CN109818529A - A kind of piezoelectricity wind energy collecting device and control method - Google Patents
A kind of piezoelectricity wind energy collecting device and control method Download PDFInfo
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- CN109818529A CN109818529A CN201910230723.3A CN201910230723A CN109818529A CN 109818529 A CN109818529 A CN 109818529A CN 201910230723 A CN201910230723 A CN 201910230723A CN 109818529 A CN109818529 A CN 109818529A
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Abstract
The present invention discloses a kind of piezoelectricity wind energy collecting device and control method, is related to miniature energy assembling sphere.The piezoelectricity wind energy collecting device includes: multiple piezo-electric generating portions, the initial length of each piezo-electric generating portion plate is all different, to which the wind shake frequency in each piezo-electric generating portion is also just different, and then expand the specific wind shake frequency in piezo-electric generating portion, maximize piezo-electric generating portion close to wind shake frequency, reach and preferably improves device in the ability for deviateing with collecting electric energy when wind resonant frequency by increasing amplitude with wind resonance effect.The control method acquires the data of piezoelectric ceramic piece on each piezo-electric generating portion plate, determines the maximum piezoelectric ceramic piece that generates electricity by comparison, adjusts the length of remaining plate；By adjust plate length, make slab length change after piezo-electric generating portion specific wind shake frequency maximize close to wind shake frequency, reach preferably with wind resonance effect.
Description
Technical field
The present invention relates to miniature energy collection technique fields, more particularly to a kind of piezoelectricity wind energy collecting device and controlling party
Method.
Background technique
Since the problem of energy shortage occurs in " oil crisis ", it was recognized that conventional fossil energy supply is unstable
Property and finiteness, then seek clean renewable energy become Modern World an important topic.Wind energy is as renewable
, free of contamination natural energy resources, cause national governments again, scientific research institution, enterprise pay close attention to.
In the energy of the diversified forms existing for natural environment, by the vibrational energy of wind energy excitation, there are higher energy is close
Degree.And piezoelectric material for vibrational energy collection there are many advantage, such as structure is simple, does not generate heat, no electromagnetic interference, clearly
Clean environmental protection etc..Vibrational energy is converted into electric energy, then powers directly to microelectronic component by collecting circuit or is stored in and can fill
It is a kind of ideal source of low-power electronic devices in battery.
But current miniature wind energy collecting device only can just be collected into the electric energy of higher-wattage under specific wind shake frequency,
If deviateing specific wind shake frequency, the ability that wind energy collecting device collects energy declines to a great extent, therefore existing wind energy collecting device cannot
Make full use of the vibration of various wind shake frequencies present in ambient enviroment.
Summary of the invention
The object of the present invention is to provide a kind of piezoelectricity wind energy collecting device and control method, solve around cannot making full use of
Present in environment the problem of the vibration of various wind shake frequencies.
To achieve the above object, the present invention provides following schemes:
A kind of piezoelectricity wind energy collecting device, comprising: base support, resonant cavity, shell, piezo-electric generating portion and wind gathering mouth；
The base support is fixed on earth's surface；The base support is used to support the resonant cavity, keeps the resonant cavity remote
From earth's surface；
The resonant cavity is cylindrical shape, and the cavity wall of the resonant cavity is connect with the base support by bearing；It is described humorous
Vibration chamber is for putting the piezo-electric generating portion；
The shell is cylindrical shape, and the jacket is flexibly connected outside the resonant cavity, and with the base support；Institute
Shell is stated for protecting the resonant cavity and the piezo-electric generating portion；
The cavity wall of the resonant cavity is equipped with piezo-electric generating hole, and the piezo-electric generating portion is along the radial described of the resonant cavity
Piezo-electric generating slides in hole, and a part in the piezo-electric generating portion is in the resonant cavity, the piezo-electric generating portion it is another
It is partially between the resonant cavity and the shell；The piezo-electric generating portion is used to resonate with wind energy and generate electricity；
The quantity of the wind gathering mouth is two, and the both ends of the resonant cavity are respectively fixedly connected with the wind gathering mouth；Institute
Wind gathering mouth is stated for assembling wind energy.
Optionally, the quantity in the piezo-electric generating portion is multiple, and the quantity in the piezo-electric generating hole is multiple, the piezoelectricity
The quantity in power generation hole is identical as the quantity in the piezo-electric generating portion, and each piezo-electric generating portion includes: a plate, two
Bluff body and two piezoelectric ceramic pieces；
Multiple piezo-electric generating portions are uniformly arranged on the resonant cavity；
The plate slides in the piezo-electric generating hole；One end of the plate is in the resonant cavity, described flat
The other end of plate is between the resonant cavity and the shell；
Each plate is in the difference of the length in the resonant cavity；
The piezoelectric ceramic piece is respectively arranged on the upper and lower surfaces of the plate positioned at the intra resonant cavity；
The bluff body slides in the piezo-electric generating hole, and is located at the plate close to the two sides of the wind gathering mouth；
One end of the bluff body is in the resonant cavity, the other end of the bluff body be in the resonant cavity and the shell it
Between；
It is identical as the length of the corresponding plate that two bluff bodys are in the length in the resonant cavity.
Optionally, the piezoelectricity wind energy collecting device further include: controller, the controller respectively with the bluff body and
The plate electrical connection；
The controller is used to control the bluff body and the plate is in the length of the intra resonant cavity point.
Optionally, the piezo-electric generating portion further include: multiple displacement sensors；Institute's displacement sensors are set to described flat
Plate is on one end between the resonant cavity and the shell and the bluff body is in the resonant cavity and the shell
Between one end on；Institute's displacement sensors are electrically connected with the controller；
Institute's displacement sensors are used to detect the location information of the plate and bluff body, and the location information hair that will test
Give the controller.
Optionally, the piezoelectricity wind energy collecting device further include: motor, the motor respectively with the controller, the resistance
Fluid and plate connection；
The motor is used to adjust the bluff body and the plate is in the length of the intra resonant cavity point.
Optionally, the piezoelectricity wind energy collecting device further include: directional plate, the directional plate are adhered to the wind gathering mouth
Outer surface；
The directional plate makes the wind gathering mouth and the resonance under the action of the wind, driving the resonant cavity to rotate
Chamber is passively windward.
Optionally, the shape of the bluff body is cylindrical body or cuboid or prism.
A kind of piezoelectricity wind energy collecting device control method, applied to above-mentioned piezoelectricity wind energy collecting device；
The control method includes:
Control motor adjusts the position of all plates to original state；
Acquire the voltage value that all piezoelectric ceramic pieces generate；
According to the voltage value of acquisition, is determined by comparison and generate maximum first piezoelectric ceramic piece of voltage value；
Obtain the data of the first displacement sensor on plate corresponding with first piezoelectric ceramic piece；
According to the data of first displacement sensor, the position that the motor adjusts all plates is controlled, institute is made
The data of displacement sensors are identical as the data of first displacement sensor；
After setting time, controls the motor and adjust the position of all plates to the original state, it is complete
Cheng Yici piezoelectricity wind energy collecting process.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
The present invention discloses a kind of piezoelectricity wind energy collecting device and control method, which includes multiple piezoelectricity hairs
The initial length in electric portion, each piezo-electric generating portion plate is all different, so that the wind shake frequency in each piezo-electric generating portion is just not yet
Together, so expand piezo-electric generating portion specific wind shake frequency, make piezo-electric generating portion maximize close to wind shake frequency, reach ideal
Device is improved in the ability for deviateing with collecting electric energy when wind resonant frequency by increasing amplitude with wind resonance effect.The controlling party
Method acquires the data of piezoelectric ceramic piece on each piezo-electric generating portion plate, determines the maximum piezoelectric ceramic piece that generates electricity by comparison,
Adjust the length of remaining plate；By adjusting the length of plate, the specific wind shake in the piezo-electric generating portion after changing slab length
Frequency maximize close to wind shake frequency, reach preferably with wind resonance effect.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structure chart of piezoelectricity wind energy collecting device provided by the embodiment of the present invention 1；
Fig. 2 is the side view of piezoelectricity wind energy collecting device provided by the embodiment of the present invention 1；
Fig. 3 is wind direction automatic principle of compensation schematic diagram provided by the embodiment of the present invention 1；
Fig. 4 is the A-A ' sectional view of collector resonant cavity provided by the embodiment of the present invention 1；
Fig. 5 is the structure principle chart in single piezo-electric generating portion in piezoelectricity wind energy collecting device provided by the embodiment of the present invention 1；
Fig. 6 is the flow chart of piezoelectricity wind energy collecting device control method provided by the embodiment of the present invention 2；
Fig. 7 is that power circuit figure is collected in piezo-electric generating portion provided by the embodiment of the present invention 3；
Fig. 8 is figure before the structure distribution in piezo-electric generating portion provided by the embodiment of the present invention 3 is adjusted；
Fig. 9 is to scheme after the structure distribution in piezo-electric generating portion provided by the embodiment of the present invention 3 is adjusted.
Wherein, 1, shell；2, wind gathering mouth；3, resonant cavity；4, bluff body；5, plate；6, directional plate；7, base support；8,
Piezoelectric ceramic piece；A-A ' is the cutting plane of collector resonant cavity；9, battery；10, I group of piezo-electric generating portion；11, II group of piezoelectricity hair
Electric portion；12, III group of piezo-electric generating portion；13, IV group of piezo-electric generating portion；14, V group of piezo-electric generating portion；15, VI group of piezo-electric generating portion；
16, VII group of piezo-electric generating portion；17, VIII group of piezo-electric generating portion.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment 1
The present embodiment provides a kind of piezoelectricity wind energy collecting device, Fig. 1 is piezoelectricity wind energy collecting provided by the embodiment of the present invention 1
The structure chart of device；Fig. 2 is the side view of piezoelectricity wind energy collecting device provided by the embodiment of the present invention 1, a kind of referring to Fig. 1 and Fig. 2
Piezoelectricity wind energy collecting device, comprising: base support 7, resonant cavity 3, shell 1, piezo-electric generating portion and wind gathering mouth 2.
Base support 7 is fixed on earth's surface.Base support 7 includes: pedestal and pillar, and pillar is fixed on pedestal center, pedestal
It fixes on the ground, pillar is connect with resonant cavity 3 by bearing.
Base support 7 is used to support resonant cavity 3, makes resonant cavity 3 far from earth's surface.
Resonant cavity 3 is cylindrical shape, and the cavity wall of resonant cavity 3 is connect with base support 7 by bearing, further resonant cavity 3
Cavity wall is connect with the pillar of base support 7 by bearing, and the preferred frictional resistance of bearing is small, and starting performance and load-carrying properties are excellent
Rolling bearing；Resonant cavity 3 is for putting piezo-electric generating portion.
Shell 1 is cylindrical shape, and shell 1 covers on outside resonant cavity 3, and is flexibly connected with base support 7；Shell 1 is for protecting
Resonant cavity 3 and piezo-electric generating portion.
The quantity of wind gathering mouth 2 is two, and the both ends of resonant cavity 3 are respectively fixedly connected with a wind gathering mouth 2；Wind gathering mouth 2 is used for
Assemble natural wind, collects wind energy.The shape of wind gathering mouth 2 can be also possible to hemispherical to be horn-like.
Piezoelectricity wind energy collecting device further include: directional plate 6, the length of directional plate 6 are greater than the maximum gauge of wind gathering mouth 2, tuning
Plate 6 is adhered to the outer surface of a wind gathering mouth 2；Directional plate 6 makes one to gather under the action of the wind, resonant cavity 3 being driven to rotate
2 resonant cavity 3 of air port is passive windward.
Fig. 3 is 1 wind direction automatic principle of compensation schematic diagram of the embodiment of the present invention, and referring to Fig. 3, straight arrows indicate nature in figure
The wind direction of wind, rotation arrows indicate the direction of rotation of piezoelectricity wind energy collecting device, and what the side of resonant cavity 3 was fixedly connected is common
Wind gathering mouth 2, the other side are the wind gathering mouths 2 of adhesion directional plate 6, and directional plate 6 under the action of the wind, can generate moment loading, are driven
Upper part including resonant cavity 3 integrally rotates relative to base support 7, meets 2 resonant cavity 3 of wind gathering mouth passively
Wind, face wind direction utmostly utilize wind energy.Wherein, the wind gathering mouth 2 of 3 two sides of resonant cavity all can front windward.
Fig. 4 is the A-A ' sectional view of collector resonant cavity provided by the embodiment of the present invention 1, referring to fig. 4, resonant cavity 3
Cavity wall is equipped with piezo-electric generating hole, and piezo-electric generating portion is slided in piezo-electric generating hole along the radial of resonant cavity 3, and the one of piezo-electric generating portion
It is partially in resonant cavity 3, the another part in piezo-electric generating portion is between resonant cavity 3 and shell 1.
Piezo-electric generating portion is used to resonate with wind energy and generate electricity.
The quantity in piezo-electric generating portion be it is multiple, the quantity in piezo-electric generating hole is identical with the quantity in piezo-electric generating portion, piezoelectricity send out
Electric hole is correspondingly arranged with piezo-electric generating portion, and a piezo-electric generating portion is only arranged in each piezo-electric generating hole.Each piezo-electric generating
Portion includes: 5, two bluff bodys 4 of a plate and two piezoelectric ceramic pieces 8.Each piezo-electric generating hole includes: a plate
Hole and two choked flow body openings, plate well and two choked flow body openings are arranged in the same horizontal line, and plate well is located at two choked flows
Among body opening.
The shape of bluff body 4 can be cylindrical body or cuboid or prism.
Multiple piezo-electric generating portions are uniformly arranged on resonant cavity 3, and are slided in piezo-electric generating hole along the radial of resonant cavity 3
It is dynamic.
The plate 5 in piezo-electric generating portion is arranged in the plate well in corresponding piezo-electric generating hole, and plate 5 is in plate well along humorous
Vibration chamber 3 radially slides；One end of plate 5 is in resonant cavity 3, and the other end of plate 5 is between resonant cavity 3 and shell 1.
The plate 5 in each piezo-electric generating portion is in the difference of the length in resonant cavity 3.
Piezoelectric ceramic piece 8 is respectively arranged on the upper and lower surfaces of the plate 5 inside resonant cavity 3.
The bluff body 4 in piezo-electric generating portion is arranged in the choked flow body opening in piezo-electric generating hole, is only arranged in each choked flow body opening
One bluff body 4, the radially sliding along resonant cavity 3 in choked flow body opening of bluff body 4, two bluff bodys 4 are located at plate 5 and lean on
The two sides of nearly wind gathering mouth 2；One end of bluff body 4 is in resonant cavity 3, and the other end of bluff body 4 is in resonant cavity 3 and shell 1
Between.
It is identical as the corresponding length of plate 5 that two bluff bodys 4 are in the length in resonant cavity 3.When the length of plate occurs
When change, the length that two bluff bodys corresponding with plate are in resonant cavity changes with the change of slab length.
The present embodiment 1 provides a kind of specific embodiment of piezo-electric generating portion power generation, and Fig. 5 is mentioned by the embodiment of the present invention 1
The structure principle chart in single piezo-electric generating portion in the piezoelectricity wind energy collecting device of confession, referring to Fig. 5, arrow direction indicates natural wind in figure
Wind direction, when natural wind flows through the bluff body 4 inside resonant cavity 3 with certain speed, can 4 rear of bluff body formed revolve
Vortex shedding, the vortex are asymmetrically alternately present and fall off at 4 rear of bluff body, so that piezo-electric generating portion upper and lower surface was subject to
Pressure generates cyclically-varying, and under the action of this periodically variable fluctuation pressure, plate 5 will generate forced vibration, pressure
Electroceramics piece 8 is vibrated with plate 5, and the direct piezoelectric effect of piezoelectric ceramic piece 8 converts vibrations into electric energy, to realize energy
Conversion and wind energy collection and utilization.
The material selection Light Aluminum Alloy of base support 7, resonant cavity 3 and wind gathering mouth 2, sub- gram of the material selection of bluff body 4
Dead-wood material, the material selection red copper of plate 5.The selection of material is advisable with light, practical.
Piezoelectricity wind energy collecting device further include: controller, controller are electrically connected with bluff body 4 and plate 5 respectively.
Controller is used to control bluff body 4 and plate 5 is in the length of 3 inner part of resonant cavity.
Piezo-electric generating portion further include: multiple displacement sensors；The quantity of displacement sensor and the number of plate 5 and bluff body 4
Amount summation is identical, and each plate 5 and each bluff body 4 are respectively provided with a displacement sensor, and displacement sensor is respectively arranged at flat
Plate 5 is on one end between resonant cavity 3 and shell 1 and bluff body 4 is on one end between resonant cavity 3 and shell 1；
Displacement sensor is electrically connected with the controller.
Displacement sensor is used to detect the location information of plate 5 and bluff body 4, and the location information that will test is sent to control
Device processed.
Piezoelectricity wind energy collecting device further include: motor, motor are connect with bluff body 4 and plate 5 respectively, motor and controller
Electrical connection.
Motor is used to adjust bluff body 4 and plate 5 is in the length of 3 inner part of resonant cavity.Motor selects linear motor,
The quantity of linear motor is identical as the quantity summation of plate 5 and bluff body 4, and each plate 5 and each bluff body 4 are all connected with one
Linear motor.Motor adjustment plate 5 is in the length of 3 inner part of resonant cavity, and bluff body 4 corresponding with adjustment plate 5 is in humorous
The length for 3 inner part of chamber of shaking is identical.
Embodiment 2
The present embodiment provides a kind of piezoelectricity wind energy collecting device control methods, the piezoelectricity wind energy collecting device applied to embodiment 1.
Fig. 6 is the flow chart of piezoelectricity wind energy collecting device control method provided by the embodiment of the present invention 2, referring to Fig. 6, control
Method includes:
Step 201, control motor adjusts the position of all plates to original state.Original state is the first of all plates
Beginning position, by the position of all plates adjust to original state will the positions of all plates adjust to initial position.Same time control
The position of bluff body corresponding with plate is adjusted by motor processed with flat position, i.e., adjusts the position of bluff body to initial
Position.
Step 202, the voltage value that all piezoelectric ceramic pieces generate is acquired.
Step 203, it according to the voltage value of acquisition, is determined by comparison and generates maximum first piezoelectric ceramic piece of voltage value.
Step 204, the data of the first displacement sensor on plate corresponding with the first piezoelectric ceramic piece are obtained.
Step 205, according to the data of the first displacement sensor, the position that motor adjusts all plates is controlled, all positions are made
The data of displacement sensor are identical as the data of the first displacement sensor.It also wraps later the position that control motor adjusts all plates
Include: control motor adjusts the position of all bluff bodys, keeps the position of bluff body identical as corresponding flat position.
Step 206, after setting time, control motor adjusts the position of all plates to original state, completes one
Secondary piezoelectricity wind energy collecting process.Control motor adjusts the position of all plates to original state further include: control motor
The position of all bluff bodys is adjusted to original state.
Embodiment 3
The present embodiment provides a kind of adaptive adjustable piezoelectricity wind energy collecting device, which includes:
Base support, resonant cavity, shell, piezo-electric generating portion and wind gathering mouth.
Base support is fixed on earth's surface；Base support includes: pedestal and support column, and the bottom end of support column is fixed in the base
Centre, base support is 1.5 meters high, and the diameter of support column is 0.15 meter；Pedestal fixes on the ground, the top of support column and resonant cavity
It is connected by bearing；Base support is used to support resonant cavity, makes resonant cavity far from earth's surface.Resonant cavity can be relative to base support
Can 360 degree be freely rotated.
Resonant cavity is cylindrical shape, and the cavity wall of resonant cavity is connect with base support by bearing, the cavity wall of further resonant cavity
It is connect with the top of support column by bearing.Resonant cavity is for putting piezo-electric generating portion；The outer diameter D of resonant cavityOutside=400 millimeters
(mm), the wall thickness s=25mm of cavity wall, the internal diameter D of resonant cavityIt is interior=350mm, the length L=600mm of resonant cavity.
Shell is cylindrical shape, and jacket is flexibly connected outside resonant cavity, and with base support；Shell is for protecting resonant cavity
It is few by wind and weather with piezo-electric generating portion etc., extend the service life of piezoelectricity wind energy collecting device；The outer surface of shell is additionally provided with sensing
Device system, sensing system is for measuring the earth's surfaces information such as face temperature, humidity and wind speed；Sensing system and piezo-electric generating portion
Electrical connection, piezo-electric generating portion power to sensing system.
The cavity wall of resonant cavity is equipped with piezo-electric generating hole, and piezo-electric generating portion is slided in piezo-electric generating hole along the radial of resonant cavity
Dynamic, a part in piezo-electric generating portion is in resonant cavity, and the another part in piezo-electric generating portion is between resonant cavity and shell.Pressure
Electric Power Generation Section is used to resonate with wind energy and generate electricity.
The quantity in piezo-electric generating portion be it is multiple, the quantity in piezo-electric generating hole is identical with the quantity in piezo-electric generating portion, piezoelectricity send out
Electric hole is correspondingly arranged with piezo-electric generating portion, and a piezo-electric generating portion is only arranged in each piezo-electric generating hole；Each piezo-electric generating
Portion includes: a plate, two bluff bodys and two piezoelectric ceramic pieces；Each piezo-electric generating portion Independent Power Generation, each other
It does not have an impact；Each piezo-electric generating hole includes: a plate well and two choked flow body openings, plate well and two choked flow body openings
It is arranged in the same horizontal line, and plate well is located among two choked flow body openings.
The shape of bluff body can be cylindrical body or cuboid or prism.
Multiple piezo-electric generating portions are uniformly arranged on resonant cavity, and are slided in piezo-electric generating hole along the radial of resonant cavity.
The plate in piezo-electric generating portion is arranged in the plate well in corresponding piezo-electric generating hole, and plate is in plate well along resonance
Chamber radially slides；One end of plate is in resonant cavity, and the other end of plate is between resonant cavity and shell.
The plate in each piezo-electric generating portion is in the difference of the length in resonant cavity.
Piezoelectric ceramic piece is respectively arranged in the upper and lower surfaces of the plate positioned at intra resonant cavity.
The bluff body in piezo-electric generating portion is arranged in the choked flow body opening in piezo-electric generating hole, is only arranged one in each choked flow body opening
A bluff body, bluff body radially sliding along resonant cavity in choked flow body opening, two bluff bodys are located at plate close to wind gathering
The two sides of mouth；One end of bluff body is in resonant cavity, and the other end of bluff body is between resonant cavity and shell.
It is identical as the corresponding length of plate always that two bluff bodys are in the length in resonant cavity.When the length of plate occurs
When change, the length that two bluff bodys corresponding with plate are in resonant cavity changes with the change of slab length.
When natural wind is flowed through with certain speed positioned at the bluff body of intra resonant cavity, vortex can be formed at bluff body rear
It falls off, which is asymmetrically alternately present and falls off at bluff body rear, so that the pressure that piezo-electric generating portion upper and lower surface is subject to
Power generates cyclically-varying, and under the action of this periodically pulsing pressure, plate will generate forced vibration, and piezoelectric ceramic piece is with flat
Plate vibrates, the direct piezoelectric effect of piezoelectric ceramic piece converts vibrations into electric energy, to realize the conversion and wind energy of energy
It collects and utilizes.
Fig. 7 is that power circuit figure is collected in piezo-electric generating portion provided by the embodiment of the present invention 3, referring to Fig. 7, piezoelectric ceramic piece
It is connect with battery 9 by conducting wire, constitutes circuit, the electric energy that piezoelectric ceramic piece is converted is exported and stored by battery 9；Each pressure
Piezoelectric ceramic piece in electric Power Generation Section is connect with battery 9 by conducting wire.Battery 9 can be placed on pedestal, battery 9
Detachably.The preferred lead-acid accumulator of battery 9 is cathode, brown lead oxide (PbO with spongy lead2) anode is done, electrolyte uses
Density is 1.25~1.28g/cm3Sulfuric acid solution.
The quantity of wind gathering mouth is two, and the both ends of resonant cavity are respectively fixedly connected with a wind gathering mouth.Wind gathering mouth is for assembling
Natural wind collects wind energy.The shape of wind gathering mouth can be also possible to hemispherical to be horn-like.
Base support, resonant cavity, wind gathering mouth material selection Light Aluminum Alloy, bluff body material selection acrylic material are put down
Plate selects red copper.The selection of material is advisable with light, practical.
Piezoelectricity wind energy collecting device further include: directional plate, the length of directional plate are greater than the maximum gauge of wind gathering mouth, and directional plate is viscous
It is connected in the outer surface of a wind gathering mouth, or is fixedly connected with wind gathering mouth outer surface；The plate face of directional plate is perpendicular to the ground.
Directional plate drives resonant cavity rotation under the action of the wind, makes wind gathering mouth resonant cavity passively windward.Resonant cavity
Side is fixedly connected is common wind gathering mouth, the other side is the wind gathering mouth of adhesion directional plate, directional plate under the action of the wind,
Moment loading can be generated, the upper part including resonant cavity is driven integrally to rotate relative to base support, makes one to gather
Passively windward, face wind direction utmostly utilizes wind energy to air port resonant cavity.Wherein, the wind gathering mouth of resonant cavity two sides all can be just
Face is windward.
Piezoelectricity wind energy collecting device further include: controller, controller are electrically connected with bluff body, plate respectively.
Controller is used to control bluff body, plate is in the length that intra resonant cavity is divided.
Piezo-electric generating portion further include: multiple displacement sensors；The quantity of displacement sensor and the quantity of plate and bluff body
Summation is identical, and each plate and each bluff body are respectively provided with a displacement sensor, and displacement sensor is respectively arranged at plate
On one end between resonant cavity and shell and bluff body is on one end between resonant cavity and shell；Displacement sensor
It is electrically connected with the controller.
Displacement sensor is used to detect the location information of plate and bluff body, and the location information that will test is sent to control
Device.
Piezoelectricity wind energy collecting device further include: motor, motor are connect with bluff body, plate respectively, and motor is electrically connected with controller
It connects.
Motor is used to adjust bluff body, plate is in the length that intra resonant cavity is divided；Motor selects linear motor, straight-line electric
The quantity of machine is identical as the quantity summation of plate and bluff body, and each plate and each bluff body are all connected with a linear motor.
Controller and linear motor can be placed in the space between shell and resonant cavity.
The present invention provides a kind of specific embodiment of adaptive adjustable piezoelectricity wind energy collecting device, wherein piezoelectricity hair
The quantity in electric portion is eight groups, and eight groups of piezo-electric generating portions are evenly distributed on resonance cavity wall；Every group of piezo-electric generating portion includes: one
Plate, two bluff bodys and two piezoelectric ceramic pieces；The size of plate is 120mm × 26.5mm × 0.2mm, and material selection is purple
Copper.
Eight plates are respectively I plate, II plate, III plate, IV plate, V plate, VI plate, VII plate and VIII plate.Eight plates are in resonance
Intracavitary length is different, and the length of eight plates is followed successively by LⅠ=90mm, LⅡ=85mm, LⅢ=80mm, LⅣ=75mm, LⅤ=
70mm、LⅥ=65mm, LⅦ=60mm, LⅧ=55mm, the distribution straggly of plate length in resonant cavity, mutual position does not occur
Interference.
Upper and lower surface of the plate in resonant cavity posts piezoelectric ceramic piece, the size of piezoelectric ceramic piece be 30mm × 16mm ×
0.5mm.Bluff body selects the cylindrical body of acrylic material, having a size of diameter D=15mm, length L=120mm, plate two sides
Bluff body shares the same plate.
Eight groups of piezo-electric generating portion Independent Power Generations, do not have an impact each other；When natural wind passes through wind gathering mouth from resonant cavity
One end when entering, the piezo-electric generating portion of corresponding side can be motivated to generate voltage and current.
The length that 8 plates are in resonant cavity meets LⅠ-LⅡ=LⅡ-LⅢ=LⅢ-LⅣ=LⅣ-LⅤ=LⅤ-LⅥ=LⅥ-LⅦ
=LⅦ-LⅧ=d=5mm, i.e. slab length can increase wind shake vibration resonance frequency response model in different ranks in this way
It encloses, to improve the ability that each plate collects electric energy in off-resonance frequence.At corresponding two bluff bodys of each plate
It is identical as the length of plate in the length in resonant cavity.8 plates are distributed in resonant cavity according to certain arrangement rule, i.e., and eight
A plate shares a center of circle, is successively I plate, VIII plate, II plate, VII plate, III plate, VI plate, IV plate, V plate clockwise, can be most
Big degree utilizes space.
The specific adjustment process of piezoelectricity wind energy collecting device are as follows:
Fig. 8 is figure before the structure distribution in piezo-electric generating portion provided by the embodiment of the present invention 3 is adjusted, and referring to Fig. 8, works as nature
When wind is entered by wind gathering mouth from one end of resonant cavity, the piezo-electric generating portion of 8 plates of different length can be produced in synchronization
8 voltages are given birth to, the voltage that the piezoelectric ceramic piece on I plate of plate in I group of piezo-electric generating portion 10 generates is VⅠ, II group of piezo-electric generating portion
The voltage that piezoelectric ceramic piece on 11 II plate of plate generates is VⅡ, piezoelectricity pottery on III plate of plate in III group of piezo-electric generating portion 12
The voltage that tile generates is VⅢ, the voltage that the piezoelectric ceramic piece on IV plate of plate in IV group of piezo-electric generating portion 13 generates is VⅣ, V
The voltage that piezoelectric ceramic piece on V plate of plate in group piezo-electric generating portion 14 generates is VⅤ, the plate VI in VI group of piezo-electric generating portion 15
The voltage that piezoelectric ceramic piece on plate generates is VⅥ, what the piezoelectric ceramic piece on VII plate of plate in VII group of piezo-electric generating portion 16 generated
Voltage is VⅦ, the voltage that the piezoelectric ceramic piece on VIII plate of plate in VIII group of piezo-electric generating portion 17 generates is VⅧ, that is, generate one group of electricity
Press V={ VⅠ, VⅡ, VⅢ, VⅣ, VⅤ, VⅥ, VⅦ, VⅧ}.Controller obtains this group of voltage V={ VⅠ, VⅡ, VⅢ, VⅣ, VⅤ, VⅥ, VⅦ, VⅧ,
And maximum voltage, i.e. V are selected from this group of voltagemax∈{VⅠ, VⅡ, VⅢ, VⅣ, VⅤ, VⅥ, VⅦ, VⅧ}。
Fig. 9 is to scheme after the structure distribution in 3 piezo-electric generating portion of the embodiment of the present invention is adjusted, referring to Fig. 9, it is assumed that I plate generated
Voltage VⅠ=Vmax, then controller obtains the data of displacement sensor on I plate, and control linear motor makes II plate, III plate, IV plate, V
Plate, VI plate, VII plate, VIII plate stretch out the length of resonance cavity wall and the equal length of I plate stretching resonance cavity wall, that is, meet LⅡ=
LⅢ=LⅣ=LⅤ=LⅥ=LⅦ=LⅧ=LⅠ=90mm, while linear motor adjusts II plate, III plate, IV plate, V plate, VI plate, VII
Length two bluff bodys corresponding with I plate that corresponding 14 bluff bodys of plate, VIII plate stretch out resonance cavity wall stretch out resonance
The equal length of cavity wall, when the data that each displacement sensor detects are identical as the data of displacement sensor on I plate, control
Device processed stops the mobile plate of control linear motor.
When the data that each displacement sensor detects are identical as the data of displacement sensor on I plate, I plate, II plate, III
Plate, IV plate, V plate, VI plate, VII plate, the vibration frequency of VIII plate and wind shake frequency are the most close, and each plate is closest to preferably
Resonance, piezo-electric generating effect is best at this time, and each plate is kept to stretch out two hours of length of resonance cavity wall.
After two hours, controller control linear motor restores the length of each plate to the length initially demarcated, i.e. LⅠ
=90mm, LⅡ=85mm, LⅢ=80mm, LⅣ=75mm, LⅤ=70mm, LⅥ=65mm, LⅦ=60mm, LⅧ=55mm.
Controller reacquires the voltage that piezoelectric ceramic piece generates on each plate, chooses maximum voltage therein, obtains
The data of the corresponding displacement sensor of plate belonging to the piezoelectric ceramic piece of maximum voltage are generated, linear motor adjustment is then controlled
The extension elongation of each plate makes all plates reach maximum resonance；Piezoelectricity collection process every two hours forms a circulation.When
When the intrinsic frequency of the piezoelectric vibrator of the piezoelectric ceramic piece of the piezoelectricity wind energy collecting device of wind shake frequency and present embodiment matches,
The output power of piezoelectric ceramic piece reaches maximum, about 0.6mW.
The number of plate can increase or reduce with actual conditions using 8 plates as standard；The stretching of bluff body and plate
Length is controlled by controller；The overall dimensions of piezoelectric ceramic piece are less than plate, and the thickness of plate is smaller；Bluff body can be circle
Cylinder, cuboid, prism.In addition, resonant cavity can when the length that plate and bluff body are in resonant cavity reaches specified value
Plate and bluff body to be fixedly clamped.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of piezoelectricity wind energy collecting device characterized by comprising base support, resonant cavity, shell, piezo-electric generating portion and poly-
Air port；
The base support is fixed on earth's surface；The base support is used to support the resonant cavity, makes the resonant cavity remotely
Table；
The resonant cavity is cylindrical shape, and the cavity wall of the resonant cavity is connect with the base support by bearing；The resonant cavity
For putting the piezo-electric generating portion；
The shell is cylindrical shape, and the jacket is flexibly connected outside the resonant cavity, and with the base support；It is described outer
Shell is for protecting the resonant cavity and the piezo-electric generating portion；
The cavity wall of the resonant cavity is equipped with piezo-electric generating hole, and the piezo-electric generating portion is along the radial in the piezoelectricity of the resonant cavity
Power generation is slided in hole, and a part in the piezo-electric generating portion is in the resonant cavity, the another part in the piezo-electric generating portion
Between the resonant cavity and the shell；The piezo-electric generating portion is used to resonate with wind energy and generate electricity；
The quantity of the wind gathering mouth is two, and the both ends of the resonant cavity are respectively fixedly connected with the wind gathering mouth；It is described poly-
Air port is for assembling wind energy.
2. piezoelectricity wind energy collecting device according to claim 1, which is characterized in that the quantity in the piezo-electric generating portion is more
It is a, the quantity in the piezo-electric generating hole be it is multiple, the quantity in the piezo-electric generating hole is identical as the quantity in the piezo-electric generating portion,
Each piezo-electric generating portion includes: a plate, two bluff bodys and two piezoelectric ceramic pieces；
Multiple piezo-electric generating portions are uniformly arranged on the resonant cavity；
The plate slides in the piezo-electric generating hole；One end of the plate is in the resonant cavity, the plate
The other end is between the resonant cavity and the shell；
Each plate is in the difference of the length in the resonant cavity；
The piezoelectric ceramic piece is respectively arranged on the upper and lower surfaces of the plate positioned at the intra resonant cavity；
The bluff body slides in the piezo-electric generating hole, and is located at the plate close to the two sides of the wind gathering mouth；It is described
One end of bluff body is in the resonant cavity, and the other end of the bluff body is between the resonant cavity and the shell；
It is identical as the length of the corresponding plate that two bluff bodys are in the length in the resonant cavity.
3. piezoelectricity wind energy collecting device according to claim 2, which is characterized in that the piezoelectricity wind energy collecting device further include:
Controller, the controller are electrically connected with the bluff body and the plate respectively；
The controller is used to control the bluff body and the plate is in the length of the intra resonant cavity point.
4. piezoelectricity wind energy collecting device according to claim 3, which is characterized in that the piezo-electric generating portion further include: multiple
Displacement sensor；Institute's displacement sensors are set to the plate and are on one end between the resonant cavity and the shell,
And the bluff body is on one end between the resonant cavity and the shell；Institute's displacement sensors and the controller
Electrical connection；
Institute's displacement sensors are used to detect the location information of the plate and bluff body, and the location information that will test is sent to
The controller.
5. piezoelectricity wind energy collecting device according to claim 4, which is characterized in that the piezoelectricity wind energy collecting device further include:
Motor, the motor are connect with the controller, the bluff body and the plate respectively；
The motor is used to adjust the bluff body and the plate is in the length of the intra resonant cavity point.
6. piezoelectricity wind energy collecting device according to claim 1, which is characterized in that the piezoelectricity wind energy collecting device further include:
Directional plate, the directional plate are adhered to the outer surface of a wind gathering mouth；
The directional plate makes the wind gathering mouth and the resonant cavity quilt under the action of the wind, driving the resonant cavity to rotate
It moves windward.
7. piezoelectricity wind energy collecting device according to claim 2, which is characterized in that the shape of the bluff body be cylindrical body or
Cuboid or prism.
8. a kind of piezoelectricity wind energy collecting device control method, which is characterized in that be applied to as described in claim 5~7 any one
Piezoelectricity wind energy collecting device；
The control method includes:
Control motor adjusts the position of all plates to original state；
Acquire the voltage value that all piezoelectric ceramic pieces generate；
According to the voltage value of acquisition, is determined by comparison and generate maximum first piezoelectric ceramic piece of voltage value；
Obtain the data of the first displacement sensor on plate corresponding with first piezoelectric ceramic piece；
According to the data of first displacement sensor, the position that the motor adjusts all plates is controlled, all institutes are made
The data of displacement sensors are identical as the data of first displacement sensor；
After setting time, controls the motor and adjust the position of all plates to the original state, complete one
Secondary piezoelectricity wind energy collecting process.
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