CN110752782B - Structure for collecting road vibration energy by utilizing piezoelectric transducer and construction method and test method thereof - Google Patents
Structure for collecting road vibration energy by utilizing piezoelectric transducer and construction method and test method thereof Download PDFInfo
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- 238000010998 test method Methods 0.000 title claims abstract description 10
- 238000010276 construction Methods 0.000 title abstract description 9
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- 230000007246 mechanism Effects 0.000 claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 21
- 239000010949 copper Substances 0.000 claims abstract description 21
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- 238000010248 power generation Methods 0.000 claims description 13
- 230000009466 transformation Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 230000006641 stabilisation Effects 0.000 claims description 7
- 238000011105 stabilization Methods 0.000 claims description 7
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- 238000000034 method Methods 0.000 claims description 4
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- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
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- 239000004575 stone Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
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- 230000002463 transducing effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
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Abstract
The invention discloses a structure for collecting road vibration energy by utilizing a piezoelectric transducer, which comprises the piezoelectric transducer, wherein the piezoelectric transducer comprises a vibration piezoelectric mechanism, the vibration piezoelectric mechanism comprises a piezoelectric transducer shell embedded in a concrete road surface, the piezoelectric transducer shell comprises a lower shell and an upper shell, a piezoelectric ceramic assembly is arranged in the piezoelectric transducer shell, a rubber pad is arranged between the top wall of the upper shell and the piezoelectric ceramic assembly below the piezoelectric ceramic assembly, the piezoelectric ceramic assembly comprises vertical ceramic units, the ceramic units are separated by insulating nylon, a copper sheet transversely separates the whole ceramic assembly, the ceramic units are connected in parallel through copper sheets, and the copper sheets are connected with an external piezoelectric transduction collector through a conductive wire penetrating through a conductive wire channel. The invention also provides a construction method and a test method of the piezoelectric structure. The piezoelectric structure can convert mechanical energy of vehicle vibration in a road into electric energy and collect and utilize the electric energy.
Description
Technical Field
The invention relates to a structure for collecting road vibration energy by utilizing a piezoelectric transducer. The invention also relates to a construction method of the structure for collecting road vibration energy by using the piezoelectric transducer. The invention also relates to a test method of the structure for collecting road vibration energy by using the piezoelectric transducer.
Background
China has rapid traffic development, roads are subject to repeated loading action of automobiles, a large amount of mechanical energy can be generated, and if electricity can be generated through a piezoelectric transducer, good economic and environmental benefits are inevitably generated. Illuminating lamps, indicator lamps, monitoring equipment, communication equipment, sensing equipment and the like used on roads need to be powered to maintain normal use, but with the development of traffic construction, the construction of remote mountainous areas has many problems, and the power-requiring equipment on the road surface cannot be normally used or the cost investment is too high.
For the current piezoelectric test, only the theoretical aspect is usually existed, and the single theoretical calculation is usually far from the actual situation. Therefore, the indoor simulation test method for collecting road vibration energy by using the piezoelectric transducer simulates road traffic through an indoor test model, the piezoelectric transducer is preset in the road surface, different actual traffic environments are simulated through coordinated loading of the three vibration exciters, and finally the piezoelectric collector collects electric quantity, so that the collection benefit of the piezoelectric transducer can be obtained more accurately.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problem to be solved by the invention is to provide a structure for collecting road vibration energy by utilizing a piezoelectric transducer, wherein the structure is more stable, the bearing capacity is stronger, and the current collection efficiency is higher. The technical problem to be solved by the invention also comprises providing a construction method of the structure for collecting road vibration energy by using the piezoelectric transducer. The technical problem to be solved by the invention also comprises a test for providing the structure for collecting the road vibration energy by using the piezoelectric transducer.
Therefore, the structure for collecting road vibration energy by using the piezoelectric transducer comprises the piezoelectric transducer, wherein the piezoelectric transducer comprises a vibration piezoelectric mechanism, the vibration piezoelectric mechanism comprises a piezoelectric transducer shell embedded in a concrete road surface, the piezoelectric transducer shell comprises a lower shell and an upper shell, a piezoelectric ceramic assembly is arranged in the piezoelectric transducer shell, a rubber pad is arranged between the top wall of the upper shell and the piezoelectric ceramic assembly below the upper shell, the piezoelectric ceramic assembly comprises vertical ceramic units, the ceramic units are separated by insulating nylon, a copper sheet transversely separates the whole ceramic assembly, the ceramic units are connected in parallel through copper sheets, and the copper sheets are connected with an external piezoelectric transduction collector through a conductive wire penetrating through a conductive wire channel.
The construction method of the structure for collecting road vibration energy by using the piezoelectric transducer provided by the invention comprises the following steps:
A. installing the piezoelectric ceramic assembly into the piezoelectric transducer housing;
B. electrically connecting the piezoelectric ceramic component with the piezoelectric transduction collector;
C. road is laid and the placement of transducing volume piezoelectric transducer, includes the following:
D. and (5) flattening the road surface.
The invention provides a test method for a structure for collecting road vibration energy by using a piezoelectric transducer, which comprises the following steps:
A. installing the piezoelectric ceramic assembly into the piezoelectric transducer housing;
B. electrically connecting the piezoelectric ceramic component with the piezoelectric transduction collector;
C. road is laid and the placement of transducing volume piezoelectric transducer, includes the following:
D. indoor traffic load piezoelectricity is experimental, through host computer system control frequency and load size, the simulation road vehicle condition specifically as follows:
The invention has the technical effects that:
1. piezoelectric transducer's whole sealing performance is better, more can adapt to open air complex environment, avoids leading to components and parts wherein to be corroded because of getting into external foreign matter, is favorable to increase of service life.
2. The piezoelectric ceramic assembly comprises vertical ceramic units, the ceramic units are separated by insulating nylon, the copper sheets transversely separate the whole ceramic assembly, and the ceramic units are connected in parallel through the copper sheets.
3. The rubber pad is arranged above the piezoelectric ceramic component through the pad, so that the piezoelectric ceramic is properly buffered, and meanwhile, enough pressure is kept after the piezoelectric ceramic is pressed under the condition to generate current.
Drawings
Fig. 1 is a schematic structural cross-sectional view of a vibrating piezoelectric mechanism according to the present invention.
FIG. 2 is a diagram of a test model of a configuration for collecting road vibration energy using a piezoelectric transducer according to the present invention.
Fig. 3 is a circuit diagram of the electric energy collection of the piezoelectric transducer provided by the invention.
Fig. 4 is a three-dimensional view of the vibrating piezoelectric mechanism of fig. 1, with a partial cross-section.
Fig. 5 is a schematic structural sectional view of the integrated power generation mechanism provided by the present invention.
Description of reference numerals:
1. the device comprises a rubber pad, 2, an upper shell, 3, a sealing ring, 4, a lower shell, 5, insulating nylon, 6, a phosphor copper sheet, 7, a piezoelectric ceramic component, 8, a lead channel, 9, a piezoelectric transduction collector, 10, a roadbed, 11, a cement stabilized gravel layer, 12, a concrete pavement slab, 13, a traffic load model groove, 14, a piezoelectric energy transducer, 15, a vibration exciter, 16, a variable resistor, 17, an alternating resistor, 18, a capacitor, 19, a battery, 20, a diode, 21, a rectifier bridge, 22, an upper end shell, 23, a lower end shell, 24, an upper voltage transformation module, 25, a lower voltage transformation module, 26, a middle rod, 27, an elastic cushion layer, 28 and an annular guard plate.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Referring to fig. 1-4, the structure for collecting road vibration energy by using a piezoelectric transducer provided by the invention comprises a piezoelectric transducer 14, wherein the piezoelectric transducer 14 comprises a vibration piezoelectric mechanism, the vibration piezoelectric mechanism comprises a piezoelectric transducer shell embedded in a concrete road surface, the piezoelectric transducer shell comprises a lower shell 4 and an upper shell 2, a piezoelectric ceramic assembly 7 is arranged in the piezoelectric transducer shell, a rubber pad 1 is arranged between the top wall of the upper shell 2 and the piezoelectric ceramic assembly 7 below the upper shell, the piezoelectric ceramic assembly comprises vertical ceramic units, the ceramic units are separated by insulating nylon 5, copper sheets 6 transversely separate the whole ceramic assembly, the ceramic units are connected in parallel through copper sheets 6, and the copper sheets 6 are connected with an external piezoelectric transducer collector 9 through a conductive wire penetrating through a wire channel 8.
The piezoelectric ceramic component is formed by sequentially and transversely distributing at least two copper sheets 6 along the height direction and separating the ceramic units above and below the copper sheets 6. During rubber pad 1 lower part was embedded into lower casing 4, upper portion was embedded into last casing 2, was provided with sealing washer 3 between 2 inside walls of last casing and the rubber pad, form annular ladder groove on the 8 outer end inside walls of wire passageway, it is equipped with sealing washer 3 to inlay in the annular ladder groove. The piezoelectric transducer is preset inside the concrete pavement slab 12 in advance, and is placed on the upper part of the cement stabilized gravel layer 11 after the concrete pavement slab 12 is cured and compacted.
Piezoelectric transducer is including synthesizing the power generation mechanism, synthesizes power generation mechanism and includes upper end shell 22 and lower extreme shell 23, is provided with last voltage transformation module 24 and lower voltage transformation module 25 in upper end shell 22 and the lower extreme shell 23 respectively, goes up to press to transform module 24 and connect through intermediate lever 26 between the transformer module 25 down, go up to press to transform module 24 and lower voltage transformation module 25 through the conductor wire with piezoelectric transduction collector 9 connects, the cover has elastic cushion 27 on the intermediate lever 26, and elastic cushion 27 pads up between upper end shell 22 and the lower extreme shell 23, synthesize power generation mechanism and vibration power generation mechanism interval distribution in turn and connect in parallel jointly in piezoelectric transduction collector 9, synthesize power generation mechanism and pass through rectifier circuit and connect in piezoelectric transduction collector 9. In order to better protect the comprehensive power generation mechanism, an annular guard plate 28 is fixed on the periphery of the elastic cushion layer 27, glue (such as epoxy bar-planting glue) with elasticity after solidification is poured between the annular guard plate 28 and the upper end shell 22 and the lower end shell 23, the height of the annular guard plate 28 is larger than the thickness of the elastic cushion layer 27, and the annular guard plate 28 can protect the elastic cushion layer 27. The combined structure of the comprehensive power generation mechanism and the vibration piezoelectric mechanism adopted by the invention can enable the piezoelectric transducer to bring energy through vehicle vibration, and enable the comprehensive power generation mechanism to deflect and displace and the like through vehicle rolling, so that more energy is collected, and the efficiency of electric energy collection and conversion is improved through enriching the diversity of energy collection modes.
The construction method of the structure for collecting road vibration energy by using the piezoelectric transducer provided by the invention comprises the following steps:
A. mounting the piezoceramic component 7 into the piezoelectric transducer housing;
B. electrically connecting the piezoelectric ceramic component 7 with the piezoelectric transduction collector 9;
C. road is laid and the placement of transducing volume piezoelectric transducer, includes the following:
D. and (5) flattening the road surface.
The invention provides a test method for a structure for collecting road vibration energy by using a piezoelectric transducer, which comprises the following steps:
A. mounting the piezoceramic component 7 into the piezoelectric transducer housing;
B. electrically connecting the piezoelectric ceramic component 7 with the piezoelectric transduction collector 9;
C. road is laid and the placement of transducing volume piezoelectric transducer, includes the following:
D. indoor traffic load piezoelectricity is experimental, through host computer system control frequency and load size, the simulation road vehicle condition specifically as follows:
In the step A: the piezoelectric ceramic 7 is a single square column type piezoelectric ceramic, the length and width of the piezoelectric ceramic 7 are 0.02m, the height of the piezoelectric ceramic is 0.015m, and the copper sheet 6 is a phosphorus copper sheet.
In the step C: when the roadbed 10 is paved with soil in a layering way, the thickness of each layer is 0.2m, and the compaction degree reaches more than 93% by rolling the roadbed through a roller for the same times; the piezoelectric transducer shell is arranged on the cement-stabilized rubble layer 11, the cement consumption of the cement-stabilized rubble layer 11 is 3% -6% of that of the mixture, the unconfined compressive strength of 7 days can reach 5.0Mpa, and the thickness is 0.05 m; the concrete cement panel 12, its cement: sand: stone: the mixing ratio of water is 1: 1.3: 2.1: 0.52; and D, controlling a vibration exciter to excite the road surface by the host control system, and simulating the traffic vehicles with different weights and different speeds in actual traffic by controlling the frequency (0-15Hz) and the load (1000N-5000N).
The test method of the present invention is explained in detail below by specific examples:
in order to study the piezoelectric energy collection of the traffic road, the present embodiment refers to the test device shown in fig. 1, 2, and 3, and the following steps are performed:
firstly, designing a structure of a piezoelectric energy piezoelectric transducer, and manufacturing the structure into a sealing structure to protect an internal piezoelectric column from being corroded by external environment.
The piezoelectric transducer in this embodiment includes: the lower shell 4 and the upper shell 2; the upper shell 2 is contacted with the rubber pad 1 through a sealing ring 3; the internal piezoelectric square columns are connected in parallel through copper sheets 6; the transverse ceramics are separated by insulating nylon 5, and finally energy is transmitted to the outside through a wire channel 8.
Secondly, designing a piezoelectric energy acquisition circuit to better improve the electric quantity acquisition efficiency;
in this embodiment, the piezoelectric transduction collector includes: 16 is a variable resistor, 17 is an alternating resistor, 18 is a capacitor, 19 is a battery, 20 is a diode, and 21 is a rectifier bridge.
Thirdly, paving a road and placing piezoelectric transducers for transducing quantity to simulate an actual traffic load road section as much as possible, wherein the actual traffic load road section comprises an internal structure of the road section and the arrangement of the piezoelectric transducers for transducing quantity, and the method comprises the following specific steps:
The roadbed 10 in the embodiment rolls by the roller for the same times to ensure that the compaction degree reaches more than 93%.
In the embodiment, the cement consumption of the cement stabilized gravel layer is generally 3% -6% of the mixture, and the unconfined compressive strength of the mixture in 7 days can reach 5.0 Mpa. The thickness is 0.05m
In the present embodiment, the concrete panel 12 is prepared by mixing cement: sand: stone: 1 part of water: 1.3: 2.1: 0.52
The fourth step, indoor traffic load piezoelectricity is experimental, through host system control frequency and load size, simulates the road vehicle condition, and is specific:
The foregoing description of specific embodiments of the present invention has been presented. It is to be noted that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the appended claims without affecting the essence of the present invention.
Claims (5)
1. The utility model provides an utilize piezoelectric transducer to collect road vibration energy's structure, includes piezoelectric transducer, and piezoelectric transducer includes vibration piezoelectric mechanism, and vibration piezoelectric mechanism is including burying the piezoelectric transducer casing in the concrete road surface underground, characterized by: the piezoelectric transducer comprises a piezoelectric transducer shell and a piezoelectric transducer shell, wherein the piezoelectric transducer shell comprises a lower shell (4) and an upper shell (2), a piezoelectric ceramic assembly (7) is arranged in the piezoelectric transducer shell, a rubber pad (1) is arranged between the top wall of the upper shell (2) and the piezoelectric ceramic assembly (7) below the upper shell, the piezoelectric ceramic assembly (7) comprises ceramic units, the ceramic units are separated by insulating nylon (5), a copper sheet (6) transversely separates the whole ceramic assembly, the ceramic units are connected in parallel through the copper sheet (6), and the copper sheet (6) is connected with an external piezoelectric transduction collector (9) through a conducting wire penetrating through a conducting wire channel (8); the piezoelectric ceramic component (7) is formed by sequentially and transversely distributing at least two copper sheets (6) along the height direction and separating the ceramic units above and below the copper sheets (6); the lower part of the rubber pad (1) is embedded into the lower shell (4), the upper part of the rubber pad is embedded into the upper shell (2), a sealing ring (3) is arranged between the inner side wall of the upper shell and the rubber pad, an annular stepped groove is formed on the inner side wall of the outer end of the wire channel (8), and the sealing ring (3) is embedded in the annular stepped groove; the piezoelectric transducer is preset in the concrete pavement slab (12) in advance, and is placed on the upper part of the cement stable gravel layer (11) after the concrete pavement slab (12) is cured and compacted; the piezoelectric transducer comprises a comprehensive power generation mechanism, the comprehensive power generation mechanism comprises an upper end shell (22) and a lower end shell (23), an upper voltage transformation module (24) and a lower voltage transformation module (25) are respectively arranged in the upper end shell (22) and the lower end shell (23), the upper voltage transformation module (24) and the lower voltage transformation module (25) are connected through an intermediate rod (26), the upper voltage transformation module (24) and the lower voltage transformation module (25) are connected with the piezoelectric energy transformation collector (9) through electric leads, an elastic cushion layer (27) is sleeved on the middle rod (26), the elastic cushion layer (27) is arranged between the upper end shell (22) and the lower end shell (23), the comprehensive power generation mechanism and the vibration piezoelectric mechanism are alternately distributed at intervals and are connected in parallel with the piezoelectric transduction collector (9) together, and the comprehensive power generation mechanism is connected to the piezoelectric transduction collector (9) through a rectification circuit.
2. The structure for collecting road vibration energy by using piezoelectric transducer as claimed in claim 1, wherein: annular backplate (28) are fixed with in elasticity bed course (27) periphery, and it has elastic glue to pour into between annular backplate (28) and upper end shell (22) and lower extreme shell (23) after solidifying, and the height of annular backplate (28) is greater than the thickness of elasticity bed course (27), and annular backplate (28) can protect elasticity bed course (27).
3. A method of constructing a structure for collecting road vibration energy using a piezoelectric transducer as claimed in claim 1, wherein: the method comprises the following steps:
A. -mounting the piezo-ceramic component (7) into the piezo-electric transducer housing;
B. electrically connecting the piezoelectric ceramic component (7) with the piezoelectric transduction collector (9);
C. road paving and piezoelectric transducer placement, comprising the following:
1) and (3) roadbed stacking: laying soil layer by layer, controlling compaction degree, laying soil body on the roadbed layer by layer, compacting by a roller after laying one layer, and ensuring that the compaction degree of each layer is consistent, thereby finishing laying the roadbed (10);
2) paving a water stabilizing layer: placing the cement stabilized rubble layer (11) which is cured and compacted in advance on the roadbed;
3) piezoelectric transducer placement: after the piezoelectric transducer (14) is sealed and installed, the piezoelectric transducer is preset in the concrete pavement slab in advance, is led out by an electric wire and is connected to the piezoelectric transducer collector (9), and is placed on the upper part of the water stabilization layer after the concrete pavement slab (12) is cured and compacted;
D. and (5) flattening the road surface.
4. A method of testing a structure for collecting road vibration energy using a piezoelectric transducer as claimed in claim 1, wherein: the method comprises the following steps:
A. -mounting the piezo-ceramic component (7) into the piezo-electric transducer housing;
B. electrically connecting the piezoelectric ceramic component (7) with the piezoelectric transduction collector (9);
C. road paving and piezoelectric transducer placement, comprising the following:
and (3) roadbed stacking: laying soil in layers, and controlling compaction degree: laying soil bodies into a traffic load model groove (13) in layers, compacting the soil bodies by using a roller after laying one layer, and ensuring that the compaction degree of each layer is consistent, thereby completing the roadbed (10);
paving a water stabilizing layer: placing the cement stabilized rubble layer (11) which is cured and compacted in advance on the roadbed;
piezoelectric transducer placement: after the piezoelectric transducer (14) is sealed and installed, the piezoelectric transducer is preset in the concrete pavement slab in advance, is led out by an electric wire and is connected to the piezoelectric transducer collector (9), and is placed on the upper part of the water stabilization layer after the concrete pavement slab (12) is cured and compacted;
D. indoor traffic load piezoelectricity is experimental, through host computer system control frequency and load size, the simulation road vehicle condition specifically as follows:
the vibration exciter (15) is controlled by a host control system to excite the road surface, and the traffic vehicles with different weights and different speeds in the actual traffic are simulated by controlling the frequency to be 0-15Hz and the load to be 1000N-5000N;
in the design time, the electric quantity collected from the traffic load is calculated through the piezoelectric energy conversion collector (9), and the electric energy collection efficiency is calculated.
5. A test method of a configuration for harvesting roadway vibrational energy using a piezoelectric transducer as in claim 4, wherein: in the step A: the piezoelectric ceramic (7) is a single square column type piezoelectric ceramic, the length and width of the piezoelectric ceramic (7) are 0.02m, the height of the piezoelectric ceramic is 0.015m, and the copper sheet (6) is a phosphor copper sheet; in the step C: when the roadbed (10) is paved with soil in a layered way, the thickness of each layer is 0.2m, and the compaction degree reaches more than 93% by rolling the roadbed through a roller for the same times; the piezoelectric transducer shell is arranged on the cement-stabilized rubble layer (11), the cement consumption of the cement-stabilized rubble layer (11) is 3% -6% of that of the mixture, the unconfined compressive strength of 7 days can reach 5.0Mpa, and the thickness is 0.05 m; the concrete pavement slab (12) comprises: sand: stone: the mixing ratio of water is 1: 1.3: 2.1: 0.52; and D, controlling a vibration exciter to excite the road surface by the host control system, and simulating the traffic vehicles with different weights and different speeds in the actual traffic by controlling the frequency of 0-15Hz and the load of 1000N-5000N.
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| CN113125869A (en) * | 2021-03-11 | 2021-07-16 | 温州大学 | Model box for monitoring power generation performance of piezoelectric ceramics |
| CN114137351A (en) * | 2021-12-10 | 2022-03-04 | 同济大学 | Pavement piezoelectric energy acquisition system and evaluation method |
| CN115849902B (en) * | 2022-11-02 | 2024-01-23 | 温州大学 | Piezoelectric ceramic formula suitable for road vibration energy harvesting technology, preparation method and application thereof |
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Application publication date: 20200204 Assignee: Jiaxing Middle Road Construction Engineering Co.,Ltd. Assignor: Wenzhou University Contract record no.: X2023330000379 Denomination of invention: Construction and testing methods for collecting road vibration energy using piezoelectric transducers Granted publication date: 20220118 License type: Common License Record date: 20230705 |
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