CN104270032A - Bistable state spherical surface composite cantilever piezoelectric power generation device - Google Patents
Bistable state spherical surface composite cantilever piezoelectric power generation device Download PDFInfo
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- CN104270032A CN104270032A CN201410494118.4A CN201410494118A CN104270032A CN 104270032 A CN104270032 A CN 104270032A CN 201410494118 A CN201410494118 A CN 201410494118A CN 104270032 A CN104270032 A CN 104270032A
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Abstract
The invention discloses a bistable state spherical surface composite cantilever piezoelectric power generation device. The device comprises a beam frame and a spherical shell. A circular opening is formed in the bottom of the shell. The beam frame and the shell are fixed to a base. The vibration of the beam frame can make piezoelectric cantilevers to deform, and when the piezoelectric cantilevers deform, electric energy can be produced due to the piezoelectric effect. The number of the piezoelectric cantilevers is twenty-five, and the piezoelectric cantilevers are evenly and annularly distributed among layers. The inherent non-linear characteristic of a bistable state piezoelectric power generation system is utilized, piezoelectric cantilever oscillators are made to do stochastic resonance through the combined action of the environment vibration excitation and magnetic force, the low resonant frequency and larger amplitude are achieved, and therefore the produced electric quantity is relatively large. According to the bistable state spherical surface composite cantilever piezoelectric power generation device, twenty-five piezoelectric oscillator structures are arranged, the lengths of the adjacent cantilevers in the same plane are different, and a wide resonance frequency domain can be formed, and the electric energy production can be obviously increased through the piezoelectric oscillator structures.
Description
Technical field
The present invention relates to a kind of bistable state sphere composite cantilever piezoelectric generating device, the vibration mechanical energy effectively can collecting surrounding environment generates electricity, and belongs to power-saving technology and regenerated environment protecting new energy field.
Background technology
Along with the fast development of microelectronics and wireless network, from environment, catch energy is that low power consuming devices is powered or become urgent demand for storage battery power supply; Conventional batteries is powered and is had a series of drawback, and the such as life-span is short, need periodic replacement, contaminated environment etc.; Which bar drawback all has a strong impact on the development of microelectric technique; Therefore, utilize ambient vibration produce power for power electronic equipment be necessary.
The features such as it is relatively large that cantilever type piezoelectric oscillator has amplitude, and vibration frequency is low, its application is very strong.Chinese patent (publication number CN101764531A) discloses a kind of multi-operation mode piezoelectric generator, will be operated in Tension and Compression mode and be operated in the different parts that the piezoelectric element impacting mode is integrated in piezoelectric generator.When generator up-down vibration, piezoelectric patches or because knocking or producing electric energy because of Tension and Compression.Chinese patent (publication number CN102790547A) discloses a kind of bistable state double cantilever beam piezoelectric generating device, and this invention arranges two symmetrical bistable state piezoelectric cantilever oscillators in a device simultaneously, effectively raises energy output.Chinese patent (publication number CN102790548A) discloses a kind of bistable composite cantilever beam piezoelectric generating device, and this invention arranges eight bistable state piezoelectric cantilever oscillators in a device simultaneously, and great improves generating effect.United States Patent (USP) (publication number WO2010151738A3) discloses a kind of bistable state piezoelectric cantilever generators, has effectively widened the resonance bands of cantilever beam, but the degree of bandwidth broadning is not very large.
Summary of the invention
In order to effectively widen effective frequency domain of piezoelectric generating device, make the increase of its bandwidth, resonance frequency reduces, voltage increases, the invention provides a kind of bistable state sphere composite cantilever piezoelectric generating device, by introducing 25 piezoelectric vibrators in minimum space, can effectively increase generating effect, reduce the volume of Blast Furnace Top Gas Recovery Turbine Unit (TRT), make it the development that more compound is micro electronmechanical.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is bistable state sphere composite cantilever piezoelectric generating device, and this device comprises roof beam structure 10, housing 14; Described housing 14 is spheroidal, and circular open has been cut in bottom; Roof beam structure 10 and housing 14 are fixed on pedestal separately.
Roof beam structure 10 comprises fixing ball 11, piezoelectric cantilever 12, support bar 13; Fixing ball 11 is fixedly connected with piezoelectric cantilever 12; Support bar 13 supports fixing ball 11, and support bar 13 is fixedly connected with fixing ball 11; Roof beam structure 10 is core textures of the present invention, and the vibration of roof beam structure 10 can cause the distortion of piezoelectric cantilever 12, can produce electric energy when deformation occurs piezoelectric cantilever 12 because of piezoelectric effect; The quantity of piezoelectric cantilever 12 is 25, is divided into four layers, and ground floor is one, second, third, the 4th layer each uniform eight, between described each interlayer piezoelectric cantilever 12 in evenly, annular spread; Support bar 13 is the supporting construction of roof beam structure 10, and support bar 13 is arranged on the fixing ball 11 symmetrical with the piezoelectric cantilever 12 of ground floor, and support bar 13 is fixedly connected on fixing ball 11 by the circular open bottom housing 14.
Piezoelectric cantilever 12, permanent magnet composition bistable state piezoelectric cantilever oscillator structure; Piezoelectric cantilever 12 comprises the first protective layer 1, lead-in wire the 2, first piezoelectric layer 3, basic unit 4, second protective layer 7, second piezoelectric layer 8, electrode 9; Wherein, interlayer annexation is followed successively by the first protective layer 1, first piezoelectric layer 3, basic unit 4, second protective layer 7, second piezoelectric layer 8, is gluing laminating between each layer; Described electrode 9 is provided with lead-in wire 2, and lead-in wire 2 is drawn from electrode 9, and piezoelectric cantilever 12 is out of shape the electric charge produced and can be gathered on electrode 9, and the electric charge gone between in 2 extraction electrodes 9 forms electric current.
Permanent magnet comprises the first permanent magnet 5, second permanent magnet 6, and described first permanent magnet 5 and the second permanent magnet 6 are rectangular magnet and mutually repel placement; Described piezoelectric cantilever 12 one end is fixed with the first permanent magnet 5, housing 14 inwall of homonymy is fixed with the second permanent magnet 6 with described first permanent magnet 5 same level position, described first permanent magnet 5 and the second permanent magnet 6 identical in quality, and staggered relatively according to magnetic pole;
Described piezoelectric cantilever 12 is symmetrical structures, and the length of the first protective layer 1, second protective layer 7 is equal, width is equal, and the length of the first piezoelectric layer 3, second piezoelectric layer 8 is equal, width is equal; The length of described first piezoelectric layer 3, basic unit 4 is identical, width is identical, and object is convenient to laminating, and obtain larger piezo area; Length and the width of described first protective layer 1 are all greater than the first piezoelectric layer 3, and object enables protective layer wrap up piezoelectric layer and basic unit 4, form enclosed construction; The parameter of two bistable state piezoelectric cantilever oscillator structures of symmetrical layout is consistent, and the parameter of the bistable state piezoelectric cantilever oscillator structure of adjacent layout is different; The width of nine piezoelectric cantilevers 12 of described first and third layer is equal, length is equal; The width of 16 piezoelectric cantilevers 12 of described second, four layers is equal, length is equal; The width of the piezoelectric cantilever 12 of first and second layer described is different, length is different, obtains larger frequency range when object is to vibrate.
Eight bistable state piezoelectric cantilever oscillators on described same plane are connected in series, and the bistable state piezoelectric cantilever oscillator in Different Plane is connected in parallel.
Compared with prior art, the invention has the beneficial effects as follows:
1, bistable state piezoelectric power generation system unintentional nonlinearity characteristic is utilized, ambient vibration excitation and magnetic force acting in conjunction under make piezoelectric cantilever oscillator generation accidental resonance, compared with conventional piezoelectric cantilever beam oscillator, the non-linear behavior of bistable system is more obvious, there is lower resonance frequency and larger amplitude, so the electricity produced is also relatively many.
2, the present invention comprises 25 piezoelectric vibrator structures, and the length of cantilever beam adjacent in same plane is different, will form wider resonance frequency domain, and the piezoelectric vibrator structure of quantity like this can obvious increasing electricity output.
3,25 piezoelectric vibrator structures are fixed on same sphere, the volume of piezoelectric generating device can be effectively reduced, be more suitable for the growth requirement of micro electronmechanical product.
Accompanying drawing explanation
Fig. 1 is the front view of bistable state piezoelectric cantilever oscillator structure in the present invention;
Fig. 2 is the perspective view of bistable composite cantilever beam piezoelectric generating device of the present invention;
Fig. 3 is the upward view of bistable composite cantilever beam piezoelectric generating device of the present invention;
Fig. 4 is the front view of bistable composite cantilever beam piezoelectric generating device of the present invention;
Fig. 5 is the perspective view of middle beam frame structure of the present invention;
Fig. 6 is the perspective view of middle shell structure of the present invention;
Fig. 7 is repulsive force effect schematic diagram between first, second permanent magnet in same bistable state piezoelectric cantilever oscillator structure;
In figure: 1, the first protective layer, 2, lead-in wire, the 3, first piezoelectric layer, 4, basic unit, the 5, first permanent magnet; 6, the second permanent magnet, the 7, second protective layer, the 8, second piezoelectric layer, 9, electrode, 10, roof beam structure; 11, fixing ball, 12, piezoelectric cantilever, 13, support bar, 14, housing.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
As shown in figs. 1-7, bistable state sphere composite cantilever piezoelectric generating device, this device comprises roof beam structure 10, housing 14; Described housing 14 is spheroidal, and circular open has been cut in bottom; Roof beam structure 10 and housing 14 are fixed on pedestal separately.
Roof beam structure 10 comprises fixing ball 11, piezoelectric cantilever 12, support bar 13; Fixing ball 11 is fixedly connected with piezoelectric cantilever 12; Support bar 13 supports fixing ball 11, and support bar 13 is fixedly connected with fixing ball 11; Roof beam structure 10 is core textures of the present invention, and the vibration of roof beam structure 10 can cause the distortion of piezoelectric cantilever 12, can produce electric energy when deformation occurs piezoelectric cantilever 12 because of piezoelectric effect; The quantity of piezoelectric cantilever 12 is 25, is divided into four layers, and ground floor is one, second, third, the 4th layer each uniform eight, the piezoelectric cantilever of described each interlayer 12 in evenly, annular spread; Support bar 13 is the supporting construction of roof beam structure 10, and support bar 13 is arranged on the fixing ball 11 symmetrical with the piezoelectric cantilever 12 of ground floor, and support bar 13 is fixedly connected on fixing ball 11 by the circular open bottom housing 14.
Piezoelectric cantilever 12, permanent magnet composition bistable state piezoelectric cantilever oscillator structure; Piezoelectric cantilever 12 comprises the first protective layer 1, lead-in wire the 2, first piezoelectric layer 3, basic unit 4, second protective layer 7, second piezoelectric layer 8, electrode 9; Wherein, interlayer annexation is followed successively by the first protective layer 1, first piezoelectric layer 3, basic unit 4, second protective layer 7, second piezoelectric layer 8, is gluing laminating between each layer; Described electrode 9 is provided with lead-in wire 2, and lead-in wire 2 is drawn from electrode 9, and piezoelectric cantilever 12 is out of shape the electric charge produced and can be gathered on electrode 9, and the electric charge gone between in 2 extraction electrodes 9 forms electric current.
Permanent magnet comprises the first permanent magnet 5, second permanent magnet 6, and described first permanent magnet 5 and the second permanent magnet 6 are rectangular magnet and mutually repel placement; Described piezoelectric cantilever 12 one end is fixed with the first permanent magnet 5, housing 14 inwall of homonymy is fixed with the second permanent magnet 6 with described first permanent magnet 5 same level position, described first permanent magnet 5 and the second permanent magnet 6 identical in quality, and staggered relatively according to magnetic pole.
Described piezoelectric cantilever 12 is symmetrical structures, and the length of the first protective layer 1, second protective layer 7 is equal, width is equal, and the length of the first piezoelectric layer 3, second piezoelectric layer 8 is equal, width is equal; The length of described first piezoelectric layer 3, basic unit 4 is identical, width is identical, and object is convenient to laminating, and obtain larger piezo area; Length and the width of described first protective layer 1 are all greater than the first piezoelectric layer 3, and object enables protective layer wrap up piezoelectric layer and basic unit 4, form enclosed construction; The parameter of two bistable state piezoelectric cantilever oscillator structures of symmetrical layout is consistent, and the parameter of the bistable state piezoelectric cantilever oscillator structure of adjacent layout is different; The width of nine piezoelectric cantilevers 12 of described first and third layer is equal, length is equal; The width of 16 piezoelectric cantilevers 12 of described second, four layers is equal, length is equal; The width of the piezoelectric cantilever 12 of first and second layer described is different, length is different, obtains larger frequency range when object is to vibrate.
Eight bistable state piezoelectric cantilever oscillators on described same plane are connected in series, and the bistable state piezoelectric cantilever oscillator in Different Plane is connected in parallel.
Described electrode 9 is that silk-screen silver slurry or copper mesh are laid.
The material of described first protective layer 1 and the second protective layer 7 is polyester; In described first piezoelectric layer 3 and the second piezoelectric layer 8, the one in PZT and PVDF selected by piezoelectric; The material of described basic unit 4 is the one in brass, red copper, steel, aluminum and its alloy; The size of described piezoelectric cantilever 12 and the size of the first permanent magnet 5 and the second permanent magnet 6 and between distance, can adjust with actual conditions.
When piezoelectric generating device vibrates, roof beam structure 10 and the structure be fixed on roof beam structure and housing 14 all produce vibration, piezoelectric cantilever 12 can produce relatively large amplitude, piezoelectric cantilever 12 motion produces distortion and piezoelectric layer wherein can be made also to produce distortion, polarization phenomena are produced during piezoelectric layer distortion, positive and negative charge is separated, and is attached on two faces of piezoelectric layer respectively, is drawn form electric current by lead-in wire 2.
In sum, the work frequency domain of bistable state sphere composite cantilever piezoelectric generating device of the present invention is wide, and the more single Piezoelectric Cantilever Beams of energy output and the array type linear piezoelectric cantilever beam structure of generating efficiency and unit interval significantly improve.
Bistable state sphere composite cantilever structure of the present invention can be used for micro electronmechanical product, as wireless sensor node, aircraft and satellite components and parts etc., also can be used for movement power generation, as sports shoe bottom is equipped with piezoelectric generating device or road paving piezoelectric generating device etc.
Claims (4)
1. bistable state sphere composite cantilever piezoelectric generating device, is characterized in that: this device comprises roof beam structure (10), housing (14); Described housing (14) is spheroidal, and circular open has been cut in bottom; Roof beam structure (10) and housing (14) are fixed on pedestal separately;
Roof beam structure (10) comprises fixing ball (11), piezoelectric cantilever (12), support bar (13); Fixing ball (11) is fixedly connected with piezoelectric cantilever (12); Support bar (13) supports fixing ball (11), and support bar (13) is fixedly connected with fixing ball (11); The quantity of piezoelectric cantilever (12) is 25, is divided into four layers, and ground floor is one, second, third, the 4th layer each uniform eight, between described each interlayer piezoelectric cantilever (12) in evenly, annular spread; The supporting construction that support bar (13) is roof beam structure (10), support bar (13) is arranged on the fixing ball (11) symmetrical with the piezoelectric cantilever of ground floor (12), and support bar (13) is fixedly connected on fixing ball (11) by the circular open of housing (14) bottom;
Piezoelectric cantilever (12), permanent magnet composition bistable state piezoelectric cantilever oscillator structure; Piezoelectric cantilever (12) comprises the first protective layer (1), lead-in wire (2), the first piezoelectric layer (3), basic unit (4), the second protective layer (7), the second piezoelectric layer (8), electrode (9); Wherein, interlayer annexation is followed successively by the first protective layer (1), the first piezoelectric layer (3), basic unit (4), the second protective layer (7), the second piezoelectric layer (8), is gluing laminating between each layer; Described electrode (9) is provided with lead-in wire (2), lead-in wire (2) is drawn from electrode (9), the electric charge that piezoelectric cantilever (12) distortion produces can be gathered on electrode (9), and the electric charge in lead-in wire (2) extraction electrode (9) forms electric current;
Permanent magnet comprises the first permanent magnet (5), the second permanent magnet (6), and described first permanent magnet (5) and the second permanent magnet (6) are for rectangular magnet and mutually repel placement; Described piezoelectric cantilever (12) one end is fixed with the first permanent magnet (5), housing (14) inwall of homonymy is fixed with the second permanent magnet (6) with described first permanent magnet (5) same level position, described first permanent magnet (5) and the second permanent magnet (6) identical in quality, and staggered relatively according to magnetic pole;
Described piezoelectric cantilever (12) is symmetrical structure, the length of the first protective layer (1), the second protective layer (7) is equal, width is equal, and the length of the first piezoelectric layer (3), the second piezoelectric layer (8) is equal, width is equal; The length of described first piezoelectric layer (3), basic unit (4) is identical, width is identical, and object is convenient to laminating, and obtain larger piezo area; Length and the width of described first protective layer (1) are all greater than the first piezoelectric layer (3); The parameter of two bistable state piezoelectric cantilever oscillator structures of symmetrical layout is consistent, and the parameter of the bistable state piezoelectric cantilever oscillator structure of adjacent layout is different; The width of nine piezoelectric cantilevers (12) of described first and third layer is equal, length is equal; The width of 16 piezoelectric cantilevers (12) of described second, four layers is equal, length is equal; The width of the piezoelectric cantilever (12) of first and second layer described is different, length is different;
Eight bistable state piezoelectric cantilever oscillators on described same plane are connected in series, and the bistable state piezoelectric cantilever oscillator in Different Plane is connected in parallel.
2. bistable state sphere composite cantilever piezoelectric generating device according to claim 1, is characterized in that: described electrode (9) is silk-screen silver slurry or copper mesh laying.
3. bistable state sphere composite cantilever piezoelectric generating device according to claim 1, is characterized in that: the material of described first protective layer (1) and the second protective layer (7) is polyester; The one in PZT and PVDF selected by described first piezoelectric layer (3) and the middle piezoelectric of the second piezoelectric layer (8); The material of described basic unit (4) is the one in brass, red copper, steel, aluminum and its alloy; The size of described piezoelectric cantilever (12) and the size of the first permanent magnet (5) and the second permanent magnet (6) and between distance, can adjust with actual conditions.
4. bistable state sphere composite cantilever piezoelectric generating device according to claim 1, it is characterized in that: when piezoelectric generating device vibrates, roof beam structure (10) and the structure be fixed on roof beam structure and housing (14) all produce vibration, piezoelectric cantilever (12) can produce relatively large amplitude, piezoelectric cantilever (12) motion produces distortion and piezoelectric layer wherein can be made also to produce distortion, polarization phenomena are produced during piezoelectric layer distortion, positive and negative charge is separated, be attached on two faces of piezoelectric layer respectively, drawn by lead-in wire (2) and form electric current.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410494118.4A CN104270032B (en) | 2014-09-24 | 2014-09-24 | Bistable state sphere composite cantilever piezoelectric generating device |
| US14/759,179 US9484523B2 (en) | 2014-09-24 | 2014-11-24 | Bistable piezoelectric cantilever vibration energy generator based on spherical composite structure and partial separation of different layers |
| PCT/CN2014/091997 WO2015106601A1 (en) | 2014-09-24 | 2014-11-24 | Spherical bistable cantilevered beam piezoelectric generator having separate parts between composite layers |
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| CN201410494118.4A CN104270032B (en) | 2014-09-24 | 2014-09-24 | Bistable state sphere composite cantilever piezoelectric generating device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795965A (en) * | 2015-04-27 | 2015-07-22 | 北京工业大学 | Small vibrating and oscillating type generator |
| CN104879269A (en) * | 2015-04-27 | 2015-09-02 | 合肥工业大学 | Floating piezoelectric ocean wave power generation assembly |
| CN105186924A (en) * | 2015-07-30 | 2015-12-23 | 李广明 | Ball hitting generator and wave force power generation device |
| CN105226994A (en) * | 2015-10-27 | 2016-01-06 | 张文明 | Multifrequency coupled vibrations energy capture device |
| CN106026767A (en) * | 2016-05-20 | 2016-10-12 | 江苏大学 | Piezoelectric type vibration energy harvester |
| CN107425753A (en) * | 2017-08-28 | 2017-12-01 | 北京工业大学 | Speed-increasing type wind power piezoelectric generation device |
| CN112366981A (en) * | 2020-11-02 | 2021-02-12 | 北京交通大学 | Multi-stable-state tuning mass piezoelectric energy harvester |
| CN112383244A (en) * | 2020-11-19 | 2021-02-19 | 上海第二工业大学 | Spherical piezoelectric power generation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008172106A (en) * | 2007-01-12 | 2008-07-24 | Fujikura Ltd | Piezoelectric fan device and manufacturing method thereof |
| WO2010151738A2 (en) * | 2009-06-26 | 2010-12-29 | Virginia Tech Intellectual Properties, Inc. | Piezomagnetoelastic structure for broadband vibration energy harvesting |
| CN102013837A (en) * | 2010-12-23 | 2011-04-13 | 南京航空航天大学 | Dandelion-like multi-directional broadband piezoelectric vibration energy collection device |
| CN102790547A (en) * | 2012-07-18 | 2012-11-21 | 天津大学 | Bistable and double cantilever beam piezoelectric power generating device |
| CN102790548A (en) * | 2012-07-18 | 2012-11-21 | 天津大学 | Bistable composite cantilever beam piezoelectric power generating device |
-
2014
- 2014-09-24 CN CN201410494118.4A patent/CN104270032B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008172106A (en) * | 2007-01-12 | 2008-07-24 | Fujikura Ltd | Piezoelectric fan device and manufacturing method thereof |
| WO2010151738A2 (en) * | 2009-06-26 | 2010-12-29 | Virginia Tech Intellectual Properties, Inc. | Piezomagnetoelastic structure for broadband vibration energy harvesting |
| CN102013837A (en) * | 2010-12-23 | 2011-04-13 | 南京航空航天大学 | Dandelion-like multi-directional broadband piezoelectric vibration energy collection device |
| CN102790547A (en) * | 2012-07-18 | 2012-11-21 | 天津大学 | Bistable and double cantilever beam piezoelectric power generating device |
| CN102790548A (en) * | 2012-07-18 | 2012-11-21 | 天津大学 | Bistable composite cantilever beam piezoelectric power generating device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795965A (en) * | 2015-04-27 | 2015-07-22 | 北京工业大学 | Small vibrating and oscillating type generator |
| CN104879269A (en) * | 2015-04-27 | 2015-09-02 | 合肥工业大学 | Floating piezoelectric ocean wave power generation assembly |
| CN104795965B (en) * | 2015-04-27 | 2017-09-22 | 北京工业大学 | A kind of small-sized oscillation type electric organ |
| CN105186924A (en) * | 2015-07-30 | 2015-12-23 | 李广明 | Ball hitting generator and wave force power generation device |
| CN105226994A (en) * | 2015-10-27 | 2016-01-06 | 张文明 | Multifrequency coupled vibrations energy capture device |
| CN106026767A (en) * | 2016-05-20 | 2016-10-12 | 江苏大学 | Piezoelectric type vibration energy harvester |
| CN107425753A (en) * | 2017-08-28 | 2017-12-01 | 北京工业大学 | Speed-increasing type wind power piezoelectric generation device |
| CN107425753B (en) * | 2017-08-28 | 2019-02-26 | 北京工业大学 | Speed-increasing type wind power piezoelectric generation device |
| CN112366981A (en) * | 2020-11-02 | 2021-02-12 | 北京交通大学 | Multi-stable-state tuning mass piezoelectric energy harvester |
| CN112383244A (en) * | 2020-11-19 | 2021-02-19 | 上海第二工业大学 | Spherical piezoelectric power generation device |
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