KR20220034375A - Textile element sensing direction and intensity of pressure - Google Patents

Abstract

A textile member capable of sensing the direction and intensity of pressure comprises: upper and lower layer units; a support member; and a conductive thread. The upper and lower layer units each form an upper surface and a lower surface. The support member has elasticity between the upper and lower layer units and is connected while being entangled to form a predetermined thickness so as to support the upper and lower layer units. The conductive thread is knitted to the upper and lower layer units to electrically connect the upper and lower layer units. The conductive thread is connected only in a diagonal direction between the upper layer unit and the lower layer unit. In addition, the conductive thread is connected only between two adjacent layers among three adjacent layers between upper layers of the upper layer unit and between lower layers of the lower layer unit.

Description

Textile member capable of sensing pressure direction and strength {TEXTILE ELEMENT SENSING DIRECTION AND INTENSITY OF PRESSURE}

The present invention relates to a fiber member, and more particularly, in a fiber member used in the clothing or industrial textile industry, by connecting a conductive yarn having a predetermined resistance to an air mesh fabric in a specific direction, the direction and pressure of the pressure in the transverse direction It relates to a fibrous member capable of sensing the strength of

In general, in the case of a fiber-based pressure sensor, a capacitive sensor is mainly used to measure an externally applied load.

In the case of such a capacitive sensor, a conductive layer serving as an electrode is disposed in the vertical direction, and a fiber form layer having elasticity as a dielectric is inserted between the conductive layers, and through this, the thickness of the top and bottom conductive layers is inserted. It is characterized in that it senses that the capacitance changes as the is changed.

However, these capacitive sensors have to be basically arranged in a two-dimensional form, and thus have a disadvantage in that air permeability and washability are hindered when arranged in fibers. Furthermore, there is a problem in that the inaccuracy of the measurement value due to noise increases when measuring the fine capacitance value.

Accordingly, in Korean Patent Registration No. 10-2052461, the above problem of the conventional capacitive sensor is solved, and as shown in FIG. 1, the filament yarn 11 is inserted and connected between the air mesh fabric 10 as a support. In the present invention, a technology has been developed that implements a resistance sensor only by knitting and connecting conductive yarns having a predetermined resistance in a vertical direction in a mesh structure, and in particular, a technology capable of precisely measuring a fine capacitance value.

However, in the case of Patent Registration No. 10-2052461, there is a limit in which only the vertical force component can be sensed regardless of the direction of the actual applied force due to the limitation of the knitted connection of the mesh network structure.

Republic of Korea Patent Registration No. 10-2052461

Accordingly, the technical problem of the present invention was conceived in this regard, and the object of the present invention is to connect the conductive yarn having a predetermined resistance to the air mesh fabric in a specific direction, thereby increasing the lateral component and lateral strength of the applied force or pressure. It relates to a fibrous member capable of sensing a pressure direction and intensity that can be sensed.

The fiber member for realizing the above object of the present invention includes upper and lower layer units, a support member and a conductive yarn. The upper and lower layer units form an upper surface and a lower surface, respectively. The support member has an elastic force between the upper and lower layer units and is entangled to form a predetermined thickness to support the upper and lower layer units. The conductive yarn is knitted to the upper and lower layer units to electrically connect the upper and lower layer units. The conductive yarn is connected only in a diagonal direction between the upper layer unit and the lower layer unit. In addition, the conductive yarn is connected only between two adjacent layers of three adjacent layers between upper layers of the upper layer unit and between lower layers of the lower layer unit.

In an embodiment, the conductive yarn may continuously extend between the upper layer unit and the lower layer unit.

In an embodiment, the conductive yarn may be connected in a diagonal direction inclined in only one direction between the upper layers and the lower layers.

In an embodiment, the conductive yarn may be connected to an upper layer adjacent to the right or left side of the upper layer facing the lower layer based on upper and lower layers facing each other in the vertical direction.

In one embodiment, the conductive yarn, when connecting two adjacent upper layers to each other, is not connected to upper layers located on both sides of the interconnected upper layers, but connects two adjacent lower layers to each other In this case, the lower layers respectively positioned on both sides of the interconnected lower layers may not be connected.

In an embodiment, the two upper layers connected to each other and the two lower layers connected to each other may be arranged to face each other in a vertical direction.

In an embodiment, the angle of inclination of the conductive yarn connected to be inclined in the one direction may increase or decrease according to the pressure applied laterally to the upper layer unit or the lower layer unit.

In one embodiment, the direction in which the pressure is applied by comparing the resistance value of the initial state measured in the resistance measurement circuit connected to the conductor and the resistance value measured in the resistance measurement circuit as the inclination angle increases or decreases can be sensed.

In one embodiment, each of the upper and lower layer units may be formed in a mesh network structure in which a plurality of ventilation holes are formed, and the support member may be a filament pile yarn.

According to the present embodiments, the conductive yarn knitted and connected between the upper and lower layer units is connected in a diagonal direction inclined in one direction, and as a whole is connected in a zigzag form, the force or pressure applied in the lateral direction Accordingly, the inclined angle of inclination of the conductor in the inclined state is changed, and this change in inclination angle can induce different amounts of change in resistance or voltage measured from the conductor, and through this, the lateral direction of the applied force or pressure can detect

That is, the preset inclination angle of the conductor is increased or decreased according to the applied pressure or force in the lateral direction, and the resistance or voltage value measured according to the increase or decrease in the inclination angle of the conductor is changed, such resistance or voltage value The direction of the applied pressure or force may be sensed based on the change in .

Furthermore, based on the amount of change in the voltage value according to the inclination angle of the conductor, the strength of the applied pressure or force, that is, the magnitude may also be derived.

Through this, it is applied to clothes to which the fiber member is applied, as well as a medical robot made of a fabric base, and it is possible to derive directions and strengths of various applied forces.

1 is an image showing a conventional air mesh fabric.
2 is a cross-sectional view showing a fiber member according to an embodiment of the present invention.
FIG. 3 is an enlarged view illustrating a state in which a conductive yarn is connected to upper layers and lower layers in the fiber member of FIG. 2 .
4 is a schematic view showing only the connection state of the conductive yarn in the fiber member of FIG. 2, and FIG. 5 is a graph showing the change in resistance according to the pressure state applied to the fiber member of FIG.
6 is a cross-sectional view showing a fiber member according to another embodiment of the present invention.
7 is a schematic view showing only the connection state of the conductive yarn in the fiber member of FIG. 6 , and FIG. 8 is a graph showing the change in resistance according to the pressure state applied to the fiber member of FIG. 6 .
9 is a schematic diagram illustrating an example of a circuit for sensing the resistance of the conductive yarn in the fiber member of FIG. 2 or FIG. 6 .
10 is a schematic diagram illustrating another example of a circuit for sensing the resistance of the conductive yarn in the fiber member of FIG. 2 or FIG. 6 .
11 is a schematic diagram showing another example of a circuit for sensing the resistance of the conductive yarn in the fiber member of FIG. 2 or FIG. 6 .

Since the present invention can have various changes and can have various forms, embodiments will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements. Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this application, terms such as "comprises" or "consisting of" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is an image showing a conventional air mesh fabric.

As shown in FIG. 1, the conventional air mesh fabric has a three-dimensional three-dimensional structure, and has a structure in which a filament yarn 11 having elasticity is inserted and connected as a support between both mesh fabric layers 10, the upper or When pressure is applied to the lower layers 10, the elastic filament yarn 11 is compressed, and when the applied pressure disappears, the filament yarn 11 is restored to its original position.

2 is a cross-sectional view showing a fiber member according to an embodiment of the present invention. FIG. 3 is an enlarged view illustrating a state in which a conductive yarn is connected to upper layers and lower layers in the fiber member of FIG. 2 .

2 and 3 , the fiber member 20 according to the present embodiment includes an upper layer unit 100 , a lower layer unit 200 , a support member 300 , and a conductive yarn 400 .

The structures of the upper and lower layer units 100 and 200 and the support member 300 in this embodiment are substantially the same as the conventional air mesh fabric structure described with reference to FIG. 1 . However, in the present embodiment, the fiber member 20 is further provided with the conductive yarn 400, and by additionally providing the conductive yarn 400, it is possible to sense the direction and intensity of pressure or force applied. characterized.

That is, the upper and lower layer units 100 and 200 may be formed in a plate shape by forming layers of upper and lower surfaces of fabric.

In addition, a plurality of vent holes 110 and 210 may be formed in the cross-section of the upper and lower layer units 100 and 200, respectively, and accordingly, the upper and lower layer units 100 and 200 are formed of a mesh ( mesh) can be formed in a network structure.

That is, the upper and lower layer units 100 and 200 have a mesh network structure as shown in FIG. 1 , and since the cross-section is shown in FIG. 2 , it has a circular shape spaced apart from each other. Although shown, it has a structure substantially connected to each other.

The upper layer unit 100 includes, for example, a plurality of first, second, third and fourth upper layers ( 101 , 102 , 103 , and 104 , and similarly, the lower layer unit 200 includes a plurality of first, second, third and third spaced apart from each other along the lower surface of the support member 300 . It may include 4 lower layers 201 , 202 , 203 , and 204 .

In this case, the number of the upper and lower layers is only selectively illustrated for convenience of description to be described later, and the number is not limited.

In this case, the upper and lower layer units 100 and 200 are not electrically energized even though they are connected to each other. .

Also, between the upper layers and the lower layers, it is sufficient to understand that the layers connected to each other through the conductive wire 400, which will be described later, are connected to be electrically conductive.

On the other hand, the plurality of vents 110 and 210 are formed in each of the upper and lower layer units 100 and 200, and the plurality of vents 110 and 210 have different sizes or the same as each other. It may be formed to have a size.

When such a plurality of ventilation holes 110 and 210 are formed in the upper and lower layer units 100 and 200, the ventilation and drying power of the upper and lower layer units 100 and 200 can be improved. It works.

The support member 300 for supporting the upper and lower layer units 100 and 200 is formed between the upper and lower layer units 100 and 200 . The support member 300 may be, for example, a filament pile yarn having an elastic force.

Therefore, by connecting the space formed between the upper and lower layer units 100 and 200 with a filament pile having elastic force, the upper and lower layer units 100 and 200 can be formed into one fibrous layer having a predetermined thickness. can

In addition, the filament pile yarn, which is the support member 300 , may connect between the upper and lower layer units 100 and 200 while being complicatedly entangled, and the entangled structure may be very diverse and arbitrarily formed.

In this case, the support member 300 is elastically deformed according to an external pressure. When an external force is applied to one of the layers, the support member 300 moves toward the opposite layer and exerts an elastic force to restore the original state when the external force disappears.

Therefore, the support member 300 is compressed when pressed by an external pressure, and is composed of a material that can be quickly restored to its original shape when the external pressure is removed.

For example, the support member 300 may be formed of one of widely known thermoplastic elastomers, such as polyolipi-based, PVC-based, polystyrene-based, polyester-based, polyurethane-based, and polyamide-based, and, in addition, NBR ( Acrylonitrile Butadiene Rubber), SBR (Styrene Butadiene Rubber), butyl rubber (BR), isoprene rubber (IR), chloroprene rubber (CR), silicone rubber, and the like.

The conductive wire 400 includes a connecting conductive wire 410 , an upper conductive wire 420 , and a lower conductive wire 430 .

As shown, the connection conductive wire 410 passes through the support member 300 between the upper and lower layer units 100 and 200 and is connected in a diagonal direction. In this case, the connection conductive wire 410 is connected in a diagonal direction. The connection of is knitted to the upper and lower layer units 100 and 200 and electrically connects the upper and lower layer units 100 and 200 .

Hereinafter, for convenience of description, as connected so as to be organized, it is collectively referred to as connecting.

In the case of this embodiment, as shown in FIG. 2 , the connecting conductor 410 is between the upper and lower layer units 100 and 200 in one direction, that is, in a diagonal direction inclined in the right direction. connect Also, in this case, the inclined state of the connecting conductor 410, that is, the inclination angle (θ, see FIG. 4) of the connected inclination may be constant.

That is, the first connecting conductive yarn 411 of the connecting conductive wire 410 connects the first lower layer 201 and the first upper layer 101 to each other, and the second connecting conductive wire 411 of the connecting conductive wire 410 is connected to each other. The conductive wire 412 connects the second lower layer 202 and the second upper layer 102 to each other.

In FIG. 2 , the first lower layer 201 and the first upper layer 101 , and the second lower layer 202 and the second upper layer 102 are disposed in a diagonal direction to each other, in this case , the first upper layer 101 and the second lower layer 202 are disposed to face each other in a vertical direction, and as a result, the first connecting conductive yarn 411 has a predetermined inclination angle θ and is right connecting the first lower layer 201 and the first upper layer 101 in a diagonal direction inclined to The layer 202 and the second upper layer 102 are connected.

As described above, each of the connecting conductors 420 extends to have a predetermined inclination angle θ in the diagonal direction inclined to the right, and connects the upper and lower layers located in the diagonal direction to each other.

The upper conductive wire 420 connects between the upper layer units 100 . That is, the upper conductive wire 420 selectively electrically connects between the upper layer units 100 .

For example, as illustrated, the first upper conductive yarn 421 of the upper conductive yarn 420 includes the first upper layer 101 and the second upper layer 101 adjacent to the first upper layer 101 in the right direction. The upper layers 102 are connected to each other.

In addition, the second upper conductive yarn 422 of the upper conductive wire 420 connects the third upper layer 103 and the fourth upper layer 104 adjacent to the third upper layer 103 in a right direction to each other. connect

In this case, in the upper conductive wire 420 , the second upper layer 102 and the third upper layer 103 are not connected to each other.

That is, in the upper conductive wire 420 , a pair of adjacent upper layers 101 and 102 are connected to each other, and a pair of consecutive upper layers 102 and 103 are not connected to each other, and eventually adjacent to each other. Among the three upper layers 101 , 102 , and 103 , only two adjacent upper layers are connected to each other.

The lower conductive wire 430 also connects the lower layers to each other in the same manner as the upper conductive wire 420 , and accordingly, in a pair of upper layers and a pair of lower layers disposed to face each other in the vertical direction. , when a pair of upper layers adjacent to each other in the upper part are connected to each other, a pair of lower layers adjacent to each other in the lower part are also connected to each other. The lower layers of the pair are also not connected to each other.

For example, as shown, the first lower conductive yarn 431 of the lower conductive yarn 430 includes the first lower layer 201 and a lower layer adjacent to the first lower layer 201 in the left direction ( no reference number) to each other.

In addition, the second lower conductive wire 432 of the lower conductive wire 430 connects the third lower layer 203 and the second lower layer 202 adjacent to the third lower layer 203 in the left direction to each other. connect

In this case, in the lower conductive wire 430 , the first lower layer 201 and the second lower layer 202 are not connected to each other.

That is, in the lower conductive wire 430, a pair of adjacent lower layers 202 and 203 are also connected to each other, and a pair of consecutive lower layers 203 and 204 are not connected to each other. Among the three lower layers 202 , 203 and 204 , only two adjacent lower layers are connected to each other.

Referring to FIG. 3 , the conductive wire 400 connects the upper and lower layers as a whole, and may extend continuously between the upper and lower layers.

That is, the first lower conductive wire 431 extends to surround the first lower layer 201 , and extends to the first connecting conductive wire 411 to provide the first lower layer 201 and the first upper layer. A first upper conductive wire 421 extending diagonally between 101 and extending to the first connecting conductive wire 411 extends to surround the first upper layer 101 and extends to the first upper layer ( It extends into the second upper layer 102 adjacent to 101 .

In addition, the first upper conductive wire 421 extends to surround the second upper layer 102 , and extends to the second connecting conductive wire 412 to provide the second upper layer 102 and the second lower layer. A second lower conductive wire 432 extending in a diagonal direction between the 202 and extending to the second connecting conductive wire 412 is the second lower layer extending to surround the second lower layer 202 ( It extends into the third lower layer 203 adjacent to 202 .

As described above, the conductive wire 400 continuously connects the lower layers and the upper layers to each other through the connection as shown in FIG. 3 .

In this case, each of the upper and lower layer units 100 and 200 has a circular cross-sectional structure spaced apart from each other as shown, in which case the upper and lower layer units 100 and 200 are each woven into each other. The conductive yarns 400 are woven around the substantially circular-shaped structure.

In addition, the shape of the cross-section of each of the upper and lower layer units 100 and 200 is shown as a circle in FIGS. 2 and 3, but may be formed in a round shape such as a circle or an oval, and accordingly, the conductive wire The elements 400 may be connected in a form surrounding the outer circumferential surface of each of the upper and lower layer units 100 and 200 having the round shape.

Meanwhile, the conductive yarn 400 may be made of a fabric, and may be made of a conductive material having a predetermined resistance. The conductive material may be, for example, silver, copper, aluminum, iron, zinc, nickel, an alloy thereof, or a conductive material of carbon nanotubes, but is not limited thereto.

4 is a schematic view showing only the connection state of the conductive yarn in the fiber member of FIG. 2, and FIG. 5 is a graph showing the change in resistance according to the pressure state applied to the fiber member of FIG.

The conductive wire 400 connected to the upper and lower layer units 100 and 200 in FIGS. 2 and 3 is ultimately connected as in FIG. 4 .

That is, in the conductive yarn 400 , the connecting conductive yarn 410 is inclined to be inclined in the right direction, and has a predetermined inclination angle θ with respect to the lower conductive yarn 430 .

In addition, the lower conductive thread 430 and the upper conductive thread 420 extend in parallel to each other, but the lower conductive thread 430 is alternately connected and interrupted, and the upper conductive thread 420 is also connected and interrupted. This is done alternately.

Thus, as a whole, the conductive wire 400 has a connection as shown in FIG. 4 in a form in which a pair of upper layers and a pair of lower layers are alternately connected to each other.

Meanwhile, when the conductive wire 400 is connected to the upper and lower layer units 100 and 200 , resistance or voltage applied to the conductive wire may be measured through the circuits of FIGS. 9 to 11 to be described later. Hereinafter, for convenience of description, it will be described that the resistance is measured.

That is, in the initial state, when the conductive yarn 400 of the fiber member 20 has a connection in the form shown in FIG. 4 , it may have an initial resistance value of section 'B' as shown in FIG. 5 .

In this case, when a pressure or force (hereinafter, collectively referred to as pressure) is applied to the fibrous member 20 in the transverse direction, the initial resistance value is changed.

In this case, when a pressure in the lateral direction is applied, the conductive yarn 400 is compressed as a whole according to the application of the pressure, and as the conductive yarn 400 is compressed as a whole, the contact between the conductive yarns increases and accordingly As the resistance decreases, it is obvious that the overall resistance value decreases than the initial resistance value.

However, according to which direction the transverse direction is applied, the ratio of the decrease in the resistance value with respect to the initial resistance value is different from each other.

For example, when a pressure in a right direction (→) is applied to the upper layer unit 100 and a pressure in a left direction (←) is applied to the lower layer unit 200, in FIG. As for the conductive wire 400 connected as described above, the pressure is applied in a direction in which the inclination angle θ is relatively decreased. In this case, even if the inclination angle θ is relatively decreased, the state in which the conductive yarn 400 is connected as a whole is maintained.

Accordingly, when pressure is applied in the above direction, as in section 'A' of FIG. 5 , the magnitude of the decreasing resistance value may be maintained relatively small compared to the initial resistance value. That is, since the state in which the conductive wires 400 are connected as a whole is maintained, the degree of contact between the conductive wires 400 is not large, and accordingly, a decrease in the resistance value can be maintained relatively small.

On the other hand, when the pressure in the left direction (←) is applied to the upper layer unit 100 and the pressure in the right direction (→) is applied to the lower layer unit 200, as shown in FIG. In the conductive yarn 400 connected together, pressure is applied in a direction in which the inclination angle θ is relatively increased. In this case, as the inclination angle θ is relatively increased, the degree of compression of the conductive yarn 400 increases, and the initial connection state of the conductive yarn 400 is changed to be relatively less maintained.

Accordingly, when pressure is applied in the above direction, as in section 'C' of FIG. 5 , the magnitude of the decreasing resistance value may be changed relatively large compared to the initial resistance value. That is, since the state in which the conductive wires 400 are connected as a whole cannot be maintained, the degree of contact between the conductive wires 400 is greatly increased, and accordingly, a decrease in the resistance value is relatively significantly increased.

As described above, in a state in which the conductive yarn 400 connected to the fiber member 20 is connected to be inclined in a predetermined direction, the shape in which the conductive yarn 400 is connected is maintained or collapsed depending on the applied lateral pressure. In this case, the degree of decrease in the resistance value is changed compared to the initial resistance value, and the direction of the applied pressure can be detected based on this.

Furthermore, based on the degree of decrease in the resistance value, even the intensity of the applied pressure may be sensed.

6 is a cross-sectional view showing a fiber member according to another embodiment of the present invention.

The fiber member 30 in this embodiment is shown in the figure except that the direction in which the conductive yarn 500 is connected is inclined in the opposite direction to that of the fiber member 20 described with reference to FIG. 2 . It is substantially the same as that of the fibrous member 20 of 2 . Accordingly, the same reference numerals are used for overlapping components, and overlapping descriptions are omitted.

Referring to FIG. 6 , the conductive yarn 500 in this embodiment includes a connecting conductive yarn 510 , an upper conductive yarn 520 , and a lower conductive yarn 530 .

As shown in FIG. 6 , the connecting conductor 510 connects the upper and lower layer units 100 and 200 to each other in one direction, that is, in a diagonal direction inclined to the left. Also, in this case, the inclined state of the connecting conductive yarn 510 , that is, the inclination angle (θ, see FIG. 7 ) of the connected inclination may be constant.

That is, the first connecting conductive yarn 511 of the connecting conductive yarn 510 connects the first lower layer 201 and the first upper layer 101 to each other, and the second connecting conductive yarn 511 of the connecting conductive yarn 510 is connected to each other. The conductive wire 512 connects the second lower layer 202 and the second upper layer 102 to each other.

In FIG. 6 , the first lower layer 201 and the first upper layer 101 , and the second lower layer 202 and the second upper layer 102 are disposed in a diagonal direction to each other, in this case , the second upper layer 102 and the first lower layer 201 are disposed to face each other in a vertical direction, so that the first connecting conductive yarn 511 has a predetermined inclination angle θ and left connecting the first lower layer 201 and the first upper layer 101 in a diagonal direction inclined toward The layer 202 and the second upper layer 102 are connected.

As described above, each of the connecting conductors 520 extends to have a predetermined inclination angle θ in the diagonal direction inclined to the left, and connects the upper and lower layers located in the diagonal direction to each other.

The upper conductive wire 520 connects between the upper layer units 100 . That is, the upper conductive wire 520 selectively electrically connects between the upper layer units 100 .

For example, as shown, the first upper conductive yarn 51 of the upper conductive yarn 520 includes the first upper layer 101 and the upper layer (leftward) adjacent to the first upper layer 101 . no reference number) to each other.

In addition, the second upper conductive yarn 522 of the upper conductive yarn 520 connects the third upper layer 103 and the second upper layer 102 adjacent to the third upper layer 103 in the left direction to each other. connect

In this case, in the upper conductive wire 520 , the first upper layer 101 and the second upper layer 102 are not connected to each other.

That is, in the upper conductive wire 520 , a pair of adjacent upper layers 102 and 103 are connected to each other, and a pair of successive upper layers 103 and 104 are not connected to each other. Among the three upper layers 102 , 103 , and 104 , only two adjacent upper layers are connected to each other.

The lower conductive wire 530 also connects the lower layers to each other in the same manner as the upper conductive wire 520 , and accordingly, in a pair of upper layers and a pair of lower layers disposed to face each other in the vertical direction. , when a pair of upper layers adjacent to each other in the upper part are connected to each other, a pair of lower layers adjacent to each other in the lower part are also connected to each other. The lower layers of the pair are also not connected to each other.

For example, as illustrated, the first lower conductive yarn 531 of the lower conductive yarn 530 includes the first lower layer 201 and the second lower conductive yarn 531 adjacent to the first lower layer 201 in the right direction. The lower layers 202 are connected to each other.

In addition, the second lower conductive yarn 532 of the lower conductive wire 530 connects the third lower layer 203 and the fourth lower layer 204 adjacent to the third lower layer 203 in the right direction to each other. connect

In this case, in the lower conductive wire 530 , the second lower layer 202 and the third lower layer 203 are not connected to each other.

That is, in the lower conductive wire 530, a pair of adjacent lower layers 201 and 202 are also connected to each other, and a pair of consecutive lower layers 202 and 203 are not connected to each other. Among the three lower layers 201 , 202 and 203 , only two adjacent lower layers are connected to each other.

On the other hand, the conductive wire 500 as a whole connects the upper and lower layers, but may extend continuously between the upper and lower layers as in FIG. 3 , and a detailed continuous connection state will be omitted. .

7 is a schematic view showing only the connection state of the conductive yarn in the fiber member of FIG. 6 , and FIG. 8 is a graph showing the change in resistance according to the pressure state applied to the fiber member of FIG. 6 .

The conductive yarn 500 connected to the upper and lower layer units 100 and 200 in FIG. 6 has a form connected as shown in FIG. 7 .

That is, in the conductive yarn 500 , the connecting conductive yarn 510 is inclined to be inclined to the left, and has a predetermined inclination angle θ′ with respect to the lower conductive yarn 530 .

In addition, the lower conductor 530 and the upper conductor 520 extend in parallel to each other, but the connection and interruption of the lower conductor 530 are alternately performed, and similarly, the upper conductor 520 is also connected and interrupted. This is done alternately.

Thus, as a whole, the conductive wire 500 has a connection as shown in FIG. 7 in a form in which a pair of upper layers and a pair of lower layers are alternately connected to each other.

Meanwhile, when the conductive wire 500 is connected to the upper and lower layer units 100 and 200 , resistance or voltage applied to the conductive wire may be measured through the circuits of FIGS. 9 to 11 to be described later. Hereinafter, for convenience of description, it will be described that the resistance is measured.

That is, in the initial state, when the conductive yarn 500 of the fiber member 20 has a connection in the form shown in FIG. 7 , it may have an initial resistance value in the section 'B' as shown in FIG. 8 .

In this case, when a pressure or force (hereinafter, collectively referred to as pressure) is applied to the fibrous member 20 in the transverse direction, the initial resistance value is changed. When the pressure in the transverse direction is applied, the resistance value measured from the conductive yarn 500 is decreased as described above, but, depending on which direction the transverse direction is applied, the initial resistance value is The rate at which the resistance value decreases is different.

For example, when a pressure in a left direction (←) is applied to the upper layer unit 100 and a pressure in a right direction (→) is applied to the lower layer unit 200, in FIG. As for the conductive yarn 500 connected as shown, the pressure is applied in a direction in which the inclination angle θ′ is relatively increased. In this case, even if the inclination angle θ′ is relatively increased (that is, the degree of inclination to the left increases), the state in which the conductor 500 is connected as a whole is maintained.

Accordingly, when the pressure is applied in the above direction, as in the section 'C' of FIG. 8 , the magnitude of the decreasing resistance value may be maintained relatively small compared to the initial resistance value. That is, since the state in which the conductive wires 500 are connected as a whole is maintained, the degree of contact between the conductive wires 500 is not large, and accordingly, a decrease in the resistance value can be maintained relatively small.

On the other hand, when the pressure in the right direction (→) is applied to the upper layer unit 100 and the pressure in the left direction (←) is applied to the lower layer unit 200, as shown in FIG. In the conductive yarn 500 connected together, the pressure is applied in a direction in which the inclination angle θ' is relatively decreased. In this case, as the inclination angle θ ′ is relatively decreased, the degree of compression of the conductive yarn 500 increases (the degree of compression increases as the conductive yarn rises in the vertical direction), and the The initial connection state is changed to be relatively less maintained.

Accordingly, when pressure is applied in the above direction, as in section 'A' of FIG. 8 , as compared to the initial resistance value, the magnitude of the decreasing resistance value may be changed relatively significantly. That is, since the state in which the conductive wires 500 are connected as a whole cannot be maintained, the degree of contact between the conductive wires 500 is greatly increased, and accordingly, a decrease in the resistance value is relatively significantly increased.

As described above, in a state in which the conductive yarn 500 connected to the fiber member 20 is connected to be inclined in a predetermined direction, the shape in which the conductive yarn 500 is connected is maintained or collapsed depending on the applied lateral pressure. In this case, the degree of decrease in the resistance value is changed compared to the initial resistance value, and the direction of the applied pressure can be detected based on this. Furthermore, based on the degree of decrease in the resistance value, even the intensity of the applied pressure may be sensed.

9 is a schematic diagram illustrating an example of a circuit for sensing the resistance of the conductive yarn in the fiber member of FIG. 2 or FIG. 6 . 10 is a schematic diagram illustrating another example of a circuit for sensing the resistance of the conductive yarn in the fiber member of FIG. 2 or FIG. 6 .

First, referring to FIG. 9 as one method for sensing the resistance of the conductive wires 400 and 500 , the upper conductive wire 420 connected to the upper layer unit 100 is connected to a power source to generate a voltage (V). The lower conductive wire 430 that is supplied and connected to the resistor R1 and connected to the lower layer unit 200 is grounded.

In this case, the output voltage Vsense of one end of the upper conductive wire 420 connected to the upper layer unit 100 may be measured, and the upper and lower layer units 100, 200) can measure the output resistance (Rsense) applied to both ends of the connecting conductive wire 410 connected between.

The output resistance Rsense is measured through the following equation (1).

식 (1)

Equation (1)

Alternatively, referring to FIG. 10 as another method for sensing the resistance of the conductor, the upper and lower conductors 420 and 430 connected to each of the upper and lower layer units 100 are formed by a Wheatstone bridge. ) is connected to the circuit.

In this case, the initial resistance (R) of the Wheatstone bridge circuit is as shown in Equation (2) below,

R1 = R2 = R3 = R Equation (2)

The resistors R1, R2, and R3 provided in the circuit are set to have the same resistance value.

In this case, the output voltage Vout of the Wheatstone bridge circuit may be measured through the circuit shown in FIG. 10, and the following equation (3) using the output voltage Vout and the initial resistance R ), the amount of change (ΔR) of the resistance of the connecting conductive wire 410 can be obtained.

식 (3)

Equation (3)

Therefore, when the amount of change (ΔR) of resistance is obtained through Equation (3), it is applied to both ends of the connecting conductor 410 connected between the upper and lower layer units 100 and 200 through Equation (4) below. The output resistance (Rsense) can be measured.

식 (4)

Equation (4)

That is, as described above, the upper and lower conductors 420 and 430 to the outside of the fiber member 20 and 30 are connected to a separate resistance or voltage measuring circuit, and based on the resistance or voltage change, the fiber member A change in resistance of the connecting conductive yarn 410 connected to the inside of 20 and 30 can be measured, and through this, the pressure applied to the fiber members 20 and 30 can be measured.

11 is a schematic diagram showing another example of a circuit for sensing the resistance of the conductive yarn in the fiber member of FIG. 2 or FIG. 6 .

Through the circuit shown in FIG. 11 , it is possible to output a differential voltage between the fiber members 20 and 30 adjacent to each other.

That is, referring to FIG. 9 , when information on the output resistance Rsense is provided through the output resistance Rsense measuring circuit for the fiber member 20, that is, through the above formula (1), the upper conductive yarn ( 420) can measure the output voltage (Vsense) of one end is as described above.

Accordingly, from Equation (1), the output voltage Vsense+ in the circuit connected to the fiber member 20 on the left side of FIG. 11 is derived from the output resistance Rsense1 as in Equation (5) below.

식 (5)

formula (5)

Similarly, from Equation (1), the output voltage Vsense- in the circuit connected to the fiber member 30 on the right side of FIG. 11 is also derived from the output resistance Rsense2 as in Equation (6) below.

식 (6)

Equation (6)

Therefore, in the circuit of FIG. 11, the differential voltage Vsense between the fiber members 20 and 30 on both sides is derived as in Equation (7) below, and in Equation (7), R1>>Rsense1 and R>>Rsense2, the differential voltage Vsense may be derived by Equation (8).

식 (7)

Equation (7)

식 (8)

Equation (8)

As described above, a differential voltage between a plurality of adjacent fiber members 20 and 30 can be derived through a separate circuit configuration connected to the outside of the fiber members 20 and 30 .

According to the present embodiments, the conductive yarn knitted and connected between the upper and lower layer units is connected in a diagonal direction inclined in one direction, and as a whole is connected in a zigzag form, the force or pressure applied in the lateral direction Accordingly, the inclined angle of inclination of the conductor in the inclined state is changed, and this change in inclination angle can induce different amounts of change in resistance or voltage measured from the conductor, and through this, the lateral direction of the applied force or pressure can detect

That is, the preset inclination angle of the conductor is increased or decreased according to the applied pressure or force in the lateral direction, and the resistance or voltage value measured according to the increase or decrease in the inclination angle of the conductor is changed, such resistance or voltage value The direction of the applied pressure or force may be sensed based on the change in .

Furthermore, based on the amount of change in the voltage value according to the inclination angle of the conductor, the intensity of the applied pressure or force, that is, the magnitude may also be derived.

Through this, it is applied to clothes to which the fiber member is applied, as well as a medical robot made of a fabric base, and the direction and intensity of various applied forces can be derived.

Although the above has been described with reference to the preferred embodiment of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the following claims. You will understand that you can.

20, 30: fiber member 100: upper layer unit
101, 102, 103, 104: upper layers
200: lower layer unit
201, 202, 203, 204: lower layers
300: support member 400, 500: conductor
410, 510: connecting evangelist 420, 520: upper evangelist
430, 530: lower evangelist

Claims (9)

upper and lower layer units forming an upper surface and a lower surface, respectively;
a support member having an elastic force between the upper and lower layer units and being entangled to form a predetermined thickness to support the upper and lower layer units; and
It is knitted in the upper and lower layer units and includes a conductive wire electrically connecting the upper and lower layer units,
The conductive yarn is connected only in a diagonal direction between the upper layer unit and the lower layer unit,
The conductive yarn is, between the upper layers of the upper layer unit and between the lower layers of the lower layer unit, the fiber member, characterized in that only between the two adjacent layers of the three adjacent to each other. The method of claim 1, wherein the conducting yarn,
A fiber member, characterized in that continuously extending between the upper layer unit and the lower layer unit. The method of claim 1, wherein the conducting yarn,
A fibrous member, characterized in that connected in a diagonal direction inclined in only one direction between the upper layers and the lower layers. The method of claim 3, wherein the conducting yarn,
Based on the upper and lower layers facing each other in the vertical direction,
The fibrous member, characterized in that the lower layer is connected to an upper layer adjacent to the right or left side of the upper layer facing the lower layer. The method of claim 4, wherein the conducting yarn,
When two upper layers adjacent to each other are connected to each other, the upper layers respectively located on both sides of the connected upper layers are not connected to each other,
When two adjacent lower layers are connected to each other, the fibrous member is not connected to the lower layers respectively positioned on both sides of the interconnected lower layers. 6. The method of claim 5,
The two upper layers connected to each other and the two lower layers connected to each other are arranged to face each other in a vertical direction. 4. The method of claim 3,
According to the pressure applied in the transverse direction to the upper layer unit or the lower layer unit,
The conductive yarn connected to be inclined in the one direction, the fiber member, characterized in that the inclination angle increases or decreases. 8. The method of claim 7,
The resistance value of the initial state measured in the resistance measuring circuit connected to the conductor,
As the inclination angle increases or decreases, the direction in which the pressure is applied is sensed by comparing the resistance value measured by the resistance measuring circuit. According to claim 1,
Each of the upper and lower layer units is formed in a mesh network structure in which a plurality of ventilation holes are formed,
The support member is a fiber member, characterized in that the filament pile yarn.

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