CN109889082A - Vibration based on friction generator-magnetic field energy mixed collection device - Google Patents
Vibration based on friction generator-magnetic field energy mixed collection device Download PDFInfo
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- CN109889082A CN109889082A CN201910316558.3A CN201910316558A CN109889082A CN 109889082 A CN109889082 A CN 109889082A CN 201910316558 A CN201910316558 A CN 201910316558A CN 109889082 A CN109889082 A CN 109889082A
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Abstract
The vibration based on friction generator that the invention discloses a kind of-magnetic field energy mixed collection device, including bracket component, cantilever beam assembly and friction nanometer generating component, wherein bracket component includes column and crossbeam, and one end and the column of crossbeam are fixed；Cantilever beam assembly includes cantilever beam and permanent magnet, and cantilever beam is arranged in the lower section of crossbeam and one end of cantilever beam and is fixed on column, and permanent magnet is arranged on the other end lower surface of cantilever beam；Friction nanometer generating component includes powering on pole piece, lower electrode slice and polymer insulation piece, power on the lower section that the other end of crossbeam is arranged in pole piece, the top of the other end of cantilever beam and opposite with pole piece is powered on is arranged in lower electrode slice, polymer insulation piece is fixed on the upper surface of lower electrode slice, polymer insulation piece and power between pole piece have gap.The device can be collected simultaneously vibration and magnetic field energy in environment, have the characteristics that structure is simple, labor aptitude is strong, power density is high.
Description
Technical field
The present invention relates to triboelectricity technical field more particularly to a kind of vibration-magnetic field energys based on friction generator
Mixed collection device.
Background technique
The wireless sensor network of rapid development has in terms of environmental monitoring, monitoring structural health conditions, implantable medical
Have broad application prospects, for the main bottleneck of these applications in the self-supporting energy, this demand has expedited the emergence of the production of energy collection technology
Raw and development.Friction nanometer power generator has been invented by professor Wang Zhonglin research team, Georgia Institute of Technology within 2012, can utilize
Small mechanical energy is converted to electric energy by the coupling of triboelectrification effect and electrostatic induction effect, the energy based on principle design
Collection device can convert electric energy for the various mechanical energy slatterned originally in production and living, have broad application prospects.
For a long time, in order to collect vibration and magnetic field energy ubiquitous in environment, there are these energy of a large amount of collections
The device of amount, but these devices are all inevitably present that structure is complicated, capacity usage ratio is low, power density is small, energy is received
Collect the problems such as type is single.2008, the A.Erturk in the U.S. et al. proposed the beam type vibrational energy based on piezoelectric effect
Collector is measured, but the problem is that the device only could be defeated when cantilever beam is in environmental vibration frequency equal to its resonance frequency
More considerable voltage out, energy acquisition performance is poor under the vibration environment of remaining frequency, and the collector be only capable of collecting it is single
Vibrational energy.The electricity energy harvester proposed at present is many kinds of, this energy acquisition for being only capable of collecting single energy
Device is commonplace, for example is only capable of collecting the energy collecting device in magnetic field.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, one object of the present invention
It is to propose a kind of vibration based on friction generator-magnetic field energy mixed collection device, the vibration that can be collected simultaneously in environment
Dynamic and magnetic field energy, structure is simple, labor aptitude is strong, power density is high.
Vibration according to an embodiment of the present invention based on friction generator-magnetic field energy mixed collection device, comprising:
Bracket component, the bracket component include column and crossbeam, and one end of the crossbeam is fixed with the column；
Cantilever beam assembly, the cantilever beam assembly include cantilever beam and permanent magnet, and the cantilever beam is arranged in the crossbeam
Lower section and one end of the cantilever beam be fixed on the column, the permanent magnet is arranged under the other end of the cantilever beam
On surface；
Rub nanometer generating component, and the friction nanometer generating component is exhausted including powering on pole piece, lower electrode slice and polymer
The cantilever beam is arranged in embolium, the lower section for powering on pole piece and the other end of the crossbeam being arranged in, the lower electrode slice
The top of the other end and power on that pole piece is opposite with described, the polymer insulation piece is fixed on the upper surface of the lower electrode slice
On, the polymer insulation piece and described power on have gap between pole piece.
Vibration according to an embodiment of the present invention based on friction nanometer power generator-magnetic field energy mixed collection device has such as
Lower advantage: the first, the narrow disadvantage of conventional vibration energy collecting device working band is overcome, the work of vibration energy collector has been widened
Make frequency band；The second, vibration and magnetic field energy can be collected simultaneously, can still be played under high frequency or low-frequency vibration environment compared with
Good performance, the collection of magnetic field energy improve efficiency of energy collection and output voltage；The energy hybrid collection device structure letter
Single, realization is relatively easy to；Third, the energy hybrid collection device are easy to modularization, can carry out parallel connection using multiple devices,
Working frequency is further widened, output electricity is improved；4th, experimental result surface, relative to existing based on piezoelectric effect
Beam type vibration energy collector, power density are big.
According to one embodiment of present invention, the column includes column ontology and cushion block, and the cushion block is arranged described
The lower section of column ontology simultaneously supports the column ontology, and one end of the cantilever beam is fixed on the column ontology and the cushion block
Between.
According to one embodiment of present invention, the friction nanometer generating component further includes block, and the block is vertically worn
It is located on the other end of the crossbeam, the lower section for powering on pole piece and the block being set.
Further embodiment according to the present invention, the block can up and down adjustment, with adjust the polymer insulation piece with
The gap powered between pole piece.
The material of further embodiment according to the present invention, the bracket component and the block is duralumin.
Further embodiment according to the present invention, the friction nanometer generating component further include upper cushion and lower buffering
Pad, the upper cushion setting power between pole piece and the block described, and the lower cushion is arranged in the lower electrode
Between piece and the cantilever beam.
According to one embodiment of present invention, the material of the cantilever beam uses nickel.
According to one embodiment of present invention, the material of the polymer insulation piece uses polytetrafluoroethylene (PTFE), polyimides
One of with polyvinyl chloride.
According to one embodiment of present invention, the one class resonant frequency of the cantilever beam is consistent with environment alternating magnetic field.
The quality of further embodiment according to the present invention, the size of the cantilever beam and the permanent magnet is as follows
It is calculated by software for calculation MATLAB:
According to non-individual body Theory of Vibration, the single order equivalent lumped mass mb and single order equivalent elastic coefficient kb of cantilever beam are obtained
It is as follows:
Wherein ρ indicate cantilever material density, A=bh indicate beam cross-sectional area (width and thickness of beam be respectively b and
H), E is elasticity modulus, J=bh3/ 12 indicate beam section the moment of inertia, ψ "1Expression asks second order to lead x.One first order mode letter of cantilever beam
Number ψ1(x) it can be expressed as follows:
Wherein β1L=1.875104.
If the quality of permanent magnet is mm, and assume that it acts on the free end of cantilever beam.The lower electricity of friction power generation component
Pole piece is made of light material, and quality can be ignored, then the equivalent mass of whole system may be expressed as:
ms=mb+mm(ψ″1(L))2
According to the definition of intrinsic frequency, first natural frequency function can be obtained are as follows:
In the density and elasticity modulus of the material of known cantilever beam, is determined and grown according to energy hybrid collection device actual size
After degree and width, ω is enabled1=50Hz can calculate the thickness of a variety of cantilever beams and the combination of permanent magnetism weight of iron.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is that the vibration based on friction generator-magnetic field energy mixed collection device work of the embodiment of the present invention is former
Reason figure.
Fig. 2 is the vibration based on friction generator-magnetic field energy mixed collection device main view of the embodiment of the present invention.
Fig. 3 is the enlarged diagram in Fig. 2 at A.
Fig. 4 is the vibration based on friction generator-magnetic field energy mixed collection device top view of the embodiment of the present invention.
Fig. 5 is one work of the vibration based on friction generator-magnetic field energy mixed collection device of the embodiment of the present invention
Make status diagram.
Fig. 6 is the vibration based on friction generator-magnetic field energy mixed collection device cantilever beam of the embodiment of the present invention
The relationship between quality figure of size and permanent magnet.
Appended drawing reference:
Energy hybrid collection device 1000
112 fixing screws of bracket component column 11 column ontology, 111 cushion block, 113 crossbeam 12
2 permanent magnet of cantilever beam assembly, 21 cantilever beam 22
Friction nanometer generating component 3 powers on 31 block of pole piece, 33 lock-screw, 331 upper cushion 32
Lower 35 lower cushion 36 of electrode slice of polymer insulation piece 34
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
Vibration-magnetic field energy according to an embodiment of the present invention based on friction generator is described below with reference to Fig. 1 to Fig. 6
Mixed collection device 1000.
As shown in Figures 1 to 6, the vibration according to an embodiment of the present invention based on friction generator-magnetic field energy mixing is received
Acquisition means 1000, including bracket component 1, cantilever beam assembly 2 and friction nanometer generating component 3.Bracket component 1 includes 11 He of column
Crossbeam 12, one end of crossbeam 12 and column 11 are fixed.Cantilever beam assembly 2 includes cantilever beam 22 and permanent magnet 21, and cantilever beam 22 is set
It sets in the lower section of crossbeam 12 and one end of cantilever beam 22 is fixed on column 11, the other end of cantilever beam 22 is arranged in permanent magnet 21
On lower surface.Friction nanometer generating component 3 includes powering on pole piece 31, lower electrode slice 35 and polymer insulation piece 34, powers on pole piece
31 are arranged in the lower section of the other end of crossbeam 12, and the top of the other end of cantilever beam 22 and and top electrode is arranged in lower electrode slice 35
Piece 31 is opposite, and polymer insulation piece 34 is fixed on the upper surface of lower electrode slice 35, polymer insulation piece 34 and powers on pole piece 31
Between have gap.
Specifically, bracket component 1 includes column 11 and crossbeam 12, one end of crossbeam 12 and column 11 are fixed.It can manage
The column 11 of Xie Cheng, bracket component 1 can be vertically arranged, and crossbeam 12 can be arranged with general horizontal direction, one end of crossbeam 12 with
Column 11 is fixed, to make crossbeam 12 in cantilever position, cantilever beam 22 is conveniently installed on column 11, while conveniently in crossbeam 12
The other end at install electrode slice 31.
Cantilever beam 22 is arranged in the lower section of crossbeam 12 and one end of cantilever beam 22 and is fixed on column 11, and permanent magnet 21 is arranged
On the other end lower surface of cantilever beam 22.That is, cantilever beam 22 can be located at crossbeam 12 lower section, the one of cantilever beam 22
End is fixed with column 11, and the other end of cantilever beam 22 is the free end with the other end face of crossbeam 12, can be square in free end
Lower electrode slice 35 is just installed.When vertical tremor occurs for cantilever beam 22, lower electrode slice 35 can be driven to pump.Cantilever
Permanent magnet 21 is set on another lower surface of beam 22, on the one hand can increase the mass inertia of lower electrode slice 35, is conducive to increase vibration
Energy is collected；On the other hand, permanent magnet 21 can bear magnetic field force under the action of environment alternating magnetic field, and then drive lower electricity
The reciprocating motion of pole piece 35, to realize the purpose for collecting environmental magnetic field energy.
The cross sectional shape of cantilever beam 22 can be rectangle or trapezoidal, to conveniently power on the peace of pole piece 31 and permanent magnet 21
Dress.Cantilever beam 22 can be made of the preferable material of toughness, be vibrated up and down to be conducive to cantilever beam 22.
Permanent magnet 21 can use rare-earth permanent magnet 21, can drive cantilever in the effect by environment alternating magnetic field power
The generation of beam 22 is up and down reciprocatingly vibrated.
Friction nanometer generating component 3 includes powering on pole piece 31, lower electrode slice 35 and polymer insulation piece 34, powers on pole piece 31
Copper foil can be used with lower electrode slice 35, polymer insulation piece 34 can use polytetrafluoroethylene film piece, power on pole piece 31
The lower section of the other end of crossbeam 12 is set, lower electrode slice 35 be arranged in the top of the other end of cantilever beam 22 and with power on pole piece
31 is opposite, and polymer insulation piece 34 is fixed on the upper surface of lower electrode slice 35, for example, polymer insulation piece 34 can be by leading
Electric glue on lower electrode slice 35, polymer insulation piece 34 and power between pole piece 31 have gap.As a result, when cantilever beam 22
Occur when the vibrations are up and down, to drive that polymer insulation piece 34 is synchronous with lower electrode slice 35 pumps, polymer insulation piece
34 with the close contact for powering on 31 generating period of pole piece and separate, so that the mechanical energy that cantilever beam 22 vibrates is changed into electricity
Energy.
Specific working principle is as shown in Figure 1, in the initial state, in the initial state, polymer insulation piece 34 with it is upper
Gap between electrode slice 31 is d, does not have potential difference between upper and lower two panels copper metal electrode, when the up-down vibration of cantilever beam 22
When, it drives the synchronization of the components such as the polymer insulation piece 34, the lower electrode that are connected on cantilever beam 22 to pump, leads
It causes the polymer insulation piece 34 of lower section and powers on the close contact of pole piece 31, due to triboelectrification effect, two kinds of material surfaces can be sent out
Raw electric charge transfer powers on 31 surface of pole piece because polymer insulation piece 34 is easier to obtain electronics compared to pole piece 31 is powered on
Electrons are transferred to the surface of polymer insulation piece 34, thus keep the surface of polymer insulation piece 34 negatively charged, top electrode table
Face is positively charged.Since the insulating properties of polymer insulation piece 34 is fine, thus the negative electrical charge on 34 surface of polymer insulation piece can be with
It keeps for quite a long time.Again because two kinds of equivalent xenogenesis charges are in approximately the same plane, thus at this time between upper/lower electrode
Potential difference is still zero.Once polymer insulation piece 34 is separated with pole piece 31 is powered on, pole piece 31 and lower electrode slice 35 are powered on
Potential difference can be generated between surface, potential difference can drive electronics to power on pole piece 31 from lower electrode slice 35 flow direction through external circuit, by
This can generate positive electric current in external circuit, and the current direction is from pole piece 31 is powered on to lower electrode slice 35, electric current meeting one
Directly exist up to whole system reaches state of electrostatic equilibrium again.When polymer insulation piece 34 is again close to power on pole piece 31,
The potential difference powered between pole piece 31 and lower electrode slice 35 is gradually reduced, and electrons flow back to lower electrode slice 35 from pole piece 31 is powered on,
To generate a reversed output electric current.When polymer insulation piece 34 and when powering on 31 surface of pole piece and completely attaching to again, on
Potential difference between electrode slice 31 and lower electrode slice 35 is zero, and exporting electric current at this time is zero, and here it is friction nanometer generating components 3
A complete power generation period.
Vibration according to an embodiment of the present invention based on friction generator-magnetic field energy mixed collection device 1000, work
It is adaptable.If the device is in the only environment of vibration, the vibration that vibration source generates will will drive cantilever beam 22
Vibration, and then polymer insulation piece 34 and lower electrode slice 35 is driven to be in contact-separate with pole piece 31 is powered on, composition can power transformation
Container powers on and generates potential difference between pole piece 31 and lower electrode slice 35 and generate transient current in external circuit.If the device
When in magnetic field and vibrating in simultaneous environment, effect of the permanent magnet 21 by environment alternating magnetic field, it will further plus
Acute cantilever pumps, and so as to increase the amplitude of cantilever, increases the hair of the energy hybrid collection device 1000
Electricity.
Vibration according to an embodiment of the present invention based on friction nanometer power generator-magnetic field energy mixed collection device 1000 has
It has the following advantages: the first, overcoming the narrow disadvantage of conventional vibration energy collecting device working band, widened vibration energy collector
Working band；The second, it can be collected simultaneously vibration and magnetic field energy, can still be sent out under high frequency or low-frequency vibration environment
Preferable performance is waved, the collection of magnetic field energy improves efficiency of energy collection and output voltage；The energy hybrid collection device
1000 structures are simple, and realization is relatively easy to；Third, the energy hybrid collection device 1000 are easy to modularization, can use multiple
The device carries out parallel connection, further widens working frequency, improves output electricity；4th, the experimental results showed that, relative to existing
22 formula vibration energy collector of cantilever beam based on piezoelectric effect, power density are big.
According to one embodiment of present invention, column 11 includes column ontology 111 and cushion block 112, and the setting of cushion block 112 is vertical
The lower section of column ontology 111 and support post ontology 111, one end of cantilever beam 22 be fixed on column ontology 111 and cushion block 112 it
Between.Specifically, 22 one end of cantilever beam can be clamped between column ontology 111 and cushion block 112, column ontology 111 and cushion block
112 are equipped with corresponding vertical screw hole, screw in corresponding screw hole for column ontology 111, cantilever by fixing screws 113
Beam 22 tightens together with cushion block 112.Cantilever beam 22 is installed simple to operate as a result,.
Optionally, fixing screws 113 use stainless steel screw, can reduce magnetic interference.
Optionally, column ontology 111 and crossbeam 12 are integrally formed part, can save crossbeam 12 and column ontology 111
Mounting process.The shape of the integrated molding part horizontal cross-section can be T shape.
According to one embodiment of present invention, friction nanometer generating component 3 further includes block 33, and block 33 is vertically threaded through
On the other end of crossbeam 12, the lower section that block 33 is arranged in pole piece 31 is powered on.Due to the presence of block 33, cantilever beam can be limited
22 amplitude in resonance, to widen its vibration frequency range that can be worked.
Further embodiment according to the present invention, block 33 can up and down adjustment, to adjust polymer insulation piece 34 and power on
Gap between pole piece 31.That is, by the upper-lower height for adjusting block 33, it can be with polymer insulation piece 34 and top electrode
Gap size between piece 31.When big due to gap, working band is narrow, and output voltage is high；Gap hour, working band is wide, defeated
Voltage is low out, therefore, adjusts polymer insulation piece 34 and powers on the gap between pole piece 31, so can in working band width and
Unrestricted choice between output voltage height.
Specifically, the other end of crossbeam 12 is equipped with vertical perforation, i.e. the perforation is through the other end upper surface of crossbeam 12
Between lower surface, the side of the other end of crossbeam 12 is equipped with horizontal threaded bore, which is connected with perforation, block
After 33 adaptedly pass through perforation, horizontal threaded bore is screwed in by lock-screw 331 and holds out against block 33.When needing to adjust polymer
Insulating trip 34 and when powering on the gap between pole piece 31, only need to unclamp lock-screw 331, adjust block 33 upward or downward to closing
Then suitable position fastens lock-screw 331 again.It is convenient that gap operating is adjusted as a result,.
Optionally, lock-screw 331 uses stainless steel screw, can reduce magnetic interference.
Optionally, the material of bracket component 1 and block 33 is all made of duralumin.That is, the column 11 of bracket component 1
(including column ontology 111 and cushion block 112) and crossbeam 12 are process for duralumin material, can be to avoid the interference by magnetic field simultaneously
Guarantee enough support stiffness；Wherein, the difficulty welded in view of column ontology 111 and crossbeam 12 need to be washed using monolith blank and be cut
It is processed into integrated molding part.Block 33 is process using duralumin material, can be to avoid the interference by magnetic field.
Further embodiment according to the present invention, friction nanometer generating component 3 further includes upper cushion 32 and lower cushion
36, the setting of upper cushion 32 is powering between pole piece 31 and block 33, and lower cushion 36 is arranged in lower electrode slice 35 and cantilever beam
Between 22.Specifically, it powers on pole piece 31 to paste using super glue on the lower surface of upper cushion 32, while powering on pole piece
The conducting wire of insertion removal insulating layer, comes into full contact with conducting wire with pole piece 31 is powered on, upper cushion 32 between 31 and upper cushion 32
Upper end is mounted on to be mounted on block 33；Lower electrode slice 35 is pasted using super glue on the upper surface of lower cushion 36, together
When between lower electrode slice 35 and lower cushion 36 insertion removal insulating layer conducting wire, connect conducting wire sufficiently with lower electrode slice 35
Touching, lower cushion 36 are directly installed on the upper surface of cantilever beam 22.In a device, upper cushion 32 had both played isolation top electrode
The effect of piece 31 and metal backup 33, but can bumper and absorbing shock, extend the working life of device；Lower cushion 36 had both played isolation
The effect of lower electrode slice 35 and metal cantilever beams 22, but can bumper and absorbing shock, extend the working life of device.It is viscous with super glue
Be attached on polypropylene cushion, meanwhile, between copper-foil conducting electricity and cushion insertion removal insulating layer conducting wire A41, make conducting wire with
Copper foil comes into full contact with；It can be by energy mixed collection device 1000 by powering on the conducting wire that pole piece 31 goes out and the conducting wire that lower electrode goes out
The electric energy being collected into is transferred to external circuit, to drive low-power consumption electrical equipment.
Optionally, the material of upper cushion 32 and lower cushion 36 is all made of polypropylene.Polypropylene has good insulation
Property, therefore, upper cushion 32 can not only play the role of isolation and power on pole piece 31 and metal beam 12, but also can play buffering and subtract
The effect of vibration is conducive to extend the working life of the device；Lower cushion 36 can both play the lower electrode slice 35 of isolation and metal
The effect of cantilever beam 22, and buffer shock-absorbing can be played the role of, it is conducive to extend the working life of the device.
Optionally, the material of cantilever beam 22 uses nickel.Since cantilever beam 22 needs to be designed to elongated and relatively thin form, nickel
With preferable toughness, can commercially nickel plate, by linear cutter at cantilever beam 22.
Optionally, the material of polymer insulation piece 34 is using one of polytetrafluoroethylene (PTFE), polyimides and polyvinyl chloride.
Due to the good insulating of polytetrafluoroethylene (PTFE), polyimides and polyvinyl chloride, the film of tetrafluoroethene, polyimides and polyvinyl chloride
It piece and powers on when pole piece 31 rubs and obtains electronics, negative electrical charge can be made to be kept for considerable time.
According to one embodiment of present invention, the one class resonant frequency of cantilever beam 22 is consistent with environment alternating magnetic field.As a result,
The output electricity for being conducive to energy hybrid collection device 1000 maximizes.For example, under normal circumstances, environment alternating magnetic field frequency is
50Hz, therefore, the one class resonant frequency of cantilever beam 22 is 5Hz, can make the output electricity of energy mixed collection device 1000
It maximizes.
Further embodiment according to the present invention, the size of cantilever beam 22 and the quality of permanent magnet 21 pass through as follows
Software for calculation MATLAB is calculated:
According to non-individual body Theory of Vibration, the equivalent lumped mass m of single order of cantilever beam 22 is obtainedbWith single order equivalent elastic coefficient
kbIt is as follows:
Wherein ρ indicate 22 density of material of cantilever beam, A=bh indicate beam cross-sectional area (width and thickness of beam be respectively b and
H), E is elasticity modulus, J=bh3/ 12 indicate beam section the moment of inertia, ψ "1Expression asks second order to lead x.One first order mode of cantilever beam 22
Function ψ1(x) it can be expressed as follows:
Wherein β1L=1.875104.
If the quality of permanent magnet 21 is mm, and assume that it acts on the free end of cantilever beam 22.Friction power generation component
Lower electrode slice 35 is made of light material, and quality can be ignored, then the equivalent mass of whole system may be expressed as:
ms=mb+mm(ψ″1(L))2
According to the definition of intrinsic frequency, first natural frequency function can be obtained are as follows:
In the density and elasticity modulus of the material of known cantilever beam 22, according to 1000 actual size of energy hybrid collection device
After determining length and width, ω is enabled1=50Hz can calculate the thickness of a variety of cantilever beams 22 and the group of 21 mass of permanent magnet
It closes (referring to Fig. 6).
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of vibration based on friction generator-magnetic field energy mixed collection device characterized by comprising
Bracket component, the bracket component include column and crossbeam, and one end of the crossbeam is fixed with the column；
Cantilever beam assembly, the cantilever beam assembly include cantilever beam and permanent magnet, and the cantilever beam is arranged under the crossbeam
One end of the square and described cantilever beam is fixed on the column, and the other end lower surface of the cantilever beam is arranged in the permanent magnet
On；
Rub nanometer generating component, and the friction nanometer generating component includes powering on pole piece, lower electrode slice and polymer insulation piece,
The other end of the cantilever beam is arranged in the lower section for powering on pole piece and the other end of the crossbeam being arranged in, the lower electrode slice
Top and power on that pole piece is opposite with described, the polymer insulation piece is fixed on the upper surface of the lower electrode slice, described
Polymer insulation piece and described power on have gap between pole piece.
2. the vibration according to claim 1 based on friction generator-magnetic field energy mixed collection device, feature exist
In the column includes column ontology and cushion block, and the cushion block is arranged in the lower section of the column ontology and supports the column
Ontology, one end of the cantilever beam are fixed between the column ontology and the cushion block.
3. the vibration according to claim 1 based on friction generator-magnetic field energy mixed collection device, feature exist
In, the friction nanometer generating component further includes block, and the block is vertically threaded through on the other end of the crossbeam, it is described on
The lower section of the block is arranged in electrode slice.
4. the vibration according to claim 3 based on friction generator-magnetic field energy mixed collection device, feature exist
In, the block can up and down adjustment, to adjust the polymer insulation piece and the gap powered between pole piece.
5. the vibration according to claim 3 or 4 based on friction generator-magnetic field energy mixed collection device, feature
It is, the material of the bracket component and the block is duralumin.
6. the vibration according to claim 3 or 4 based on friction generator-magnetic field energy mixed collection device, feature
It is, the friction nanometer generating component further includes upper cushion and lower cushion, and the upper cushion setting is powered on described
Between pole piece and the block, the lower cushion is arranged between the lower electrode slice and the cantilever beam.
7. the vibration according to claim 1 based on friction generator-magnetic field energy mixed collection device, feature exist
In the material of the cantilever beam uses nickel.
8. the vibration according to claim 1 based on friction generator-magnetic field energy mixed collection device, feature exist
In the material of the polymer insulation piece is using one of polytetrafluoroethylene (PTFE), polyimides and polyvinyl chloride.
9. the vibration according to claim 1 based on friction generator-magnetic field energy mixed collection device, feature exist
In the one class resonant frequency of the cantilever beam is consistent with environment alternating magnetic field.
10. the vibration according to claim 9 based on friction generator-magnetic field energy mixed collection device, feature exist
In the quality of the size of the cantilever beam and the permanent magnet is calculated as follows out:
According to non-individual body Theory of Vibration, the equivalent lumped mass m of single order of cantilever beam is obtainedbWith single order equivalent elastic coefficient kbIt is as follows:
Wherein ρ indicates cantilever material density, and A=bh indicates beam cross-sectional area (width and thickness of beam is respectively b and h), and E is
Elasticity modulus, J=bh3/ 12 indicate beam section the moment of inertia, ψ "1Expression asks second order to lead x.The single order model function of vibration ψ of cantilever beam1
(x) it can be expressed as follows:
Wherein β1L=1.875104.
If the quality of permanent magnet is mm, and assume that it acts on the free end of cantilever beam.The lower electrode slice of friction power generation component is equal
It is made of light material, quality can be ignored, then the equivalent mass of whole system may be expressed as:
ms=mb+mm(ψ″1(L))2
According to the definition of intrinsic frequency, first natural frequency function can be obtained are as follows:
In the density and elasticity modulus of the material of known cantilever beam, according to energy hybrid collection device actual size determine length and
After width, ω is enabled1=50Hz can calculate the thickness of a variety of cantilever beams and the combination of permanent magnetism weight of iron.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454145A (en) * | 2019-07-12 | 2019-11-15 | 中国地质大学（武汉） | Geological drilling bottom hole multi frequency sensor based on friction nanometer power generator |
| CN110729917A (en) * | 2019-11-14 | 2020-01-24 | 温州大学 | Friction bistable state nanometer power generation device |
| CN110752784A (en) * | 2019-10-08 | 2020-02-04 | 浙江大学 | Surface state enhanced high-current density dynamic Schottky generator and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495914A (en) * | 2011-10-31 | 2012-06-13 | 中南大学 | Design method of two-degree-of-freedom piezoelectric vibrator for realizing broadband response |
| CN105871245A (en) * | 2015-01-20 | 2016-08-17 | 北京纳米能源与系统研究所 | Cantilever beam-type composite nano generator |
| CN105897034A (en) * | 2015-01-05 | 2016-08-24 | 李泽唐 | Wind power friction generation device used for desert wind prevention and sand fixation as well as friction power generation |
| CN208143112U (en) * | 2018-04-28 | 2018-11-23 | 忻州师范学院 | A kind of beam type electromagnetism-friction-Piezoelectric anisotropy vibration energy collector |
-
2019
- 2019-04-19 CN CN201910316558.3A patent/CN109889082A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495914A (en) * | 2011-10-31 | 2012-06-13 | 中南大学 | Design method of two-degree-of-freedom piezoelectric vibrator for realizing broadband response |
| CN105897034A (en) * | 2015-01-05 | 2016-08-24 | 李泽唐 | Wind power friction generation device used for desert wind prevention and sand fixation as well as friction power generation |
| CN105871245A (en) * | 2015-01-20 | 2016-08-17 | 北京纳米能源与系统研究所 | Cantilever beam-type composite nano generator |
| CN208143112U (en) * | 2018-04-28 | 2018-11-23 | 忻州师范学院 | A kind of beam type electromagnetism-friction-Piezoelectric anisotropy vibration energy collector |
Non-Patent Citations (1)
| Title |
|---|
| 许颖颖: "悬臂梁压电发电装置的结构设计与研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454145A (en) * | 2019-07-12 | 2019-11-15 | 中国地质大学（武汉） | Geological drilling bottom hole multi frequency sensor based on friction nanometer power generator |
| CN110752784A (en) * | 2019-10-08 | 2020-02-04 | 浙江大学 | Surface state enhanced high-current density dynamic Schottky generator and preparation method thereof |
| CN110729917A (en) * | 2019-11-14 | 2020-01-24 | 温州大学 | Friction bistable state nanometer power generation device |
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