JP7807679B2 - Sheet - Google Patents

Description

The present invention relates to a seat that can identify the movements of an occupant.

Conventionally, a device is known that installs a pressure sensor or the like in the driver's seat to estimate the fatigue state of the seated occupant and moves the seat based on the results of this estimation (Patent Document 1).

Japanese Patent Application Laid-Open No. 2017-065504

Conventional seats attempt to relieve fatigue by moving, but this passive exercise does not sufficiently relieve fatigue. Instead, the inventors of the present application believed that encouraging seat occupants to exercise actively would not only effectively relieve fatigue but also make the journey more enjoyable. Furthermore, while long journeys on vehicles such as airplanes and long-distance buses pose a risk of traveler's thrombosis, enjoyable exercise while on board may potentially help prevent traveler's thrombosis.

Furthermore, even in seats other than those used in vehicles, exercising while sitting could potentially contribute to a healthier lifestyle.

However, with conventional seats, it was not possible to identify the movements of the occupant, making it impossible to create such an enjoyable seat.

Therefore, the present invention aims to provide a seat that can identify the movements of an occupant.

The present invention, which solves the above-mentioned problems, is a seat that includes a seat body, a sensor that acquires measurements to identify the movements of an occupant sitting in the seat body, and a control unit connected to the sensor so that the measurements can be acquired from the sensor. The control unit has an action instruction unit that instructs the occupant to perform a predetermined movement, and an action determination unit that identifies the occupant's movement based on the measurements from the sensor, and the movement determination unit determines whether the occupant is performing the predetermined movement after receiving an instruction from the action instruction unit.

With this configuration, the seat's control unit instructs the seat occupant to perform an action via the action instruction unit, and the action determination unit determines whether the seat occupant is performing the specified action after the action instruction unit instructs the occupant to perform the specified action. This allows the seat occupant to actively perform an action and the seat to respond regarding the quality of that action, making it possible to provide a seat that has an interactive relationship with the seat occupant.

In the above-mentioned seat, it is desirable that the sensor acquires the pressure value from the occupant seated on the seat body as the measurement value.

With this configuration, the pressure values from the seated occupant can be obtained, allowing the occupant's movements to be identified with high accuracy.

In the above-mentioned seat, the action instruction unit may be configured to instruct the seat occupant to perform a predetermined action using at least one of sound, light, image, video, text, vibration, and heat/cold.

In the above-mentioned seat, if the movement determination unit determines that the seated occupant is not performing a predetermined movement, it is desirable that the movement instruction unit again instruct the occupant to perform the predetermined movement.

This configuration encourages the seated occupant to take more active action.

In the above-mentioned seat, if the movement determination unit determines that the magnitude of the specified movement made by the seated person is insufficient, it is desirable that the movement instruction unit instruct the seated person to make the specified movement larger.

This configuration allows the seated person to exercise more, increasing the enjoyment of sitting and contributing to a healthier lifestyle.

In the above-mentioned seat, if the movement determination unit determines that the movement being performed by the seated person is different from the movement instructed by the movement instruction unit, it is desirable that the movement instruction unit notify the seated person of the correct way to move.

This configuration encourages the seated occupant to engage in healthy exercise. Furthermore, when the seated occupant is required to perform an operation using their movements, it encourages accurate operation.

This invention makes it possible to identify the movements of a seated occupant.

It also encourages active movement among sitter, increasing the enjoyment of sitting and contributing to a healthier lifestyle.

1 is a diagram illustrating the overall configuration of a system using a vehicle seat according to an embodiment. 2A to 2C are diagrams illustrating the configuration of each vehicle seat. 1A and 1B are diagrams illustrating the arrangement of sensors, in which FIG. 1A is a diagram of the seat back as seen from the front, and FIG. 1B is a diagram of the seat cushion as seen from above. FIG. 10 is a cross-sectional view of a seat illustrating the arrangement of sensors. FIG. 1 is a block diagram illustrating the configuration of a vehicle seat and a system. 10 is a table illustrating criteria for determining an action. This is an example of a list of movements for a full-body course. This is a message table when it is determined that the device is not operating. 10 is a message table when the operation is determined to be insufficient. This is a message table when it is determined that the operation is different from the instruction. 10 is a flowchart illustrating an example of processing by a control unit. 10 is a flowchart of a process of motion determination. 10 is a flowchart of a heel lift/foot lift determination process (right). 10 is a flowchart of a process for determining upper body rotation (right). 10 is a flowchart of a process for determining whether the user is straightening his or her back or pressing the shoulder blades. 10 is an example of a menu screen. This is an example of a calf exercise screen. 10 is an example of a presentation screen when the movement is small. 10 is an example of a presentation screen when it is determined that an operation different from the instruction is being performed.

Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in Fig. 1, a vehicle seat S, which is an example of a seat of the present invention, is configured as a vehicle seat to be mounted in, for example, a vehicle CR. The vehicle seat S comprises a seat body S0 and a control unit 100. The vehicle CR is provided with four vehicle seats S, for example, two front seats and two rear seats. The vehicle CR is also provided with the control unit 100, which integrates information between the four vehicle seats S, operates them in conjunction with each other, and communicates with a smartphone SP, which is an example of a terminal used by a seat occupant P.
In this manner, in the vehicle CR, the control unit 100 and the plurality of seat bodies S0 constitute a system SYS for the vehicle seat S.

As shown in FIG. 2, the seat body S0 has a seat cushion S1 and a seat back S2. The seat cushion S1 and the seat back S2 have multiple pressure sensors PS1 to PS6 mounted beneath their surfaces. The pressure sensors PS1 to PS6 are sensors that acquire measurements to identify the movements of an occupant P seated in the seat body S0, and more specifically, acquire pressure values from the occupant P seated in the seat body S0. The control unit 100 is connected to the pressure sensors PS1 to PS6 so that it can acquire pressure values from each of the pressure sensors PS1 to PS6.

The pressure sensors PS1 to PS6 are provided in pairs symmetrically with respect to the center of the vehicle seat S on the left and right.
Specifically, as shown in FIG. 3B, the seat cushion S1 is provided with pressure sensors PS1 to PS3.

Pressure sensor PS1 is located at a position corresponding to the lowest part of the seated occupant P's ischial bones. This position is where the weight of the seated occupant P is greatest. Pressure sensor PS1 can be placed, for example, 60 to 70 mm, for example 65 mm, to the left and right of the center C of the vehicle seat S.

Pressure sensor PS2 is positioned slightly forward of pressure sensor PS1, and can be positioned, for example, 50 to 60 mm, e.g., 55 mm, forward of pressure sensor PS1, and 65 to 75 mm, e.g., 70 mm, to the left and right of center C. Pressure sensors PS1 and PS2 are examples of first cushion sensors positioned on seat cushion S1 at positions corresponding to the buttocks of seated occupant P. The first cushion sensors include at least one right cushion sensor (pressure sensors PS1, PS2) and at least one left cushion sensor (pressure sensors PS1, PS2).

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

Pressure sensor PS3 is positioned far forward from pressure sensors PS1 and PS2. Pressure sensor PS3 is an example of a second cushion sensor located in front of first cushion sensor SC1 on seat cushion S1. In the following description, pressure sensor PS3 will also be referred to as second cushion sensor SC2.

Pressure sensor PS3 is located under the thighs of seated occupant P and is capable of measuring pressure values from the thighs of seated occupant P. Pressure sensor PS3 can be positioned, for example, 110 to 130 mm, e.g., 120 mm in front of pressure sensor PS2 (175 mm in front of pressure sensor PS1), and 65 to 75 mm, e.g., 70 mm, to the left and right of center C.

As shown in FIG. 4, the second cushion sensor SC2 is preferably located forward of position E1, which is 280 mm forward along the seat surface S11 of the seat cushion S1 from the seat surface S21 of the seat back S2. The first cushion sensor SC1 is located behind position E1. Position E1 is measured by placing one ruler M11 of an L-shaped curved ruler M1 along the seat surface S11 of the seat cushion S1 and placing the other ruler M12 against the seat surface S21 of the seat back S2. If the shape of the seat back S2 (e.g., the lumbar support) is adjustable, any shape will suffice as long as it satisfies this requirement. By locating the second cushion sensor SC2 in this position, the second cushion sensor SC2 can accurately detect the up and down movement of the thighs of the seated occupant P.

As shown in Figures 2 and 3(a), pressure sensors PS4 to PS6 are provided on the seat back S2. Pressure sensor PS4 is provided in a position corresponding to the back of the seated occupant P. Pressure sensor PS4 can be positioned, for example, 45 to 55 mm, e.g., 50 mm, to the left and right of the center C of the vehicle seat S.

Pressure sensor PS5 is positioned slightly above pressure sensor PS4, and can be positioned, for example, 70 to 80 mm, e.g., 75 mm, above pressure sensor PS4, and 85 to 95 mm, e.g., 90 mm, to the left and right of center C. Pressure sensors PS4 and PS5 are an example of a first back sensor positioned in the lower part of seat back S2. The first back sensors include at least one right back sensor (pressure sensors PS4, PS5) and at least one left back sensor (pressure sensors PS4, PS5).

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

Pressure sensor PS6 is positioned significantly above pressure sensors PS4 and PS5. Pressure sensor PS6 is an example of a second back sensor positioned above the first back sensor SB1 in the seat back S2. In the following description, pressure sensor PS6 is also referred to as the second back sensor SB2.

Pressure sensor PS6 is positioned corresponding to the upper part of the back of seated occupant P and is capable of measuring pressure values from the shoulder blades of seated occupant P. Pressure sensor PS6 can be positioned, for example, 190 to 210 mm, e.g., 200 mm above pressure sensor PS5 (275 mm above pressure sensor PS1), and 95 to 105 mm, e.g., 100 mm, to the left and right of center C.

As shown in FIG. 4, the second back sensor SB2 is preferably located above position E2, 300 mm above the seat surface S11 of the seat cushion S1 along the seat surface S21 of the seat back S2. The first back sensor SB1 is located below position E2. Position E2 is measured by placing one ruler M21 of an L-shaped curved ruler M2 along the seat surface S21 of the seat back S2 and placing the other ruler M22 against the seat surface S11 of the seat cushion S1. If the shape of the seat back S2 (e.g., lumbar support) is adjustable, any shape will suffice as long as it satisfies this requirement. By locating the second back sensor SB2 in this position, the second back sensor SB2 can detect pressure from the shoulders of the seated occupant P.

In the following description, the pressure values acquired by pressure sensors PS1 to PS6 will be referred to as P1 to P6, respectively, and the right and left pressure values will be indicated by the suffixes R and L, such as P1 _R and P1 _L , respectively. Note that pressure sensors PS1 to PS6 are, for example, elements whose electrical resistance changes depending on external pressure, and the greater the pressure value, the higher (or lower) the voltage of the detection signal. Therefore, while pressure values are actually compared based on voltage values, this specification will be described in terms of determining the pressure value for ease of understanding.

As shown in FIG. 5, the control unit 100 has a measurement value acquisition unit 110, a processing unit 120, a communication unit 130, and a storage unit 190. The control unit 100 also has a CPU, ROM, RAM, rewritable non-volatile memory, etc. (not shown), and each functional unit is realized by executing pre-stored programs.

A short-range communication device 3A, which 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 can communicate with the smartphone SP via the communication unit 130 and the short-range communication device 3A, and can work with apps installed on the smartphone SP to provide specific screens and sounds to the smartphone SP, as well as obtain data entered on the smartphone SP.

The measurement value acquisition unit 110 has the function of acquiring pressure measurements from each pressure sensor PS1 to PS6 at regular control cycles. The measurement values acquired by the measurement value acquisition unit 110 are stored in the memory unit 190 and used by the processing unit 120. The memory unit 190 is used to store data required for calculations, processing, etc. as needed.

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

The action instruction unit 121 instructs the seated person P to perform a predetermined action. In this embodiment, the actions to be instructed are actions pre-stored 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. 7 . In the action list, the order of the action, "No.", is stored in association with an action code MC and the time [ms] for performing the action. For example, the first action, "No. 1," has an action code MC of "1R" that lasts for 1000 ms, and the next action, "No. 2," has an action code MC of "1L" that lasts for 1000 ms. As shown in FIG. 6 , the action codes are: "1R" and "1L" for heel lifting, "2R" and "2L" for leg lifting, "3" for straightening the back, "4" for pressing the shoulder blades, and "5R" and "5L" for rotating the upper body. The R and L in each code represent right and left movements, respectively. For example, "1R" means lifting the right heel, and "5L" means turning (twisting) the upper body to the left.
7, the operation code "0" of No. 301 means to do nothing, and "EOL" means the end of the operation list.

When the action instruction unit 121 instructs an action according to the action list, it sequentially reads out the action code MC and time in ascending order of the action list number and outputs them to the app on the smartphone SP. The app on the smartphone SP stores image data and audio data corresponding to this action code MC, and outputs an image containing text (including a changing image, i.e., a video) on the screen of the smartphone SP, as well as outputting the action instruction using music and voice (i.e., sound, light, image, video, and text) from the speaker of the smartphone SP.

Here, each operation will be explained.
Heel raises are exercises that raise the heels off the floor. In the present invention, heel raises include calf exercises, in which the calves are used to raise the heels while keeping the toes on the floor, and foot raises, in which the thigh muscles and iliopsoas muscles are mainly used to raise the toes off the floor. This is because both of these are exercises that raise the heels.
In this embodiment, as an example, the action instructing unit 121 instructs both calf exercises and leg lifting exercises separately, and therefore, the heel lifting exercise refers to only calf exercises (heel lifting exercises in the narrow sense). For example, the app may express the calf exercise as "Lift your heels." However, when performing the exercises without instructing (distinguishing) both calf exercises and leg lifting exercises, the heel lifting exercise can also be referred to as including both calf exercises and leg lifting exercises (heel lifting exercises in the broad sense). Below, we will provide additional information on whether the heel lifting exercise is meant in the narrow sense or the broad sense, as appropriate.

Leg raises, as mentioned above, involve raising your feet until they are off the floor.

Stretching the spine involves straightening the spine vertically and moving the back away from the seat back S2.

Scapular compression is the movement of pressing the shoulder blades against the seat back S2.

Twisting the upper body is an exercise in which the upper body is rotated (twisted) to the right or left while sitting on the seat cushion S1, with the face turned to the side or backward. The twisting of the upper body is performed while remaining attached to the seat back S2. For example, when twisting to the right, the right shoulder is attached to the seat back S2 and the left shoulder is lifted off the seat back S2.

If the action determination unit 122 determines that the seated occupant P has not performed the predetermined action instructed by the action instruction unit 121, the action instruction unit 121 again instructs the seated occupant P to perform the predetermined action.
As will be described later, in this embodiment, if the operation determination unit 122 cannot identify the operation, it sets the operation determination code MCJ, which indicates the result of the operation determination, to 0. Therefore, if MCJ is 0, the operation instruction unit 121 again instructs via the smartphone SP to perform a specified operation (an operation corresponding to the data read from the operation list).

The message that the action instruction unit 121 outputs to the smartphone SP when the seated occupant P does not perform the predetermined action instructed by the action instruction unit 121 is stored in the memory unit 190. This message is stored in association with each action code MC, for example, as shown in FIG. 8.

Furthermore, if the movement determination unit 122 determines that the magnitude of the predetermined movement being performed by the seated person P is insufficient, the movement instruction unit 121 instructs the seated person P to make the predetermined movement larger.
As will be described later, in this embodiment, the movement determination unit 122 sets the magnitude data MS, which indicates the magnitude of the movement, to 2 if the movement is sufficient, 1 if the movement is insufficient, and 0 if no movement is made.Therefore, when the magnitude data MS is 1, the movement instruction unit 121 instructs the seated occupant P via the smartphone SP to make a specified movement in a large scale.
The message that the action instructing unit 121 outputs to the smartphone SP when the magnitude of the predetermined action performed by the seated occupant 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 action code MC.

Furthermore, if the action determination unit 122 determines that the action being performed by the seated person P is different from the action instructed by the action instruction unit, the action instruction unit 121 notifies the seated person P of the correct way to perform the action.
In this embodiment, if the instructed action code MC does not match the action determination code MCJ, the action determination unit 122 notifies the seated occupant P of the correct action via the smartphone SP.

The message that the action instruction unit 121 outputs to the smartphone SP when the action being performed by the seated occupant P differs from the action instructed by the action instruction unit 121 is stored in the memory unit 190. For example, as shown in FIG. 10, this message is stored in association with each combination of action code MC and each action determination data.

The movement determination unit 122 is configured to identify the movement of the seated occupant P based on the output of at least two pressure sensors PS1 to PS6 from the first cushion sensor SC1, the second cushion sensor SC2, the first back sensor SB1, and the second back sensor SB2. After the movement instruction unit 121 issues an instruction to perform a predetermined movement, the movement determination unit 122 determines whether the seated occupant P is performing the predetermined movement.

Figure 6 shows the movement determination criteria in detail in a table. Specifically, the movement determination unit 122 determines that a heel-lifting movement has been performed when, relative to the respective pressure values in the reference posture, the pressure value P2 of the pressure sensor PS2 of the first cushion sensor SC1 on the side of the foot being lifted increases and the pressure value P3 of the pressure sensor PS3 of the second cushion sensor SC2 on the same side decreases.

Here, the reference posture refers to the state in which the seated occupant P is normally sitting with their upper body against the backrest without lifting their legs or twisting their upper body, and the pressure values acquired by each of the standard pressure sensors PS1 to PS6 in this state are stored in the memory unit 190. For the seated occupant P in the reference posture, the pressure value for an average adult may be stored, or the pressure value for the reference posture may be stored for each weight of the seated occupant P. Here, for simplicity of explanation, it is assumed that one pressure value for a representative reference posture, for example, the pressure value for an average adult, is stored.

In addition, in Figure 6, SC1 (PS2) indicates that of the two pressure sensors PS1 and PS2 (four sensors in total, on both sides) of the first cushion sensor SC1, the value of pressure sensor PS2 is used for the determination. In this embodiment, for example, in the case of heel lift, the measurement value of pressure sensor PS2 is used as the first cushion sensor SC1, but the measurement value of pressure sensor PS1 may also be used. Similarly, for other movements, when determining a movement based on the measurement value of the first cushion sensor SC1, either the measurement value of the two pressure sensors PS1 and PS2 may be used. When determining a movement based on the measurement value of the first back sensor SB1, either the measurement value of the two pressure sensors PS4 and PS5 may also be used.

The movement determination unit 122 determines that a leg-lifting movement has been performed when the pressure value P2 of the pressure sensor PS2 of the first cushion sensor SC1 on the side of the foot being lifted and the pressure value P4 of the pressure sensor PS4 of the first back sensor SB1 increase relative to the respective pressure values in the reference posture, and the pressure value P3 of the second cushion sensor SC2 on the same side decreases. In this embodiment, to ensure even greater accuracy, a decrease in the pressure value P6 of the second back sensor SB2 on the opposite side is also used as a condition for determining a leg-lifting movement.

The movement determination unit 122 determines that the back-stretching movement has been performed when the pressure value P1 of the pressure sensor PS1 of the first cushion sensor SC1 increases and the pressure value P5 of the pressure sensor PS5 of the first back sensor SB1 decreases relative to the pressure values in the reference posture. In this embodiment, to ensure accuracy, the back-stretching movement is also determined to be performed when the pressure value P6 of the second back sensor SB2 decreases.
In addition, since there is no distinction between left and right when straightening the back, the pressure value used is the sum of the pressure values for the left and right.

The action determination unit 122 determines that an action of pressing the shoulder blades against the seat back S2 has been performed when 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 and the pressure value P4 of the pressure sensor PS4 of the first back sensor SB1 becomes smaller compared to the respective pressure values in the reference posture.
In addition, since there is no distinction between left and right shoulder blade pressure, the pressure value used is the sum of the left pressure value and the right pressure value.

The movement determination unit 122 determines that a movement of turning the upper body to the right has been performed when the pressure value _P1R of the pressure sensor PS1 of the right first cushion sensor SC1 and the pressure value _P4R of the pressure sensor PS4 of the right first back sensor SB1 increase and the pressure value _P4L of the pressure sensor PS4 of the left first back sensor SB1 and the pressure value _P6L of the left second back sensor SB2 decrease, relative to the respective pressure values in the reference posture, and determines that a movement of turning the upper body to the left has been performed when the pressure value _P1L of the pressure sensor PS1 of the left first cushion sensor SC1 and the pressure value _P4L of the pressure sensor PS4 of the left first back sensor SB1 increase and the pressure value _P4R of the pressure sensor PS4 of the right first back sensor SB1 and the pressure value _P6R of the right second back sensor SB2 decrease.

In the above determination, whether the pressure value has increased or decreased relative to the reference posture can be determined by comparing it with each threshold value stored in advance in the memory unit 190.

In addition, for each movement, the magnitude of the movement can be determined by comparing the pressure value with a predetermined threshold value, and the movement determination unit 122 sets the magnitude data MS to 2 if the movement magnitude is sufficient, 1 if it is insufficient, and 0 if no movement is being made.

Next, an example of the process of providing an exercise game by the control unit 100 will be described with reference to FIGS.
11, the processing unit 120 presents a menu screen of an exercise game on the smartphone SP (S11). For example, as shown in FIG. 16, the menu screen presents a button B01 for a "full body course" and a button B02 for a "lower body course" as a menu of in-car exercises, prompting the seated occupant P to make a selection. The processing unit 120 determines whether a menu item has been selected (whether a button press signal has been received) and waits until a selection is made (S12, No).

When seated person P presses button B01 or B02 to select a menu item (S12, Yes), the processing unit 120's action instruction unit 121 reads an action code MC from the action list (S21) and determines whether the action code MC is "EOL" (S22). If the action code MC is not "EOL" (S22, No), the action instruction unit 121 outputs the read action code and action time as an action instruction to the smartphone SP (S23). In response to this action instruction, the smartphone SP displays, for example, a text instruction such as "1. Calf exercise" and an image (such as an animation) corresponding to the action code MC on the screen DSP, as shown in FIG. 17, and issues an audio instruction from the speaker SPK, such as "Use your calves to lift your heels. Right, left, right, ..." At this time, it is recommended that music with a rhythm corresponding to the action time be output to help seated person P keep the rhythm. Here, Figure 17 shows, as an example, an image of calf exercise (heel lift exercise in the narrow sense) and the right heel being lifted.

Then, the movement determination unit 122 determines the movement of the seated occupant P based on the pressure values acquired from the pressure sensors PS1 to PS6 (S100). As shown in Figure 12, the movement determination process begins by initializing both the movement determination code MCJ and the size data MS to 0.

Then, the heel lift/foot lift determination (right) (step S200) is processed.
As shown in FIG. 13, this determination first determines whether the pressure value _P2R of the right pressure sensor PS2 is greater than the threshold value P2th1 (S201). If the pressure value _P2R is greater than the threshold value P2th1 (S201, Yes), then it determines whether the pressure value _P3R of the right pressure sensor PS3 is less than the threshold value P3th (S202). If the pressure value _P3R is less than the threshold value P3th (S201, Yes), the pressure under the right buttock is high and the pressure under the thigh is low, indicating that the right heel is raised in a broad sense (regardless of whether the foot is on the floor or not). If the determination in step S201 or step S202 is No, the heel or foot is not being raised (in the narrow sense), and step S200 is terminated. At this time, both the movement determination code MCJ and the size data MS remain 0.

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

After step S211 or step S212, the movement determination unit 122 determines whether the pressure value _P2R of the right pressure sensor PS2 is greater than a threshold value P2th2 (S220). Here, the threshold value P2th1 is a value used to determine whether or not the exercise is at least sufficient to be considered as heel-lifting, and the threshold value P2th2 is a value used to determine whether or not the heel is sufficiently lifted. In other words, P2th2 is greater than P2th1.

If the pressure value _P2R is greater than the threshold value P2th2 (S220, Yes), the movement is considered to be of sufficient magnitude, and the magnitude data MS is set to 2 (S222). On the other hand, if the pressure value _P2R is not greater than the threshold value P2th2 (S220, No), the movement is considered to be of insufficient magnitude, and the magnitude data MS is set to 1 (S221).

This completes step S200 for determining whether the heel is being raised or the foot is being raised (right). Return to Figure 12 and execute step S300 for determining whether the heel is being raised or the foot is being raised (left). Step S300 differs from step S200 in that the pressure values used for determining whether the right or left is being raised is reversed, and therefore will not be described here.

After step S300, step S400 for determining upper body rotation (right) is executed.
14, first, it is determined whether or not the motion determination code MCJ is 0 (S401). If MCJ is not 0 (S401, No), the motion determination has already been completed, and step S400 is terminated.
If MCJ is 0 (S401, Yes), it is determined whether the pressure value _P1R of the right pressure sensor PS1 is greater than a threshold value P1th1 (S410). If the pressure value _P1R is greater than the threshold value P1th1 (S410, Yes), it is further determined whether the pressure value _P4R of the right pressure sensor PS4 is greater than a threshold value P4th1 (S411). If the pressure value _P4R is greater than the threshold value P4th1 (S411, Yes), it is further determined whether the pressure value _P4L of the left pressure sensor PS4 is less than a threshold value P4th2 (S412). Note that P4th2 is less than P4th1. If the pressure value _P4L is less than the threshold value P4th2 (S412, Yes), it is further determined whether the pressure value _P6L of the left pressure sensor PS6 is less than a threshold value P6th (S413). If the pressure value _P6L is smaller than the threshold value P6th (Yes in S413), it is considered that the upper body is being turned to the right, and the movement determination code MCJ is set to 5R (S420). On the other hand, if the answer is No in any of steps S410, S411, S412, and S413, it is considered that the upper body is not being turned to the right, and step S400 is terminated without changing the movement determination code MCJ and the size data MS.

After setting the movement determination code MCJ to 5R, the movement determination unit 122 determines whether the pressure value _P1R is greater than a threshold value P1th2 (S430). Here, the threshold value P1th1 is a value used to determine whether or not the exercise is at least sufficient to rotate the upper body, and the threshold value P1th2 is a value used to determine whether or not the upper body is sufficiently rotated. In other words, P1th2 is greater than P1th1.

If the pressure value P1 _R is greater than the threshold value P1th2 (S430, Yes), the movement is considered to be of sufficient magnitude, and the magnitude data MS is set to 2 (S432). On the other hand, if the pressure value P1 _R is not greater than the threshold value P1th2 (S430, No), the movement is considered to be of insufficient magnitude, and the magnitude data MS is set to 1 (S431).

This completes step S400 for determining whether the body is rotating (right), and the process returns to Figure 12, where step S500 for determining whether the body is rotating (left) is executed. Step S500 differs from step S400 in that the pressure values used for determination are reversed from right to left, and therefore will not be explained further.

After step S500, step S600 is executed to determine whether the user is straightening his or her back or pressing against the shoulder blades.
15, first, it is determined whether or not the motion determination code MCJ is 0 (S601). If MCJ is not 0 (S601, No), the motion determination has already been completed, and step S600 is terminated.
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 greater than a threshold value P1th3 (S610). If the sum of the pressure values _P1R and _P1L is not greater than the threshold value P1th3 (S610, No), it is determined that neither the back straightening nor the shoulder blade pressing action is being performed, and step S600 is terminated. In this case, the action determination code MCJ and the magnitude data MS are both 0, and it is determined that no action is being performed. If the sum of the pressure values _P1R and _P1L is greater than the threshold value P1th3 (S610, Yes), it is further determined whether 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 greater 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 (No in S611), it cannot be said that the shoulder blades are being pressed against the seat back S2, so the movement determination unit 122 calculates P56 by adding the pressure values _P5R and _P5L of the left and right pressure sensors PS5 and _P6R and _P6L of the left and right pressure sensors PS6 to determine whether the person is straightening their back (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 (No in S622), it means that the upper body has not been sufficiently separated from the seat back S2 to be said to be straightening their back, so step S600 is terminated without changing the movement determination code MCJ and the size data MS, both of which remain at 0.

On the other hand, in step S622, if P56 is smaller than the threshold value P56th1 (S622, Yes), the upper body is sufficiently spaced from the seat back S2 to be considered upright, so the movement determination code MCJ is set to 3 (S623).
The movement determination unit 122 then determines whether P56 is smaller than a threshold value P56th2 (S625). Here, the threshold value P56th2 is smaller than P56th1. If P56 is not smaller than the threshold value P56th2 (S625, No), the back is slightly pushing against the seat back S2, so the movement is insufficient, and the magnitude data MS is set to 1 (S626). On the other hand, if P56 is smaller than the threshold value P56th2 (S625, Yes), the back is sufficiently far from the seat back S2 or is barely pushing against it, so the movement is sufficient, and the magnitude data MS is set to 2 (S627). Then, after steps S626 and S627, step S600 ends.

In step S611, if it is determined that the sum of the pressure values _P6R and _P6L is greater than the threshold value P6th3 (S611, Yes), it can be said that the shoulder blades are pressed against the seat back S2, so the movement determination unit 122 further determines whether the sum of the pressure value _P4R of the right pressure sensor PS4 and the pressure value _P4L of the left pressure sensor PS4 is smaller than the threshold value P4th3 (S630).
If the sum of pressure values _P4R and _P4L is not smaller than threshold value P4th3 (S630, No), the entire back is being pressed against seat back S2 rather than the shoulder blades, so step S600 is terminated without changing either motion determination code MCJ or size data MS, which remain at 0.

If the sum of the pressure values _P4R and _P4L is smaller than the threshold value P4th3 (S630, Yes), it can be said that the shoulder blades, rather than the entire back, are being pressed well against the seat back S2, and the motion determination code MCJ is set to 4 (S631).
Next, it is determined whether the sum of the pressure values _P6R and _P6L is greater than a threshold value P6th4 (S632). The threshold value P6th4 is a value used to determine whether the shoulder blades are being pressed sufficiently hard against the seat back S2, and is greater than the threshold value P6th3. If the sum of the pressure values _P6R and _P6L is not greater than the threshold value P6th4 (S632, No), the force pressing the shoulder blades against the seat back S2 is insufficient, and the magnitude data MS is set to 1 (S633). If the sum of the pressure values _P6R and _P6L is greater than the threshold value P6th4 (S632, Yes), the force pressing the shoulder blades against the seat back S2 is sufficient, and the magnitude data MS is set to 2 (S634), and step S600 is terminated. This completes step S100 for determining movement.

11 , after the action determination step S100, the action instruction unit 121 determines whether the action determination code MCJ is 0, and if it is 0 (Yes in S30), outputs a message (S31). For example, as shown in FIG. 17 , when performing calf exercises, if the action determination code MCJ is 0, the action instruction unit 121 refers to the message table in FIG. 8 , reads a message corresponding to action code 1R, and outputs it to the smartphone SP. As a result, a message such as "Your feet are not moving. Use your calves to lift your heels" is output from the speaker SPK of the smartphone SP (see FIG. 17 ).
After outputting the message, the operation instruction unit 121 returns to step S23 and again instructs the user to perform the predetermined operation.

If it is determined in step S30 that the movement determination code MCJ is not 0 (S30, No), the movement instruction unit 121 determines whether the movement determination code MCJ matches the movement code MC (S40). If the movement determination code MCJ matches the movement code MC (S40, Yes), the movement determination unit 122 further determines whether 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 has moved as instructed, so the process returns to step S21 to instruct the next movement.

If it is determined in step S41 that the magnitude data MS is 1 (S41, Yes), the magnitude of the movement is insufficient, and the movement instruction unit 121 outputs a message to the smartphone SP instructing the user to make larger movements (S42). For example, if the magnitude of the movement during calf exercise is insufficient, the message table in FIG. 9 is referenced, a message corresponding to movement code 1L is read, and output to the smartphone SP. As a result, as shown in FIG. 18, a message such as "Your heel lift appears to be insufficient. Raise your heels higher. Right, left, right, ..." is output from the speaker SPK of the smartphone SP. At this time, if an image of the heel being lifted higher than that shown in FIG. 17 is displayed on the screen DSP, it will be easier for the seated occupant P to understand what they should do. After outputting the message, the process returns to step S21 to instruct the next movement.

In step S40, if it is determined that the movement determination code MCJ does not match the movement code MC (S40, No), the seated person P is performing a movement different from the instruction, and a message on the correct movement method is output to the smartphone SP (S43). For example, if it is determined that the seated person P is performing a heel-up exercise during a leg-up exercise, that is, if the movement code MC is 2R and the movement determination code MCJ is 1R, a message corresponding to the combination of MC = 2R and MJC = 1R is read from the message table in FIG. 10 and output to the smartphone SP. As a result, a message such as "Lift your feet until they leave the floor. Right, left, right, ..." is output from the speaker SPK of the smartphone SP, as shown in FIG. 19. After outputting the message, the process returns to step S21 to instruct the next movement.

After reading the operation code MC (S21), if the operation code MC is "EOL" (S22, Yes), the operation list ends, and the process ends by displaying an end screen on the smartphone SP (S60, not shown).

As described above, with the vehicle seat S of this embodiment, it is possible to identify the movement of the seated occupant P by combining pressure values from at least two of the at least four sensors: the first cushion sensor SC1 and the second cushion sensor SC2, which are spaced apart in the front and rear of the seat cushion S1, and the first back sensor SB1 and the second back sensor SB2, which are spaced apart in the top and bottom of the seat back S2.

The vehicle seat S can then determine whether or not the seated occupant P is performing the specified action after the control unit 100 instructs the seated occupant P to perform the action via the action instructing unit 121 and the action determining unit 122 instructs the seated occupant P to perform the specified action via the action instructing unit 121. This allows the seated occupant P to actively perform actions and the vehicle seat S to respond regarding the quality of the action, making it possible to provide a seat with an interactive relationship with the seated occupant P. If the seated occupant P can be encouraged to perform active actions by providing exercise games or the like, as in the above embodiment, fatigue can be effectively alleviated, resulting in a more enjoyable journey. While the onset of traveler's thrombosis is particularly problematic on long journeys such as airplanes and long-distance buses, enjoying exercise on board the vehicle may be able to prevent traveler's thrombosis.

Furthermore, with the vehicle seat S of this embodiment, the movement of the seated occupant P can be identified with high accuracy by acquiring pressure values from the seated occupant P.

If the movement determination unit 122 determines that the seated occupant P is not performing the specified movement, the movement instruction unit 121 again instructs the seated occupant P to perform the specified movement, thereby encouraging the seated occupant P to move more actively.

If the movement determination unit 122 determines that the magnitude of the specified movement being performed by the seated person P is insufficient, the movement instruction unit 121 instructs the seated person P to perform the specified movement in a larger scale, thereby allowing the seated person P to exercise more, increasing the enjoyment of sitting and providing a healthy lifestyle.

If the movement determination unit 122 determines that the movement being performed by the seated person P is different from the movement instructed by the movement instruction unit 121, the movement instruction unit 121 notifies the seated person P of the correct way to move, thereby encouraging healthy exercise from the seated person P. Furthermore, while the above embodiment has been described using an exercise game as an example, if the seated person P is to operate another device such as a smartphone SP or a navigation system in accordance with their movement, notifying them of the correct way to move can 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. Specific configurations can be modified as appropriate without departing from the spirit of the present invention.

For example, in the above embodiment, the action instruction unit instructs the seated person P to perform a predetermined action using sound, light, images, videos, and text, but it may also instruct using vibration or hot/cold sensations. Hot/cold sensations refer to the stimulation of a warm or cold sensation to the seated person P, and can be imparted, for example, by heating the seat surface with a heater or blowing air on the seated person P with a blower. Note that in this specification, text includes Braille.

In the above embodiment, each threshold value is assumed to be constant, but the threshold value does not have to be constant. For example, if the seated person can be identified by a smartphone ID or the like, a threshold value can be stored for each seated person. Also, the movement proficiency and habits of each seated person can be estimated and stored, and the threshold value can be changed according to the proficiency and habits.

In the above embodiment, an exercise game was described as an example, but other games can also be provided. For example, a training app (game-like) for achieving good posture can also be provided.

In the above embodiment, the control unit is a device separate from the smartphone, but the control unit may also be configured as both a device provided in the seat or vehicle and the smartphone. In other words, part or all of the smartphone may be configured as part of the seat.

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

In the above embodiment, for actions such as straightening the back, which do not distinguish between left and right, the pressure value used was the sum of the left and right pressure values. However, the average of the left and right pressure values may also be used, or it may be determined whether the right and left pressure values each satisfy a condition, and if at least one or both satisfy the condition, it may be determined that the action is being performed.

Measurements other than pressure values can also be obtained to identify the occupant's movements. For example, measurements from capacitance sensors can be used.

In the above embodiment, a seat installed in a vehicle was used as an example of a vehicle seat, but the vehicle seat may also be a seat for a vehicle other than a vehicle, or a seat installed in a home, facility, or the like other than a vehicle.

Furthermore, the elements described in each embodiment and each modified example described in this specification can be implemented in appropriate combinations.

REFERENCE SIGNS LIST 100 Control unit 110 Measurement value acquisition unit 120 Processing unit 121 Operation instruction unit 122 Operation determination unit P Seat occupant PS1 to PS6 Pressure sensors S Vehicle seat S1 Seat cushion S2 Seat back SB1 First back sensor SB2 Second back sensor SC1 First cushion sensor SC2 Second cushion sensor SP Smartphone SYS System

Claims (10)

a seat body having a seat cushion and a seat back;
a plurality of sensors fixed to the seat body that acquire measurement values for identifying the movement of an occupant sitting in the seat body, the plurality of sensors acquiring pressure values from the occupant sitting in the seat body as the measurement values;
A seat including a control unit connected to the sensor so as to be able to acquire the measurement value from the sensor,
The plurality of sensors include:
The seat body is provided in a symmetrical pair with respect to the center of the left and right sides of the seat body,
a first cushion sensor provided on the seat cushion in a position corresponding to the lowest part of the ischial bones of the seated person, and a second cushion sensor provided on the seat cushion in a position corresponding to the lower part of the thighs of the seated person, and the first cushion sensor provided on the seat cushion in a position corresponding to the lower part of the thighs of the seated person,
The control unit
a movement determination unit that identifies a movement of the seated occupant based on the measurement values from at least two of the first cushion sensor and the second cushion sensor,
the movement determination unit determines whether the seated occupant is performing one predetermined movement among a plurality of movements stored in advance that are different from a reference posture;
The movement determination unit determines that a heel-raising movement has been performed when the pressure value of the first cushion sensor becomes larger and the pressure value of the second cushion sensor on the same left and right side as the first cushion sensor becomes smaller compared to the pressure values in the reference posture. a seat body having a seat cushion and a seat back;
a plurality of sensors fixed to the seat body that acquire measurement values for identifying the movement of an occupant sitting in the seat body, the plurality of sensors acquiring pressure values from the occupant sitting in the seat body as the measurement values;
A seat including a control unit connected to the sensor so as to be able to acquire the measurement value from the sensor,
The plurality of sensors include:
The seat body is provided in a symmetrical pair with respect to the center of the left and right sides of the seat body,
The seat cushion includes a first cushion sensor provided side by side on the left and right at a position corresponding to the lowest part of the sitting bones of the seat occupant, a second cushion sensor provided side by side on the left and right in front of the first cushion sensor at a position corresponding to under the thighs of the seat occupant, a first back sensor provided side by side on the left and right at a position corresponding to behind the waist of the seat occupant, and a second back sensor provided side by side on the seat back above the first back sensor,
The control unit
a movement determination unit that identifies a movement of the seated occupant based on the measurement values from at least two sensors among the first cushion sensor, the second cushion sensor, the first back sensor, and the second back sensor;
the movement determination unit determines whether the seated occupant is performing one predetermined movement among a plurality of movements stored in advance that are different from a reference posture;
The seat is characterized in that the action determination unit determines that a foot-raising action has been performed when the pressure value of the first cushion sensor on one of the left and right sides and the pressure value of the first back sensor become larger than the respective pressure values in the reference posture, and the pressure value of the second cushion sensor on the same left or right side as the first cushion sensor becomes smaller. a seat body having a seat cushion and a seat back;
a plurality of sensors fixed to the seat body that acquire measurement values for identifying the movement of an occupant sitting in the seat body, the plurality of sensors acquiring pressure values from the occupant sitting in the seat body as the measurement values;
A seat including a control unit connected to the sensor so as to be able to acquire the measurement value from the sensor,
The plurality of sensors include:
The seat body is provided in a symmetrical pair with respect to the center of the left and right sides of the seat body,
The seat cushion includes a first cushion sensor provided side by side on the left and right at a position corresponding to the lowest part of the sitting bones of the seat occupant, a second cushion sensor provided side by side on the left and right in front of the first cushion sensor at a position corresponding to under the thighs of the seat occupant, a first back sensor provided side by side on the left and right at a position corresponding to behind the waist of the seat occupant, and a second back sensor provided side by side on the seat back above the first back sensor,
The control unit
a movement determination unit that identifies a movement of the seated occupant based on the measurement values from at least two sensors among the first cushion sensor, the second cushion sensor, the first back sensor, and the second back sensor;
the movement determination unit determines whether the seated occupant is performing one predetermined movement among a plurality of movements stored in advance that are different from a reference posture;
The seat is characterized in that the action determination unit determines that a foot-raising action has been performed when the pressure value of the first cushion sensor on one of the left and right sides and the pressure value of the first back sensor become larger than the respective pressure values in the reference posture, the pressure value of the second cushion sensor on the same left or right side as the first cushion sensor becomes smaller, and the pressure value of the second back sensor on the opposite left or right side as the first cushion sensor becomes smaller. a seat body having a seat cushion and a seat back;
a plurality of sensors fixed to the seat body that acquire measurement values for identifying the movement of an occupant sitting in the seat body, the plurality of sensors acquiring pressure values from the occupant sitting in the seat body as the measurement values;
A seat including a control unit connected to the sensor so as to be able to acquire the measurement value from the sensor,
The plurality of sensors include:
The seat body is provided in a symmetrical pair with respect to the center of the left and right sides of the seat body,
The seat cushion includes a first cushion sensor provided side by side on the left and right at a position corresponding to the lowest part of the sitting bones of the seat occupant, a second cushion sensor provided side by side on the left and right in front of the first cushion sensor at a position corresponding to under the thighs of the seat occupant, a first back sensor provided side by side on the left and right at a position corresponding to behind the waist of the seat occupant, and a second back sensor provided side by side on the seat back above the first back sensor,
The control unit
a movement determination unit that identifies a movement of the seated occupant based on the measurement values from at least two sensors among the first cushion sensor, the second cushion sensor, the first back sensor, and the second back sensor;
the movement determination unit determines whether the seated occupant is performing one predetermined movement among a plurality of movements stored in advance that are different from a reference posture;
The movement determination unit determines that the movement of straightening the back has been performed when the pressure value of the first cushion sensor becomes larger and the pressure value of the first back sensor becomes smaller compared to the respective pressure values at the reference posture. a seat body having a seat cushion and a seat back;
a plurality of sensors fixed to the seat body that acquire measurement values for identifying the movement of an occupant sitting in the seat body, the plurality of sensors acquiring pressure values from the occupant sitting in the seat body as the measurement values;
A seat including a control unit connected to the sensor so as to be able to acquire the measurement value from the sensor,
The plurality of sensors include:
The seat body is provided in a symmetrical pair with respect to the center of the left and right sides of the seat body,
The seat cushion includes a first cushion sensor provided side by side on the left and right at a position corresponding to the lowest part of the sitting bones of the seat occupant, a second cushion sensor provided side by side on the left and right in front of the first cushion sensor at a position corresponding to under the thighs of the seat occupant, a first back sensor provided side by side on the left and right at a position corresponding to behind the waist of the seat occupant, and a second back sensor provided side by side on the seat back above the first back sensor,
The control unit
a movement determination unit that identifies a movement of the seated occupant based on the measurement values from at least two sensors among the first cushion sensor, the second cushion sensor, the first back sensor, and the second back sensor;
the movement determination unit determines whether the seated occupant is performing one predetermined movement among a plurality of movements stored in advance that are different from a reference posture;
The movement determination unit determines that a back-stretching movement has been performed when the pressure value of the first cushion sensor increases, the pressure value of the first back sensor decreases, and the pressure value of the second back sensor decreases, relative to the respective pressure values at the reference posture. a seat body having a seat cushion and a seat back;
a plurality of sensors fixed to the seat body that acquire measurement values for identifying the movement of an occupant sitting in the seat body, the plurality of sensors acquiring pressure values from the occupant sitting in the seat body as the measurement values;
A seat including a control unit connected to the sensor so as to be able to acquire the measurement value from the sensor,
The plurality of sensors include:
The seat body is provided in a symmetrical pair with respect to the center of the left and right sides of the seat body,
The seat cushion includes a first cushion sensor provided side by side on the left and right at a position corresponding to the lowest part of the sitting bones of the seat occupant, a second cushion sensor provided side by side on the left and right in front of the first cushion sensor at a position corresponding to under the thighs of the seat occupant, a first back sensor provided side by side on the left and right at a position corresponding to behind the waist of the seat occupant, and a second back sensor provided side by side on the seat back above the first back sensor,
The control unit
a movement determination unit that identifies a movement of the seated occupant based on the measurement values from at least two sensors among the first cushion sensor, the second cushion sensor, the first back sensor, and the second back sensor;
the movement determination unit determines whether the seated occupant is performing one predetermined movement among a plurality of movements stored in advance that are different from a reference posture;
The movement determination unit determines that an action of turning the upper body to the right has been performed when the pressure value of the right first cushion sensor and the pressure value of the right first back sensor become larger and the pressure value of the left first back sensor and the pressure value of the left second back sensor become smaller relative to the respective pressure values at the reference posture. a seat body having a seat cushion and a seat back;
a plurality of sensors fixed to the seat body that acquire measurement values for identifying the movement of an occupant sitting in the seat body, the plurality of sensors acquiring pressure values from the occupant sitting in the seat body as the measurement values;
A seat including a control unit connected to the sensor so as to be able to acquire the measurement value from the sensor,
The plurality of sensors include:
The seat body is provided in a symmetrical pair with respect to the center of the left and right sides of the seat body,
The seat cushion includes a first cushion sensor provided side by side on the left and right at a position corresponding to the lowest part of the sitting bones of the seat occupant, a second cushion sensor provided side by side on the left and right in front of the first cushion sensor at a position corresponding to under the thighs of the seat occupant, a first back sensor provided side by side on the left and right at a position corresponding to behind the waist of the seat occupant, and a second back sensor provided side by side on the seat back above the first back sensor,
The control unit
a movement determination unit that identifies a movement of the seated occupant based on the measurement values from at least two sensors among the first cushion sensor, the second cushion sensor, the first back sensor, and the second back sensor;
the movement determination unit determines whether the seated occupant is performing one predetermined movement among a plurality of movements stored in advance that are different from a reference posture;
The movement determination unit determines that an action of turning the upper body to the left has been performed when the pressure value of the left first cushion sensor and the pressure value of the left first back sensor become larger and the pressure value of the right first back sensor and the pressure value of the right second back sensor become smaller compared to the respective pressure values at the reference posture. a seat body having a seat cushion and a seat back;
a plurality of sensors fixed to the seat body that acquire measurement values for identifying the movement of an occupant sitting in the seat body, the plurality of sensors acquiring pressure values from the occupant sitting in the seat body as the measurement values;
A seat including a control unit connected to the sensor so as to be able to acquire the measurement value from the sensor,
The plurality of sensors include:
The seat body is provided in a symmetrical pair with respect to the center of the left and right sides of the seat body,
a first cushion sensor provided on the seat cushion in a position corresponding to the lowest part of the ischial bones of the seated person, and a second cushion sensor provided on the seat cushion in a position corresponding to the lower part of the thighs of the seated person, and the first cushion sensor provided on the seat cushion in a position corresponding to the lower part of the thighs of the seated person,
The control unit
a movement determination unit that identifies a movement of the seated occupant based on the measurement values from at least two of the first cushion sensor and the second cushion sensor,
the movement determination unit determines whether the seated occupant is performing one predetermined movement among a plurality of movements stored in advance that are different from a reference posture;
The seat is characterized in that, for movements that do not distinguish between left and right, the movement determination unit identifies the movement using a pressure value obtained by adding the pressure value of the right sensor and the pressure value of the left sensor. a seat body having a seat cushion and a seat back;
a plurality of sensors fixed to the seat body that acquire measurement values for identifying the movement of an occupant sitting in the seat body, the plurality of sensors acquiring pressure values from the occupant sitting in the seat body as the measurement values;
A seat including a control unit connected to the sensor so as to be able to acquire the measurement value from the sensor,
The plurality of sensors include:
The seat body is provided in a symmetrical pair with respect to the center of the left and right sides of the seat body,
The seat cushion includes a first cushion sensor provided side by side on the left and right at a position corresponding to the lowest part of the sitting bones of the seat occupant, a second cushion sensor provided side by side on the left and right in front of the first cushion sensor at a position corresponding to under the thighs of the seat occupant, a first back sensor provided side by side on the left and right at a position corresponding to behind the waist of the seat occupant, and a second back sensor provided side by side on the seat back above the first back sensor,
The control unit
a movement determination unit that identifies a movement of the seated occupant based on the measurement values from at least two sensors among the first cushion sensor, the second cushion sensor, the first back sensor, and the second back sensor;
The operation determination unit determines that a shoulder blade pressing operation is occurring when the pressure value of the first cushion sensor increases, the pressure value of the second back sensor increases, and the pressure value of the first back sensor is smaller than a predetermined threshold value, relative to the respective pressure values in the reference posture. The seat according to claim 1 to claim 7 and claim 9, characterized in that, for movements that do not distinguish between left and right, the movement determination unit identifies the movement using a pressure value that is the sum of the pressure value of the right sensor and the pressure value of the left sensor .