CN107342707A - A kind of self-powered anemoscope - Google Patents
A kind of self-powered anemoscope Download PDFInfo
- Publication number
- CN107342707A CN107342707A CN201710729379.3A CN201710729379A CN107342707A CN 107342707 A CN107342707 A CN 107342707A CN 201710729379 A CN201710729379 A CN 201710729379A CN 107342707 A CN107342707 A CN 107342707A
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- leaf spring
- balance
- semiaxis
- piezoelectric vibrator
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- 239000000758 substrate Substances 0.000 claims abstract description 24
- 230000005284 excitation Effects 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 230000003993 interaction Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/08—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The present invention relates to a kind of self-powered anemoscope, belongs to wind-force field of measuring technique.Semiaxis is provided with above balance disk body and sensor is housed, disk body has boss and land, equipped with circuit board；Sensor is distributed on using half axis center as on the circumference in the center of circle；Sail frame sleeve equipped with canvas is enclosed on semiaxis；One group of sail frame chassis ball is pressed on balance disk body；Embedded with two magnet for being symmetrical with semiaxis both sides below sail frame chassis；Shell body is on base, and for driver connecting plate on base boss, driver connecting plate is provided with swing rod, and swing rod is provided with excitation disk, and excitation disk is provided with stud, and stud is connected with balance boss；Contacted but without interaction force with excitation disk outer rim equipped with the generator unit being made up of the piezoelectric vibrator of leaf spring and its both sides balanced configuration, leaf spring free end in uniform way in the side wall of base boss；Piezoelectric vibrator is formed by substrate and piezoelectric piece bonding, and substrate free end is provided with flange, and substrate is installed close to leaf spring and flange is acted against in leaf spring.
Description
Technical field
The invention belongs to wind-force field of measuring technique, and in particular to a kind of self-powered anemoscope.
Background technology
Wind direction and wind velocity e measurement technology is all widely used demand in the industry such as meteorology, civil aviaton, highway and bridge and mining.
It is presently used for novel sensor, data acquisition and procession technology of wind direction and wind velocity measurement etc. and all achieves significant progress, wherein
Portable digital formula air speed measuring apparatus has obtained extensive practical application in the industrial production.However, field natural environment apoplexy
There are some key issues for being badly in need of solving in terms of measuring wind speed, such as data sampling and processing and the energy of lasting remote transmission
Supply problem, the low wind speed starting problem of measuring system, etc..
The content of the invention
The present invention proposes a kind of self-powered anemoscope, and the embodiment that the present invention uses is：It is provided with above the disk body of balance
Semiaxis is simultaneously provided with sensor through screw, and boss with threaded hole is provided with the center below disk body, is provided with land at outer rim, pendulum
Circuit board is installed through screw below the disk body of disk, circuit board is provided with power conversion circuits, arithmetic processing circuit and information and sent out
Penetrate system；Sensor is distributed on using half axis center as on the circumference in the center of circle, sensor is Nian Jie with piezoelectric film by the ni substrate of uniform thickness
Form, the diameter of piezoelectric film is 0.8 with the diameter ratio of ni substrate deformable segment, and piezoelectric film is installed down；Sail frame is by mutual
Vertical sleeve and chassis are formed, and sleeve is enclosed on semiaxis and can rotated around semiaxis, and canvas is provided with sleeve；The chassis of sail frame
It is pressed in through one group of ball on the disk body of balance, ball is placed in the counterbore on chassis and rotatable；It is inlaid with below the chassis of sail frame
Two magnet, magnetic blow out centre are located on same circumference with center sensor, and magnet is symmetrically mounted on semiaxis both sides.
Shell body is arranged on base through screw, and the connecting plate of driver is arranged on base boss through screw, driver
Connecting plate be provided with swing rod, swing rod upper end is provided with excitation disk, is provided with stud above excitation disk, and the boss of stud and balance is through spiral shell
Line is connected, and shell body upper end is placed in the land of balance；It is provided with uniform way through pressing plate and screw in the side wall of base boss
Generator unit, generator unit are made up of the piezoelectric vibrator of leaf spring and its both sides balanced configuration, one end warp of leaf spring and piezoelectric vibrator
Pressing plate is crimped in the side wall of base boss, and the free end of leaf spring contacts but without interaction force with excitation disk outer rim；Piezoelectricity shakes
Son is formed by substrate and piezoelectric piece bonding, and substrate free end is provided with flange, and substrate turns over close to leaf spring installation and substrate free end
While act against in leaf spring.
In the present invention, be flat construction before piezoelectric vibrator installation, install after be warp architecture, institute on piezoelectric patches during inoperative
The maximum crushing stress born is the half of its allowable value, and the deflection of double-layer structure end is the one of its allowable value on piezoelectric vibrator
Half, i.e.,Wherein：B=1- α+α β, A=α4(1-
β)2-4α3(1-β)+6α2(1- β) -4 α (1- β)+1,α=hm/ H, β=Em/Ep, hmWith
H is respectively the thickness and piezoelectric vibrator gross thickness of substrate, EmAnd EpThe respectively Young's modulus of substrate and piezoelectric patches, k31WithPoint
Not Wei piezoceramic material electromechanical coupling factor and permissible compression stress, L be piezoelectric vibrator double-layer structure part jib-length.
When being blowed air in environment, the coupling of canvas and wind will force sail frame, balance and driver to swing, then through swashing
Encouraging the interaction of disk and leaf spring makes the state of piezoelectric vibrator change：During leaf spring flexural deformation, leaf spring side piezoelectric vibrator
Deflection increase, opposite side piezoelectric vibrator deflection reduce, when the swing rod of driver deform land excessive and that make balance with it is outer
When housing is in contact, gradually increased piezoelectric vibrator deflection is less than its allowable value to deflection；Piezoelectric vibrator deflection alternately increases
Increase and reduce the stress alternation of piezoelectric patches during addition and subtraction are small, so as to convert mechanical energy into electric energy, this is piezoelectricity
Power generation process；The electric energy generated is through on wire transmission to circuit board, the processing after converted processing for wind direction signals calculates
With transmitting.
When wind direction in environment changes, canvas will drive the semiaxis of sail frame and magnet around balance to rotate, so as to change
The relative position of each sensor and magnet, become the magnitude of voltage on each sensor on the deflection and piezoelectric film of ni substrate
Change, with magnet apart from the voltage of high, the remote sensor of voltage of near sensor is weak or no-voltage, therefore the present invention is according to each sensing
The power of device voltage signal and whether there is determination wind direction, the wind vector information obtained is sent out through the information transmitting system on circuit board
It is shot out.
Advantage and characteristic：It is simple in construction, threshold wind velocity is low, required energy-autarchic, without chemical cell and laying cable；Pressure
Electric tachometer indicator itself is high without additional mass, fundamental frequency, it can be ensured that is operated under first-order modal, generating effect is good；System fundamental frequency easily passes through
Leaf spring rigidity is adjusted；Piezoelectric vibrator is subjected only to unidirectional excitation in work, generation bend in one direction deforms, piezoelectric patches is subjected only to press
Stress and excitation is apart from controllable, therefore reliability is high.
Brief description of the drawings
Fig. 1 is the structural representation of anemoscope in a preferred embodiment of the present invention；
Fig. 2 is the structural representation of a preferred embodiment of the present invention topsail frame；
Fig. 3 is Fig. 2 top view；
Fig. 4 is Fig. 1 A-A sectional views；
Fig. 5 is Fig. 1 I portions view；
Fig. 6 is the structural representation of driver in a preferred embodiment of the present invention.
Embodiment
Semiaxis a2 is provided with above balance a disk body a1, sensor b is installed through screw, is set at the center below disk body a1
There is boss a3 with threaded hole, land a4 is provided with outer rim, circuit board y is installed through screw below disk body a1, set on circuit board y
There are power conversion circuits, arithmetic processing circuit and information transmitting system；Sensor b is distributed on the circle using semiaxis a2 centers as the center of circle
Zhou Shang, sensor b by uniform thickness ni substrate b1 it is Nian Jie with piezoelectric film b2 form, piezoelectric film b2 diameter and ni substrate b1 is deformable
Partial diameter ratio is 0.8, and piezoelectric film b2 is installed down；Sail frame c is made up of orthogonal sleeve c1 and chassis c2, sleeve
C1 is enclosed on semiaxis a2 and can rotated around semiaxis a2, and canvas d is provided with sleeve c1；Sail frame c chassis c2 presses through one group of ball e
On balance a disk body a1, ball e is placed in chassis c2 counterbore and rotatable；Two are inlaid with below sail frame c chassis c2
Magnet f, magnet f center are centrally located on same circumference with sensor b, and magnet f is symmetrically mounted on semiaxis a2 both sides.
Shell body h is arranged on base g through screw, and driver i connecting plate i1 is arranged on base boss g1 through screw,
Driver i connecting plate i1 is provided with swing rod i2, and swing rod i2 upper ends are provided with excitation disk i3, stud i4 is provided with above excitation disk i3,
Stud i4 is connected with balance a boss a3 through screw thread, and shell body h upper end is placed in balance a land a4；Base boss g1
Side wall on through pressing plate j and screw generator unit E is installed in uniform way, generator unit E is by leaf spring m and its both sides balanced configuration
Piezoelectric vibrator k is formed, and leaf spring m and piezoelectric vibrator k one end are crimped on through pressing plate j in base boss g1 side wall, leaf spring m from
By holding with encouraging disk i3 outer rim to contact but without interaction force；Piezoelectric vibrator k is formed by substrate k1 and piezoelectric patches k2 bondings, base
Plate k1 free ends are provided with flange k3, and substrate k1 is installed close to leaf spring m and the flange k3 of substrate k1 free ends is acted against on leaf spring m.
In the present invention, be flat construction before piezoelectric vibrator k installations, install after be warp architecture, piezoelectric patches k2 during inoperative
On the maximum compression born be its allowable value half, the deflection of double-layer structure end is permitted for it on piezoelectric vibrator k
With the half of value, i.e.,Wherein：B=1- α+α
β, A=α4(1-β)2-4α3(1-β)+6α2(1- β) -4 α (1- β)+1,α=hm/ H, β=
Em/Ep, hmIt is respectively substrate k1 thickness and piezoelectric vibrator k gross thickness with H, EmAnd EpRespectively substrate k1 and piezoelectric patches k2 poplar
Family name's modulus, k31WithThe respectively electromechanical coupling factor and permissible compression stress of piezoceramic material, L are two layers of knot of piezoelectric vibrator k
The jib-length of structure part.
When the wind direction of environment and wind speed change in work, the effect of canvas d wind-engagings power will force sail frame c rotations and driver i
Swing, so as to realize the automatic measurement of wind-power electricity generation and wind direction, process is as follows：
When being blowed air in environment, the coupling of canvas d and wind will force sail frame c, balance a and driver i to swing, then
Through encouraging disk i3 and leaf spring m interaction piezoelectric vibrator k state is changed：During leaf spring m flexural deformations, leaf spring m mono-
Side pressure electric tachometer indicator k deflection increase, opposite side piezoelectric vibrator k deflection reduce, when driver i swing rod i2 deformations are excessive
And when balance a land a4 is in contact with shell body h, the gradual increased piezoelectric vibrator k of deflection practical distortion amount is less than
Its allowable value；Increase and reduce piezoelectric patches k2 stress alternation during piezoelectric vibrator k deflections alternately increase with reduction,
So as to convert mechanical energy into electric energy, this is piezo-electric generating process；The electric energy generated is through on wire transmission to circuit board y, passing through
Processing after conversion process for wind direction signals calculates and transmitting.
When wind direction in environment changes, canvas d will drive semiaxis a2s of the sail frame c and magnet f around balance a to rotate, from
And change each sensor b and magnet f relative position, make on each sensor b on ni substrate b1 deflection and piezoelectric film b2
Magnitude of voltage changes, with magnet f apart near sensor b high, the remote sensor b of voltage voltage is weak or no-voltage, therefore
The present invention is according to the strong and weak of each sensor b voltage signals and whether there is determination wind direction, and the wind vector information obtained is through circuit board y
On information transmitting system launch.
Claims (1)
- A kind of 1. self-powered anemoscope, it is characterised in that：Semiaxis is provided with above the disk body of balance and sensor is housed, below disk body Provided with land is provided with boss, outer rim at center, circuit board is housed below the disk body of balance；Sensor is distributed on half axis center For on the circumference in the center of circle, sensor is formed by ni substrate is Nian Jie with piezoelectric film；Sail frame is made up of orthogonal sleeve and chassis, Sleeve is enclosed on semiaxis and can rotated around semiaxis, and canvas is provided with sleeve；One group of the chassis ball of sail frame is pressed in balance On disk body, ball is placed in the counterbore on chassis and rotatable；Two magnet, magnetic blow out centre and sensing are embedded with below the chassis of sail frame Device is centrally located on same circumference, and magnet is symmetrically mounted in semiaxis both sides；On base, the connecting plate of driver is mounted in shell body On base boss, the connecting plate of driver is provided with swing rod, and swing rod upper end is provided with excitation disk, stud, spiral shell are provided with above excitation disk Post is connected with the boss of balance, and shell body upper end is placed in the land of balance；In the side wall of base boss in uniform way be equipped with by The generator unit that leaf spring and its piezoelectric vibrator of both sides balanced configuration are formed, leaf spring free end contact but without phase with excitation disk outer rim Interreaction force；Piezoelectric vibrator is formed by substrate and piezoelectric piece bonding, and substrate free end is provided with flange, substrate installed close to leaf spring and Flange is acted against in leaf spring；Be flat construction before piezoelectric vibrator installation, install after be warp architecture, during inoperative on piezoelectric vibrator The deflection of double-layer structure end is the half of its allowable value；The swing rod of driver deforms land and shell excessive and that make balance When body phase contacts, piezoelectric vibrator deflection is less than its allowable value；According to the power of each sensor voltage signal and whether there is determination wind To wind direction information is launched through the information transmitting system on circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729379.3A CN107342707B (en) | 2017-08-17 | 2017-08-17 | A kind of self-powered anemoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729379.3A CN107342707B (en) | 2017-08-17 | 2017-08-17 | A kind of self-powered anemoscope |
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| Publication Number | Publication Date |
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| CN107342707A true CN107342707A (en) | 2017-11-10 |
| CN107342707B CN107342707B (en) | 2019-01-29 |
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| CN201710729379.3A Active CN107342707B (en) | 2017-08-17 | 2017-08-17 | A kind of self-powered anemoscope |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112187105A (en) * | 2020-11-15 | 2021-01-05 | 浙江师范大学 | External rotatory self excitation energy accumulator of shaft end |
| CN112910312A (en) * | 2021-03-18 | 2021-06-04 | 重庆大学 | Wind-induced vibration piezoelectric wind power generation device and piezoelectric wind power generation device group |
| CN113364338A (en) * | 2021-07-05 | 2021-09-07 | 浙江师范大学 | High-power low-flow-rate generator |
| CN114050735A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Self-generating charger |
| CN114050740A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Monitoring system based on wind energy and vibration energy collection |
| CN114050741A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Walking-excited piezoelectric energy harvester |
| CN114050734A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Piezoelectric-friction-electromagnetic composite vibration generator |
| CN114123844A (en) * | 2021-11-26 | 2022-03-01 | 浙江师范大学 | Self-powered monitoring system for friction energy harvesting |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112187105A (en) * | 2020-11-15 | 2021-01-05 | 浙江师范大学 | External rotatory self excitation energy accumulator of shaft end |
| CN112187105B (en) * | 2020-11-15 | 2021-09-24 | 浙江师范大学 | External rotatory self excitation energy accumulator of shaft end |
| CN112910312A (en) * | 2021-03-18 | 2021-06-04 | 重庆大学 | Wind-induced vibration piezoelectric wind power generation device and piezoelectric wind power generation device group |
| CN112910312B (en) * | 2021-03-18 | 2023-03-10 | 重庆大学 | Wind-induced vibration piezoelectric wind power generation device and piezoelectric wind power generation device group |
| CN113364338A (en) * | 2021-07-05 | 2021-09-07 | 浙江师范大学 | High-power low-flow-rate generator |
| CN114050735A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Self-generating charger |
| CN114050740A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Monitoring system based on wind energy and vibration energy collection |
| CN114050741A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Walking-excited piezoelectric energy harvester |
| CN114050734A (en) * | 2021-11-26 | 2022-02-15 | 浙江师范大学 | Piezoelectric-friction-electromagnetic composite vibration generator |
| CN114123844A (en) * | 2021-11-26 | 2022-03-01 | 浙江师范大学 | Self-powered monitoring system for friction energy harvesting |
| CN114123844B (en) * | 2021-11-26 | 2023-05-19 | 浙江师范大学 | Self-powered monitoring system for friction energy harvesting |
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| Publication number | Publication date |
|---|---|
| CN107342707B (en) | 2019-01-29 |
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Effective date of registration: 20231207 Address after: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd. Address before: 321004 Zhejiang Normal University, 688 Yingbin Avenue, Wucheng District, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG NORMAL University |
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