JP7174284B2 - Motion identification device, vehicle, seat cushion and seat - Google Patents

Description

TECHNICAL FIELD The present invention relates to a motion specifying device, a vehicle, a seat cushion, and a seat that can specify the motion of a seated person.

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

JP 2017-065504 A

By the way, a conventional seat tries to recover from fatigue by moving the seat, but such passive exercise cannot sufficiently recover from fatigue. Rather, the inventors of the present application thought that by encouraging the seated person to exercise actively, not only could fatigue be effectively eliminated, but also a more enjoyable trip could be realized. Travelers' thrombosis may occur on long trips such as airplanes and long-distance buses. be.

Furthermore, even in seats other than vehicles, exercising while sitting may provide a healthier lifestyle.

However, in the conventional seat, it was not possible to specify the movement of the seated person, and it was not possible to realize such an enjoyable seat.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a motion specifying device, a vehicle, a seat cushion, and a seat that can specify the motion of a seated person.

The present invention for solving the above-described problems is a seat body having a seat cushion and a seat back, and a plurality of sensors for acquiring pressure values from a seated person sitting on the seat body. a first cushion sensor arranged at a position corresponding to a seat cushion; a second cushion sensor located in front of the first cushion sensor in the seat cushion; a first back sensor arranged in a lower portion of the seat back; The seat includes sensors including a second back sensor arranged above the first back sensor, and a controller 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 motion of the seated person based on the outputs of at least two of the first cushion sensor, the second cushion sensor, the first back sensor and the second back sensor.

According to such a configuration, of the at least four sensors of the first cushion sensor and the second cushion sensor separated in the front-rear direction on the seat cushion and the first back sensor and the second back sensor separated vertically on the seat back, A combination of pressure values from at least two sensors can identify the motion of the seat occupant.
Further, the motion determination device that determines the motion of the legs of the seated person includes a seat cushion and a plurality of sensors that acquire pressure values from the seated person sitting on the seat cushion. A sensor including a first cushion sensor arranged at a corresponding position and a second cushion sensor located in front of the first cushion sensor on the seat cushion, and a sensor capable of acquiring a pressure value from each of the plurality of sensors. and a controller connected to the Then, the control unit determines that the seated person has moved their legs based on the change in the pressure value of the first cushion sensor and the pressure value of the second cushion sensor with respect to the pressure value in the standard posture. do.

In the above-described seat, the controller performs a heel-raising operation when the pressure value of the first cushion sensor increases and the pressure value of the second cushion sensor decreases with respect to each pressure value in the standard posture. can be determined to have been made.

In the seat described above, the control unit controls the pressure values of the first cushion sensor and the first back sensor when the pressure values of the first cushion sensor and the first back sensor increase, and the pressure values of the second cushion sensor when the pressure value of the second cushion sensor decreases. , it can be determined that the leg-up motion has been performed.

In the seat described above, the control unit performs an operation of stretching the back when the pressure value of the first cushion sensor increases and the pressure value of the first back sensor decreases with respect to each pressure value in the standard posture. can be determined to have been made.

In the seat described above, the control unit controls the pressure values of the first cushion sensor and the second back sensor to increase and the pressure values of the first back sensor to decrease relative to the respective pressure values in the standard posture. , it can be determined that an action of pressing the scapula against the seat back has been performed.

In the above seat, the first back sensor includes at least one right first back sensor and at least one left first back sensor, and 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 may include at least one right second back sensor and at least one left second back sensor. In this case, the control unit increases the pressure values of the right first cushion sensor and the right first back sensor and increases the pressure values of the right first cushion sensor and the left first back sensor with respect to each pressure value in the reference posture. 2 When the pressure value of the back sensor decreases, it is determined that the upper body has been turned to the right, and the pressure values of the left first cushion sensor and the left first back sensor increase, and the right first cushion sensor increases. When the pressure values of the back sensor and the right second back sensor become smaller, it can be determined that the upper body has been turned to the left.

The second back sensor is desirably located above the seat surface of the seat cushion and above a position of 300 mm along the seat surface of the seat back.

According to such a configuration, the pressure from the shoulders of the seated person can be detected by the second back sensor.

The second cushion sensor is desirably positioned ahead of a position 280 mm forward along the seat surface of the seat cushion from the seat surface of the seat back.

According to such a configuration, the vertical movement of the thigh can be detected satisfactorily by the second cushion sensor.

According to the present invention, it is possible to identify the motion of the seated person by combining pressure values from at least two sensors.

It is a figure explaining the whole system composition using the vehicle seat concerning one embodiment. It is a figure explaining the structure of each vehicle seat. It is a figure explaining arrangement|positioning of a sensor, (a) is the figure which looked at the seat back from the front, (b) is the figure which looked at the seat cushion from the top. It is a sectional view of a seat explaining arrangement of a sensor. 1 is a block diagram illustrating the configuration of a vehicle seat and system; FIG. 4 is a table for explaining criteria for determining motion; It is an example of an action list of a whole-body course. It is a message table when it is determined that it is not operating. It is a message table when it is determined that the operation is insufficient. It is a message table when it is determined that the action is different from the instruction. 6 is a flowchart showing an example of processing of a control unit; 4 is a flowchart of motion determination processing; 10 is a flowchart of processing for heel-up/foot-up determination (right). 10 is a flow chart of processing for body rotation determination (right). It is a flow chart of the processing of straightening the back and pressing the scapula. It is an example of a menu screen. It is an example of a calf exercise screen. It is an example of a presentation screen when the movement is small. It is an example of the presentation screen when it is determined that the motion is different from the instruction.

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

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

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

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

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

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

The pressure sensor PS3 is located 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 called the second cushion sensor SC2.

The pressure sensor PS3 is positioned under the thighs of the seated person P and can measure the pressure value from the thighs of the seated person P. The pressure sensor PS3 is arranged 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. can be done.

As shown in FIG. 4, the second cushion sensor SC2 is desirably located in front of a position E1 that is 280 mm ahead of the seat surface S21 of the seat back S2 along the seat surface S11 of the seat cushion S1. Note that the first cushion sensor SC1 is located behind the position E1. The position E1 here corresponds to the position where one ruler M11 of the L-shaped curved measure M1 is aligned with the seat surface S11 of the seat cushion S1, and the other ruler M12 is brought into contact with the seat surface S21 of the seat back S2. Suppose that it measures with the dimension of the ruler M11. If the shape of the seat back S2 (for example, the lumbar support) can be adjusted, any shape may satisfy this requirement. By arranging the second cushion sensor SC2 at such a position, the vertical movement of the thigh of the seated person P can be detected satisfactorily by the second cushion sensor SC2.

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

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

Both the pressure sensor PS4 and the pressure sensor PS5 are for measuring the pressure from the waist 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.

The pressure sensor PS6 is arranged at a large distance above the pressure sensors PS4 and PS5. The pressure sensor PS6 is an example of a second back sensor arranged above the first back sensor SB1 in the seat back S2. In the following description, the pressure sensor PS6 is also called the second back sensor SB2.

The pressure sensor PS6 is positioned corresponding to the upper part of the back of the seated person P, and can measure the pressure value from the shoulder blades of the seated person P. For example, the pressure sensor PS6 is placed 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 to the left and right of the center C. can be done.

As shown in FIG. 4, the second back sensor SB2 is desirably located above a position E2 300 mm above the seat surface S11 of the seat cushion S1 along the seat surface S21 of the seat back S2. Note that the first back sensor SB1 is located below the position E2. The position E2 here corresponds to the position of one ruler M21 of the L-shaped curved measure M2 along the seat surface S21 of the seat back S2, and the other ruler M22 of the seat cushion S1. Suppose that it measures with the dimension of the ruler M21. If the shape of the seat back S2 (for example, the lumbar support) can be adjusted, any shape may satisfy this requirement. By disposing the second back sensor SB2 at such a position, the pressure from the shoulder of the seated person P can be detected by the second back sensor SB2.

In the following description, the pressure values obtained by the pressure sensors PS1 to PS6 are denoted by P1 to P6, respectively, and the right and left pressure values are denoted by R and L, respectively, such as P1 _R and P1 _L. letter. Note that the pressure sensors PS1 to PS6 are, for example, elements whose electrical resistance changes according to external pressure, and the higher the pressure value, the higher (or lower) the voltage of the detection signal. Therefore, the magnitude of the pressure value is actually compared according to the magnitude of the voltage value, but in this specification, for ease of understanding, the magnitude of the pressure value will be used for the determination.

As shown in FIG. 5 , the control unit 100 has a measured 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 pre-stored program.

The controller 100 is connected to a short-range communication device 3A that enables short-range wireless communication such as Bluetooth (registered trademark) or Wi-Fi (registered trademark). The control unit 100 can communicate with the smartphone SP via the communication unit 130 and the short-range communication device 3A, and cooperates with an application installed in the smartphone SP to provide the smartphone SP with predetermined screens and sounds. The data input by SP can be obtained.

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

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

The action instructing part 121 is a part that instructs the seated person P to perform a predetermined action. In this embodiment, the motion to be instructed is a motion pre-stored for each gymnastics game menu. For example, a gymnastics game menu includes a full-body course and a lower-body course, and the full-body course is stored as an action list as shown in FIG. In the action list, the action code MC and the time [ms] for performing the action are associated with the order of action "No." and stored. For example, the first operation "No. 1" has an operation code MC of "1R" and continues for 1000 ms, and the next operation "No. 2" has an operation code of "1L" and continues for 1000 ms. Memorized to continue. As shown in FIG. 6, the respective action codes are "1R" and "1L" for raising the heel, "2R" and "2L" for raising the leg, "3" for stretching the back, "4" for pressing the scapula, and " 5R” and “5L” mean upper body rotation. R and L in each code mean right and left actions, respectively. For example, "1R" means raising the heel of the right leg, and "5L" means turning (twisting) the upper body to the left. .
In addition, in the operation list of FIG. The action code "0" in 301 means do nothing. Also, "EOL" means the end of the operation list.

When instructing an action according to the action list, the action instructing unit 121 selects No. of the action list. The operation code MC and the time are sequentially read in ascending order of , and output to the application of the smartphone SP. The smartphone SP application stores image data and audio data corresponding to this operation code MC, and outputs an image including characters (including a changing image, that is, a moving image) on the screen of the smartphone SP. , outputs an operation instruction by music and voice (that is, sound, light, image, moving image, and text) from the speaker of the smartphone SP.

Here, each operation will be described.
A heel raise is an exercise that raises the heel off the floor. In the present invention, heel raising includes calf exercise to raise the heel while keeping the toe on the floor using the calf and foot raising exercise to raise the toe from the floor mainly using the thigh muscle and the iliopsoas muscle. This is because all of these exercises raise the heel.
In the present embodiment, as an example, the action instructing unit 121 distinguishes and instructs both the calf exercise and the leg raise exercise, so the heel raise exercise means only the calf exercise (heel raise exercise in a narrow sense). It is assumed that For example, in an application, a calf exercise is expressed as "Please raise your heel". However, when both the calf exercise and the leg raise exercise are performed in a form that does not instruct (do not distinguish), the heel raise exercise can also be called as including both the calf exercise and the leg raise exercise. heel raise exercise). In the following, the heel-raising movement will be explained in a narrow sense or in a broad sense, supplemented as appropriate.

The leg raise exercise is an exercise that raises the foot off the floor, as described above.

Stretching the back is an exercise in which the back is stretched vertically and the back is separated from the seat back S2.

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

Upper body rotation is an exercise of turning (twisting) the upper body to the right or left while sitting on the seat cushion S1, and is performed by turning the face sideways or backward. The twisted upper body is performed with the seat back S2 attached. For example, in the case of clockwise rotation, the right shoulder is attached to the seat back S2 and the left shoulder is lifted from the seat back S2.

When the motion determination unit 122 determines that the seated person P is not performing the predetermined motion instructed by the motion instruction unit 121, the motion instruction unit 121 instructs the seated person P to perform the predetermined motion again.
As will be described later, in the present embodiment, the motion determination unit 122 sets the motion determination code MCJ indicating the motion determination result to 0 when the motion cannot be specified. In this case, it is instructed again via the smartphone SP to perform a predetermined action (an action corresponding to the data read from the action list).

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

Further, when the motion determination unit 122 determines that the magnitude of the predetermined motion performed by the seated person P is insufficient, the motion instruction unit 121 instructs the seated person P to perform the predetermined motion large. do.
As will be described later, in this embodiment, the motion determination unit 122 assigns magnitude data MS indicating the magnitude of the motion to 2 if the motion is sufficient, 1 if the motion is insufficient, and 1 if the motion is not performed. is 0, the motion instructing unit 121 instructs the seated person P to perform a predetermined motion larger when the size data MS is 1 via the smart phone SP.
The storage unit 190 stores a message that the operation instruction unit 121 outputs to the smartphone SP when the size of the predetermined operation performed by the seated person P is insufficient. This message is stored in association with each operation code MC, as shown in FIG. 9, for example.

Further, when the motion determination unit 122 determines that the motion performed by the seated person is different from the motion instructed by the motion instruction unit, the motion instruction unit 121 notifies the seated person P of the correct motion method. do.
In this embodiment, when the instructed action code MC and the action determination code MCJ do not match, the action determination unit 122 notifies the seated person P of the correct action method via the smartphone SP.

The storage unit 190 stores a message output by the action instructing unit 121 to the smartphone SP when the action performed by the seated person P is different from the action instructed by the action instructing unit 121 . For example, as shown in FIG. 10, this message is stored in association with the combination of each action code MC and each action determination data.

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

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

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

Further, in FIG. 6, SC1 (PS2) indicates the value of the pressure sensor PS2 out of the two pressure sensors PS1 and PS2 (four sensors in total) of the first cushion sensor SC1. means to judge. In this embodiment, the measured value of the pressure sensor PS2 is used as the first cushion sensor SC1 when raising the heel, for example, but the measured value of the pressure sensor PS1 may be used. Similarly, in the other motions, when the motion is determined based on the measured value of the first cushion sensor SC1, the measured value of either of the two pressure sensors PS1 and PS2 may be used. When the operation is determined based on the measurement value of the first back sensor SB1, either measurement value of the two pressure sensors PS4 and PS5 may be used.

The motion determination unit 122 determines the pressure value P2 of the pressure sensor PS2 of the first cushion sensor SC1 on the raised foot side and the pressure value of the pressure sensor PS4 of the first back sensor SB1 for each pressure value in the reference posture. When the pressure value P4 increases and the pressure value P3 of the second cushion sensor SC2 on the same side on the left and right decreases, it is determined that the leg is raised. In the present embodiment, in order to further ensure accuracy, it is determined whether the foot is raised under the condition that the pressure value P6 of the second back sensor SB2 on the left-right opposite side becomes smaller.

The motion determination unit 122 determines that 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 with respect to each pressure value in the reference posture. When it becomes so, it is determined that the motion of stretching the back muscle has been performed. In the present embodiment, in order to ensure accuracy, the action of stretching the spine is determined on the condition that the pressure value P6 of the second back sensor SB2 has decreased.
In addition, since there is no distinction between the right and left muscles for stretching the spine, the pressure value obtained by adding the left pressure value and the right pressure value is used.

The motion determination unit 122 determines that the pressure value P1 of the pressure sensor PS1 of the first cushion sensor SC1 and the pressure value P6 of the second back sensor SB2 increase with respect to each pressure value in the reference posture, and the first back sensor SB1 When the pressure value P4 of the pressure sensor PS4 becomes smaller, it is determined that the scapula has been pressed against the seat back S2.
Since there is no distinction between left and right scapula pressing, a pressure value obtained by adding the left pressure value and the right pressure value is used.

The motion determination unit 122 determines the pressure values P1 to _R of the pressure sensor PS1 of the right first cushion sensor SC1 and the pressure value P4 of the pressure sensor PS4 of the right first back sensor SB1 for each pressure value in the reference posture. When _R increases and the pressure value P4 _L of the pressure sensor PS4 of the left first back sensor SB1 and the pressure value P6 _L of the left second back sensor SB2 decrease, the upper body is turned to the right. The pressure value P1 _L of the pressure sensor PS1 of the left first cushion sensor SC1 and the pressure value P4 _L of the pressure sensor PS4 of the left first back sensor SB1 increase, and the pressure of the right first back sensor SB1 increases. When the pressure value P4 _R of the sensor PS4 and the pressure value P6 _R of the right second back sensor SB2 become smaller, it is determined that the upper body has been turned to the left.

In the above determination, whether or not the pressure value has increased or decreased with respect to the reference posture can be determined by comparing with thresholds stored in advance in the storage unit 190. .

In each motion, the magnitude of the motion can be determined by comparing the pressure value with a predetermined threshold value. Set MS to 2, set MS to 1 if insufficient, set MS to 0 if not working.

Next, an example of processing for providing a gymnastics game by the control unit 100 will be described with reference to FIGS. 11 to 15. FIG.
As shown in FIG. 11, the processing unit 120 presents the menu screen of the gymnastics game to the smartphone SP (S11). On the menu screen, for example, as shown in FIG. 16, a "whole body course" button B01 and a "lower body course" button B02 are presented as menus for in-vehicle exercise, prompting the seated person P to select. The processing unit 120 determines whether or not the menu has been selected (whether or not a signal indicating that the button has been pressed has been received), and waits until the menu is selected (S12, No).

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

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

Then, heel-up/foot-up determination (right) (step S200) is processed.
In this determination, as shown in FIG. 13, first, it is determined whether the pressure value P2R of the right pressure sensor PS2 is greater than the threshold value _P2th1 (S201). If the pressure value P2R is larger than the threshold value _P2th1 (S201, Yes), then it is determined whether the pressure value _P3R of the right pressure sensor PS3 is smaller than the threshold value P3th (S202). When the pressure value _P3R 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. (heels up whether feet are on the floor or not). If the determination in step S201 or step S202 is No, step S200 is terminated because heel-raising or foot-raising (in a narrow sense) is not performed. At this time, both the action determination code MCJ and the magnitude data MS remain zero.

After the determination in step S202 is Yes, the motion determination unit 122 determines whether the pressure value _P4R of the right pressure sensor PS4 is greater than the threshold value P4th. ( _S204 ).
When the pressure value _P6L is smaller than the threshold value P6th (S204, Yes), the right waist is pressed against the seat back S2 by removing the feet from the floor, and the left shoulder is about to leave the seat back S2. It can be determined that it is a leg-up exercise. Therefore, the action determination code MCJ is set to 2R (right leg up exercise) (S212). On the other hand, if the determination in step S203 or step S204 is No, it is considered that the foot is not off the floor, so the motion determination code MCJ is set to 1R (right heel-up motion) (S211).

After step S211 or step S212, operation determination unit 122 determines whether pressure value P2R of right pressure sensor PS2 is greater than threshold value _P2th2 (S220). Here, the threshold value P2th1 is a value for determining whether or not the user is exercising to the extent that the heel is at least raised, and the threshold value P2th2 is a value for determining whether or not the heel is sufficiently raised. is a value for determining That is, P2th2 is greater than P2th1.

If the pressure value P2R is greater than the threshold value _P2th2 (S220, Yes), it is considered that the motion is of sufficient magnitude, so the magnitude data MS is set to 2 (S222). On the other hand, if the pressure value P2R is not greater than the threshold value _P2th2 (S220, No), the magnitude of the motion is considered insufficient, so the magnitude data MS is set to 1 (S221).

Step S200 for heel-up/foot-up determination (right) ends here, returning to FIG. 12, step S300 for heel-up/foot-up determination (left) is executed. In step S300, since the right and left of the pressure value to be determined are reversed from step S200, description thereof is omitted.

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

After setting the motion determination code MCJ to 5R, the motion determination unit 122 determines whether the pressure value _P1R is greater than the threshold value P1th2 (S430). Here, the threshold value P1th1 is a value for determining whether or not the person is exercising to the extent that it can be said that the upper body is being rotated at the minimum, and the threshold value 1th2 is a value for determining whether the upper body is being rotated sufficiently. It is a value for determining whether or not That is, P1th2 is greater than P1th1.

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

This is the end of step S400 for body rotation determination (right), and returning to FIG. 12, step S500 for body rotation determination (left) is executed. In step S500, since the right and left of the pressure value to be determined are reversed from step S400, description thereof is omitted.

After step S500, step S600 for determining whether to stretch the back or press the scapula is executed.
As shown in FIG. 15, first, it is determined whether or not the operation determination code MCJ is 0 (S601). If MCJ is not 0 (S601, No), the operation has already been determined, so step S600 ends.
If MCJ is 0 (S601, Yes), it is determined whether the sum of the pressure value P1- _R of the right pressure sensor PS1 and the pressure value P1- _L of the left pressure sensor PS1 is greater than the threshold value P1th3 (S610). If the sum of the pressure value _P1R and the pressure value _P1L is not greater than the threshold value P1th3 (S610, No), it is considered that neither the stretching of the back nor the pressing of the scapula is performed, so step S600 ends. In this case, both the motion determination code MCJ and the magnitude data MS are 0, and it is determined that the robot is not moving. If the sum of the pressure value _P1R and the pressure value _P1L is greater than the threshold value _P1th3 (S610, Yes), the sum of the pressure value P6R of the right pressure sensor PS6 and the pressure value _P6L of the left pressure sensor PS6 is greater than the threshold value P6th3 (S611).

If the sum of the pressure value P6R of the right pressure sensor PS6 and the pressure value _P6L of the left pressure sensor PS6 is not greater than the threshold value _P6th3 (S611, No), it means that the shoulder blade is pressed against the seatback S2. Since it cannot be said, the motion determination unit 122 determines whether or not the back is straightened by determining the pressure values P5 _R and P5 _L of the left and right pressure sensors PS5 and the pressure values P6 _R and P6 _L of the left and right pressure sensors PS6. is added to calculate P56 (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), the upper body is not sufficiently separated from the seat back S2 to the extent that it can be said that the back is straight. are both left at 0, and step S600 is terminated.

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

If it is determined in step S611 that the sum of the pressure value P6 _R and the pressure value P6 _L is greater than the threshold value P6th3 (S611, Yes), it can be said that the shoulder blade is pressed against the seat back S2, so the operation is performed. Determination unit 122 further determines whether the sum of pressure value P4 _R of right pressure sensor PS4 and pressure value P4 _L of left pressure sensor PS4 is smaller than threshold value P4th3 (S630).
If the sum of the pressure value _P4R and the pressure value _P4L is not smaller than the threshold value P4th3 (S630, No), the entire back is pressed rather than the shoulder blades pressed against the seat back S2, so the motion determination code MCJ is set. and the size data MS remain at 0, and step S600 ends.

If the sum of the pressure value _P4R and the pressure value _P4L is smaller than the threshold value P4th3 (S630, Yes), it can be said that the scapula is well pressed against the seat back S2 rather than the entire back, so the motion determination code MCJ. is set to 4 (S631).
Then, it is determined whether or not the sum of the pressure value P6R and the pressure value _P6L is greater than the threshold value _P6th4 (S632). The threshold value P6th4 is a value for determining whether or not it can be said that the shoulder blades are sufficiently pressed against the seat back S2, and is a value larger than the threshold value P6th3. If the sum of the pressure value P6R and the pressure value _P6L is not greater than the threshold value _P6th4 (S632, No), the force for pressing the scapula against the seat back S2 is insufficient, so the size data MS is set to 1 (S633). , the sum of the pressure value P6R and the pressure value _P6L is greater than the threshold value _P6th4 (S632, Yes), the force for pressing the scapula against the seat back S2 is sufficient, so the size data MS is set to 2 (S634), Each ends step S600. This completes step S100 for motion determination.

Returning to FIG. 11, after the action determination step S100, the action instruction unit 121 determines whether or not the action determination code MCJ is 0, and if it is 0 (S30, Yes), outputs a message (S31). For example, as shown in FIG. 17, when the action determination code MCJ is 0 while exercising the calves, the action instructing unit 121 refers to the message table of FIG. The corresponding message is read and output to the smart phone SP. As a result, the speaker SPK of the smartphone SP outputs a message such as "Your leg is not moving. Use your calf to raise your heel." (See FIG. 17).
After outputting the message, the action instructing unit 121 returns to step S23 and instructs to perform the predetermined action again.

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

If it is determined in step S41 that the size data MS is 1 (S41, Yes), the size of the motion is insufficient, so the motion instruction unit 121 outputs a message to the smartphone SP to the effect that the motion will be made larger. (S42). For example, if the calf movement is insufficient in size, the message table of FIG. 9 is referred to, the message corresponding to the action code 1L is read, and output to the smart phone SP. As a result, as shown in FIG. 18, the speaker SPK of the smartphone SP outputs a message such as "It seems that you are raising your heels too little. Let's raise your heels higher. Right, left, right..." do. At this time, if an image in which the heel is raised higher than 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 operation.

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

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

As described above, according to the vehicle seat S of the present embodiment, the first cushion sensor SC1 and the second cushion sensor SC2 separated in the front-rear direction on the seat cushion S1, and the first cushion sensor SC1 and the second cushion sensor SC2 separated in the vertical direction on the seat back S2. The motion of the seated person P can be identified by a combination of pressure values from at least two of the at least four sensors, ie, the back sensor SB1 and the second back sensor SB2.

In the vehicle seat S, the control unit 100 instructs the seated person to perform a motion using the motion instruction unit 121, and the motion determination unit 122 instructs the seated person to perform a predetermined motion using the motion instruction unit 121. It can be determined whether P is performing a predetermined action. For this reason, the seated person P can actively move, and the vehicle seat S can respond as to whether the motion is good or bad. becomes possible. As in the above-described embodiment, providing a gymnastics game or the like can encourage the active movement of the seated person P, so that fatigue can be effectively eliminated, and a more enjoyable journey can be realized. . Traveler thrombosis is a problem especially in vehicles that require long trips such as airplanes and long-distance buses. be.

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

When the motion determining unit 122 determines that the seated person P is not performing the predetermined motion, the motion instructing unit 121 instructs the seated person P to perform the predetermined motion again, thereby prompting the seated person P to perform a positive motion. can be done.

Then, when the motion determination unit 122 determines that the magnitude of the predetermined motion performed by the seated person P is insufficient, the motion instruction unit 121 instructs the seated person P to perform the predetermined motion large. Therefore, the seated person P can be exercised greatly, the enjoyment of sitting can be increased, and a healthy life can be provided.

When the motion determining unit 122 determines that the motion performed by the seated person P is different from the motion instructed by the motion instructing unit 121, the motion instructing unit 121 instructs the seated person P to perform the correct motion. Since the notification is given, the seated person P can be encouraged to exercise in a healthy manner. Further, in the above-described embodiment, a gymnastics game has been described as an example. Accurate operation can be urged by notifying how to operate.

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

For example, in the above-described embodiment, the action instructing section instructs the seated person to perform a predetermined action by means of sound, light, image, moving image, and text, but it may be instructed by vibration or heat/cool. The term “warm/cold” refers to stimulation of warmth or coolness to the seated person P. For example, stimulation can be given by heating the seat surface with a heater or blowing air to the seated person P with a blower. In this specification, characters include braille.

In the above embodiment, each threshold is assumed to be constant, but the threshold may not be constant. For example, if the seated person can be identified by the id of the smartphone, etc., the threshold value can be stored for each seated person, and the motion proficiency and habits are estimated and stored for each seated person, The threshold may be changed according to proficiency and habit.

In the above embodiment, the gymnastics game was described as an example, but other games can also be provided. For example, it is possible to provide a training app (like a game) to achieve a beautiful posture.

In the above-described embodiment, the case where the control unit is a device separate from the smartphone was exemplified, but both the device provided in the seat or the vehicle and the smartphone may constitute the control unit. That is, part or all of the smartphone can be configured as a sheet.

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

In the above embodiment, the pressure value obtained by adding the left pressure value and the right pressure value is used for straightening the back without distinguishing between left and right, but the average value of the left pressure value and the right pressure value is Alternatively, it is determined whether each of the right pressure value and the left pressure value satisfies the condition, and if at least one satisfies the condition or if both satisfy the condition, the operation is performed. It may be determined that there is

Measurements other than pressure values can also be obtained to identify the motion of the occupant. For example, it is also possible to use measurements such as capacitance sensors.

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

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

100 control unit 110 measured value acquisition unit 120 processing unit 121 motion instruction unit 122 motion determination unit P seated person PS1 to PS6 pressure sensor S vehicle seat S1 seat cushion S2 seat back SB1 first back sensor SB2 second back sensor SC1 first Cushion sensor SC2 Second cushion sensor SP Smartphone SYS system

Claims (8)

seat cushion and
A plurality of sensors for obtaining pressure values from a seated person sitting on the seat cushion, the first cushion sensor being arranged at a position corresponding to the buttocks of the seated person on the seat cushion; a second cushion sensor positioned before the first cushion sensor;
A motion determination device comprising a control unit connected to the sensors so that the pressure values can be obtained from each of the plurality of sensors,
The control unit has a motion instruction unit and a motion determination unit,
The action instructing unit instructs the seated person to move the legs,
The motion determination unit determines whether the seated person follows the instruction based on the change in the pressure value of the first cushion sensor and the pressure value of the second cushion sensor with respect to the pressure value in the reference posture. A motion determination device characterized by determining that a leg has been moved. When the pressure value of the first cushion sensor becomes larger and the pressure value of the second cushion sensor becomes smaller than the pressure value in the reference posture, the control unit causes the seated person to raise the heel. 2. The motion determination device according to claim 1, wherein it is determined that a motion or a leg raising motion has been performed. 3. The motion determination device according to claim 2, wherein the control unit changes a threshold value for determining whether the heel-raising motion or the leg-raising motion has been performed for each seated person. A vehicle equipped with the motion determination device according to any one of claims 1 to 3. A plurality of sensors for acquiring pressure values from a seated person, including a first cushion sensor arranged at a position corresponding to the buttocks of the seated person, and a second cushion sensor located in front of the first cushion sensor. a sensor comprising
A seat cushion comprising a control unit connected to the sensors so that the pressure values can be obtained from each of the plurality of sensors,
The control unit has a motion instruction unit and a motion determination unit,
The action instructing unit instructs the seated person to move the legs,
The motion determination unit determines whether the seated person follows the instruction based on the change in the pressure value of the first cushion sensor and the pressure value of the second cushion sensor with respect to the pressure value in the reference posture. A seat cushion characterized by determining that a leg has been moved. When the pressure value of the first cushion sensor becomes larger and the pressure value of the second cushion sensor becomes smaller than the pressure value in the reference posture, the control unit causes the seated person to raise the heel. 6. The seat cushion according to claim 5, wherein it is determined that a motion or a leg raising motion has been performed. 7. The seat cushion according to claim 6, wherein the control unit changes a threshold value for determining that the heel-raising motion or the leg-raising motion has been performed for each seated person. A seat comprising the seat cushion according to any one of claims 5 to 7 and a seat back.

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