Sheet

Abstract

To provide a seat which can specify action of a seated person.SOLUTION: A seat includes: a sensor including a first cushion sensor SC1 disposed at a position, which corresponds to a hip of a seated person, of a seat cushion S1, a second cushion sensor SC 2 located at the front relative to the first cushion sensor SC1 in the seat cushion S1, a first back sensor SB1 disposed at a lower part of the seat back S2, and a second back sensor SB2 disposed above the first back sensor SB1 in the seat back S2; and a control unit 100 connected to the sensor so as to be able to obtain pressure values from the sensors. The control unit 100 is configured to specify action of the seated person based on outputs of at least the two sensors of the first cushion sensor SC1, the second cushion sensor SC2, the first back sensor SB1, and the second back sensor SB2.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a motion identification device capable of identifying the motion of a seated occupant and a vehicle. [Background technology]

[0002] 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 a seated occupant and moves the seat based on the estimation result (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-065504 A Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional seats are designed to relieve fatigue by moving the seat, but such passive exercise is not sufficient to relieve fatigue. Instead, the inventors of the present application thought that by encouraging the seat occupant to exercise actively, fatigue could not only be effectively relieved but also a more enjoyable journey could be realized. In addition, there is a problem of traveler's thrombosis on long-distance travel vehicles such as airplanes and long-distance buses, and it is possible that traveler's thrombosis can be suppressed by enjoying exercise on the vehicle.

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

[0006] However, with conventional seats, it was not possible to 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 movement identification device and a vehicle capable of identifying the movement of a seated occupant. [Means for solving the problem]

[0008] The present invention, which solves the above-mentioned problems, is a seat comprising a seat body having a seat cushion and a seat back, a plurality of sensors for acquiring pressure values ​​from an occupant sitting on the seat body, the sensors including a first cushion sensor arranged at a position on the seat cushion corresponding to the buttocks of the occupant, a second cushion sensor located in front of the first cushion sensor on the seat cushion, a first back sensor arranged at a lower part of the seat back, and a second back sensor arranged above the first back sensor on the seat back, and a control unit connected to the sensors so as to acquire pressure values ​​from each of the plurality of sensors. The control unit is configured to identify the movement of the seated occupant based on outputs of at least two of the first cushion sensor, the second cushion sensor, the first back sensor, and the second back sensor.

[0009] With this configuration, it is possible to identify the movement of the seated occupant by combining pressure values ​​from at least two of at least four sensors, namely, a first cushion sensor and a second cushion sensor spaced apart in the front and rear on the seat cushion, and a first back sensor and a second back sensor spaced apart in the top and bottom on the seat back.

[0010] In the above-mentioned seat, the control unit can determine that a heel-raising action has been performed when the pressure value of the first cushion sensor becomes larger and the pressure value of the second cushion sensor becomes smaller relative to the respective pressure values ​​in the reference posture.

[0011] In the above-mentioned seat, the control unit can determine that a leg-raising action has been performed when the pressure values ​​of the first cushion sensor and the first back sensor become larger and the pressure value of the second cushion sensor becomes smaller relative to the respective pressure values ​​in the reference posture.

[0012] In the above-mentioned seat, the control unit can determine that the back-stretching action 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 relative to the respective pressure values ​​in the reference posture.

[0013] In the above-mentioned seat, the control unit can determine that an action has been performed to press the shoulder blades against the seat back when the pressure values ​​of the first cushion sensor and the second back sensor become larger and the pressure value of the first back sensor becomes smaller relative to the respective pressure values ​​in the reference posture.

[0014] In the seat described above, the first back sensor includes at least one right first back sensor and at least one left first back sensor, the first cushion sensor includes at least one right first cushion sensor and at least one left first cushion sensor, and the second back sensor includes at least one right second back sensor and at least one left second back sensor. In this case, the control unit can determine that a motion of turning the upper body to the right has been performed when the pressure values ​​of the right first cushion sensor and the right first back sensor are increased and the pressure values ​​of the left first back sensor and the left second back sensor are decreased relative to the respective pressure values ​​in the reference posture, and can determine that a motion of turning the upper body to the left has been performed when the pressure values ​​of the left first cushion sensor and the left first back sensor are increased and the pressure values ​​of the right first back sensor and the right second back sensor are decreased.

[0015] It is desirable that the second back sensor be located above a position 300 mm above the seating surface of the seat cushion along the seating surface of the seat back.

[0016] According to this configuration, the second back sensor can detect pressure from the shoulders of a seated occupant.

[0017] It is desirable that the second cushion sensor be located forward of a position 280 mm forward along the seating surface of the seat cushion from the seating surface of the seat back.

[0018] According to this configuration, the second cushion sensor can effectively detect the up and down movements of the thighs. Effect of the Invention

[0019] According to the invention, it is possible to determine the movement of an occupant by a combination of pressure values ​​from at least two sensors. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a diagram illustrating an overall configuration of a system using a vehicle seat according to an embodiment. [Diagram 2] FIG. 2 is a diagram illustrating a configuration of each vehicle seat. [Diagram 3] 1A and 1B are diagrams for explaining 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. 4 is a cross-sectional view of a sheet illustrating the arrangement of sensors. [Diagram 5] FIG. 1 is a block diagram illustrating a configuration of a vehicle seat and a system. [Figure 6] 11 is a table illustrating criteria for determining an operation. [Figure 7] 13 is an example of a movement list for a full body course. [Figure 8] This is a message table when it is determined that the device is not operating. [Figure 9] 13 is a message table when an operation is determined to be insufficient. [Figure 10] This is a message table when it is determined that an operation different from that instructed is being performed. [Figure 11] 10 is a flowchart illustrating an example of a process of a control unit. [Figure 12] 13 is a flowchart of a process of motion determination. [Figure 13] 13 is a flowchart of a heel-lifting / foot-lifting determination process (right). [Figure 14] 13 is a flowchart of a process for determining upper body rotation (right). [Figure 15] 13 is a flowchart of a process for determining whether the user is straightening the back or pressing the shoulder blades. [Figure 16] 13 is an example of a menu screen. [Figure 17] This is an example of a calf exercise screen. [Figure 18] 13 is an example of a presentation screen when the movement is small. [Figure 19] 13 is an example of a presentation screen when it is determined that an operation different from that instructed is being performed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. As shown in Fig. 1, a vehicle seat S as an example of a seat of the present invention is configured as a vehicle seat mounted in, for example, a vehicle CR. The vehicle seat S is composed of a seat body S0 and a control unit 100. The vehicle CR is provided with vehicle seats S in, for example, four seats, two front seats and two rear seats. The vehicle CR is 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 person 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.

[0022] 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 obtain measurement values ​​for identifying the movement of the seated occupant P sitting on the seat body S0, and more specifically, are sensors that obtain pressure values ​​from the seated occupant P sitting on the seat body S0. The control unit 100 is connected to the pressure sensors PS1 to PS6 so as to be able to obtain pressure values ​​from each of the pressure sensors PS1 to PS6.

[0023] The pressure sensors PS1 to PS6 are provided in pairs symmetrically on the left and right sides of the vehicle seat S with respect to the center of the left and right sides. Specifically, as shown in FIG. 3(b), the seat cushion S1 is provided with pressure sensors PS1 to PS3.

[0024] 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 subjected to the greatest weight of the seated occupant P. The pressure sensor PS1 can be disposed, for example, at a position 60 to 70 mm, for example 65 mm, away from the left-right center C of the vehicle seat S on both sides.

[0025] 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 a first cushion sensor disposed at a position corresponding to the buttocks of the seated occupant P on the seat cushion S1. The first cushion sensor includes at least one right cushion sensor (pressure sensors PS1, PS2) and at least one left cushion sensor (pressure sensors PS1, PS2).

[0026] 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 are collectively referred to as the first cushion sensor SC1.

[0027] 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 in the seat cushion S1. In the following description, the pressure sensor PS3 is also referred to as the second cushion sensor SC2.

[0028] The pressure sensor PS3 is located under the thighs of the seated person P and is capable of measuring pressure values ​​from the thighs of the seated person P. The pressure sensor PS3 can be disposed, for example, 110 to 130 mm, for example 120 mm in front of the pressure sensor PS2 (175 mm in front of the pressure sensor PS1), and 65 to 75 mm, for example 70 mm to the left and right of the center C.

[0029] As shown in FIG. 4, the second cushion sensor SC2 is preferably located forward of a position E1 that is 280 mm forward from the seat surface S21 of the seat back S2 along the seat surface S11 of the seat cushion S1. The first cushion sensor SC1 is located behind the position E1. The position E1 here 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) can be adjusted, any shape may satisfy this requirement. By arranging the second cushion sensor SC2 at such a position, the second cushion sensor SC2 can detect the up and down movement of the thighs of the seated person P well.

[0030] 2 and 3(a), the seat back S2 is provided with pressure sensors PS4 to PS6. The pressure sensor PS4 is provided at a position corresponding to the back of the waist of the seated occupant P. The pressure sensor PS4 can be disposed, for example, at a position 45 to 55 mm, for example 50 mm, away from the left-right center C of the vehicle seat S on the left and right.

[0031] The pressure sensor PS5 is disposed slightly above the pressure sensor PS4, and may be disposed, for example, at a position 70 to 80 mm, e.g., 75 mm, above the pressure sensor PS4, and 85 to 95 mm, e.g., 90 mm, to the left and right of the center C. The pressure sensors PS4 and PS5 are an example of a first back sensor disposed at the lower part of the seat back S2. The first back sensor includes at least one right back sensor (pressure sensors PS4, PS5) and at least one left back sensor (pressure sensors PS4, PS5).

[0032] Both the pressure sensor PS4 and the pressure sensor PS5 are for measuring pressure from the lower back of the seated person P, and only one of them may be provided. Therefore, in the following description, for convenience, the pressure sensor PS4 and the pressure sensor PS5 are collectively referred to as the first back sensor SB1.

[0033] The pressure sensor PS6 is disposed above and far away 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.

[0034] The pressure sensor PS6 is located corresponding to the upper part of the back of the seated person P and can measure pressure values ​​from the shoulder blades of the seated person P. The pressure sensor PS6 can be disposed, for example, 190 to 210 mm, for example 200 mm above the pressure sensor PS5 (275 mm above the pressure sensor PS1), and 95 to 105 mm, for example 100 mm away from the center C on the left and right.

[0035] As shown in FIG. 4, the second back sensor SB2 is preferably located above a position E2 that is 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 the position E2. The position E2 here is measured by the dimension of one ruler M21 of an L-shaped curved ruler M2 when one ruler M21 is placed along the seat surface S21 of the seat back S2 and the other ruler M22 is placed against the seat surface S11 of the seat cushion S1. If the shape of the seat back S2 (e.g., the lumbar support) can be adjusted, any shape may satisfy this requirement. By arranging the second back sensor SB2 at such a position, the second back sensor SB2 can detect the pressure from the shoulder of the seated person P.

[0036] In the following description, the pressure values ​​acquired by the pressure sensors PS1 to PS6 are designated as P1 to P6, respectively, and the right and left pressure values ​​are designated as P1 to P6. R , P1 L The 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, the magnitude of pressure values ​​is actually compared based on the magnitude of voltage values, but in this specification, for ease of understanding, it will be described in terms of determining the magnitude of pressure values.

[0037] 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, a ROM, a RAM, a rewritable non-volatile memory, etc. (not shown), and each functional unit is realized by executing a program stored in advance.

[0038] 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 the smartphone SP with a predetermined screen and sound in cooperation with an application installed in the smartphone SP, and can also obtain data inputted on the smartphone SP.

[0039] 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 appropriately store data required for calculations, processing, and the like.

[0040] 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 progress of the game according to a pre-stored program. The processing unit 120 has a movement instruction unit 121 and a movement determination unit 122.

[0041] The motion instruction unit 121 is a part that instructs the seated person P to perform a predetermined motion. In this embodiment, the motion to be instructed is a motion that is pre-stored for each menu of the gymnastics game. For example, the menu of the gymnastics game includes a full body course and a lower body course, and the full body course is stored as a motion list as shown in FIG. 7. In the motion list, the order of the motion "No." is stored in association with the motion code MC and the time [ms] for performing the motion. For example, the first motion "No. 1" has a motion code MC of "1R" that lasts for 1000 ms, and the next motion "No. 2" has a motion code MC of "1L" that lasts for 1000 ms. As shown in FIG. 6, each motion code means "1R" and "1L" to raise the heels, "2R" and "2L" to raise the legs, "3" to straighten the back, "4" to press the shoulder blades, and "5R" and "5L" to rotate 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. In the operation list in Fig. 7, the operation code "0" of No. 301 means to do nothing, and "EOL" means the end of the operation list.

[0042] 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 application of the smartphone SP. Note that the application of 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 instruction for the action by music and voice (i.e., sound, light, image, video, and text) from the speaker of the smartphone SP.

[0043] Here, each operation will be described. Heel-raising is an exercise in which the heel is raised from the floor. In the present invention, heel-raising includes calf exercise in which the heel is raised while the toes are on the floor using the calf, and foot-raising exercise in which the toes are also raised from the floor using mainly the thigh muscles and iliopsoas muscles. This is because both of these are exercises in which the heel is raised. In this embodiment, as an example, the action instruction unit 121 instructs both calf exercise and leg lift exercise separately, so that the heel lift exercise means only calf exercise (heel lift exercise in the narrow sense). For example, the calf exercise is expressed as "please lift your heels" in the app. However, when the calf exercise and leg lift exercise are not instructed (not differentiated), the heel lift exercise can be called as including both calf exercise and leg lift exercise (heel lift exercise in the broad sense). Hereinafter, the heel lift exercise will be explained with supplementary explanation as appropriate as to whether it is in the narrow sense or the broad sense.

[0044] As mentioned above, the leg lift exercise involves lifting the foot off the floor.

[0045] Stretching the back is an exercise in which the back is stretched vertically and the back is moved away from the seat back S2.

[0046] Scapular pressing is an exercise in which the shoulder blades are pressed against the seat back S2.

[0047] The upper body rotation is a movement 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 still attached to it. 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.

[0048] When the movement determining unit 122 determines that the seated occupant P has not performed the predetermined movement instructed by the movement instructing unit 121, the movement instructing unit 121 instructs the seated occupant P to perform the predetermined movement again. As 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 the action determination, to 0. Therefore, when 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 out from the action list).

[0049] The message that the action instruction unit 121 outputs to the smartphone SP when the seated occupant P does not perform a predetermined action instructed by the action instruction unit 121 is stored in the storage unit 190. For example, as shown in FIG. 8, this message is stored in association with each action code MC.

[0050] Furthermore, when the movement determining unit 122 determines that the magnitude of the predetermined movement performed by the seated person P is insufficient, the movement instructing unit 121 instructs the seated person P to make the predetermined movement larger. As described below, in this embodiment, the movement determination unit 122 sets the magnitude data MS indicating 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 perform 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. 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 movement being performed by the seated person P is different from the movement instructed by the movement instruction unit, the movement instruction unit 121 notifies the seated person P of the correct way to move. 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.

[0052] A 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 the action code MC and each action determination data.

[0053] 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 among 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.

[0054] The criteria for determining the movement are shown in detail in a table in Fig. 6. Specifically, the movement determination unit 122 determines that the heel-raising 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 raised becomes larger and the pressure value P3 of the pressure sensor PS3 of the second cushion sensor SC2 on the same side becomes smaller, relative to the pressure values ​​in the reference posture.

[0055] Here, the reference posture is a state in which the seated person P normally sits with the upper body against the backrest without lifting the legs or twisting the 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 the sake of simplicity, it is assumed that one pressure value for a representative reference posture, for example, the pressure value for an average adult, is stored.

[0056] Also, in FIG. 6, SC1 (PS2) means that out of the two pressure sensors PS1, PS2 (four sensors in total on the left and right) of the first cushion sensor SC1, the value of the pressure sensor PS2 is used for the judgment. In this embodiment, for example, in the case of heel-up, the measurement value of the pressure sensor PS2 is used as the first cushion sensor SC1, but the measurement value of the pressure sensor PS1 may also be used. Similarly, in other movements, when judging a movement based on the measurement value of the first cushion sensor SC1, any of the measurement values ​​of the two pressure sensors PS1, PS2 may be used. When judging a movement based on the measurement value of the first back sensor SB1, any of the measurement values ​​of the two pressure sensors PS4, PS5 may be used.

[0057] The motion determination unit 122 determines that a leg-lifting motion has been performed when the pressure value P2 of the pressure sensor PS2 of the first cushion sensor SC1 on the side of the lifted leg and the pressure value P4 of the pressure sensor PS4 of the first back sensor SB1 increase and the pressure value P3 of the second cushion sensor SC2 on the same left and right side decreases, relative to the pressure values ​​in the reference posture. In this embodiment, to ensure further accuracy, the leg-lifting motion is also determined based on the condition that the pressure value P6 of the second back sensor SB2 on the opposite left and right side decreases.

[0058] The movement determination unit 122 determines that the movement of straightening the back has been performed when the pressure value P1 of the pressure sensor PS1 of the first cushion sensor SC1 becomes larger and the pressure value P5 of the pressure sensor PS5 of the first back sensor SB1 becomes smaller relative to the pressure values ​​in the reference posture. In this embodiment, in order to ensure accuracy, the movement of straightening the back is also determined on the condition that the pressure value P6 of the second back sensor SB2 becomes smaller. In addition, since there is no distinction between left and right when straightening the back, the pressure value used is the sum of the left pressure value and the right pressure value.

[0059] The movement determination unit 122 determines that an movement 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 relative to the respective pressure values ​​in the reference posture. In addition, since there is no distinction between left and right shoulder blade compression, the pressure value used is the sum of the left pressure value and the right pressure value.

[0060] The movement determination unit 122 detects 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 motion of turning the upper body to the right has been performed. 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 right back sensor SB1 increases. R and the pressure value P6 of the right second back sensor SB2 R When the magnitude of the movement becomes smaller, it is determined that the motion of turning the upper body to the left has been performed.

[0061] In the above determination, whether or not the pressure value has become larger or smaller than the reference posture can be determined by comparing it with each threshold value stored in advance in storage unit 190 .

[0062] 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, sets MS to 1 if the movement magnitude is insufficient, and sets MS to 0 if no movement is performed.

[0063] Next, an example of a process for providing an exercise game by the control unit 100 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). On the menu screen, for example, as shown in Fig. 16, a button B01 for "full body course" and a button B02 for "lower body course" are presented as a menu of exercises in the car, and the seated occupant P is prompted to make a selection. The processing unit 120 determines whether or not a menu has been selected (whether or not a signal indicating that a button has been pressed has been received), and waits until a selection is made (S12, No).

[0064] When the seated person P selects a menu by pressing the button B01 or the button B02 (S12, Yes), the processing unit 120 and the action instruction unit 121 read out the action code MC from the action list (S21) and determine whether the action code MC is "EOL" or not (S22). If the action code MC is not "EOL" (S22, No), the action instruction unit 121 outputs the read out action code and action time as an action instruction to the smartphone SP (S23). In accordance with this action instruction, the smartphone SP displays a text instruction "1. Calf exercise" and an image (moving image such as animation) corresponding to the action code MC on the screen DSP as shown in FIG. 17, and issues an instruction from the speaker SPK by voice such as "Use your calves to lift your heels. Right, left, right, ...". At this time, it is preferable to output music with a rhythm corresponding to the action time so that the seated person P can easily keep the rhythm. Here, in FIG. 17, as an example, a display of calf exercise (heel-raising exercise in the narrow sense) and an image of the right heel being raised are displayed.

[0065] 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 starts with initializing both the movement determination code MCJ and the size data MS to 0.

[0066] 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 the broad sense, the right heel is raised (the heel is raised regardless of whether the foot is on the floor or not). If the result of step S201 or step S202 is No, the heel or foot is not raised (in the narrow sense), so step S200 is terminated. At this time, both the motion determination code MCJ and the size data MS remain 0.

[0067] After the determination in step S202 is Yes, the operation determination unit 122 detects 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 a threshold value P6th (S204). Pressure value P6 L If is smaller than the threshold value P6th (S204, Yes), the right hip is pressed against the seat back S2 by lifting the foot off the floor, and the left shoulder is about to leave the seat back S2, so it can be determined that the motion is a leg-lifting motion. Therefore, the motion determination code MCJ is set to 2R (right leg-lifting motion) (S212). On the other hand, if the determination is No in step S203 or step S204, it is considered that the foot has not been lifted off the floor, so the motion determination code MCJ is set to 1R (right heel-lifting motion) (S211).

[0068] After step S211 or step S212, the operation determination unit 122 detects the pressure value P2 RIt is determined whether or not the threshold value P2th1 is greater than the threshold value P2th2 (S220). Here, the threshold value P2th1 is a value for determining whether or not the exercise is performed to a degree that can be said to be at least 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.

[0069] Pressure value P2 R If the pressure value P2 is greater than the threshold value P2th2 (S220, Yes), the movement is deemed to be 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, so the magnitude data MS is set to 1 (S221).

[0070] This completes step S200 of heel lift / foot lift determination (right), and the process returns to Fig. 12 to execute step S300 of heel lift / foot lift determination (left). Step S300 differs from step S200 only in that the pressure values ​​to be determined are reversed, so a detailed explanation will be omitted.

[0071] 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 If the pressure value P4 of the right pressure sensor PS4 is greater than the threshold value P1th1 (S410, Yes), R It is determined whether the pressure value P4 is greater than the threshold value P4th1 (S411). R If the pressure value P4 of the left pressure sensor PS4 is greater than the threshold value P4th1 (S411, Yes), LIt is determined whether the pressure value P4 is smaller than a threshold value P4th2 (S412). Note that P4th2 is a value smaller than P4th1. L If the pressure value P6 of the left pressure sensor PS6 is smaller than the threshold value P4th2 (S412, Yes), 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 turning to the right, and the movement determination code MCJ is set to 5R (S420). On the other hand, if the result is No in any of steps S410, S411, S412, and S413, it is considered that the upper body is not turning to the right, and step S400 is terminated without changing the movement determination code MCJ and the size data MS.

[0072] After the operation determination code MCJ is set to 5R, the operation determination unit 122 determines the pressure value P1 R It is determined whether or not the threshold value P1th2 is greater than P1th1 (S430). Here, the threshold value P1th1 is a value for determining whether or not the user is performing an exercise that can be said to be at least rotating the upper body, and the threshold value P1th2 is a value for determining whether or not the user is sufficiently rotating the upper body. In other words, P1th2 is greater than P1th1.

[0073] Pressure value P1 R If the pressure value P1 is greater than the threshold value P1th2 (S430, Yes), the motion is deemed to be 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).

[0074] This completes step S400 for determining whether or not the body is rotating (right), and the process returns to Fig. 12 to execute step S500 for determining whether or not 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 will not be described here.

[0075] After step S500, step S600 for determining whether the back is being stretched and the shoulder blades are being pressed is executed. 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 the pressure values ​​P1 and P2 is not greater than the threshold value P1th3 (S610, No), it is considered that neither the back straightening nor the shoulder blade pressing is being performed, and step S600 is terminated. In this case, the motion determination code MCJ and the magnitude data MS are both 0, and it is determined that no motion is being performed. R and pressure value P1 L If the sum of the pressure values ​​P6 of the right pressure sensor PS6 is greater than the threshold value P1th3 (S610, Yes), 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).

[0076] 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. Therefore, 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 his or her back. R ,P5 L and the pressure values ​​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 or not P56 is smaller than the threshold value P56th1 (S622). If P56 is not smaller than the threshold value P56th1 (S622, No), then the upper body has not been moved sufficiently away from the seat back S2 to be considered as being upright, and therefore the motion determination code MCJ and size data MS are both left at 0 and step S600 is terminated.

[0077] 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 as straight, so the movement determination code MCJ is set to 3 (S623). Then, the motion determination unit 122 determines whether P56 is smaller than the threshold value P56th2 (S625). Here, the threshold value P56th2 is a value smaller than P56th1. If P56 is not smaller than the threshold value P56th2 (S625, No), the back is slightly pushing the seat back S2, so the motion 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 away from the seat back S2 or is barely pushing it, so the motion is sufficient, and the magnitude data MS is set to 2 (S627). Then, after steps S626 and S627, step S600 ends.

[0078] 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 then determined whether the sum is smaller than a threshold value P4th3 (S630). Pressure value P4 R and pressure value P4 LIf the sum of these is not smaller than the threshold value P4th3 (S630, No), then the shoulder blades are not being pressed against the seat back S2, but rather the entire back is being pressed against it, so step S600 is terminated without changing either the motion determination code MCJ or the magnitude data MS, both of which remain at 0.

[0079] 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 for determining whether it can be said that the shoulder blades are being pressed sufficiently strongly against the seat back S2, and is a value greater than the threshold value P6th3. R and pressure value P6 L If the sum of these 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 the movement determination.

[0080] Returning to FIG. 11, after step S100 of motion determination, the motion instruction unit 121 determines whether the motion determination code MCJ is 0 or not, and if it is 0 (S30, Yes), outputs a message (S31). For example, as shown in FIG. 17, when 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 the 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.

[0081] In step S30, if it is determined that the action determination code MCJ is not 0 (S30, No), the action instruction unit 121 determines whether or not the action determination code MCJ matches the action code MC (S40). If the action determination code MCJ matches the action code MC (S40, Yes), the action determination unit 122 further determines whether or not the size data MS is 1 (S41). If the size data MS is not 1 (S41, No), that is, if the size data MS is 2, the seated person P has been able to move as instructed, so the process returns to step S21 to instruct the next action.

[0082] When it is determined in step S41 that the magnitude data MS is 1 (S41, Yes), the magnitude of the movement is insufficient, so the movement instruction unit 121 outputs a message to the smartphone SP to make the movement larger (S42). For example, when the magnitude of the movement is insufficient in the calf exercise, 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 is not enough. Raise your heel higher. Right, left, right, ..." is output from the speaker SPK of the smartphone SP. At this time, if an image of the heel lift higher than that in FIG. 17 is displayed on the screen DSP, it is easy to understand what the seated person P should do. After outputting the message, the process returns to step S21 to instruct the next movement.

[0083] In step S40, if it is determined that the action determination code MCJ does not match the action code MC (S40, No), the seated person P is performing an action different from the instruction, and a message on the correct action is output to the smartphone SP (S43). For example, when it is determined that the person is performing a heel-raising exercise during a leg-raising exercise, that is, when the action code MC is 2R and the action 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, as shown in FIG. 19, 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. After outputting the message, the process returns to step S21 to instruct the next action.

[0084] After reading out the operation code MC (S21), if the operation code MC is “EOL” (S22, Yes), the operation list is over, and the processing is terminated by displaying an end screen on the smartphone SP (S60, not shown).

[0085] As described above, according to the vehicle seat S of this embodiment, it is possible to identify the movement of the seated occupant P by a combination of pressure values ​​from at least two of at least four sensors, namely, the first cushion sensor SC1 and the second cushion sensor SC2 spaced apart in the front-to-back direction in the seat cushion S1, and the first back sensor SB1 and the second back sensor SB2 spaced apart in the top-to-bottom direction in the seat back S2.

[0086] Then, the vehicle seat S can determine whether the seated person P is performing the predetermined motion after the control unit 100 instructs the seated person P to perform the motion by the motion instruction unit 121 and the motion determination unit 122 instructs the seated person P to perform the predetermined motion by the motion instruction unit 121. Therefore, the seated person P can actively perform the motion and the vehicle seat S can respond regarding the goodness or badness of the motion, so that it is possible to provide a seat with an interactive relationship with the seated person P. If the active motion of the seated person P can be encouraged by providing an exercise game or the like as in the above embodiment, fatigue can be effectively eliminated and a more enjoyable trip can be realized. In particular, there is a problem of traveler's thrombosis occurring in vehicles that involve long-distance travels such as airplanes and long-distance buses, and there is a possibility that traveler's thrombosis can be suppressed by enjoying exercise in the vehicle.

[0087] 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.

[0088] If the movement determination unit 122 determines that the seated occupant P has not performed a predetermined movement, the movement instruction unit 121 again instructs the seated occupant P to perform the predetermined movement, thereby encouraging the seated occupant P to actively move.

[0089] When the movement determination unit 122 determines that the magnitude of the specified movement performed by the seated person P is insufficient, the movement instruction unit 121 instructs the seated person P to perform the specified movement to a greater extent, thereby enabling the seated person P to exercise to a greater extent, increasing the enjoyment of sitting and providing a healthy lifestyle.

[0090] Then, when 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 instructing unit 121, the action instructing unit 121 notifies the seated person P of the correct way to perform the action, 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 when the seated person P is to operate another device such as a smartphone SP or a navigation system in accordance with the action of the seated person P, accurate operation can be encouraged by notifying the seated person P of the correct way to perform the action.

[0091] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment. The specific configuration can be appropriately changed without departing from the spirit of the present invention.

[0092] 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 be given by vibration or hot / cold. Hot / cold refers to a 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.

[0093] In the above embodiment, each threshold value is 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 motion 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.

[0094] In the above embodiment, the exercise game has been described as an example, but other games can also be provided. For example, a training application (game-like) for achieving a beautiful posture can also be provided.

[0095] In the above embodiment, the control unit is a device separate from the smartphone, but the control unit may be configured by both the smartphone and a device provided in the seat or the vehicle. In other words, the smartphone may be part of or wholly part of the seat.

[0096] In the above embodiment, the control unit and the smartphone are connected via wireless communication, but they may be connected via wired communication.

[0097] 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 the average value of the left pressure value and the right pressure value may also be used, or it may be determined whether each of the right pressure value and the left pressure value satisfies a condition, and it may be determined that the action is being performed if at least one of them satisfies the condition, or if both of them satisfy the condition.

[0098] Measurements other than pressure values ​​can also be obtained to determine the motion of the seat occupant, for example measurements from a capacitance sensor or the like.

[0099] In the above embodiment, a seat installed in a vehicle was given as an example of a vehicle seat, but the vehicle seat may also be a vehicle seat other than a vehicle, or a seat installed in a home, facility, etc. other than a vehicle.

[0100] Furthermore, the elements described in the embodiments and modifications described in this specification can be implemented in appropriate combinations. [Explanation of symbols]

[0101] 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 for acquiring pressure values ​​from an occupant sitting on the seat body, the sensors including a first cushion sensor disposed at a position on the seat cushion corresponding to a buttocks of the occupant, and a second cushion sensor disposed in front of the first cushion sensor on the seat cushion; A seat including a control unit connected to the sensors so as to be able to acquire the pressure value from each of the plurality of sensors, The control unit, with respect to each of the pressure values ​​in a reference posture, The seat is characterized in that, when the pressure value of the first cushion sensor increases and the pressure value of the second cushion sensor decreases, it is determined that the foot has been moved.

2. A seat body having a seat cushion and a seat back; a plurality of sensors for acquiring pressure values ​​from an occupant sitting on the seat body, the sensors including a first cushion sensor disposed at a position on the seat cushion corresponding to a buttocks of the occupant, and a first back sensor disposed at a lower portion of the seat back; A seat including a control unit connected to the sensors so as to be able to acquire the pressure value from each of the plurality of sensors, The control unit, for each of the pressure values ​​in a reference posture, The seat is characterized in that, when the pressure value of the first cushion sensor increases and the pressure value of the first back sensor decreases, it is determined that the occupant has performed a back straightening action.

3. A seat body having a seat cushion and a seat back; a plurality of sensors for acquiring pressure values ​​from an occupant sitting on the seat body, the sensors including a first cushion sensor disposed at a position on the seat cushion corresponding to the buttocks of the occupant, a first back sensor disposed at a lower portion of the seat back, and a second back sensor disposed at a position on the seat back above the first back sensor; A seat including a control unit connected to the sensors so as to be able to acquire the pressure value from each of the plurality of sensors, The control unit, for each of the pressure values ​​in a reference posture, This seat is characterized in that, when the pressure values ​​of the first cushion sensor and the second back sensor increase and the pressure value of the first back sensor decreases, it is determined that an action of pressing the shoulder blades against the seat back has been performed.

4. A seat body having a seat cushion and a seat back; a plurality of sensors for acquiring pressure values ​​from an occupant sitting on the seat body, the sensors including a first cushion sensor disposed at a position on the seat cushion corresponding to the buttocks of the occupant, a first back sensor disposed at a lower portion of the seat back, and a second back sensor disposed at a position on the seat back above the first back sensor; A seat including a control unit connected to the sensors so as to be able to acquire the pressure value from each of the plurality of sensors, The first back sensor includes at least one right first back sensor and at least one left first back sensor; the first cushion sensors include at least one right first cushion sensor and at least one left first cushion sensor; The second back sensor includes at least one right second back sensor and at least one left second back sensor; The control unit, for each of the pressure values ​​in a reference posture, When the pressure values ​​of the right first cushion sensor and the right first back sensor become large and the pressure values ​​of the left first back sensor and the left second back sensor become small, it is determined that a motion of turning the upper body to the right has been performed, This seat is characterized in that, when the pressure values ​​of the left first cushion sensor and the left first back sensor increase and the pressure values ​​of the right first back sensor and the right second back sensor decrease, it is determined that an action of turning the upper body to the left has been performed.

5. A seat described in any one of claims 3 to 4, characterized in that the second back sensor is located above a position 300 mm above the seat surface of the seat cushion along the seat surface of the seat back.

6. A seat as described in claim 1, characterized in that the second cushion sensor is located forward of a position 280 mm forward along the seat surface of the seat cushion from the seat surface of the seat back.

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