CN114531058A - 3D piezoelectric energy collecting device for collecting flapping motion energy of hymenoptera insects - Google Patents
3D piezoelectric energy collecting device for collecting flapping motion energy of hymenoptera insects Download PDFInfo
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- CN114531058A CN114531058A CN202210302227.6A CN202210302227A CN114531058A CN 114531058 A CN114531058 A CN 114531058A CN 202210302227 A CN202210302227 A CN 202210302227A CN 114531058 A CN114531058 A CN 114531058A
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- 241000257303 Hymenoptera Species 0.000 title claims abstract description 44
- 241000238631 Hexapoda Species 0.000 claims abstract description 53
- 238000003306 harvesting Methods 0.000 claims description 11
- 239000002033 PVDF binder Substances 0.000 claims description 10
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 10
- 239000003364 biologic glue Substances 0.000 claims description 3
- 230000010287 polarization Effects 0.000 claims description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 210000000038 chest Anatomy 0.000 description 10
- 210000000481 breast Anatomy 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000007704 transition Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000059 patterning Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 241000254173 Coleoptera Species 0.000 description 1
- 241000256011 Sphingidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013037 co-molding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
- H02N2/186—Vibration harvesters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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Abstract
The invention provides a 3D piezoelectric energy collecting device for collecting flapping motion energy of hymenoptera insects, which comprises an insect wing connecting structure, a folding deformation structure, a middle connecting structure and a chest connecting structure. The insect wing attachment structure is configured in the form of an open channel that can be joined to the leading edge portion at distance 1/3 from the base of the wing, while the folded-over edge portion can be bonded to the wing surface. The folding deformation structure is designed by imitating folded paper, and can be effectively folded and unfolded in the flapping process of the wings of the insects. The middle connecting structure is designed to be in a winding shape and is used for connecting the two side folding deformation structures while maintaining the freedom degree of the space longitudinal direction. The chest connecting structure is designed to be an arched chest common-type structure, so that the piezoelectric film structure can be bonded with the insect chest. The invention can realize the energy collection in the flapping flight process of hymenoptera insects, thereby providing electric energy for the microcontroller carried by the semi-mechanical insect aircraft.
Description
Technical Field
The invention belongs to the technical field of energy collection, and particularly relates to a 3D piezoelectric energy collection device for collecting flapping motion energy of hymenoptera insects.
Background
The Micro-Air-Vehicles (MAV) is a flying robot similar to an insect in size, can form network interconnection due to small size, and has great application potential in dangerous environments such as search and rescue actions, explosive monitoring, monitoring and detection and the like. Since insects in nature have superior aerodynamic performance, outstanding maneuverability, and the ability to withstand loads in excess of their weight, researchers have been working on the construction of a controllable semi-mechanical insect vehicle. The one-time service life of these semi-mechanical insect aircraft is greatly limited due to the contradiction between the miniaturization and the higher energy density of conventional batteries. Energy collection is used as a mode for continuously converting energy depending on the environment, the problem of one-time flight life of the semi-mechanical insect can be effectively solved, and researchers are dedicated to self-power supply of the semi-mechanical insect aircraft by using vibration of organisms as the miniaturization technology of the biological vibration energy collecting device is mature day by day.
At present, researchers respectively realize vibration energy collection of insects such as the hawkmoth and the beetle during flying by utilizing electromagnetic and piezoelectric energy collection modes, and can effectively provide electric energy for a microcontroller carried by the insects. However, most of the currently used energy collecting devices are variants of the traditional rigid piezoelectric beam, and have certain limitations for small-volume hymenoptera insects with high flapping frequency, such as bees. Therefore, the design of the piezoelectric type energy collecting structure which is applicable to the flexibility, the light weight and the commonalization of hymenoptera insects has great significance for the development of semi-mechanical insect aircrafts.
Disclosure of Invention
The invention aims to provide a 3D piezoelectric energy collecting device for collecting the flapping motion energy of hymenoptera insects, which can be suitable for the flapping process of the hymenoptera insects such as bees and the like, and is a 3D piezoelectric energy collecting film structure integrating flexibility, light weight and co-molding into a whole, so that the transformation of the flapping motion energy to electric energy can be effectively realized on the basis of reducing the influence on the flapping flight of the hymenoptera insects to the maximum extent, the electric energy is provided for microcontrollers and the like carried by a hymenoptera semi-mechanical insect aircraft, the one-time flight life of the hymenoptera semi-mechanical insect aircraft is further prolonged, and the development of the semi-mechanical insect aircraft is promoted.
The invention provides a 3D piezoelectric energy collecting device for collecting flapping motion energy of hymenoptera insects, which comprises a left piezoelectric energy collecting structure and a right piezoelectric energy collecting structure, wherein the left piezoelectric energy collecting structure and the right piezoelectric energy collecting structure are arranged on an insect body;
the wing connection structure is in the shape of an open groove and is used for being combined with a leading edge part of a wing separation base 1/3 of a hymenoptera insect, and an edge folding part of the wing connection structure is folded and then is bonded with a wing surface of the insect wing through a biological adhesive;
the first folding deformation structure and the second folding deformation structure are positioned on two sides of the middle connecting structure and are connected through the middle connecting structure; one end of the first folding deformation structure, one end of the second folding deformation structure and one end of the middle connecting structure are connected with the wing connecting structure, and the other end of the first folding deformation structure, the second folding deformation structure and the middle connecting structure are connected with the chest connecting structure; the first folding deformation structure and the second folding deformation structure adopt a paper folding design and can be folded and unfolded along with flapping of the flapping wings of the insects;
the first folding deformation structure and the second folding deformation structure form an arch-shaped included angle of 120 degrees and are connected through the intermediate connecting structure, so that the piezoelectric energy collecting structure is integrally in a space multi-degree-of-freedom 3D structure; the intermediate connecting structure is a serpentine structure which is easy to deform, and is longitudinally arrayed along the folding structure;
the chest connecting structure is in a local light-weighted arch shape and is used for being attached and fixed to the chest of an insect.
Further, the piezoelectric energy collection structure is composed of a middle PVDF thin layer, a PVDF thick layer, an upper surface electrode layer and a lower surface electrode layer.
Furthermore, the wave crests of the folding deformation parts of the first folding deformation structure and the second folding deformation structure and the wave troughs of the folding deformation parts adopt thickness reduction design.
Furthermore, the first folding deformation structure and the second folding deformation structure adopt patterned distribution in the surface electrode distribution, namely, the electrode is sprayed at the peak position of the folding deformation part, and the trough position of the folding deformation part is not sprayed, so that electric energy offset caused by different polarization directions is avoided, and the energy collection output efficiency is improved.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention comprises an open slot structure connected with the hymenoptera insect wing and a folding and fitting design, and can be well combined and fixed with the position of the insect wing from the wing base 1/3.
2) The invention comprises folding deformation structures positioned at two sides, can realize folding and unfolding along with flapping of the flapping wings of insects, and reduces the influence of an energy collecting structure on the flapping wing movement while carrying out piezoelectric energy conversion.
3) The piezoelectric actuator comprises a middle winding connection structure, and two side folding structures are connected through a flexible winding structure, so that gain can be provided for piezoelectric energy output while multiple degrees of freedom of motion in space are guaranteed.
4) The invention comprises an arched structure connected with the breast of a hymenoptera insect, and one end of the piezoelectric energy collecting structure can be fixed with the breast of the insect through the design of the arched structure and the breast of the insect.
5) The piezoelectric energy collection structure is relatively simple in form, reasonable in structural design and distributed in a 3D space, so that the piezoelectric energy collection structure can be well suitable for energy collection in the flapping flight process of hymenoptera insects, and further provides electric energy for a microcontroller carried by a semi-mechanical insect aircraft.
Drawings
FIG. 1 is a schematic structural diagram (rear view) of a 3D piezoelectric energy collecting device for collecting energy of flapping wings of hymenoptera insects in the invention, which is installed on the insects;
FIG. 2 is a schematic structural diagram (top view) of a 3D piezoelectric energy collecting device for collecting energy of the flapping wings of hymenoptera insects in the invention;
FIG. 3 is a schematic front view (left wing portion) of the 3D piezoelectric energy harvesting for energy harvesting of the flapping wings of hymenoptera insects in the present invention;
FIG. 4 is a schematic middle sectional view of a 3D piezoelectric energy collection device for collecting energy of the flapping motion of hymenoptera insects in the invention;
FIG. 5 is a schematic diagram of transition of local thickness of wave crests and wave troughs of a 3D piezoelectric energy collection device for collecting energy of flapping wings of hymenoptera insects in the invention;
FIG. 6 is a schematic layered diagram of a 3D piezoelectric energy harvesting device for collecting energy from the flapping motion of hymenoptera insects in the present invention;
fig. 7 is a distribution diagram of the electrode patterning of the 3D piezoelectric energy collection device for collecting the flapping motion energy of hymenoptera insects in the present invention.
The labels in the figure are:
1. a first 3D piezoelectric energy harvesting structure; 1-1, wing connecting structure; 1-2, a first folding deformation structure; 1-3, an intermediate connection structure; 1-4, chest connection structure; 1-5, a second folding deformation structure; 1-5A, folding the wave crest of the deformed part; 1-5B, folding the wave trough of the deformation part; 1-A, an upper surface electrode layer; 1-B, PVDF thin layer; 1-C, PVDF thick layers; 1-D, an electrode layer on the lower surface.
2. A second 3D piezoelectric energy harvesting structure;
3. an insect body; 3-1, the leading-edge part of hymenoptera insect wing off-wing base 1/3 (wing attachment location of piezoelectric energy harvesting structure); 3-2, the position of the chest of the insect;
4. and supporting the plane.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
As shown in fig. 1 and 2, the piezoelectric energy collecting device is mounted on the insect body. The insect trap comprises a left 3D piezoelectric energy collecting structure, a right 3D piezoelectric energy collecting structure, a first 3D piezoelectric energy collecting structure, a second 3D piezoelectric energy collecting structure 2, an insect body 3 and a supporting plane 4. The leading-edge part 3-1 (wing connection position of piezoelectric energy collecting structure) of the hymenoptera insect wing from the wing base 1/3 is located at the position of the insect wing from the wing base 1/3, and the other end is fixed at the position 3-2 of the insect chest.
Fig. 3 is a schematic front view (left wing portion) of a 3D piezoelectric energy harvesting device for collecting energy from the flapping motion of hymenoptera insects in the present invention. The whole piezoelectric energy collecting structure in the embodiment is made of a PVDF piezoelectric film, and includes a wing connecting structure 1-1, two side folding deformation structures, i.e., a first folding deformation structure 1-2 and a second folding deformation structure 1-5, a middle connecting structure 1-3, and a chest connecting structure 1-4. The wing connecting structure 1-1 is designed to be an open slot structure and an edge turning and folding attachment mode, and can be connected with insect wings. The wing connecting structure is in a co-modeling design with a structure at the wing leading edge 1/3 of the hymenoptera insect to form an open slot clamping structure; the edge portion is then folded and consolidated to the insect wing using a biological adhesive. The first folding deformation structure 1-2 and the second folding deformation structure 1-5 can be continuously folded and unfolded along with flapping of the flapping wings of the insects, so that the piezoelectric film is deformed, and mechanical energy is converted into electric energy. The folding deformation structure is designed by imitating a paper folding deformation mechanism, and when an insect flies, the insect can be effectively folded and unfolded along with flapping of the flapping wings, so that the influence on flying of the flapping wings of the insect is reduced while energy conversion is carried out.
The first folding deformation structures 1-2 and the second folding deformation structures 1-5 on the two sides are connected through the middle connecting structures 1-3, the middle connecting structures are designed to be in a winding shape, the flexibility of the whole 3D structure can be further improved through the connection in the mode, meanwhile, the piezoelectric energy conversion can be realized through the deformation of the winding structures, and the whole energy output is improved. The middle winding structure has certain deformability, so that the middle winding structure is suitable for the longitudinal wing swing of insects, can convert certain piezoelectric energy, and improves the piezoelectric output performance of the whole structure. The chest connecting structure 1-4 is designed into an arch shape with the shape of the chest of the insect and can be attached to the chest of the insect. The breast connecting structure is combined with the arched shape of the breast of the insect, and can be effectively adhered to the breast of the hymenoptera insect.
Fig. 4 is a schematic middle sectional view of a 3D piezoelectric energy collection device for collecting energy from the flapping motion of hymenoptera insects according to the present invention. In order to adapt to the multi-degree-of-freedom movement during flapping of the flapping wings, the integral piezoelectric energy collecting structure is transversely designed into an arch structure (two folding structures form a 120-degree arch included angle) with an included angle of 120 degrees between a first folding deformation structure 1-2 and a second folding deformation structure 1-5, and is connected through a winding structure, so that the integral piezoelectric energy collecting structure has the freedom degrees in multiple directions, is integrally of a space multi-degree-of-freedom 3D structure, and can effectively adapt to flapping movement of the flapping wings of insects. The two folding structures form an arch included angle of 120 degrees and are connected through a winding structure, so that the piezoelectric film structure is integrally of a space multi-degree-of-freedom 3D structure.
Fig. 5 is a schematic diagram showing local thickness transition of wave crests and wave troughs of the 3D piezoelectric energy collecting device for collecting energy of flapping wings of hymenoptera insects in the present invention. The folding-deformation-part wave crests 1-5A and the folding-deformation-part wave troughs 1-5B are included, and in order to effectively fold and unfold in the flapping motion of the flapping wings, local thickness transition change at the wave crest and wave trough positions is designed.
Fig. 6 is a schematic layered diagram of a 3D piezoelectric energy harvesting device for collecting energy from flapping wings of hymenoptera insects according to the present invention. The piezoelectric energy collecting structure (piezoelectric energy collecting film) is of a four-layer structure in the thickness direction and comprises an upper surface electrode layer 1-A, PVDF thin layer 1-B, PVDF thick layer 1-C and a lower surface electrode layer 1-D, so that thickness transition of wave crests and wave troughs of a folding deformation part can be realized. The piezoelectric energy collecting film is of a four-layer structure formed by electrode layers on the upper surface and the lower surface and a middle PVDF thick layer and a thin layer, the thin layer and the thick layer are mainly used for forming transition in thickness at wave crests and wave troughs of a folding deformation structure part, and then a 3D structure is formed more easily in the buckling forming process, and the folding and unfolding functions can be effectively realized.
Fig. 7 is a diagram showing the electrode patterning distribution of the 3D piezoelectric energy collecting device for collecting the flapping motion energy of hymenoptera insects in the present invention. According to the theory and simulation analysis results, the electrode patterning distribution design is carried out on the surface of the 3D piezoelectric energy collecting film structure, and then mutual energy offset caused by different polarization directions in the folding and unfolding processes is prevented.
The 3D piezoelectric energy collecting device for collecting the flapping motion energy of hymenoptera insects has the following technical effects:
1) the invention comprises an open slot structure connected with the hymenoptera insect wing and a folding and fitting design, and can be well combined and fixed with the position of the insect wing from the wing base 1/3.
2) The invention comprises folding deformation structures positioned at two sides, can realize folding and unfolding along with flapping of the flapping wings of insects, and reduces the influence of an energy collecting structure on the flapping wing movement while carrying out piezoelectric energy conversion.
3) The piezoelectric actuator comprises a middle winding connection structure, and two side folding structures are connected through a flexible winding structure, so that gain can be provided for piezoelectric energy output while multiple degrees of freedom of motion in space are guaranteed.
4) The invention comprises an arched structure connected with the breast of a hymenoptera insect, and one end of the piezoelectric energy collecting structure can be fixed with the breast of the insect through the design of the arched structure and the breast of the insect.
5) The piezoelectric energy collection structure is relatively simple in form, reasonable in structural design and distributed in a 3D space, so that the piezoelectric energy collection structure can be well suitable for energy collection in the flapping flight process of hymenoptera insects, and further provides electric energy for a microcontroller carried by a semi-mechanical insect aircraft.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (4)
1. A3D piezoelectric energy collecting device for collecting energy of flapping motion of hymenoptera insects comprises a left piezoelectric energy collecting structure and a right piezoelectric energy collecting structure which are arranged on an insect body (3), wherein the piezoelectric energy collecting structures comprise wing connecting structures (1-1), first folding deformation structures (1-2), second folding deformation structures (1-5), middle connecting structures (1-3) and chest connecting structures (1-4);
the wing connection structure (1-1) is in the shape of an open groove and is used for being combined with a leading edge part (3-1) of a wing separation base 1/3 of a hymenoptera insect, and an edge folding part of the wing connection structure (1-1) is folded and then is bonded with the wing surface of the insect wing through biological adhesive;
the first folding deformation structure (1-2) and the second folding deformation structure (1-5) are positioned on two sides of the middle connecting structure and are connected through the middle connecting structure (1-3); one end of the first folding deformation structure (1-2), one end of the second folding deformation structure (1-5) and one end of the middle connecting structure (1-3) are connected with the wing connecting structure (1-1), and the other end of the middle connecting structure are connected with the chest connecting structure (1-4); the first folding deformation structure (1-2) and the second folding deformation structure (1-5) adopt a paper folding design and can be folded and unfolded along with flapping of the wings of the insects;
the first folding deformation structure (1-2) and the second folding deformation structure (1-5) form an arch included angle of 120 degrees and are connected through the intermediate connecting structure (1-3), so that the piezoelectric energy collecting structure integrally forms a space multi-degree-of-freedom 3D structure; the intermediate connection structure (1-3) is a serpentine structure that is easily deformable, while being longitudinally arrayed along the folded structure;
the chest connecting structure (1-4) is in a local light-weighted arch shape and is used for being attached and fixed with the insect chest position (3-2).
2. The 3D piezoelectric energy harvesting device for hymenoptera insect flapping motion energy harvesting of claim 1, wherein the piezoelectric energy harvesting structure is composed of a middle thin PVDF layer (1-B), a thick PVDF layer (1-C), and upper (1-a) and lower (1-D) surface electrode layers.
3. The 3D piezoelectric energy collecting device for hymenoptera insect flapping motion energy collecting according to claim 1, wherein the first folding deformation structure (1-2), the second folding deformation structure (1-5) adopts a thickness reduction design at the positions of the wave crests (1-5A) and the wave troughs (1-5B) of the folding deformation parts.
4. The 3D piezoelectric energy collection device for collecting the flapping motion energy of hymenoptera insects according to claim 3, wherein the electrode distribution on the surfaces of the first folding deformation structure (1-2) and the second folding deformation structure (1-5) adopts a patterned distribution, that is, the electrode is sprayed on the peak (1-5A) position of the folding deformation part, and the electrode is not sprayed on the valley (1-5B) position of the folding deformation part, so as to avoid electric energy offset caused by different polarization directions and improve the energy collection output efficiency.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026768A (en) * | 2016-05-30 | 2016-10-12 | 郑州大学 | Vibration energy collector |
| CN106081104A (en) * | 2016-07-20 | 2016-11-09 | 上海交通大学 | A kind of insecticide yardstick Piezoelectric Driving flapping-wing MAV |
| CN106081103A (en) * | 2016-08-04 | 2016-11-09 | 北京航空航天大学 | A kind of based on the power-actuated micro flapping wing air vehicle of Lorentz |
| WO2018140709A1 (en) * | 2017-01-26 | 2018-08-02 | The Trustees Of Dartmouth College | Method and apparatus for energy harvesting using polymeric piezoelectric structures |
| CN110182362A (en) * | 2019-06-06 | 2019-08-30 | 江苏航空职业技术学院 | A kind of flap structure of solar panel flapping wing aircraft |
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- 2022-03-24 CN CN202210302227.6A patent/CN114531058B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026768A (en) * | 2016-05-30 | 2016-10-12 | 郑州大学 | Vibration energy collector |
| CN106081104A (en) * | 2016-07-20 | 2016-11-09 | 上海交通大学 | A kind of insecticide yardstick Piezoelectric Driving flapping-wing MAV |
| CN106081103A (en) * | 2016-08-04 | 2016-11-09 | 北京航空航天大学 | A kind of based on the power-actuated micro flapping wing air vehicle of Lorentz |
| WO2018140709A1 (en) * | 2017-01-26 | 2018-08-02 | The Trustees Of Dartmouth College | Method and apparatus for energy harvesting using polymeric piezoelectric structures |
| CN110182362A (en) * | 2019-06-06 | 2019-08-30 | 江苏航空职业技术学院 | A kind of flap structure of solar panel flapping wing aircraft |
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