CN115265878A - Bionic touch sensor based on friction nano generator - Google Patents
Bionic touch sensor based on friction nano generator Download PDFInfo
- Publication number
- CN115265878A CN115265878A CN202210923853.7A CN202210923853A CN115265878A CN 115265878 A CN115265878 A CN 115265878A CN 202210923853 A CN202210923853 A CN 202210923853A CN 115265878 A CN115265878 A CN 115265878A
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- Prior art keywords
- elastic
- front cover
- air holes
- sealing
- rear cover
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 32
- 230000009471 action Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 230000008447 perception Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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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
Abstract
The invention provides a bionic touch sensor based on a friction nano generator, which relates to the technical field of friction nano touch sensing and mainly comprises an elastic convex sealing front cover, an aluminum film with air holes, a conductive ink printing electrode FEP film and an elastic sealing rear cover; the elastic convex sealing front cover and the elastic sealing rear cover jointly form a sealing environment, the aluminum die and the FEP film are sealed, and an air chamber is formed at the inner side of the convex part of the elastic convex front cover; the FEP film is fixed on the inner side of the elastic sealing rear cover, and conductive ink is printed on the back of the FEP film and can move along with the elastic rear cover; the aluminum die is fixed on the inner side of the elastic bulge-mounted sealing front cover, and air holes are distributed on the inner side of the elastic bulge-mounted sealing front cover. The invention has reasonable structure and stable electric signal, can continuously sense the outside and has important significance for stably sensing the outside.
Description
Technical Field
The invention relates to the technical field of friction nanometer power generation, in particular to a bionic touch sensor based on a friction nanometer power generator.
Background
The touch sensing plays an important role in human life, has an important role for a robot, and has unique advantages in noisy and dark environments and environments with optical and acoustic sensors affected by some influences.
At present, the mainstream touch sensor mainly comprises a piezoelectric sensor and a piezoresistive sensor, wherein the piezoresistive sensor generates signals by depending on resistance change and needs to consume electric energy; the voltage generated by the piezoelectric sensor is low, and subsequent signal processing is not very convenient.
Disclosure of Invention
In view of the above, the invention provides a bionic touch sensor based on a friction nano generator, wherein the touch sensor of the friction nano generator can be self-powered without extra consumption of electric energy; and the voltage generated by the triboelectricity is higher, and the subsequent signal processing is easier.
Therefore, the technical scheme adopted by the invention is as follows:
the invention provides a bionic touch sensor based on a friction nano generator, which comprises an elastic convex sealing front cover, an aluminum film with air holes, a conductive ink printing electrode FEP film and an elastic sealing rear cover, wherein the elastic convex sealing front cover is provided with a plurality of air holes;
the elastic convex sealing front cover and the elastic sealing rear cover jointly form a sealing environment, the aluminum film with the air holes and the FEP film are sealed, and the elastic convex front cover forms an air chamber at the inner side of the convex part of the elastic convex front cover; the FEP film is fixed on the inner side of the elastic sealing rear cover, and conductive ink is printed on the back of the FEP film and can move along with the elastic rear cover; the aluminum film with the air holes is fixed on the side of the elastic convex sealing front cover and is distributed with the air holes.
Furthermore, the aluminum film with the air holes is provided with a fixing part, the elastic convex sealing front cover is provided with a fixing groove, and the aluminum film with the air holes is placed into the fixing groove of the elastic convex sealing front cover through the fixing part to achieve the fixing effect.
Furthermore, the elastic convex sealing front cover is provided with a limiting edge for limiting the change amplitude of the volume of the air chamber.
Further, the elastic sealing rear cover is made of soft silicone.
Further, the elastic convex sealing front cover is made of hard silica gel.
Further, the volume of the air chamber is reduced under the action of external force, gas in the air chamber flows out of the air chamber through the air holes of the aluminum film with the air holes, the elastic sealing rear cover is expanded, meanwhile, the FEP film moves along with the rear cover and is separated from the aluminum film with the air holes, and induced charges are generated at the same time to generate electric signals;
when the external force disappears, the volume of the air chamber is restored due to the elastic force, the air returns to the air chamber through the air holes under the action of pressure, and the FEP film is restored to the original position and is in contact with the aluminum film with the air holes.
The invention has the beneficial effects that:
(1) The friction nano generator has the advantages of low cost and high sensitivity based on contact electrification of the friction nano generator. Meanwhile, the principle of causing contact separation is to utilize pressure difference, so that a small contact has pressure difference to generate contact separation, and finally, a signal is generated. Therefore, the touch sensor has sensitive perception to external changes, greatly improves perception capability by directly contacting with a perception body, and has the advantages of small volume and low cost.
(2) The shape and the size of the touch sensor do not influence the contact and separation process, so that the shape and the size of the touch sensor can be changed, and meanwhile, a plurality of touch sensors can be simply integrated together, can be placed in different sensing scenes, and can be arrayed to improve the sensing capability.
(3) The main body structure of the bionic touch sensor is a sealed environment formed by the elastic convex sealed front cover and the elastic sealed rear cover, so that the bionic touch sensor has waterproof and moistureproof capabilities and has the potential of underwater work.
(4) The touch sensor is based on the contact electrification of the nano generator, but compared with other sensors based on the nano generator, the touch sensor generates an electric signal by generating mechanical change, is inspired by the bulging action of two cheeks of a frog, simulates the two cheeks of the bulging of the frog, and generates the change of a contact area by utilizing the change of pressure difference caused by the volume change, thereby generating the electric signal. Therefore, the signal of the invention has certain continuity, is convenient to detect, has high sensitivity to pressure, and can sense not only the contact but also the degree of the contact.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of a bionic touch sensor based on a friction nano-generator according to an embodiment of the present invention;
FIG. 2 is an exploded view of a bionic touch sensor based on a friction nano-generator according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the operation of a bionic touch sensor based on a friction nano-generator according to an embodiment of the present invention;
in the figure, 1, a rear cover is elastically sealed; 2. an FEP film; 3. a vent hole; 4. aluminum film; 5. an air chamber; 6. an elastic bulge-shaped sealing front cover; 7. a limiting edge; 8. fixing grooves; 9. fixing edges; 10. and (3) conductive ink.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1-2, the bionic tactile sensor based on a friction nano generator provided in the embodiment of the present invention is inspired by the bulging action of two cheeks of a frog, and simulates the bulging two cheeks of the frog. The method mainly comprises the following steps: an elastic convex sealing front cover 6, an aluminum film 4 with air holes, a conductive ink printing electrode FEP film 2 and an elastic sealing rear cover 1; the elastic convex sealing front cover 6 and the elastic sealing rear cover 1 jointly form a sealing environment, and the aluminum film 4 with the air holes and the FEP film 2 of the conductive ink printing electrode are sealed in the sealing environment. Wherein:
the elastic sealing rear cover 1 is made of soft silica gel.
The elastic convex sealing front cover 6 is made of hard silica gel. The elastic bulge-like sealed front cover 6 forms an air chamber 5 inside its bulge. The elastic convex sealing front cover 6 is provided with a fixing groove 8 for fixing the air hole aluminum film 4. The elastic bulge-shaped sealing front cover 6 is provided with a limiting edge 7 for limiting the volume change amplitude of the air chamber 5.
The FEP film 2 of the conductive ink printing electrode is fixed on the inner side of the elastic sealing rear cover 1, and the back part of the FEP film is printed with the conductive ink and can move along with the elastic rear cover 1.
The aluminum film 4 with the air holes is fixed on the side of the elastic convex sealing front cover 6, and the air holes 3 are distributed. The aluminum film 4 with the air holes is provided with a fixing part 9, and the aluminum film 4 with the air holes is placed into the fixing groove 8 of the elastic convex sealing front cover 6 through the fixing part 9 to achieve the fixing effect.
As shown in fig. 3, the physical mechanism by which the tactile sensor operates is: the volume of the air chamber 5 is reduced under the action of external force, gas in the air chamber 5 flows out of the air chamber through the air holes 3 of the aluminum film 4, the elastic sealing rear cover 1 is caused to swell, meanwhile, the FEP film 2 moves along with the cover 1 and is separated from the aluminum film 4, extra electronic potential energy on the surface of the aluminum film 4 disappears, electrons flow out of an external circuit from an electrode of the FEP along an external circuit due to the potential difference between an aluminum contact surface and a back electrode of the FEP, so that the loss of electrons of the aluminum is compensated, the potential difference is balanced, induced charges are generated at the moment, and electric signals are generated. When the external force disappears, the volume of the air chamber 5 is restored due to the elastic force, the air flows back into the air chamber 5 through the air holes 3 under the action of the pressure, and at the moment, the FEP film 2 is in contact with the aluminum film 4, so that the potential difference is generated, and the reverse electron flow is generated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A bionic touch sensor based on a friction nanometer generator is characterized in that: comprises an elastic convex sealing front cover (6), an aluminum film (4) with air holes, a conductive ink (10), a printing electrode FEP film (2) and an elastic sealing rear cover (1);
the elastic convex sealing front cover (6) and the elastic sealing rear cover (1) jointly form a sealing environment, the aluminum film (4) with the air holes and the FEP film (2) are sealed, and an air chamber (5) is formed at the inner side of the convex part of the elastic convex front cover; the FEP film (2) is fixed on the inner side of the elastic sealing rear cover (1), and conductive ink is printed on the back of the FEP film and can move along with the elastic rear cover (1); the aluminum film (4) with the air holes is fixed on the side of the elastic convex sealing front cover (6) and is distributed with the air holes (3).
2. The bionic touch sensor based on the friction nano generator as claimed in claim 1, wherein: the aluminum film (4) with the air holes is provided with a fixing part (9), the elastic convex sealing front cover (6) is provided with a fixing groove (8), and the aluminum film (4) with the air holes is placed in the fixing groove (8) of the elastic convex sealing front cover (6) through the fixing part (9) to achieve the fixing effect.
3. The bionic touch sensor based on the friction nano generator as claimed in claim 1, wherein: the elastic convex sealing front cover (6) is provided with a limiting edge (7) for limiting the volume change amplitude of the air chamber (5).
4. The bionic touch sensor based on the friction nano generator as claimed in claim 1, wherein: the elastic sealing rear cover (1) is made of soft silica gel.
5. The bionic touch sensor based on the friction nano generator as claimed in claim 1, wherein: the elastic convex sealing front cover (6) is made of hard silica gel.
6. The bionic touch sensor based on the friction nano generator as claimed in claim 1, wherein: the volume of the air chamber (5) is reduced under the action of external force, gas in the air chamber (5) flows out of the air chamber through the air holes (3) of the aluminum film (4) with the air holes, so that the elastic sealing rear cover (1) is expanded, meanwhile, the FEP film (2) moves along with the rear cover (1) and is separated from the aluminum film (4) with the air holes, and simultaneously, induced charges are generated to generate electric signals;
when the external force disappears, the air chamber (5) can recover the volume due to the elastic force, the air returns to the air chamber (5) through the air holes (3) under the action of pressure, and the FEP film (2) recovers the original position and is in contact with the aluminum film (4) with the air holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210923853.7A CN115265878B (en) | 2022-08-02 | Bionic touch sensor based on friction nano generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210923853.7A CN115265878B (en) | 2022-08-02 | Bionic touch sensor based on friction nano generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115265878A true CN115265878A (en) | 2022-11-01 |
| CN115265878B CN115265878B (en) | 2024-05-17 |
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| CN104242723A (en) * | 2013-06-13 | 2014-12-24 | 国家纳米科学中心 | Single-electrode friction nanogenerator and generating method and self-driven tracking device |
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| US20160033343A1 (en) * | 2014-08-01 | 2016-02-04 | The Board Of Trustees Of The Leland Stanford Junior University | Methods and apparatus concerning multi-tactile sensitive (e-skin) pressure sensors |
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Patent Citations (10)
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| CN104242723A (en) * | 2013-06-13 | 2014-12-24 | 国家纳米科学中心 | Single-electrode friction nanogenerator and generating method and self-driven tracking device |
| CN104426418A (en) * | 2013-08-30 | 2015-03-18 | 纳米新能源（唐山）有限责任公司 | Generating air bag device and air bag generating shoes applying same |
| US20160033343A1 (en) * | 2014-08-01 | 2016-02-04 | The Board Of Trustees Of The Leland Stanford Junior University | Methods and apparatus concerning multi-tactile sensitive (e-skin) pressure sensors |
| CN107437902A (en) * | 2016-05-27 | 2017-12-05 | 北京纳米能源与***研究所 | A kind of implanted collection of energy device |
| US20210320596A1 (en) * | 2020-01-21 | 2021-10-14 | University Of Electronic Science And Technology Of China | Self-powered automobile exhaust gas sensor and preparation method thereof |
| CN112049894A (en) * | 2020-08-24 | 2020-12-08 | 海南大学 | Semi-active energy recovery vibration absorber |
| CN113162457A (en) * | 2021-04-23 | 2021-07-23 | 大连海事大学 | Bionic touch sensor based on friction nano generator |
| CN113507232A (en) * | 2021-07-13 | 2021-10-15 | 大连海事大学 | Ship-engine vibration self-driven sensing device based on friction nano generator |
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