CN109274289A - A kind of piezoelectric energy trapping device and method that can automatically adjust resonant frequency and bandwidth - Google Patents
A kind of piezoelectric energy trapping device and method that can automatically adjust resonant frequency and bandwidth Download PDFInfo
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- CN109274289A CN109274289A CN201811490567.6A CN201811490567A CN109274289A CN 109274289 A CN109274289 A CN 109274289A CN 201811490567 A CN201811490567 A CN 201811490567A CN 109274289 A CN109274289 A CN 109274289A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007613 environmental effect Effects 0.000 claims abstract description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims description 11
- 230000011664 signaling Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000012512 characterization method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000013016 damping Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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
- H02N2/188—Vibration harvesters adapted for resonant operation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a kind of piezoelectric energy trapping devices and method for automatically adjusting resonant frequency and bandwidth, it is characterized in that piezoelectric patches setting is on a cantilever beam, cantilever beam is mounted on fixed pedestal, micromotor is installed on a cantilever beam by electric machine support, the axis connection screw rod of micromotor can simultaneously drive screw rod to rotate, the other end of screw rod is also secured on cantilever beam by screw rod bracket, mass block is threadably mounted on screw rod by corresponding with screw rod, when screw rod rotation, mass block can be moved along screw rod direction.Circuit system plate connects piezoelectric patches and carries out vibrational energy capture, and judge whether environmental vibration frequency matches with the intrinsic frequency of piezoelectric energy trapping device from piezoelectric patches output signal, by the positive and negative rotation for controlling micromotor, realize that the position of the end mass block of cantilever beam is adjusted, mass block is adjusted at a distance from motor, the automatic adjustment of piezoelectric energy trapping device first order resonance frequency point, single order and two overlapping of order band bandwidths may be implemented.
Description
Technical field
The invention belongs to piezoelectric vibration energies to capture technical field, and in particular to a kind of automatic adjustment resonant frequency and bandwidth
Piezoelectric energy trapping device and method.
Background technique
As wireless sensor network is widely used in real life, power consumption is also lower and lower.This makes
There is provided energy using the energy in environment for radio sensing network node becomes possible, and at present there is utilizable energy in environment
Luminous energy, thermal energy, vibrational energy etc., wherein vibrational energy is widely present in our living environments, such as the movement of human body, the vibration of vehicle
Etc..Researcher has begun working on the vibrational energy in acquisition environment and is translated into the technology of electric energy thus, is nothing
Line sensing network node provides electric energy.
The mode of the ambient vibration energy acquisition of most study has electromagnetic type, piezoelectric type etc. at present, wherein piezoelectric cantilever
The PZT (piezoelectric transducer) of formula due to its structure is simple, without electromagnetic interference, moving component is few the advantages that gain great popularity.But current pressure
Electric cantilever beam structure general under its resonant frequency, could export maximum power.When environmental vibration frequency offsets by piezoelectricity
After the resonant frequency of cantilever beam, the electric energy power of output will rapid decrease.The resonant frequency of piezoelectric cantilever is main and cantilever
The size of beam, coefficient of elasticity, mass block weight, mass block the relating to parameters system such as position.Therefore Many researchers propose respectively
The method that kind adjusts piezoelectric cantilever resonant frequency.Such as patent: 201721600074.4, it is covered in the upper surface of cantilever beam substrate
There is piezoelectric chip, carry mass block in the upper surface of piezoelectric chip end, has hollow groove in the lower surface of cantilever beam substrate
Plate, wherein being equipped with partially liq.The structure is conducive to the position for smoothly adjusting piezoelectric cantilever mass centre, and basic herein
On, obtain the acquisition of wideband energy.For another example patent: 201410613453.1 to disclose a kind of wideband with movable quality loop with pressure
Electric-type vibrational energy acquisition device, comprising: spring beam, piezoelectric element, slideway, limited block and movable quality loop, the elasticity
Beam is hanging, and both ends of the surface are fixed, and the piezoelectric element is tightly attached to spring beam surface and the fixing end close to spring beam, the slideway
Positioned at the middle position of spring beam, the limited block is located at slideway both ends and is fixed on spring beam, the movable quality loop
Across slideway and spring beam and it is freely hanging on slideway.The invention device, under the action of external vibration using movable quality loop
The motor behaviors such as the sliding and rotation of generation come increase vibrational energy acquisition frequency bandwidth, realize piezoelectric type vibration energy acquisition
The broadband operation of device.But these piezoelectric vibration energy acquisition devices are not the resonance frequencies of actively accurate adjusting cantilever beam
Rate and fast implement high efficiency energy capture.
The invention discloses a kind of piezoelectric energy trapping devices and method for automatically adjusting resonant frequency and bandwidth, it is characterised in that
Piezoelectric patches is arranged on a cantilever beam, and cantilever beam is mounted on fixed pedestal, and micromotor is mounted on cantilever beam by electric machine support
On, the axis connection screw rod of micromotor can simultaneously drive screw rod to rotate, and the other end of screw rod is also secured at outstanding by screw rod bracket
On arm beam, mass block is threadably mounted on screw rod by corresponding with screw rod, and when screw rod rotation, mass block can be along
Screw rod direction is mobile.Circuit system plate connects piezoelectric patches by piezoelectric patches conducting wire and carries out vibrational energy capture, and from piezoelectric patches
Output signal judges whether environmental vibration frequency matches with the intrinsic frequency of piezoelectric energy trapping device.Circuit system plate is led by motor
Line connects micromotor, by the positive and negative rotation of control micromotor, realizes that the position of the end mass block of cantilever beam is adjusted, by
In micromotor, there are quality, and piezoelectric cantilever can also have a corresponding second-order resonance Frequency point, by adjusting mass block
At a distance from motor, the automatic tune of the bandwidth of piezoelectric energy trapping device first order resonance frequency point, single order and second order frequency band may be implemented
Section.
Summary of the invention
The purpose of the present invention: a kind of piezoelectric energy trapping device and method automatically adjusting resonant frequency and bandwidth passes through piezoelectricity
Cantilever beam structure carries out vibrational energy capture, and judges environmental vibration frequency and piezoelectric energy trapping device from piezoelectric patches output signal
Intrinsic frequency whether match, by control micromotor positive and negative rotation, realize the position tune of the end mass block of cantilever beam
Section, to realize the automatic adjustment of piezoelectric energy trapping device resonant frequency and bandwidth.
To realize the present invention, the technical solution adopted is that: it is a kind of automatic adjustment resonant frequency and bandwidth piezoelectric energy-capturing dress
It sets and method, piezoelectric patches (3) is arranged on cantilever beam (2), cantilever beam (2) is mounted on fixed pedestal (1), micromotor (4)
It is mounted on cantilever beam (2) by electric machine support (5), the axis connection screw rod (6) of micromotor (4) simultaneously can drive screw rod (6)
Rotation, the other end of screw rod (6) are also secured on cantilever beam (2) by screw rod bracket (8), mass block (7) by with screw rod (6)
Corresponding to be threadably mounted on screw rod (6), when screw rod (6) rotation, mass block (7) can be along the direction of screw rod (6)
Mobile, circuit system plate (10) carries out vibrational energy capture by piezoelectric patches conducting wire (11) connection piezoelectric patches (3), and from piezoelectricity
Piece (3) output signal judges whether environmental vibration frequency matches with the intrinsic frequency of piezoelectric energy trapping device, circuit system plate (10)
Micromotor (4) are connected by motor wire (9), by controlling the positive and negative rotation of micromotor (4), realize cantilever beam (2)
The position of end mass block (7) is adjusted, to realize the automatic adjustment of piezoelectric energy trapping device resonant frequency and bandwidth.Circuit system
Plate (10) include switching switch (12), single-chip microcontroller (13), short-circuit signal processing circuit (14), open circuit signaling processing circuit (15),
Acquisition interface circuit (16), power storage (17), voltage regulator circuit (18), driving circuit (19), single-chip microcontroller (13) control
Switching switch (12) switches over piezoelectric patches (3) output loading, can be switched to short-circuit signal processing circuit (14) respectively, open
Road signal processing circuit (15), acquisition interface circuit (16) pass through output of acquisition piezoelectric patches (3) under short circuit and open-circuit condition
Amplitude, frequency and the phase variation characterisation of voltage signal, judge automatically whether current mass block (7) position should be adjusted
Section controls the positive and negative rotation of micromotor (4), adjusts piezoelectric energy trapping device resonant frequency and bandwidth by mass block (7) position, when
After adjusting, piezoelectric patches (3) is switched to acquisition interface circuit (16) by single-chip microcontroller (13) control switching switch (12), is handed over
It circulates after direct current conversion and processing, is input to power storage (17), the power storage (17) is connected to voltage regulator circuit (18)
Stable energy output is obtained afterwards, while the power supply of integrated circuit being provided.
Beneficial effects of the present invention:
1. circuit system plate by switching over to the load that piezoelectric patches exports, is become by the amplitude, frequency and phase of its output
Changing characteristic may determine that whether system should adjust the position of mass block, realize full automatic control.
2. piezoelectric cantilever can also have a corresponding second-order resonance Frequency point, adjust since micromotor is there are quality
Mass block is saved at a distance from motor, the bandwidth of piezoelectric energy trapping device first order resonance frequency point, single order and second order frequency band may be implemented
Automatic adjustment.
3. the screw structure used, can accurately adjust the position of mass block, to realize the accurate tune of resonant frequency point
Section.
4. piezoelectric energy trapping device can fully achieve self-powered after vibration amplitude is greater than a certain threshold value.
Detailed description of the invention
Fig. 1 is the scheme of installation of the piezoelectric energy trapping device of a kind of automatic adjustment resonant frequency of the present invention and bandwidth；
Fig. 2 is the internal structure of circuit system plate of the present invention and realizes that piezoelectric patches detects and the block diagram of motor control automatically；
Wherein: 1. fixed pedestals, 2. cantilever beams, 3. piezoelectric patches, 4. micromotors, 5. electric machine supports, 6. screw rods, 7. mass blocks,
8. screw rod bracket, 9. motor wires, 10. circuit system plates, 11. piezoelectric patches conducting wires, 12. switching switches, 13. single-chip microcontrollers, 14. short
Road signal processing circuit, 15. open circuit signaling processing circuits, 16. acquisition interface circuits, 17. power storages, 18. voltage regulator circuits,
19. driving circuit.
Specific embodiment
A kind of piezoelectric energy trapping device and method automatically adjusting resonant frequency and bandwidth, as shown in Figure 1 comprising fixed base
Seat (1), cantilever beam (2), piezoelectric patches (3), micromotor (4), electric machine support (5), screw rod (6), mass block (7), screw rod bracket
(8), motor wire (9), circuit system plate (10), piezoelectric patches conducting wire (11).
Working principle: piezoelectric patches (3) is arranged on cantilever beam (2), and cantilever beam (2) is mounted on fixed pedestal (1), described
Micromotor (4) be mounted on cantilever beam (2) by electric machine support (5), the axis connection screw rod (6) of micromotor (4) simultaneously can
To drive screw rod (6) to rotate, the other end of screw rod (6) is also secured on cantilever beam (2) by screw rod bracket (8), mass block (7)
It is threadably mounted on screw rod (6) by corresponding with screw rod (6), when screw rod (6) rotation, mass block (7) can be along
The direction of screw rod (6) is mobile, and circuit system plate (10) carries out vibrational energy prisoner by piezoelectric patches conducting wire (11) connection piezoelectric patches (3)
It obtains, and judges whether environmental vibration frequency matches with the intrinsic frequency of piezoelectric energy trapping device from piezoelectric patches (3) output signal, electricity
Road system board (10) is realized by motor wire (9) connection micromotor (4) by controlling the positive and negative rotation of micromotor (4)
The position of the end mass block (7) of cantilever beam (2) is adjusted, and since micromotor is there are quality, piezoelectric cantilever can also have one
A corresponding second-order resonance Frequency point adjusts mass block at a distance from motor, and piezoelectric energy trapping device first order resonant frequency may be implemented
The automatic adjustment of the bandwidth of rate point, single order and second order frequency band.
Preferably, piezoelectric patches (3) is at least arranged one, and the piezoelectric patches (3) described at least one and circuit system plate phase
Connection.
Preferably, the electric machine support (5) and screw rod bracket (8) are that light material is made.
Preferably, the micromotor (4) can use micro-step motor, hollow-cup motor or miniature direct current
Motor.
Preferably, the mass block (7) is made of the larger material of density, in order to reduce the damping with screw rod, is reduced
Other weight mass blocks can be increased in the top surface of T-type structure using the mass block of T-type structure with the thickness of screw rod vertical plane.
As shown in Fig. 2, the circuit system plate (10) includes switching switch (12), single-chip microcontroller (13), at short-circuit signal
It manages circuit (14), open circuit signaling processing circuit (15), acquisition interface circuit (16), power storage (17), voltage regulator circuit (18), drive
Dynamic circuit (19).
Working principle and method: the switching switch (12) of single-chip microcontroller (13) control cuts piezoelectric patches (3) output loading
It changes, short-circuit signal processing circuit (14), open circuit signaling processing circuit (15), acquisition interface circuit (16) can be switched to respectively,
By amplitude, frequency and the phase variation characterisation of output voltage signal of acquisition piezoelectric patches (3) under short circuit and open-circuit condition, certainly
It is dynamic to judge whether current mass block (7) position be adjusted, the positive and negative rotation of micromotor (4) is controlled, by adjusting matter
The position of gauge block (7) adjusts piezoelectric energy trapping device resonant frequency and bandwidth, and after adjusting, single-chip microcontroller (13) control switching is opened
It closes (12) and piezoelectric patches (3) is switched to acquisition interface circuit (16), carry out being input to electric energy after exchange turns direct current conversion and processing
It stores (17), the power storage (17) obtains stable energy output after being connected to voltage regulator circuit (18), while providing whole
The power supply of body circuit.
Preferably, acquisition interface circuit (16) can be using full bridge rectifier, synchronous charge-extraction (SECE) circuit, simultaneously
In conjunction with step switched inductors (P-SSHI) interface circuit or series connection synchronous switch inductance (S-SSHI) interface circuit.
Preferably, the power storage (17) can use lithium battery or farad capacitor.
It should be noted that above-mentioned each technical characteristic continues to be combined with each other, the various embodiments not being enumerated above are formed,
It is accordingly to be regarded as the range of description of the invention record；Also, for those of ordinary skills, it can add according to the above description
To improve or convert, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (7)
1. a kind of piezoelectric energy trapping device and method for automatically adjusting resonant frequency and bandwidth comprising fixed pedestal (1), cantilever beam
(2), piezoelectric patches (3), micromotor (4), electric machine support (5), screw rod (6), mass block (7), screw rod bracket (8), motor wire
(9), circuit system plate (10), piezoelectric patches conducting wire (11), it is characterised in that the piezoelectric patches (3) is arranged on cantilever beam (2),
Cantilever beam (2) is mounted on fixed pedestal (1), and the micromotor (4) is mounted on cantilever beam (2) by electric machine support (5)
On, the axis connection screw rod (6) of micromotor (4) simultaneously can drive screw rod (6) to rotate, and the other end of screw rod (6) passes through screw rod branch
Frame (8) is also secured on cantilever beam (2), and mass block (7) is threadably mounted on screw rod (6) by corresponding with screw rod (6), works as silk
When bar (6) rotates, mass block (7) can be mobile along the direction of screw rod (6), and circuit system plate (10) is led by piezoelectric patches
Line (11) connect piezoelectric patches (3) carry out vibrational energy capture, and from piezoelectric patches (3) output signal judge environmental vibration frequency and
Whether the intrinsic frequency of piezoelectric energy trapping device matches, and circuit system plate (10) connects micromotor (4) by motor wire (9),
By controlling the positive and negative rotation of micromotor (4), realize that the position of the end mass block (7) of cantilever beam (2) is adjusted, to realize
The automatic adjustment of piezoelectric energy trapping device resonant frequency and bandwidth.
2. a kind of piezoelectric energy trapping device and method for automatically adjusting resonant frequency and bandwidth according to claim 1, special
Sign is that the circuit system plate (10) includes switching switch (12), single-chip microcontroller (13), short-circuit signal processing circuit (14), opens
Road signal processing circuit (15), acquisition interface circuit (16), power storage (17), voltage regulator circuit (18), driving circuit (19), institute
The switching switch (12) for stating single-chip microcontroller (13) control switches over piezoelectric patches (3) output loading, can be switched to short circuit respectively
Signal processing circuit (14), open circuit signaling processing circuit (15), acquisition interface circuit (16), by acquisition piezoelectric patches (3) short
Amplitude, frequency and the phase variation characterisation of output voltage signal under road and open-circuit condition judge automatically current mass block (7)
Whether position should be adjusted, and control the positive and negative rotation of micromotor (4), and the position by adjusting mass block (7) adjusts piezoelectricity
Prisoner's energy device resonant frequency and bandwidth, after adjusting, single-chip microcontroller (13) control switching switch (12) switches piezoelectric patches (3)
To acquisition interface circuit (16), carry out being input to power storage (17), the electric energy is deposited after exchange turns direct current conversion and processing
Storage (17) obtains stable energy output after being connected to voltage regulator circuit (18), while providing the power supply of integrated circuit.
3. a kind of piezoelectric energy trapping device and method for automatically adjusting resonant frequency and bandwidth according to claim 2, special
Sign is that the acquisition interface circuit (16) can be using full bridge rectifier, synchronous charge-extraction (SECE) circuit, parallel connection
Synchronous switch inductance (P-SSHI) interface circuit or series connection synchronous switch inductance (S-SSHI) interface circuit, the electric energy are deposited
Storage (17) can use lithium battery or farad capacitor.
4. a kind of piezoelectric energy trapping device and method for automatically adjusting resonant frequency and bandwidth according to claim 1, special
Sign is that the piezoelectric patches (3) is at least arranged one, and the piezoelectric patches (3) described at least one is connected with circuit system plate
It connects.
5. a kind of piezoelectric energy trapping device and method for automatically adjusting resonant frequency and bandwidth according to claim 1, special
Sign is that the electric machine support (5) and screw rod bracket (8) are that light material is made.
6. a kind of piezoelectric energy trapping device and method for automatically adjusting resonant frequency and bandwidth according to claim 1, special
Sign is that the micromotor (4) can use micro-step motor, hollow-cup motor or miniature direct current generator.
7. a kind of piezoelectric energy trapping device and method for automatically adjusting resonant frequency and bandwidth according to claim 1, special
Sign is that the mass block (7) is made of the larger material of density, in order to reduce the damping with screw rod, reduces vertical with screw rod
The thickness in face can increase other weight mass blocks in the top surface of T-type structure using the mass block of T-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490567.6A CN109274289A (en) | 2018-12-07 | 2018-12-07 | A kind of piezoelectric energy trapping device and method that can automatically adjust resonant frequency and bandwidth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490567.6A CN109274289A (en) | 2018-12-07 | 2018-12-07 | A kind of piezoelectric energy trapping device and method that can automatically adjust resonant frequency and bandwidth |
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| CN109274289A true CN109274289A (en) | 2019-01-25 |
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ID=65187128
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| CN201811490567.6A Pending CN109274289A (en) | 2018-12-07 | 2018-12-07 | A kind of piezoelectric energy trapping device and method that can automatically adjust resonant frequency and bandwidth |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176874A (en) * | 2019-06-05 | 2019-08-27 | 哈尔滨工业大学 | A kind of flutter of aerofoil is coupled with vortex-induced vibration and tunable piezoelectric harvester |
| CN110274679A (en) * | 2019-06-25 | 2019-09-24 | 中交一公局桥隧工程有限公司 | A kind of vibration prior-warning device |
| CN110567573A (en) * | 2019-09-26 | 2019-12-13 | 成都凯天电子股份有限公司 | Method for outputting measured exciting force signal of piezoelectric vibration sensor with high sensitivity |
| CN111024125A (en) * | 2019-12-26 | 2020-04-17 | 北京工业大学 | Experimental device for self-adaptive frequency-modulation piezoelectric gyroscope |
| CN111123019A (en) * | 2020-01-14 | 2020-05-08 | 安徽理工大学 | Multifunctional rotary magnetic excitation vibration energy harvesting experiment table |
| CN111769757A (en) * | 2020-05-19 | 2020-10-13 | 中国电子科技集团公司第五十四研究所 | Cantilever beam oscillator natural frequency adjustable piezoelectricity power generation structure |
| CN112595408A (en) * | 2020-12-10 | 2021-04-02 | 四川度飞科技有限责任公司 | Novel dynamic resonance sensing device |
| CN112886864A (en) * | 2021-02-03 | 2021-06-01 | 南京理工大学 | C-type turbulence adjustable series-connection fluid energy piezoelectric energy harvester |
| CN114039510A (en) * | 2021-11-02 | 2022-02-11 | 上海交通大学 | Multi-direction wide-frequency piezoelectric energy collecting device |
| CN114553051A (en) * | 2022-03-02 | 2022-05-27 | 哈尔滨工业大学 | Lever type energy capture device based on inertia principle |
| CN114831381A (en) * | 2022-06-09 | 2022-08-02 | 广州大学 | Piezoelectric sensing power generation device and self-generating sports shoes |
| EP4130692A4 (en) * | 2021-05-25 | 2023-11-01 | Gentle Energy Corp. | Device and method for designing amplifier |
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2018
- 2018-12-07 CN CN201811490567.6A patent/CN109274289A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176874A (en) * | 2019-06-05 | 2019-08-27 | 哈尔滨工业大学 | A kind of flutter of aerofoil is coupled with vortex-induced vibration and tunable piezoelectric harvester |
| CN110274679B (en) * | 2019-06-25 | 2024-05-28 | 中交一公局桥隧工程有限公司 | Vibration early warning device |
| CN110274679A (en) * | 2019-06-25 | 2019-09-24 | 中交一公局桥隧工程有限公司 | A kind of vibration prior-warning device |
| CN110567573A (en) * | 2019-09-26 | 2019-12-13 | 成都凯天电子股份有限公司 | Method for outputting measured exciting force signal of piezoelectric vibration sensor with high sensitivity |
| CN111024125A (en) * | 2019-12-26 | 2020-04-17 | 北京工业大学 | Experimental device for self-adaptive frequency-modulation piezoelectric gyroscope |
| CN111123019A (en) * | 2020-01-14 | 2020-05-08 | 安徽理工大学 | Multifunctional rotary magnetic excitation vibration energy harvesting experiment table |
| CN111769757A (en) * | 2020-05-19 | 2020-10-13 | 中国电子科技集团公司第五十四研究所 | Cantilever beam oscillator natural frequency adjustable piezoelectricity power generation structure |
| CN112595408A (en) * | 2020-12-10 | 2021-04-02 | 四川度飞科技有限责任公司 | Novel dynamic resonance sensing device |
| CN112886864A (en) * | 2021-02-03 | 2021-06-01 | 南京理工大学 | C-type turbulence adjustable series-connection fluid energy piezoelectric energy harvester |
| EP4130692A4 (en) * | 2021-05-25 | 2023-11-01 | Gentle Energy Corp. | Device and method for designing amplifier |
| CN114039510A (en) * | 2021-11-02 | 2022-02-11 | 上海交通大学 | Multi-direction wide-frequency piezoelectric energy collecting device |
| CN114039510B (en) * | 2021-11-02 | 2024-02-06 | 上海交通大学 | Multi-directional broadband piezoelectric energy collection device |
| CN114553051A (en) * | 2022-03-02 | 2022-05-27 | 哈尔滨工业大学 | Lever type energy capture device based on inertia principle |
| CN114831381A (en) * | 2022-06-09 | 2022-08-02 | 广州大学 | Piezoelectric sensing power generation device and self-generating sports shoes |
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