CN106655887A - Rubber bearing structure based on piezoelectric effect and power generating system thereof - Google Patents
Rubber bearing structure based on piezoelectric effect and power generating system thereof Download PDFInfo
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- CN106655887A CN106655887A CN201611216740.4A CN201611216740A CN106655887A CN 106655887 A CN106655887 A CN 106655887A CN 201611216740 A CN201611216740 A CN 201611216740A CN 106655887 A CN106655887 A CN 106655887A
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- 239000000919 ceramic Substances 0.000 claims description 33
- 230000005611 electricity Effects 0.000 claims description 23
- 244000043261 Hevea brasiliensis Species 0.000 claims description 2
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 1
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- 238000005859 coupling reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 2
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention relates to a rubber bearing structure based on the piezoelectric effect and a power generating system thereof; the rubber bearing structure comprises a bottom rubber layer; a reinforcing plate is arranged on the bottom rubber layer, and provided with a plurality of piezoelectric plates connected in parallel; a top rubber layer is arranged on the piezoelectric plates; the rubber bearing structure is arranged between a box girder and a pier of a bridge, and connected with a storage battery, thus powering up power devices on the bridge through a bridge power supply circuit. The rubber bearing structure can obtain large amplitudes along with bridge vibrations, thus giving large stress change amplitudes on the inner piezoelectric plates, ensuring piezoelectric plate deformation frequency level, improving power generating capacity and efficiency, and improving energy conversion efficiency; the power generating system is combined with the rubber bearing structure, so the installation and maintenance are easy; compared with large area installation and paving in the prior art, the rubber bearing structure and the power generating system are easy to construct, low in cost, and high in practical value.
Description
Technical field
The present invention relates to piezoelectric ceramics generates electricity and power harvesting technology field, more particularly to a kind of rubber based on piezo-electric effect
Glue seat structure and its electricity generation system.
Background technology
Research shows, when pressure or pulling force is applied to potsherd, the contrary electric charge of polarization is understood at the two ends of potsherd,
Electric current is formed by loop, this effect is referred to as piezo-electric effect.Ceramics with this performance are referred to as piezoelectric ceramics, its surface
The density of electric charge is directly proportional to suffered mechanical stress.People have now been developed various machines using this characteristic of piezoelectric ceramics
Tool performance is converted into the device of electric energy：
(1) walking piezo-electric generating
People can waste some mechanical performances in motion process, therefore have much for the research on utilization of these energy, example
Such as piezo-electric generating footwear, piezo-electric generating footwear are exactly that TRT is implanted into sole, by human body impact of the pin to sole when walking
Deform piezoelectric ceramics and produce electric charge.
(2) microgenerator
Shashank professors Priya of Texas, USA university have manufactured a kind of miniature using piezo component
Motor.This small generator produces vibration by the wind drive piezoelectric bimorph girder construction of speed per hour 8-16 kilometer, so as in piezoelectricity
Electric energy is produced on ceramics.The power that this microgenerator can provide most 50mW for wireless sensor network node.
(3) mechanical force generates electricity
Now a kind of modern electronic lighter on gas range, is exactly using made by piezoelectric ceramics.It is that one kind will
Mechanical force is converted to the device that electric energy produces electric spark and pilot gas, is the typical case that piezoelectric ceramics makees electromechanical transducing materials'use
One of example.
Above-mentioned these convert mechanical energy into the device of electric energy, and shortcoming is：1. piezoelectric ceramics cannot obtain larger answering
Power amplitude of variation, partial devices are only limitted to artificial applying；2. it is a random chance thing that external drive causes piezoelectric ceramics tension and compression
Part, it is impossible to ensure the frequent degree that piezoelectric ceramics deforms；3. most of device generated energy is little, and energy conversion efficiency is not high, it is difficult to carry
People's large-scale use is supplied for sufficient electric energy.
Now, with the progress and the increasingly raising of people's living standard of Chinese society, many people have purchased private savings
Car；Convenient for traffic, government has built many bridges, especially arch bridge, cable-stayed bridge, suspension bridge.With bridge construction technology
Improve, bridge towards Long span, lightness develop, and the vehicle flowrate on bridge constantly increases.The motor vehicle travelled on bridge makes
Bridge frequent vibration, the pressure change on bridge pad is rapid, and " hiding " the energy for going out of use in a large number.Nowadays also it has been proposed that
Piezoelectric generating device is installed on bridge pad, the pressure conversion produced on bridge pad when motor vehicle is passed through into bridge is electricity
Can, so as to realize generating electricity.Existing bridge pad piezoelectric generating device, in order to obtain enough pressure or pulling force, be required to by
Piezoelectric ceramics device large area is laid on bridge, not only needs to expend substantial amounts of manpower and materials, and difficulty of construction is big, high cost,
And trouble is changed in maintenance, it is impossible to meet the demand of technology development.
The content of the invention
The present invention is in order to solve the problems, such as that prior art needs large area that piezoelectric ceramics device is laid on bridge, there is provided one
Plant based on the rubber support structure of piezo-electric effect, the rubber support structure is obtained in that larger amplitude with the vibrations of bridge,
So as to the STRESS VARIATION amplitude that the piezoelectric patches for giving inside is larger, while ensureing the frequent degree of piezoelectric patches deformation, improve and generate electricity
Amount and generating efficiency, improve energy conversion efficiency, are layed on bridge without the need for large area.
The present invention also provides a kind of electricity generation system of the rubber support structure based on piezo-electric effect.
The present invention based on piezo-electric effect rubber support structure, if including bottom rubber layer, stiffener, top rubber layer and
Dry piezoelectric patches；Stiffener is arranged in the rubber layer of bottom, and some piezoelectric patches are disposed in an evenly spaced relation on stiffener, some piezoelectric patches
It is connected in parallel, top rubber layer is arranged on some piezoelectric patches；The area coverage of the piezoelectric patches at least accounts for plate suqare of putting more energy into
4/5。
In a preferred embodiment, the piezoelectric patches is pasted and is fixed on stiffener.Piezoelectric patches is viscous with stiffener
Knotting strength is more preferably greater than 10Mpa.
Preferably, if the stiffener is rectangle, the piezoelectric patches area coverage is with a length of diameter of stiffener minor face
Circle；If the stiffener is circle, the piezoelectric patches covers whole stiffener.
In order to take into account the effect of damping and piezo-electric effect, while making that the output energy of piezoelectric patches is as big as possible, the present invention can
Bottom rubber layer, top rubber layer, stiffener are set into 10 layers, some piezoelectric patches are equipped with every layer of stiffener, it is different
Piezoelectric patches on layer stiffener is connected in parallel.
The present invention based on piezo-electric effect rubber support structure electricity generation system, including at least one it is above-mentioned based on piezoelectricity imitate
The rubber support structure answered, and battery and control device；The described at least one rubber support structure based on piezo-electric effect
Between the box beam and bridge pier of bridge；Respectively based on the piezoelectric patches in the rubber support structure of piezo-electric effect with parallel way company
After connecing, Jing wires are connected with battery；The control device is arranged on the power supply circuits of bridge, and battery is controlled by control dress
Put, Jing power supply circuits are powered to electrical equipment on bridge.
Compared with prior art, the present invention has the advantages that：
1st, rubber support structure is provided with two rubber layers, i.e. bottom rubber layer and top rubber layer, in the rubber layer of bottom
Stiffener is set, and some piezoelectric patches are arranged on stiffener after being connected in parallel.Rubber support structure be arranged on bridge box beam with
Between bridge pier, the piezoelectric patches after parallel connection is connected by charging circuit with battery.The rubber support structure is with the vibrations of bridge
Or it is pressurized be obtained in that large magnitude, so as to give the larger STRESS VARIATION amplitude of piezoelectric patches of inside, while ensureing piezoelectric patches
The frequent degree of deformation, improves generated energy and generating efficiency, improves energy conversion efficiency.
2nd, because rubber support structure large area installation need not be layed in bridge as piezo-electric device in prior art
On, and electricity generation system is based on above-mentioned rubber support structure, installs and easy to maintenance, low cost, with very high practicality.
Description of the drawings
Fig. 1 is structural representation of the present invention based on the rubber support structure of piezo-electric effect；
Fig. 2 is the electrical block diagram of electricity generation system of the present invention；
Wherein, 1, rubber support structure, 11, bottom rubber layer, 12, stiffener, 13, piezoelectric patches, 14, top rubber layer,
2nd, box beam, 3, bridge pier, 4, wire, 5, battery, 6, control device, 7, distributor cap, 8, voltameter.
Specific embodiment
For the present invention is described in further detail, describe the present invention below in conjunction with drawings and Examples, but this
The specific embodiment not limited to this of invention.
Embodiment
As shown in figure 1, rubber support structure of the present invention based on piezo-electric effect, including bottom rubber layer 11, the bottom
The top of rubber layer 11 is provided with stiffener 12, and the top of the stiffener 12 is provided with some piezoelectric patches 13 being connected in parallel,
The top of the piezoelectric patches 13 is provided with top rubber layer 14.Bottom rubber layer 11, top rubber layer 14 are natural rubber.
Piezoelectric patches 13 is pasted and is fixed on stiffener 12, wherein the optional used polyurethane glue of agent is pasted, so that piezoelectricity
Piece 13 is more than 10Mpa with the adhesion strength of stiffener 12, it is ensured that caking property does not occur between piezoelectric ceramic piece and stiffener 12 and breaks
It is bad.The area coverage of piezoelectric patches 13 at least accounts for the 4/5 of the area of stiffener 12, and is disposed in an evenly spaced relation on stiffener 12 so that
Piezoelectric patches 13 is as consistent as possible with the lifting surface area of stiffener 12.The stress that stiffener 12 enables to piezoelectric patches 13 is more equal
It is even, it is easy to collect greater area of pressure, so as to be beneficial to improve generated energy and generating efficiency.If stiffener is rectangle, the pressure
Electric piece area coverage is with the circle of a length of diameter of stiffener minor face；If stiffener is circle, the piezoelectric patches can be covered entirely
Stiffener；In general, circular piezoelectric potsherd is higher than the output voltage of rectangular piezoelectric ceramic piece.
Piezoelectric patches 13 is piezoelectric ceramic piece, and the thickness of piezoelectric ceramic piece is 1-2mm, preferably 1.5mm.Piezoelectric ceramics should have
There are higher piezoelectric constant, dielectric coefficient, ultimate strength；Preferably select lead zirconate titanate (PZT) piezoelectric ceramics, and wherein PZT-5X
Curie point on the curie point of general PZT, more than between 300-400, and without relatively low transformation temperature, in larger temperature model
Enclose interior performance all more stable, used as transductive material, its piezo-electric effect is very notable.The piezoelectric ceramic piece of the present embodiment is by pressing
Electroceramics PZT-5X is constituted, and the advantage of piezoelectric ceramics PZT-5X is that PZT-5 (reception type) has high electromechanical coupling factor, high pressure
Electric strain constant and high resistivity, each electromechanical parameters have excellent time stability and temperature stability, it is adaptable to low-power
Resonance and off-resonance.
The preferred FRP stiffeners of stiffener 12 (abbreviation FRP plate).Relative to other rubber supports (such as laminated rubber bearing)
In stiffener, FRP plate improves the damping energy dissipation ability of rubber support, and itself can function well as the work of damping energy dissipation
With.FRP plate includes one layer of resin adhesive liquid, one layer of fiber cloth, and all angles are uniformly superimposed in resin adhesive liquid, the number of plies of fiber cloth
For 5-7 layers, base material blank is obtained, be subsequently adding temperature-pressure shaping in mould.The mould of FRP stiffeners is that upper epidermis has
1.5mm's sink, and the length and width of the part surface that sink all compare the little 1cm of original size.The compression performance of FRP stiffeners is better than it
The compression performance of stiffener made by his material.Rubber support using FRP plate is more preferable than other vibration absorption and isolation support performances, and
And due to the density of FRP plate it is all much smaller for steel plate or others put more energy into plate material, so it is identical to compare other
Rubber support (such as laminated rubber bearing and pot rubber bearing) under size, weight is less, and cost is lower.
Research shows that the output energy of n-layer piezoelectric element is n times of single layer piezoelectric element.In the present invention, stiffener and
The rubber number of plies is into multiple proportion, and the rubber number of plies is 2 times of stiffener, is, in order to more preferably protect stiffener, not allow it directly to receive
Power, prevents from damaging.The effect in parallel in order to reach piezoelectric patches, using the structure of multilayer FRP stiffener, is beneficial to piezo-electric effect product
Raw electricity.Experiment shows, when FRP stiffeners reach 10 layers, if continuing the number of plies for increasing FRP stiffeners, FRP stiffeners
Be equivalent to rigid body relative to rubber support structure, it is pressurized after can produce very big deformation, paste PZT-5X piezoelectricity in the above
Potsherd also can be damaged therewith large deformation is produced, so as to not reach the effect of damping and piezoelectricity.Therefore, rubber support of the present invention
Structure is preferably provided with 10 layers of FRP stiffeners, 20 layers of rubber, and 10 layers of FRP stiffeners can paste altogether 10 lamination electric devices, different layers
Piezoelectric element on stiffener is connected in parallel, therefore a rubber support structure output energy is that individual layer FRP stiffeners export electric energy
10 times.That is, the number of plies of FRP stiffeners draws after corresponding pressure alteration has been done, and under this ratio, 10 layers
During FRP stiffener stress, the electricity and stress of generation are best.
Such as Fig. 2, the electricity generation system of the present invention is including rubber support structure 1, wire 4, battery 5, control device 6, point electricity
Disk 7 and voltameter 8；Wherein rubber support structure has multiple, between the box beam 2 and bridge pier 3 of bridge.Each rubber support knot
After piezoelectric patches in structure is with parallel way connection, Jing wires are connected with battery 5, and battery 5 is controlled by control device, Jing bridges
Power supply circuits power to electrical equipment on bridge.Diode is set in circuit that can be between piezoelectric patches 13 and battery 5, to control
Electric current single flow direction battery 5 processed；The diode may be provided at the input of battery.
When bridge occurs vibrations or has vehicle travels, rubber support structure 1 is deformed upon so that be provided at its inner portion
The bend by pressure of piezoelectric patches 13 discharge certain electric energy, and store in battery 5 through wire, reach current collection purpose.Store
Battery 5 is powered by power supply circuits to electrical equipment on bridge, and control device 6, distributor cap 7 and voltameter are provided with power supply circuits
8.Distributor cap 7 is used for control voltage and electric current, prevents that voltage is excessive to puncture piezoelectric ceramic piece.Voltameter 8 is used to monitor generated energy,
Whether the deformation that the piezo-electric effect and inside of piezoelectric ceramic piece can be monitored increases.According to the difference of bridge type, this generating system
The electric energy that system is produced can difference, can be electricity consumption facility power on bridge when the electric energy for producing is sufficient, such as street lamp, mark
Lamp or Landscape Lamp etc..Further, it is also possible to arrange intelligent control unit in control device, electric power storage is realized by intelligent control unit
To the intelligent power supply of electrical equipment, the intelligent control unit is connected with remote monitoring center in pond, receives the control of remote monitoring center
System order.
It is with the PZT-5X piezoelectric ceramic pieces with senior electric coupling coefficient, high-tension electricity strain constant and high resistivity below
Example, to the rubber support structure and electricity generation system of the present invention further description is done：
Certain bridge across rivers, about 1.285 kilometers of total length, wherein 876 meters of overall length of bridge, 33.5 meters of main bridge Breadth Maximum,
139 meters of maximum span, is two-way six-lane single column stayed-cable bridge, speed 80km/h, most average daily traffic volume 40000～80000
.Rubber support structure adopts size 250mm × 210 × 75mm, it is considered to the size of rubber support structure, piezoelectric vibrator it is intrinsic
It is 50mm × 30mm × 1.5mm that the principle of frequency and cost minimization chooses the size of PZT-5X piezoelectric ceramic pieces.For piezoelectricity unit
Part, under extraneous stress, upper and lower surface can produce piezoelectric charge, and, equivalent to an electric capacity, electric capacity is at the two poles of the earth for piezoelectric element
Produce and just store certain energy after electric charge.Assume that the electric energy that transducer is changed all is exported and stored.For piezoelectricity pottery
Ceramics, stress suffered by rubber support structure：
The power for acting on PZT-5X piezoelectric ceramic pieces two ends is：Fmax=δmaxA=40000N
The calculation expression of charge Q is：Q=d33F
The C meter formula of piezoelectric element is：
Flowing through current strength I of the thickness direction of piezoelectric patches 13 can be expressed as:
The voltage produced on the thickness direction of piezoelectric patches 13 can be expressed as：
Wheel passes through the electric energy W for once being changed to rubber support structure：
In formula：F-piezoelectric patches bears pressure；H-piezoelectric patches thickness；A-patch area；W-loading frequency；ε—
The free dielectric constant of piezoelectric, ε=ε0×εr；ε0The permittivity of vacuum ε of-piezoelectric0=8.854 × 10-12F/m
=8, εrThe relative dielectric of-piezoelectric is normal；d33- piezoelectric modulus；ε33=4500 ε0, K33=0.77, d33=750pcN-1N。
Can be calculated by above formula：
Electric current I=d33Fw=750 × 10-12C/N × 40000N × 0.1HZ=3 μ A
Producing electric energy is：
10 layers of FRP stiffeners, 20 layers of rubber due to rubber support structure setting, 10 layers of FRP stiffeners can be pasted altogether
Fix 10 lamination electric devices；When a motor vehicle passes through bridge, to PZT-5X piezoelectric ceramic pieces, have on one layer of FRP stiffener
Four PZT-5X piezoelectric ceramic pieces, produce the electric energy of 45.2mJ, and the electric energy of 10 times of a rubber support structure common property life produces
The electric energy of 452mJ.Calculate by vehicle flowrate 4-8 ten thousand, each pair rubber support can produce altogether (1.8-3.6) × 104The energy of J, can
Two hours of energy-saving bulb for a 50W or so.If 876 meters of bridge length, the electricity that piezoelectric ceramic piece is produced in rubber support
Amount can be well the facility power on bridge floor.
Here provide only a specific example to illustrate.Actually piezoelectric ceramics can be according to the pressure resistance of material
Degree so as to which two ends can bear bigger pressure, from the material of the high conversion rates such as PZT-5X, increases number of plies of piezoelectric patches etc.,
The electricity that piezoelectric ceramics is produced can be set to be multiplied.The present invention installs simple, and usage cycles are long, will not be to original bridge structure
Substantial change is made, the secondary utilization of discarded energy, environmental protection, with long-range economic results in society can be realized.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention not by above-described embodiment
Limit, other any Spirit Essences without departing from the present invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of rubber support structure based on piezo-electric effect, it is characterised in that including bottom rubber layer, stiffener, top rubber
Glue-line and some piezoelectric patches；Stiffener is arranged in the rubber layer of bottom, and some piezoelectric patches are disposed in an evenly spaced relation on stiffener, if
Dry piezoelectric patches is connected in parallel, and top rubber layer is arranged on some piezoelectric patches；The area coverage of the piezoelectric patches is at least accounted for puts more energy into
The 4/5 of plate suqare.
2. the rubber support structure based on piezo-electric effect according to claim 1, it is characterised in that the piezoelectric patches is pasted
It is fixed on stiffener.
3. the rubber support structure based on piezo-electric effect according to claim 2, it is characterised in that the piezoelectric patches with plus
The adhesion strength of strength plate is more than 10Mpa.
4. the rubber support structure based on piezo-electric effect according to claim 1, it is characterised in that if the stiffener is
Rectangle, then the piezoelectric patches area coverage is with the circle of a length of diameter of stiffener minor face；If the stiffener is circle, institute
State piezoelectric patches and cover whole stiffener.
5. the rubber support structure based on piezo-electric effect according to claim 1, it is characterised in that the piezoelectric patches is pressure
Electroceramics piece, the thickness of the piezoelectric ceramic piece is 1-2mm.
6. the rubber support structure based on piezo-electric effect according to claim 1, it is characterised in that the stiffener is
FRP plate, the bottom rubber layer, top rubber layer are natural rubber.
7. the rubber support structure based on piezo-electric effect according to claim 1, it is characterised in that the bottom rubber
Layer, top rubber layer, stiffener are respectively equipped with 10 layers, some piezoelectric patches are equipped with every layer of stiffener, on different layers stiffener
Piezoelectric patches be connected in parallel.
8. a kind of electricity generation system of the rubber support structure based on piezo-electric effect, it is characterised in that including at least one such as right
Require the rubber support structure based on piezo-electric effect any one of 1-7, and battery and control device；Described at least one
The individual rubber support structure based on piezo-electric effect is arranged between the box beam of bridge and bridge pier；Rubber respectively based on piezo-electric effect
After piezoelectric patches in holder structure is with parallel way connection, Jing wires are connected with battery；The control device is arranged on bridge
On power supply circuits, battery is controlled by control device, Jing power supply circuits and powers to electrical equipment on bridge.
9. the electricity generation system of the rubber support structure of piezo-electric effect is based on according to claim 8, it is characterised in that the bridge
The power supply circuits of beam are additionally provided with the distributor cap for control voltage and electric current.
10. the electricity generation system of the rubber support structure of piezo-electric effect is based on according to claim 8, it is characterised in that described
The power supply circuits of bridge are also additionally provided with the voltameter for monitoring generated energy.
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| CN201611216740.4A CN106655887B (en) | 2016-12-26 | 2016-12-26 | A kind of rubber support structure and its electricity generation system based on piezoelectric effect |
| JP2017248672A JP6327773B1 (en) | 2016-12-26 | 2017-12-26 | A kind of rubber bearing structure with piezoelectric effect and its power generation system |
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| CN201611216740.4A CN106655887B (en) | 2016-12-26 | 2016-12-26 | A kind of rubber support structure and its electricity generation system based on piezoelectric effect |
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| CN106655887B CN106655887B (en) | 2019-02-15 |
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| CN108166381A (en) * | 2017-12-18 | 2018-06-15 | 武汉科技大学 | A kind of bridge pad damping device based on piezoelectric ceramics |
| CN110198024A (en) * | 2019-06-04 | 2019-09-03 | 大连理工大学 | A kind of damper based on piezoelectricity energy consumption |
| CN112072957A (en) * | 2020-09-01 | 2020-12-11 | 深圳技术大学 | Micro-deformation piezoelectric energy collecting device and method applied to road surface |
| CN112284375A (en) * | 2020-10-23 | 2021-01-29 | 安徽建筑大学 | Support monitoring system and monitoring method capable of monitoring bridge attitude and stress level |
| CN113489371A (en) * | 2021-06-29 | 2021-10-08 | 中车青岛四方车辆研究所有限公司 | Energy feedback type rubber node, design method and device and electronic equipment |
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| CN108914764B (en) * | 2018-08-29 | 2023-10-27 | 广州大学 | Bridge energy consumption damping mechanism adopting viscous damper |
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| JP2018105112A (en) | 2018-07-05 |
| JP6327773B1 (en) | 2018-05-23 |
| CN106655887B (en) | 2019-02-15 |
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