CN110365184A - A kind of bistable state multi-mode vibration energy collector having raising frequency technology - Google Patents
A kind of bistable state multi-mode vibration energy collector having raising frequency technology Download PDFInfo
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- CN110365184A CN110365184A CN201810322840.8A CN201810322840A CN110365184A CN 110365184 A CN110365184 A CN 110365184A CN 201810322840 A CN201810322840 A CN 201810322840A CN 110365184 A CN110365184 A CN 110365184A
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- 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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Abstract
The invention discloses a kind of bistable state multi-mode vibration energy collectors for having raising frequency technology, including I-shaped sleeve, wound around coil, inside permanent magnet in I-shaped sleeve is set, the first film and the second film of inside permanent magnet upper and lower ends are set, inside permanent magnet is fixed in respective films by respective outer permanent magnet, it further include middle casing, first surface end cap, second curved surface end cap, the first film is clamped between first surface end cap and the upper surface of middle casing by first surface end cap, the upper surface of first surface end cap and middle casing is all the variable curvature section using the first film as symmetry axis, second curved surface end cap, the lower end surface of middle casing and the corresponding setting of the second film, first surface end cap and the second curved surface are provided with coaxially connected the first iron stator and the second iron stator.The present invention overcomes the disadvantages of existing vibration energy collector resonance frequency height and deep potential well, improves output effect of the collector in the case where motivating a little.
Description
Technical field
The invention belongs to energy acquisition technical fields, and in particular to a kind of bistable state multi-mode vibration for having raising frequency technology
Energy collecting device.
Background technique
In recent years, length is achieved using portable communications system, wireless sensor network as the low power dissipation electron technology of representative
The development of foot, plays the effect to become more and more important in the daily production activity of people.In view of many wireless sensors all works
Make directly provide the region of electric energy in conventional electric power network, and battery power supply is used to cannot achieve the long-acting of " permanence "
Operational mode, this results in the limitation of power supply system to become and restricts these equipment further widely applied bottleneck, ambient vibration
Energy acquisition technology is the effective ways for solving problem above.
Electromagnetic vibration energy collection technique is will largely existing vibration in nature using Faraday's electromagnetic induction law
Dynamic mechanical energy is converted into the energy collecting device of electric energy.According to the Ferrari law of electromagnetic induction it is recognised that conductor coils circuit
When magnetic flux in area changes, induced electromotive force will be generated in the wire loop, to generate induction in coil
Electric current exports electric energy outward, the final conversion realized from mechanical energy to electric energy.
According to above-mentioned working principle, electromagnetic vibration energy collection technique is exactly the machine that will be randomly generated in external environment
Tool vibrates the movement for being converted into wire loop or permanent magnet, the relative motion between coil and permanent magnet is realized, to make line
Magnetic flux in circle changes, and corresponding induced electromotive force is generated in coil.
In application electromagnetic vibration energy collection technique, the collecting efficiency of vibrational energy depends on resonant frequency and vibration
Two elements of amplitude, to realize high efficiency energy acquisition, the resonant frequency of vibration energy collector need to be with extraneous vibration frequency phase
Match, but the vibration in environment is based on low frequency, and traditional vibration energy collector resonant frequency is high, cannot effectively acquire
Vibrational energy in environment has that acquisition efficiency is not high in weak intensity vibration environment.Multistable vibration known today
Energy collecting device is mostly to be moved between substantially trap using the non-linear of magnetic force to obtain, and can only pass through the size and distribution of change magnet
Position changes the barrier height of multistable movement, but the height of magnet size and distributing position concerning output energy, furthermore
Due to the complexity and essentially nonlinear of magnetic force, this extensive adjustment mode limits the further excellent of collector output performance
Change.Therefore, exploitation can make full use of magnetic field performance, and it is very necessary for possessing the vibration energy collector of higher power density
's.
The above-mentioned prior art has the following disadvantages；
1, prior art resonance frequency is higher, potential well is deeper, can not acquire the low-frequency vibration energy in environment；
2, energy transformation ratio is low, and collecting efficiency is not high；
3, narrow application range, degree of flexibility is low, reconciles difficulty, can not advanced optimize.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of bistable state multi-modes for having raising frequency technology
Vibration energy collector, the vibration energy collector provide one kind can low frequency acquisition high frequency collect and have slightly excitation is lower to produce
The potentiality moved between raw substantially trap and the vibration energy collector that can while work under two kinds of acquisition modes.
The present invention is achieved by the following technical solutions:
A kind of bistable state multi-mode vibration energy collector having raising frequency technology characterized by comprising coil dress
It sets, permanent magnet device, vibration regulating device, wherein
The coil device includes: I-shaped sleeve 5, wound around coil 6, and the wound around coil is wrapped in the I-shaped jacket
5 outside of cylinder；
The permanent magnet device includes: the inside permanent magnet 4 being arranged in the I-shaped sleeve, is arranged in the inside
The first film 1-1 of permanent magnet upper and lower ends and the second film 1-2, the inside permanent magnet is by setting in the first film
First outside permanent magnet 3-1 of the opposite other side is fixed on the first film, and the inside permanent magnet is by setting in institute
The second outside permanent magnet 3-2 that the second film is stated with respect to the other side is fixed on second film；
The vibration regulating device includes: middle casing 10, first surface end cap 8-1, the second curved surface end cap 8-2, described
Middle casing is connect with the upper transverse part of the I-shaped sleeve and inferior transverse part interference, and the upper and lower end face of the middle casing is presented
U shape, the first surface end cap are connected to the upper surface of the middle casing, the first film by threaded coaxial
It is clamped between the first surface end cap and the upper surface of the middle casing by the first surface end cap, described first
Curved surface end cap is variable curvature section close to the end face of the first film, and the upper surface of the middle casing is and first song
The symmetrically arranged variable curvature section in the variable curvature section of face end cap；The second curved surface end cap is connected to described by threaded coaxial
The lower end surface of middle casing, second film are clamped in the second curved surface end cap and described by the second curved surface end cap
Between the lower end surface of middle casing, the second curved surface end cap is variable curvature section close to the end face of second film, described
The lower end surface of middle casing is the symmetrically arranged variable curvature section in variable curvature section with the second curved surface end cap；Described first
Curved end, which covers, is additionally provided with the first coaxially connected iron stator 9-1, second curved end cover be additionally provided with it is coaxially connected
The second iron stator 9-2.
In above-mentioned technical proposal, the first iron stator 9-1 of coaxial threaded connection is additionally provided on the first surface end cap,
Second curved end covers the second iron stator 9-2 for being additionally provided with coaxial threaded connection.
In above-mentioned technical proposal, the surrounding of the first film and second film is fastened respectively to first annular intermediate plate
The annular intermediate plate 2-2 of 2-1 and second, the first annular intermediate plate are clamped in the first surface end by the first surface end cap
Between lid and the upper surface of the middle casing, the second annular intermediate plate is clamped in described the by the second curved surface end cap
Between two curved surface end caps and the lower end surface of the middle casing.
In above-mentioned technical proposal, the parameter in the variable curvature section isAs shown in Fig. 4, SxFor the letter of x
Number, x is value in the direction of the x axis, is 0 point of value to the right with the variable curvature section leftmost side, wherein L is variable curvature section in x
The projected length in direction, vertical range when h is x=L between variable curvature section and undeformed film, n are the integer greater than 2；
Its right side.
In above-mentioned technical proposal, the first film and second film are made of polyimide material.
In above-mentioned technical proposal, the wound around coil is copper material.
In above-mentioned technical proposal, the inside permanent magnet, the first outside permanent magnet and the second outside permanent magnet are cylinder
Rubidium iron boron permanent magnet.
In above-mentioned technical proposal, first iron stator and the second iron stator are oxidation iron core, and are coaxially disposed air guide
Through-hole 11.
It further include the first outer end cap that coaxial threaded is connected on the outside of the middle casing upper surface in above-mentioned technical proposal
7-1 and coaxial threaded are connected to the second outer end cap 7-2 on the outside of the middle casing lower end surface, first outer end cap and second
It is provided with end cap gas port 12 on outer end cap, shell gas port 13 is provided on the middle casing, the end cap gas port
The sum of the area of area and shell gas port accounts for the 40%~60% of the sum of area of the first film and the second film, described
The coil throughbore 14 stretched out for the wound around coil end is provided on middle casing.
In above-mentioned technical proposal, increasing is provided on the end cap gas port of first outer end cap and/or the second outer end cap
Add driving source-sound absorption efficiency synergistic device 15, the synergistic device is bell shape, at sound absorption the diameter of position be greater than with
The diameter of end cap gas port junction.
In above-mentioned technical proposal, it is highly 50mm~60mm. that the diameter of the collector, which is 70mm~90mm,
The advantages and benefits of the present invention are:
1. reducing barrier height.The face that fixes to clamp of the first film and the second film is variable curvature section, introduces variable curvature
Section and magnetic force become strong nonlinearity structure, and structure potential-energy function and variable curvature cross section parameter are closely bound up, and selection is suitable
Cross section parameter can be effectively reduced the potential barrier of system, more easily pass collector between potential barrier generates substantially trap and move, may be used also
It will not be destroyed under biggish acceleration with protective device.
2. improving electromechanical transformation efficiency.As permanent magnet pumps, film will be contacted with variable curvature section, so that
The equivalent redius of film becomes smaller, the overall stiffness of structure becomes larger so that structure realize low frequency acquisition high frequency collect target, in addition with
Existing single thin film energy collecting device is compared, and double-layer structure can make inside permanent magnet be in coil internal vibration always, is effectively mentioned
The change rate of high coil ambient magnetic flux amount incudes double pick-up modes of sound pressure variations and extraneous vibration at the same time.
3. gas port is arranged on the first iron stator, the second iron stator, the first outer end cap, the second outer end cap and middle casing
The air damping generated in bilayer film vibration processes can be cut down, this it is a series of design so that structure have more preferably convert
Efficiency.
4. increasing frequency bandwidth.Membrane tension in collector static can be adjusted, while iron stator and curved surface end cap
Between use thread connecting mode, can by rotation iron stator adjust the distance between permanent magnet device and iron stator, in addition
Variable curvature cross section parameter can dynamic regulation, adjust above three parameter permanent magnet device can be made bistable state vibration occur, with this
Widen the working band of energy collecting device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1；
Fig. 2 is the perspective view of the explosion of embodiment 1；
Fig. 3 is the longitudinal profile structural map of embodiment 1；
Fig. 4 is variable curvature cross section parameter figure；
Fig. 5 is the structural schematic diagram of embodiment 2.
Wherein:
1-1: the first film, the 1-2: the second film, 2-1: first annular intermediate plate, the 2-2: the second annular intermediate plate, 3-1: the first
Outside permanent magnet, the 3-2: the second outside permanent magnet, 4: inside permanent magnet, 5: I-shaped sleeve, 6: wound around coil, outside 7-1: the first
End cap, the 7-2: the second outer end cap, 8-1: first surface end cap, the 8-2: the second curved surface end cap, the 9-1: the first iron stator, 9-2: the second
Iron stator, 10: middle casing, 11: air guiding through hole, 12: end cap gas port, 13: shell gas port, 14: coil throughbore, 15: increasing
Imitate device.
It for those of ordinary skill in the art, without creative efforts, can be according to above attached
Figure obtains other relevant drawings.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, combined with specific embodiments below furtherly
Bright technical solution of the present invention.
Embodiment 1
In order to overcome the disadvantages of existing non-linear wideband vibration energy collector resonance frequency is higher and potential well is deeper, improve
Output effect of the collector in the case where motivating a little, present embodiments provides a kind of bistable state vibrational energy for having raising frequency technology and adopts
Storage.As shown in Figure 1, Figure 2 and Figure 3, a kind of bistable state multi-mode vibration energy collector having raising frequency technology, feature exist
In, comprising: coil device, permanent magnet device, vibration regulating device, wherein
The coil device includes: I-shaped sleeve 5, and sleeve diameter 18mm, wound around coil 6 is the highly conductive of 0.1mm
The barrel outer surface of enamel wire coil, the I-shaped sleeve is equipped with groove, and the wound around coil is wrapped in the I-shaped jacket
The barrel outer surface groove of cylinder 5, the winding circle number of wound around coil are 200 circles；
The permanent magnet device includes: the inside permanent magnet 4 being arranged in the I-shaped sleeve, the inside permanent magnet
For the cylindrical rubidium iron boron permanent magnet of diameter 15mm, high 15mm, the first film of the inside permanent magnet upper and lower ends is set
The size of 1-1 and the second film 1-2, the first film and the second film is unanimously all radius 35mm, the circle of thick 0.05mm
The surrounding of Kapton, the first film and second film is fastened respectively to first annular intermediate plate 2-1 and second
On annular intermediate plate 2-2, the first outside rubidium iron boron permanent magnet 3-1 for serving as inertia mass is fixed among the first film 1-1
With inside rubidium iron boron permanent magnet 4, the first outside permanent magnet 3-1 is the cylinder of diameter 15mm, high 1.5mm, the first outside rubidium iron
Boron permanent magnet 3-1 and inside rubidium iron boron permanent magnet 4 are heteropolar opposite, and polarization direction is each perpendicular to the surface the first film 1-1, utilize the
It is neutral that attraction between one outside rubidium iron boron permanent magnet 3-1 and inside rubidium iron boron permanent magnet 4 is fixed in the first film 1-1
The two sides in face；Second outside permanent magnet 3-2 is similarly the cylindrical rubidium iron boron permanent magnet and inside rubidium of diameter 15mm, high 1.5mm
Iron boron permanent magnet 4 is heteropolar opposite, and polarization direction is each perpendicular to the second surface film 1-2, utilizes the second outside rubidium iron boron permanent magnet
Attraction between 3-2 and inside rubidium iron boron permanent magnet 4 is fixed in the two sides of the second film 1-2 neutral surface.
The vibration regulating device includes: middle casing 10, first surface end cap 8-1, the second curved surface end cap 8-2, described
Middle casing is connect with the upper transverse part of the I-shaped sleeve and inferior transverse part interference, and the upper and lower end face of the middle casing is presented
U shape, the first surface end cap are connected to the upper surface of the middle casing, the first film by threaded coaxial
It is clamped between the first surface end cap and the upper surface of the middle casing by the first surface end cap, described first
Curved surface end cap is variable curvature section close to the end face of the first film, and the upper surface of the middle casing is and first song
The symmetrically arranged variable curvature section in the variable curvature section of face end cap；The second curved surface end cap is connected to described by threaded coaxial
The lower end surface of middle casing, second film are clamped in the second curved surface end cap and described by the second curved surface end cap
Between the lower end surface of middle casing, the second curved surface end cap is variable curvature section close to the end face of second film, described
The lower end surface of middle casing is the symmetrically arranged variable curvature section in variable curvature section with the second curved surface end cap；Above-mentioned change is bent
The parameter in rate section isThe first iron stator 9- of coaxial threaded connection is additionally provided on the first surface end cap
1, second curved end covers the second iron stator 9-2 for being additionally provided with coaxial threaded connection, first iron stator and second
Iron stator is all that outer diameter is 40mm, the ring shaped iron oxide iron stator of annular diameters 20mm, a height of 5mm.Adjust the first iron stator
The distance between 9-1 and the first outside permanent magnet 3-1 are 8mm, between the second iron stator 9-2 and the second outside permanent magnet 3-2
Distance is 8mm.
In above-mentioned technical proposal, the surrounding of the first film and second film is fastened respectively to first annular intermediate plate
The annular intermediate plate 2-2 of 2-1 and second, the first annular intermediate plate are clamped in the first surface end by the first surface end cap
Between lid and the upper surface of the middle casing, the second annular intermediate plate is clamped in described the by the second curved surface end cap
Between two curved surface end caps and the lower end surface of the middle casing.
It further include the first outer end cap that coaxial threaded is connected on the outside of the middle casing upper surface in above-mentioned technical proposal
7-1 and coaxial threaded are connected to the second outer end cap 7-2 on the outside of the middle casing lower end surface, first outer end cap and second
It is provided with end cap gas port 12 on outer end cap, shell gas port 13 is provided on the middle casing, the end cap gas port
The sum of area of area and shell gas port is 2000mm2, it is provided on the middle casing and is stretched for the wound around coil end
Coil throughbore 14 out
In above-mentioned technical proposal, it is highly 60mm. that the diameter of energy collecting device, which is 90mm,
When the extraneous excitation existed perpendicular to vibration of thin membrane component, film 1-1 and 1-2 will be caused and vibrate and drive first
Outside permanent magnet 3-1 and the second outside permanent magnet 3-2 and inside permanent magnet 4 do in middle casing 10 jointly and up and down reciprocatingly shake
Dynamic, 6 magnetic flux change of wound around coil so as to cause the winding of I-shaped 5 groove of sleeve generates induction electric energy, passes through external friendship
Leakage resistance case and oscillograph, measuring it in basic excitation acceleration is respectively 0.5g, and under 0.8g, 1.2g, effective working band is
6-10Hz, 4-12.5Hz, 3-19.5Hz, corresponding peak power output are 0.57mW, and 1.24mW, 1.94mW. are wherein first thin
The system equivalent stiffness that film 1-1 and the second film 1-2 nonlinear restoring force and variable curvature section are formed, in conjunction with the first iron stator 9-
1 and second iron stator 9-2 non-linear attraction, that there are 2 equilbrium positions is (extraneous small by the first film 1-1 and the second film 1-2
Disturbance is when causing a deviation from this equilbrium position, under system resilience and non-linear magneticaction, outside permanent magnet 3-1,3-2 and interior
Side permanent magnet 4 can still be stable at this position), system is bistable system at this time.
Compared with existing two interfered set vibrational system realizes the energy collecting device of raising frequency technology, liter of the invention
Frequency technology using variable curvature section make during the first film 1-1, the second film 1-2 vibration motion with first surface end cap 8-
1, the variable curvature section of the second curved surface end cap 8-2 and middle casing 10 contact, the first film 1-1 from first annular intermediate plate 2-1 to
Part between the position contacted with variable curvature section stops vibration, and remainder continues to move under inertia force effect, at this time
The radius of film 1-1 becomes smaller, and equivalent stiffness becomes larger, the vibration frequency of system is promoted, it is contemplated that output energy and frequency
Cube is directly proportional, this variable curvature section improves the energy output effect of structure, and similarly the second film 1-2 has same work former
Same technical effect may be implemented in reason.
Compared with existing single-film energy collecting device, double-layer film structure can make inside permanent magnet 4 always in winding
6 internal vibration of coil, effectively increases the variation rate of magnetic flux around wound around coil 6, has more preferably energy conversion efficiency.
Embodiment 2
Embodiment 1 has obviously had good delivery efficiency under mechanical oscillation, in order to expand the application model of embodiment 1
It encloses, further increases output effect, by the noise generated in vibration processes equally as excitation source forcing the first film 1-1 and the
Two film 1-2 vibration.The present embodiment is in a kind of bistable state vibration energy collector for having raising frequency technology described in embodiment 1
On the basis of, the first outer end cap 7-1 connection synergistic device 15 makes it have similar helmholtz resonance device (Helmholtz resonator)
Function, be achieved in and drive vibration of thin membrane by sound pressure variations, realize the effect of double pick-ups of vibration and acoustic pressure, to meet difference
Energy acquisition demand creation condition under operating condition.
Embodiment 3
On the basis of embodiment 1 and embodiment 2, output effect is further increased, the noise that will be generated in vibration processes
It is same to be vibrated as excitation source forcing the first film 1-1 and the second film 1-2.The present embodiment is in a kind of tool as described in example 2
On the basis of the bistable state vibration energy collector of standby raising frequency technology, a synergistic device 15 is further added by the second outer end cap 7-2,
So that it is had the function of similar helmholtz resonance device (Helmholtz resonator), is achieved in and drives film by sound pressure variations
Vibration realizes the effect of double pick-ups of vibration and acoustic pressure, to meet the energy acquisition demand creation condition under different operating conditions.
The spatially relative terms such as "upper", "lower", "left", "right" have been used in embodiment for ease of explanation, have been used for
Relationship of the elements or features relative to another elements or features shown in explanatory diagram.It should be understood that in addition to figure
Shown in except orientation, spatial terminology is intended to include the different direction of device in use or operation.For example, if in figure
Device be squeezed, the element for being stated as being located at other elements or feature "lower" will be located into other elements or feature "upper".
Therefore, exemplary term "lower" may include both upper and lower orientation.Device, which can be positioned in other ways, (to be rotated by 90 ° or position
In other orientation), it can be interpreted accordingly used herein of the opposite explanation in space.
Moreover, the relational terms of such as " first " and " second " or the like are used merely to one with another with identical
The component of title distinguishes, without necessarily requiring or implying between these components there are any this actual relationship or
Sequentially.
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (10)
1. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology characterized by comprising coil device,
Permanent magnet device, vibration regulating device, wherein
The coil device includes: I-shaped sleeve (5), wound around coil (6), and the wound around coil is wrapped in the I-shaped jacket
On the outside of cylinder (5)；
The permanent magnet device includes: the inside permanent magnet (4) being arranged in the I-shaped sleeve, setting the inside forever
The first film (1-1) and the second film (1-2) of magnet upper and lower ends, the inside permanent magnet are thin described first by being arranged
Film is fixed on the first film with respect to the first outside permanent magnet (3-1) of the other side, and the inside permanent magnet is by setting
It is fixed on second film in second film with respect to the second outside permanent magnet (3-2) of the other side；
The vibration regulating device includes: middle casing (10), first surface end cap (8-1), the second curved surface end cap (8-2), institute
It states middle casing to connect with the upper transverse part of the I-shaped sleeve and inferior transverse part interference, the middle casing upper and lower end face is presented
U shape, the first surface end cap are connected to the upper surface of the middle casing, the first film by threaded coaxial
It is clamped between the first surface end cap and the upper surface of the middle casing by the first surface end cap, described first
Curved surface end cap is variable curvature section close to the end face of the first film, and the upper surface of the middle casing is and first song
The symmetrically arranged variable curvature section in the variable curvature section of face end cap；The second curved surface end cap is connected to described by threaded coaxial
The lower end surface of middle casing, second film are clamped in the second curved surface end cap and described by the second curved surface end cap
Between the lower end surface of middle casing, the second curved surface end cap is variable curvature section close to the end face of second film, described
The lower end surface of middle casing is the symmetrically arranged variable curvature section in variable curvature section with the second curved surface end cap；Described first
Curved end, which covers, is additionally provided with coaxially connected the first iron stator (9-1), and second curved end, which covers to be additionally provided with, coaxially to be connected
The second iron stator (9-2) connect.
2. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology according to claim 1, feature
It is, the first iron stator (9-1) of coaxial threaded connection, the second curved surface end cap is additionally provided on the first surface end cap
On be additionally provided with coaxial threaded connection the second iron stator (9-2).
3. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology according to claim 1, feature
It is, the surrounding of the first film and second film is fastened respectively to first annular intermediate plate (2-1) and the second marmon clamp
Piece (2-2), the first annular intermediate plate are clamped in the first surface end cap and the centre by the first surface end cap
Between the upper surface of shell, the second annular intermediate plate by the second curved surface end cap be clamped in the second curved surface end cap with
Between the lower end surface of the middle casing.
4. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology according to claim 1, feature
It is, the parameter in the variable curvature section isWherein L is length of the variable curvature section in the direction x, when h is x=L
Vertical range between variable curvature section and undeformed film, n are the integer greater than 2.
5. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology according to claim 1, feature
It is, the first film and second film are made of polyimide material, and the wound around coil is copper material.
6. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology according to claim 1, feature
It is, the inside permanent magnet, the first outside permanent magnet and the second outside permanent magnet are cylindrical rubidium iron boron permanent magnet.
7. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology according to claim 1, feature
It is, first iron stator and the second iron stator are oxidation iron core, and are coaxially disposed air guiding through hole (11).
8. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology according to claim 1, feature
It is, further includes the first outer end cap (7-1) and coaxial threaded company that coaxial threaded is connected on the outside of the middle casing upper surface
The second outer end cap (7-2) on the outside of the middle casing lower end surface is connect, is arranged on first outer end cap and the second outer end cap
Have end cap gas port (12), is provided on the middle casing shell gas port (13), the area and shell of the end cap gas port
The sum of the area of body gas port accounts for the 40%~60% of the sum of area of the first film and the second film, the middle casing
On be provided with for the wound around coil end stretch out coil throughbore (14).
9. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology according to claim 8, feature
It is, increase driving source-acoustic absorption effect is provided on the end cap gas port of first outer end cap and/or the second outer end cap
The synergistic device (15) of rate, the synergistic device are bell shape, and the diameter of position is greater than and connect with end cap gas port at sound absorption
The diameter at place.
10. a kind of bistable state multi-mode vibration energy collector for having raising frequency technology according to claim 1, feature
It is, the diameter of the collector is 70mm~90mm, and direct tube section height is 50mm~60mm.
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