KR101766220B1 - Automatic system for guiding correct sitting posture - Google Patents

Abstract

The present invention relates to a correct sitting posture automatic guidance system for automatically analyzing a sitting posture of a seated person using a chair or a cushion so as to guide a correct sitting posture. The correct sitting posture automatic guidance system comprises: a seat package buried in a chair or a cushion, having a pressure sensor array where a plurality of pressure sensors are arranged in rows in a lateral direction; and a portable electronic device extracting a lateral center of contour (COC) through the outermost point, at which a pressure value is measured, among the pressure sensors, calculating a lateral center of mass (COM) based on the pressure values measured by the pressure sensors, extracting a lateral posture variation vector having the lateral COC as a start point and the lateral COM as an end point, and executing a warning or a program for correct posture guidance when the absolute size of the lateral posture variation vector is greater than a predetermined set value. Accordingly, the accurate posture diagnosis can be made in accordance with the sitting posture of the seated person.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automatic guiding system,

The present invention relates to a correct seat posture automatic guidance system for automatically analyzing a sitting position of a seated person using a chair or a cushion to induce a correct sitting posture.

Prior arts belonging to the same technical fields as the present invention include Patent Application No. 2014-0045020 'Seat Attitude Analysis System and Method', Patent Application No. 2014-0148418 'Seat Attitude Measurement Apparatus, Seat Attitude Analysis System and Method', Patent A seat based data analysis system for improving self-adjusting ability, and the like are disclosed.

Particularly, as an invention having a similar concept to the present invention, Patent Application No. 10-2014-0037867 'Posture Calibration Method, Posture Management Apparatus Utilizing It, and Posture Calibration System' have been disclosed.

However, since the prior art including the invention disclosed in the above-mentioned patents does not suggest a method of correctly and accurately grasping the sitting position of a seated person using a chair or a cushion, there is room for misdiagnosis There is a problem in that it is impossible to propose a customized calibration method that is appropriate for a large size.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an improved automatic seating / posture guidance system for accurately and efficiently grasping a sitting position of a seated person.

In order to achieve the above object, the present invention provides a correct seating posture automatic guidance system, comprising: a pressure sensor array which is installed in a chair or a cushion and in which a plurality of pressure sensors are arranged in rows in the left- A sheet package including a package side control section for calculating a pressure value measured from the pressure sensor; And a control unit for receiving the pressure value from the package side control unit by wire or radio and detecting a pressure value of the plurality of pressure sensors from a transverse seating range and a transverse seating contour center Of center of mass (COM) formed by the seated person based on the magnitude of the pressure value measured from the plurality of pressure sensors and the position of each pressure sensor A transverse posture variation vector in which the center of gravity of the transversely seated seat is set as the start point and the center of gravity of the transverse direction is set as the start point, and when the absolute size of the transverse posture transition vector is larger than the predetermined set value, A terminal-side control unit for executing a warning or a program for the terminal; A storage unit for providing a warning or program for correct attitude guidance to the terminal side control unit; And an output unit for outputting the warning or the program by the control unit. The present invention provides a correct seating position automatic guidance system including a portable electronic device.

Here, the terminal-side control unit may be configured to execute a warning or program for correct attitude induction when the transverse posture variation vector continues for a predetermined time or longer within a predetermined error range.

The correct seating posture automatic guidance system may further include a server for storing a warning or a program for guiding the correct posture and wirelessly transmitting the warning or program to the portable electronic device.

In order to achieve the above object, according to the present invention, there is provided a correct seating posture automatic guidance system comprising: a pressure sensor array which is built in a chair or a cushion and in which a plurality of pressure sensors are arranged in rows in the left- A package side control unit for calculating a pressure value measured from the sensor, and a seat package having an alarm part for correct attitude guidance, which is operated by an external input; And a control unit for receiving the pressure value from the package side control unit by wire or wireless and extracting a lateral seating seating area and a lateral seating seating contour center made by the seated person through the outermost point where the pressure value of the plurality of pressure sensors is measured Calculating a lateral center of gravity of the seat occupant based on the magnitude of the pressure value measured by the plurality of pressure sensors and the position of each of the pressure sensors, And a terminal side controller for extracting a transverse postural variation vector having the center of gravity as an end point and operating the alarm part by wire or wireless when the absolute magnitude of the transverse postural variation vector is larger than a predetermined set value The present invention provides a correct seating posture automatic guidance system including a portable electronic device.

Meanwhile, the storage unit may further include a display unit in which the transverse postural transition vector is periodically stored by the terminal-side control unit, and the portable electronic device further includes a display unit in which the stored posture transition vector is displayed in a time- It is possible.

In addition, the correct sitting posture induction system may be configured such that the transverse posture variation vector is periodically received and stored wirelessly by the terminal side control unit, and the stored transverse posture variation vector is wirelessly transmitted to the portable electronic device, The server may further include a server for allowing the portable electronic device to be viewed wirelessly upon request.

Further, the portable electronic device may further include a display unit for displaying information regarding at least the transverse posture variation vector among the information about the transverse contour center, the transverse center of gravity, and the transverse posture variation vector extracted by the terminal side control unit .

As described above, according to the automatic seat occupant guidance system of the present invention, it is possible to analyze the sitting position of the seated person more accurately and efficiently by the pressure sensor array built in the chair or cushion. Accordingly, it is possible to accurately diagnose the posture according to the sitting position of the seated person, and to propose a proper and customized correcting method matching the sitting posture.

1 is a perspective view of a pressure sensor array, which is a component of a correct seat posture automatic guidance system according to an embodiment of the present invention,
FIG. 2 is a plan view showing a state in which the pressure sensor array of FIG. 1 is embedded in a chair,
Figures 3A-3C are plan views illustrating an exemplary seating on the pressure sensor array of Figure 2,
FIG. 4 is a block diagram of a correct seat posture automatic guidance system according to an embodiment of the present invention;
FIG. 5 is a flowchart showing a driving method of a correct seating posture automatic guidance system of FIG. 4,
6 and 7 are a front view exemplarily showing a display screen of a portable electronic device as a component of a correct seat posture automatic guidance system shown in Fig.
8 is a rear view showing an example of a sitting-on seat to be measured,
FIG. 9 is a schematic view for explaining the arrangement of the pressure sensor and the attitude analysis according to the comparative example of the present invention,
10 is a schematic view for explaining a case where the arrangement of the pressure sensor is the same as that of the embodiment of the present invention, but the posture analysis is different;
11 is a schematic view for explaining the arrangement of a pressure sensor according to an embodiment of the present invention,
FIGS. 12A and 12B are front views showing examples in which a seating area is displayed on a display screen of a portable electronic device, which is a component of a correct seat posture automatic guidance system shown in FIG. 4;
13A to 13D illustrate examples of displaying the center of gravity of the lateral seating contour, the center of gravity of the lateral center of gravity, and the transverse posture variation vector on the display screen of the portable electronic device as one component of the correct seating posture automatic guidance system shown in FIG. It is a front view.

The correct seating posture automatic guidance system according to the embodiment of the present invention includes a pressure sensor array 10 as shown in FIG. 1 as a main configuration. The pressure sensor array 10 is embedded in the chair 1 or the cushion as shown in Fig. 2, and is used to measure the pressure distribution with respect to the sitting position of the seated person.

The pressure sensor array 10 has a structure necessary for efficiently and precisely measuring the pressure distribution according to the sitting position of the seated person. Particularly, as a result of repeated and in-depth test by the inventor of the present invention, A main band 12 and a rear band 13 are used for analyzing the sitting position based on the lateral direction of the seated person. The front band 11, the main band 12 and the rear band 13, It is the most efficient way to take a structure of a plurality of pressure sensors 12a closely arranged in the lateral direction.

That is, the main band 12 is a decisive factor in determining the laterally seated outline center of center (COC) and the center of mass (COM) of the seated person, And the pressure sensor 12a is arranged more densely. In the present embodiment, a total of 15 pressure sensors constituting the main band 12 can be identified.

Unlike the main band 12, the pressure sensors 11a and 13a constituting the front band 11 and the rear band 13 at the front are more focused on the presence or absence of the sensing itself than the intensity of the sensing signal.

The front band 11 and the rear band 13 extend in the transverse direction and are arranged side by side. Particularly, the main band 12 is disposed between the front band 11 and the rear band 13 Slightly rear than the center, i.e., closer to the rear band 13. [

The pressure sensor array 10 having the above-described structure can take a sitting position as shown in Figs. 3A to 3C when a seated person sits on the chair 1 in a state of being built in the chair 1 of Fig. 2 have.

3A shows the seating pattern S1 when the seated person is seated in the right posture and the remaining sensors 12a-1 and 12a-15 except the left and right end sensors 12a-1 and 12a-15 on the left and right sides of the main band 12, 2 to 12a-14).

The terminal side control unit 20 of FIG. 4 calculates a lateral seating range and a center of contour (COC) based on the presence or absence of the sensing signals. 3A, since there is no sensing signal in the left and right end sensors 12a-1 and 12a-15 and a sensing signal exists in the remaining sensors 12a-2 to 12a-14, (COC1) of the lateral seating range determined by the sensors 12a-2 and sensor 12a-14, which are left and right outermost sensors in which sensing signals exist.

That is, the method of calculating the lateral contour center (COC) is as follows.

[Formula 1]

COC = (Coordinate of the sensor located on the leftmost of the sensors where the pressure is recognized + Coordinate of the sensor located on the rightmost of the sensors where the pressure is recognized) / 2

The terminal-side control unit 20 can obtain the intensity of the signal sensed by each of the sensors 12a-2 to 12a-14 in which the sensing signal exists, that is, the magnitude of the pressure, (Center Of Mass, COM, COM1 in Fig. 3A) of the seated person based on the positions of the seated persons 12a-2 to 12a-14.

That is, the method of calculating the lateral center of gravity (COM) is as follows.

[Formula 2]

Here, X is the center of gravity (COM), x is the lateral coordinate of each pressure sensor cell, and m is the pressure value.

At this time, when the lateral sitting contour center (COC) coincides with the lateral center of gravity (COM), it can be determined that the seated person is seated in the right posture. As shown in FIG. 3A, If the center of gravity (COC1) is located at the center of the center of gravity (COM1), it means that the seated person tilts to one side of the body. In this case, the control unit 20 may be configured to send out a guidance message to guide the user to the correct posture.

3B, a sensing signal is generated from a total of twelve sensors from the left end sensor 12a-1 of the main band 12 to the sensor 12a-12, and three sensing signals are generated at the remaining right end No signals are generated in the sensors 12a-13 to 12a-15. Therefore, the center of gravity of the lateral seating contour COC2 in this case becomes the center of the sensor 12a-1 at the left end and the sensor 12a-12, and the sensors 12a-1 to 12a-12 ) And the pressure distribution to be sensed, the lateral center of gravity COM2 is determined. FIG. 3B shows a case where the center of gravity contour COC2 and the center of gravity COM2 of the lateral seat coincide with each other. At this time, the controller 20 determines that the seated person is seated in the right posture. However, if necessary, the control unit 20 may transmit a guidance message to the center of the chair.

3C, a sensing signal is generated at the middle sensors 12a-4 to 12a-12 of the main band 12, and at the midpoint there is a contour center COC3, COM3) also coincides with the outline center COC3, so that the control unit 20 can judge the correct posture.

However, in this case, since no sensing signal is generated in any of the sensors 13a constituting the rear band 13, the controller 20 determines that the seated person has not maintained the correct seating posture in the forward and backward directions, In a correct posture with respect to the position, i. E. In the case of FIG. 3c, a message may be sent to move backward.

Similarly, in the case of the sensors 11a constituting the front band 11, a sensing signal is generated in the three sensors on the left side, for example, when the seated person sits on one leg, If the sensing signal is not generated, it is determined that the correct seating posture has not been maintained, and a message indicating that the user is seated in the correct posture may be sent.

On the other hand, when the signals received from the plurality of pressure sensors 12a constituting the main band 12 for a predetermined time, for example, as shown in Figs. 3A to 3C are within a predetermined error range The terminal-side control unit 20 may send a message recommending a rest or a message introducing a stretching program, for example.

As shown in Fig. 4, the pressure sensor array 10 as described above includes a package side control unit 30 such as a microcomputer for generating a sensing signal, a sheet package 2 together with a communication unit 40 for wireless transmission And can be built in the chair (1 in Fig. 2).

The terminal-side control unit 20 includes a wireless transceiver 50 for wirelessly receiving a sensing signal, a storage unit 60 for storing various messages and stretching programs as described above, and a portable electronic device such as a smart phone (3).

5 is a diagram illustrating a procedure performed by the terminal side control unit 20 as described above. When a seated person sits on a chair 1 having a built-in pressure sensor array 10, (S10). Then, based on the intensity of the signal sensed for each sensor, i.e., the intensity and the position of the pressure, the lateral sitting seating contour center (COC) is calculated from the sensing signal received from the sensor The center of gravity COM is calculated (S20).

Then, a lateral posture variation vector V is calculated from the calculated lateral sitting contour center COC as a starting point and the lateral center of gravity COM as an end point, and the absolute value of the lateral posture variation vector V If the size is larger than the predetermined set value C, it is determined that the posture is incorrect, and the guidance for guiding the correct posture is notified in the form of a message or the like (S40). For example, when the lateral center of gravity COM is positioned to the left of the lateral seating contour center (COC), the display section 71, which is a kind of output section (80 in Fig. 4) ≪ / RTI > Or at the same time, output an alarm through a speaker (not shown) which is a kind of the output unit 70.

The alarm may be output through the alarm unit 80, which may be additionally provided on the side of the seat package 2 as shown in FIG. That is, the control signal generated by the terminal-side control unit 20 enables the alarm unit 80 to operate via the control unit 30 on the seat package 2 wirelessly via the wireless transceiver unit 50. Thereby, the seated person can take a correct posture by sensing vibration and / or a warning sound.

On the other hand, when the calculated lateral posture variation vector V is less than the preset value C, it is determined that the user is seated for a long time at a predetermined time (ex. 1 hour), and the guidance such as stretching is displayed in the form of a message (S50). For example, as shown in Fig. 7, a guidance message for notifying the fact of long-time sitting is sent out, and then a message asking whether to execute the program for stretching is sent.

Accordingly, when the user needs guidance of the stretching program, he can coach the stretcher of the seated person while the stretching program stored in the storage unit 60 is executed by clicking the corresponding button.

4, the storage unit 60 is already stored in the portable electronic device 3 of the seated person. However, the present invention is not limited to this case, and if necessary, Warning messages and programs for attitude guidance may be stored and wirelessly transmitted individually at the request of the portable electronic device 3. [

In addition, the terminal-side control unit 20 periodically stores the calculated transverse posture variation vector V in the storage unit 60 every time, for example, and controls the terminal-side control unit 20 in the display portion (71 in Fig. 6).

In addition, the transverse posture variation vector V may be received and stored by the terminal side control unit 20 via the wireless transceiver unit 50 to the server 4 side. At this time, the server 4 can transmit the stored transverse posture variation vector V wirelessly according to a request of the portable electronic device 3, or can wirelessly query the portable electronic device 3 at the request of the portable electronic device 3 You can do it.

The characteristic of the pressure sensor array 12a of the main band 12 as described above will be described in detail. If the number of the sensors arranged in the lateral direction is small, the seated person does not sit in the cushion Even if you sit at a distance of only 1cm ~ 2cm, there may be an error in recognition of your posture. For example, if a seated person is seated in a chair, and is inclined to the right while seated leaning to the left (see FIG. 8), it can be erroneously judged as leaning to the left. However, when extracting the lateral deviation vector (V) based on the lateral seating contour center (COC) as in the present invention, it is possible to accurately recognize whether the seated person is leaning to the left or leaning to the right have.

8, assuming that the seated person 5 sits on the chair 6 and sits on the left side of the seat leaning to the right side, as shown in Fig. 9, The following phenomenon may occur if there are only two pressure sensors 21 and 22, one on the left and the other on the right side (in the figure, the red part is the part where the hips are in contact, and the slightly inclined part is exaggerated ).

That is, only the sensor 21 on the left side is recognized, and the sensor 22 on the right side can not recognize the sitting or can detect only a slight pressure. According to this, only the lateral posture variation vector (V) of -6.0 is extracted. This is a result considering only the center line C of the seat without considering the seating position of the seated person.

In order to prevent this, according to the present invention, as shown in FIG. 10, if the pressure sensor 12a is arranged closely, even if the center line C of the seat is used as a reference, a more accurate measurement will be made 10, a transverse posture variation vector (V) of -1.0 was extracted).

However, even if the sensor is well recognized, if it does not recognize the left and right outline contour lines, it can also be calculated as erroneous information. In other words, although the seat occupant tilts to the right side, the control unit may mistakenly calculate that the seat is leaning to the left side, or may recognize that the leaning to the right side is smaller, thereby failing to give a warning.

Therefore, in order to fully recognize the lateral seating posture, it is necessary to recognize not only the tight sensor 12a but also the left and right contour lines of the sitting position, and calculate the lateral posture variation vector V. [ 11, since the rightmost three sensors do not recognize the pressure, the sitting position can recognize the shift to the left. (The left end sensor 12a-1 and the 12th sensor 12a-12) and the reference point which is the lateral outline center (COC) (1/2) point of the line). Alternatively, the lateral center of gravity COM may be calculated based on the pressure value and a lateral deviation vector (V = + 0.5) connecting the lateral seating contour center (COC) to the lateral center of gravity (COM) have. In other words, if the seated position of the seated person is considered, the seated person sits slightly to the right.

On the other hand, on the basis of the coordinates of the sensor located at the leftmost one of the sensors and the coordinates of the sensor located at the rightmost position where the pressure is recognized, the terminal-side control unit 20 controls the display unit 71 A sitting range as shown in Fig. 12a can be displayed. The above-mentioned seating range may be switched and displayed by a method of displaying the left and right free space of a chair to be seated as shown in Fig. 12B.

The lateral seating center contour center (COC), the lateral center of gravity COM and the transverse posture deviation vector extracted by the terminal side control unit 20 are displayed on the display unit 71 As shown in FIG.

It can be seen in Figure 13 (a) that the center of the lateral seating contour is centerline 101, the center of gravity of the lateral gravity is the sitting image 102, and the transverse posture variation vector 103 is represented by numbers and arrows.

In Fig. 13B, the center of the lateral seating contour is represented by the letters coc and the center line 104, the center of gravity of the lateral direction is represented by the letters com and the arrow 105, and the lateral posture variation vector 106 is represented by numbers and symbols .

13C, the center of the lateral seating contour is represented by a character coc and a center line 107, the center of gravity of a lateral direction is represented by a character com and a coordinate point display 108, a lateral posture variation vector 109 is represented by a numeral and a sign As shown in FIG.

In Figure 13d, the transverse seating contour center is represented by the letter coc and centerline 110 along with the seating range 110a, the transverse center of gravity by the letter com and the line and arrow 111, (112) are represented by numerals and signs.

" 표시의 횡방향 착석 윤곽중심(coc)으로부터의 방향과 거리를 통해 횡방향 자세 변이 벡터에 관한 정보를 디스플레이할 수도 있다.13A to 13D, the center of gravity of the lateral seating contour, the center of gravity of the lateral gravity and the transverse posture variation vector are displayed as they are. However, the present invention is not limited to this case. For example, (See 102 in FIG. 13A) of the character sitting in the chair in proportion to the direction and size of the transverse posture variation vector, and displays information about the transverse posture variation vector by displaying the tilted direction and the tilted angle It is also possible to do this in a way. Similarly, as shown in FIG. 13C,

&Quot; through the direction and distance from the lateral sitting seating contour center " coc "of the display.

Further, the information about the transverse posture variation vector may also be displayed by simply displaying the color of the screen of the display unit 71 in a stepwise fashion of yellow, orange, and red according to the size of the transverse posture variation vector.

It is difficult to understand that the right range and the technical range of the present invention are limited to those described above, since the above described correct seating posture automatic guidance system is only one embodiment for facilitating understanding of the present invention.

The scope of the present invention is defined by the appended claims and their equivalents.

1: Chair 2: Seat Package
3: portable electronic device 4: server
10: Pressure sensor array 11: Front band
12: Main band 13: Rear band
20: terminal side control unit 30: package side control unit
40: communication unit 50: wireless transmission /
60: storage unit 70: output unit
80: Alarm section

Claims (8)

In a correct seating attitude automatic guidance system,
A seat package including a pressure sensor array which is built in a chair or a cushion and in which a plurality of pressure sensors are arranged in rows in the left and right direction and a package side control section which calculates a pressure value measured from the plurality of pressure sensors; And
Side pressure control means for receiving the pressure value from the package side control unit by wire or radio, and a pressure sensor for detecting a pressure value of the pressure sensor, And calculating a center of mass (COM) of the seat based on the magnitude of the pressure value measured from the plurality of pressure sensors and the position of each pressure sensor, A transverse posture variation vector in which the center of the transverse contour is the start point and the transverse direction center of gravity is the end point, and when the absolute size of the transverse posture transition vector is larger than a predetermined set value, A terminal-side control unit for executing a program; A storage unit for providing a warning or program for correct attitude guidance to the terminal side control unit; And an output unit for outputting the warning or program by the control unit.
Wherein the system comprises: The method according to claim 1,
Wherein the terminal-
And a warning or program for correct attitude guidance is executed when the transverse attitude transition vector continues for a predetermined time or longer within a predetermined error range. The method according to claim 1,
Further comprising a server for storing a warning or program for correct attitude guidance and wirelessly transmitting the alert or program to the portable electronic device. In a correct seating attitude automatic guidance system,
A package side control unit for calculating a pressure value measured from the plurality of pressure sensors, a pressure sensor array built in a chair or a cushion, in which a plurality of pressure sensors are arranged in rows in the left and right direction, A seat package having an alarm part for inducing an attitude; And
Side control portion receives the pressure value from the package side control portion by wire or radio and extracts a lateral seating seating range and a lateral seating seating contour center made by the occupant through the outermost point where the pressure value of the plurality of pressure sensors is measured Calculating a transverse center of gravity of the seated person based on the magnitude of the pressure value measured by the plurality of pressure sensors and the position of each pressure sensor, Side control unit for operating the alarm unit in a wired or wireless manner when the absolute value of the transverse attitude transition vector is larger than a predetermined set value by extracting a transverse posture variation vector having a center of gravity as an end point, Electronics
Wherein the system comprises: The method according to claim 1,
Wherein the storage unit stores the transverse posture variation vector periodically by the terminal side control unit,
In the portable electronic device,
Further comprising a display unit in which the stored posture variation vector is displayed in a time-series manner by the terminal-side control unit. The method according to claim 1 or 4,
Wherein the transverse posture variation vector is periodically received and stored wirelessly by the terminal side control unit, and the stored transverse posture variation vector is wirelessly transmitted to the portable electronic device or wirelessly transmitted upon request of the portable electronic device Wherein the server further comprises a server for allowing the user to sit on the floor. The method according to claim 1 or 4,
In the portable electronic device,
Further comprising a display unit for displaying information on at least the transverse posture variation vector among information on the transverse contour center, the transverse direction center of gravity, and the transverse posture variation vector extracted by the terminal side control unit Automatic seating system. 5. The method of claim 4,
Wherein the portable electronic device further includes a storage unit in which the transverse posture variation vector is periodically stored by the terminal side control unit,
In the portable electronic device,
Further comprising a display unit in which the stored posture variation vector is displayed in a time-series manner by the terminal-side control unit.

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