WO2019208591A1

WO2019208591A1 - Start switch device

Info

Publication number: WO2019208591A1
Application number: PCT/JP2019/017296
Authority: WO
Inventors: 里仁大脇; 洋介大橋; 吉川　文崇; 直幸 ▲高▼田; 雄哉後藤; 恭久太田; 小川　大輔
Original assignee: 株式会社東海理化電機製作所; トヨタ自動車株式会社
Priority date: 2018-04-25
Filing date: 2019-04-23
Publication date: 2019-10-31
Also published as: JP2019189017A; JP6694467B2

Abstract

A start switch device 1 comprises: a switch unit 14 that receives a push operation performed on an operation surface 12; a biological information sensor 2 that reads biological information S1 of a user who has touched a read surface 20 which is exposed on the operation surface 12; and a control unit 16 that deactivates detection of a push operation of the switch unit 14 for a certain period of time, after a vehicle drive device 90 starts following achievement of confirmation of the biological data S1 on the basis of the touching of the read surface 20, and that, while the drive device 90 is starting following the foregoing, does not deactivate the switch unit 14 even if the biological information sensor 2 detects a re-touch operation and stops the drive device 90 upon detection of a push operation.

Description

Start switch device

Cross-reference of related applications

This application claims the priority of Japanese Patent Application No. 2018-083982 filed on April 25, 2018, and the entire contents of Japanese Patent Application No. 2018-2018-083982 are referred to this application. Incorporated by

The present invention relates to a start switch device.

A start switch for instructing start and stop of the drive source, a start unit for starting the drive source, a fingerprint sensor for reading a fingerprint, and a start process for controlling the operation of the start unit based on an input from the fingerprint sensor and the start switch There is known a start control device including a control means for executing (see, for example, Patent Document 1).

When the start switch is pushed and the start is instructed, the control means of the start control device includes a fingerprint read by the fingerprint sensor and a pre-registered registered fingerprint before starting the start by the start means. When the fingerprint is collated and the coincidence is determined, the user is authenticated as a valid user and the start by the starting means is permitted.

JP 2008-174095 A

The start control device disclosed in Patent Document 1 is configured so that, for example, a start of the drive device is instructed by a touch, and a stop of the drive device and a power-off are instructed by a push operation. If the push operation is mistakenly performed, there is a possibility that a malfunction occurs in which the power supply of the vehicle is cut off.

The objective of this invention is providing the start switch apparatus which can suppress the malfunctioning by the operation which is not intended.

A start switch device according to an embodiment of the present invention includes a switch unit that receives a push operation performed on an operation surface, a biometric information sensor that reads biometric information of a user who has touched the reading surface exposed on the operation surface, and a touch on the reading surface. After the biometric information authentication is established and the vehicle drive device is started, the detection of the push operation of the switch unit is invalidated for a certain period of time, and then the biometric information sensor touches again while the drive device is started. And a control unit that stops the driving device when a push operation is detected without invalidating the switch unit even if detected.

According to one embodiment of the present invention, it is possible to provide a start switch device that suppresses malfunctions caused by unintended operations.

FIG. 1A is an explanatory diagram illustrating a start switch device according to an embodiment. FIG. 1B is a block diagram illustrating the start switch device according to the embodiment. FIG. 2 is an explanatory diagram for explaining the invalidation time and the mask time set by the start switch device according to the embodiment. FIG. 3 is a flowchart showing the operation of the start switch device according to the embodiment.

(Summary of embodiment)
The start switch device according to the embodiment is based on a switch unit that accepts a push operation performed on the operation surface, a biometric information sensor that reads biometric information of a user who has touched the reading surface exposed on the operation surface, and a touch on the reading surface. After the biometric information is authenticated and the vehicle drive device is started, the detection of the push operation of the switch unit is invalidated for a certain period of time, and then the biometric information sensor detects the touch again while the drive device is started. Even when the push operation is detected without invalidating the switch unit, the control unit stops the drive device.

Since this start switch device invalidates the detection of the switch unit for a certain period of time after the drive device is started, it does not accept or intend even if a push operation is mistakenly performed at the time of touching, compared to the case where this configuration is not adopted. Malfunction due to operation can be suppressed.

[Embodiment]
(Outline of start switch device 1)
FIG. 1A is an explanatory diagram illustrating a start switch device according to the embodiment, and FIG. 1B is a block diagram illustrating the start switch device according to the embodiment. FIG. 2 is an explanatory diagram for explaining the invalidation time and the mask time set by the start switch device according to the embodiment. FIG. 2 shows timing waveforms of the biological information S ₁ , the push signal S _2, and the vehicle information S ₄ , and the biological information S ₁ includes touch ON (touch) and touch OFF (made by the biological information sensor 2). The touch transition to the biological information sensor 2 based on non-touch), the push signal S ₂ represents the push operation transition of the switch unit 14 based on ON and OFF of the switch unit 14, and the vehicle information S ₄ represents the start of the drive device 90. And the vehicle power supply transition based on ALLOFF indicating the stop of the driving device 90 and the interruption of the power supply.

In each figure according to the embodiment described below, the ratio between figures may be different from the actual ratio. In FIG. 1B, main signals and information flows are indicated by arrows. Furthermore, “A to B” indicating a numerical range is used in the meaning of A or more and B or less.

The start switch device 1 is a push switch for instructing start and stop of a vehicle drive device 90. For example, when the user carries a portable device (electronic key) registered in the vehicle and approaches the vehicle, ID authentication is performed between the portable device and the vehicle. When authentication is established, the user can unlock the vehicle door and get into the vehicle. At this time, start switch device 1, to authenticate the user's biometric information S ₁ following the authentication of the ID, and a standby state is supplied with power.

For example, as shown in FIGS. 1A and 1B, the start switch device 1 includes a switch unit 14 that accepts a push operation performed on the operation surface 12 and the biological information S of a user who has touched the reading surface 20 exposed on the operation surface 12. ₁ and the biometric information sensor 2 for reading a, after the authentication of the biological information S ₁ is the start-up driving device 90 of the vehicle established on the basis of the touch on the reading surface 20, to disable the detection of the push operation for a certain period of time the switch section 14 Then, while the driving device 90 is started, the control unit 16 stops the driving device 90 when a push operation is detected without invalidating the switch unit 14 even if the biological information sensor 2 detects a touch again. And having.

In the start switch device 1, when the user touches the reading surface 20 and the user is authenticated as a registrant, the vehicle drive device 90 is started. That is, the user can start the drive device 90 of the vehicle simply by touching the start switch device 1.

Specifically, when the drive device 90 is an internal combustion engine (engine), the engine is started by a push operation performed in a state where the operation conditions of the shift device and the brake device are satisfied. In the case where the driving device 90 is a motor, preparation for starting to supply current to the motor is performed by a push operation performed in a state where the above-described operation conditions are satisfied. Furthermore, when the drive device 90 is a hybrid of an engine and a motor, start-up or start-up preparation is performed corresponding to the drive device 90 that is prioritized at the start by a push operation performed in a state where the above-described operation conditions are satisfied. Note Information about the operating conditions, as an example, is provided from the vehicle as the vehicle information S _4.

The start switch device 1 includes, for example, a cylindrical main body 10 and an operation button 11 inserted into the opening 100 of the main body 10. The surface of the operation button 11 is an operation surface 12, and a rectangular reading surface 20 is exposed on the operation surface 12.

The start switch device 1 is disposed on, for example, a vehicle steering, a panel near the steering, a floor console positioned between a driver seat and a passenger seat.

(Configuration of biological information sensor 2)
Biometric information sensor 2, as an example, and is configured to read biometric information S ₁ operating finger in contact with the operation surface 12. The biometric information S ₁ is, for example, is information about the fingerprint pattern of the operation finger.

Note biometric information S ₁ is not limited to the fingerprint pattern of the operating finger, or the like vein pattern of the operation finger. As the biological information sensor 2, for example, when reading a fingerprint pattern, a sensor configured to read a fingerprint pattern such as an optical type, a capacitance type, an electric field strength measurement type, a pressure sensitive type, and a thermal type is used.

For example, when reading the vein pattern of the operation finger, the biological information sensor 2 is a sensor configured to read the vein pattern based on the reflected near infrared rays.

The biometric information sensor 2 uses, for example, a sensor configured to extract a fingerprint pattern and a vein pattern by performing image processing on an image captured by irradiating visible light when reading both a fingerprint pattern and a vein pattern. It is done.

The biometric information sensor 2 of the present embodiment is a capacitive sensor that reads a fingerprint pattern as an example. Biometric information sensor 2 outputs, for example, the biometric information S ₁ based on the capacitance was read control unit 16.

(Configuration of switch unit 14)
For example, the switch unit 14 is configured to be turned on based on a push operation performed on the operation button 11. The switch unit 14 (when a ON) when receiving a push operation, and outputs a push signal S _2. Control unit 16 acquires the push signal S _2, and outputs an instruction signal S ₃ indicating that interrupting the power supply to stop the driving device 90 of the vehicle. The operation button 11 is configured to return to the original position after the push operation.

(Configuration of control unit 16)
The control unit 16 includes, for example, a CPU (Central Processing Unit) that performs operations and processes on acquired data according to a stored program, a RAM (Random Access Memory) that is a semiconductor memory, a ROM (Read Only Memory), and the like. Is a microcomputer. In this ROM, for example, a program for operating the control unit 16, a template 160, and a similarity threshold 161 are stored. For example, the RAM is used as a storage area for temporarily storing calculation results and the like. Further, the control unit 16 has a means for generating a clock signal therein, and operates based on the clock signal and measures time.

Control unit 16, the time until the drive device 90 is stopped from the start, and is configured to invalidate the reading of biometric information S ₁ biometric information sensor 2. In addition, when the reading surface 20 is touched and the user is authenticated as a registrant, the control unit 16 masks the time from when the biometric information sensor 2 detects a touch until the touch is no longer detected as a fixed time. The time 162 is configured.

The control unit 16 determines, for example, the feature points of the biological information S ₁ read, when the template 160 is the similarity of the similarity threshold 161 or more, and the user is a registered person. More specifically, the control unit 16, for example, whether the user of a subscriber by performing extraction processing with respect to the stored template 160 biometric information S ₁ is compared with the extracted image feature points are extracted, non Determine if you are a registrant.

The feature points are, for example, a center point, a branch point, an end point, and a delta in the fingerprint pattern, but are not limited thereto. The center point is a point that becomes the center of the fingerprint pattern. A branch point is a point where the ridges of the fingerprint are branched. An end point is a point where a ridge is broken. A delta is a collection of ridges from three directions.

The control unit 16 calculates the similarity based on the position of the feature points, the distance between the feature points, and the like. And the control part 16 produces | generates the template 160 based on the extracted image of a registrant while producing | generating the extraction image which is the image of the extracted feature point.

As an example, the similarity threshold 161 is 80%. That is, for example, when the number of feature points used for authentication is 80, the control unit 16 determines that the user is a registrant if 64 or more feature points match.

Control unit 16, if the similarity between the extracted image and the template 160 of the biological information S ₁ read authentication becomes similarity threshold 161 or more is satisfied, the instruction signal S ₃ to start the drive unit 90 of the vehicle Is output.

As described above, the start switch device 1 can start the vehicle drive device 90 by touching the reading surface 20 if it is a registered user. However, if the user accidentally presses the operation button 11 when touching and the switch unit 14 is turned ON, there is a problem that ALLOFF including stop of the driving device 90 is instructed.

Therefore, when the reading surface 20 is touched and the user is authenticated as a registrant, the control unit 16 according to the present embodiment sets an invalidation time 163 for invalidating the biological information sensor 2 and the switch unit 14. The mask time 162 is set to invalidate the push operation for.

Specifically, for example, as illustrated in FIG. 2, the control unit 16 determines that the biological information sensor 2 is in a state of time t ₁ in a state where an operation condition for starting the driving device 90 is satisfied based on the vehicle information S _4. If the authentication of the biological information S ₁ is satisfied and detects a touch ON, during the time t ₁ to biometric information sensor 2 no longer detects a touch from the detection of the touch to the time t _3, the switch section 14 Disable it. This period is the mask time 162.

The control unit 16 until the time t ₆ to stop the drive device 90 from the time t _1, to disable the biometric information sensor 2. This period is the invalidation time 163. In the vehicle information S ₄ in FIG. 2, after the switch unit 14 has a certain time is operated at time t _5, the drive unit 90 is to stop at time t _6.

That is, the mask time 162 is a time from touch ON to touch OFF. The invalidation time 163 is the time from when the drive device 90 starts until it stops.

During this mask time 162, the control unit 16, for example, as indicated by a dotted line in a push signal _{S 2} in FIG. 2 does not switch the power supply state to ALLOFF even when the switch unit 14 is turned ON at time _{t 2.}

The control unit 16 is, for example, as shown in the biological information S ₁ in FIG. 2, also biometric information sensor 2 is a touch ON at time t _4, the time t ₄ invalidation time of the biological information sensor 2 163 since the inner, not disable the switch unit 14 as a trigger time t _4.

As a modification, the control unit 16 invalidates the push operation on the switch unit 14 with a predetermined period from the time when the reading surface 20 is touched and the user is authenticated as a registrant as a mask time 162. It may be configured.

An example of the operation of the start switch device 1 according to the present embodiment will be described below with reference to the flowchart of FIG. It is assumed that authentication performed between the user's portable device and the vehicle has been established.

(Operation)
The control unit 16 of the start switch device 1 monitors whether touch ON is detected based on the biological information S ₁ output from the biological information sensor 2. When “Yes” in Step 1 is established, that is, when touch ON is detected and authentication of the biological information S ₁ is established (Step 1: Yes), the control unit 16 uses the detected time as a trigger and the mask time 162 and invalidity. The conversion time 163 is set (Step 2).

Next, the control unit 16 is a touch OFF or monitored on the basis of the biometric information _{S 1.} When “Yes” in Step 3 is established, that is, when the touch is turned off (Step 3: Yes), the control unit 16 cancels the mask time 162 using the touch OFF as a trigger (Step 4).

Next, the control unit 16 monitors whether the push operation on the basis of the push signal S ₂ of the switch unit 14 is made. Control unit 16, "Yes" is established in step 5, that is, when the switch unit 14 a push operation is performed is ON (Step5: Yes), the driving device 90 outputs an instruction signal _{S 3} to stop, then invalid The conversion time 163 is canceled (Step 6).

(Effect of embodiment)
The start switch device 1 according to the present embodiment can suppress malfunctions caused by unintended operations. Specifically, since the start switch device 1 provides a mask time 162 after the start of the driving device 90 to invalidate the detection of the switch unit, it is erroneously pushed at the time of touching compared to the case where this configuration is not adopted. Even if the operation is performed, it is not accepted, and it is possible to suppress a malfunction such that the power state becomes ALLOFF by an unintended operation.

Since the start switch device 1 invalidates the biological information sensor 2 with the period from when the drive device 90 is started to when it is stopped as the invalidation time 163, the intention is within the invalidation time 163 after the mask time 162 is released. Even if the biological information sensor 2 is touched without being set, the mask time 162 is not set again with the touch as a trigger. Therefore, the start switch device 1 can instruct the drive device 90 to stop at a timing desired by the user, as compared with a case where this configuration is not adopted.

The start switch device 1 is configured to instruct start of the drive device 90 by touch and to instruct stop of the drive device 90 by a push operation. The start switch device 1 can realize this configuration while maintaining the same operability as a conventional start switch.

As mentioned above, although some embodiment and modification of this invention were demonstrated, these embodiment and modification are only examples, and do not limit the invention based on a claim. These novel embodiments and modifications can be implemented in various other forms, and various omissions, replacements, changes, and the like can be made without departing from the scope of the present invention. In addition, not all combinations of features described in these embodiments and modifications are necessarily essential to the means for solving the problems of the invention. Further, these embodiments and modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Start switch apparatus 2 Biological information sensor 12 Operation surface 14 Switch part 16 Control part 20 Reading surface 90 Drive apparatus 160 Template 161 Similarity threshold 162 Mask time 163 Invalidation time

Claims

A switch unit for accepting a push operation on the operation surface;
A biological information sensor that reads the biological information of the user who touched the reading surface exposed on the operation surface;
While the authentication of the biometric information is established based on the touch on the reading surface and the vehicle drive device is started, the detection of the push operation of the switch unit is invalidated for a certain period of time, and then the drive device is started A control unit that stops the driving device when a push operation is detected without invalidating the switch unit even when the biological information sensor detects a touch again,
Start switch device with
The biometric information sensor reads one or both selected from a fingerprint pattern and a vein pattern as the biometric information of the user.
The start switch device according to claim 1.
The biological information sensor is an optical, capacitance, electric field strength measurement, pressure sensitive, or thermal sensor that reads the fingerprint pattern.
The start switch device according to claim 2.
The biological information sensor is a sensor configured to read the vein pattern based on reflection of irradiated near infrared rays.
The start switch device according to claim 2.
The biometric information sensor is a sensor configured to perform image processing on an image captured by irradiating visible light and extract both the fingerprint pattern and the vein pattern.
The start switch device according to claim 2.
The control unit stores a template and a similarity threshold, respectively, and when the feature point of the biological information read by the biological information sensor and the similarity of the template are equal to or higher than the similarity threshold, Establishing authentication of the biometric information;
The start switch device according to any one of claims 1 to 5.
The control unit invalidates the reading of the biological information of the biological information sensor for a time from when the drive device is started to when it is stopped.
The start switch device according to any one of claims 1 to 6.
When the reading surface is touched and the user is authenticated as a registrant, the control unit sets the predetermined time from when the biometric information sensor detects a touch until no touch is detected.
The start switch device according to any one of claims 1 to 7.
When the reading surface is touched and the user is authenticated as a registrant, the control unit sets a predetermined period from the authenticated time as the predetermined time.
The start switch device according to any one of claims 1 to 7.
The switch unit, when receiving a push operation, stops the driving device of the vehicle and cuts off the power supply.
The start switch device according to any one of claims 1 to 9.