CN206790375U - A kind of acoustic energy retracting device - Google Patents
A kind of acoustic energy retracting device Download PDFInfo
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- CN206790375U CN206790375U CN201720660172.0U CN201720660172U CN206790375U CN 206790375 U CN206790375 U CN 206790375U CN 201720660172 U CN201720660172 U CN 201720660172U CN 206790375 U CN206790375 U CN 206790375U
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- piezoelectric
- pedestal
- acoustic
- disc oscillator
- resonant cavity
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002889 sympathetic effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of acoustic energy retracting device, belongs to novel energy harvester field, it is intended to and it can reclaim acoustic energy and convert acoustic energy into electric energy, including sound amplifying device harmony electrical switching device；Wherein, the sound amplifying device includes the Hall nurse that is made up of conical acoustic wave conduit and sonic resonant cavity hereby acoustic resonator；The acoustic-electric conversion equipment includes disc oscillator, the disc oscillator is located at sonic resonant cavity bottom, side of the disc oscillator away from conical acoustic wave conduit is provided with circular piezoelectric piece, opposite side is provided with pedestal, the pedestal is provided with piezoelectric cantilever, piezoelectric patches is provided with above the piezoelectric cantilever, side of the piezoelectric patches away from pedestal and away from piezoelectric cantilever is provided with mass；The acoustic waveguide tube, sonic resonant cavity, disc oscillator and circular piezoelectric piece symmetry axis on the same line, and the pedestal is located at disc oscillator circle centre position.
Description
Technical field
The present invention relates to novel energy harvester field, more particularly to a kind of acoustic energy retracting device.
Background technology
The low-consumption wireless electronic device such as wireless senser, MEMS is developed rapidly in recent years, how for
It, which is energized, becomes a key technology for needing to solve at present.The development of present battery capacity increasing technique lags far behind radio
The development of sub- device, the needs of special dimension microelectronic component power supply can not be met.At present, new energy supply (energy-autarchic) is carried out
Technical research, seeking a kind of self energizing new energy that can replace battery turns into the key technical problem for being currently needed for solving.
The sight of research is concentrated available potential energy source, including acoustic energy, solar energy, heat in the environment by people in recent years
Energy, tide energy, biological energy source and mechanical vibrational energy etc..Wherein acoustic energy is relatively broad is present in natural environment, and unlike luminous energy,
Heat energy etc. is limited by natural conditions, so the acoustic energy in environment to be directly changed into the energy supply energy of low-power consumption micro device
Have broad application prospects, acoustic energy is ubiquitous in natural environment, therefore how to be returned the acoustic energy in natural environment
Harvest is for urgent problem.
The content of the invention
The technical problems to be solved by the invention are how the acoustic energy in natural environment to be carried out into recovery to be converted into electric energy.
The present invention above-mentioned technical problem technical scheme is that：A kind of acoustic energy retracting device, bag
Include sound amplifying device harmony electrical switching device；
Wherein, the sound amplifying device includes the Hall nurse hereby sympathetic response being made up of conical acoustic wave conduit and sonic resonant cavity
Device；
The acoustic-electric conversion equipment includes disc oscillator, and the disc oscillator is located at sonic resonant cavity bottom, the disk
Side of the oscillator away from conical acoustic wave conduit is provided with circular piezoelectric piece, and opposite side is provided with pedestal, and the pedestal hangs provided with piezoelectricity
Arm beam, the piezoelectric cantilever are provided with piezoelectric patches, and side of the piezoelectric patches away from pedestal and away from piezoelectric cantilever is provided with
Mass；
The acoustic waveguide tube, sonic resonant cavity, disc oscillator and circular piezoelectric piece symmetry axis on the same line, and institute
State pedestal and be located at disc oscillator circle centre position.
Further, conductive gluing knot is passed through between the circular piezoelectric piece and disc oscillator.
Further, it is gluing by insulating between the pedestal and disc oscillator and between mass and piezoelectric patches
Knot, passes through conductive gluing knot between the piezoelectric patches and piezoelectric cantilever.
Further, the length of the conical acoustic wave conduit is equal to the thickness of sonic resonant cavity upper wall.
Further, the diameter of the disc oscillator is equal to the external diameter of sonic resonant cavity.
Further, the pedestal and mass are metal derby.
Further, the piezoelectric cantilever is thin bonding jumper.
The present invention compared with prior art, has following technique effect using above technical scheme：
When sound incides conical acoustic wave conduit, incident acoustic wave is through conical acoustic wave ducted propagation, by sonic resonant cavity pair
Acoustic pressure is amplified, and for exaggerated sound wave effect on disc oscillator, disc oscillator vibration can drive circular piezoelectric piece and piezoelectric cantilever
Beam vibration is bent, and produces deformation, then is pasted onto disc oscillator with being pasted onto the piezoelectric patches of cantilever beam upper surface and also produces shape therewith
Become, because piezoelectric patches is the piezoelectric that has piezo-electric effect, can cause when piezoelectric patches produces deformation and be produced on piezoelectric patches surface
Raw equivalent positive and negative charge, and then the upper and lower surface of piezoelectric patches will produce electrical potential difference, circular piezoelectric piece and piezoelectric patches can use
Form in parallel can also use the form of series connection, can increase output voltage when in parallel, can increase output current during series connection,
Therefore acoustic energy can be reclaimed by the cooperation of sound amplifying device harmony electrical switching device and is converted to electric energy.
Brief description of the drawings
Fig. 1 is the structural representation that the present embodiment is used to embody tapered wave-guide；
Fig. 2 is the structural representation that the present embodiment is used to embody；
Fig. 3 is the schematic cross-section that the present embodiment is used to embody pedestal；
Fig. 4 is the schematic cross-section that the present embodiment is used to embody piezoelectric patches.
In figure, 1, conical acoustic wave conduit；2nd, sonic resonant cavity；3rd, disc oscillator；4th, circular piezoelectric piece；5th, pedestal；6th, matter
Gauge block；7th, cantilever beam；8th, piezoelectric patches.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment：A kind of acoustic energy retracting device, as shown in figure 1, including sound amplifying device harmony electrical switching device.
As shown in figure 1, wherein, sound amplifying device includes the Hall being made up of conical acoustic wave conduit 1 and sonic resonant cavity 2
Nurse hereby acoustic resonator.
As shown in figure 3, the internal diameter of conical acoustic wave conduit 1 from top to bottom tapers into, the length of conical acoustic wave conduit 1 is equal to
The thickness of the upper wall of sonic resonant cavity 2, and the pipe wall thickness of conical acoustic wave conduit 1 is equal to the external diameter of sonic resonant cavity 2 and conical acoustic wave
The difference of the radius of conduit 1.
As shown in Fig. 2 acoustic-electric conversion equipment includes disc oscillator 3, disc oscillator 3 is located at the bottom of sonic resonant cavity 2, and circle
The diameter of disk oscillator 3 is equal to the external diameter of sonic resonant cavity 2, and circle is provided with side of the disc oscillator 3 away from conical acoustic wave conduit 1
Piezoelectric patches 4, pedestal 5 is provided with by conductive gluing knot, opposite side between circular piezoelectric piece 4 and disc oscillator 3.
As shown in figure 1, conical acoustic wave conduit 1, sonic resonant cavity 2, the symmetry axis of disc oscillator 3 and circular piezoelectric piece 4 exist
On same straight line, and pedestal 5 is located at the circle centre position of disc oscillator 3.
As shown in figure 3, being provided with piezoelectric cantilever 7 above pedestal 5, one end of piezoelectric cantilever 7 and pedestal 5 are away from disk
The side connection of oscillator 3, is provided with piezoelectric patches 8, piezoelectric patches 8 is away from pedestal 5 and away from piezoelectric cantilever above piezoelectric cantilever 7
7 side is provided with mass 6.
As shown in figure 4, pedestal 5 and mass 6 are metal derby, piezoelectric cantilever 7 is thin bonding jumper.
It is as shown in figure 4, gluing by insulating between pedestal 5 and disc oscillator 3 and between mass 6 and piezoelectric patches 8
Knot, passes through conductive gluing knot between piezoelectric patches 8 and piezoelectric cantilever 7.
Specific implementation is described as follows：
When sound incides conical acoustic wave conduit 1, incident acoustic wave is propagated through conical acoustic wave conduit 1, by sonic resonant cavity 2
Acoustic pressure is amplified, for exaggerated sound wave effect on disc oscillator 3, the vibration of disc oscillator 3 can drive circular piezoelectric piece 4 and piezoelectricity
The vibration bending of cantilever beam 7, produces deformation, then be pasted onto disc oscillator 3 and be pasted onto the piezoelectric patches 8 of the upper surface of cantilever beam 7 also with
Generation deformation, because piezoelectric patches 8 is the piezoelectric that has piezo-electric effect, piezoelectricity can be caused when piezoelectric patches 8 produces deformation
Equivalent positive and negative charge is produced on the surface of piece 8, and then the upper and lower surface of piezoelectric patches 8 will produce electrical potential difference, circular piezoelectric piece 4 and pressure
Electric piece 8 can use form in parallel to use the form of series connection, can increase output voltage when in parallel, can be with during series connection
Increase output current, therefore by the cooperation of sound amplifying device harmony electrical switching device acoustic energy can be reclaimed and filled and be changed to electricity
Energy.
Furthermore it is possible to conical acoustic wave conduit 1, sonic resonant cavity 2, piezoelectricity are designed according to the main band of sound source in device context
The physical dimension of cantilever beam 7 and disc oscillator 3, make Hall the nurse hereby resonant frequency of acoustic resonator, disc oscillator 3 and piezoelectric cantilever
The intrinsic frequency of the piezoelectric transducer device of 7 compositions is in the dominant frequency frequency band, then transducer is in resonance shape when the device works
State, under resonance conditions, acoustics Hall nurse that conical acoustic wave conduit 1 and sonic resonant cavity 2 form hereby acoustic resonator than conventional Hall nurse
Hereby acoustic resonator is bigger to the multiplication factor of sound wave, and effective bandwidth is wider, is pasted on the disc oscillator 3 for being stained with circular piezoelectric piece 4
Piezoelectric cantilever 7 not only reduces the resonant frequency of piezo disc oscillator 3, and improves acoustic-electric coupling efficiency, has higher
Output voltage and electrical power, it is that a kind of frequency band is optional, the efficient acoustic energy retracting device that can integrate, solves due to piezo disc
The resonant frequency height of oscillator 3 can not be with the Hall nurse technical problem that hereby acoustic resonator resonates.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Claims (7)
1. a kind of acoustic energy retracting device, it is characterized in that：Including sound amplifying device harmony electrical switching device；
Wherein, the Hall nurse that the sound amplifying device includes being made up of conical acoustic wave conduit (1) and sonic resonant cavity (2) is hereby common
Ring device；
The acoustic-electric conversion equipment includes disc oscillator (3), and the disc oscillator (3) is located at sonic resonant cavity (2) bottom, described
Side of the disc oscillator (3) away from conical acoustic wave conduit (1) is provided with circular piezoelectric piece (4), and opposite side is provided with pedestal (5), described
Pedestal (5) is provided with piezoelectric cantilever (7), and piezoelectric patches (8) is provided with above the piezoelectric cantilever (7), and the piezoelectric patches (8) is remote
From pedestal (5) and the side away from piezoelectric cantilever (7) is provided with mass (6)；
The conical acoustic wave conduit (1), sonic resonant cavity (2), the symmetry axis of disc oscillator (3) and circular piezoelectric piece (4) are same
On one straight line, and the pedestal (5) is located at disc oscillator (3) circle centre position.
2. a kind of acoustic energy retracting device according to claim 1, it is characterized in that：The circular piezoelectric piece (4) is shaken with disk
Pass through conductive gluing knot between sub (3).
3. a kind of acoustic energy retracting device according to claim 1, it is characterized in that：The pedestal (5) and disc oscillator (3) it
Between and mass (6) and piezoelectric patches (8) between by the gluing knot that insulate, the piezoelectric patches (8) and piezoelectric cantilever (7) it
Between pass through conductive gluing knot.
4. a kind of acoustic energy retracting device according to claim 1, it is characterized in that：The length of the conical acoustic wave conduit (1)
Equal to the thickness of sonic resonant cavity (2) upper wall.
5. a kind of acoustic energy retracting device according to claim 1, it is characterized in that：The diameter of the disc oscillator (3) is equal to
The external diameter of sonic resonant cavity (2).
6. a kind of acoustic energy retracting device according to claim 1, it is characterized in that：The pedestal (5) and mass (6) are
Metal derby.
7. a kind of acoustic energy retracting device according to claim 1, it is characterized in that：The piezoelectric cantilever (7) is thin metal
Bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720660172.0U CN206790375U (en) | 2017-06-08 | 2017-06-08 | A kind of acoustic energy retracting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720660172.0U CN206790375U (en) | 2017-06-08 | 2017-06-08 | A kind of acoustic energy retracting device |
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| Publication Number | Publication Date |
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| CN206790375U true CN206790375U (en) | 2017-12-22 |
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| CN201720660172.0U Expired - Fee Related CN206790375U (en) | 2017-06-08 | 2017-06-08 | A kind of acoustic energy retracting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147329A (en) * | 2017-06-08 | 2017-09-08 | 南京邮电大学 | A kind of acoustic energy retracting device |
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2017
- 2017-06-08 CN CN201720660172.0U patent/CN206790375U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107147329A (en) * | 2017-06-08 | 2017-09-08 | 南京邮电大学 | A kind of acoustic energy retracting device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230406 Address after: 13th Floor, IoT Technology Park Building, No. 38 Guangdong Road, Gulou District, Nanjing, Jiangsu Province, 210003 Patentee after: Hongzhen Technology Co.,Ltd. Address before: 210003, 66 new model street, Gulou District, Jiangsu, Nanjing Patentee before: NANJING University OF POSTS AND TELECOMMUNICATIONS |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 |