JP7448864B2 - sheet - Google Patents

Description

The present invention relates to a seat that can identify the movements of a seated person.

2. Description of the Related Art Conventionally, there has been known a device in which a pressure sensor or the like is mounted on a driver's seat to estimate the fatigue state of a seated person and to move the seat based on the estimation result (Patent Document 1).

Japanese Patent Application Publication No. 2017-065504

By the way, conventional seats attempt to recover fatigue by moving the seat, but such passive movement cannot sufficiently recover fatigue. Rather, the inventors of the present application believed that by encouraging the seated person to exercise actively, they could not only effectively eliminate fatigue but also realize a more enjoyable journey. In addition, there is a problem of traveler's thrombosis occurring in long-distance vehicles such as airplanes and long-distance buses, but it is possible to prevent traveler's thrombosis by enjoying exercise in the vehicle. be.

Furthermore, by exercising while sitting in a seat other than a vehicle, it may be possible to provide a healthier lifestyle.

However, with conventional seats, it is not possible to specify the movements of the occupant, and it has not been possible to realize such an enjoyable seat.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a seat that can specify the movements of a seated person.

The present invention, which solves the above-mentioned problems, has a seat body, a sensor that acquires a measured value for identifying the motion of a seated person sitting on the seat body, and a sensor that is connected to the sensor so that the measured value can be acquired from the sensor. The seat includes a control section. The control section includes a motion instruction section that instructs the seated person to perform a predetermined motion, and a motion determination section that specifies the motion of the seated person based on the measured value from the sensor. After the instruction from the movement instruction unit, it is determined whether the seated person is performing a predetermined movement.

According to such a configuration, the control unit of the seat instructs the seated person to perform a movement using the movement instruction unit, and the movement determination unit instructs the seated person to perform a predetermined movement using the movement instruction unit. Determine whether or not the operation is being performed. Therefore, the seated person can actively make a movement and the seat can respond as to whether the movement is good or bad, making it possible to provide a seat that has an interactive relationship with the seated person.

In the seat described above, it is preferable that the sensor obtains a pressure value from a seated person sitting on the seat body as the measurement value.

According to such a configuration, by acquiring the pressure value from the seated person, the motion of the seated person can be specified with high accuracy.

In the above-described seat, the action instruction section may be configured to instruct the seated person to perform a predetermined action using at least one of sound, light, image, moving image, text, vibration, and heat/cold.

In the above-described seat, when the motion determining section determines that the seated person is not performing a predetermined motion, it is desirable that the motion instructing section instructs the seated person to perform the predetermined motion again.

According to such a configuration, active movement of the seated person can be encouraged.

In the above-described seat, when the motion determining section determines that the magnitude of the predetermined motion performed by the seated person is insufficient, the motion instruction section instructs the seated person to make the predetermined motion large. This is desirable.

According to such a configuration, the seated person can exercise greatly, increase the enjoyment of sitting, and provide a healthy lifestyle.

In the above-mentioned seat, if the motion determining section determines that the motion being performed by the seated person is different from the motion instructed by the motion instruction section, the motion instruction section notifies the seated person of the correct way to move. It is desirable to do so.

According to such a configuration, it is possible to encourage the seated person to exercise in a healthy manner. Further, when the seated person wants to perform some operation by motion, it is possible to prompt the seated person to perform an accurate operation.

According to the present invention, it becomes possible to specify the motion of a seated person.

Furthermore, it is possible to encourage active movement of the seated person, thereby increasing the enjoyment of sitting and providing a healthy lifestyle.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating the overall configuration of a system using a vehicle seat according to an embodiment. FIG. 3 is a diagram illustrating the configuration of each vehicle seat. It is a figure explaining arrangement of a sensor, (a) is a figure seen from the front of a seat back, and (b) is a figure seen a seat cushion from above. FIG. 3 is a cross-sectional view of the sheet explaining the arrangement of sensors. FIG. 1 is a block diagram illustrating the configuration of a vehicle seat and a system. It is a table explaining criteria for determining motion. This is an example of a movement list for a full body course. This is a message table when it is determined that it is not working. This is a message table when it is determined that the operation is insufficient. This is a message table when it is determined that the operation is different from the instruction. 3 is a flowchart illustrating an example of processing by a control unit. 3 is a flowchart of motion determination processing. It is a flowchart of processing for heel-up/foot-up determination (right). It is a flowchart of processing of body rotation determination (right). It is a flowchart of the process of determining whether the back muscles are stretched or the shoulder blades are pressed. This is an example of a menu screen. This is an example of a calf exercise screen. This is an example of a presentation screen when the motion is small. This is an example of a presentation screen when it is determined that the user is performing an action different from the instruction.

Next, one embodiment of the present invention will be described in detail with reference to the drawings as appropriate.
As shown in FIG. 1, a vehicle seat S as an example of the seat of the present invention is configured, for example, as a vehicle seat mounted on a vehicle CR. The vehicle seat S includes a seat body S0 and a control section 100. Vehicle CR is provided with four vehicle seats S, for example, two front seats and two rear seats. In the vehicle CR, a control unit 100 integrates information between these four vehicle seats S, operates them in cooperation, and communicates with a smartphone SP, which is an example of a terminal used by the seated person P. is provided.
In this way, in the vehicle CR, the system SYS of the vehicle seat S is configured by the control unit 100 and the plurality of seat bodies S0.

As shown in FIG. 2, the seat body S0 has a seat cushion S1 and a seat back S2. A plurality of pressure sensors PS1 to PS6 are provided under the skin of the seat cushion S1 and the seat back S2. The pressure sensors PS1 to PS6 are sensors that acquire measured values for identifying the motion of the seated person P sitting on the seat body S0. This is a sensor that obtains pressure values. The control unit 100 is connected to the pressure sensors PS1 to PS6 so as to be able to obtain pressure values from each of the pressure sensors PS1 to PS6.

Each pressure sensor PS1 to PS6 is provided in pairs symmetrically with respect to the left and right centers of the vehicle seat S.
Specifically, as shown in FIG. 3(b), the seat cushion S1 is provided with pressure sensors PS1 to PS3.

The pressure sensor PS1 is provided at a position corresponding to the lowest part of the seated person's P's ischial bones. At this position, the largest load is applied to the seated person P. The pressure sensor PS1 can be placed, for example, at a distance of 60 to 70 mm, for example 65 mm, from the left and right center C of the vehicle seat S.

The pressure sensor PS2 is arranged slightly in front of the pressure sensor PS1, for example, at a position 50 to 60 mm, for example, 55 mm ahead of the pressure sensor PS1, and 65 to 75 mm, for example, 70 mm to the left and right from the center C. Can be placed at a remote location. The pressure sensor PS1 and the pressure sensor PS2 are examples of first cushion sensors arranged at positions corresponding to the buttocks of the seated person P on the seat cushion S1. The first cushion sensor includes at least one right cushion sensor (pressure sensor PS1, PS2) and at least one left cushion sensor (pressure sensor PS1, PS2).

Both the pressure sensor PS1 and the pressure sensor PS2 are for measuring the pressure from the buttocks of the seated person P, and only one of them may be provided. Therefore, in the following description, for convenience, the pressure sensor PS1 and the pressure sensor PS2 are also referred to as the first cushion sensor SC1.

Pressure sensor PS3 is arranged at a large distance forward from pressure sensor PS1 and pressure sensor PS2. The pressure sensor PS3 is an example of a second cushion sensor located in front of the first cushion sensor SC1 in the seat cushion S1. In the following description, the pressure sensor PS3 is also referred to as the second cushion sensor SC2.

The pressure sensor PS3 is located under the thigh of the seated person P, and can measure the pressure value from the thigh of the seated person P. The pressure sensor PS3 is placed, for example, 110 to 130 mm, for example, 120 mm in front of the pressure sensor PS2 (175 mm in front of the pressure sensor PS1), and 65 to 75 mm, for example, 70 mm away from the center C to the left and right. Can be done.

As shown in FIG. 4, the second cushion sensor SC2 is desirably located 280 mm ahead of the position E1 along the seat surface S11 of the seat cushion S1 from the seat surface S21 of the seat back S2. Note that the first cushion sensor SC1 is located behind the position E1. The position E1 here is one when one ruler M11 of the L-shaped curved scale M1 is placed along the seat surface S11 of the seat cushion S1 and the other ruler M12 is placed against the seat surface S21 of the seat back S2. Measurement shall be made using the dimensions of ruler M11. If the shape of the seat back S2 (for example, lumbar support) can be adjusted, any shape may satisfy this requirement. By arranging the second cushion sensor SC2 at such a position, the second cushion sensor SC2 can satisfactorily detect the vertical movement of the thigh of the seated person P.

As shown in FIGS. 2 and 3(a), the seat back S2 is provided with pressure sensors PS4 to PS6. The pressure sensor PS4 is provided at a position corresponding to the back of the seated person's P waist. The pressure sensor PS4 can be placed, for example, at a distance of 45 to 55 mm, for example 50 mm, from the left and right center C of the vehicle seat S.

The pressure sensor PS5 is arranged slightly above the pressure sensor PS4, for example, at a position 70 to 80 mm above the pressure sensor PS4, for example, 75 mm away, and 85 to 95 mm, for example, 90 mm to the left and right from the center C. Can be placed at a remote location. The pressure sensor PS4 and the pressure sensor PS5 are examples of first back sensors arranged at the lower part of the seat back S2. The first back sensor includes at least one right back sensor (pressure sensor PS4, PS5) and at least one left back sensor (pressure sensor PS4, PS5).

Both the pressure sensor PS4 and the pressure sensor PS5 are for measuring the pressure from the lower back of the seated person P, and only one of them may be provided. Therefore, in the following description, for convenience, the pressure sensor PS4 and the pressure sensor PS5 are also referred to as the first back sensor SB1.

Pressure sensor PS6 is arranged at a large distance upward from pressure sensor PS4 and pressure sensor PS5. The pressure sensor PS6 is an example of a second back sensor disposed above the first back sensor SB1 in the seat back S2. In the following description, the pressure sensor PS6 is also referred to as the second back sensor SB2.

The pressure sensor PS6 is located corresponding to the upper back of the seated person P, and can measure the pressure value from the shoulder blade of the seated person P. The pressure sensor PS6 is placed, for example, 190 to 210 mm, for example, 200 mm above the pressure sensor PS5 (275 mm above the pressure sensor PS1), and 95 to 105 mm, for example, 100 mm away from the center C to the left and right. Can be done.

As shown in FIG. 4, the second back sensor SB2 is desirably located above a position E2, which is 300 mm above the seat surface S11 of the seat cushion S1 along the seat surface S21 of the seat back S2. Note that the first back sensor SB1 is located below the position E2. The position E2 here is one when one ruler M21 of the L-shaped curved scale M2 is placed along the seat surface S21 of the seat back S2 and the other ruler M22 is placed against the seat surface S11 of the seat cushion S1. Measurement shall be made using the dimensions of ruler M21. If the shape of the seat back S2 (for example, lumbar support) can be adjusted, any shape may satisfy this requirement. By arranging the second back sensor SB2 at such a position, the pressure from the shoulders of the seated person P can be detected by the second back sensor SB2.

In the following explanation, the pressure values acquired by pressure sensors PS1 to PS6 are referred to as P1 to P6, respectively, and the right and left pressure values are denoted by R and L, such as P1 _R and P1 _L , respectively. Indicate by letters. Note that the pressure sensors PS1 to PS6 are, for example, elements whose electrical resistance changes depending on external pressure, and the larger the pressure value, the higher (or lower) the voltage of the detection signal becomes. Therefore, the magnitude of the pressure value is actually compared based on the magnitude of the voltage value, but in this specification, for ease of understanding, the determination will be made based on the magnitude of the pressure value.

As shown in FIG. 5, the control section 100 includes a measured value acquisition section 110, a processing section 120, a communication section 130, and a storage section 190. The control unit 100 includes a CPU, ROM, RAM, rewritable nonvolatile memory, etc. (not shown), and each functional unit is realized by executing a program stored in advance.

A short-range communication device 3A that enables short-range wireless communication such as Bluetooth (registered trademark) or Wi-Fi (registered trademark) is connected to the control unit 100. The control unit 100 is capable of communicating with the smartphone SP via the communication unit 130 and the short-range communication device 3A, and provides predetermined screens and sounds to the smartphone SP in cooperation with an application installed on the smartphone SP. It is now possible to obtain data entered in SP.

The measurement value acquisition unit 110 has a function of acquiring pressure measurement values from each pressure sensor PS1 to PS6 at every fixed control cycle. The measured values acquired by the measured value acquisition section 110 are stored in the storage section 190 and used by the processing section 120. Note that the storage unit 190 is used to appropriately store data necessary for calculation, processing, and the like.

The processing unit 120 is a part that provides an exercise game to the seated person P via the smartphone SP, and executes the overall process of progressing the game according to a pre-stored program. The processing section 120 includes a motion instruction section 121 and a motion determination section 122.

The motion instruction section 121 is a section that instructs the seated person P to perform a predetermined motion. In this embodiment, the motion to be instructed is a motion stored in advance for each menu of the gymnastics game. For example, the gymnastics game menu includes a full body course and a lower body course, and the full body course is stored as an action list as shown in FIG. In the action list, the action order "No." is stored in association with the action code MC and the time [ms] for performing the action. For example, the first operation "No. 1" has the operation code MC "1R" and continues this for 1000ms, and the next operation "No. 2" has the operation code "1L" and continues this for 1000ms. It is memorized so that it continues. As shown in Figure 6, each movement code is ``1R'' and ``1L'' for raising the heel, ``2R'' and ``2L'' for raising the foot, ``3'' for stretching the back, ``4'' for pressing the shoulder blade, and ``4'' for pressing the shoulder blade. 5R" and "5L" mean upper body rotation. R and L in each code mean right and left movements, respectively. For example, "1R" means raising the heel of the right foot, and "5L" means turning (twisting) the upper body to the left. .
Note that in the operation list of FIG. 7, No. The operation code "0" in 301 means to do nothing. Moreover, "EOL" means the end of the operation list.

When instructing an action according to the action list, the action instruction unit 121 selects the number of the action list. The operation code MC and time are read out in ascending order and output to the smartphone SP application. Note that the smartphone SP app stores image data and audio data corresponding to this operation code MC, and outputs an image including text (including a changing image, that is, a video) to the smartphone SP screen, and , outputs operation instructions through music and voice (that is, sounds, lights, images, videos, and text) from the speaker of the smartphone SP.

Here, each operation will be explained.
A heel raise is an exercise in which you raise your heel off the floor. In the present invention, heel raising includes a calf exercise that uses the calves to raise the heel while keeping the toes on the floor, and a leg raising exercise that primarily uses the thigh muscles and iliopsoas muscles to also raise the toes from the floor. This is because all of these movements involve lifting the heel.
In the present embodiment, as an example, the motion instruction unit 121 instructs both the calf exercise and the leg-raising exercise separately, so the heel-raising exercise means only the calf exercise (heel-raising exercise in a narrow sense). That's it. For example, in an app, calf exercise may be expressed as "please raise your heels." However, if both the calf exercise and the leg-raising exercise are performed in a form that does not instruct (do not distinguish between them), the heel-raising exercise can also be called as including both the calf exercise and the leg-raising exercise (in a broad sense). heel raise exercise). Hereinafter, the heel-raising movement will be explained in a narrow sense or in a broad sense, with additional information as appropriate.

As mentioned above, the leg raising exercise is an exercise in which the legs are raised until they are off the floor.

Stretching the back muscles is an exercise in which the back muscles are stretched vertically and the back is moved away from the seat back S2.

The scapula pressing is an exercise of pressing the scapula against the seat back S2.

The upper body rotation is an exercise of rotating (twisting) the upper body to the right or left while sitting on the seat cushion S1, and is performed by turning the head to the side or backward. Twisting the upper body is done with the seat back S2 on. For example, when turning clockwise, the right shoulder touches the seat back S2 and the left shoulder floats above the seat back S2.

If the motion determining section 122 determines that the seated person P has not performed the predetermined motion instructed by the motion instructing section 121, the motion instructing section 121 instructs the seated person P to perform the predetermined motion again.
As will be described later, in this embodiment, when the motion determination unit 122 cannot specify the motion, the motion determination code MCJ indicating the motion determination result is set to 0. In this case, the smartphone SP instructs the user to perform a predetermined action (an action corresponding to the data read from the action list) again via the smartphone SP.

A message that the motion instruction section 121 outputs to the smartphone SP when the seated person P does not perform the predetermined motion instructed by the motion instruction section 121 is stored in the storage section 190. For example, as shown in FIG. 8, this message is stored in association with each operation code MC.

Further, when the motion determining section 122 determines that the magnitude of the predetermined motion performed by the seated person P is insufficient, the motion instruction section 121 instructs the seated person P to perform the predetermined motion in a large size. do.
As will be described later, in the present embodiment, the motion determining unit 122 sets the magnitude data MS indicating the magnitude of the motion to 2 if the motion is sufficient, 1 if the motion is insufficient, and 1 if there is no motion. is set to 0, so when the size data MS is 1, the movement instruction unit 121 instructs the seated person P to perform a predetermined movement in a large size via the smartphone SP.
A message that the movement instruction unit 121 outputs to the smartphone SP when the magnitude of the predetermined movement performed by the seated person P is insufficient is stored in the storage unit 190. For example, as shown in FIG. 9, this message is stored in association with each operation code MC.

Further, when the motion determining section 122 determines that the motion that the seated person is performing is different from the motion instructed by the motion instruction section, the motion instruction section 121 notifies the seated person P of the correct way to perform the motion. do.
In the present embodiment, if the instructed motion code MC and motion determination code MCJ do not match, the motion determination unit 122 notifies the seated person P of the correct manner of motion via the smartphone SP.

A message that the motion instruction section 121 outputs to the smartphone SP when the motion that the seated person P is performing is different from the motion instructed by the motion instruction section 121 is stored in the storage section 190. For example, as shown in FIG. 10, this message is stored in association with the combination of each operation code MC and each operation determination data.

The motion determination unit 122 determines the motion of the seated person P based on the outputs of at least two pressure sensors PS1 to PS6 among the first cushion sensor SC1, the second cushion sensor SC2, the first back sensor SB1, and the second back sensor SB2. configured to identify. The motion determining section 122 determines whether or not the seated person P is performing a predetermined motion after the motion instructing section 121 instructs the seated person to perform a predetermined motion.

FIG. 6 shows the operation criteria in detail in a table. Specifically, the motion determination unit 122 determines that the pressure value P2 of the pressure sensor PS2 of the first cushion sensor SC1 on the raised foot side increases with respect to each pressure value in the reference posture, and When the pressure value P3 of the pressure sensor PS3 of the second cushion sensor SC2 becomes small, it is determined that a heel-raising operation has been performed.

Here, the reference posture is a state in which the seated person P normally sits with his/her upper body on the backrest without raising his or her legs or twisting his or her upper body. The pressure values acquired by the pressure sensors PS1 to PS6 are stored in the storage unit 190. For the seated person P in the reference posture, a pressure value for an average adult may be stored, or a pressure value for each weight of the seated person P in the reference posture may be stored. Here, in order to simplify the explanation, it is assumed that one pressure value in a typical reference posture is stored, for example, the pressure value in the case of an average adult.

In addition, in FIG. 6, SC1 (PS2) is written using the value of pressure sensor PS2 of the two pressure sensors PS1 and PS2 (four sensors when left and right combined) of the first cushion sensor SC1. It means to judge. In this embodiment, for example, in the case of heel raising, the measured value of the pressure sensor PS2 is used as the first cushion sensor SC1, but the measured value of the pressure sensor PS1 may also be used. Similarly, in other operations, when determining the operation based on the measured value of the first cushion sensor SC1, the measured value of either of the two pressure sensors PS1 and PS2 may be used. Even when determining the operation based on the measured value of the first back sensor SB1, the measured value of either of the two pressure sensors PS4 and PS5 may be used.

The motion determination unit 122 determines the pressure value P2 of the pressure sensor PS2 of the first cushion sensor SC1 on the raised foot side and the pressure value of the pressure sensor PS4 of the first back sensor SB1 for each pressure value in the reference posture. When the pressure value P4 becomes large and the pressure value P3 of the second cushion sensor SC2 on the same left and right sides becomes small, it is determined that a foot-raising action has been performed. In the present embodiment, in order to further improve accuracy, the foot-raising motion is determined based on the condition that the pressure value P6 of the second back sensor SB2 on the opposite left and right sides has become small.

The motion determination unit 122 determines that the pressure value P1 of the pressure sensor PS1 of the first cushion sensor SC1 becomes large and the pressure value P5 of the pressure sensor PS5 of the first back sensor SB1 becomes small with respect to each pressure value in the reference posture. If this happens, it is determined that the action of stretching the back muscles has been performed. In this embodiment, in order to ensure accuracy, the motion of stretching the back muscles is determined based on the condition that the pressure value P6 of the second back sensor SB2 has become small.
Note that since there is no distinction between left and right when stretching the back, a pressure value that is the sum of the left pressure value and the right pressure value is used.

The motion determination unit 122 determines that the pressure value P1 of the pressure sensor PS1 of the first cushion sensor SC1 and the pressure value P6 of the second back sensor SB2 become larger than the respective pressure values in the reference posture, and the pressure value P1 of the pressure sensor PS1 of the first cushion sensor SC1 and the pressure value P6 of the second back sensor SB2 become larger. When the pressure value P4 of the pressure sensor PS4 becomes small, it is determined that an action of pressing the shoulder blade against the seat back S2 has been made.
Note that since there is no distinction between left and right in scapula pressing, a pressure value that is the sum of the left pressure value and the right pressure value is used.

The motion determination unit 122 determines the pressure value P1 _R of the pressure sensor PS1 of the first right cushion sensor SC1 and the pressure value P4 of the pressure sensor PS4 of the first right back sensor SB1 for each pressure value in the reference posture. When _R increases and the pressure value P4 _L of the pressure sensor PS4 of the left first back sensor SB1 and the pressure value P6 _L of the left second back sensor SB2 become smaller, the movement of turning the upper body to the right is performed. The pressure value P1 L of the pressure sensor PS1 of the first left cushion sensor SC1 and the pressure value P4 _L of the pressure sensor PS4 of the first left back sensor SB1 _increase , and the pressure of the first right back sensor SB1 increases. When the pressure value P4 _R of the sensor PS4 and the pressure value P6 _R of the second right back sensor SB2 become small, it is determined that an action of turning the upper body to the left has been made.

In the above determination, whether the pressure value has become larger or smaller than the reference posture can be determined by comparing it with each threshold value stored in advance in the storage unit 190. .

In addition, in each motion, the magnitude of the motion can be determined by comparing the pressure value with a predetermined threshold, and if the magnitude of the motion is sufficient, the motion determining section 122 uses the magnitude data. MS is set to 2, if insufficient, MS is set to 1, and if not operating, MS is set to 0.

Next, an example of the process of providing an exercise game by the control unit 100 will be described with reference to FIGS. 11 to 15.
As shown in FIG. 11, the processing unit 120 presents a gymnastics game menu screen to the smartphone SP (S11). On the menu screen, for example, as shown in FIG. 16, a "Full body course" button B01 and a "Lower body course" button B02 are presented as menus for in-vehicle gymnastics to prompt the seated person P to make a selection. The processing unit 120 determines whether a menu has been selected (whether a button press signal has been received) and waits until the menu is selected (S12, No).

When the seated person P presses button B01 or button B02 to select a menu (S12, Yes), the processing unit 120 reads the operation code MC from the operation list (S21), and the operation code MC is set to “EOL”. ” (S22). If the operation code MC is not "EOL" (S22, No), the operation instruction unit 121 outputs the read operation code and operation time to the smartphone SP as an operation instruction (S23). In accordance with this action instruction, the smartphone SP displays, for example, an instruction in the text "1. Calf exercise" and an image (moving image such as an animation) corresponding to the action code MC on the screen DSP, as shown in FIG. 17. , a voice from the speaker SPK gives an instruction such as "Raise your heel using your calves. Right, left, right...". At this time, it is preferable to output music with a rhythm corresponding to the movement time so that the seated person P can easily follow the rhythm. Here, in FIG. 17, as an example, a display of calf movement (heel-raising movement in a narrow sense) and an image of raising the right heel are displayed.

Then, the motion determining unit 122 determines the motion of the seated person P based on the pressure values obtained from the pressure sensors PS1 to PS6 (S100). In the motion determination process, as shown in FIG. 12, first, both the motion determination code MCJ and the size data MS are initialized to 0.

Then, heel-up/foot-up determination (right) (step S200) is processed.
In this determination, as shown in FIG. 13, first, it is determined whether the pressure value _P2R of the right pressure sensor PS2 is larger than the threshold value P2th1 (S201). If the pressure value _P2R is larger than the threshold P2th1 (S201, Yes), then it is determined whether the pressure value _P3R of the right pressure sensor PS3 is smaller than the threshold P3th (S202). If the pressure value _P3R is smaller than the threshold P3th (S201, Yes), the pressure under the right buttock is large and the pressure under the thigh is small, so in a broad sense, the right heel is raised. (the heel is raised regardless of whether the foot is on the floor). If it is determined No in step S201 or step S202, the heel raise or foot raise (in a narrow sense) is not performed, so step S200 is ended. At this time, both the motion determination code MCJ and the size data MS remain at 0.

After determining Yes in step S202, the operation determination unit 122 determines whether the pressure value _P4R of the right pressure sensor PS4 is larger than the threshold value P4th, and if it is larger (S203, Yes), It is determined whether the pressure value _P6L of the pressure sensor PS6 is smaller than the threshold value P6th (S204).
If the pressure value _P6L is smaller than the threshold value P6th (S204, Yes), by lifting the foot off the floor, the right lower back is pressed against the seat back S2, and the left shoulder is about to move away from the seat back S2. It can be determined that this is a leg raising exercise. Therefore, the motion determination code MCJ is set to 2R (right leg raising motion) (S212). On the other hand, if the determination is No in step S203 or step S204, it is considered that the foot has not left the floor, so the motion determination code MCJ is set to 1R (right heel raising motion) (S211).

After step S211 or step S212, the operation determination unit 122 determines whether the pressure value _P2R of the right pressure sensor PS2 is larger than the threshold value P2th2 (S220). Here, the threshold value P2th1 is a value for determining whether or not the user is exercising to the extent that the heel is raised at the minimum, and the threshold value P2th2 is a value for determining whether or not the heel is raised sufficiently. This is the value to judge. That is, P2th2 is larger than P2th1.

If the pressure value _P2R is larger than the threshold value P2th2 (S220, Yes), it is considered that the movement is sufficiently large, so the size data MS is set to 2 (S222). On the other hand, if the pressure value _P2R is not larger than the threshold value P2th2 (S220, No), the magnitude of the movement is considered to be insufficient, so the magnitude data MS is set to 1 (S221).

This completes step S200 of heel-up/foot-up determination (right), and returns to FIG. 12 to execute step S300 of heel-up/foot-up determination (left). Step S300 differs from step S200 in that only the right and left sides of the pressure values to be determined are reversed, so a description thereof will be omitted.

After step S300, step S400 of determining body rotation (right) is executed.
As shown in FIG. 14, first, it is determined whether the operation determination code MCJ is 0 (S401). If MCJ is not 0 (S401, No), since the motion has already been determined, step S400 ends.
If MCJ is 0 (S401, Yes), it is determined whether the pressure value _P1R of the right pressure sensor PS1 is larger than the threshold value P1th1 (S410). If the pressure value _P1R is larger than the threshold P1th1 (S410, Yes), it is further determined whether the pressure value _P4R of the right pressure sensor PS4 is larger than the threshold P4th1 (S411). If the pressure value P4 _R is larger than the threshold P4th1 (S411, Yes), it is further determined whether the pressure value P4 _L of the left pressure sensor PS4 is smaller than the threshold P4th2 (S412). Note that P4th2 is a smaller value than P4th1. If the pressure value _P4L is smaller than the threshold P4th2 (S412, Yes), it is further determined whether the pressure value _P6L of the left pressure sensor PS6 is smaller than the threshold P6th (S413). If the pressure value _P6L is smaller than the threshold P6th (S413, Yes), it is considered that the upper body is turning to the right, so the motion determination code MCJ is set to 5R (S420). On the other hand, if it is determined No in any of steps S410, S411, S412, and S413, it is considered that the upper body is not turned to the right, so the motion judgment code MCJ and the size data MS are not changed and step S400 is performed. end.

After setting the operation determination code MCJ to 5R, the operation determination unit 122 determines whether the pressure value _P1R is larger than the threshold value P1th2 (S430). Here, the threshold value P1th1 is a value for determining whether or not the user is performing an exercise that can be said to be rotating the upper body at the minimum, and the threshold value 1th2 is a value for determining whether or not the user is rotating the upper body sufficiently. This is the value used to determine whether or not. That is, P1th2 is larger than P1th1.

If the pressure value _P1R is larger than the threshold value P1th2 (S430, Yes), it is considered that the movement is sufficiently large, so the size data MS is set to 2 (S432). On the other hand, if the pressure value _P1R is not larger than the threshold value P1th2 (S430, No), the magnitude of the movement is considered to be insufficient, so the magnitude data MS is set to 1 (S431).

This completes step S400 for determining body rotation (right), and returns to FIG. 12 to execute step S500 for determining body rotation (left). Step S500 is different from step S400 in that only the right and left sides of the pressure values to be determined are reversed, so the explanation will be omitted.

After step S500, step S600 of determining whether the back muscles are stretched or the shoulder blades are pressed is executed.
As shown in FIG. 15, first, it is determined whether the operation determination code MCJ is 0 (S601). If MCJ is not 0 (S601, No), since the motion has already been determined, step S600 ends.
If MCJ is 0 (S601, Yes), it is determined whether the sum of the pressure value _P1R of the right pressure sensor PS1 and the pressure value _P1L of the left pressure sensor PS1 is larger than the threshold value P1th3 (S610). If the sum of the pressure value _P1R and the pressure value _P1L is not larger than the threshold value P1th3 (S610, No), it is considered that neither the back stretching nor the shoulder blade pressing is performed, and therefore step S600 is ended. In this case, both the motion determination code MCJ and the size data MS are 0, and it is determined that no motion is occurring. If the sum of the pressure value P1 _R and the pressure value P1 _L is larger than the threshold value P1th3 (S610, Yes), furthermore, the sum of the pressure value P6 _R of the right pressure sensor PS6 and the pressure value P6 _L of the left pressure sensor PS6 It is determined whether or not is larger than a threshold value P6th3 (S611).

If the sum of the pressure value _P6R of the right pressure sensor PS6 and the pressure value _P6L of the left pressure sensor PS6 is not greater than the threshold value P6th3 (S611, No), the shoulder blade is pressed against the seatback S2. Therefore, the motion determination unit 122 uses the pressure values P5 R , P5 _L of the left and right pressure sensors PS5 and the pressure values P6 _R , P6 _L of the left and right pressure sensors PS6 in order to determine whether the back muscles are _straightened . The sum of P56 is calculated (S620). Then, it is determined whether P56 is smaller than the threshold value P56th1 (S622). If P56 is not smaller than the threshold value P56th1 (S622, No), the upper body is not far enough from the seat back S2 to be able to say that the back is straightened, so the motion determination code MCJ and the size data MS are Step S600 ends without changing both values as 0.

On the other hand, in step S622, if P56 is smaller than the threshold value P56th1 (S622, Yes), the upper body is sufficiently separated from the seat back S2 to the extent that it can be said that the back is straightened, so the motion determination code MCJ is set to 3 (S623).
Then, the motion determining unit 122 determines whether P56 is smaller than the threshold value P56th2 (S625). Here, the threshold value P56th2 is a value smaller than P56th1. If P56 is not smaller than the threshold P56th2 (S625, No), the movement is insufficient because the back is slightly pushing the seat back S2, and the size data MS is set to 1 (S626). On the other hand, if P56 is smaller than the threshold value P56th2 (S625, Yes), the movement is sufficient because the back is sufficiently far from the seat back S2 or is hardly pressed, and the size data MS is set to 2. (S627). After step S626 and step S627, step S600 ends.

In step S611, if it is determined that the sum of the pressure value _P6R and the pressure value _P6L is larger than the threshold value P6th3 (S611, Yes), it can be said that the shoulder blade is pressed against the seatback S2, so the operation is performed. The determining unit 122 further determines whether the sum of the pressure value P4 _R of the right pressure sensor PS4 and the pressure value P4 _L of the left pressure sensor PS4 is smaller than the threshold value P4th3 (S630).
If the sum of the pressure value P4 _R and the pressure value P4 _L is not smaller than the threshold value P4th3 (S630, No), the entire back is pressed rather than the shoulder blades against the seat back S2, so the movement judgment code MCJ is generated. Step S600 is ended without changing both the size data MS and the size data MS as 0.

If the sum of the pressure value P4 _R and the pressure value P4 _L is smaller than the threshold value P4th3 (S630, Yes), it can be said that the shoulder blades are being pressed against the seat back S2 rather than the entire back, so the motion determination code MCJ is set. is set to 4 (S631).
Then, it is determined whether the sum of the pressure value P6 _R and the pressure value P6 _L is larger than the threshold value P6th4 (S632). The threshold value P6th4 is a value for determining whether it can be said that the shoulder blade is pressed against the seat back S2 sufficiently strongly, and is a value larger than the threshold value P6th3. If the sum of the pressure value P6 _R and the pressure value P6 _L is not larger than the threshold value P6th4 (S632, No), the force to press the shoulder blade against the seat back S2 is insufficient, so the size data MS is set to 1 (S633). , if the sum of the pressure value P6 _R and the pressure value P6 _L is larger than the threshold value P6th4 (S632, Yes), the force to press the shoulder blade against the seat back S2 is sufficient, so the size data MS is set to 2 (S634), In each case, step S600 ends. This completes step S100 of the motion determination.

Returning to FIG. 11, after the operation determination step S100, the operation instruction unit 121 determines whether the operation determination code MCJ is 0 or not, and if it is 0 (S30, Yes), outputs a message (S31). For example, as shown in FIG. 17, when the motion determination code MCJ is 0 during calf exercise, the motion instruction unit 121 refers to the message table of FIG. 8 and sets the motion code 1R. The corresponding message is read out and output to the smartphone SP. As a result, the speaker SPK of the smartphone SP outputs a message such as "Your feet are not moving. Use your calves to raise your heels." (See Figure 17).
After outputting the message, the operation instruction unit 121 returns to step S23 and instructs the user to perform a predetermined operation again.

If it is determined in step S30 that the motion determination code MCJ is not 0 (S30, No), the motion instruction unit 121 determines whether or not the motion determination code MCJ matches the motion code MC (S40). If the motion determination code MCJ matches the motion code MC (40, Yes), the motion determination unit 122 further determines whether or not the size data MS is 1 (S41). If the size data MS is not 1 (S41, No), that is, if the size data MS is 2, the seated person P is able to move as instructed, and the process returns to step S21 to instruct the next movement.

If it is determined in step S41 that the size data MS is 1 (S41, Yes), the size of the movement is insufficient, so the movement instruction unit 121 outputs a message to the smartphone SP to the effect that the movement should be made large. (S42). For example, if the magnitude of the calf exercise is insufficient, the message table in FIG. 9 is referred to, the message corresponding to the motion code 1L is read out, and the message is output to the smartphone SP. As a result, as shown in Figure 18, the speaker SPK of the smartphone SP outputs a message such as "It seems that you are raising your heel too little. Let's raise your heel higher. Right, left, right..." do. At this time, if an image of raising the heel higher than that shown in FIG. 17 is displayed on the screen DSP, it will be easier for the seated person P to understand what to do. After outputting the message, the process returns to step S21 to instruct the next operation.

In step S40, if it is determined that the motion determination code MCJ does not match the motion code MC (S40, No), the seated person P is performing a motion that is different from the instruction, and a message indicating the correct motion is output to the smartphone SP. (S43). For example, if it is determined that the heel is being raised during a leg raising exercise, that is, if the motion code MC is 2R and the motion determination code MCJ is 1R, from the message table in FIG. A message corresponding to the combination of MC being 2R and MJC being 1R is read out and output to the smartphone SP. As a result, as shown in FIG. 19, a message such as "Please raise your feet until they are off the floor. Right, left, right..." is output from the speaker SPK of the smartphone SP. After outputting the message, the process returns to step S21 to instruct the next operation.

After reading the operation code MC (S21), if the operation code MC is "EOL" (S22, Yes), the operation list is finished, so the end screen is presented to the smartphone SP, etc. ( S60 (not shown), the process ends.

As described above, according to the vehicle seat S of the present embodiment, the first cushion sensor SC1 and the second cushion sensor SC2 are spaced apart in the front and back on the seat cushion S1, and the first cushion sensor SC1 and the second cushion sensor SC2 are spaced apart in the vertical direction on the seat back S2. It is possible to specify the motion of the seated person P by a combination of pressure values from at least two of the at least four sensors, the back sensor SB1 and the second back sensor SB2.

Then, after the control unit 100 instructs the seated person to perform a movement using the movement instruction unit 121 and the movement determination unit 122 instructs the seated person to perform a predetermined movement by the movement instruction unit 121, the vehicle seat S It is possible to determine whether P is performing a predetermined action. Therefore, it becomes possible for the seated person P to actively move and the vehicle seat S to respond as to whether the movement is good or bad, thereby providing a seat that has an interactive relationship with the seated person P. becomes possible. As in the above embodiment, if the seated person P can be encouraged to move actively by providing gymnastics games or the like, fatigue can be effectively eliminated and a more enjoyable journey can be realized. . In particular, there is a problem of traveler's thrombosis occurring in long-distance vehicles such as airplanes and long-distance buses, but there is a possibility that traveler's thrombosis can be suppressed by enjoying exercise in the vehicle. be.

According to the vehicle seat S of this embodiment, by acquiring the pressure value from the seated person P, the motion of the seated person P can be specified with high accuracy.

If the motion determining section 122 determines that the seated person P is not performing the predetermined motion, the motion instruction section 121 instructs the seated person P to perform the predetermined motion again, thereby encouraging the seated person P to actively move. Can be done.

If the motion determining unit 122 determines that the magnitude of the predetermined motion performed by the seated person P is insufficient, the motion instruction unit 121 instructs the seated person P to perform the predetermined motion in a large size. Therefore, the seated person P can exercise greatly, increase the enjoyment of sitting, and provide a healthy lifestyle.

If the motion determining section 122 determines that the motion that the seated person P is performing is different from the motion instructed by the motion instruction section 121, the motion instruction section 121 instructs the seated person P in the correct way to move. Since the notification is given, the seated person P can be encouraged to exercise in a healthy manner. In addition, in the above embodiment, the explanation was given using a gymnastics game as an example, but when trying to have the seated person P operate the smartphone SP or other devices such as a navigation system, it is necessary to By notifying the user how to operate, it is possible to encourage accurate operation.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. The specific configuration can be modified as appropriate without departing from the spirit of the present invention.

For example, in the embodiment described above, the action instruction section instructs the seated person to perform a predetermined action using sound, light, images, moving images, and text, but may also instruct the seated person using vibration or heat/cold. Warming and cooling refers to stimulation of the seated person P with a warm or cold sensation, and can be stimulated by, for example, heating the seat surface with a heater or blowing air onto the seated person P with a blower. Note that in this specification, characters include Braille.

In the embodiment, each threshold value is constant, but the threshold value may not be constant. For example, if a seated person can be identified by the ID of a smartphone, a threshold value can be stored for each seated person, and the proficiency and habit of each seated person can be estimated and stored. The threshold value may be changed depending on the user's skill level and habits.

In the embodiment, the gymnastics game has been described as an example, but other games may also be provided. For example, it is possible to provide a training app (game-like) for achieving beautiful posture.

In the embodiment, the case where the control unit is a device different from the smartphone is illustrated, but the control unit may be configured by both the device provided in the seat or the vehicle and the smartphone. That is, part or all of the smartphone can be configured as a sheet.

In the embodiment, the control unit and the smartphone are connected by wireless communication, but they may be connected by wired communication.

In the embodiment described above, for stretching the back muscles where there is no distinction between left and right, the pressure value that is the sum of the left pressure value and the right pressure value is used, but the average value of the left pressure value and the right pressure value is used. Alternatively, you can determine whether the right pressure value and the left pressure value each satisfy the condition, and perform the operation if at least one or both satisfy the condition. It may be determined that there is.

Measurements other than pressure values can also be obtained to identify the movements of the seated person. For example, it is also possible to use a measurement value such as a capacitance sensor.

In the above embodiment, a seat mounted on a vehicle is illustrated as a vehicle seat, but the vehicle seat may be a seat for a vehicle other than a vehicle, or a seat installed in a home or facility other than a vehicle. good.

Moreover, each element described in each embodiment and each modification described in this specification can be implemented in an appropriate combination.

100 Control unit 110 Measured value acquisition unit 120 Processing unit 121 Operation instruction unit 122 Operation determination unit P Seated person PS1 to PS6 Pressure sensor S Vehicle seat S1 Seat cushion S2 Seat back SB1 First back sensor SB2 Second back sensor SC1 First Cushion sensor SC2 2nd cushion sensor SP Smartphone SYS system

Claims (10)

a seat body having a seat cushion and a seat back ;
A plurality of sensors that acquire measured values for identifying the motion of a seated person sitting on the seat body, the sensor acquiring a pressure value from the seated person sitting on the seat body as the measured value; Multiple sensors fixed to the seat body,
A sheet comprising a control unit connected to the sensor so as to be able to obtain the measured value from the sensor,
The plurality of sensors are
are provided in a symmetrical pair with respect to the left and right centers of the seat body,
a first cushion sensor arranged side by side on the seat cushion at a position corresponding to the lowest part of the seated person's ischium; and a position located in front of the first cushion sensor corresponding to the lower thigh of the seated person. and second cushion sensors arranged side by side,
The control unit includes:
a motion instruction unit that instructs the seated person to perform one predetermined motion from a plurality of pre-stored motions different from the reference posture from a reference posture;
a motion determination unit that specifies the motion of the seated person based on the measured values from at least two of the first cushion sensor and the second cushion sensor ;
The motion determination section determines whether the seated person is performing the predetermined motion after the instruction from the motion instruction section;
The motion determination unit identifies the motion of the seated person by comparing the measured values of the plurality of sensors with the values obtained in the reference posture, and compares the magnitude of the motion with a pressure value and a predetermined threshold. A sheet characterized in that judgment is made by comparison with values. The plurality of sensors include a first back sensor arranged in a row on the left and right at a position corresponding to the back of the waist of the seated person on the seat back, and a first back sensor arranged in a row on the left and right above the first back sensor on the seat back. a second back sensor provided with;
The motion determination unit determines the motion of the seated person based on the measured values from at least two of the first cushion sensor, the second cushion sensor, the first back sensor, and the second back sensor. The sheet according to claim 1, characterized in that: The motion determination unit is configured to determine that the pressure value of the first cushion sensor is large and the pressure value of the second cushion sensor on the same side as the first cushion sensor is small, with respect to each pressure value in the reference posture. 3. The seat according to claim 2, wherein it is determined that a heel-raising motion has been performed when the heel is lifted. The motion determination unit is configured such that a pressure value of the first cushion sensor on one of the left and right sides and a pressure value of the first back sensor are larger than each pressure value in the reference posture, and the pressure value of the first cushion sensor on the left and right sides is the same as that of the first cushion sensor on the left and right sides. 4. The seat according to claim 2, wherein when the pressure value of the second cushion sensor on the side becomes small, it is determined that a foot-raising action has been performed. The motion determination unit is configured such that a pressure value of the first cushion sensor on one of the left and right sides and a pressure value of the first back sensor are larger than each pressure value in the reference posture, and the pressure value of the first cushion sensor on the left and right sides is the same as that of the first cushion sensor on the left and right sides. When the pressure value of the second back sensor on the side becomes small and the pressure value of the second back sensor on the left and right side opposite to the first cushion sensor becomes small, it is determined that a foot-raising action has been made. The sheet according to claim 2 or 3, characterized in that: The motion determination unit determines that the motion of stretching the back muscles is performed when the pressure value of the first cushion sensor becomes larger and the pressure value of the first back sensor becomes smaller with respect to each pressure value in the reference posture. The sheet according to any one of claims 2 to 5, characterized in that it is determined that the sheet has been damaged. The motion determination unit is configured such that, with respect to each pressure value in the reference posture, the pressure value of the first cushion sensor becomes large, the pressure value of the first back sensor becomes small, and the pressure value of the second back sensor becomes small. The seat according to any one of claims 2 to 5, wherein when the pressure value becomes small, it is determined that an action of stretching the back muscles has been performed. The motion determination unit is configured such that the pressure value of the first cushion sensor on the right and the pressure value of the first back sensor on the right become larger with respect to each pressure value in the reference posture, and the pressure value of the first back sensor on the left increases. and the pressure value of the second back sensor on the left become smaller, it is determined that an action of turning the upper body to the right has been made, said claim 2 . Sheet listed in. The motion determination unit is configured such that the pressure value of the first cushion sensor on the left and the pressure value of the first back sensor on the left become larger with respect to each pressure value in the reference posture, and the pressure value of the first back sensor on the right increases. and the pressure value of the second back sensor on the right become smaller, it is determined that an action of turning the upper body to the left has been made, according to any one of claims 2 to 8. Sheet listed in. The motion determination unit specifies the motion using a pressure value obtained by adding the pressure value of the right sensor and the pressure value of the left sensor for motions in which there is no distinction between left and right sensors. The sheet according to any one of item 9.

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