KR20170132022A - Posture Control System using Smart Fabric - Google Patents

Abstract

The present invention relates to a posture control system using smart fiber. According to the present invention, the posture control system using smart fiber comprises: a posture detection unit which includes a first spine detection unit, a second spine detection unit, a buttocks detection unit, and a thigh detection unit, which are respectively composed of two or more piezoelectric sensors, wherein the first spine detection unit and the second spine detection unit are placed on a back unit of a chair to correspond to a position of the upper spine near the head side and a position of the lower spine near the ground surface and the buttocks detection unit and the thigh detection unit are placed on a seat unit of the chair respectively near the back or in the opposite direction; a control unit which compares the posture of a user in accordance with the pressure signal measured by the posture detection unit and a preset reference posture to determine whether the posture of the user is normal or not; and a posture feedback unit which notifies the user of information on the posture as determined by the control unit. The present invention is to provide a posture control system which is able to be applied to a variety of structures of chairs, to have high flexibility, and to precisely measure a posture.

Description

{Posture Control System using Smart Fabric}

The present invention relates to an attitude control system using smart fibers, and more specifically, to an attitude control system using smart fibers capable of precisely determining and feedbacking a user's attitude.

In spinal-related diseases, unstable sitting postures are often the cause. Until vertebral disease is severe, correct posture and correct postural habits may be enough to alleviate symptoms and to have a therapeutic effect.

Patent Document 1 discloses arranging an air cell at a portion of the user's back, estimating the posture of the user based on the change of the air cell, and adjusting the air amount of the air cell to correct the posture. In the case of Patent Document 1, the air cell is frequently adjusted to cause discomfort to the user, and the air cell must be attached and held on the entire seat back, thus complicating the structure of the device.

 In the case of Patent Document 2, the first device is disposed on the left and right symmetry axes of the wearer's lumbar vertebrae which surrounds the upper body of the user to obtain the three-dimensional spatial information, and the two second devices are disposed symmetrically to the left and right. In the case of Patent Document 1, since measurement can be performed only when a user wears the wearer's mouth all the time, there is a problem that it is inconvenient to use and there are many restrictions.

KR 10-0992102 B1 KR 10-1553585 B1

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a backrest and a seat portion of a chair utilizing a fiber on which a piezoelectric sensor is mounted, And to provide an attitude control system capable of measuring the force.

Another object of the present invention is to provide an attitude control system excellent in user accessibility and convenience that allows the attitude measurement to be performed even if the user is not always wearing it.

The posture control system according to an embodiment of the present invention includes a first vertebra sensing unit, a second vertebra sensing unit, a hip portion sensing unit, and a thigh sensing unit, each of which is composed of two or more piezoelectric sensors, 2 the spine sensing part is disposed in the backrest part of the chair in correspondence with the position of the upper spine in the head direction of the user and the lower spine in the direction of the ground, and the buttock sensing part and the thigh sensing part are arranged in the seat part of the chair, Respectively, in the opposite direction; A controller for comparing the user's attitude according to the measured pressure signal from the attitude sensing unit and a preset reference attitude to determine whether the user's attitude is normal; And an attitude feedback unit for informing a user of information on the attitude of the user determined by the control unit.

In the control unit, the intensity of the pressure sensed by the piezoelectric sensors is determined based on the pressure when the user sits in the predetermined reference posture, and the intensity of the measured pressure is larger than a predetermined value A weak pressure when the pressure is lower than a preset value and an intermediate pressure when the pressure is between the strong pressure and the weak pressure; and the first spine sensing part, the second vertebra sensing part, The attitude pattern of the user measured according to the attitude pattern represented by the strong pressure, the weak pressure or the intermediate pressure with respect to the part and the thigh sensing part can be determined as the normal attitude, the attitude attitude and the attitude attitude.

Wherein the reference posture is a posture in which a user's upper vertebra and lower vertebrae portion are attached to a backrest portion of a chair and the two legs of the user are seated on the seat portion in a flat state, If all the pressures are intermediate pressure, it can be judged as a normal posture.

Wherein the pressure measured by the first vertebra sensing unit is a weak pressure, the pressure measured by the second vertebra sensing unit is a weak pressure, the pressure measured by the buttock sensing unit is an intermediate pressure, If the pressure is a strong pressure, the control unit can judge it as a state of caution.

Wherein at least two piezoelectric sensors in each of the first vertebra sensing part, the second vertebra sensing part, the hip part sensing part and the thigh sensing part are divided into left and right sides of the user's spine, The piezoelectric sensor in either the left or right direction of the vertebrae sensing unit is measured at a weak pressure and the piezoelectric sensor in the other direction is measured at an intermediate pressure and the piezoelectric sensor in the one direction of the hip sensing unit measures Wherein the piezoelectric sensor in the other direction is measured with a strong pressure and the piezoelectric sensor in the one direction of the thigh sensing portion is measured with a weak pressure and when the piezoelectric sensor in the other direction is measured with a strong pressure, You can judge by posture.

In the control unit, at least one attitude pattern corresponding to the normal attitude and the attitude attitude is set in advance, and the attitude can be determined as a dangerous attitude when the measured attitude pattern of the user does not correspond to the predetermined attitude patterns.

The posture feedback unit may include a first notification unit for informing the user of information on the measured posture of the user as a signal composed of a visual signal, an auditory signal, a tactile signal, and a combination of at least one of them.

The first notification unit may be mounted on the armrest of the chair.

The posture feedback unit includes a second communication unit that includes a first communication unit that transmits information on the measured posture of the user to an external device and receives information on the posture of the user; And a second notification unit informing the user of a visual signal, an auditory signal, a tactile signal, and a signal composed of a combination of at least one of them.

The posture feedback unit includes a third communication unit that receives the measured pressure signals and includes a first communication unit that transmits pressure signals measured by the posture sensing unit to an external device, And a signal processing unit for determining whether or not the attitude of the user is normal by comparing the first attitude information with the first attitude information and the second attitude information, wherein the third communication unit can transmit attitude information of the determined user to the attitude feedback unit or the first electronic device have.

According to an embodiment of the present invention, a smart fiber on which a piezoelectric sensor is mounted is configured as a backrest part and a seat part of a chair, so that it can be applied to a chair having various structures, It is possible to provide an attitude control system using smart fibers capable of accurate attitude measurement.

According to an embodiment of the present invention, it is possible to provide an attitude control system having excellent user accessibility and convenience, which enables the attitude measurement to be performed even if the user is not always worn.

According to an embodiment of the present invention, the attitude sensing unit may be constituted of smart fibers including piezoelectric sensors, the pressure according to the attitude of the user may be sensed, the attitude of the user may be measured through the signal processing module, It is possible to provide an attitude control system using smart fibers capable of feedback to the user.

According to an embodiment of the present invention, it is possible to provide an attitude control system capable of precise attitude measurement and providing multimodal feedback to induce attitude correction.

1 is a block diagram schematically showing the configuration of a posture control system using smart fibers according to an embodiment of the present invention.
2 is a perspective view schematically showing a posture control system using smart fibers according to an embodiment of the present invention.
3 is a perspective view schematically showing a normal posture pattern of the posture control system according to an embodiment of the present invention.
4 is a perspective view schematically showing a cautious attitude pattern according to an embodiment of the present invention.
5 is a perspective view schematically showing a risk posture pattern according to an embodiment of the present invention.
Fig. 6 is a perspective view schematically showing a cautious attitude pattern according to an embodiment of the present invention.
7 is a perspective view schematically showing a cautious attitude pattern according to an embodiment of the present invention.
8 is a diagram schematically illustrating an attitude feedback unit and a first electronic device according to an embodiment of the present invention.
9 is a diagram illustrating a first electronic device in accordance with various embodiments of the present invention.

These embodiments are capable of various modifications and various embodiments, and specific embodiments will be described in detail with reference to the drawings. It is to be understood, however, that it is not intended to limit the scope of the specific embodiments but includes all transformations, equivalents, and alternatives falling within the spirit and scope of the disclosure disclosed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the embodiments of the present invention,

In the embodiment, 'module' or 'sub' performs at least one function or operation, and may be implemented in hardware or software, or a combination of hardware and software. In addition, a plurality of 'modules' or a plurality of 'parts' may be integrated into at least one module except for 'module' or 'module' which need to be implemented by specific hardware, and implemented by at least one processor (not shown) .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding elements are denoted by the same reference numerals, and a duplicate description thereof will be omitted.

FIG. 1 is a block diagram schematically showing a configuration of a posture control system using smart fibers according to an embodiment of the present invention, and FIG. 2 is a block diagram schematically showing a posture control system using smart fibers according to an embodiment of the present invention. It is a perspective view.

Hereinafter, with reference to FIG. 1 and FIG. 2, a description will be given of a posture control system using smart fibers according to a specific embodiment of the present invention.

The posture control system using smart fibers according to an embodiment of the present invention includes a posture sensing unit, a control unit, and an attitude feedback unit.

The posture sensing unit includes a first vertebrae sensing unit 11, a second vertebrae sensing unit 13, a buttock sensing unit 21, and a thigh sensing unit 23, each of which is composed of two or more piezoelectric sensors.

In the present specification, " smart fiber " refers to the hatched portion in Fig. 2, and refers to a fiber portion constituting the back portion and the seat portion of the chair on which the orientation detection unit is mounted. That is, according to one embodiment of the present invention, the backrest and the seat portion of the chair are provided in a smart fiber form in which the posture detecting unit is mounted, thereby providing an attitude control system capable of measuring the posture simply by sitting the user.

In the embodiment of FIG. 2, each of the sensing units includes four piezoelectric sensors. However, the present invention is not limited thereto, and two or more piezoelectric sensors may be configured to be symmetrical with respect to the user's spine.

2, the first vertebrae sensing units 11a, 11b, 12a and 12b and the second vertebrae sensing units 13a, 13b and 14a and 14b are mounted on the backrest 10 of the chair 1, The upper spine in the head direction, and the lower spine in the paper direction. In other words, the first vertebra sensing parts 11a, 11b, 12a and 12b are arranged to measure the pressure corresponding to the left and right sides of the upper part of the vertebra, and the second vertebra sensing parts 13a, 13b, 14a, And to measure the pressure corresponding to the left and right sides of the lower portion.

The bumper sensing portions 21a, 21b, 22a and 22b and the bumper sensing portions 23a, 23b and 24a and 24b are provided on the seat 20 of the chair 1 in the direction of the backrest 10, Respectively. In other words, the buttock sensing portions 21a, 21b, 22a and 22b are arranged to measure the pressure corresponding to the left and right sides of the hip portion of the user, and the thigh sensing portions 23a, 23b, 24a, To measure the pressures corresponding to the left and right sides of the cylinder.

Accordingly, when the user sits on the chair 1, the climbing of the chair 1 measures the attitude of the portion corresponding to the left / right side of the upper vertebra and the lower vertebra in the vertebrae 10, It is possible to estimate whether the user's posture is a normal posture by measuring the posture of the portion corresponding to the left and right sides of the buttocks and the thighs in the part 20 and to feedback on the user's posture.

In the embodiment of FIG. 2, each of the sensing units is formed to have a single row structure. However, the present invention is not limited thereto and may be formed in a plurality of rows depending on the size of the applied product.

The control unit 30 can determine whether the user's posture is normal by comparing the user's posture according to the measured pressure signal from the posture sensing unit and a predetermined reference posture. Information about the posture of the user determined by the control unit 30 is transmitted to the posture feedback unit and is formed to notify the user thereof.

Specifically, in the control unit 30, the intensity of the pressure sensed by the piezoelectric sensors is determined based on the pressure when the user sits in the predetermined reference posture, and the intensity of the measured pressure is greater than the pressure in the reference posture A weak pressure when the pressure is smaller than a preset value and an intermediate pressure when the pressure is between a strong pressure and a weak pressure; The posture pattern of the user measured according to the posture pattern represented by a strong pressure, a weak pressure, or an intermediate pressure with respect to the spine sensing unit, the buttock sensing unit and the thigh sensing unit can be determined as a normal posture, a cautionary posture, and a dangerous posture.

This pressure step is stored in the storage part 33 connected to the control part 20 so that the user can use it without resetting the pressure step each time. The storage unit 33 may be configured to store or manage a posture pattern or a posture warning history of a user, which will be described later.

According to one embodiment, in the first use, the user maintains the sitting position on the chair 1 for a predetermined period of time in the reference posture, so that the pressure step corresponding to the weight of the user for each of the piezoelectric sensors is set to a strong pressure, Can be set.

The user may be formed to divide the posture pattern of the user into a normal posture and a dangerous posture according to the distribution of the pressure pattern measured by each sensing unit. If the posture pattern is not maintained in a normal posture or a dangerous posture, It can be formed to divide into an attitude that can become an element.

3 is a perspective view schematically showing a normal posture pattern of the posture control system according to an embodiment of the present invention.

According to one embodiment of the present invention, the reference posture is obtained by attaching the upper and lower spine portions of the user to the backrest portion 10 of the chair 1 and placing the user's two legs flat on the seat portion 20 The control unit 30 can determine the normal posture when the pressures detected by the piezoelectric sensors are all the intermediate pressures as shown in FIG. 8 (a).

Hereinafter, in FIGS. 3 to 7, the piezoelectric sensor is indicated by "red" color when the pressure measured by the piezoelectric sensor is a strong pressure, "orange" when the pressure measured by the pressure sensor is intermediate pressure, In case of weak pressure, it is marked with "yellow" color.

Referring to FIG. 3, when the user sits in a so-called " right posture " in which the user does not need calibration, the spine portion and the leg portion are all stuck to the backrest portion 10 and the seat portion 30, It can be confirmed that the intermediate pressure is measured in both of the first vertebrae 12, the second vertebrae sensing units 13 and 14, the buttock sensing units 15 and 16, and the thigh sensing units 17 and 18. In other words, in the case of an attitude pattern recognized as an intermediate pressure in the entire sensing portion, it can be determined as a normal attitude or a proper attitude.

Since the normal posture has a pattern composed of the intermediate pressure, it can be applied to initially set the reference value by classifying the strong, medium, and weak pressures of the piezoelectric sensors as the reference posture. Accordingly, according to an embodiment of the present invention, it is possible to provide an attitude control system that can be applied to the user regardless of the weight and the body shape of the user.

4 is a perspective view schematically showing a cautious attitude pattern according to an embodiment of the present invention.

In the present specification, the attitude of attitude is not classified into a normal attitude and a dangerous attitude, but it is an attitude that can be irrelevant to the user's musculoskeletal system continuously. In other words, it is not necessary to calibrate or immediately calibrate. Concretely, it is possible to hold for about 5 minutes to 10 minutes. Therefore, in the case of this attitude, it can be set to give feedback to the user only when it is confirmed to be maintained for a preset time.

In the case of the embodiment of Fig. 4, an example of the attitude attitude pattern is a perspective view showing an attitude in which the upper body is leaning (see Fig. 8 (b)).

The attitude pattern measured by the controller 30 is a weak pressure measured by the first vertebra sensing units 11 and 12 and the pressure measured by the second vertebra sensing units 13 and 14 is a weak pressure The upper body is classified into an attitude pattern having a leaning posture when the pressure measured at the hip portion sensing means 15 is an intermediate pressure and the pressure measured at the thigh sensing portion 17 and 18 is a strong pressure In this case, it can be classified into attitude.

5 is a perspective view schematically showing a risk posture pattern according to an embodiment of the present invention.

On the other hand, dangerous posture is an attitude that requires immediate correction. Concretely, if it is recognized that the posture can be maintained for about 5 minutes or less, immediate posture correction is required.

5, the pressure measured by the first vertebrae sensing units 11 and 12 is an intermediate pressure, and the second vertebrae sensing units 13 and 14 and the buttock sensing units 15 and 16 ) Is a weak pressure. The pressure measured at the thigh detecting portions 17, 18 disposed at the end of the seat portion 20 is a strong pressure.

The above-described attitude pattern is input to the control unit 30 in advance, and when the attitude pattern is recognized, it can be determined to be a dangerous position and fed back to the user.

On the other hand, in the case of a normal posture, the number of patterns that can be seen as a normal posture is very small. In the case of the attitude attitude, the number of patterns is slightly deformed in the normal attitude but is more than that in the normal attitude, but the number of patterns will be limited. However, in the case of a dangerous posture, there will be many postures. Therefore, according to an embodiment of the present invention, the controller may be configured to compare the measured attitude pattern with the measured attitude pattern by setting the attitude pattern in advance in the case of the normal attitude and the attitude attitude. However, in the case of a dangerous posture, since the posture patterns thereof vary, it is possible to set both the normal posture and the case of not the attitude attitude pattern to be classified as a dangerous attitude.

Accordingly, the control unit 30 can set the pattern corresponding to the dangerous position as described above. However, one or more of the posture patterns corresponding to the normal position and the attitude can be set in advance, If it does not correspond to the set posture patterns, it can be determined to be a dangerous posture.

FIG. 6 is a perspective view schematically showing a user's attitude pattern in a state in which a user's right leg is woven according to an embodiment of the present invention, and FIG. 7 is a perspective view Fig.

According to the embodiment of the present invention, the left and right sides of the chair 1 can be divided to set the posture pattern.

More specifically, two or more piezoelectric sensors in each of the first vertebra sensing part, the second vertebra sensing part, the hip part sensing part, and the thigh sensing part are divided into left and right directions based on the user, The first left vertebrae sensor 11, the left first vertebrae sensing unit 12, the right second vertebrae sensing unit 13, the left second vertebrae sensing unit 14, the right buttock sensing unit 15, the left buttock sensing unit 16, The right thigh detecting portion 17 and the left thigh detecting portion 18, respectively.

For example, when the left leg or the right leg is seated in a lace state, it is necessary to distinguish between the left side and the right side. However, in this case, the posture is not classified as a normal posture or a dangerous posture, but if the posture is maintained for a certain period of time, it may be set as a posture pattern because the posture is necessary.

In this case, the piezoelectric sensor in either the left or right direction in the first vertebrae sensing unit and the second vertebrae sensing unit is measured with a weak pressure, the piezoelectric sensor in the other direction is measured with an intermediate pressure, Wherein the piezoelectric sensor in one direction is measured at an intermediate pressure, the piezoelectric sensor in the other direction is measured at a strong pressure, the piezoelectric sensor in the one direction of the thigh sensing portion is measured at a weak pressure, The control unit 30 can determine that the user is in a state of caution.

Specifically, FIG. 6 shows that, in the case of the attitude pattern in which the user is lined with the right leg, the pressure measured by the right first vertebrae sensing part 11 and the right second vertebrae sensing part 13 based on the user is a weak pressure , The pressure measured at the left first vertebrae sensing part 12 and the left second vertebrae sensing part 14 is measured at an intermediate pressure. The pressure measured at the right buttock sensing part 15 is an intermediate pressure, the pressure measured at the left buttock sensing part 16 is a strong pressure, the pressure measured at the right thigh sensing part 17 is a weak pressure, The pressure measured at the left femoral sensing portion 18 becomes a strong pressure. Then, the attitude pattern having such a pressure distribution will be classified as the attitude attitude.

7, the pressure measured by the right first vertebrae sensing unit 11 and the right second vertebrae sensing unit 13 based on the user is an intermediate pressure in the case of a posture pattern in which the user is twisted with the left leg, The pressure measured at the left first vertebrae sensing part 12 and the left second vertebrae sensing part 14 is measured at a weak pressure. The pressure measured at the right buttock sensing part 15 is a strong pressure, the pressure measured at the left buttock sensing part 16 is an intermediate pressure, the pressure measured at the right thigh sensing part 17 is a strong pressure, The pressure measured at the left thigh sensing portion 18 becomes a weak pressure. Then, the attitude pattern having such a pressure distribution will be classified as the attitude attitude.

8 is a schematic view for explaining an attitude feedback unit according to an embodiment of the present invention.

The posture feedback unit may include a first notification unit 31 that informs the user of information about the measured posture of the user in the form of a visual signal, an audible signal, a tactile signal, and a signal composed of a combination of at least one of them.

In particular, feedback can be provided to the user in different ways, depending on whether it is a normal posture, a cautious posture, and a dangerous posture.

In the embodiment of FIG. 8 (a), the user is seated in the normal posture, and in the case of the normal posture, no warning signal is generated in the module. However, if you are sitting for more than 4 hours, you can provide feedback to guide the user to periodically stretch or loosen the muscles.

In the case of the embodiment of FIG. 8 (b), when the user is sitting in a state in which the upper body is exited forward, and in the case of the state of attitude, Signal can be generated. For example, it is possible to accumulate counts every five minutes and generate an instantaneous warning signal when the cumulative count reaches two.

In the case of the embodiment shown in FIG. 8 (c), the user is sitting in a dangerous posture as a posture in which the user pushes the buttocks forward. In the case of a dangerous posture, a warning signal can be generated immediately regardless of the duration.

In the case of the warning signal, it may be a time signal, an auditory signal, a tactile signal, and a multimodal signal composed of a combination of at least one of them. (B) and (c) of FIG. 8) by using a haptic sensor, or by using a haptic sensor to display a visual signal such as a light or a graphic on a display, To alert the user. In addition, since the recognition speed of the multiple signals is faster than that of the single signal, the user is warned by a multimodal signal composed of at least one of them, thereby prompting the user to quickly correct the posture.

According to an embodiment of the present invention, the first notification unit 31 may be mounted on the armrest of the chair 1. [ Especially, it can be mounted on the left armrest based on the user. The right brain is excellent in spatial information processing ability, and the left part is quicker in response to the warning signal. Therefore, it can be mounted on the left armrest.

On the other hand, the posture duration or the feedback interval may be provided in advance, but the posture feedback unit may further include a user input unit so that the user can adjust the posture duration or the feedback interval. Specifically, the first notification unit 31 and the user input unit are mounted together on the left armrest so that the user can easily operate the apparatus.

9 is a schematic diagram illustrating a first electronic device according to an embodiment of the present invention.

The posture feedback unit may include a first communication unit (35) that transmits information on the measured posture of the user to an external device.

According to an embodiment, the control unit 30 transmits information about the user's attitude to the first communication unit 35 and transmits the information to the first external electronic device (for example, the computer 43a or the mobile communication terminal 44a) , And may be formed to inform the user of a visual signal, an auditory signal, a tactile signal, and a signal composed of a combination of at least one of them.

That is, the first electronic device includes a second communication unit 41 that communicates from the first communication unit 35, a second notification unit 43 that notifies the second communication unit 41 of a time signal, an auditory signal, a tactile signal, . ≪ / RTI >

Accordingly, it can be formed to graphically represent the current user's posture on the display, generate sound, or generate vibration in cooperation with the computer or the mobile communication terminal.

In addition, it is also possible to cause the first electronic device 40 to perform a period, a type, a size, and the like of a signal for feedback.

The first electronic device 40 may be configured to operate in conjunction with a first notification and user input mounted on the chair and may basically generate a warning signal or set a signal period in the chair armrest, The electronic device 40 can also be configured to be adjustable together through interlocking.

The posture feedback unit includes a first communication unit (35) for transmitting the pressure signals measured by the posture sensing unit to an external device, a third communication unit (51) for receiving the measured pressure signals, And a signal processor 53 for comparing the posture of the user with the preset reference posture to determine whether the user's posture is normal.

That is, the chair receives signals from the piezoelectric sensors and sends them to the external second electronic device 50 through the first communication unit 35 and the third communication unit 51, (53), and transmits a feedback signal. Accordingly, only a minimum number of parts can be mounted on the chair, and a single second electronic device 50 can be used to control a plurality of chairs.

The second electronic device 50 and the first electronic device 40 may be implemented in the same device, but may also be implemented as separate devices. Accordingly, the third communication unit 35 transmits the determined attitude information of the user to the posture feedback unit or the first electronic device 50, and sends a warning signal to the chair itself or through a separate terminal And may be configured to send a warning signal.

According to various embodiments of the present invention, since the backrest portion and the seat portion of the chair are formed by using the fiber loaded with the piezoelectric sensor, it can be applied to various types of chairs and has high flexibility. It is possible to provide an attitude control system capable of measuring an accurate attitude.

In addition, since the posture can be measured even if the user is not always wearing the seat, it is possible to provide an attitude control system excellent in user accessibility and convenience.

Also, it is possible to provide an attitude control system capable of feedback to a user at predetermined time intervals and providing multimodal feedback, thereby effectively inducing posture correction. It can also be used to manage user health by using data gathered from everyday using smart devices and sensor technology. It is possible to perform effective treatment and prevention of disease through user's posture management and play a role as a health care device.

1: Chair
10:
11a, 11b, 12a, 12b:
13a, 13b, 14a, 14b:
20:
21a, 21b, 22a, 22b:
23a, 23b, 24a, 24b:

Claims (10)

Wherein the first vertebrae sensing unit and the second vertebrae sensing unit each include a first vertebrae sensing unit, a second vertebrae sensing unit, a buttock sensing unit and a thigh sensing unit, each of which is composed of at least two piezoelectric sensors, And the hindquarter sensing unit and the hindquarter sensing unit are respectively disposed in the seat portion of the chair in a direction opposite to the direction of the backrest portion, respectively;
A controller for comparing the user's attitude according to the measured pressure signal from the attitude sensing unit and a preset reference attitude to determine whether the user's attitude is normal; And
And an attitude feedback unit for informing a user of information about the attitude of the user determined by the control unit.
2. The apparatus according to claim 1,
The intensity of the pressure sensed by the piezoelectric sensors is determined based on the pressure when the user sits in the predetermined reference posture,
A weak pressure when the pressure in the reference posture is smaller than a predetermined value and an intermediate pressure in the case of the strong pressure and the weak pressure,
The posture pattern of the user measured according to the posture pattern represented by a strong pressure, a weak pressure, or an intermediate pressure with respect to the first vertebra sensing part, the second vertebra sensing part, the buttock sensing part and the thigh sensing part is referred to as a normal posture, And determines that the posture is a dangerous posture.
3. The method of claim 2,
The reference posture is a posture in which the upper spine and the lower vertebrae portion of the user are attached to the backrest portion of the chair and the two legs of the user are placed flat on the seat portion,
Wherein the control unit determines the normal posture when the pressure sensed by the piezoelectric sensors is an intermediate pressure.
3. The method of claim 2,
Wherein the pressure measured by the first vertebrae sensing unit is a weak pressure,
The pressure measured by the second vertebra sensing unit is a weak pressure,
Wherein the pressure measured by the buttock sensing unit is an intermediate pressure,
When the pressure measured by the thigh sensing portion is a strong pressure,
Wherein the control unit determines that the user is in a state of attitude.
3. The method of claim 2,
The two or more piezoelectric sensors in each of the first vertebra sensing unit, the second vertebra sensing unit, the buttock sensing unit and the thigh sensing unit are divided into left and right sides of the user's spine,
The piezoelectric sensor in one of the left and right directions in the first and second vertebrae sensing units is measured at a weak pressure and the piezoelectric sensor in the other direction is measured at an intermediate pressure,
The piezoelectric sensor in the one direction of the hip portion sensing portion is measured at an intermediate pressure, the piezoelectric sensor in the other direction is measured at a strong pressure,
Wherein the piezoelectric sensor in the one direction of the thigh sensing portion is measured with a weak pressure and the piezoelectric sensor in the other direction is measured with a strong pressure,
Wherein the control unit determines that the user is in a state of attitude.
3. The method of claim 2,
Wherein at least one attitude pattern corresponding to the normal attitude and the attitude attitude is set in advance in the control unit, and when the measured attitude pattern of the user does not correspond to the set attitude patterns, system.
The method according to claim 1,
The posture feedback unit includes:
And a first notification unit for informing the user of information on the measured posture of the user as a visual signal, an auditory signal, a tactile signal, and a signal composed of a combination of at least one of the signals.
8. The method of claim 7,
Wherein the first notification unit is mounted on the armrest portion of the chair.
The method according to claim 1,
Wherein the posture feedback unit includes a first communication unit for transmitting information on the measured posture of the user to an external device,
A second communication unit for receiving information on the posture of the user, and a second notification unit for informing the user of the information about the measured posture of the user as a signal composed of a time signal, an auditory signal, a tactile signal, And a second electronic device that is connected to the first electronic device.
10. The method of claim 1 or 9,
Wherein the posture feedback unit includes a first communication unit for transmitting the pressure signals measured by the posture sensing unit to an external device,
A third communication unit for receiving the measured pressure signals; and a second electronic device including a signal processor for comparing a user's attitude with a predetermined reference attitude to determine whether the user's attitude is normal,
And the third communication unit transmits the determined posture information of the user to the posture feedback unit or the first electronic device.

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