CN114234790A - Self-powered flexible wearable device for real-time monitoring - Google Patents
Self-powered flexible wearable device for real-time monitoring Download PDFInfo
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/242—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by carrying output of an electrodynamic device, e.g. a tachodynamo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
Abstract
The invention discloses a self-powered flexible wearable device for real-time monitoring, which sequentially comprises a nano generator device, a first transparent elastic conductive film, an elastic electrochromic layer, an elastic electrolyte layer and a second transparent elastic conductive film, wherein the nano generator device is respectively connected with the first transparent elastic conductive film and the second transparent elastic conductive film through a transparent elastic conductive fiber. The nanometer generator device utilizes the motion attribute of the human body, generates charge accumulation by friction power generation in the process of occurrence of physical deformation, simultaneously provides voltage for the electrochromic device, leads the sensor to change color, can realize the marking of different driving voltages through the difference of the strength of color change, and further realizes the collection of body function information in the motion process; the technology is worn intelligently, and a large amount of data acquisition of athletes can be realized in the field of bionic clothing. The invention utilizes the self-powered system to realize the work without an external power supply, saves energy and has no pollution.
Description
Technical Field
The invention relates to a preparation method of a self-powered flexible wearable device, and belongs to the technical field of transparent conduction and piezoelectric sensing.
Background
In recent years, wearable electronic equipment which integrates technologies such as communication, sensing, intelligent interaction and the like is developed rapidly, and plays an important role in aspects such as military fire control, medical health, leisure and entertainment and the like. However, button cells or rigid lithium ion batteries are generally adopted in the market at present as power supply devices of wearable electronic equipment, and the batteries have the disadvantages of large environmental pollution and poor flexibility, so that the application positions of the wearable equipment are limited to a great extent. Meanwhile, with the development of electronic devices in the direction of lightness and thinness and the demand of intelligent wearable conductive materials, the traditional rigid electronic devices are increasingly unable to meet the needs of modern electronic industries, and the conductive films are more widely applied in the market due to the lightness and thinness. However, the current conductive film is generally prepared on substrates such as glass, ceramics, PET and the like, and the substrates have the defects of brittle quality, poor elasticity, difficult deformation and the like, so that the prepared conductive film has low transparency, poor flexibility, poor bending compression resistance and poor wearability, and the preparation process is complex because the conductive film is mostly prepared by adopting conductive fillers or coating and the like, thereby greatly limiting the application of the conductive film. Therefore, the development of a wearable conductive film material which has elasticity, flexibility, can bear bending deformation and has high transparency is urgently needed.
The human body is used as an important energy source and can generate energy all the time. Research shows that if the heat energy and the mechanical energy generated when the relevant parts of the human body such as typing, walking, jogging and the like move and the energy irradiated by sunlight on the human body are collected to supply power to the electronic equipment, the energy consumption requirement of most commercial wearable electronic equipment at present can be met, and the dependence on an external battery is eliminated. Therefore, the development of green and efficient flexible portable energy materials and devices has important application value.
Chinese patent CN 103165225B discloses a method for preparing a transparent conductive film, which comprises the following steps: a cured resin layer is formed on one side of a transparent conductive film substrate, and an indium composite oxide layer is formed on the opposite side of the cured resin layer from the film substrate. The cured resin layer has a plurality of spherical particles and a binder resin layer for fixing the spherical particles to the surface of the film substrate. The thickness of the film substrate is 10 to 200 mu m, and the thickness of the indium composite oxide layer is 20 to 50 nm. When the most frequent particle diameter of the spherical particles is w and the thickness of the adhesive resin layer is d, w-d, which is the difference between the most frequent particle diameter w and the thickness d of the adhesive resin layer, is greater than 0 and not more than 1.2 μm in the cured resin layer. The transparent conductive film disclosed by the invention is small in haze and excellent in quality, but the obtained conductive film is poor in flexibility and unsatisfactory in folding resistance. Chinese patent CN 105869720B discloses an elastic conductive film material and a preparation method thereof. The method comprises the following steps: selecting an elastic film as an elastic attachment matrix, applying a certain tensile force to two ends of the elastic film, stretching the elastic film to a certain elongation rate, fixing the elastic film, and coating a layer of liquid elastic adhesive on the surface of the elastic film to form an adhesive layer; pressing the flexible nano conductive film on the adhesive layer; coating a layer of resin with a protection effect on the upper side of the flexible nano conductive film, and curing the adhesive and the resin; and releasing the tensile force applied on the elastic attachment matrix to drive the flexible nano conductive film to retract, thus obtaining the elastic conductive film material. The conductive film material prepared by the invention has the characteristics of certain elasticity, good flexibility, stable electrical property and the like, and the carbon nanotube film is protected by adopting a resin coating mode, so that the carbon nanotube film is not easy to wear and leak electricity, and the electrical safety and durability of the material are improved. However, the conductive materials described herein do not have transparent conductive characteristics, which greatly limits the field of application.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the self-powered flexible wearable device is more visual and can be monitored in real time.
In order to solve the technical problem, the invention provides a self-powered flexible wearable device for real-time monitoring, which sequentially comprises a nano generator device, a first transparent elastic conductive film, an elastic electrochromic layer, an elastic electrolyte layer and a second transparent elastic conductive film, wherein the nano generator device is respectively connected with the first transparent elastic conductive film and the second transparent elastic conductive film through a transparent elastic conductive fiber.
Preferably, the first transparent elastic conductive film and the second transparent elastic conductive film are both gel systems, and the preparation method comprises the following steps: adding a conductive matrix material into a solvent, stirring and dissolving at room temperature to form a conductive solution with the mass concentration of 30-50%, then sequentially adding 10-15% of a high-molecular polymer conductive carrier, 0.005-0.01% of a vinyl monomer crosslinking agent, 0.02-0.04% of an ammonium persulfate catalyst and 0.001-0.002% of a crosslinking initiator by mass percent, stirring and dissolving, and then placing in an ultrasonic oscillator for dispersing for 30-60min to obtain a reaction precursor; adding a reaction precursor into an electrostatic spinning cavity, taking PMMA as a film-forming carrier, forming an elastic conductive film on the surface of the carrier through high-voltage polarization, then placing the elastic conductive film in a vacuum film pressing machine, adjusting the pressure to be 5-10 MPa, and keeping for 3-5 min to obtain the transparent elastic conductive film.
More preferably, the conductive matrix material is lithium salt, and the lithium salt is lithium 6 isotope compound, so as to keep the physical property of the transparent elastic conductive film unchanged at-40 to 80 ℃, and realize the control of the conductive property of the conductive material by adjusting the addition proportion; the solvent is an aqueous solvent or an organic solvent, and different solvents are selected to realize the preparation of the conductive materials of different systems; the high molecular polymer conductive carrier is any one or more of acrylamide, polyacrylamide, polyvinyl alcohol and polyvinylidene fluoride; the vinyl monomer cross-linking agent is any one or more of acrylic acid, methacrylic acid, divinyl benzene and N, N-methylene bisacrylamide; the crosslinking initiator is one or more of tetramethylethylenediamine, methyl benzoylformate and benzophenone, and can realize rapid warm curing and ultraviolet curing.
Further, the conductive matrix material is any one or more of lithium chloride, lithium perchlorate and lithium carbonate; the aqueous solvent is deionized water solution, and the organic solvent is polycarbonate solution.
More preferably, the transparent elastic conductive film has a surface resistance value of 100 Ω/m2The following.
Preferably, the transparent elastic conductive fiber comprises conductive fiber arranged in a polyvinylidene fluoride sleeve, the transparent elastic conductive fiber is prepared into a fiber sleeve structure by adopting a double-screw extrusion process, taking the conductive fiber as a carrier and coating a layer of polyvinylidene fluoride on the surface of the carrier through adjusting a mould; the nano generator device is formed by weaving the transparent elastic conductive fibers, and the required shape and size of the device can be prepared by weaving.
More preferably, the maximum output voltage, the maximum current and the maximum power of the nano-generator device reach 500V, 12 muA and 0.31mW/cm respectively2。
Preferably, the elastic electrochromic layer is prepared by coating an electrochromic material (suitable for the existing electrochromic material) on the surface of the first transparent elastic conductive film through a printing or spraying process, then drying the film in an oven at 115 ℃ for 15-30 minutes, and storing the film in a constant temperature and humidity environment, wherein the temperature is controlled to be 10-15 ℃, and the humidity is controlled to be lower than 30%.
Preferably, the elastic electrolyte layer is prepared by taking any one or more of polyurethane TPU, PVB, PVDF and EVA as an electrolyte carrier and one or more of lithium perchlorate, lithium hexafluorophosphate and lithium chloride as a conductive material through a twin-screw tape casting process.
Preferably, the nanogenerator device collects the action energy of a human body, utilizes active motion sensing to generate voltage, the voltage is transmitted to the first transparent elastic conductive film and the second transparent elastic conductive film through the transparent elastic conductive fibers, then the elastic electrochromic layer is excited to generate signals, and the signals in the motion process are monitored through detecting the strength of the signals.
The elastic electrochromic layer, the elastic electrolyte layer and the two layers of transparent elastic conductive films are combined to prepare an elastic electrochromic device; the device with the same size and specification is prepared from a nano generator device through a weaving process, and is combined into a self-powered color-changing device by connecting transparent elastic conductive fibers and two layers of transparent elastic conductive films in parallel, the nano generator device utilizes the motion attribute of a human body, generates charge accumulation through friction power generation in the process of occurrence of shape change and provides voltage for an electrochromic device at the same time, so that the sensor changes color, and the marks of different driving voltages can be realized through the difference of color change strength, thereby realizing the collection of body function information in the motion process; the technology is worn intelligently, and a large amount of data acquisition of athletes can be realized in the field of bionic clothing.
Compared with the prior art, the invention has the beneficial effects that:
1) the self-powered flexible wearable device for real-time monitoring has the advantages of simple synthesis process, easiness in process control, suitability for mass production, cost reduction and convenience in use.
2) The self-powered flexible wearable device for real-time monitoring provided by the invention can work without an external power supply by utilizing a self-powered system, and is energy-saving and pollution-free.
3) The invention can prepare transparent elastic conductive fiber and film in batch, has wide application prospect in the field of transparent circuit, has application prospect in the field of low-temperature superconduction, can prepare transparent elastic circuit by using ink-jet printing and 3D printing modes, can be widely used in the fields of transparent display, touch screen and the like, and has larger application prospect in the fields of solar cell and flexible cell.
Drawings
Fig. 1 is a schematic diagram of a self-powered flexible wearable device for real-time monitoring provided by the present invention;
fig. 2 is a schematic view of a transparent elastic conductive fiber.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1-2, the self-powered flexible wearable device for real-time monitoring provided by the present invention sequentially includes a nanogenerator device 4, a first transparent elastic conductive film 5, an elastic electrochromic layer 6, an elastic electrolyte layer 7, and a second transparent elastic conductive film 8, wherein the nanogenerator device 4 is connected to the first transparent elastic conductive film 5 and the second transparent elastic conductive film 8 through a transparent elastic conductive fiber 3, respectively.
The first transparent elastic conductive film 5 and the second transparent elastic conductive film 8 are both gel systems, and the preparation method comprises the following steps:
1. elastic electrochromic device preparation
Putting the purchased lithium perchlorate and resin powder into a vacuum oven at 100 ℃ for drying for 24 hours for later use
Weighing 1.54g of lithium perchlorate, placing the lithium perchlorate in a beaker, then weighing 10mL of polycarbonate, adding the polycarbonate into the beaker, stirring and dissolving the polycarbonate at room temperature, and placing the beaker in a vacuum drying oven for storage for later use after the dissolution is finished. Weighing 5.50g of dried PVB resin powder, placing the powder in a 500mL beaker, and then adding 1.25g of prepared electrolyte solution; completely dissolving, and sealing for storage; adding the prepared material into a double-screw casting device, setting the temperature to be 150 ℃, and preparing the elastic electrolyte layer by a casting process.
3.39g of lithium chloride, 1.45g of AAM, and 0.84g of MBAA were weighed in sequence into a beaker, and 10mL of deionized water was added. Stirring for dissolving, adding 2.34mg AP, transferring to a deep color beaker, continuously and rapidly stirring, finally adding 3.52mg TEMED, continuously dispersing uniformly, and storing in dark place; adding the prepared conductive substance into an electrostatic spinning cavity, taking PMMA as a film forming carrier, forming an elastic conductive film on the surface of the carrier through high-voltage polarization, then placing the film in a vacuum film pressing machine, adjusting the pressure to be 8MPa, and keeping for 5min to obtain the transparent elastic conductive film, wherein the surface resistance value is 100 omega/m2The following.
Uniformly coating a layer of PEDOOT electrochromic slurry on the surface of the elastic conductive film by screen printing, drying in an oven at 115 ℃ for 30 minutes, storing in a constant temperature and humidity environment, controlling the temperature to be 10-15 ℃ and controlling the humidity to be lower than 30%.
And finally, sealing the elastic stretchable electrochromic device at high temperature and high pressure by using a vacuum automatic laminating machine, placing the elastic stretchable electrochromic device in a vacuum oven, keeping the vacuum oven at constant temperature of 120 ℃ for 1-2 hours in vacuum, and cooling the elastic stretchable electrochromic device to room temperature to obtain the elastic stretchable electrochromic device.
And (3) performance testing:
the thickness of the device is 0.25 mm, and the size is 3.4 cm2(ii) a Connecting a direct current power supply, adjusting the positive and negative electrodes to achieve color-changing efficiency of 5 s at 3V and color-changing efficiency of 3 s at 3V, transmittance of 95% and coloring efficiency of 120cm2and/C, tensile deformation amount is 300%.
As shown in fig. 2, the transparent elastic conductive fibers 3 include conductive fibers 1 arranged in a polyvinylidene fluoride sleeve 2, the transparent elastic conductive fibers 3 are prepared into a fiber sleeve structure by adopting a twin-screw extrusion process, taking the conductive fibers 1 as a carrier and coating a layer of polyvinylidene fluoride on the surface of the carrier through adjusting a mold; the nano-generator device 4 is woven from the transparent elastic conductive fibers 3. The highest output voltage, the highest current and the highest power of the nano generator device 4 respectively reach 500V, 12 muA and 0.31mW/cm2(ii) a The preparation method comprises the following steps:
2. preparation of nano-generator
Weighing 34.529g of lithium chloride, placing the lithium chloride in a beaker, adding 100mL of deionized water, stirring uniformly at room temperature, weighing 12.245g of high-molecular conductive carrier acrylamide, placing the acrylamide in the solution, continuously stirring, sequentially adding 0.01g of methacrylic acid crosslinking agent, 0.03g of ammonium persulfate catalyst and 0.001g of tetramethylethylenediamine crosslinking initiator after dissolution is finished, stirring and dissolving, and placing the mixture in an ultrasonic oscillator for dispersing for 30-60 min; and obtaining the transparent conductive solution after the reaction is finished.
Adding the transparent conductive solution into a 1-level feed opening of an extruder, simultaneously adding elastic polymer PVDF into a 2-level feed opening to serve as a protective sleeve, setting the temperature of a machine head to be 80 ℃, setting the extrusion speed to be 10m/min after constant temperature, and preparing the transparent elastic conductive fibers in batches.
By means of a braiding device, the braided device has a thickness of 0.15 mm and a size of 3.4 cm2The nanometer generator is connected with the elastic electrochromic device through the transparent conductive fibers, the flexible wearable device for power supply is prepared, the wearable device can be directly adhered to a wrist, the nanometer generator is excited to generate an electric signal through elastic deformation generated in the motion process, and then the electrochromic device is driven to generate signal change.
The nano generator device 4 collects the action energy of a human body, utilizes active motion sensing to generate voltage, the voltage is transmitted to the first transparent elastic conductive film 5 and the second transparent elastic conductive film 8 through the transparent elastic conductive fibers 3, then the elastic electrochromic layer 6 is excited to generate signals, and the signals in the motion process are monitored through detecting the strength of the signals.
The elastic electrochromic layer 6 and two layers of transparent elastic conductive films are combined to prepare an elastic electroluminescent device; the nano generator device 4 (piezoelectric-friction composite nano generator) is prepared into devices with the same size and specification through a weaving process, the two devices are combined into a self-powered color changing device in parallel through the transparent elastic conductive fibers 3, the nano generator device 4 generates charge accumulation through friction power generation in the process of occurrence of physical changes by utilizing the motion attribute of a human body, and simultaneously provides voltage for the elastic electroluminescent device to change the color of the elastic electroluminescent device, and the marking of different driving voltages can be realized through the difference of the strength of the color change, so that the collection of body function information in the motion process is realized; the technology is worn intelligently, and a large amount of data acquisition of athletes can be realized in the field of bionic clothing.
The diameter of the transparent elastic conductive fiber 3 can be controlled to be 0.1-2mm, the elastic deformation reaches 200%, and the transparent elastic conductive fiber has a good application prospect in the fields of intelligent wearing, bionics and artificial nerves; the transparent elastic conductive film can be controlled to be 0.05-0.5mm in thickness, the transmittance can reach more than 85%, the physical performance of the device can be kept unchanged at minus 40-80 ℃ by adding a lithium 6 isotope compound, the transparent elastic conductive film can be applied to the superconducting field under the condition, a transparent elastic circuit can be prepared by utilizing ink-jet printing and 3D printing modes, and the transparent elastic conductive film can be widely applied to the fields of low-temperature transparent display, touch screens and the like and also applied to the fields of solar cells and flexible cells; the diameter of the nano generator device 4 can be controlled to be 0.15-3mm, and the fiber is subjected to built-in wave design, so that the whole fiber has ultrahigh stretchability (strain of 300%) and working strain of 100%; by controlling the fibers to make effective contact with the stretchable sheath fiber tube, the device has high sensitivity not only in tension but also in compression and bending.
Claims (10)
1. The utility model provides a flexible wearable device of self-power for real-time supervision which characterized in that includes nanometer generator device (4), first transparent elasticity conductive film (5), elasticity electrochromic layer (6), elastic electrolyte layer (7), second transparent elasticity conductive film (8) in proper order, and first transparent elasticity conductive film (5), second transparent elasticity conductive film (8) are connected through a transparent elasticity conductive fiber (3) respectively in nanometer generator device (4).
2. The self-powered flexible wearable device for real-time monitoring according to claim 1, wherein the first transparent elastic conductive film (5) and the second transparent elastic conductive film (8) are both gel systems and are prepared by: adding a conductive matrix material into a solvent, stirring and dissolving at room temperature to form a conductive solution with the mass concentration of 30-50%, then sequentially adding 10-15% of a high-molecular polymer conductive carrier, 0.005-0.01% of a vinyl monomer crosslinking agent, 0.02-0.04% of an ammonium persulfate catalyst and 0.001-0.002% of a crosslinking initiator by mass percent, stirring and dissolving, and then placing in an ultrasonic oscillator for dispersing for 30-60min to obtain a reaction precursor; adding a reaction precursor into an electrostatic spinning cavity, taking PMMA as a film-forming carrier, forming an elastic conductive film on the surface of the carrier through high-voltage polarization, then placing the elastic conductive film in a vacuum film pressing machine, adjusting the pressure to be 5-10 MPa, and keeping for 3-5 min to obtain the transparent elastic conductive film.
3. The self-powered flexible wearable device for real-time monitoring of claim 2, wherein said conductive matrix material is a lithium salt, said lithium salt being a lithium 6 isotopic compound; the solvent is an aqueous solvent or an organic solvent; the high molecular polymer conductive carrier is any one or more of acrylamide, polyacrylamide, polyvinyl alcohol and polyvinylidene fluoride; the vinyl monomer cross-linking agent is any one or more of acrylic acid, methacrylic acid, divinyl benzene and N, N-methylene bisacrylamide; the crosslinking initiator is any one or more of tetramethyl ethylene diamine, methyl benzoylformate and benzophenone.
4. A self-powered flexible wearable device for real-time monitoring as claimed in claim 3, wherein said conductive matrix material is any one or more of lithium chloride, lithium perchlorate, lithium carbonate; the aqueous solvent is deionized water solution, and the organic solvent is polycarbonate solution.
5. The self-powered flexible wearable device for real-time monitoring of claim 2, wherein the transparent elastic conductive film has a surface resistance value of 100 Ω/m2The following.
6. The self-powered flexible wearable device for real-time monitoring as claimed in claim 1, wherein the transparent elastic conductive fiber (3) comprises a conductive fiber (1) arranged in a polyvinylidene fluoride casing (2), the transparent elastic conductive fiber (3) is prepared into a fiber casing structure by adopting a twin-screw extrusion process, taking the conductive fiber (1) as a carrier, and coating a layer of polyvinylidene fluoride on the surface of the carrier through adjusting a mold; the nanometer generator device (4) is formed by weaving the transparent elastic conductive fibers (3).
7. Self-powered flexible wearable device for real-time monitoring according to claim 6, characterized in that the nanogenerator device (4) has a maximum output voltage, a maximum current and a maximum power of up to 500V, 12 μ A and 0.31mW/cm, respectively2。
8. The self-powered flexible wearable device for real-time monitoring according to claim 1, wherein the elastic electrochromic layer (6) is prepared by coating an electrochromic material on the surface of the first transparent elastic conductive film (5) through a printing or spraying process, then drying the film in an oven at 115 ℃ for 15-30 minutes, and storing the film in a constant temperature and humidity with the temperature controlled at 10-15 ℃ and the humidity controlled at less than 30%.
9. The self-powered flexible wearable device for real-time monitoring as claimed in claim 1, wherein the elastic electrolyte layer (7) is prepared by a twin-screw casting process using any one or more of polyurethane TPU, PVB, PVDF and EVA as an electrolyte carrier and one or more of lithium perchlorate, lithium hexafluorophosphate and lithium chloride as a conductive material.
10. Self-powered flexible wearable device for real-time monitoring according to any of the claims 1-9, characterized in that the nanogenerator device (4) generates a voltage by active motion sensing through the collection of human body motion energy, the voltage is transmitted to the first transparent elastic conductive film (5), the second transparent elastic conductive film (8) through the transparent elastic conductive fiber (3), then the elastic electrochromic layer (6) is activated to generate a signal, and the signal during the motion is monitored by detecting the intensity of the signal.
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| CN1515949A (en) * | 1996-10-01 | 2004-07-28 | ˹̹����˹Ibl����˾ | Device and method for assembling electrochromism unit |
| CN108931873A (en) * | 2018-08-21 | 2018-12-04 | 上海洞舟实业有限公司 | A kind of preparation of high-transparency flexibility electrochomeric films |
| CN211786514U (en) * | 2019-10-31 | 2020-10-27 | 青岛九维华盾科技研究院有限公司 | Elastic electrochromic module with stretching function |
| CN113724919A (en) * | 2021-08-24 | 2021-11-30 | 上海科润光电技术有限公司 | Self-luminous flexible wearable device for real-time monitoring |
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- 2021-12-09 CN CN202111499709.7A patent/CN114234790A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515949A (en) * | 1996-10-01 | 2004-07-28 | ˹̹����˹Ibl����˾ | Device and method for assembling electrochromism unit |
| CN108931873A (en) * | 2018-08-21 | 2018-12-04 | 上海洞舟实业有限公司 | A kind of preparation of high-transparency flexibility electrochomeric films |
| CN211786514U (en) * | 2019-10-31 | 2020-10-27 | 青岛九维华盾科技研究院有限公司 | Elastic electrochromic module with stretching function |
| CN113724919A (en) * | 2021-08-24 | 2021-11-30 | 上海科润光电技术有限公司 | Self-luminous flexible wearable device for real-time monitoring |
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