CN111562039A - Textile material-based wearable pressure sensor and manufacturing method thereof - Google Patents
Textile material-based wearable pressure sensor and manufacturing method thereof Download PDFInfo
- Publication number
- CN111562039A CN111562039A CN202010237958.8A CN202010237958A CN111562039A CN 111562039 A CN111562039 A CN 111562039A CN 202010237958 A CN202010237958 A CN 202010237958A CN 111562039 A CN111562039 A CN 111562039A
- Authority
- CN
- China
- Prior art keywords
- fabric
- electrode
- pressure sensor
- soot
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 title abstract description 8
- 239000004753 textile Substances 0.000 title description 4
- 239000004744 fabric Substances 0.000 claims abstract description 55
- 239000004071 soot Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 238000007650 screen-printing Methods 0.000 claims abstract description 9
- 238000010030 laminating Methods 0.000 claims abstract 2
- 238000001035 drying Methods 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000007639 printing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000002759 woven fabric Substances 0.000 claims description 7
- 229920000144 PEDOT:PSS Polymers 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 229920001940 conductive polymer Polymers 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003350 kerosene Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 241000270923 Hesperostipa comata Species 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 238000009958 sewing Methods 0.000 claims description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 claims 2
- 229920000742 Cotton Polymers 0.000 claims 1
- 239000004677 Nylon Substances 0.000 claims 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims 1
- 239000002042 Silver nanowire Substances 0.000 claims 1
- 229920002125 Sokalan® Polymers 0.000 claims 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- 238000003491 array Methods 0.000 claims 1
- -1 diesel Substances 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 claims 1
- 239000003517 fume Substances 0.000 claims 1
- 238000003958 fumigation Methods 0.000 claims 1
- 229920001778 nylon Polymers 0.000 claims 1
- 231100000719 pollutant Toxicity 0.000 claims 1
- 229920002401 polyacrylamide Polymers 0.000 claims 1
- 239000004584 polyacrylic acid Substances 0.000 claims 1
- 229920000728 polyester Polymers 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 5
- 239000004745 nonwoven fabric Substances 0.000 description 22
- 239000010410 layer Substances 0.000 description 17
- 238000000151 deposition Methods 0.000 description 14
- 239000000779 smoke Substances 0.000 description 12
- 230000008021 deposition Effects 0.000 description 11
- 239000002131 composite material Substances 0.000 description 10
- 230000035945 sensitivity Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 230000006698 induction Effects 0.000 description 6
- 238000009832 plasma treatment Methods 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 5
- 239000004005 microsphere Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 4
- 238000007865 diluting Methods 0.000 description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 description 4
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 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 4
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 201000004624 Dermatitis Diseases 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The invention provides a method for manufacturing a fabric material-based wearable pressure sensor with simple process, high efficiency, low cost and excellent performance and the wearable pressure sensor manufactured by the method. The method comprises the following steps: pretreating a fabric substrate; adhesion of soot as a pressure sensing active layer on a fabric substrate; preparing a bottom fabric electrode by a screen printing method; and (4) laminating and assembling the bottom electrode and the soot attachment fabric to obtain the full-fabric wearable pressure sensor. The wearable pressure sensor manufactured by the method has wide application prospect in the fields of intelligent artificial limbs, intelligent clothes, biomedical treatment, robots and the like.
Description
Technical Field
The invention belongs to the field of pressure sensors, and particularly relates to a wearable pressure sensor based on a soot-dust fabric base and a manufacturing method thereof.
Background
Flexible pressure sensor as one kind of wearable device, which can imitate human skin feeling or respond to external stimulation, is widely applied in the fields of physiological signal detection and human-computer interaction (M.Ha, S.Lee, H.Ko.Wearable and flexible sensors for user-interactive health-monitoring devices, journal of materials Chemistry B,2018,6(24): 1030-)
Electronic skins, which have great application prospects in The fields of intelligent prosthetics, real-time medical monitoring and diagnosis, artificial intelligence (robots), etc., have been rapidly developed in recent years (Zang, y.zhang, f.di, c. -a.zhu, d., advanced soft receptors aware identity and health care. Materials Horizons 2015,2(2), 140-. Electronic skin is able to mimic the function of human skin by integrating multiple types of sensors for pressure, strain, temperature, humidity, etc. (Chortos, a.liu, j.bao, z., pure therapeutic electronic skin. nature Materials 2016,15(9), 937-. Among them, the pressure sensor is a key sensor in the electronic skin, which can convert the externally applied force into a detectable electrical signal.
The pressure sensor usually adopts a resistance working mode, and generally adopts the following two structures: 1) conductive material/elastomer composite structure: filling a conductive material into the elastomer substrate to form a composite material, and obtaining the pressure information of the composite material through the change of the piezoresistive property of the composite material; 2) a two-electrode structure based on contact resistance. And (3) coating a conductive material on the surfaces of the two elastic bodies, and obtaining the information of the pressure applied by the change of the contact resistance between the two electrodes. Although the pressure sensors with the two structures have the characteristics of simple working principle, low manufacturing cost, low power consumption and the like, the pressure sensors are low in sensitivity, slow in response and serious in temperature drift due to the fact that the elastic body material has high viscoelasticity and high Young modulus. Meanwhile, the currently used elastic materials generally have the problems of poor air permeability and the like, and the long-term contact on the surface of the skin has poor comfort and even causes skin inflammation.
In order to solve the above problems, some solutions have been proposed at present, for example, in patent CN106644189A, a microstructure pressure sensor is proposed to improve the sensitivity of a device, the preparation method of the microstructure pressure sensor includes closely arranging single-layer colloid microspheres on a substrate, depositing a PDMS material on the colloid microspheres, peeling off the PDMS layer after curing, dissolving the colloid microspheres with a solvent to obtain a flexible PDMS template having micro-nano cavities arranged periodically, pouring a mixed solution of carbon nanotubes and PDMS into the micro-nano cavities, forming a flexible conductive composite prefabricated film after curing, peeling off the flexible conductive composite film to obtain a flexible conductive composite film having a periodically arranged single-layer micro-hemisphere array formed on the surface, and manufacturing the flexible pressure sensor using two flexible conductive composite films. The method needs to prepare the colloidal microspheres and use the colloidal microspheres to manufacture the template, and then the template is used for manufacturing the flexible conductive composite film, so that the preparation process is complex.
In addition, patent CN 105758562a proposes that a femtosecond laser is used to obtain a silicon substrate with a microstructure in a chemical vapor deposition system, and then a reverse mold method is used to obtain a microstructure elastomer, so as to realize the preparation of a pressure sensor. The manufacturing cost of the sensor is high due to the fact that a vacuum environment cavity is needed in the preparation process.
Therefore, there is a need for a wearable pressure sensor and a method of manufacturing the same that is simple, efficient, low cost, and has superior performance.
Disclosure of Invention
The invention aims to provide a fabric-based wearable pressure sensor with simple and efficient manufacturing method, low cost and excellent performance and a manufacturing method thereof.
The manufacturing method of the wearable pressure sensor comprises the following steps:
step (1): pretreating a fabric substrate;
step (2): depositing the soot on the fabric substrate to form a top sensing layer electrode;
and (3): preparing a bottom electrode;
and (4): and assembling the top sensing layer electrode and the bottom electrode to form the fabric-based flexible pressure sensor.
The invention has the beneficial effects that: according to the manufacturing method of the fabric-based wearable pressure sensor, the pressure sensor can be manufactured in the atmospheric environment, the process is simple, the cost is low, a template is not needed, and the conductive composite film can be formed to be used as the pressure sensing layer by depositing the soot on the flexible fabric substrate. The adhesive strength is improved by the polymer adhesive. The fabric-based wearable pressure sensor with high sensitivity, high reliability and wider pressure detection range can be produced in batches.
The wearable pressure sensor has the advantages of simple structure, easy manufacture, low cost, good sensitivity and reliability and wider pressure detection range.
Drawings
Fig. 1 is a schematic diagram of an example of a wearable pressure sensor according to an embodiment of the present invention, 1 a soot loaded textile sensing layer, 2a textile substrate, 3 a bottom electrode.
Fig. 2 is a pressure detection range and sensitivity graph of the wearable pressure sensor according to the embodiment of the invention.
Fig. 3 is a graph of time-resistance response of a wearable pressure sensor of an embodiment of the present invention.
Fig. 4 is an application example of the wearable pressure sensor of the embodiment of the present invention.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
First, an example of a wearable pressure sensor according to an embodiment of the present invention will be described with reference to fig. 1. Fig. 1 is a schematic view of an example of a fabric-based wearable pressure sensor according to an embodiment of the present invention.
As shown in fig. 1, the wearable pressure sensor of the present invention comprises a bottom fabric electrode located below and a pressure sensing electrode 1 located above. The bottom fabric electrode comprises a flexible fabric substrate 2 and a bottom electrode 3.
The flexible fabric substrate fiber has flexibility and can deform even when subjected to extremely small pressure, and the sensitivity of the sensor can be ensured. The shape and size of the fabric base 2 in the sensor are not particularly limited and may be selected as needed, but the flexible substrate 2 is preferably formed in a long strip shape, and the thickness of the flexible fabric is preferably 1 to 2 mm. By setting the thickness of the flexible fabric within this range, the sensor can be easily deformed when subjected to an external force, the sensitivity of the sensor can be ensured, and the size of the sensor unit can be reduced. Miniaturization of the cell size facilitates the fabrication of the sensor array.
The bottom electrode 3 is a metal electrode such as a silver electrode, or a carbon electrode and a conductive polymer electrode. The electrodes are in the shape of interdigital electrodes.
The soot coated fabric acts as a pressure sensing electrode. The soot includes, but is not limited to, paraffin soot, kerosene soot, diesel soot, gasoline soot, and the like. The size of the soot particles is 20-100 nm. Soot can be formed by polymers such as PEDOT: PSS or polyvinyl alcohol and the like are well adhered to the surface of the fabric fiber to form the fabric with certain conductivity. The surface resistivity of the fabric coated with the soot is between 1M omega sq-1 and 1k omega sq-1.
Preparation method of wearable pressure sensor
In order to better explain the invention, the following further illustrate the main content of the invention in connection with specific examples, but the content of the invention is not limited to the following examples.
Example 1
The fabric substrate is cleaned by ethanol and deionized water. Then, after drying, the surface was activated by ozone plasma treatment for 10 seconds.
A kerosene lamp is selected as a soot source, and the non-woven fabric is placed above the flame to collect the soot released in the combustion process. The deposition amount of the smoke on the non-woven fabric can be controlled by adjusting different collection time. For example, in the present example, the collection time was controlled to be 300s, the deposition amount of soot on the nonwoven fabric was 6mg/cm2, PEDOT: PSS as a binder. And (3) mixing PEDOT: volume ratio of PSS aqueous solution to ethanol 1: 2 diluting, dripping the diluted solution on the surface of the smoke dust, and drying. The bottom electrode substrate also adopts non-woven fabrics, and the conductive electrode adopts a silver electrode. And printing silver paste on the surface of the non-woven fabric by a screen printing method, and drying. And bonding the sensing layer and the bottom electrode by using a 3M adhesive tape to assemble the sensor. The bottom electrode is connected with a test instrument, and the change of the current value can reflect the pressure of the induction layer.
Example 2
The fabric substrate is cleaned by propanol and deionized water. Then, after drying, the surface was activated by ozone plasma treatment for 20 seconds. A candle is selected as a soot source, and a woven fabric is placed above the flame to collect soot released in the combustion process. The deposition amount of the smoke on the non-woven fabric can be controlled by adjusting different collection time. For example, in the present example, the collection time was controlled to 100s, the deposition amount of soot on the nonwoven fabric was 3mg/cm2, PEDOT: PSS as a binder. And (3) mixing PEDOT: volume ratio of PSS aqueous solution to ethanol 1: 2 diluting, dripping the diluted solution on the surface of the smoke dust, and drying. The bottom electrode substrate is made of non-woven fabric, and the conductive electrode is made of carbon electrode. And printing the carbon paste on the surface of the non-woven fabric by a screen printing method, and drying. And (3) assembling the sensing layer and the bottom electrode into a sensor by using needle and thread sewing. The bottom electrode is connected with a test instrument, and the change of the current value can reflect the pressure of the induction layer.
Example 3
The fabric substrate is cleaned by isopropanol and deionized water. Then, after drying, the surface was activated by ozone plasma treatment for 30 seconds. Coal is selected as a soot source, and a woven fabric is placed above the flame to collect soot released in the combustion process. The deposition amount of the smoke on the non-woven fabric can be controlled by adjusting different collection time. For example, in the present example, the collection time was controlled to 500s, the deposition amount of soot on the nonwoven fabric was 7mg/cm2, and polyvinyl alcohol was used as a binder. And (3) dripping the aqueous solution of the polyvinyl alcohol on the surface of the smoke dust, and drying. The bottom electrode substrate is made of woven cloth, and the conductive electrode is made of a carbon electrode. And printing the carbon paste on the surface of the woven fabric by a screen printing method, and drying. And bonding the sensing layer and the bottom electrode by using a 3M adhesive tape to assemble the sensor. The bottom electrode is connected with a test instrument, and the change of the current value can reflect the pressure of the induction layer.
Example 4
The fabric substrate is cleaned by methanol and deionized water. Then, after drying, the surface was activated by ozone plasma treatment for 40 seconds. Polystyrene burning is selected as a soot source, and the woven fabric is placed above the flame to collect the soot released in the burning process. The deposition amount of the smoke on the non-woven fabric can be controlled by adjusting different collection time. For example, in the present example, the collection time was controlled to 200s, the deposition amount of soot on the nonwoven fabric was 5mg/cm2, PEDOT: PSS as a binder. And (3) mixing PEDOT: volume ratio of PSS aqueous solution to ethanol 1: 5, diluting, dripping the diluted solution on the surface of the smoke dust, and drying. The bottom electrode substrate is made of woven cloth, and the conductive electrode is made of a carbon electrode. And printing the carbon paste on the surface of the woven fabric by a screen printing method, and drying. And bonding the sensing layer and the bottom electrode by using a 3M adhesive tape to assemble the sensor. The bottom electrode is connected with a test instrument, and the change of the current value can reflect the pressure of the induction layer.
Example 5
The fabric substrate is cleaned by ethanol and deionized water. Then, after drying, the surface was activated by ozone plasma treatment for 40 seconds. Crop straw burning is selected as a soot source, and the woven fabric is placed above the flame to collect the soot released in the burning process. The deposition amount of the smoke on the non-woven fabric can be controlled by adjusting different collection time. For example, in this example, the collection time was controlled to 1000s, the amount of soot deposited on the nonwoven fabric was 6mg/cm2, and polyvinyl alcohol was used as the binder. And (3) dripping the aqueous solution of the polyvinyl alcohol on the surface of the smoke dust, and drying. The bottom electrode substrate is made of non-woven fabric, and the conductive electrode is made of a conductive polymer electrode. And printing the conductive polymer slurry on the surface of the non-woven fabric by a screen printing method, and drying. And bonding the sensing layer and the bottom electrode by using a 3M adhesive tape to assemble the sensor. The bottom electrode is connected with a test instrument, and the change of the current value can reflect the pressure of the induction layer.
Example 6
The fabric substrate is cleaned by ethanol and deionized water. Then, after drying, the surface was activated by ozone plasma treatment for 40 seconds. Waste paper is selected to be burnt as a soot source, and the non-woven fabric is placed above the flame to collect soot released in the burning process. The deposition amount of the smoke on the non-woven fabric can be controlled by adjusting different collection time. For example, in the present example, the collection time was controlled to 600s, the deposition amount of soot on the nonwoven fabric was 3mg/cm2, PEDOT: PSS as a binder. And (3) mixing PEDOT: volume ratio of PSS aqueous solution to ethanol 1: 5, diluting, dripping the diluted solution on the surface of the smoke dust, and drying. The bottom electrode substrate is made of non-woven fabric, and the conductive electrode is made of a silver electrode. And printing silver paste on the surface of the non-woven fabric by a screen printing method, and drying. And bonding the sensing layer and the bottom electrode by using a 3M adhesive tape to assemble the sensor. The bottom electrode is connected with a test instrument, and the change of the current value can reflect the pressure of the induction layer.
As shown in fig. 2, which shows the sensitivity and detection range curves of the prepared fabric-based pressure sensor device. The devices have high sensitivity in the range of 100KPa, wherein the detection sensitivity is as high as 81.61 kPa-1.
As shown in fig. 3, which shows the response curve of the prepared sensor after cyclic compression, the result shows that the device has good stability.
As shown in fig. 4, which shows an application example of the prepared sensor, the prepared pressure sensor can be used for testing human body pulse and has good resolution on the characteristic peak of pulse beat. The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A method of manufacturing a wearable pressure sensor, comprising the steps of:
step (1): pretreating a fabric substrate;
step (2): attaching the burning pollutant soot to the fabric substrate by a fumigation method;
and (3): printing a bottom fabric electrode by a screen printing method;
and (4): and laminating, assembling and fixing the soot attachment fabric and the bottom fabric electrode to obtain the full-fabric wearable flexible pressure sensor.
2. The method of claim 1, wherein in step (1), the fabric substrate is sequentially washed with an alcohol solvent and deionized water. Then drying, and then sequentially treating with ozone and plasma to activate the surface.
3. The method of claim 2, wherein the alcohol solvent used includes, but is not limited to, ethanol, isobutanol, and the like.
4. The method of claim 1, wherein in step (2), the mat is placed over a combustion flame to fumigate, the fumes are collected directly on the mat substrate, and the soot is then bonded to the mat substrate with an adhesive.
5. The method of claim 4, wherein the burning flame comprises candles, kerosene, diesel, coal, combustible polymers, and the like.
6. The method of claim 4, wherein the adhesive selected comprises PEDOT: PSS, polyvinyl alcohol, polyethylene oxide, polyacrylic acid, polyacrylamide, and the like.
7. The manufacturing method according to claim 1, wherein in the step (3), the base fabric conductive electrode is prepared by a screen printing method.
8. The method of claim 7, wherein the conductive electrode comprises a silver paste electrode, a silver nanowire electrode, a carbon electrode, a conductive polymer electrode, or the like.
9. The method of claim 7, wherein the electrode shapes of the conductive electrodes include parallel electrodes, interdigitated electrodes, and electrode arrays.
10. The manufacturing method according to claim 1, wherein in the step (4), the soot-attached fabric and the bottom fabric electrode are laminated, assembled and fixed by selected fixing methods including tape adhesion, needle and thread sewing and the like, so as to obtain the full-fabric wearable flexible pressure sensor.
11. A wearable pressure sensor obtained by the method of any of claims 1-10, comprising a top fabric electrode and a bottom fabric electrode, wherein the top electrode is a soot coated fabric electrode and the bottom electrode is a screen printed conductive fabric electrode. The top and bottom electrodes have a gaussian distribution of surface height due to the multilevel structure of the fiber structure. The top electrode and the bottom electrode are laminated in such a manner that the microstructures face each other.
12. The wearable pressure sensor of claim 11, wherein the fabric flexible substrate is a cotton fabric, a polyester fabric, a nylon fabric, or an acrylic fabric.
13. The wearable pressure sensor of claim 12, wherein the woven fabric is in the form of a non-woven or woven structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010237958.8A CN111562039A (en) | 2020-03-30 | 2020-03-30 | Textile material-based wearable pressure sensor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010237958.8A CN111562039A (en) | 2020-03-30 | 2020-03-30 | Textile material-based wearable pressure sensor and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111562039A true CN111562039A (en) | 2020-08-21 |
Family
ID=72071532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010237958.8A Pending CN111562039A (en) | 2020-03-30 | 2020-03-30 | Textile material-based wearable pressure sensor and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111562039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041008A (en) * | 2021-03-09 | 2021-06-29 | 电子科技大学 | Wearable thermal therapy electronic device and array preparation method thereof |
| CN113790832A (en) * | 2021-09-14 | 2021-12-14 | 天津工业大学 | Intelligent pulse monitoring wrist patch based on flexible pressure sensor and manufacturing method thereof |
-
2020
- 2020-03-30 CN CN202010237958.8A patent/CN111562039A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113041008A (en) * | 2021-03-09 | 2021-06-29 | 电子科技大学 | Wearable thermal therapy electronic device and array preparation method thereof |
| CN113790832A (en) * | 2021-09-14 | 2021-12-14 | 天津工业大学 | Intelligent pulse monitoring wrist patch based on flexible pressure sensor and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lou et al. | Recent progress of self‐powered sensing systems for wearable electronics | |
| Yue et al. | Spider‐web and ant‐tentacle doubly bio‐inspired multifunctional self‐powered electronic skin with hierarchical nanostructure | |
| Jin et al. | Ultrathin nanofibrous membranes containing insulating microbeads for highly sensitive flexible pressure sensors | |
| CN106580256B (en) | A kind of pliable pressure sensor and preparation method thereof | |
| WO2019144931A1 (en) | Moisture power generator and preparation method therefor | |
| CN109137105B (en) | Flexible stretchable multifunctional sensor based on graphene nanofiber yarn and preparation method thereof | |
| CN110207866A (en) | A kind of highly sensitive pliable pressure sensor and preparation method thereof based on modified paper base | |
| CN111562039A (en) | Textile material-based wearable pressure sensor and manufacturing method thereof | |
| Li et al. | The rising of fiber constructed piezo/triboelectric nanogenerators: from material selections, fabrication techniques to emerging applications | |
| CN101907593A (en) | Polypyrrole/polyvinylidene fluoride nano fiber composite resistance type film gas-sensitive element and manufacturing method thereof | |
| CN112697317A (en) | Flexible pressure sensor with high sensitivity and wide range and preparation method thereof | |
| CN111537114A (en) | Full nanofiber electronic skin and application device thereof | |
| CN114190923B (en) | Bio-based all-fiber self-powered multifunctional electronic skin and preparation method thereof | |
| CN109724723A (en) | Wearable pressure sensor of textile material base and preparation method thereof | |
| CN209280176U (en) | A kind of color-changing flexible electronic skin | |
| CN112179530B (en) | Flexible pressure sensor based on double-sided microstructure electrode and paper and preparation method | |
| CN113280838A (en) | Full-fiber-based self-powered sensor | |
| CN109724724A (en) | Pressure distributed flexible sensor and preparation method thereof | |
| Tang et al. | Re-stickable all-solid-state supercapacitor supported by cohesive thermoplastic for textile electronics | |
| CN113787800B (en) | Preparation method of hydrogel flexible strain sensor with resistance-capacitance dual modes and sensor | |
| CN113295085A (en) | Wearable non-woven fabric sensor based on three-dimensional conductive network and preparation method thereof | |
| CN114323365A (en) | Static and dynamic three-dimensional micro-crack expansion sensor, and preparation method and equipment thereof | |
| CN113447172A (en) | Wearable pressure sensor based on natural veins and manufacturing method | |
| CN114993527B (en) | Flexible resistance type pressure sensor based on carbonized electrostatic spinning fibers and preparation | |
| CN111041708A (en) | Composite membrane, preparation method thereof and pressure sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200821 |
|
| WD01 | Invention patent application deemed withdrawn after publication |