KR101080162B1 - Piezoelectric generator for road and its construction method - Google Patents

Abstract

PURPOSE: A piezoelectric generating device for a road and an installation method thereof are provided to introduce the vibration of a piezoelectric plate without the deformation of a closure. CONSTITUTION: A piezoelectric generating device for a road comprises an elongate housing(20), an elevation module(30) and a cantilever type piezoelectric plate(40). The elongate housing has open top. The elongate housing is combined with the elevation module. The cantilever type piezoelectric plate is built in the elevation module. Weight(41) is installed in the leading end of the cantilever type piezoelectric plate. The elevation module exposes to the upper side of a finishing material(11). A stopper(24) is formed on the upper part of the housing. The stopper controls the separation of housing from the elevation module.

Description

Piezoelectric power generation device for roads and its installation method {PIEZOELECTRIC GENERATOR FOR ROAD AND ITS CONSTRUCTION METHOD}

The present invention relates to a piezoelectric power generation device embedded in the road pavement (11), the rectangular housing 20, coupled to the housing 20 is raised and raised under the action of the external force and the cantilever-type piezoelectric plate 40 is Consists of a built-in elevating module 30, to directly induce vibration of the piezoelectric plate 40 without directly hitting the piezoelectric plate 40 or causing deformation in the enclosure in which the piezoelectric plate 40 is built The dowel bar 21 may be formed on both sides of the housing 20 to allow load transfer between the unit packages 11 during contraction and expansion of the package 11.

A piezoelectric body is a compound or mixture that converts physical deformation into electric power. When deformation due to external force occurs, a polarization is induced, and the piezoelectric effect that an electric field is formed by the polarization is expressed. Representative examples include lead zirconium-titanium composite oxides (PZT).

The piezoelectric plate 40 is a piezoelectric body formed in a plate shape, and currents in opposite directions are generated as the tensile and compressive forces act on the piezoelectric plate 40, and bottom support, both ends support, and cantilever are performed. The deformation and output current waveforms during external force action in accordance with the mechanical aspect are shown in FIG. 1.

The cantilever shown at the bottom of the structure of the piezoelectric plate 40 shown in FIG. 1 may be said to be the most advantageous form in terms of deformation and vibration efficiency, and the illustrated structure may apply external force to the free end of the cantilevered piezoelectric plate 40. After deforming by applying external force, vibration is induced, and when it is deformed downward, tensile and compressive stresses are generated on the upper and lower surfaces of the cantilever, respectively, and on the upper and lower surfaces of the cantilever on the contrary, As compressive stress and tensile stress are generated, alternating current and alternating current are generated in the same phase or symmetrical phase until the vibration of the cantilever disappears.

Piezoelectric power generation apparatus using a wheel load acting on the road as an external force source is usually installed and operated in a way that is embedded in the road, as shown in Figure 2, the wheel load from the left side of the drawing on the piezoelectric plate ( 40 shows a simple plate type directly transmitted to 40, a box deformation type that causes deformation of the enclosure in which the piezoelectric plate 40 is installed, and a blow-type power generating device that strikes the piezoelectric plate 40.

The conventional road-embedded piezoelectric power generator has the following problems.

First, the simple flat power generating device on the left side of FIG. 2 is a method in which a compressive force is directly applied to the piezoelectric plate 40, and the entire bottom surface of the piezoelectric plate 40 is supported, so that sufficient deformation due to bending deformation cannot be expected. Secondary strain due to vibration after the second strain is hardly expected, so there is a problem in that the power output is insignificant.

Thus, as shown in the center portion and the right side of Fig. 2, the case of the deformation and the blow-type power generation apparatus with the cantilever-type piezoelectric plate 40 was developed, but in the case of the deformation of the enclosure, the possibility of fatigue failure due to frequent deformation of the enclosure is high. Since the displacement of the piezoelectric plate 40 due to the deformation of the piezoelectric plate 40 is bound to be limited, it is impossible to obtain great results in durability as well as power generation efficiency. There is a serious problem that is destroyed.

In particular, the blow type is necessary to mediate such as a strike weight to move apart from the housing in order to strike the piezoelectric plate 40, there is a problem in that it is difficult to secure the water-tightness structurally not suitable for use in the open air.

On the other hand, the above-described flat plate, box deformable and striking power generation device is a structure embedded in the road paving body 11, the structure is not carried out at all the load transfer between the surrounding pavement 11 and the power generation device, for a long time In use, not only is there a high possibility of shear failure of the package 11 adjacent to the power generation device, but also the package 11 itself as well as the package 11 and the generator in the process of repeated shrinkage and expansion of the package 11 itself. There is a serious problem that excessive stress is generated.

In addition, when dynamic separation between the power generating device and the road pavement 11 occurs due to the contraction and expansion of the road pavement 11, the wheel load acting on the top of the power generating device is substantially concentrated on the lower roadbed 13. As it acts, it causes excessive settlement of the roadbed 13, which in turn causes serious problems leading to chain settlement of the periphery roadbed 13 and destruction of the package 11.

In view of the above-described problems, the present invention incorporates the piezoelectric plate 40 into the hermetic enclosure 31, but provides sufficient deformation and vibration of the piezoelectric plate 40 without deforming the enclosure 31 or hitting the piezoelectric plate 40. Induces, ensures the convenience of maintenance work, such as replacement of the piezoelectric plate 40, and ensures the durability of the package 11 by enabling a smooth load transfer between the package 11 and the power generating device, It was created for the purpose of securing the structural stability of the entire road by preventing the phenomenon that excessive load is concentrated on the lower roadbed (13).

That is, in the piezoelectric power generation device embedded in the road pavement 11, a cantilever type piezoelectric plate having a weight 41 installed at a distal end thereof is formed inside the rectangular housing 20 having an open top. A lift module 30 having a built-in 40 is coupled, and an upper surface of the lift module 30 is exposed to the upper side of the package 11, and a spring 22 is disposed between the lift module 30 and the inner bottom of the housing 20. This is installed, the upper elastic force acts on the elevating module 30, the stopper 24 is formed on the upper end of the housing 20 to suppress the separation of the housing 20 of the elevating module 30, the elevating module 30 When the wheel load (車輪 荷重) acts on the upper surface of the elevating module 30 is lowered, and when the wheel load is released, the elevating module 30 is raised and restored by the elastic force of the spring 22, the elevating module 30 inside Piezoelectric power generation device for a road, characterized in that the piezoelectric plate 40 of the vibration is generated, the amount of the housing 20 Dowel-bars 21 which are horizontally embedded in the road pavement 11 are protrudingly formed on the wall, and at least one dowel bar of the dowel bars 21 on both side walls of the housing 20 is formed. 21 is a piezoelectric power generator for a road, characterized in that a lubricant is applied.

In addition, inside the elevating module 30, a plurality of cantilever-type piezoelectric plates 40 installed with weights 41 at the ends thereof are horizontally arranged, and fixed ends and free sides of adjacent cantilever-type piezoelectric plates 40 are installed. It is a piezoelectric power generation apparatus for a road, characterized in that alternately installed so that the positions of the stages are opposite to each other.

Further, in the installation method of the piezoelectric power generation device for roads, the compaction step (S11) and the compaction step (S11) formed in the compaction step (S11) Forming a smooth layer 12 by pouring a high-density filler into the mouth, and then forming a smooth layer 12 to planarize the smooth layer 12 so that the elevation of the top surface of the smooth layer 12 and the elevation of the surrounding roadbed 13 are formed. Mounting the housing 20 on top of the smooth layer 12, the mounting step (S21) for sealing the housing 20 by coupling the sealing plate 50 to the upper opening of the housing 20, and the housing 20 After pouring the package 11 on both sides, and flattening and curing the package body forming step (S30) and curing of the package 11 is completed, the sealing plate 50 is removed from the housing 20 and then the spring ( 22) and the lifting module 30 is coupled to the lifting module installation step (S40) of fastening the stopper 24 to the housing 20, the top The piezoelectric power generation device installation method for road, and the housing 20 is mounted on the top of the smooth layer 12 after the base forming step (S12), at least of the dowel bar 21 formed on both sides of the housing 20 One dowel bar 21 is applied to the lubricant, the upper opening of the housing 20 is coupled to the sealing plate 50, the coating step (S22) for sealing the housing 20 is performed Piezoelectric generator installation method.

Through the present invention, the inertial motion of the free end of the cantilever-type piezoelectric plate 40 and the piezoelectric plate 40 itself while ensuring the durability of the auxiliary structure, such as the enclosure 31 is structurally fixed to the piezoelectric plate 40 and By maximizing vibration, the power generation efficiency can be improved dramatically, and the power generation device itself can also serve as a transverse joint of the road pavement 11, so that the power generation device can be installed without installing a separate joint or using excessive materials. It is possible to secure the strength and durability of the peripheral pavement 11 and to effectively prevent shear and fatigue destruction, thereby improving the performance and usable life of the road and power generation apparatus.

In addition, the housing 20 and the piezoelectric plate 40 buried in the road is a sealed housing 31, the elevating module 30 is configured to separate, but the spring 22 for providing elasticity to the elevating module 30 ) And the stopper 24 to prevent the separation of the elevating module 30 to be assembled and dismantled quickly and easily in the field, while ensuring the watertightness between the operation of the elevating module 30 which is an electric device, 30) and the housing 20 can be easily removed and reinstalled to ensure convenience of maintenance.

In addition, when the road pavement 11 of the housing 20 is embedded, the sealing plate 50 is attached to the upper opening of the housing 20, so that the housing 20 may be used for placing and flattening the package 11. By blocking the inflow of foreign matters, including pours, there is a stable and smooth operation of the elevating module 30 after completion of the power generation device without performing a separate foreign matter removal process during the combined operation of the elevating module 30 thereafter. I did it.

1 is an explanatory diagram of a power generation method of a piezoelectric plate
2 is a representative cross-sectional view of a conventional road buried piezoelectric power generation device
Figure 3 is a transverse cross-sectional view of the installation state of the present invention
4 is a perspective view of the installation state of the present invention
5 is an exploded perspective view of the present invention
6 is a partially exploded perspective view of the present invention
7 is a diagram illustrating the power generation method of the present invention.
8 is an explanatory diagram of the construction process of the present invention
9 is a partially cut perspective view of the sealing plate coupled state of the present invention
Figure 10 is a longitudinal cross-sectional view of the joint embodiment installation state of the present invention
11 is a perspective view of a joint embodiment installation state of the present invention
12 is an exploded perspective view of a partially cut joint embodiment of the present invention
Figure 13 is an exploded perspective view of the elevating embodiment of the present invention module
14 is an explanatory view of the construction process of the joint embodiment of the present invention
15 is an explanatory diagram of a joint function performance state of the joint embodiment of the present invention;

Detailed configuration, operation and performance of the present invention will be described with reference to the accompanying drawings.

First, Figure 3 is a cross-sectional view and longitudinal cross-sectional view of the installation state of the present invention, as can be seen through the drawing, the power generation device of the present invention is coupled to the housing and the rectangular housing 20 is open top It consists of a lifting module (30).

The height of the housing 20 is formed to match the thickness of the package 11, and is embedded in the package 11 so that the bottom surface of the housing 20 is in contact with the smooth layer 12 to be described later.

An elevating module 30 matching the inner shape of the housing 20 is coupled to the inside of the housing 20, and a spring 22 is installed between the lower end of the elevating module 30 and the inner bottom of the housing 20 so that the elevating module ( 30) is applied upwardly, the lifting module 30 inside the cantilever (cantilever) type piezoelectric plate 40 installed with a weight (41) at the tip is installed as the lifting module 30 is elevated Deformation and vibration of the piezoelectric plate 40 are generated by the inertial force of the weight 41, thereby generating power.

As described above, the piezoelectric plate 40 applied to the present invention not only generates an alternating current according to the bending deformation, but also has an irregular characteristic in which the current also disappears as the vibration causing the bending deformation disappears. It is not easy to use, and therefore, it is used through a rectification process for converting alternating current into DC and smoothing waveforms and a process for storing power, but the components for performing such rectification or power storage are respectively installed on individual piezoelectric plates 40. In addition, various types of configurations are possible, such as installing integrated processing facilities on the road or outside, which can be selected by those of ordinary skill in the art to which the present invention pertains. Do not.

4 illustrates a state in which the power generation device, that is, the housing 20 and the elevating module 30 of the present invention is installed on the road. In the illustrated embodiment, it can be seen that the power generation device is installed on the track of the wheel. As can be seen through the drawings, the amount of power generation may be increased by continuously installing a plurality of power generation devices in the longitudinal direction.

5 is an exploded perspective view of the power generation device of the present invention, as can be seen through the same figure, by coupling the stopper module 30 to the housing 20, the spring 20 by coupling the lifting module 30 to the housing 20, Due to the elasticity of the 22 to prevent the lifting module 30 from leaving the housing 20, it is possible to maintain a stable exposure state on the road of the lifting module 30.

In addition, by forming the upper end of the elevating module 30 in a gentle arc shape, it is possible to minimize the impact on the elevating module 30 and the housing 20 when passing through the vehicle and to ensure the ride comfort of the occupant. .

FIG. 6 is a partially cutaway perspective view illustrating a coupling state between the housing 20 and the elevating module 30. As can be seen from the drawing, a plurality of springs (between the elevating module 30 and the housing 20) 22) is installed, the spring 22 is installed on the protrusion tube 23 of the housing 20 and the protrusion bar 33 of the elevating module 30 to the shaft to enable a stable lifting movement of the elevating module 30. And the elastic force of the multiple springs 22 to be evenly distributed.

That is, the ellipse enlarged portion of FIG. 3 and the elevating module 30, as shown in FIG. 6, is composed of an enclosure 31 having an inverted U-shaped cross section and a bottom plate 32 which closes the lower end of the enclosure 31. 32) A plurality of protruding rods 33 are formed in the lower portion, and protruding pipes 23 having the same number and same position as the protruding rods 33 are formed on the inner bottom surface of the housing 20. , So that the outer diameter of the protruding rod 33 and the inner diameter of the protruding tube 23 coincide, the protruding rod 33 is inserted into the protruding tube 23, and the spring 22 is the protruding rod 33 and the protruding tube. By moving the lifting module 30 in a coaxially coupled state to (23), it is to ensure a uniform distribution of the spring 22 elastic force and the vertical movement of the lifting module 30.

7 illustrates a process in which the elevating module 30 moves and the piezoelectric plate 40 vibrates as the wheel load acts. As can be seen from the drawing, the vehicle is once elevated above the elevating module 30. When passing through, the lifting module 30 overcomes the elasticity of the spring 22 by the wheel load and descends, at this time, the weight due to the inertia acting on the weight 41 of the tip of the piezoelectric plate 40 41) adheres to the original position, so that an external force that raises the free end of the piezoelectric plate 40 is relatively applied. Then, the wheel load is released and the elevating module 30 is suddenly caused by the spring force of the spring 22. As the vibration of the piezoelectric plate 40 is amplified, the vibration of the piezoelectric plate 40 is repeated for a certain period of time even after the elevating module 30 stops, thereby generating a current.

On the other hand, Figure 8 shows the process of installing the power generation apparatus of the present invention, the construction process of the present invention through the drawings in detail as follows.

First, in order to form the smooth layer 12 at the installation point of the power generation device, the recessed part is formed in the subgrade 13, in which the recessed part is formed by partially excavating the subgrade 13. ) Is further advantageous in terms of bearing capacity in such a way that it is further compacted to dent the point.

As such, when the compacting step (S11) of further compacting the roadbed 13 of the power generation device installation point to form the recessed part is completed, the high-density filler is poured into the subbed indentation formed in the compacting step (S11) to smooth the layer. After forming (12), the base forming step S12 is performed to planarize the smooth layer 12 so that the elevation of the top surface of the smooth layer 12 and the elevation of the surrounding roadbed 13 are coincident with each other.

Cement paste, water glass, or epoxy resin, which is poured into the recess of the bed 13 in the foundation forming step S12, may include a smooth layer ( After the casting, flattening and curing of 12) is completed, a lubricant may be applied to the surface to impart activity to the upper package 11 and the housing 20.

When the smoothing layer 12 is completed, the mounting step S21 for mounting the housing 20 on the top of the smoothing layer 12 is performed. In this case, the sealing plate 50 is coupled to the upper opening of the housing 20 to form the housing. By sealing 20, foreign matters can be prevented from flowing into the housing 20 during the subsequent placing of the package 11 and the surface planarization operation.

The sealing plate 50 coupled to the housing 20 is manufactured to have a shape coinciding with the upper opening of the housing 20, as shown in FIG. 9, thereby completely sealing the housing 20 during the packaging 11 pouring operation. As shown in the figure, the bottom surface of the sealing plate 50 is formed by the close contact portion 51 that is firmly in close contact with the side wall of the housing 20 to double the sealing property.

When the mounting of the housing 20 is completed, the package 11 on both sides of the housing 20 is poured, and after the flattening, the package forming step S30 is cured, and curing of the package 11 is completed. When the sealing plate 50 is removed from the housing 20, the spring 22 and the elevating module 30 are combined with each other, and then the elevating module installation step S40 of fastening the stopper 24 to the top of the housing 20 is performed. The installation of the generator of the present invention is completed.

On the other hand, Figures 10 to 15 is an embodiment in which a joint function is provided to the power generation device of the present invention so that the load transmission between the housing 11, both sides of the package 11, it will be described in detail as follows.

First, Figure 10 is a longitudinal cross-sectional view of the joint embodiment of the present invention, as can be seen through the figure, dowel bar (dowel) on both side walls of the housing 20 having a height corresponding to the thickness of the package 11 -bar (21) is protruded horizontally and embedded in the package (11).

The dowel bar 21 is a kind of steel round bar, and a lubricant such as a bitumen material or a releasing agent is applied to the outer circumferential surface of at least one of the dowel bars 21 of the dowel bars 21 on both sides of the housing 20 before application. By encapsulating the end of the cap 28 forming the active space at the end, the package 11 of at least one of the unit packages 11 on both sides of the housing 20 is formed in the microscopic direction of the dowel bar 21. It is possible to move by microscopic movement, thereby enabling the contraction and expansion deformation of the unit package 11 on both sides of the housing 20 and at the same time between the package 11 and the housing 20 through the dowel bar 21 and the adjacent package. The load transfer between sieves 11 also has a structure possible.

11 illustrates a joint embodiment of the present invention, that is, a state in which the dowel bar 21 forming housing 20 and the elevating module 30 are installed on a road. It can be seen that it is installed, and can be installed by combining a plurality of generators depending on the width of the road or the number of planned lanes.

12 is a partially cutaway perspective view illustrating a coupling state of the housing 20 and the elevating module 30 of the joint embodiment, and as can be seen from the same drawing, between the elevating module 30 and the housing 20. A plurality of springs 22 are installed, the spring 22 is installed on the axis of the protrusion pipe 23 of the housing 20 and the protrusion bar 33 of the elevating module 30, the stable lifting of the elevating module 30 It allows the movement and the elastic force of the multiple springs 22 to be evenly distributed.

In addition, in the case of the joint type embodiment, in order to secure an effective width for performing the joint function, since the width of the power generation device including the lifting module 30 is relatively large, as in the enlarged part of the ellipse of FIG. Hook 38 is formed on the upper end of the module 30, the housing 31, so that the lifting module 30 can be easily separated from the housing 20 during maintenance work.

13 is an exploded perspective view of the elevating module 30 of the joint embodiment of the present invention. A plurality of cantilever-type piezoelectric plates 40 are horizontally arranged on the bottom plate 32 coupled to the housing 31. As described above, the center of gravity is not biased by alternately providing the positions of the fixed and free ends of the adjacent cantilevered piezoelectric plate 40 to be opposite to each other.

If the entire piezoelectric plate 40 is installed in one direction, that is, when both the fixed end and the free end of the cantilevered piezoelectric plate 40 are configured in the same direction, the center of gravity of the elevating module 30 is the piezoelectric plate 40. It must be biased toward the fixed end of), such that the center of gravity of the center of gravity hinders the horizontal maintenance of the elevating module 30 and the smooth lifting movement, which in turn lowers the vibration and power generation efficiency of the piezoelectric plate 40.

FIG. 14 illustrates a process of installing the joint embodiment of the present invention. As can be seen from the drawing and FIG. 8, in the joint embodiment, the smoothing layer 12 is replaced with the above-described mounting step (S21). The housing 20 is mounted on the upper portion of the dowel bar 21 to perform a coating step (S22) of applying the lubricant to the mounting.

That is, when the smoothing layer 12 is completed, a coating step (S22) for mounting the housing 20 on which the lubricant is applied is performed on the top of the smoothing layer 12. The dowel bar formed on both sides of the housing 20 A lubricant such as a bitumen material or a release agent is applied to at least one of the dowel bars 21 to allow the housing 20 to have a role as a joint for ensuring the activity of the package 11 and transmitting a load. The upper opening of the housing 20 couples the sealing plate 50 to seal the housing 20, thereby preventing foreign substances from entering into the housing 20 during subsequent placing of the package 11 and planarization. Done.

At this time, it is preferable to form an active space by coupling the cap 28 to the tip of the dowel bar 21 to which the lubricant is applied.

15 is a state in which the joint embodiment of the present invention installed through the above-described process imparts activity to the package 11 according to the shrinkage and expansion deformation of the package 11 and transmits a load through the dowel bar 21. As can be seen from the figure, by performing the joint function of the road pavement 11 in addition to the power generation function at the same time, to prevent the destruction of the surrounding pavement 11, the durability of the entire power generation device and the road It can be seen that.

In addition, through the solid and smooth smooth layer 12 formed in the lower portion of the housing 20 to prevent the phenomenon of concentrated load on the subgrade 13 directly under the power generator, the end of the unit package body 11 around the power generator Shear failure can also be prevented.

11: package
12: smooth layer
13: roadbed
20: housing
21: dowel-bar
22: spring
23: protruding pipe
24: stopper
28: cap
30: lifting module
31: enclosure
32: base plate
33: protrusion bar
38: hook
40: piezoelectric plate
41: weight
50: sealing plate
51: close contact
S11: Compaction step
S12: Foundation Formation Step
S21: mounting stage
S22: coating step
S30: package forming step
S40: lifting module installation step

Claims (5)

In the piezoelectric power generation apparatus which is embedded in the road pavement 11, the cantilever type piezoelectric plate 40 provided with a weight 41 at the front end is provided.
Inside the rectangular housing 20, the upper portion of which is opened, the lifting module 30, which is a hermetically sealed enclosure in which the cantilever-type piezoelectric plate 40, in which the weight 41 is installed, is incorporated, is coupled to the lifting module ( The upper surface of the 30 is exposed to the package 11, the spring 22 is installed between the elevating module 30 and the inner bottom of the housing 20, the upper elastic force acts on the elevating module 30, A stopper 24 is formed at the upper end of the housing 20 to suppress the detachment of the housing 20 of the elevating module 30;
When the wheel load acts on the upper surface of the elevating module 30, the elevating module 30 descends, and when the wheel load is released, the elevating module 30 is lifted up and restored by the elastic force of the spring 22. Piezoelectric power generation device for the road, characterized in that the electric current is generated by vibrating the piezoelectric plate 40 inside the module 30.
The dowel-bar 21 which is horizontally embedded in the pavement 11 is formed on both sidewalls of the housing 20, and protrudes from both sidewalls of the housing 20. At least one dowel bar (21) of the well bar (21) for the road piezoelectric generator characterized in that the lubricant is applied.
The method according to claim 1 or 2, inside the lifting module 30, a plurality of cantilever (cantilever) -type piezoelectric plate 40, which is installed at the tip of the weight (41) is installed horizontally arranged, adjacent cantilever-type piezoelectric plate (40) Piezoelectric generator for road, characterized in that alternately installed so that the position of the fixed end and the free end of the opposite).
In the installation method of the piezoelectric power generation device for a road of claim 1,
A compaction step (S11) of further compacting the roadbed 13 of the generator installation point to form a recess;
After placing the high-density filler in the recessed part of the roadbed 13 formed in the compacting step S11 to form a smooth layer 12, the smooth layer 12 so that the elevation of the top surface of the smooth layer 12 and the elevation of the surrounding roadbed 13 coincide. A base forming step (S12) to planarize ();
Mounting the housing 20 on top of the smooth layer 12, the mounting step (S21) for sealing the housing 20 by coupling the sealing plate 50 to the upper opening of the housing 20;
A package forming step (S30) of pouring the package 11 on both sides of the housing 20, and then curing the package;
When curing of the package 11 is completed, the sealing plate 50 is removed from the housing 20, and then the spring 22 and the lifting module 30 are coupled to each other, and the lifter 24 fastens the stopper 24 to the upper end of the housing 20. Piezoelectric power generation method for a road, characterized in that the module installation step (S40).
In the installation method of the piezoelectric power generator for a road of claim 2,
A compaction step (S11) of further compacting the roadbed 13 of the generator installation point to form a recess;
After placing the high-density filler in the recessed part of the roadbed 13 formed in the compacting step S11 to form a smooth layer 12, the smooth layer 12 so that the elevation of the top surface of the smooth layer 12 and the elevation of the surrounding roadbed 13 coincide. A base forming step (S12) to planarize ();
The housing 20 is mounted on the top of the smooth layer 12, and at least one of the dowel bars 21 formed on both sides of the housing 20 is coated with a lubricant, and an upper end of the housing 20 is provided. A coating step (S22) for sealing the housing 20 by coupling the sealing plate 50 to the opening;
A package forming step (S30) of pouring the package 11 on both sides of the housing 20, and then curing the package;
When curing of the package 11 is completed, the sealing plate 50 is removed from the housing 20, and then the spring 22 and the lifting module 30 are coupled to each other, and the lifter 24 fastens the stopper 24 to the upper end of the housing 20. Piezoelectric power generation method for a road, characterized in that the module installation step (S40).

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