CN214149645U - Flexible wearable pressure sensor based on elastic cloth - Google Patents
Flexible wearable pressure sensor based on elastic cloth Download PDFInfo
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- CN214149645U CN214149645U CN202022880810.4U CN202022880810U CN214149645U CN 214149645 U CN214149645 U CN 214149645U CN 202022880810 U CN202022880810 U CN 202022880810U CN 214149645 U CN214149645 U CN 214149645U
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- 239000004744 fabric Substances 0.000 title claims abstract description 48
- 239000002121 nanofiber Substances 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 238000003618 dip coating Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 6
- 239000004753 textile Substances 0.000 description 6
- 230000004044 response Effects 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 2
- 238000012858 packaging process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
本申请公开了一种基于弹性布的柔性可穿戴压力传感器，涉及柔性压力传感器技术领域，不仅能够在一定的形变下依旧保证较高的灵敏度、较快的响应速度，而且舒适性和灵活性较好。该基于弹性布的柔性可穿戴压力传感器，包括由上至下依次设置的第一柔性电极、离子层和第二柔性电极；第一柔性电极和第二柔性电极均为弹性导电布；离子层为经离子凝胶浸涂改性的弹性离子布。本申请用于提升柔性可穿戴压力传感器的性能。
The present application discloses a flexible wearable pressure sensor based on elastic cloth, which relates to the technical field of flexible pressure sensors. it is good. The flexible wearable pressure sensor based on elastic cloth includes a first flexible electrode, an ionic layer and a second flexible electrode arranged in sequence from top to bottom; the first flexible electrode and the second flexible electrode are both elastic conductive cloth; the ionic layer is Elastic ion cloth modified by ion gel dip coating. The present application is used to improve the performance of a flexible wearable pressure sensor.
Description
Technical Field
The application relates to the technical field of flexible pressure sensors, in particular to a flexible wearable pressure sensor based on elastic cloth.
Background
The flexible pressure sensing technology is a two-dimensional pressure sensing element prepared from flexible materials, and is different from the traditional non-flexible pressure sensing element which is made of non-bendable materials such as a metal cantilever beam and a silicon-based stress sheet, and the flexible pressure sensor mostly uses polymer films, fiber structure materials and the like as construction materials of the sensor. The flexible pressure sensor mainly comprises an electrode and a functional material layer, wherein the electrode is made of high-conductivity metal, conductive carbon material, conductive ceramic material and conductive polymer material, and forms a specific circuit pattern. The functional material layer mainly includes a conductor material, a dielectric material, a piezoelectric material, a triboelectric material, an ionic material, etc. according to different mechanisms, and the corresponding flexible sensing mechanisms are also mainly classified into a piezoresistive type, a parallel plate capacitive type, a piezoelectric type, a triboelectric type, and an ionization type.
The existing stretchable flexible pressure sensor has the defects of low pressure detection precision and poor air permeability under the stretching condition.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a flexible wearable pressure sensor based on elastic cloth, not only can still guarantee higher sensitivity, faster response speed under certain deformation, and travelling comfort and flexibility are better moreover.
In order to achieve the above object, an embodiment of the present application provides a flexible wearable pressure sensor based on elastic cloth, including a first flexible electrode, an ion layer, and a second flexible electrode, which are sequentially arranged from top to bottom; the first flexible electrode and the second flexible electrode are both elastic conductive cloth; the ion layer is elastic ion cloth which is dip-coated and modified by ion gel.
Further, the first flexible electrodes are strip-shaped electrodes and are multiple, and the multiple first flexible electrodes are adhered to the lower side of the first elastic textile fabric side by side; the second flexible electrodes are strip-shaped electrodes and are adhered to the lower side of the second elastic woven cloth side by side; the extending directions of the first flexible electrodes and the second flexible electrodes are perpendicular to each other.
Furthermore, the first flexible electrode and the second flexible electrode are connected with a data reading, controlling and power supply circuit.
Further, the ionic gel is a water-based polyurethane ionic gel.
Further, the elastic conductive cloth is silver nanofiber flexible conductive cloth.
Compared with the prior art, the application has the following beneficial effects:
1. this application introduces into can tensile elasticity weaving cloth with electric formula sensing principle, adopts elasticity electrically conductive cloth as the electrode, makes flexible pressure sensor not only can still guarantee higher sensitivity, faster response speed under certain deformation, and travelling comfort and flexibility are also better moreover.
2. This application adopts the electrically conductive cloth of elasticity as the electrode, and through the electrically conductive cloth of elasticity and data reading, control, power supply circuit's reliability connection, make this application sensor have characteristics such as high signal-to-noise ratio, interference immunity is strong, response speed is fast, the response linearity is good, detectable static pressure.
3. The flexible electrode in this application is a plurality of bar electrodes that set up side by side, and a plurality of electrodes form can tensile large tracts of land high density array, can prepare the circuit of can stretching of large tracts of land high density, can also utilize sensing array to carry out pattern recognition etc. lays good basis for the general application of the wearable pressure sensor of future flexibility and intelligent clothing.
4. A plurality of bar electrodes in this application adhere on corresponding elasticity weaving cloth, and packaging process is simple, with low costs and difficult damage electrode.
5. The embodiment of the application has high sensitivity of 83.36nF & lt- & gt MPa & lt-1 & gt in a non-stretching state, maintains the sensitivity of 39.63nF & lt- & gt MPa & lt-1 & gt in a stretching state, has the response time of 34ms, has excellent repeatability and durability, can detect actions of fingers grasping objects, pressing a mouse and the like, can be used for monitoring pulse signals of a human body, and has a wide application range.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible wearable pressure sensor based on elastic cloth according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a flexible wearable pressure sensor based on elastic cloth according to another embodiment of the present application.
In the figure, 1-first flexible electrode, 2-ion layer, 3-second flexible electrode, 4-first elastic textile cloth, and 5-second elastic textile cloth.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1, the embodiment of the application provides a flexible wearable pressure sensor based on elastic cloth, specifically is a single-point sensor, adopts a sandwich structure, and includes a first flexible electrode 1, an ion layer 2 and a second flexible electrode 3 that are sequentially arranged from top to bottom. The first flexible electrode 1 and the second flexible electrode 3 are both connected with a data reading, controlling and power supply circuit.
First flexible electrode 1 and second flexible electrode 3 are the electrically conductive cloth of elasticity, and is specific, and first flexible electrode 1 and the flexible electrically conductive cloth of the equal silver nanofiber of second flexible electrode 3 compare the flexible electrically conductive cloth of nanofiber, and the electric conductive property of the flexible electrically conductive cloth of silver nanofiber is better. The ionic layer 2 is elastic ionic cloth which is dip-coated and modified by ionic gel. Specifically, the ionic gel is water-based polyurethane ionic gel, and comprises water-soluble imidazole ionic liquid and water-soluble elastic polyurethane solution. The method comprises the specific steps of mixing water-soluble imidazole ionic liquid and water-soluble elastic polyurethane solution according to a set proportion to obtain ionic gel, and then carrying out dip-coating modification on the elastic textile fabric in a dip-coating mode. The embodiment of the application selects the ionic cloth with high unit area capacitance as the middle ionic layer, the stretchable silver nanofiber flexible conductive cloth is used as the electrode, and the upper electrode and the lower electrode cannot be contacted with each other, so that the single-point sensor is manufactured.
Because first flexible electrode 1 and second flexible electrode 3 in this application all are connected with data reading, control, supply circuit, consequently, this application can solve the current flexible sensor ubiquitous problem of crosstalking.
Referring to fig. 2, in order to detect a large-area and high-density detection object, in some embodiments, array sensing is performed, that is, the first flexible electrode 1 and the second flexible electrode 3 are both strip-shaped electrodes, and the number of the first flexible electrode 1 and the second flexible electrode 3 is plural, wherein the plural first flexible electrodes 1 are adhered to the lower side of the first elastic woven fabric 4 side by side, the plural second flexible electrodes 3 are adhered to the lower side of the second elastic woven fabric 5 side by side, and the extending directions of the plural first flexible electrodes 1 and the plural second flexible electrodes 3 are perpendicular to each other. For example, when the number of the first flexible electrodes 1 and the second flexible electrodes 3 is 16 each, an array of 16 × 16 may be formed; when the number of the first flexible electrodes 1 and the second flexible electrodes 3 is 32, an array … … of 32 × 32 may be formed, and fig. 2 is a schematic structural diagram of the 32 × 32 array sensor.
It should be noted that, the number of the first flexible electrodes 1 and the second flexible electrodes 3 may be the same or different, and is not limited herein, and specifically, the number of the first flexible electrodes and the second flexible electrodes needs to be set according to the length and the width of the detection object, but in an area with the same size, the higher the array density is, the higher the resolution of the pressure sensor is, and the higher the accuracy is.
The packaging process of the array sensor comprises the following steps: respectively adhering a plurality of first flexible electrodes 1(M row electrodes) and a plurality of second flexible electrodes 2(N row electrodes) to a first elastic textile fabric 4 and a second elastic textile fabric 5 for transfer printing, and then encapsulating an ion cloth 3 between the two layers of electrodes according to a sandwich structure. Compare the flexible pressure sensor who adopts polymer material (like PDMS) as the building material of sensor now, owing to need not in embedding metal electrode PDMS, and the electrode is the electrically conductive cloth of elasticity, consequently, the gas permeability of this application embodiment is better, the electrode is difficult to destroyed and packaging technology is simpler.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (5)
1. A flexible wearable pressure sensor based on elastic cloth is characterized by comprising a first flexible electrode, an ion layer and a second flexible electrode which are sequentially arranged from top to bottom;
the first flexible electrode and the second flexible electrode are both elastic conductive cloth; the ion layer is elastic ion cloth which is dip-coated and modified by ion gel.
2. The flexible wearable pressure sensor based on elastic cloth of claim 1,
the first flexible electrodes are strip-shaped electrodes and are adhered to the lower side of the first elastic woven cloth side by side;
the second flexible electrodes are strip-shaped electrodes and are adhered to the lower side of the second elastic woven cloth side by side;
the extending directions of the first flexible electrodes and the second flexible electrodes are perpendicular to each other.
3. The flexible wearable pressure sensor based on elastic cloth of claim 1 or 2, characterized in that the first flexible electrode and the second flexible electrode are both connected with data reading, control, power supply circuit.
4. The flexible wearable pressure sensor based on elastic cloth of claim 1, characterized in that the ionic gel is an aqueous polyurethane ionic gel.
5. The flexible wearable pressure sensor based on elastic cloth of claim 1, characterized in that the elastic conductive cloth is a silver nanofiber flexible conductive cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022880810.4U CN214149645U (en) | 2020-12-04 | 2020-12-04 | Flexible wearable pressure sensor based on elastic cloth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022880810.4U CN214149645U (en) | 2020-12-04 | 2020-12-04 | Flexible wearable pressure sensor based on elastic cloth |
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| Publication Number | Publication Date |
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| CN214149645U true CN214149645U (en) | 2021-09-07 |
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| CN202022880810.4U Active CN214149645U (en) | 2020-12-04 | 2020-12-04 | Flexible wearable pressure sensor based on elastic cloth |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414106A (en) * | 2021-12-13 | 2022-04-29 | 中国科学院深圳先进技术研究院 | Flexible pressure sensor of initiative power supply |
| CN114563112A (en) * | 2022-01-20 | 2022-05-31 | 北京科技大学 | A strain-resistant intrinsic stretchable pressure sensing array and its preparation method |
| CN114608716A (en) * | 2022-03-24 | 2022-06-10 | 广东粤港澳大湾区协同创新研究院 | Flexible temperature and pressure bimodal sensor and preparation and test method thereof |
| CN115014591A (en) * | 2022-06-24 | 2022-09-06 | 电子科技大学 | Anti-extravasation monitoring sensor for CT enhanced scanning, preparation method and monitoring equipment |
| WO2023201877A1 (en) * | 2022-04-20 | 2023-10-26 | 慕思健康睡眠股份有限公司 | Flexible sensor and intelligent mat |
-
2020
- 2020-12-04 CN CN202022880810.4U patent/CN214149645U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414106A (en) * | 2021-12-13 | 2022-04-29 | 中国科学院深圳先进技术研究院 | Flexible pressure sensor of initiative power supply |
| CN114414106B (en) * | 2021-12-13 | 2024-04-26 | 中国科学院深圳先进技术研究院 | Active power supply flexible pressure sensor |
| CN114563112A (en) * | 2022-01-20 | 2022-05-31 | 北京科技大学 | A strain-resistant intrinsic stretchable pressure sensing array and its preparation method |
| CN114608716A (en) * | 2022-03-24 | 2022-06-10 | 广东粤港澳大湾区协同创新研究院 | Flexible temperature and pressure bimodal sensor and preparation and test method thereof |
| CN114608716B (en) * | 2022-03-24 | 2023-08-25 | 广东粤港澳大湾区协同创新研究院 | Flexible temperature and pressure bimodal sensor and preparation and testing method thereof |
| WO2023201877A1 (en) * | 2022-04-20 | 2023-10-26 | 慕思健康睡眠股份有限公司 | Flexible sensor and intelligent mat |
| CN115014591A (en) * | 2022-06-24 | 2022-09-06 | 电子科技大学 | Anti-extravasation monitoring sensor for CT enhanced scanning, preparation method and monitoring equipment |
| CN115014591B (en) * | 2022-06-24 | 2024-05-17 | 电子科技大学 | A CT enhanced scanning anti-extravasation monitoring sensor, preparation method and monitoring device |
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