire.

The signal processing unit 29 (electrostatic detection module 27) transmits an operation detection notification Sk notifying the user of an operation to the control device 8 via the wiring 30. The operation detection notification Sk may be a pulse signal Spl composed of a combination of a high level and a low level, that is, a voltage signal having a predetermined pulse rectangle (rectangular wave).

The signal processing unit 29 (electrostatic detection module 27) transmits an operation detection notification Sk to the control device 8 every time a user operation is detected by any one of the 1 st electrode 22 and the 2 nd electrode 23. The control device 8 controls the operation of at least one (in this example, both) of locking and unlocking the door 11 based on the operation detection notification Sk (pulse signal Spl) received from the static electricity detection module 27 via the wiring 30.

Next, the operation of the door lock device 18 will be described.

As shown in fig. 5A, in the case where the user switches the locked or unlocked state of the door lock 12, a touch operation is performed on the door handle 19. At this time, the touch operation of the door handle 19 by the user may be either the touch operation of the front surface 19a of the door handle 19 or the touch operation of the rear surface 19b of the door handle 19.

For example, it is assumed that in the unlocked state of the door 11 (door lock 12), the user touches a predetermined position of the surface 19a of the door handle 19 with a tip of a finger or the like. The touch operation on the surface 19a of the door handle 19 is detected with the electrostatic capacitance change in the 1 st electrode 22. When detecting the change in the electrostatic capacitance in the 1 st electrode 22, the electrostatic detection module 27 recognizes that a user operation for locking or unlocking the switch door 11 is performed.

In this case, the signal processing unit 29 transmits an operation detection notification Sk notifying the user of the operation to the control device 8 via the wiring 30. The operation detection notification Sk is, for example, a pulse signal Spl whose high-level time width is set to a predetermined width.

When receiving the operation detection notification Sk from the static electricity detection module 27, the control device 8 permits switching of the door lock 12 on the condition that authentication of the key 2 is established. At this time, the control device 8 transmits a locking operation request for switching the door lock 12 from the unlocked state to the locked state to the mounting device 4 (door lock control device) via the communication line 10. This allows the door 11 (door lock 12) of the user 1 to be switched from the unlocked state to the locked state.

Further, it is assumed that after the door 11 is switched to the locked state, the user performs a touch operation again on the surface 19a of the door handle 19. When detecting the change in the capacitance of the 1 st electrode 22, the signal processing unit 29 transmits an operation detection notification Sk notifying that the user operation for locking or unlocking the switch door 11 has been performed to the control device 8 again via the wiring 30. The operation detection notification Sk is the same signal as the notification transmitted to the control device 8 when switching from the unlock state to the lock state.

When receiving the operation detection notification Sk from the static electricity detection module 27, the control device 8 permits switching of the door lock 12 on the condition that authentication of the key 2 is established. At this time, the control device 8 transmits an unlocking operation request for switching the door lock 12 from the locked state to the unlocked state to the mounting device 4 (door lock control device) via the communication line 10. Thereby, the door 11 (door lock 12) returns to the unlocked state. In this way, the locking or unlocking of the door lock 12 is alternately switched every time a touch operation is detected based on the change in the electrostatic capacitance in the 1 st electrode 22.

As shown in fig. 5B, assume that, for example, in an unlocked state of the door 11 (door lock 12), the user performs a touch operation in such a manner as to grasp the door handle 19. The touch operation on the back surface 19b of the door handle 19 is detected with the change in electrostatic capacitance in the 2 nd electrode 23. When detecting the change in the electrostatic capacitance in the 2 nd electrode 23, the electrostatic detection module 27 recognizes that the user operation of locking or unlocking the switch door 11 is performed.

In this case, the signal processing unit 29 transmits an operation detection notification Sk indicating a user operation to the control device 8 via the wiring 30. Therefore, the wiring 30 for transmitting the operation detection notification Sk when the touch operation is detected by the 2 nd electrode 23 is the same as the wiring 30 for transmitting the operation detection notification Sk when the touch operation is detected by the 1 st electrode 22. The operation detection notification Sk is the same signal when the 1 st electrode 22 detects a touch operation and when the 2 nd electrode 23 detects a touch operation.

In this way, the locking or unlocking can be switched by either a touch operation to the front surface 19a of the door handle 19 or a touch operation to the rear surface 19b of the door handle 19. Therefore, the locked or unlocked state of the door lock 12 is alternately switched every time a touch operation is detected by either one of the 1 st electrode 22 and the 2 nd electrode 23. Therefore, the door lock 12 can be switched to be locked or unlocked regardless of which of the front surface 19a and the rear surface 19b of the door handle 19 is contacted, and therefore, the convenience of the switching operation of the door lock 12 can be improved.

According to the door lock device 18 of the above embodiment, the following effects can be obtained.

(1) The door lock device 18 includes a control device 8, a plurality of electrodes 21, and an electrostatic detection module 27. The electrostatic detection module 27 detects a user operation, which is an operation in which the body of the user contacts or approaches the operation portion 20, from a change in electrostatic capacitance in any one of the plurality of electrodes 21. The control device 8 controls at least one of locking and unlocking of the door 11 based on the detection result of the user operation transmitted from the electrostatic detection module 27. The wiring 30 used for transmitting the detection result of the user operation from the electrostatic detection module 27 to the control device 8 is constituted by only one line. The electrostatic detection module 27 transmits an operation detection notification Sk notifying the user of the operation to the control device 8 via the same wiring 30, regardless of which electrode 21 detects the user operation.

According to this configuration, when any one of the plurality of electrodes 21 of the operation unit 20 detects a user operation, the operation detection notification Sk is transmitted from the electrostatic detection module 27 to the control device 8, and locking or unlocking of the door 11 is performed. Therefore, the operation can be performed more conveniently than in the case where only one part is detected for the user operation. In addition, no matter which electrode 21 detects the user operation, the same operation detection notification Sk is transmitted from the static electricity detection module 27 to the control device 8 via one wiring 30. In this way, the number of wirings 30 required for transmission of the operation detection notification Sk may be one. Therefore, the number of wirings 30 can be suppressed to be small.

(2) The control device 8 alternately switches locking and unlocking every time an operation detection notification Sk is received from the electrostatic detection module 27. According to this configuration, even when the door 11 is not locked or unlocked according to the user's intention, the user only needs to operate the same portion again, which contributes to improvement in the convenience of operation.

(3) The operation unit 20 includes a plurality of operation surfaces 24 arranged at different positions from each other. The plurality of electrodes 21 are each disposed on a different operation surface 24. According to this configuration, since one input operation is assigned to each operation surface 24, an operation error is less likely to occur.

(4) The operating unit 20 is a door handle 19 that is operated when the door 11 is opened and closed. According to this configuration, the door lock device 18 can determine whether or not a user has operated the door handle 19 based on the change in the capacitance of the electrode 21. Further, since the operation detection notification Sk indicating that the user has operated the door handle 19 is output from the door handle 19, the number of wirings 30 included in the constituent elements of the door lock device 18 can be suppressed to a small number.

(5) The plurality of electrodes 21 each have a different size. According to this configuration, an arbitrary electrode size can be appropriately set for each electrode 21.

(6) The control device 8 authenticates the key 2 of the door by wireless communication, and permits the operation of the door lock 12 on condition that the authentication of the key 2 is established. According to this configuration, when the normal key 2 is not present, the door lock 12 does not operate, and thus the safety of the operation of the door lock 12 can be improved.

Modification example

Note that this embodiment can be implemented with the following modifications. The present embodiment and the following modifications can be combined with each other within a range that is not technically contradictory.

The 1 st electrode 22 and the 2 nd electrode 23 are not limited to being connected to the electrostatic detection module 27 by different wires (electrical connection wires), but may be connected to the electrostatic detection module 27 by a common wire (electrical connection wires).

The electrostatic detection module 27 may detect the user operation from a change in electrostatic capacitance in one or more of the plurality of electrodes 21. Therefore, the electrostatic detection module 27 may determine that the user operation is performed when the electrostatic capacitance change occurs in the 1 st electrode 22 and the 2 nd electrode 23 at the same time.

The number of the electrodes 21 is not limited to two, but may be three or more.

The operation detection notification Sk may be an operation detection notification that notifies the lock operation or the unlock operation by, for example, a difference in the time width of the high level (or the low level) of the pulse signal Spl. Alternatively, the operation detection notification Sk may be an operation detection notification that notifies the lock operation or the unlock operation by a data string constructed by a combination of a high level and a low level, for example.

The 1 st electrode 22 and the 2 nd electrode 23 may be formed to have the same size.

The 1 st electrode 22 and the 2 nd electrode 23 may be disposed on the same operation surface 24.

The operation unit 20 is not limited to the door handle 19, and may be a member that is touched by a user when opening and closing the door 11.

The operation unit 20 is not limited to the components of the door 11. For example, a member other than the constituent elements of the door 11 may be disposed on a wall of a building or the like as the operation unit 20.

The door lock device 18 is not limited to the in-vehicle device, and may be used in other devices or systems.

The control device 8 and the static electricity detection module 27 may be configured by one or more processors operating in accordance with a computer program (software), or may be configured by a combination of such a processor and one or more dedicated hardware circuits such as an Application Specific Integrated Circuit (ASIC) that executes at least a part of various processes. The processor includes a CPU, a memory such as a RAM and a ROM, and the memory stores program codes or instructions configured to cause the CPU to execute processing. Memory (computer-readable media) includes all available media that can be accessed by a general purpose or special purpose computer. Alternatively, instead of a computer including the above-described processor, a processing circuit configured by one or more dedicated hardware circuits that perform all of the various processes may be used.

The control device 8 and the static electricity detection module 27 may each include an independent processor or a shared processor having a part of the functions shared with other devices or modules. Therefore, the control device 8 and the static electricity detection module 27 may be configured as independent functional blocks, one functional block, or one or more functional blocks having a part of the functions shared by other functional blocks.

The present disclosure is described in terms of the embodiments, but it should be understood that the present disclosure is not limited to the embodiments or constructions. The present disclosure also includes various modifications and equivalents. Moreover, various combinations or modes, and further combinations or modes including only a single element, more than that or less than that, are also within the scope or spirit of the present disclosure.

Description of the reference numerals

2: key, 3: key system, 8: control device, 11: door, 12: door lock, 19: door handle, 20: operation unit, 21: electrode, 22: 1 st electrode, 23: 2 nd electrode, 24: operation face, 27: static detection module, 30: wiring, sk: operation detection notification, spl: a pulse signal.

Claims

1. A door lock device is provided with:

a plurality of electrodes provided to the operation unit;

an electrostatic detection module that detects a user operation, which is an operation in which a user's body touches or approaches the operation section, from a change in electrostatic capacitance among one or more of the plurality of electrodes, to generate an operation detection notification; and

a control device based on the detection result of the electrostatic detection module, at least one of locking and unlocking of the door is controlled,

the wiring of the static electricity detection module for transmitting the operation detection notification to the control device is constituted by only one line,

the static electricity detection module transmits the operation detection notification to the control device via the wiring, regardless of which electrode detects the user operation.

2. The door lock apparatus according to claim 1, wherein,

the control device alternately switches locking and unlocking of the door every time the operation detection notification is received from the static electricity detection module.

3. The door-lock apparatus according to claim 1 or claim 2, wherein,

the operation part comprises a plurality of operation surfaces which are mutually arranged at different positions,

the plurality of electrodes are each disposed on a different one of the operation surfaces.

4. The door-lock apparatus according to claim 1 or claim 2, wherein,

the operating portion is a door handle that operates when the door is opened and closed.

5. The door-lock apparatus according to claim 1 or claim 2, wherein,

the plurality of electrodes are formed in respective different sizes.

6. The door-lock apparatus according to claim 1 or claim 2, wherein,

the control device authenticates a key of the door by wireless communication, and permits operation of the door lock on condition that authentication of the key is established.