JP2022140041A - Vehicular seat driving system - Google Patents

Abstract

To provide a vehicular seat driving system that enables an occupant to move seat devices by a predetermined distance and can be manufactured at low costs.SOLUTION: A vehicular seat driving system comprises seat devices, supported on a floor of a vehicle, which can execute at least one specific operation, and an actuation control part that actuates the seat devices so that the seat devices execute the specific operation corresponding to unit movement amounts set for each specific operation, when receiving a prescribed command.SELECTED DRAWING: Figure 8

Description

The present invention relates to a vehicle seat drive system.

Patent Document 1 listed below discloses a vehicle seat drive system. This vehicle seat drive system includes a seat device, a voice acquisition unit that acquires a voice uttered by an occupant, a voice recognition unit that can recognize a voice command included in the voice acquired by the voice acquisition unit, and a seat device. A drive section capable of applying force and a drive control section controlling the drive section are provided.

For example, when the occupant issues a voice command for causing the seat device to perform a predetermined action, the voice recognition section recognizes this voice command. Further, the drive control unit fuzzy-controls the drive unit. As a result, the driving section applies a driving force to the seat device, and the seat device performs a predetermined operation.

JP-A-4-201745

In the above vehicle seat drive system, the drive control section fuzzy-controls the drive section. Therefore, it is not easy for an occupant who wishes to move the seat device by a predetermined distance to move the seat device by the specified distance by issuing a single voice command. That is, the occupant may have to issue multiple voice commands to move the seat apparatus that distance.

Furthermore, since the drive control section performs fuzzy control, the manufacturing cost for realizing the drive control section may increase.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle seat drive system that allows an occupant to easily move a seat device by a predetermined distance and that can be manufactured at a low cost.

According to a first aspect of the present invention, there is provided a vehicle seat driving system comprising: a seat device supported on a floor of a vehicle and capable of executing at least one specific operation; an operation control unit that operates the seat device so as to perform the specific operation by a set unit movement amount.

The seat device of the vehicle seat drive system according to claim 1 is supported on the floor of the vehicle and is capable of performing at least one specific operation. Further, the vehicle seat drive system has an operation control section that operates the seat device so as to perform a specific operation by a unit movement amount set for each specific operation when a predetermined command is received. In this manner, the seat device executes a specific motion by the unit movement amount set for each specific motion when receiving a predetermined command. Therefore, in the vehicle seat drive system according to claim 1, it is easy to move the seat device by a preset predetermined distance (unit movement amount).

Furthermore, the control performed by the actuation control is simple. Therefore, the vehicle seat drive system according to claim 1 can be realized at a low manufacturing cost.

According to a second aspect of the present invention, there is provided a vehicle seat driving system according to the first aspect, wherein the vehicle seat driving system comprises: A voice recognition unit capable of recognizing a voice command that is the command included in the acquired voice, a recording unit recording at least one voice command example, and the voice command recognized by the voice recognition unit is the voice. and a command determination unit that determines whether or not the command example matches the command example, wherein the command determination unit determines that the voice command recognized by the voice recognition unit matches the voice command example. Sometimes, the seat device is operated so as to perform the specific action by the unit movement amount.

In the vehicle seat drive system according to claim 2, the voice acquisition unit acquires the voice uttered by the vehicle occupant. Furthermore, the speech recognition section can recognize a speech command, which is a command included in the speech acquired by the speech acquisition section. Further, when the command determination unit determines that the voice command recognized by the voice recognition unit matches the voice command example, the operation control unit operates the seat device so as to perform the specific operation by the unit movement amount. Therefore, in the vehicle seat drive system according to claim 2, it is easy to move the seat device by a preset predetermined distance (unit movement amount).

According to a third aspect of the invention, there is provided a vehicle seat drive system according to the first or second aspect of the invention, wherein one of the specific operations is performed by moving the seat device relative to the floor in a predetermined manner. It is a slide operation that slides in a direction, and the unit movement amount of the slide operation is 7.0 to 23.0 mm.

In the vehicle seat drive system according to claim 3, the seat device performs a sliding motion of sliding in a predetermined direction with respect to the floor as the specific motion. Furthermore, the unit movement amount of the slide operation is 7.0 to 23.0 mm. A sensory evaluation test revealed that the occupant (subject) seated on the seat device did not feel any discomfort or sense of discomfort when the seat device performed the sliding motion by the magnitude of this numerical value. Therefore, according to the vehicle seat drive system of claim 3, when the seat device is moved by the unit movement amount due to the sliding motion, the occupant is less likely to feel discomfort and discomfort.

According to a fourth aspect of the present invention, there is provided a vehicle seat drive system according to the third aspect, wherein one of the specific operations includes sliding the seat device in the vehicle forward direction with respect to the floor. Another specific operation is a rearward sliding operation in which the seat device slides in the vehicle rearward direction with respect to the floor, and the unit movement amount of the forward sliding operation is 7.0. 20.0 mm, and the unit movement amount of the backward sliding operation is 7.0 to 23.0 mm.

In the vehicle seat drive system according to claim 4, the seat device performs, as the specific operation, a forward sliding operation of sliding relative to the floor in the forward direction of the vehicle and a rearward sliding operation of sliding relative to the floor in the rearward direction of the vehicle. . Furthermore, the unit movement amount of the forward sliding action is 7.0 to 20.0 mm, and the unit moving amount of the backward sliding action is 7.0 to 23.0 mm. A sensory evaluation test revealed that the passenger (subject) seated on the seat device did not feel discomfort or discomfort when the seat device performed the forward sliding motion and the backward sliding motion by the magnitude of these numerical values. Therefore, according to the vehicle seat drive system of claim 4, when the seat device moves by the unit movement amount due to the forward sliding motion and the backward sliding motion, the occupant is less likely to feel discomfort and discomfort.

A vehicle seat drive system according to the invention of claim 5 is the vehicle seat drive system of any one of claims 1 to 4, wherein the seat device comprises a seat cushion and the seat cushion. and a seat back rotatably connected to the seat cushion, wherein one of the specific motions is a reclining motion in which the seat back rotates with respect to the seat cushion, wherein the unit movement in the rotational direction of the reclining motion is A unit rotation angle, which is the corresponding rotation angle, is 1.6 to 4.6 degrees.

In the vehicle seat drive system according to claim 5, the seat device executes, as the specific action, a reclining action in which the seat back rotates with respect to the seat cushion. Further, the unit rotation angle, which is the rotation angle corresponding to the unit movement amount in the rotation direction of the reclining motion, is 1.6 to 4.6 degrees. A sensory evaluation test revealed that the occupant (subject) seated on the seat device did not feel any discomfort or sense of incongruity when the seat device performed the reclining motion by the magnitude of this numerical value. Therefore, according to the vehicle seat drive system of claim 5, when the seat device is moved by the unit movement amount due to the reclining motion, the occupant is less likely to feel discomfort and discomfort.

According to a sixth aspect of the present invention, there is provided a vehicle seat drive system according to the fifth aspect, wherein one of the specific operations is to move the seat back toward the front of the vehicle with respect to the seat cushion. Another specific motion is a rearward reclining motion in which the seatback rotates toward the rear of the vehicle with respect to the seat cushion, and the unit rotation angle of the forward reclining motion is 2. .5 to 4.6 degrees, and the unit rotation angle of the backward reclining operation is 1.6 to 3.8 degrees.

In the vehicle seat driving system according to claim 6, the seat device performs, as the specific actions, a forward reclining action in which the seat back rotates in the vehicle forward direction with respect to the seat cushion and a seat back in which the seat back rotates in the vehicle rearward direction with respect to the seat cushion. Perform a rolling backward recline motion. Furthermore, the unit rotation angle of the forward reclining motion is 2.5 to 4.6 degrees, and the unit rotation angle of the rear reclining motion is 1.6 to 3.8 degrees. A sensory evaluation test revealed that the occupant (subject) seated on the seat device did not feel any discomfort or sense of discomfort when the seat device performed the forward reclining motion and the rearward reclining motion by the magnitude of these numerical values. Therefore, according to the vehicle seat drive system of claim 6, when the seat device moves by the unit movement amount due to the forward reclining motion and the rearward reclining motion, the occupant is less likely to feel discomfort and discomfort.

As described above, according to the vehicle seat drive system of the present invention, it is easy for the occupant to move the seat device by a predetermined distance, which can be realized at a low manufacturing cost.

1 is a schematic plan view of a vehicle provided with a vehicle seat drive system according to an embodiment of the present invention, omitting a roof; FIG. FIG. 2 is a schematic side view of a driver's seat (passenger seat) provided in the vehicle shown in FIG. 1; FIG. 3 is a schematic front view of the seatback and headrest of the driver's seat (passenger seat) shown in FIG. 2; 1 is a block diagram of a vehicle seat drive system; FIG. 3 is a schematic block diagram of a seat ECU; FIG. It is a figure showing the result of the sensory evaluation test regarding slide motion. It is a figure showing the result of the sensory evaluation test about reclining operation|movement. FIG. 4 is a diagram showing a voice command list recorded in a ROM of a seat ECU; FIG. 4 is a flowchart showing processing performed by a seat ECU; 4 is a flowchart showing processing performed by a seat ECU; It is a figure which shows the voice command list|wrist recorded on ROM of a modification.

1 to 10, a vehicle seat drive system 10 (hereinafter referred to as drive system 10) according to an embodiment of the present invention will be described below. Note that an arrow FR indicated appropriately in each figure indicates the front direction of the vehicle, an arrow UP indicates the upward direction of the vehicle, and an arrow LH indicates the left side in the vehicle left-right direction (vehicle width direction). Hereinafter, when simply using front-rear, left-right, and up-down directions, front-rear in the vehicle front-rear direction, left and right in the vehicle left-right direction (vehicle width direction), and up and down in the vehicle up-down direction are indicated.

As shown in FIG. 1, a right front seat (seat device) 16 and a left front seat (seat device) 18 are provided in a cabin 14A of a vehicle body 14 of a vehicle 12 in which the drive system 10 is mounted. there is The vehicle body 14 includes a vehicle door. A steering wheel 14D is provided on the right side of the instrument panel 14C. Therefore, in the following description, the right front seat 16 will be referred to as the driver's seat 16 and the left front seat 18 will be referred to as the passenger seat 18 . An occupant P1 is seated in the driver's seat 16, and an occupant P2 is seated in the passenger seat 18. - 特許庁

As shown in FIG. 2, the floor 14B of the passenger compartment 14A is provided with a slide rail device 20 that supports the driver's seat 16 and the front passenger's seat 18 so as to be slidable in the longitudinal direction. Each slide rail device 20 has a pair of left and right lower rails 21 fixed to the floor 14B and extending in the front-rear direction, and a pair of left and right upper rails 22 supported by the lower rails 21 so as to be slidable in the front-rear direction. The slide rail device 20 has a first actuator (operation control section) 24 consisting of an electric motor, and a power transmission mechanism (not shown). When the first actuator 24 rotates forward and generates driving force, this driving force is transmitted from the power transmission mechanism to the upper rail 22 , causing the upper rail 22 to slide forward with respect to the lower rail 21 . When the first actuator 24 generates driving force while rotating in reverse, this driving force is transmitted from the power transmission mechanism to the upper rails 22 , causing the upper rails 22 to slide rearward with respect to the lower rails 21 .

Each upper rail 22 of each slide rail device 20 is provided with a support member 26 . Seats 19 are supported by support members 26 of the driver's seat 16 and the passenger's seat 18, respectively. The seat 19 has a seat cushion 19A, a seat back 19B and a headrest 19C. A seat cushion 19A is fixed to the upper end portion of the support member 26 . A rear end portion of the seat cushion 19A and a lower end portion of the seat back 19B are rotatably connected via a reclining mechanism 30. As shown in FIG. Each reclining mechanism 30 is provided with a second actuator (operation control section) 32 . When the second actuator 32 generates a driving force while rotating forward, the driving force rotates the reclining mechanism 30 and the seat back 19B tilts with respect to the seat cushion 19A. In other words, the seat back 19B rotates forward relative to the seat cushion 19A. When the second actuator 32 generates a driving force while rotating in the reverse direction, the driving force rotates the reclining mechanism 30 and the seat back 19B is raised with respect to the seat cushion 19A. In other words, the seatback 19B rotates rearward relative to the seat cushion 19A.

As shown in FIGS. 2 and 3, the headrest 19C has a cushion portion 19C1 and a pair of left and right stays 19C2 whose upper ends are fixed to the cushion portion 19C1. The left and right stays 19C2 are supported by the upper end portion of the seat back 19B so as to be vertically slidable.

As shown in FIG. 1, a rear seat (seat device) 34 located behind the driver's seat 16 and the passenger's seat 18 is provided on the floor 14B. The rear seat 34 has a single seat cushion 34A, a single seat back 34B, and three headrests 34C. The dimensions of the seat cushion 34A and the seat back 34B in the vehicle width direction are substantially the same as the dimensions of the passenger compartment 14A in the vehicle width direction.

As shown in FIG. 4, the drive system 10 includes a first actuator 24, a second actuator 32, a seat ECU (Electronic Control Unit) 40, a microphone (voice acquisition unit) 42, a speaker 44, a memory position setting switch 46, a memory operation A switch 48 , a first operation button 50 , a second operation button 52 , a third operation button 54 , a fourth operation button 56 , a vehicle body ECU 58 and a car navigation system 60 are provided. First actuator 24 , second actuator 32 , microphone 42 , speaker 44 , memory position setting switch 46 , memory operation switch 48 , first operation button 50 , second operation button 52 , third operation button 54 and fourth operation button 56 are electrically connected to the seat ECU 40 . In addition to the first actuator 24 and the second actuator 32, the driver's seat 16 and the passenger's seat 18 include a seat ECU 40, a microphone 42, a speaker 44, a memory position setting switch 46, a memory operation switch 48, a first operation button 50, a second An operating button 52 , a third operating button 54 and a fourth operating button 56 are provided. A car navigation system 60 is provided on the vehicle body 14 . The car navigation system 60 has a touch panel display (not shown).

A vehicle body ECU 58 is provided on the vehicle body 14 . A car navigation system 60 is electrically connected to the vehicle body ECU 58 . The seat ECU 40 and the vehicle body ECU 58 are connected via an in-vehicle network (not shown) so as to be able to exchange data (communicate) with each other.

As shown in FIG. 5, the seat ECU 40 includes a CPU (Central Processing Unit) 40A, a ROM (Read Only Memory) (recording unit) 40B, a RAM (Random Access Memory) 40C, a storage 40D, a communication I/F (inter Face) 40E and an input/output I/F 40F. The CPU 40A, ROM 40B, RAM 40C, storage 40D, communication I/F 40E and input/output I/F 40F are communicably connected to each other via a bus 40Z. The ECU 40 can acquire information about date and time from a timer (not shown). The basic configuration of the vehicle body ECU 58 is substantially the same as that of the seat ECU 40 .

The CPU 40A is a central processing unit that executes various programs and controls each section. That is, the CPU 40A reads a program from the ROM 40B or the storage 40D and executes the program using the RAM 40C as a work area. The CPU 40A performs control of each configuration and various arithmetic processing according to programs recorded in the ROM 40B or the storage 40D.

The ROM 40B stores various programs and various data. The RAM 40C temporarily stores programs or data as a work area. The storage 40D is configured by a storage device such as a HDD (Hard Disk Drive) or an SSD (Solid State Drive), and stores various programs and various data. Communication I/F 40E is an interface for seat ECU 40 to communicate with other devices. The input/output I/F 40F is an interface for communicating with various devices. For example, the input/output I/F 40F includes a first actuator 24, a second actuator 32, a microphone 42, a speaker 44, a memory position setting switch 46, a memory operation switch 48, a first operation button 50, a second operation button 52, a second A third operation button 54 and a fourth operation button 56 are connected.

The microphone 42 converts the voices uttered by the passengers P1 and P2 into electrical signals and transmits the electrical signals to the seat ECU 40 . As shown in FIG. 3, the microphone 42 is provided on the lower surface of the cushion portion 19C1. Therefore, the microphone 42 of the driver's seat 16 is positioned near the head P1a of the passenger P1 seated on the driver's seat 16, and the microphone 42 of the passenger's seat 18 is positioned near the head P2a of the passenger P2 seated on the passenger's seat 18. To position. Furthermore, the directivity of each microphone 42 is narrow. Specifically, the microphone 42 of the driver's seat 16 picks up only the sound of the area just in front of the seat 19 of the driver's seat 16, and the microphone 42 of the passenger's seat 18 picks up only the sound of the area just in front of the seat 19 of the passenger's seat 18. sound. Therefore, there is little possibility that the microphone 42 on the front passenger seat 18 will collect the voice uttered by the passenger P1. Similarly, there is little possibility that the microphone 42 in the driver's seat 16 will pick up the voice uttered by the passenger P2.

The speaker 44 can output sound. The speaker 44 is provided, for example, on the headrest 19C. The directivity of each speaker 44 is narrow. Therefore, it is easy for the passenger P1 to hear the sound output by the speaker 44 of the driver's seat 16, but it is difficult for the passenger P2 to hear the sound output by the speaker 44 of the driver's seat 16. Similarly, it is easy for the passenger P2 to hear the sound output by the speaker 44 of the passenger seat 18, and it is difficult for the passenger P1 to hear the sound output by the speaker 44 of the passenger seat 18.

When the seat 19 of the driver's seat 16 is at a predetermined sliding position with respect to the floor 14B and the seat back 19B is at a predetermined reclining position with respect to the seat cushion 19A, when the occupant operates the memory position setting switch 46, these is recorded in ROM 40B as a memory location. A plurality of memory locations can be stored in the ROM 40B of the driver's seat 16. FIG. Similarly, the ROM 40B of the passenger seat 18 can also store multiple memory locations.

For example, assume that only one memory location is registered in the ROM 40B of the driver's seat 16 . When the occupant P1 operates the memory operation switch 48 with the slide position and reclining position of the driver's seat 16 deviated from the memory positions, the first actuator 24 and the second actuator 24 are operated by a later-described drive control unit (operation control unit) 415 of the seat ECU 40 . 2 actuators 32 are controlled. As a result, the slide rail device 20 and the reclining mechanism 30 operate until the sliding position and reclining position of the driver's seat 16 match the memory positions. Such operations of the driver's seat 16 and passenger's seat 18 are referred to as memory operations in the following description.

As shown in FIG. 4, the seat ECU 40 has a wakeup determination section 411, a voice recognition section 412, a command determination section 414, a drive control section 415, and a response control section 416 as functional configurations. The wakeup determination unit 411, the voice recognition unit 412, the command determination unit 414, the drive control unit 415, and the response control unit 416 are implemented by the CPU 40A reading and executing programs stored in the ROM 40B. Functions of the wakeup determination unit 411, the voice recognition unit 412, the command determination unit 414, the drive control unit 415, and the reply control unit 416 will be described later.

A voice command list 65 shown in FIG. 8 is recorded in the ROM 40B. The voice command list 65 defines voice command examples for causing the driver's seat 16 and passenger's seat 18 to perform at least one specific action using the driving force of at least one of the first actuator 24 and the second actuator 32 . The driver's seat 16 and passenger's seat 18 of this embodiment can perform four specific actions (forward sliding action, rearward sliding action, forward reclining action, and rearward reclining action). Voice command examples (character strings) defined in the voice command list 65 include first to fourth examples. Each voice command example (first example to fourth example) defined in the voice command list 65 corresponds to each of the four specific actions. The character string represented by the first example is "seat front", the character string represented by the second example is "seat back", the character string represented by the third example is "seat tilt", and the character string represented by the fourth example. The string is "raise sheet".

FIG. 6 is a box and whisker diagram showing the results of a sensory evaluation test when a seat device (not shown) having substantially the same configuration as the driver's seat 16 and passenger's seat 18 performs a sliding motion. Twenty-two subjects participated in this sensory evaluation test. The 22 included men and women. The shortest subject has a height of 150 cm and the tallest subject has a height of 190 cm. The weight of the lightest subject is 46 kg and the weight of the heaviest subject is 105 kg. The vertical axis in FIG. 6 represents the unit movement amount of the slide motion. Here, the unit movement amount of the slide motion is the movement amount of one slide motion executed by the seat device based on the voice command list 65 . Each ◯ (circle) in FIG. 6 represents the unit amount of movement for which each subject felt that discomfort and discomfort were difficult to feel. As is clear from FIG. 6, the preferred unit displacement for most subjects is 7.0 to 20.0 mm when a forward sliding motion is performed. Also, when a backward sliding motion is performed, the preferred unit displacement for many subjects is 7.0 to 23.0 mm.

As indicated by the voice command list 65, a unit movement amount is set for each two slide motions. As indicated by the voice command list 65, the unit movement amount of the forward sliding motion executed based on the first example is 12.0 mm. The unit movement amount of the backward sliding motion executed based on the second example is 15.0 mm.

FIG. 7 is a box-and-whisker diagram showing the results of a sensory evaluation test when the seat device performs a reclining motion. The above 22 people participated in this sensory evaluation test. The vertical axis in FIG. 7 represents the unit rotation angle of the reclining motion. Here, the unit rotation angle of the reclining motion is the rotation angle corresponding to the movement amount (unit movement amount) in the rotational direction of one reclining motion performed by the seat device based on the voice command list 65 . Each ◯ (circle) in FIG. 7 represents a unit rotation angle at which each subject hardly felt discomfort or discomfort. As is clear from FIG. 7, the preferred unit rotation angle for most subjects is 2.5 to 4.6 degrees when a forward reclining motion is performed. Also, when a backward reclining motion is performed, the preferred unit rotation angle for many subjects is 1.6 to 3.8°mm.

As shown in the voice command list 65, a unit rotation angle is set for each two reclining motions. As indicated by the voice command list 65, the unit rotation angle of the forward reclining motion executed based on the third example is 2.7°. The unit rotation angle of the backward reclining motion executed based on the fourth example is 3.2°.

The first operation button 50 is a switch for causing the seat 19 to slide forward. That is, when the first operation button 50 is operated, the first actuator 24 rotates forward under the control of the drive control section 415 . The second operation button 52 is a switch for causing the seat 19 to slide backward. That is, when the second operation button 52 is operated, the first actuator 24 is reversed under the control of the drive control section 415 .

Further, when the time period during which the first operation button 50 is operated is less than the predetermined time period, the drive control unit 10 controls the seat 19 to slide forward by the unit movement amount (12.0 mm) defined by the voice command list 65. 415 controls the first actuator 24; Similarly, when the time period during which the second operation button 52 is operated is less than the predetermined time period, the seat 19 slides backward by the unit movement amount (15.0 mm) defined by the voice command list 65. A drive control unit 415 controls the first actuator 24 . This predetermined time is a very short time, such as 1.0 second. On the other hand, when the first operation button 50 and the second operation button 52 are continuously operated over the predetermined time or longer, the first actuator 24 continues to operate over the operating time.

The third operation button 54 is a switch for causing the seat 19 to recline forward. That is, when the third operation button 54 is operated, the second actuator 32 rotates forward under the control of the drive control section 415 . The fourth operation button 56 is a switch for causing the seat 19 to recline backward. That is, when the fourth operation button 56 is operated, the second actuator 32 is reversed under the control of the drive control section 415 .

Further, when the time period during which the third operation button 54 is operated is less than the predetermined time period, the seat 19 is driven to recline forward by the unit rotation angle (2.7°) specified by the voice command list 65 . A control unit 415 controls the second actuator 32 . Similarly, when the time period during which the fourth operation button 56 is operated is less than the predetermined time period, the seat 19 is caused to recline backward by the unit rotation angle (3.2°) defined by the voice command list 65. , the drive control unit 415 controls the second actuator 32 . On the other hand, when the third operation button 54 and the fourth operation button 56 are continuously operated over the predetermined time or longer, the second actuator 32 continues to operate over the operating time.

(Action and effect)
Next, the operation and effects of this embodiment will be described.

The seat ECU 40 of the drive system 10 for the driver's seat 16 and the front passenger's seat 18 repeatedly executes the processing of the flowchart of FIG. In the following description, the driver's seat 16 and the front passenger's seat 18 that are operated by performing the processing may be referred to as "front seats 16 and 18".

First, in step S10, the drive control unit 415 of the seat ECU 40 determines whether or not the memory operation switch 48 has been operated.

Having determined Yes in step S10, the seat ECU 40 proceeds to step S11, and the drive control unit 415 causes the front seats 16 and 18 to start the memory operation. That is, the drive control section 415 starts at least one of the first actuator 24 and the second actuator 32 .

After finishing the process of step S11, the seat ECU 40 proceeds to step S12 and sets the flag to "1". Note that the initial value of the flag is "0".

After finishing the processing of step S12, the seat ECU 40 proceeds to step S13, and the drive control unit 415 determines whether or not the slide position and reclining position of the front seats 16 and 18 have reached the memory positions. The drive control unit 415 repeats the process of step S13 until it determines Yes.

The seat ECU 40 that has determined Yes in step S13 proceeds to step S14. When the first actuator 24 is operating, the drive control section 415 sends a stop signal to the first actuator 24 . When the second actuator 32 is operating, the drive control section 415 sends a stop signal to the second actuator 32 .

After finishing the process of step S14, the seat ECU 40 proceeds to step S15 and sets the flag to "0".

When the process of step S15 is completed, or when the determination is No in step S10, the seat ECU 40 once ends the process of the flowchart of FIG.

Further, the seat ECU 40 repeatedly executes the processing of the flowchart of FIG.

First, in step S20, the drive control unit 415 determines whether the flag is 0 or not.

Having determined Yes in step S20, the seat ECU 40 proceeds to step S21 and determines whether or not at least one of the first operation button 50, the second operation button 52, the third operation button 54, and the fourth operation button 56 has been operated. . In other words, the drive control unit 415 determines whether or not an operation command (command) is received from at least one of the first operation button 50, the second operation button 52, the third operation button 54, and the fourth operation button 56. . At least one of the first operation button 50, the second operation button 52, the third operation button 54, and the fourth operation button 56 may be hereinafter referred to as an "operation button".

After determining Yes in step S21, the seat ECU 40 proceeds to step S22, and the drive control unit 415 determines whether or not the time during which the operation button has been operated is less than the predetermined time. That is, the drive control unit 415 determines whether or not the operation button is no longer operated within a time period shorter than a predetermined time after the operation button is operated.

The seat ECU 40 that has determined Yes in step S22 proceeds to step S23. For example, when the first operation button 50 is operated, the drive control unit 415 causes the front seats 16 and 18 to slide forward by the unit movement amount (12.0 mm) defined by the voice command list 65. 1 actuator 24 is controlled. When the second operation button 52 is operated, the drive control unit 415 is set to the first position so that the front seats 16 and 18 slide backward by the unit movement amount (15.0 mm) defined by the voice command list 65 . It controls the actuator 24 . When the third operation button 54 is operated, the drive control unit 415 causes the front seats 16 and 18 to recline forward by the unit rotation angle (2.7°) specified by the voice command list 65 . 2 Actuator 32 is controlled. When the fourth operation button 56 is operated, the drive control unit 415 causes the front seats 16 and 18 to recline backward by the unit rotation angle (3.2°) specified by the voice command list 65 . 2 Actuator 32 is controlled.

On the other hand, the seat ECU 40 that determined No in step S<b>22 proceeds to step S<b>24 , and the drive control unit 415 starts at least one of the first actuator 24 and the second actuator 32 .

After finishing the process of step S24, the seat ECU 40 proceeds to step S25 and determines whether or not the operation button is operated. The drive control unit 415 repeats the process of step S25 until it determines No.

The seat ECU 40 that determined No in step S25 proceeds to step S26. When the first actuator 24 is operating, the drive control section 415 sends a stop signal to the first actuator 24 . When the second actuator 32 is operating, the drive control section 415 sends a stop signal to the second actuator 32 .

On the other hand, the seat ECU 40 that determined No in step S21 proceeds to step S27, where the wake-up determination unit 411 of the seat ECU 40 performs voice recognition processing on the voice data transmitted from the microphone 42, and recognizes the character string (text) represented by the voice data. data). Further, when the wake-up determination unit 411 determines that the passengers P1 and P2 uttered the voice "wake up" based on this character string, it determines Yes in step S27. Note that the wakeup determination unit 411 and the voice recognition unit 412 described later perform voice recognition processing, for example, Japanese Patent Laid-Open Nos. 2019-090945, 2020-086203, 2020-101610, and It is well known as disclosed in JP 2019-176431 A and can be implemented with the contents disclosed in each of these publications.

The seat ECU 40 that has determined Yes in step S27 proceeds to step S28. When the seat ECU 40 proceeds to step S28, the voice recognition section 412 is set to an operable state. The speech recognition unit 412 set to the operable state generates a character string (text data) indicated by the speech data based on the speech data input from the microphone 42 . That is, the voice recognition unit 412 recognizes voice input from the microphone 42 .

In step S28, the command determination unit 414 determines whether each voice command example in the voice command list 65 is included in the character string (voice command) (command) generated by the voice recognition unit 412 from the voice data transmitted from the microphone 42. determine whether or not The seat ECU 40 repeats the process of step S28 until it determines Yes.

When determined as Yes in step S28, the seat ECU 40 proceeds to step S29, the response control unit 416 transmits audio data representing "system response" to the speaker 44, and causes the speaker 44 to output audio representing the system response. This system reply is the voice represented by each voice command example in the voice command list 65 determined to match in step S28. For example, if it is determined in step S28 that a character string matching the character string "before seat" represented by the first example of the voice command list 65 is included, the speaker 44 outputs the voice "before seat". do. For example, if it is determined in step S28 that a character string matching the character string "seat up" represented by the fourth example of the voice command list 65 is included, the speaker 44 outputs the voice "seat up". do.

However, if the "voice represented by each voice command example in the voice command list 65" output by the speaker 44 in step S28 is a voice (word) with the same meaning as the character string determined to match in step S28. , does not have to match the string. For example, if it is determined in step S28 that a character string matching the character string "front of seat" represented by the first example of the voice command list 65 is included, the speaker 44 outputs "move seat forward". You may output a voice saying "Let me start."

After finishing the processing of step S29, the seat ECU 40 proceeds to step S23, and the drive control unit 415 controls the first actuator 24 and the second actuator 24 so that the front seats 16 and 18 execute the specific operation indicated by the system response made in step S29. An actuation signal is sent to at least one of the two actuators 32 .

For example, in step S28, the character string generated by the speech recognition unit 412 from the speech data transmitted from the microphone 42 includes a character string that matches the character string "before seat" represented by the first example of the speech command list 65. Assume that it is determined that In this case, the drive control unit 415 controls the first actuator 24 so that the seat 19 slides forward by the unit movement amount (12.0 mm) specified by the voice command list 65 .

The seat ECU 40 temporarily terminates the processing of the flowchart of FIG. 10 when the processing of steps S23 and S26 is finished, or when it is determined No in step S20.

In the drive system 10 of this embodiment described above, the front seats 16 and 18 are set for each specific operation when the seat ECU 40 receives a predetermined command from the operation buttons or from the passengers P1 and P2 (voice recognition unit 412). A specific operation is executed by the unit movement amount (unit rotation angle). As such, the drive system 10 facilitates moving the front seats 16, 18 a predetermined predetermined distance.

Furthermore, the control executed by the drive control unit 415 is simple. As such, the drive system 10 can be realized at low manufacturing costs.

Furthermore, in the drive system 10, the unit movement amount (unit rotation angle) of the front seats 16 and 18 when receiving a predetermined command from the operation buttons or the passengers P1 and P2 (voice recognition unit 412) is the result of the sensory evaluation test. is set based on That is, the unit movement amount (unit rotation angle) of the front seats 16 and 18 is such that the occupants P1 and P2 (subjects) seated in the front seats 16 and 18 are unlikely to feel discomfort and discomfort. Therefore, when the front seats 16 and 18 are moved by the unit movement amount due to the sliding motion, the occupants P1 and P2 are less likely to feel discomfort and discomfort. In addition, when the front seats 16 and 18 are rotated by the unit rotation angle due to the reclining motion, the passengers P1 and P2 are less likely to feel discomfort and discomfort.

Further, in drive system 10 , microphones 42 are provided in driver's seat 16 and passenger's seat 18 . Therefore, for example, when the passenger P1 issues a voice command for causing the driver's seat 16 to perform a specific action, the microphone 42 on the front passenger seat 18 may recognize this voice command and the front passenger seat 18 may perform the specific action. small. Therefore, in such a case, the passenger's seat 18 is less likely to move against the will of the occupant P2.

Further, in the drive system 10, the front seats 16, 18 may perform prior to at least one of the first actuator 24 and the second actuator 32 applying a driving force to the front seats 16, 18 based on the voice commands of the occupants P1, P2. A speaker 44 emits a sound representing the particular action being attempted. Therefore, the passengers P1 and P2 who have heard this voice recognize that the front seats 16 and 18 will perform a predetermined action from now on. Therefore, when the front seats 16 and 18 perform predetermined actions, the occupants P1 and P2 are less likely to feel discomfort.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments.

FIG. 11 shows a modified voice command list 70 . In this voice command list 70, two voice command examples are set for one specific action. For example, the voice command examples representing the forward sliding motion in the voice command list 70 are two examples, namely Example 1-1 and Example 1-2. The character string represented by Example 1-1 is "sheet front 1", and the character string represented by Example 1-2 is "sheet front 2". Furthermore, the unit movement amount in Example 1-1 is 12.0 mm, and the unit movement amount in Example 1-2 is 7.0 mm. There are two voice command examples representing the backward sliding motion of the voice command list 70, namely Example 2-1 and Example 2-2. The character string represented by Example 2-1 is "seat back 1", and the character string represented by Example 2-2 is "seat back 2". Furthermore, the unit movement amount in Example 2-1 is 15.0 mm, and the unit movement amount in Example 2-2 is 23.0 mm. The voice command examples representing the forward reclining motion in the voice command list 70 are two examples, 3-1 example and 3-2 example. The character string represented by the 3-1 example is "sheet tilt 1", and the character string represented by the 3-2 example is "sheet tilt 2". The unit rotation angle in example 3-1 is 2.7°, and the unit rotation angle in example 3-2 is 2.5°. The voice command examples representing the backward reclining motion in the voice command list 70 are two examples, namely Example 4-1 and Example 4-2. The character string represented by Example 4-1 is "Raise sheet 1", and the character string represented by Example 4-2 is "Raise sheet 2". The unit rotation angle in example 4-1 is 3.2°, and the unit rotation angle in example 4-2 is 1.6°.

Therefore, when the occupants P1 and P2 who wish to cause the front seats 16 and 18 to slide forward utter a voice command "seat front 1", the front seats 16 and 18 slide forward by 12.0 mm. do. On the other hand, when the occupants P1 and P2 who want to cause the front seats 16 and 18 to slide forward utter a voice command "seat front 2", the front seats 16 and 18 slide forward by 7.0 mm. do. Thus, in the drive system 10 of this modified example, the front seats 16, 18 can be caused to perform specific actions.

In addition, in the voice command list 70, three or more voice command examples may be set for each specific action.

The unit movement amount of the forward sliding movement and the unit movement amount of the rearward sliding movement may be any value within the range of 7.0 to 23.0 mm.

The unit movement amount of the forward sliding motion and the unit movement amount of the backward sliding motion may be values outside the range of 7.0 to 23.0 mm.

The unit movement amount of the forward sliding motion and the unit movement amount of the backward sliding motion may be the same value.

The unit rotation angle of the forward reclining motion and the unit rotation angle of the rear reclining motion may be any value within the range of 1.6° to 4.6°.

The unit rotation angle of the forward reclining motion and the unit rotation angle of the rear reclining motion may be values outside the range of 1.6 to 4.6 degrees.

The unit rotation angle for the forward reclining motion and the unit rotation angle for the rear reclining motion may be the same value.

The passenger may arbitrarily set the unit movement amount (unit rotation angle) for each specific action. For example, the display (touch panel) of the car navigation system 60 may be used so that the passenger can arbitrarily set the unit movement amount (unit rotation angle) for each specific action.

The drive system 10 may not include the first operating button 50 , the second operating button 52 , the third operating button 54 and the fourth operating button 56 .

At least one of the microphone 42 and the speaker 44 may be provided at a portion of the driver's seat 16 and the passenger's seat 18 other than the headrest 19C.

A microphone 42 may be provided on the vehicle body 14 . However, in this case, a microphone 42 having a narrower directivity than the microphone 42 provided in the seat device and capable of easily acquiring only the voice uttered by the occupant P1, and a microphone 42 having a narrower directivity than the microphone 42 provided in the seat device and allowing the occupant It is preferable to provide the vehicle body 14 with a microphone 42 that can easily acquire only the voice uttered by P2.

A wake-up switch (not shown) may be provided in the vehicle 12 . In this case, when the wake-up switch is operated, the seat ECU 40 determines Yes in step S27.

The present invention may be applied to the rear seat 34 as well. In this case, the rear seat 34 includes at least one of a slide rail device and a reclining mechanism as a movable portion driven by an actuator.

When at least one of the driver's seat 16, passenger's seat 18, and rear seat 34 has at least one of a slide rail device, a lifter mechanism, a reclining mechanism, and an ottoman as a movable part, and the seat ECU 40 receives a predetermined command. Alternatively, each movable portion may be operated by a predetermined unit movement amount (unit rotation angle).

10 Vehicle seat drive system (drive system)
12 Vehicle 14B Floor 16 Front seat (driver's seat) (seat device)
18 Front seat (passenger seat) (seat device)
19A seat cushion 19B seat back 24 first actuator (operation control section)
32 second actuator (operation control unit)
34 Rear seat (seat device)
34A seat cushion 34B seat back 40B ROM (recording unit)
412 voice recognition unit 414 command determination unit 415 drive control unit (operation control unit)
42 microphone (voice acquisition unit)
65 voice command list (voice command example)
70 voice command list (voice command example)
P1 Crew P2 Crew

Claims (6)

a seat device supported on the floor of the vehicle and capable of performing at least one specific action;
an operation control unit that operates the seat device so as to perform the specific action by a unit movement amount set for each specific action when a predetermined command is received;
A vehicle seat drive system comprising: a voice acquisition unit that acquires a voice uttered by an occupant of the vehicle;
a voice recognition unit capable of recognizing a voice command, which is the command included in the voice acquired by the voice acquisition unit;
a recording unit in which at least one voice command example is recorded;
a command determination unit that determines whether the voice command recognized by the voice recognition unit matches the voice command example;
with
The operation control unit performs the specific operation by the unit movement amount when the command determination unit determines that the voice command recognized by the voice recognition unit matches the voice command example. 2. The vehicle seat drive system according to claim 1, which operates a seat device. one of the specific motions is a slide motion in which the seat device slides in a predetermined direction with respect to the floor;
3. The vehicle seat driving system according to claim 1, wherein the unit movement amount of the sliding operation is 7.0 to 23.0 mm. one of the specific motions is a forward sliding motion in which the seat device slides in the vehicle forward direction with respect to the floor;
another one of the specific actions is a backward sliding action in which the seat device slides in the vehicle rearward direction with respect to the floor,
The unit movement amount of the forward sliding operation is 7.0 to 20.0 mm,
4. The vehicle seat driving system according to claim 3, wherein said unit movement amount of said rearward sliding operation is 7.0 to 23.0 mm. The seat device
seat cushion and
a seat back rotatably connected to the seat cushion;
with
one of the specific actions is a reclining action in which the seat back rotates with respect to the seat cushion;
The vehicle according to any one of claims 1 to 4, wherein a unit rotation angle, which is a rotation angle corresponding to the unit movement amount in the rotation direction of the reclining operation, is 1.6 to 4.6 degrees. seat drive system. one of the specific actions is a forward reclining action in which the seat back rotates in the vehicle front direction with respect to the seat cushion;
another one of the specific actions is a rearward reclining action in which the seatback rotates in the vehicle rearward direction with respect to the seat cushion;
The unit rotation angle of the forward reclining motion is 2.5 to 4.6°,
6. The vehicle seat drive system according to claim 5, wherein the unit rotation angle of the rearward reclining motion is 1.6 to 3.8 degrees.

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