CN218411508U - Flexible textile pressure sensor, pressure identification device and pressure identification system - Google Patents
Flexible textile pressure sensor, pressure identification device and pressure identification system Download PDFInfo
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Abstract
The application provides a flexible weaving pressure sensor, pressure recognition device and pressure recognition system. The flexible textile pressure sensor comprises two attaching structures and a pressure-sensitive material layer, wherein each attaching structure comprises a substrate and a plurality of spaced conductive electrodes positioned on the surface of the substrate, each substrate comprises an insulating cloth and a release material layer positioned on the surface of the insulating cloth, the conductive electrodes are positioned on the surface, far away from the insulating cloth, of the release material layer, and the conductive electrodes are made of conductive cloth; two opposite surfaces of the pressure sensitive material layer are respectively contacted with the conductive electrodes of the two attaching structures. This sensor uses the conductive electrode that electrically conductive cloth made, and conductive electrode and the laminated structure who forms from type material layer can form different structures very conveniently, and the structure flexibility that forms is good and be difficult to the fracture, and is more stable, and then has solved easy fracture, the complicated and with high costs problem of technology of flexible pressure sensor among the prior art.
Description
Technical Field
The application relates to the technical field of sensing, in particular to a flexible textile pressure sensor, a pressure identification device and a pressure identification system.
Background
With the development of semiconductor technology, semiconductor pressure sensors have been developed, and MEMS (micro electronic Mechanical Systems) pressure sensors having a semiconductor substrate are characterized by small volume, light weight, high accuracy, and good temperature characteristics, but have high hardness and are difficult to bend and deform to meet the measurement requirements of irregularly shaped objects such as human bodies. In recent years, with the development of flexible electronic technology, flexible textile pressure sensors and arrays thereof using polymer films as substrates have appeared, and although such pressure sensors can be subjected to bending deformation to measure the pressure applied by objects with irregular shapes, the materials of the pressure sensors are still not soft enough, and the pressure sensors are easy to break in the using process, and meanwhile, the problems of complicated preparation process and high preparation cost exist.
Therefore, a flexible pressure sensor which is not easy to break, simple in process and low in cost is needed.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
The main objective of this application provides a flexible weaving pressure sensor, pressure identification device and pressure identification system to flexible pressure sensor's easy fracture, the complicated and with high costs problem of technology among the solution prior art.
In order to achieve the above object, according to one aspect of the present application, there is provided a flexible textile pressure sensor comprising a layer of pressure sensitive material and two conformable structures, wherein the layer of pressure sensitive material comprises opposing first and second surfaces; two laminated structure is located respectively the both sides of pressure sensitive material layer, laminated structure includes the basement and is located a plurality of spaced conductive electrode made by conductive cloth on the basement surface, the basement is including the insulating cloth that stacks gradually and leave the type material layer, conductive electrode is located keep away from the type material layer insulating cloth is on the surface, two laminated structure conductive electrode respectively with pressure sensitive material layer the first surface and the second surface contact.
Further, the conductive electrode comprises a polyester fiber layer and a metal layer, wherein the polyester fiber layer is positioned on the surface of the release material layer far away from the insulating cloth; the metal layer is located on the surface, far away from the release material layer, of the polyester fiber layer.
Further, the metal layer comprises a first nickel layer, a copper layer and a second nickel layer, wherein the first nickel layer is positioned on the surface, far away from the release material layer, of the polyester fiber layer; the copper layer is positioned on the surface of the first nickel layer far away from the polyester fiber layer; the second nickel layer is located on a surface of the copper layer remote from the first nickel layer.
Further, the material of the release material layer is one of curing agent and cross-linking agent mixed silicone oil and organic fluorine.
Further, the material of the curing agent is one of vinyl triamine and diaminodiphenylmethane.
Further, the material of the cross-linking agent is one of the following materials: polyethylene glycol diacrylate, ethoxylated trimethylolpropane triacrylate, and ethoxylated pentaerythritol tetraacrylate.
Further, the material of the pressure sensitive material layer is an elastomer material doped with a conductive material.
Further, the elastomeric material is one of: polyurethanes, silicone rubbers, natural rubbers, and polyacrylates.
Further, the conductive material is one of: carbon black, carbon nanotubes, carbon fibers, conductive graphite, graphene, gold powder, silver powder, and nickel powder.
Further, the projection parts of the conductive electrodes of the two fitting structures on the pressure-sensitive material layer are overlapped.
According to another aspect of the present application, there is provided a pressure identification device comprising a sensor unit and a control chip, the sensor unit comprising any one of the flexible textile pressure sensors; the control chip is electrically connected with the sensor unit and is used for generating an identification result through at least one piece of data acquired by the sensor unit.
Furthermore, the sensor unit further comprises an amplifying module, a potentiometer module, a high-pass filtering module, a low-pass filtering module and an analog-to-digital conversion module, wherein the amplifying module is provided with a first end, a second end and a third end, and the first end of the amplifying module is electrically connected with the flexible textile pressure sensor; the potentiometer module is electrically connected with the second end of the amplification module and is used for adjusting a resistor so as to adjust the generated voltage; the high-pass filtering module is provided with a first end and a second end, and the first end of the high-pass filtering module is electrically connected with the third end of the amplifying module; the low-pass filtering module is provided with a first end and a second end, and the first end of the low-pass filtering module is electrically connected with the second end of the high-pass filtering module; the analog-to-digital conversion module is provided with a first end and a second end, the first end of the analog-to-digital conversion module is electrically connected with the second end of the low-pass filtering module, and the second end of the analog-to-digital conversion module is electrically connected with the control chip.
According to still another aspect of the present application, a pressure identification system is provided, which includes an intelligent terminal and a pressure identification device, wherein the pressure identification device is in communication with the intelligent terminal, and the pressure identification device is any one of the pressure identification devices.
By applying the technical scheme, the flexible textile pressure sensor comprises a pressure-sensitive material layer and two fitting structures, wherein the pressure-sensitive material layer comprises a first surface and a second surface which are opposite; two laminated structure is located respectively the both sides of pressure sensitive material layer, laminated structure includes the basement and is located the basement is a plurality of spaced conductive electrode made by electrically conductive cloth on the surface, the basement is including the insulating cloth that stacks gradually and from the type material layer, conductive electrode is located keep away from the type material layer insulating cloth is on the surface, two laminated structure conductive electrode respectively with the pressure sensitive material layer the first surface and the second surface contact. This sensor uses the conductive electrode that conductive cloth made, and conductive electrode and the laminated structure who forms from type material layer can form different structures very conveniently, and the structure flexibility that forms is good and be difficult to the fracture, and is more stable, and then has solved among the prior art flexible pressure sensor's easy fracture, the complicated and with high costs problem of technology.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
fig. 1 shows a schematic structural diagram of a flexible textile pressure sensor according to an embodiment of the present application;
FIG. 2 shows a schematic view of a conductive electrode structure of a conformable structure according to an embodiment of the present application;
FIG. 3 shows a schematic view of a conductive electrode structure of another conformable structure according to an embodiment of the present application;
FIG. 4 shows a schematic view of a conductive electrode structure of a conformable structure according to another embodiment of the present application;
FIG. 5 shows a schematic view of a conductive electrode structure of another conformable structure according to another embodiment of the present application;
FIG. 6 shows a schematic structural diagram of a pressure identification device according to an embodiment of the present application;
fig. 7 shows a schematic structural diagram of a pressure identification device according to another embodiment of the present application.
Wherein the figures include the following reference numerals:
10. fitting the structure; 20. a layer of pressure sensitive material; 30. a sensor unit; 40. a control chip; 11. a substrate; 100. insulating cloth; 101. a release material layer; 102. a conductive electrode; 301. a flexible textile pressure sensor; 302. an amplifying module; 303. a potentiometer module; 304. a high-pass filtering module; 305. a low-pass filtering module; 306. and an analog-to-digital conversion module.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As described in the background art, the flexible pressure sensor in the prior art has the disadvantages of easy fracture, complex process and high cost, and in order to solve the problems, the application provides a flexible textile pressure sensor, a pressure identification device and a pressure identification system.
In an exemplary embodiment of the present application, there is provided a flexible textile pressure sensor, as shown in fig. 1, comprising: a layer of pressure sensitive material 20, said layer of pressure sensitive material 20 comprising opposing first and second surfaces; two attaching structures 10 respectively located at two sides of the pressure-sensitive material layer 20, where the attaching structures 10 include a substrate 11 and a plurality of spaced conductive electrodes 102 made of conductive cloth and located on a surface of the substrate, the substrate 11 includes an insulating cloth 100 and a release material layer 101 stacked in sequence, the conductive electrodes 102 are located on a surface of the release material layer 101 away from the insulating cloth 100, and the conductive electrodes 102 of the two attaching structures 10 are respectively in contact with the first surface and the second surface of the pressure-sensitive material layer 20; .
The flexible textile pressure sensor comprises a pressure-sensitive material layer and two fitting structures, wherein the pressure-sensitive material layer comprises a first surface and a second surface which are opposite; the two attaching structures are respectively positioned on two sides of the pressure-sensitive material layer, each attaching structure comprises a substrate and a plurality of spaced conductive electrodes made of conductive cloth and positioned on the surface of the substrate, each substrate comprises insulating cloth and a release material layer which are sequentially stacked, each conductive electrode is positioned on the surface, far away from the insulating cloth, of the release material layer, and the conductive electrodes of the two attaching structures are respectively in contact with the first surface and the second surface of the pressure-sensitive material layer. This sensor uses the conductive electrode that conductive cloth made, and conductive electrode and the laminated structure who forms from type material layer can form different structures very conveniently, and the structure flexibility that forms is good and be difficult to the fracture, and is more stable, and then has solved among the prior art flexible pressure sensor's easy fracture, the complicated and with high costs problem of technology.
In practical application, the insulating cloth can be any textile cloth with insulating property. The skip cutting/die cutting process can be used for removing part of the conductive cloth to form the conductive electrode, when the conductive electrode is manufactured, the die can be repeatedly used without re-opening the die under the condition that the distance between the conductive electrodes is the same, and compared with a micro-electro-mechanical system (MEMS) processing technology, the manufacturing cost of the sensor can be reduced. The conductive cloth can be replaced by a modified copper foil material or a modified aluminum foil material, the substrate can be a PET (polyethylene terephthalate) release film, and can also be other materials with release characteristics, and the selection can be carried out by a person skilled in the art according to actual requirements.
Specifically, the conductive electrode may be, but not limited to, a long strip shape, and a person skilled in the art may design according to actual needs, and the release material layer may enable insulation between a plurality of conductive electrodes on one attachment structure, and meanwhile, may enable flexibility of the conductive electrode and make the conductive electrode not easily break, and is more stable.
In an embodiment of the present application, the conductive electrode includes a polyester fiber layer and a metal layer, wherein the polyester fiber layer is located on a surface of the release material layer away from the insulating cloth; the metal layer is positioned on the surface of the polyester fiber layer far away from the release material layer. The conductive cloth formed by the polyester fiber layer and the metal layer is used as an electrode, so that the flexibility of the sensor can be improved, the flexible textile pressure sensor has simple and light structure, is not easy to break, has stable and reliable performance, prolongs the service life of the sensor, can reduce the cost, has thinner thickness, does not have obvious protrusion and foreign body sensation, has higher comfort,
the copper and nickel combination has better conductivity and good corrosion resistance and oxidation resistance, in another embodiment of the application, the metal layer comprises a first nickel layer, a copper layer and a second nickel layer, wherein the first nickel layer is positioned on the surface of the polyester fiber layer far away from the release material layer; the copper layer is positioned on the surface of the first nickel layer far away from the polyester fiber layer; the second nickel layer is located on the surface of the copper layer far away from the first nickel layer. The polyester fiber substrate ensures good air permeability and bending resistance, and the structures of the first nickel layer, the copper layer and the second nickel layer can ensure high conductivity and have good oxidation and corrosion resistance.
In order to make the subsequent pressure sensor be better attached to different substrates according to the use scene, in another embodiment of the present application, the material of the release material layer is one of a curing agent and a cross-linking agent mixed silicone oil and organic fluorine.
In still another embodiment of the present application, the material of the curing agent is one of vinyl triamine and diaminodiphenylmethane. The curing agent enables the release material layer to be easier to form. The function of the cross-linking agent is to generate chemical bonds between linear molecules, so that the linear molecules are connected with each other to form a network structure, thereby improving the strength and elasticity of the material.
In practical applications, the curing temperature of each curing agent is different, the heat resistance of the curing agent is also greatly different, the curing agents are not limited to the above, and those skilled in the art can select the curing agent according to actual needs.
In order to improve the elasticity of the release material layer, in another embodiment of the present application, the material of the cross-linking agent is one of the following materials: polyethylene glycol diacrylate, ethoxylated trimethylolpropane triacrylate, and ethoxylated pentaerythritol tetraacrylate.
In another embodiment of the present application, the material of the pressure sensitive material layer is an elastomer material doped with a conductive material. The elastomeric material and the conductive material in combination may provide both flexibility and conductivity under compression to the pressure sensitive material layer.
In practical application, the ratio of the elastomer material in the pressure-sensitive material layer can be 50% -90%, the ratio of the conductive material can be 0.1% -20%, an organic solvent and an auxiliary agent can be added during the preparation of the pressure-sensitive material layer, the organic solvent can be silicone oil or other alkane solvents, and the auxiliary agent can be sulfate or titanate coupling agent.
In order to ensure that the elastomer material has good flexibility, a wide strain range and good resilience, and can reduce the manufacturing cost of the pressure sensor, in another embodiment of the present application, the elastomer material is one of the following materials: polyurethanes, silicone rubbers, natural rubbers, and polyacrylates.
Specifically, the elastomer material has a porous structure, and the inner walls of pores of the porous structure can adsorb a conductive material having piezoresistive characteristics and a filling material filled in the pores of the porous structure for expanding the range of the pressure sensor. The smaller the Young's modulus of the porous material layer, the higher the sensitivity of the material, and the above-mentioned elastomer material may also be an elastic block copolymer, which can be selected by those skilled in the art according to actual needs.
In another embodiment of the present application, the conductive material is one of: carbon black, carbon nanotubes, carbon fibers, conductive graphite, graphene, gold powder, silver powder, and nickel powder. Carbon black or metal powder is used as a conductive material and is doped in an elastomer material, so that a more perfect conductive network is constructed. In practical applications, the conductive material may be other conductive polymers, and those skilled in the art can select the conductive material according to practical requirements.
In practical applications, the basic operating principle of the resistive pressure sensor is to convert the change of the measured pressure into the change of the resistance value of the sensor. The resistance type pressure sensor has the advantages of simple device structure, stable and easily-measured resistance signal, high sensitivity and the like. After elastomer material and conducting material fuse completely, ambient pressure can play the extrusion to the conducting material in the elastomer material, make it reunite, and the conducting material of reunion can make local resistance reduce, and local low resistance of this place can be through rather than the upper and lower conducting electrode of contact from top to bottom on conveying the circuit at sensor terminal, feed back the user end through the circuit, when receiving external stress promptly, the change of self resistance can be caused in the meeting of meeting an emergency that the material produced, and then judge the size that pressure sensor received pressure.
In order to form more sensing points, in another embodiment of the present application, the projected portions of the conductive electrodes of the two above-mentioned attaching structures on the above-mentioned pressure-sensitive material layer are overlapped. If the projections of the two conductive electrodes of the two attaching structures on the pressure-sensitive material layer are overlapped, one upper conductive electrode corresponds to one lower conductive electrode, when the pressure sensor is extruded to the pressure-sensitive material layer under the action of external force, only one conductive path formed by one upper electrode, the pressure-sensitive material layer and the lower electrode is formed, if the parts of the two conductive electrodes of the two attaching structures on the pressure-sensitive material layer are overlapped, one upper conductive electrode can correspond to a plurality of lower conductive electrodes, the conductive paths formed by one upper electrode, the pressure-sensitive material layer and the lower electrode can be multiple, a meshed conductive path can be formed, the number of pressure sensing points is more, and the sensitivity of the pressure sensor is further improved.
Specifically, the bonding structures may be designed to be circular or square, the conductive electrodes may be in the form of strips, as shown in fig. 2, the conductive electrodes 102 on one bonding structure may be arranged on the release material layer 101 in parallel in the transverse direction, as shown in fig. 3, the conductive electrodes 102 on another bonding structure may be arranged on the release material layer 101 in parallel in the longitudinal direction, or, as shown in fig. 4, the conductive electrodes 102 on one bonding structure are arranged on the release material layer 101 in parallel at an angle of 45 degrees in a slanting direction, as shown in fig. 5, the conductive electrodes 102 on another bonding structure may be arranged on the release material layer 101 in parallel at an angle of 135 degrees in a slanting direction. By changing the shapes, the distributions and the like of the conductive electrodes on the two attaching structures, the distribution and the density of a conductive path formed by one upper electrode, the pressure-sensitive material layer and the lower electrode are changed, that is, the distribution and the density of sensing points can be flexibly changed, the convenience of deployment of various applications is improved, and a person skilled in the art can design the shapes of the attaching structures and the shapes and the arrangement modes of the conductive electrodes according to actual requirements.
According to another embodiment of the present application, there is provided a pressure identification device, as shown in fig. 6, comprising a sensor unit 30 and a control chip 40, wherein the sensor unit 30 comprises any one of the flexible textile pressure sensors 301; the control chip 40 is electrically connected to the sensor unit 30, and the control chip is configured to generate a recognition result according to at least one data collected by the sensor unit.
Above-mentioned pressure identification equipment, including sensor unit and control chip, this pressure identification equipment's above-mentioned sensor unit includes arbitrary kind of foretell flexible weaving pressure sensor, this sensor uses the conductive electrode that conductive cloth made, conductive electrode and the laminated structure who forms from type material layer can form different structures very conveniently, and the structure flexibility of formation is good and be difficult to the fracture, and is more stable, and then the easy fracture of flexible pressure sensor among the prior art has been solved, the complicated and with high costs problem of technology, above-mentioned control chip is connected with above-mentioned sensor unit electricity, can discern the pressure that the object to be measured received through control chip high frequency and low-power consumption ground.
In order to more efficiently use the sensor unit for pressure identification, in another embodiment of the present application, as shown in fig. 7, the sensor unit 30 further includes an amplifying module 302, a potentiometer module 303, a high-pass filtering module 304, a low-pass filtering module 305, and an analog-to-digital conversion module 306, wherein the amplifying module 302 has a first end, a second end, and a third end, and the first end of the amplifying module 302 is electrically connected to the flexible textile pressure sensor 301; the potentiometer module 303 is electrically connected to a second end of the amplification module 302, and the potentiometer module 303 is used for adjusting a resistance to adjust the generated voltage; the high-pass filtering module 304 has a first end and a second end, and the first end of the high-pass filtering module 304 is electrically connected to the third end of the amplifying module 302; the low-pass filtering module 305 has a first terminal and a second terminal, and the first terminal of the low-pass filtering module 305 is electrically connected to the second terminal of the high-pass filtering module 304; the analog-to-digital conversion module 306 has a first end and a second end, the first end of the analog-to-digital conversion module 306 is electrically connected to the second end of the low pass filter module 305, and the second end of the analog-to-digital conversion module 306 is electrically connected to the control chip 40.
In practical application, the identification result can be displayed, the user can know the identification result in time, the user can check the identification result conveniently, the user can perform other processing according to the identification result, according to another embodiment of the application, the pressure identification system comprises the intelligent terminal and the pressure identification device, wherein the pressure identification device is communicated with the intelligent terminal, and the pressure identification device is any one of the pressure identification devices.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) The flexible textile pressure sensor comprises a pressure-sensitive material layer and two fitting structures, wherein the pressure-sensitive material layer comprises a first surface and a second surface which are opposite; the two attaching structures are respectively positioned on two sides of the pressure-sensitive material layer, each attaching structure comprises a substrate and a plurality of spaced conductive electrodes made of conductive cloth and positioned on the surface of the substrate, each substrate comprises insulating cloth and a release material layer which are sequentially stacked, each conductive electrode is positioned on the surface, far away from the insulating cloth, of the release material layer, and the conductive electrodes of the two attaching structures are respectively in contact with the first surface and the second surface of the pressure-sensitive material layer. This sensor uses the conductive electrode that conductive cloth made, and conductive electrode and the laminated structure who forms from type material layer can form different structures very conveniently, and the structure flexibility that forms is good and be difficult to the fracture, and is more stable, and then has solved among the prior art flexible pressure sensor's easy fracture, the complicated and with high costs problem of technology.
2) The utility model provides an above-mentioned pressure identification device, including sensor unit and control chip, this pressure identification device's above-mentioned sensor unit includes any kind of foretell flexible weaving pressure sensor, this sensor uses the conductive electrode that conductive cloth made, conductive electrode and the laminated structure who forms from type material layer can form different structures very conveniently, and the structure flexibility of formation is good and be difficult to the fracture, and is more stable, and then the easy fracture of flexible pressure sensor among the prior art has been solved, the problem that technology is complicated and with high costs, above-mentioned control chip is connected with above-mentioned sensor unit electricity, can increase the pressure that frequency and low-power consumption ground discernment determinand received through control chip more.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (13)
1. A flexible textile pressure sensor, comprising:
a layer of pressure sensitive material comprising opposing first and second surfaces;
two laminated structure are located respectively the both sides of pressure sensitive material layer, laminated structure includes the basement and is located a plurality of spaced conductive electrode made by conductive cloth on the basement surface, the basement is including the insulating cloth that stacks gradually and leave the type material layer, conductive electrode is located keep away from the type material layer insulating cloth is on the surface, two laminated structure conductive electrode respectively with pressure sensitive material layer the first surface and the second surface contact.
2. The flexible textile pressure sensor of claim 1, wherein the conductive electrode comprises:
the polyester fiber layer is positioned on the surface of the release material layer, which is far away from the insulating cloth;
and the metal layer is positioned on the surface, far away from the release material layer, of the polyester fiber layer.
3. The flexible textile pressure sensor of claim 2, wherein the metal layer comprises:
the first nickel layer is positioned on the surface of the polyester fiber layer far away from the release material layer;
a copper layer located on the surface of the first nickel layer far away from the polyester fiber layer;
a second nickel layer on a surface of the copper layer distal from the first nickel layer.
4. The flexible textile pressure sensor according to claim 1, wherein the material of the release material layer is one of a curing agent and a cross-linking agent mixed with silicone oil and organic fluorine.
5. The flexible textile pressure sensor of claim 4, wherein the material of the curing agent is one of vinyl triamine and diaminodiphenylmethane.
6. The flexible textile pressure sensor of claim 4, wherein the material of the cross-linking agent is one of: polyethylene glycol diacrylate, ethoxylated trimethylolpropane triacrylate, and ethoxylated pentaerythritol tetraacrylate.
7. The flexible textile pressure sensor of claim 1, wherein the material of the pressure sensitive material layer is an elastomeric material doped with a conductive material.
8. The flexible textile pressure sensor of claim 7, wherein the elastomeric material is one of: polyurethanes, silicone rubbers, natural rubbers, and polyacrylates.
9. The flexible textile pressure sensor of claim 7, wherein the conductive material is one of: carbon black, carbon nanotubes, carbon fibers, conductive graphite, graphene, gold powder, silver powder, and nickel powder.
10. The flexible textile pressure sensor of any one of claims 1 to 9, wherein the projections of the conductive electrodes of both of the conformable structures on the layer of pressure sensitive material overlap.
11. A pressure identification device, comprising:
a sensor unit comprising the flexible textile pressure sensor of any one of claims 1 to 10;
and the control chip is electrically connected with the sensor unit and used for generating an identification result through at least one piece of data acquired by the sensor unit.
12. The apparatus of claim 11, wherein the sensor unit further comprises:
the amplification module is provided with a first end, a second end and a third end, and the first end of the amplification module is electrically connected with the flexible textile pressure sensor;
the potentiometer module is electrically connected with the second end of the amplification module and is used for adjusting a resistor so as to adjust the generated voltage;
the high-pass filtering module is provided with a first end and a second end, and the first end of the high-pass filtering module is electrically connected with the third end of the amplifying module;
the low-pass filtering module is provided with a first end and a second end, and the first end of the low-pass filtering module is electrically connected with the second end of the high-pass filtering module;
the analog-to-digital conversion module is provided with a first end and a second end, the first end of the analog-to-digital conversion module is electrically connected with the second end of the low-pass filtering module, and the second end of the analog-to-digital conversion module is electrically connected with the control chip.
13. A pressure identification system, comprising:
an intelligent terminal;
a pressure identification device in communication with the intelligent terminal, the pressure identification device being as claimed in claim 11 or 12.
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| CN202222809496.XU CN218411508U (en) | 2022-10-24 | 2022-10-24 | Flexible textile pressure sensor, pressure identification device and pressure identification system |
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| CN202222809496.XU CN218411508U (en) | 2022-10-24 | 2022-10-24 | Flexible textile pressure sensor, pressure identification device and pressure identification system |
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