Sheet

Abstract

To provide a seat capable of specifying the action of a seated person.SOLUTION: A seat comprises a seat body, a sensor (pressure sensors PS1-PS6) for acquiring a measured value for specifying the action of a seated person who is sitting on the seat body and a control part 100 connected to the sensor so that the measured value can be acquired from the sensor. The control part 100 comprises an action instruction part 121 for instructing so as to execute the prescribed action to the seated person and an action determination part 122 for specifying the action of the seated person based on the measured value from the sensor, and the action determination part 122 determines whether or not the seated person executes the prescribed action after an instruction by the action instruction part 121.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a seat capable of identifying the movement of an occupant. [Background technology]

[0002] BACKGROUND ART Conventionally, there is known a device that mounts a pressure sensor or the like on a driver's seat to estimate the fatigue state of the seated occupant, and moves the seat based on the estimation result (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-065504 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional seats attempt to relieve fatigue by moving the seat, but such passive exercise is insufficient to fully relieve fatigue. The inventors of the present application believed that encouraging seat occupants to engage in active exercise would not only effectively relieve fatigue but also provide a more enjoyable journey. Furthermore, while long-distance travel on vehicles such as airplanes and long-distance buses poses the risk of traveler's thrombosis, enjoyable exercise on board may potentially help prevent traveler's thrombosis.

[0005] Furthermore, even in seats other than those used in vehicles, exercising while sitting could potentially contribute to a healthier lifestyle.

[0006] However, conventional seats cannot identify the movements of the seated person, making it impossible to realize such an enjoyable seat.

[0007] Therefore, an object of the present invention is to provide a seat that is capable of identifying the movements of an occupant. [Means for solving the problem]

[0008] The present invention, which solves the above-mentioned problems, provides a seat including a seat body, a sensor that acquires measurements for identifying the motion of an occupant sitting in the seat body, and a control unit connected to the sensor so as to be able to acquire the measurements from the sensor. The control unit has an action instruction unit that instructs the occupant to perform a predetermined motion, and an action determination unit that identifies the motion of the occupant based on the measurements from the sensor, and the action determination unit determines whether the occupant is performing the predetermined motion after receiving an instruction from the action instruction unit.

[0009] With this configuration, the seat 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 predetermined action after the action instruction unit instructs the seat occupant to perform the predetermined action. This allows the seat occupant to actively perform an action and the seat to respond to whether the action is good or bad, making it possible to provide a seat that has an interactive relationship with the seat occupant.

[0010] In the above-described seat, it is desirable that the sensor acquires, as the measurement value, a pressure value from an occupant seated on the seat body.

[0011] According to this configuration, by acquiring the pressure value from the seated occupant, the movement of the seated occupant can be identified with high accuracy.

[0012] In the above-described seat, the action instructing unit may be configured to instruct the seated person to perform a predetermined action by using at least one of sound, light, image, video, text, vibration, and hot / cold.

[0013] In the above-described seat, when the movement determining unit determines that the seated occupant is not performing a predetermined movement, it is desirable that the movement instructing unit again instruct the seated occupant to perform the predetermined movement.

[0014] This configuration can encourage the seated occupant to take active action.

[0015] In the above-mentioned seat, if the movement determination unit determines that the magnitude of the specified movement being performed by the seated person is insufficient, it is desirable that the movement instruction unit instructs the seated person to perform the specified movement to a larger extent.

[0016] This configuration allows the seated person to exercise more, increasing the enjoyment of sitting and providing a healthy lifestyle.

[0017] In the above-mentioned seat, if the action determination unit determines that the action being performed by the seated person is different from the action instructed by the action instruction unit, it is desirable that the action instruction unit notify the seated person of the correct way to perform the action.

[0018] This configuration can encourage the seated person to engage in healthy exercise, and also encourage the seated person to perform an operation accurately when the seated person is required to perform an operation by movement. [Effects of the Invention]

[0019] According to the present invention, it is possible to identify the movement of a seated occupant.

[0020] It also encourages the occupant to be more active, increasing the enjoyment of sitting and contributing to a healthier lifestyle. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a diagram illustrating the overall configuration of a system using a vehicle seat according to an embodiment. [Figure 2] 2A to 2C are diagrams illustrating the configuration of each vehicle seat. [Figure 3] 1A and 1B are diagrams illustrating the arrangement of sensors, in which (a) is a diagram of the seat back as seen from the front, and (b) is a diagram of the seat cushion as seen from above. [Figure 4]FIG. 10 is a cross-sectional view of a seat illustrating the arrangement of sensors. [Figure 5] FIG. 1 is a block diagram illustrating the configuration of a vehicle seat and a system. [Figure 6] 10 is a table illustrating criteria for determining an action. [Figure 7] This is an example of a list of movements for a full-body course. [Figure 8] This is a message table when it is determined that the device is not operating. [Figure 9] 10 is a message table when the operation is determined to be insufficient. [Figure 10] This is a message table when it is determined that the operation is different from the instruction. [Figure 11] 10 is a flowchart illustrating an example of processing by a control unit. [Figure 12] 10 is a flowchart of a process of motion determination. [Figure 13] 10 is a flowchart of the heel-lift / foot-lift determination process (right). [Figure 14] 10 is a flowchart of a process for determining upper body rotation (right). [Figure 15] 10 is a flowchart of a process for determining whether the user is straightening the back or pressing the shoulder blades. [Figure 16] 10 is an example of a menu screen. [Figure 17] This is an example of a calf exercise screen. [Figure 18] 10 is an example of a presentation screen when the movement is small. [Figure 19] 10 is an example of a presentation screen when it is determined that an operation different from the instruction is being performed. DETAILED DESCRIPTION OF THE INVENTION

[0022] 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 as 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 a control unit 100 that 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 seated occupant P. In this manner, in the vehicle CR, the control unit 100 and the plurality of seat bodies S0 constitute the system SYS of the vehicle seat S.

[0023] 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 are provided with a plurality of pressure sensors PS1 to PS6 under their surfaces. The pressure sensors PS1 to PS6 are sensors that acquire measurements for identifying the movement of the seat occupant P sitting in the seat body S0, and more specifically, are sensors that acquire pressure values ​​from the seat occupant P sitting in the seat body S0. The control unit 100 is connected to the pressure sensors PS1 to PS6 so as to be able to acquire pressure values ​​from each of the pressure sensors PS1 to PS6.

[0024] 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. 3(b), the seat cushion S1 is provided with pressure sensors PS1 to PS3.

[0025] The pressure sensor PS1 is provided at a position corresponding to the lowest part of the ischial bones of the seated occupant P. This position is where the weight of the seated occupant P is greatest. The pressure sensor PS1 can be disposed, for example, at a position 60 to 70 mm, for example 65 mm, away from the center C of the vehicle seat S on both sides.

[0026] The pressure sensor PS2 is disposed slightly in front of the pressure sensor PS1, and can be disposed, for example, at a position 50 to 60 mm, e.g., 55 mm, forward of the pressure sensor PS1 and 65 to 75 mm, e.g., 70 mm, to the left and right of the center C. The pressure sensors PS1 and PS2 are an example of first cushion sensors disposed in positions on the seat cushion S1 corresponding to the buttocks of the 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).

[0027] Both the pressure sensor PS1 and the pressure sensor PS2 are for measuring pressure from the buttocks of the seated occupant 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 will also be collectively referred to as the first cushion sensor SC1.

[0028] The pressure sensor PS3 is disposed far forward from the pressure sensors PS1 and PS2. The pressure sensor PS3 is an example of a second cushion sensor located in front of the first cushion sensor SC1 on the seat cushion S1. In the following description, the pressure sensor PS3 is also referred to as the second cushion sensor SC2.

[0029] 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 located, for example, 110 to 130 mm, for example 120 mm in front of pressure sensor PS2 (175 mm in front of pressure sensor PS1), and 65 to 75 mm, for example 70 mm to the left and right of center C.

[0030] 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 may 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.

[0031] 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 at a position corresponding to the back of the waist of the seated occupant P. Pressure sensor PS4 can be disposed, for example, at a position 45 to 55 mm, for example 50 mm, to the left and right from the left-right center C of the vehicle seat S.

[0032] Pressure sensor PS5 is located slightly above pressure sensor PS4, and can be located, 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 located 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).

[0033] Both the pressure sensor PS4 and the pressure sensor PS5 are for measuring pressure from the lower back of the seated occupant 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 will also be collectively referred to as the first back sensor SB1.

[0034] The pressure sensor PS6 is disposed above and spaced apart from the pressure sensors PS4 and 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.

[0035] Pressure sensor PS6 is located corresponding to the upper part of the back of seated person P and is capable of measuring pressure values ​​from the shoulder blades of seated person P. Pressure sensor PS6 can be placed, for example, 190 to 210 mm, for example 200 mm above pressure sensor PS5 (275 mm above pressure sensor PS1), and 95 to 105 mm, for example 100 mm, to the left and right of center C.

[0036] 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 may 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.

[0037] In the following description, the pressure values ​​acquired by the pressure sensors PS1 to PS6 are referred to as P1 to P6, respectively, and the right and left pressure values ​​are referred to as P1 to P6, respectively. R , P1 L The pressure sensors PS1 to PS6 are indicated by the subscripts R and L, as in the example. Note that the pressure sensors PS1 to PS6 are elements whose electrical resistance changes depending on, for example, external pressure, and the greater the pressure value, the higher (or lower) the voltage of the detection signal. Therefore, although the magnitude of pressure values ​​is actually compared based on the magnitude of voltage values, this specification will be described in terms of determining the magnitude of pressure values ​​for ease of understanding.

[0038] 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 has a CPU, ROM, RAM, rewritable nonvolatile memory, etc. (not shown), and each functional unit is realized by executing a program stored in advance.

[0039] 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 can communicate with the smartphone SP via the communication unit 130 and the short-range communication device 3A, and can provide predetermined screens and sounds to the smartphone SP in cooperation with an app installed on the smartphone SP, as well as obtain data entered on the smartphone SP.

[0040] The measurement value acquiring unit 110 has a function of acquiring pressure measurement values ​​from each of the pressure sensors PS1 to PS6 at regular control cycles. The measurement values ​​acquired by the measurement value acquiring unit 110 are stored in the storage unit 190 and used by the processing unit 120. The storage unit 190 is used to store data necessary for calculations, processing, etc. as needed.

[0041] The processing unit 120 is a 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.

[0042] The action instruction unit 121 instructs the seated person P to perform a predetermined action. In this embodiment, the action to be instructed is an action 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.

[0043] When instructing an action according to the action list, the action instruction unit 121 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. Note that the app on the smartphone SP stores image data and audio data corresponding to this action code MC, and outputs an image including text (including a changing image, i.e., a video) on the screen of the smartphone SP, and outputs an action instruction by music and voice (i.e., sound, light, image, video, and text) from the speaker of the smartphone SP.

[0044] 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 the calf exercises (heel lifting exercises in the narrow sense). For example, the calf exercise may be expressed in the app as "please lift your heels." However, when performing the exercises without instructing (distinguishing) both the calf exercises and the leg lifting exercises, the heel lifting exercise may also be referred to as including both the calf exercises and the leg lifting exercises (heel lifting exercises in the broad sense). Below, we will explain whether the heel lifting exercise is meant in the narrow sense or the broad sense, as appropriate.

[0045] As mentioned above, leg lifting is an exercise in which you lift your feet until they are off the floor.

[0046] The back stretching exercise is an exercise in which the spine is stretched vertically and the back is moved away from the seat back S2.

[0047] The shoulder blade pressing is an exercise in which the shoulder blades are pressed against the seat back S2.

[0048] The upper body rotation 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 the seat back S2 is attached. For example, when rotating to the right, the right shoulder is attached to the seat back S2 and the left shoulder is lifted off the seat back S2.

[0049] When the movement determination unit 122 determines that the seated occupant P has not performed the predetermined movement instructed by the movement instruction unit 121, the movement instruction unit 121 instructs the seated occupant P to perform the predetermined movement again. As will be described later, in this embodiment, if the action determination unit 122 cannot identify the action, it sets the action determination code MCJ, which indicates the result of determining the action, to 0. Therefore, if MCJ is 0, the action instruction unit 121 again instructs via the smartphone SP to perform a specified action (an action corresponding to the data read from the action list).

[0050] 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 storage unit 190. This message is stored in association with each action code MC, for example, as shown in FIG.

[0051] Furthermore, when the movement determination unit 122 determines that the magnitude of the predetermined movement 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 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 instruction 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.

[0052] 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 act. 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.

[0053] The message that the action instructing unit 121 outputs to the smartphone SP when the action performed by the seated occupant P is different from the action instructed by the action instructing unit 121 is stored in the storage unit 190. For example, as shown in Fig. 10, this message is stored in association with each combination of each action code MC and each action determination data.

[0054] The movement determination unit 122 is configured to identify the movement of the seated occupant P based on the outputs 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.

[0055] The movement determination criteria are shown in detail in a table in Figure 6. Specifically, the movement determination unit 122 determines that a heel-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 increases and the pressure value P3 of the pressure sensor PS3 of the second cushion sensor SC2 on the same side decreases, relative to the pressure values ​​in the reference posture.

[0056] Here, the reference posture is a state in which the seated person 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 the standard pressure sensors PS1 to PS6 in this state are stored in the storage unit 190. For the seated person 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 person 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.

[0057] 6, SC1 (PS2) indicates that the value of pressure sensor PS2, one of the two pressure sensors PS1 and PS2 (four sensors in total, one on each side) of the first cushion sensor SC1, is used for the determination. In this embodiment, for example, in the case of heel-up, 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 of the measurement values ​​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 of the measurement values ​​of the two pressure sensors PS4 and PS5 may also be used.

[0058] 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 left and right 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 left and right side is also used as a condition for determining a leg lifting movement.

[0059] The movement determination unit 122 determines that a 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, a decrease in the pressure value P6 of the second back sensor SB2 is also used as a condition for determining that a back-stretching movement has been performed. 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.

[0060] The movement 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.

[0061] The operation determination unit 122 calculates the pressure value P1 of the pressure sensor PS1 of the right first cushion sensor SC1 for each pressure value in the reference posture. R and the pressure value P4 of the pressure sensor PS4 of the first right back sensor SB1 R The pressure value P4 of the pressure sensor PS4 of the first left back sensor SB1 increases. L and the pressure value P6 of the second left back sensor SB2 L When the pressure value P1 of the pressure sensor PS1 of the left first cushion sensor SC1 becomes smaller, it is determined that the upper body has been turned to the right. L and the pressure value P4 of the pressure sensor PS4 of the first left back sensor SB1 L The pressure value P4 of the pressure sensor PS4 of the first back sensor SB1 on the right increases. R and the pressure value P6 of the right second back sensor SB2 R When the value of the rotation angle of the upper body decreases, it is determined that the upper body has been rotated to the left.

[0062] 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 storage unit 190.

[0063] 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 is sufficiently large, to 1 if it is not large enough, and to 0 if no movement is being performed.

[0064] Next, an example of the process performed by the control unit 100 to provide an exercise game will be described with reference to FIGS. As shown in Fig. 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).

[0065] When the seated person P selects a menu by pressing button B01 or B02 (S12, Yes), the processing unit 120 causes the action instruction unit 121 to read an action code MC from the action list (S21) and determine 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 accordance with 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 the seated person P keep the rhythm. Here, in FIG. 17, as an example, an image of calf exercise (heel lifting exercise in the narrow sense) and an image of the right heel being lifted is displayed.

[0066] 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 FIG. 12, the movement determination process begins by initializing both the movement determination code MCJ and the size data MS to 0.

[0067] Then, the heel lift / foot lift determination (right) (step S200) is processed. In this determination, as shown in FIG. 13, first, the pressure value P2 R It is determined whether the pressure value P2 is greater than the threshold value P2th1 (S201). R If the pressure value P3 of the right pressure sensor PS3 is greater than the threshold value P2th1 (S201, Yes), R It is determined whether the pressure value P3 is smaller than the threshold value P3th (S202). R If is smaller than the threshold value 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 or not). If the determination is No in step S201 or step S202, the heel or foot is not being raised (in the narrow sense), so step S200 is terminated. At this time, both the movement determination code MCJ and the size data MS remain 0.

[0068] After the determination in step S202 is Yes, the operation determination unit 122 determines the pressure value P4 of the right pressure sensor PS4. R If it is greater than the threshold value P4th (S203, Yes), the pressure value P6 of the left pressure sensor PS6 is further L It is determined whether or not is smaller than the threshold value P6th (S204). Pressure value P6 L If P6th is smaller than the threshold value P6th (S204, Yes), lifting the foot from the floor causes the right lower back to be pressed against the seat back S2, and the left shoulder to move away from the seat back S2, so it can be determined that this 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).

[0069] After step S211 or step S212, the operation determination unit 122 determines the pressure value P2 Ris greater than a threshold value P2th2 (S220). Here, the threshold value P2th1 is a value for determining whether or not the exercise is at least sufficient to be considered as heel lifting, and the threshold value P2th2 is a value for determining whether or not the heel is sufficiently lifted. In other words, P2th2 is greater than P2th1.

[0070] Pressure value P2 R If the pressure value P2 is greater than the threshold value P2th2 (S220, Yes), it is considered that the movement is of sufficient magnitude, so the magnitude data MS is set to 2 (S222). R If is not greater than the threshold value P2th2 (S220, No), the magnitude of the movement is considered to be insufficient, and the magnitude data MS is set to 1 (S221).

[0071] This completes step S200 for determining whether the heel is raised or the foot is raised (right), and the process returns to Fig. 12 to execute step S300 for determining whether the heel is raised or the foot is raised (left). Step S300 differs from step S200 in that the pressure values ​​to be determined are reversed from right to left, and therefore a detailed explanation will be omitted.

[0072] 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 has already been determined, and step S400 is terminated. If MCJ is 0 (S401, Yes), the pressure value P1 of the right pressure sensor PS1 R It is determined whether the pressure value P1 is greater than the threshold value P1th1 (S410). R is greater than the threshold value P1th1 (S410, Yes), and the pressure value P4 R It is determined whether the pressure value P4 is greater than the threshold value P4th1 (S411). R is greater than the threshold value P4th1 (S411, Yes), and the pressure value P4 LIt is determined whether the pressure value P4 is smaller than the threshold value P4th2 (S412). Note that P4th2 is a value smaller than P4th1. L is smaller than the threshold value P4th2 (S412, Yes), and further, the pressure value P6 of the left pressure sensor PS6 L It is determined whether the pressure value P6 is smaller than the threshold value P6th (S413). L If is smaller than the threshold value P6th (S413, Yes), 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 determination 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 ended without changing the movement determination code MCJ and the size data MS.

[0073] After the operation determination code MCJ is set to 5R, the operation determination unit 122 determines the pressure value P1 R is greater than a threshold value P1th2 (S430). Here, the threshold value P1th1 is a value for determining whether or not the exercise is such that it can be said that the upper body is at least being rotated, and the threshold value P1th2 is a value for determining whether or not the upper body is being rotated sufficiently. In other words, P1th2 is greater than P1th1.

[0074] Pressure value P1 R If the pressure value P1 is greater than the threshold value P1th2 (S430, Yes), it is considered that the movement is of sufficient magnitude, so the magnitude data MS is set to 2 (S432). R If is not greater 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).

[0075] This completes step S400 for determining whether the body is rotating (right), and the process returns to Fig. 12 to execute step S500 for determining whether the body is rotating (left). Step S500 differs from step S400 in that the pressure values ​​to be determined are reversed from right to left, and therefore a detailed description will be omitted.

[0076] After step S500, step S600 is executed to determine whether the user is straightening his or her back or pressing 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 has already been determined, and step S600 is terminated. If MCJ is 0 (S601, Yes), the pressure value P1 of the right pressure sensor PS1 R and the pressure value P1 of the left pressure sensor PS1 L It is determined whether the sum of the pressure values ​​P1 is greater than a threshold value P1th3 (S610). R and pressure value P1 L If the sum of these is not greater than the threshold value P1th3 (S610, No), it is considered 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. The pressure value P1 R and pressure value P1 L If the sum is greater than the threshold value P1th3 (S610, Yes), the pressure value P6 of the right pressure sensor PS6 is R and the pressure value P6 of the left pressure sensor PS6 L It is determined whether the sum is greater than a threshold value P6th3 (S611).

[0077] Pressure value P6 of right pressure sensor PS6 R and the pressure value P6 of the left pressure sensor PS6 L If the sum of the pressure values ​​P5 of the left and right pressure sensors PS5 is not greater than the threshold value P6th3 (S611, No), it cannot be said that the shoulder blades are being pressed against the seat back S2, so the movement determination unit 122 uses the pressure values ​​P5 of the left and right pressure sensors PS5 to determine whether the user is straightening their back. R ,P5 L and the pressure value P6 of the left and right pressure sensors PS6 R ,P6 LThe P56 is calculated by adding the above (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), the upper body has not been sufficiently separated from the seat back S2 to be considered upright, and step S600 is terminated without changing either the movement determination code MCJ or the size data MS, both of which remain at 0.

[0078] 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). Then, the movement determination unit 122 determines whether P56 is smaller than a threshold value P56th2 (S625). Here, the threshold value P56th2 is a value 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.

[0079] In step S611, the pressure value P6 R and pressure value P6 L If it is determined that the sum of the pressure values ​​P4 of the right pressure sensor PS4 is greater than the threshold value P6th3 (S611, Yes), it can be said that the shoulder blades are pressed against the seat back S2. R and the pressure value P4 of the left pressure sensor PS4 L It is determined whether the sum is smaller than a threshold value P4th3 (S630). Pressure value P4 R and pressure value P4 LIf the sum is not smaller than the threshold value P4th3 (S630, No), the person is not pressing the shoulder blades against the seat back S2 but rather the entire back, so step S600 ends without changing the motion determination code MCJ and the size data MS, which remain at 0.

[0080] Pressure value P4 R and pressure value P4 L If the sum 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, so the movement determination code MCJ is set to 4 (S631). And the pressure value P6 R and pressure value P6 L It is determined whether the sum of the pressure values ​​P6 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 against the seat back S2 with sufficient force, and is a value greater than the threshold value P6th3. R and pressure value P6 L If the sum of these values ​​is not greater than the threshold value P6th4 (S632, No), the force pressing the shoulder blades against the seat back S2 is insufficient, so the magnitude data MS is set to 1 (S633), and the pressure value P6 R and pressure value P6 L If the sum is greater than the threshold value P6th4 (S632, Yes), the force pressing the shoulder blades against the seat back S2 is sufficient, so the magnitude data MS is set to 2 (S634), and step S600 is terminated. This ends step S100 of motion determination.

[0081] Returning to FIG. 11, after step S100 of motion determination, the motion instruction unit 121 determines whether the motion determination code MCJ is 0, and if it is 0 (S30, Yes), outputs a message (S31). For example, as shown in FIG. 17, when performing calf exercises, if the motion determination code MCJ is 0, the motion instruction unit 121 refers to the message table in FIG. 8, reads out a message corresponding to motion 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 a predetermined operation.

[0082] In step S30, if it is determined 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.

[0083] 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 to make the movement larger (S42). For example, if the magnitude of the movement in the calf exercise is insufficient, the message table in FIG. 9 is referenced, a message corresponding to the 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 seems 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 becomes easier for the seated occupant P to understand what he or she should do. After outputting the message, the process returns to step S21 to instruct the next movement.

[0084] 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-raising exercise during a leg-raising 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.

[0085] After reading the operation code MC (S21), if the operation code MC is "EOL" (S22, Yes), the operation list ends, and the process is terminated by displaying an end screen on the smartphone SP (S60, not shown).

[0086] 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 at least four sensors: the first cushion sensor SC1 and the second cushion sensor SC2, which are spaced apart in the front and rear directions on 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 directions on the seat back S2.

[0087] The vehicle seat S can determine whether the seated person P is performing the predetermined action after the control unit 100 instructs the seated person P to perform the action via the action instructing unit 121 and the action determining unit 122 instructs the seated person P to perform the predetermined action via the action instructing unit 121. This allows the seated person P to actively perform the action and the vehicle seat S to respond regarding the quality of the action, making it possible to provide a seat that has an interactive relationship with the seated person P. If the seated person P can be encouraged to perform active actions by providing an exercise game or the like as in the above embodiment, fatigue can be effectively alleviated and the journey can be made more enjoyable. In particular, while traveler's thrombosis is a problem on long-distance travels such as airplanes and long-distance buses, enjoying exercise on the vehicle may be able to suppress traveler's thrombosis.

[0088] According to the vehicle seat S of this embodiment, by acquiring the pressure value from the seated occupant P, the movement of the seated occupant P can be identified with high accuracy.

[0089] If the action determination unit 122 determines that the seated person P is not performing the predetermined action, the action instruction unit 121 again instructs the seated person P to perform the predetermined action, thereby encouraging the seated person P to perform an active action.

[0090] When the movement determination unit 122 determines that the magnitude of the predetermined movement performed by the seated person P is insufficient, the movement instruction unit 121 instructs the seated person P to perform the predetermined movement in a larger scale, thereby enabling the seated person P to exercise more, increasing the enjoyment of sitting and providing a healthy lifestyle.

[0091] 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 121, the action instruction unit 121 notifies the seated person P of the correct way to move, thereby encouraging the seated person P to exercise in a healthy manner. Also, in the above embodiment, an exercise game has been described as an example, but if the seated person P is to operate another device such as a smartphone SP or a navigation system in accordance with his or her action, accurate operation can be encouraged by notifying the seated person P of the correct way to move.

[0092] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. The specific configurations can be appropriately changed without departing from the spirit of the present invention.

[0093] For example, in the above embodiment, the action instruction unit instructs the seated person P to perform a predetermined action by sound, light, image, video, and text, but the instruction may also be given by vibration or hot / cold. Hot / cold refers to the stimulation of a hot or cold sensation to the seated person P, and the stimulation can be given, for example, by heating the seat surface with a heater or blowing air on the seated person P with a blower. In this specification, text includes Braille.

[0094] 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.

[0095] In the above embodiment, an exercise game has been 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.

[0096] In the above embodiment, the control unit is a device separate from the smartphone, but the control unit may be configured by both a device provided in the seat or the vehicle and the smartphone. In other words, the smartphone may be part of or wholly part of the seat.

[0097] In the above embodiment, the control unit and the smartphone are connected by wireless communication, but they may be connected by wired communication.

[0098] In the above embodiment, for actions such as straightening the back, where there is no distinction between left and right, the pressure value used is the sum of the left pressure value and the right pressure value, but it is also possible to use the average value of the left pressure value and the right pressure value, or to determine whether the right pressure value and the left pressure value each satisfy a condition, and determine that the action is being performed if at least one of them satisfies the condition, or if both satisfy the condition.

[0099] Measurements other than pressure values ​​can also be obtained to determine the occupant's movements, such as measurements from a capacitance sensor.

[0100] In the above embodiment, a seat mounted in a vehicle is exemplified as the 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, etc. other than a vehicle.

[0101] Furthermore, the elements described in the embodiments and modifications described in this specification can be implemented in appropriate combinations. [Explanation of symbols]

[0102] 100 control section 110 Measurement value acquisition unit 120 Processing section 121 Operation instruction section 122 Operation judgment section P seated person PS1~PS6 pressure sensors S Vehicle seat S1 seat cushion S2 seat back SB1 1st back sensor SB2 Second back sensor SC1 1st cushion sensor SC2 Second cushion sensor SP Smartphone SYS system

Claims

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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 movement determination unit determines that an movement of turning the upper body to the right has been made 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.

7. 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.

8. 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.

9. 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.

10. 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.