CN108023501A - A kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying - Google Patents
A kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying Download PDFInfo
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- CN108023501A CN108023501A CN201711454284.1A CN201711454284A CN108023501A CN 108023501 A CN108023501 A CN 108023501A CN 201711454284 A CN201711454284 A CN 201711454284A CN 108023501 A CN108023501 A CN 108023501A
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- 239000000725 suspension Substances 0.000 title claims abstract description 41
- 230000006698 induction Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000003475 lamination Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
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- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying, designs a rectangular box（1）, a bar shaped piezoelectric cantilever（2）One end be fixed in the vertical edges of framework, the upper surface of the piezoelectric cantilever other end is fixed with a magnetic suspension vibrating energy acquisition module（5）, piezoelectric cantilever lower surface is fixed with a piezoelectric beam magnet（4）, a framework magnet is fixed with the horizontal sides of framework below piezoelectric beam magnet（3）, and framework magnet is oppositely arranged with piezoelectric beam magnet, and there is spacing；The cylinder that the magnetic suspension vibrating energy acquisition module is made of non-magnet material, top and cylinder bottom in cylinder are respectively fixed with a fixed magnet（5‑1、5‑4）, a movable magnet is configured between two pieces of fixed magnets（5‑3）, cylinder outer wall is provided with two induction coils（5‑2）, using movement of the movable magnet in cylinder, electricity output can be produced in induction coil.
Description
Technical field
The present invention relates to a kind of device of energy technology field, more particularly to a kind of combined type using structure for amplifying
Magnetic suspension wideband vibration energy collector.
Background technology
Vibration is a kind of phenomenon of generally existing in environment, is widely present in bridge, building, ship, vehicle, lathe, family
Electrical appliance（Refrigerator, washing machine, micro-wave oven）Etc. in various production and living equipment, the blood flow of human body is existed in, heart is jumped
In the life processes such as dynamic, limb motion.It is wireless network, embedded system etc. if the vibration in environment is converted into electric energy
Low power consuming devices are powered, and have a very wide range of applications prospect.
Energy-collecting method based on vibration generally has three kinds：Electromagnetic type, electrostatic and piezoelectric type.Wherein, electromagnetic type is shaken
Energy collector has the low (representative value of output voltage<1V), the features such as output off current HIGH；Piezoelectric type vibration energy acquisition utensil
There is the features such as output voltage is high, output current is low, output impedance is high；Electrostatic type vibration energy collector construction have output voltage it is high,
Output current is low, output power density is low, needs offer initial voltage or Charge Source to work.Every kind of vibrational energy collection side
Formula has its advantage and disadvantage, there is different applicable objects.If two or more energy acquisition modes is combined into composition combined type
Vibration energy collector, the scope of application will be wider.
Maglev electromagnetic vibration energy harvester has the advantages that high conversion efficiency, high sensitivity, compact-sized, is
One of preferable design in electromagnetic vibration energy harvester.Found by the retrieval to the prior art, Chinese Patent Application No.：
It is 201220227976.9 entitled：A kind of magnetic suspension vibrating electricity generation module, the invention propose a kind of using maglev vibration
Energy collecting device, the collector by a housing, a movable permanent magnet, a fixing permanent magnet, inner wall smooth it is non-
Permeability magnetic material cylinder, a non-magnetic spring, more than two induction coils are formed.Fixing permanent magnet is fixed on non-magnet material cylinder
Bottom, movable permanent magnet is suspended in the middle part of non-magnet material cylinder under the action of the repulsive force of fixed magnet.Induction coil
It is wound on outside non-magnet material cylinder.The upper end of non-magnet material cylinder is fixed in one end of non-magnetic spring, plays elastic spacing
Effect, it is too big to prevent that movable permanent magnet from shifting up.When collector senses vibration, movable permanent magnet will be relatively non-magnetic
Material cylinder moves up and down, and the magnetic flux for sensing change is produced electricity output by induction coil.A kind of electromagnetic levitation type of Chinese patent exempts to rub
Wipe vibrational energy harvester（Application number：201710324575.2）, on the basis of above-mentioned patent, by the movable permanent magnetism of suspension
Structural reform installs lateral fixed magnet into combined type suspending permanent magnet on non-magnet material cylinder.Combined suspending permanent magnet by
Upper suspension magnet, radiate the magnet that magnetizes, low suspension magnet, magnet fixed block one entirety of composition.Laterally secure magnet and radiation
The magnet poles that magnetize are identical, mutually exclusive, avoid the friction of suspension magneton and enclosure cavity inner surface, effectively avoid friction from producing
Raw energy loss.Although magnetic suspension electromagnetic vibration energy harvester has high conversion efficiency, high sensitivity, compact-sized etc.
Advantage, but there are frequency band relative narrower, the lower output power of low-level vibration is low and the deficiencies such as output voltage is low.
The content of the invention
Present invention aims to overcome that the deficiencies in the prior art, there is provided a kind of bandwidth, low-level vibration be lower can export compared with
High power, the magnetic suspension vibrating energy collecting device with two kinds of energy acquisition modes of piezoelectric type and electromagnetic type, solve traditional magnetic
The deficiencies such as suspension vibrating energy collector frequency band is narrow, output power is low, output voltage is low under low-level vibration.
To achieve the above object, technical solution of the present invention is：
Using the combined-type magnetic suspension wideband vibration energy collector of structure for amplifying, it is characterised in that：Design a rectangular box, one
One end of bar shaped piezoelectric cantilever is fixed in the vertical edges of framework, and the upper surface of the piezoelectric cantilever other end is fixed with a magnetic
Suspension vibrating energy acquisition module, piezoelectric cantilever lower surface are fixed with a piezoelectric beam magnet, piezoelectric beam magnet lower section framework
Horizontal sides on be fixed with a framework magnet, and framework magnet is oppositely arranged with piezoelectric beam magnet, and has spacing；Described
The cylinder that magnetic suspension vibrating energy acquisition module is made of non-magnet material, top and cylinder bottom in cylinder are respectively fixed with one
Fixed magnet, is configured with a movable magnet between two pieces of fixed magnets, cylinder outer wall is provided with two induction coils, utilizes work
Movement of the moving magnet in cylinder, can produce electricity output in induction coil.
The piezoelectric beam magnet and the opposite face of both framework magnet are same polarity or opposite polarity, it is ensured that piezoelectric beam magnetic
External vibration is effectively converted into Non-Linear Vibration by the magnetic force energy between iron and framework beam magnet so that device obtains broadband
Characteristic.
The magnetic suspension vibrating energy acquisition mould top fixed magnet in the block, bottom fixed magnet, movable magnet are equal
Using circular magnet, the diameter of movable magnet is less than the internal diameter of cylinder, can freely move up and down within the barrel.
The movable magnet is identical with the polarity of top fixed magnet and bottom fixed magnet opposite face, solid at the two
The repulsive force of fixed magnet acts on low suspension portion within the barrel.
The piezoelectric cantilever includes flexible middle support layer and the piezoelectricity for being bonded in middle support layer both sides
Layer, by carrying out voltage output in parallel or series between piezoelectric layer.
When collector senses external vibration, piezoelectric cantilever will amplify external vibration, and amplified vibration is applied to
In magnetic suspension vibrating energy acquisition module, make movable magnet that upper and lower vibration back and forth occur, and produce the magnetic flux of change, two senses
The magnetic flux of coil-induced change is answered to produce electricity output.When piezoelectric cantilever vibrates, because of piezoelectric effect, it is defeated also to produce electricity
Go out.
The advantages of described combined-type magnetic suspension wideband vibration energy collector using structure for amplifying, is：
（1）Magnetic suspension vibrating energy collecting device vibration displacement is exaggerated using piezoelectric cantilever so that magnetic suspension vibrating energy is adopted
Collection module can also export higher power under low-level vibration.
（2）The end of piezoelectric cantilever is acted on be subject to non-linear magnetic force between upper lower magnet so that piezoelectric cantilever shakes
Move as Non-Linear Vibration, so as to extend the frequency band of piezoelectric cantilever.By appropriate design make the bandwidth of piezoelectric cantilever with
The bandwidth of magnetic suspension vibrating energy acquisition module is close to each other, can effectively widen the frequency bandwidth of collector.
（3）Piezoelectricity and electromagnetic energy collection are incorporated, takes full advantage of the vibration of collector each several part, can be captured more
Vibrational energy, the advantages of exporting the power of higher, be provided simultaneously with piezoelectricity and electromagnetic energy acquisition mode.
Scheme is described in more detail with reference to diagram and embodiment.
Brief description of the drawings
Fig. 1 is the combined-type magnetic suspension wideband vibration energy collector schematic diagram using structure for amplifying；
Attached figure label title：1 framework, 2 piezoelectric cantilevers, 2-1 middle support layers, 2-2 piezoelectric layers, 3 framework magnet, 4 piezoelectricity
Beam magnet, 5 magnetic suspension vibrating energy acquisition modules, 5-1 bottoms fixed magnet, 5-2 coils, 5-3 movable magnets, 5-4 tops are solid
Fixed magnet, 5-5 cylinders.
Embodiment
Elaborate below to the embodiment of the present invention, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
One end of piezoelectric cantilever 2 is fixed in framework 1, the other end（Free end）Upper surface be fixed with a magnetic suspension
Vibrational energy acquisition module 5, lower surface are fixed with a piezoelectric beam magnet 4.It is solid in the framework 1 of the underface of piezoelectric beam magnet 4
Surely there is the framework magnet 3 that a size is identical.There are mutually exclusive or mutual suction between piezoelectric beam magnet 4 and framework magnet 3
The magnetic force drawn.
Piezoelectric cantilever 2 is made of three layers of bonding：Upper and lower two layers is piezoelectric layer 2-2, and material is piezoelectric ceramics, its surface
Metal electrode layer is covered, for the voltage output of two piezoelectric layer 2-2 to be connected in parallel or series, middle support layer 2-1 is steel or beryllium
Bronze elastic material, its width are consistent with piezoelectric layer 2-2.Piezoelectric cantilever 2 is sticked to middle support layer by a lamination electric layer 2-2
2-1 is formed.
Magnetic suspension vibrating energy acquisition module 5 is by cylinder 5-5, top fixed magnet 5-4, bottom fixed magnet 5-1, activity
Magnet 5-3, two induction coil 5-2 are formed.Cylinder 5-5 uses non-magnet material.Top fixed magnet 5-4 is fixed on cylinder 5-
5 top, bottom fixed magnet 5-1 are fixed on the bottom of cylinder 5-5.Top fixed magnet 5-4, bottom fixed magnet 5-1, work
Moving magnet 5-3 uses cylinder magnet body, and the diameter of movable magnet 5-3 is slightly less than the internal diameter of cylinder 5-5, can be in cylinder 5-5
In freely move up and down.Top fixed magnet 5-4, bottom fixed magnet 5-1, the magnetic direction of movable magnet 5-3 are all along thickness
Direction is spent, during installation, movable magnet 5-3 is identical with the polarity of top fixed magnet 5-4, bottom fixed magnet 5-1 opposite faces.This
Sample, movable magnet 5-3 act on the repulsive force for being subject to top and bottom fixed magnet, movable magnet 5-3 is suspended in cylinder 5-5
Middle part.
Two induction coil 5-2 are coiled into by copper wire, are helical coil structure, rotating around in the outside of cylinder 5-5, and magnetic force
The intensive place of line.
When collector senses external vibration, piezoelectric cantilever 2 will amplify external vibration, and amplified vibration is applied to
In magnetic suspension vibrating energy acquisition module 5, make movable magnet 5-3 that upper and lower vibration back and forth occur, and produce the magnetic flux of change, two
The magnetic flux of a induction coil 5-2 sensings change produces electricity output.When piezoelectric cantilever 2 vibrates, because of piezoelectric effect, it can also produce
Raw electricity output.
Since piezoelectric cantilever 2 is exaggerated the vibration displacement of magnetic suspension vibrating energy acquisition module 5 so that magnetic suspension vibrating
Energy acquisition module 5 can also export higher power under low-level vibration.
The end of piezoelectric cantilever 2 is acted on be subject to non-linear magnetic force between piezoelectric beam magnet 4 and framework magnet 3 so that pressure
The vibration of electric cantilever beam 2 is Non-Linear Vibration, so as to extend the frequency band of piezoelectric cantilever 2.If made by appropriate design
The bandwidth of piezoelectric cantilever 2 and the bandwidth of magnetic suspension vibrating energy acquisition module 5 are close to each other, can effectively widen collector
Frequency bandwidth.
Collector incorporates piezoelectricity and electromagnetic energy collection, takes full advantage of the vibration of collector each several part, can capture
More vibrational energies, export the power of higher, the advantages of being provided simultaneously with piezoelectricity and electromagnetic energy acquisition mode.
Claims (6)
- A kind of 1. combined-type magnetic suspension wideband vibration energy collector using structure for amplifying, it is characterised in that：Design a rectangle Framework（1）, a bar shaped piezoelectric cantilever（2）One end be fixed in the vertical edges of framework, the upper table of the piezoelectric cantilever other end Face is fixed with a magnetic suspension vibrating energy acquisition module（5）, piezoelectric cantilever lower surface is fixed with a piezoelectric beam magnet （4）, a framework magnet is fixed with the horizontal sides of framework below piezoelectric beam magnet（3）, and framework magnet and piezoelectric beam magnet It is oppositely arranged, and there is spacing；The cylinder that the magnetic suspension vibrating energy acquisition module is made of non-magnet material, in cylinder Top and cylinder bottom be respectively fixed with a fixed magnet（5-1、5-4）, a movable magnetic is configured between two pieces of fixed magnets Iron（5-3）, cylinder outer wall is provided with two induction coils（5-2）, can be in induction coil using movement of the movable magnet in cylinder Interior generation electricity output.
- 2. a kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying according to claim 1, its It is characterized in that：The piezoelectric beam magnet（4）With framework magnet（3）Both opposite faces are same polarity or opposite polarity.
- 3. a kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying according to claim 1, its It is characterized in that：The magnetic suspension vibrating energy acquisition mould top fixed magnet in the block（5-4）, bottom fixed magnet（5-1）, Movable magnet（5-3）Circular magnet is used, the diameter of movable magnet is less than cylinder（5-5）Internal diameter.
- 4. a kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying according to claim 3, its It is characterized in that：The movable magnet（5-3）With top fixed magnet（5-4）With bottom fixed magnet（5-1）The pole of opposite face Property is identical.
- 5. a kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying according to claim 1, its It is characterized in that：Piezoelectric cantilever（2）It is made of three layers of bonding：Upper and lower two layers is piezoelectric layer（2-2）, material is piezoelectric ceramics, its Surface covers metal electrode layer, two piezoelectric layers（2-2）Voltage output to be connected in parallel or series, middle support layer（2-1） For steel or beryllium-bronze elastic material, its width and piezoelectric layer（2-2）Unanimously.
- 6. a kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying according to claim 5, its It is characterized in that：Piezoelectric cantilever（2）Or by a lamination electric layer（2-2）It is sticked to middle support layer（2-1）Form.
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| CN201711454284.1A CN108023501A (en) | 2017-12-28 | 2017-12-28 | A kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108616228A (en) * | 2018-05-21 | 2018-10-02 | 南京航空航天大学 | Culvert type piezoelectricity-Electromagnetic heating wideband electricity energy harvester |
| CN109056489A (en) * | 2018-09-28 | 2018-12-21 | 乔振锋 | A kind of traffic engineering pavement of road joint-cutting device |
| CN110581672A (en) * | 2019-08-23 | 2019-12-17 | 华中科技大学 | wearable hybrid floating energy device and wearable equipment |
| CN110677006A (en) * | 2019-08-19 | 2020-01-10 | 西南大学 | Magnetic constraint rocker arm type vibration power generation device and system |
| CN111082632A (en) * | 2020-03-18 | 2020-04-28 | 长沙理工大学 | Broadband low-frequency vibration energy collecting device |
| CN111510022A (en) * | 2020-04-24 | 2020-08-07 | 南京理工大学 | Piezoelectric and magnetoelectric combined type miniature wind driven generator |
| CN111564945A (en) * | 2020-06-15 | 2020-08-21 | 河南工业大学 | Combined type vibration energy collector |
| CN111564946A (en) * | 2020-06-15 | 2020-08-21 | 河南工业大学 | Low-frequency broadband electromagnetic-piezoelectric-friction combined vibration energy collector |
| CN111884539A (en) * | 2020-07-14 | 2020-11-03 | 山东科技大学 | Piezoelectric electromagnetic composite wave floating energy device with vortex-induced bluff body vibration |
| CN112421985A (en) * | 2020-12-10 | 2021-02-26 | 哈尔滨工业大学 | Sectional type bimorph piezoelectricity-electromagnetism complex energy accumulator |
| CN112821708A (en) * | 2021-02-05 | 2021-05-18 | 南京领通汇智科技有限公司 | Bistable electromagnetic-piezoelectric hybrid vibration energy collector and self-powered sensing system |
| CN115603541A (en) * | 2022-12-01 | 2023-01-13 | 东北林业大学（Cn） | Tree swinging power generation device |
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| CN207588736U (en) * | 2017-12-28 | 2018-07-06 | 西华师范大学 | The wideband vibration energy collector that a kind of piezoelectricity is combined with magnetic suspension |
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| CN202713190U (en) * | 2012-08-27 | 2013-01-30 | 杭州电子科技大学 | Piezoelectric/electromagnetic combined-type micro energy device |
| CN104702147A (en) * | 2015-04-03 | 2015-06-10 | 南京信息工程大学 | Combined type broadband vibration energy collector |
| CN107508495A (en) * | 2017-08-28 | 2017-12-22 | 北京工业大学 | A kind of piezoelectricity electromagnetic vibration power generation device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108616228A (en) * | 2018-05-21 | 2018-10-02 | 南京航空航天大学 | Culvert type piezoelectricity-Electromagnetic heating wideband electricity energy harvester |
| CN108616228B (en) * | 2018-05-21 | 2019-08-13 | 南京航空航天大学 | Culvert type piezoelectricity-Electromagnetic heating wideband electricity energy harvester |
| CN109056489A (en) * | 2018-09-28 | 2018-12-21 | 乔振锋 | A kind of traffic engineering pavement of road joint-cutting device |
| CN110677006A (en) * | 2019-08-19 | 2020-01-10 | 西南大学 | Magnetic constraint rocker arm type vibration power generation device and system |
| CN110581672A (en) * | 2019-08-23 | 2019-12-17 | 华中科技大学 | wearable hybrid floating energy device and wearable equipment |
| CN111082632A (en) * | 2020-03-18 | 2020-04-28 | 长沙理工大学 | Broadband low-frequency vibration energy collecting device |
| CN111082632B (en) * | 2020-03-18 | 2020-09-15 | 长沙理工大学 | Broadband low-frequency vibration energy collecting device |
| CN111510022A (en) * | 2020-04-24 | 2020-08-07 | 南京理工大学 | Piezoelectric and magnetoelectric combined type miniature wind driven generator |
| CN111564946A (en) * | 2020-06-15 | 2020-08-21 | 河南工业大学 | Low-frequency broadband electromagnetic-piezoelectric-friction combined vibration energy collector |
| CN111564945A (en) * | 2020-06-15 | 2020-08-21 | 河南工业大学 | Combined type vibration energy collector |
| CN111564945B (en) * | 2020-06-15 | 2022-08-02 | 河南工业大学 | Combined type vibration energy collector |
| CN111884539A (en) * | 2020-07-14 | 2020-11-03 | 山东科技大学 | Piezoelectric electromagnetic composite wave floating energy device with vortex-induced bluff body vibration |
| CN112421985A (en) * | 2020-12-10 | 2021-02-26 | 哈尔滨工业大学 | Sectional type bimorph piezoelectricity-electromagnetism complex energy accumulator |
| CN112821708A (en) * | 2021-02-05 | 2021-05-18 | 南京领通汇智科技有限公司 | Bistable electromagnetic-piezoelectric hybrid vibration energy collector and self-powered sensing system |
| CN112821708B (en) * | 2021-02-05 | 2024-05-14 | 南京领通汇智科技有限公司 | Bistable electromagnetic-piezoelectric mixed vibration energy collector and self-powered sensing system |
| CN115603541A (en) * | 2022-12-01 | 2023-01-13 | 东北林业大学（Cn） | Tree swinging power generation device |
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