CN107968600A - A kind of wearable device for collecting piezoelectric vibration energy of synchronism output - Google Patents
A kind of wearable device for collecting piezoelectric vibration energy of synchronism output Download PDFInfo
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- CN107968600A CN107968600A CN201711334204.9A CN201711334204A CN107968600A CN 107968600 A CN107968600 A CN 107968600A CN 201711334204 A CN201711334204 A CN 201711334204A CN 107968600 A CN107968600 A CN 107968600A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 230000001360 synchronised effect Effects 0.000 claims description 21
- 230000033001 locomotion Effects 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 230000009347 mechanical transmission Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
- H02N2/188—Vibration harvesters adapted for resonant operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention provides a kind of wearable device for collecting piezoelectric vibration energy of synchronism output, including cavity, pedal, screw, screw, unilateral bearing, transmission shaft, spring, gear wheel, pinion gear, axis pin, thrust bearing, plectrum flywheel, piezoelectric cantilever;The pedal is fixed on one end of screw;The screw other end coordinates with screw;The screw is matched with unilateral bearing inner ring;Described transmission shaft one end coordinates with unilateral bearing outer ring, and the inner ring of the other end and thrust bearing coordinates;The spring one end is fixed on transmission shaft bottom, and the other end is free end;The gear wheel is fixed on transmission shaft one end;The pinion gear is engaged with gear wheel, and is fixed on axis pin one end;The axis pin coordinates with thrust bearing inner ring;The plectrum flywheel is fixed on the axis pin other end;Cavity is fixed in described piezoelectric cantilever one end, and the other end is free end.The present invention provides a kind of wearable device for collecting piezoelectric vibration energy of synchronism output, realizes the collection of energy with efficient, synchronization and continuation output electric energy.
Description
Technical field
The invention belongs to applied to micro-energy assembling sphere, more particularly to a kind of wearable energy collecting device.
Background technology
Since two thousand eight, the wearable device based on sensing technology is grown rapidly.At present, its main product shape
State include using wrist for support watch classes (including the product such as wrist-watch and wrist strap), using foot as support shoes classes (including footwear,
Wearable product on socks or leg), the Glass classes (including glasses, the helmet, headband etc.) using head as support, and intelligent clothing,
All kinds of non-mainstream product form such as school bag, crutch, accessories.
Wearable device is as a kind of mobile terminal, and the cruising ability of battery is key, but motion tracking device, intelligence
The wearable products such as wrist-watch, intelligent jewelry all do not have how much space to accommodate high capacity cell.It is most of wearable on the market at present
The cruising time of equipment is only 2 days or so, or even when 24 is small or so, continually charge and charge to wearable device to user's body
Test and bring big inconvenience.
Self energizing how is realized for wearable device, and researcher, which proposes, can realize from surrounding environment absorption energy
Energy harvester solution.At present, solar energy, thermoelectricity energy-provision way are had application in wearable device, but solar energy
Energy output size and collection efficiency limited by the shortcomings of rainy weather, volume;Also there is the energy supply that researcher uses thermoelectricity
Mode, it is hot, cold by foot's two-layer ceramic thin slice as Oranqe is proposed the charging boots of a entitled Power Welties
Temperature difference is converted into voltage output electric energy as the charging of the digital products such as mobile phone, but this energy-provision way is necessarily required to enough temperature
Effective electric energy can just be exported by spending poor (40 ° of T ≈, energy conversion efficiency μ≤1%).Compared to light, thermal energy, vibrational energy is people
The mechanical energy that body whenever and wherever possible, can be produced unrestrictedly, and from weather, the influence of temperature.Among vibrational energy collector,
Main Types have piezoelectric type, electrostatic and electromagnetic type piezoelectric type vibration energy harvester.It is domestic for the application of part performing equipment
Various solutions have been proposed outside, for example the researcher in MIT laboratories proposes the power-generating shoe based on arch,
Deformed upon and produced electricl energy by the down force of human contact's formula, which is generated electricity using disresonance operating mode, its
Efficiency of energy collection is low and is influenced by human motion frequency, is difficult to realize continuous electric energy output.Britain Ai Kesai in 2017
Especially big proposes a kind of array piezoelectric cantilever energy harvester applied to motion of knee joint, and outer shroud is driven by magnet
Rotation is converted to the movement of human body the impact to high frequency cantilevers beam, although the energy harvester is lifted using resonant operational pattern
Energy conversion efficiency, but the shortcomings that its same village can not be realized the electric energy output of continuation by human motion frequency limit.
The same year, China Renmin People's Liberation Army Office Support Engineering Academy (201710221721.9) have applied for that the collection of energy applied to human body fills
Put, equally exist by human motion frequency limit and can not realize the shortcomings that electric energy of continuation exports, and presence can not be at the same time
Encourage multiple cantilever beams and can not synchronism output electric energy the problem of so that can not realize with efficiently, synchronization and continuation export
The collection of energy of electric energy.
The content of the invention
The present invention is directed to above-mentioned technical problem, there is provided a kind of wearable piezoelectric vibration energy of synchronism output collects dress
Put, realize the collection of energy with efficient, synchronization and continuation output electric energy.
In order to solve above-mentioned technical problem, a kind of present invention synchronism output wearable piezoelectric vibration energy collects dress
Put, including cavity, pedal, screw, screw, unilateral bearing, transmission shaft, spring, gear wheel, pinion gear, axis pin, thrust bearing,
Plectrum flywheel, piezoelectric cantilever;
The pedal is fixed on one end of screw;The screw other end coordinates with screw;The screw is matched with unidirectionally
Bearing inner race;Described transmission shaft one end coordinates with unilateral bearing outer ring, and the inner ring of the other end and thrust bearing coordinates;The spring
Transmission shaft bottom is fixed in one end, and the other end is free end;The gear wheel is fixed on transmission shaft one end;The pinion gear with it is big
Gear engages, and is fixed on axis pin one end;The axis pin coordinates with thrust bearing inner ring;It is another that the plectrum flywheel is fixed on axis pin
One end;Cavity is fixed in described piezoelectric cantilever one end, and the other end is free end;
When external force acts on pedal downwards, screw moves downward, and screw rotates with, at this time unilateral bearing outer ring inner ring
Rotating Vortex, drives transmission shaft and gear drive rotation, adds the plectrum flywheel for being fixed on axis pin by gear drive
Speed rotates, so that the piezoelectric cantilever for being connected to cavity is subject to the periodicity of flywheel plectrum, routinely encourages at the same time, and reaches
Discharged after to certain displacement, produce periodically free damped high-frequency resonant vibration, so as to produce electricl energy, realize that synchronous electric energy is defeated
The collection of energy gone out;
When outer active force removes, screw moves and returns to initial position upwards under the action of spring restoring force, recovers
During unilateral bearing inner ring reversely rotate, outer ring direction of rotation is constant, therefore piezoelectric cantilever is in the reseting procedure of screw
The effect being activated is constant so that whole energy collecting device can still keep synchronous electric energy when outer active force changes
Output.
In a preferred embodiment:The shape of the cavity can be designed as circular or square.
In a preferred embodiment:The shape of the pedal can be designed as arbitrary shape, such as circular or square.
In a preferred embodiment:The screw, screw, unilateral bearing, transmission shaft, spring, gear wheel, pinion gear, pin
Axis, thrust bearing composition are at least the mechanical transmission structure of two level.
In a preferred embodiment:The screw, transmission shaft, the length of spring can design the row of screw single motion
Journey.
In a preferred embodiment:The gear wheel and the gearratio of pinion gear can encourage piezoelectric cantilever as needed
Frequency Design.
In a preferred embodiment:The number of the pinion gear is at least one.
In a preferred embodiment:Plectrum on the plectrum flywheel is in array distribution, and plectrum number can turn according to flywheel
Speed, the damped cycle design of piezoelectric cantilever.
In a preferred embodiment:The number that the plectrum flywheel is fixed on single axis pin is at least one.
In a preferred embodiment:The piezoelectric cantilever can be single piezoelectric cantilever or multi-layer piezoelectric cantilever beam, its
Number is at least one.
Relative to the prior art, the present invention has the following advantages and beneficial effect:
1st, one of advantage of the present invention is designed using multi-stage mechanical drive mechanism, makes pedal in process and return, can be with
Realize the Persistent Excitation in the same direction to piezoelectric cantilever, piezoelectric energy collector is departed from the limitation of human body acting frequency, realize
The electric energy output of continuation, is suitable for the human motion of frequency diverse.
2nd, the two of advantage of the present invention are to use plectrum flywheel accelerating structure, realize human body mechanical energy well and are hanged with piezoelectricity
Energy transmission between arm beam, can make multiple piezoelectric cantilevers are synchronous to be encouraged be subject to plectrum, avoid piezoelectric cantilever because
Electricity connection in series-parallel reduces the problem of energy output there are phase difference, while piezoelectric cantilever is carried out with the operating mode of resonance
High efficiency energy is collected, and is exported so as to fulfill efficient synchronous electric energy, is further improved efficiency of energy collection.On the other hand, lead to
The number of flywheel on increase axis pin is crossed, while increases the area or number of piezoelectric cantilever, and then can realize longitudinal space
Collection of energy, lifts the collection of energy density of whole device.
Brief description of the drawings
Fig. 1 is the three-dimensional structure signal that the new high efficiency synchronous of the present invention exports wearable device for collecting piezoelectric vibration energy
Figure.
Embodiment
Below by way of attached drawing, the present invention will be further described, but the present invention is not limited only to this embodiment.
With reference to shown in Fig. 1, the present invention provides a kind of wearable device for collecting piezoelectric vibration energy of synchronism output, including cavity
1st, pedal 2, screw 3, screw 4, unilateral bearing 5, transmission shaft 6, spring 7, gear wheel 8, pinion gear 9, axis pin 10, thrust bearing
11st, plectrum flywheel 12, piezoelectric cantilever 13;
The pedal 2 is fixed on one end of screw 3;3 other end of screw coordinates with screw 4;The screw 4 is matched with
5 inner ring of unilateral bearing;Described 6 one end of transmission shaft coordinates with 5 outer ring of unilateral bearing, and the inner ring of the other end and thrust bearing 11 is matched somebody with somebody
Close;6 bottom of transmission shaft is fixed in described 7 one end of spring, and the other end is free end;The gear wheel 8 is fixed on transmission shaft 6 one
End;The pinion gear 9 is engaged with gear wheel 8, and is fixed on 10 one end of axis pin;The axis pin 10 is matched somebody with somebody with 11 inner ring of thrust bearing
Close;The plectrum flywheel 12 is fixed on 10 other end of axis pin;Cavity is fixed in described 13 one end of piezoelectric cantilever, and the other end is certainly
By holding;When external force acts on pedal 2 downwards, screw 3 moves downward, and screw 4 rotates with, at this time in 5 outer ring of unilateral bearing
Rotating Vortex is enclosed, drives transmission shaft 6 and gear drive rotation, the plectrum for making to be fixed on axis pin 10 by gear drive to fly
Wheel 12 accelerates to rotate, so as to be connected to the piezoelectric cantilever 13 of cavity while be subject to the periodicity of flywheel plectrum 12, continuation
Ground encourages, and is discharged after reaching certain displacement, produces periodically free damped high-frequency resonant vibration, so that produce electricl energy, it is real
The collection of energy of existing high efficiency synchronous electric energy output;When outer active force removes, screw 3 is upward under the action of 7 restoring force of spring
Move and return to initial position, 5 inner ring of unilateral bearing reversely rotates in recovery process, and outer ring direction of rotation is constant, therefore piezoelectricity
The effect that cantilever beam 13 is activated in the reseting procedure of screw 3 is constant so that whole energy collecting device is in outer active force
The electric energy of high efficiency synchronous can be still kept to export during change.
The shape of the cavity 1 can be designed as circular or square, be circular in the present embodiment..
The shape of the pedal 2 can be designed as arbitrary shape, such as circular or square, be square in the present embodiment.
The screw 3, screw 4, unilateral bearing 5, transmission shaft 6, spring 7, gear wheel 8, pinion gear 9, axis pin 10, thrust shaft
The mechanical transmission structure that 11 compositions are at least two level is held, is secondary mechanical drive mechanism in the present embodiment.
The screw 3, transmission shaft 6, the length of spring 7 can design the stroke of screw single motion, silk in the present embodiment
The stroke of 3 single motion of bar is 120mm.
The gear wheel 8 and the gearratio of pinion gear 9 can encourage the Frequency Design of piezoelectric cantilever 11, this reality as needed
It is 16 to apply gearratio in example:1.
The number of pinion gear 9 is at least one in the mechanical driving device, is 2 in the present embodiment.
Plectrum on the plectrum flywheel 12 is in array distribution, and plectrum number can be according to Speed of Reaction Wheels, piezoelectric cantilever
The damped cycle of beam designs, and is 8 in the present embodiment.
The number that the plectrum flywheel 12 is fixed on single axis pin 10 is at least one, is 1 in the present embodiment.
The piezoelectric cantilever 13 can be single piezoelectric cantilever or double piezoelectric cantilevers, its number is at least one, this
It is 2 in embodiment.
In conclusion new high efficiency synchronous proposed by the present invention exports wearable device for collecting piezoelectric vibration energy, no
Limited by human motion frequency, collect the optional frequency movement that human body actively produces, realize the electric energy output of continuation,
It ensure that synchronous electric energy output at the same time, improve energy output size, efficiency of energy collection and energy density, it is achieved thereby that
The collection of energy of the lower high efficiency synchronous output of optional frequency excitation, enhances the practicality in wearable device field.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (10)
- A kind of 1. wearable device for collecting piezoelectric vibration energy of synchronism output, it is characterised in that:Including cavity, pedal, screw, silk Mother, unilateral bearing, transmission shaft, spring, gear wheel, pinion gear, axis pin, thrust bearing, plectrum flywheel, piezoelectric cantilever;The pedal is fixed on one end of screw;The screw other end coordinates with screw;The screw is matched with unilateral bearing Inner ring;Described transmission shaft one end coordinates with unilateral bearing outer ring, and the inner ring of the other end and thrust bearing coordinates;The spring one end Transmission shaft bottom is fixed on, the other end is free end;The gear wheel is fixed on transmission shaft one end;The pinion gear and gear wheel Engagement, and it is fixed on axis pin one end;The axis pin coordinates with thrust bearing inner ring;It is another that the plectrum flywheel is fixed on axis pin End;Cavity is fixed in described piezoelectric cantilever one end, and the other end is free end;When external force acts on pedal downwards, screw moves downward, and screw rotates with, and unilateral bearing outer ring inner ring is in the same direction at this time Rotation, drives transmission shaft and gear drive rotation, makes the plectrum flywheel for being fixed on axis pin accelerate to turn by gear drive It is dynamic, so that the piezoelectric cantilever for being connected to cavity is subject to the periodicity of flywheel plectrum, routinely encourages at the same time, and reach one Positioning discharges after moving, and produces periodically free damped high-frequency resonant vibration, so as to produce electricl energy, realizes synchronous electric energy output Collection of energy;When outer active force removes, screw moves and returns to initial position upwards under the action of spring restoring force, recovery process Middle unilateral bearing inner ring reversely rotates, and outer ring direction of rotation is constant, therefore piezoelectric cantilever is subject in the reseting procedure of screw The effect of excitation is constant so that the electric energy that whole energy collecting device can still keep synchronous when outer active force changes is defeated Go out.
- 2. new high efficiency synchronous according to claim 1 exports wearable device for collecting piezoelectric vibration energy, its feature It is:The shape of the cavity can be designed as circular or square.
- 3. new high efficiency synchronous according to claim 1 exports wearable device for collecting piezoelectric vibration energy, its feature It is:The shape of the pedal can be designed as arbitrary shape, such as circular or square.
- 4. new high efficiency synchronous according to claim 1 exports wearable device for collecting piezoelectric vibration energy, its feature It is:The screw, screw, unilateral bearing, transmission shaft, spring, gear wheel, pinion gear, axis pin, thrust bearing composition are at least The mechanical transmission structure of two level.
- 5. new high efficiency synchronous according to claim 1 exports wearable device for collecting piezoelectric vibration energy, its feature It is:The screw, transmission shaft, the length of spring can design the stroke of screw single motion.
- 6. new high efficiency synchronous according to claim 1 exports wearable device for collecting piezoelectric vibration energy, its feature It is:The gear wheel and the gearratio of pinion gear can encourage the Frequency Design of piezoelectric cantilever as needed.
- 7. new high efficiency synchronous according to claim 1 exports wearable device for collecting piezoelectric vibration energy, its feature It is:The number of the pinion gear is at least one.
- 8. new high efficiency synchronous according to claim 1 exports wearable device for collecting piezoelectric vibration energy, its feature It is:Plectrum on the plectrum flywheel is in array distribution, and plectrum number can be according to the decay week of Speed of Reaction Wheels, piezoelectric cantilever Phase is designed.
- 9. new high efficiency synchronous according to claim 1 exports wearable device for collecting piezoelectric vibration energy, its feature It is:The number that the plectrum flywheel is fixed on single axis pin is at least one.
- 10. new high efficiency synchronous according to claim 1 exports wearable device for collecting piezoelectric vibration energy, its feature It is:The piezoelectric cantilever can be that single piezoelectric cantilever or multi-layer piezoelectric cantilever beam, its number are at least one.
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Cited By (7)
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CN109458313A (en) * | 2018-10-10 | 2019-03-12 | 厦门大学 | A kind of energy storage type active energy collection device |
CN109861584A (en) * | 2019-04-09 | 2019-06-07 | 苏州市职业大学 | A kind of power generator for collecting arms swing energy |
CN110486431A (en) * | 2019-07-22 | 2019-11-22 | 南方科技大学 | Move transformational structure and energy conversion device |
CN111628674A (en) * | 2020-06-01 | 2020-09-04 | 北京理工大学 | Frequency-rising piezoelectric-electromagnetic energy harvesting device |
CN112516529A (en) * | 2020-12-15 | 2021-03-19 | 阿坝师范学院 | Energy-saving type exercise and fitness equipment |
CN114362441A (en) * | 2022-01-13 | 2022-04-15 | 山东交通学院 | Road pressure power generation device based on mechanical transmission |
CN114465523A (en) * | 2022-01-10 | 2022-05-10 | 西安理工大学 | Human sole energy capture device |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109458313A (en) * | 2018-10-10 | 2019-03-12 | 厦门大学 | A kind of energy storage type active energy collection device |
CN109861584A (en) * | 2019-04-09 | 2019-06-07 | 苏州市职业大学 | A kind of power generator for collecting arms swing energy |
CN109861584B (en) * | 2019-04-09 | 2024-02-09 | 苏州市职业大学 | Power generation device for collecting arm swing energy |
CN110486431A (en) * | 2019-07-22 | 2019-11-22 | 南方科技大学 | Move transformational structure and energy conversion device |
CN111628674A (en) * | 2020-06-01 | 2020-09-04 | 北京理工大学 | Frequency-rising piezoelectric-electromagnetic energy harvesting device |
CN112516529A (en) * | 2020-12-15 | 2021-03-19 | 阿坝师范学院 | Energy-saving type exercise and fitness equipment |
CN114465523A (en) * | 2022-01-10 | 2022-05-10 | 西安理工大学 | Human sole energy capture device |
CN114465523B (en) * | 2022-01-10 | 2024-05-07 | 西安理工大学 | Human plantar energy capturing device |
CN114362441A (en) * | 2022-01-13 | 2022-04-15 | 山东交通学院 | Road pressure power generation device based on mechanical transmission |
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