KR101029297B1 - Foot mat type unit for piezoelectric generator and generator system including the same - Google Patents

Foot mat type unit for piezoelectric generator and generator system including the same Download PDF

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Publication number
KR101029297B1
KR101029297B1 KR1020090072135A KR20090072135A KR101029297B1 KR 101029297 B1 KR101029297 B1 KR 101029297B1 KR 1020090072135 A KR1020090072135 A KR 1020090072135A KR 20090072135 A KR20090072135 A KR 20090072135A KR 101029297 B1 KR101029297 B1 KR 101029297B1
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South Korea
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piezoelectric
unit
electrode
substrate
generator
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KR1020090072135A
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Korean (ko)
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KR20110014461A (en
Inventor
김창일
박신서
백종후
이영진
정영훈
한우석
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(주) 센불
한국세라믹기술원
한우석
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezo-electric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezo-electric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators

Abstract

The present invention relates to a scaffold-type piezoelectric generator unit and a piezoelectric generator system including the same, wherein a piezoelectric layer is formed on at least one surface of an elastic substrate and a cushioning layer is formed on both sides of the elastic substrate; At least one piezoelectric generator unit including an electrode substrate on which at least one unit piezoelectric unit is disposed, an insulating substrate supporting the electrode substrate, and an AC power source generated by deformation of the piezoelectric layer of the piezoelectric generator unit. The present invention relates to a piezoelectric generator system including at least one rectifying circuit unit for converting to a power source and an elastic mat unit covering the piezoelectric generator unit.

Description

FOOT MAT TYPE UNIT FOR PIEZOELECTRIC GENERATOR AND GENERATOR SYSTEM INCLUDING THE SAME

The present invention relates to a scaffold-type piezoelectric generator unit and a piezoelectric generator system including the same. A piezoelectric power generation unit that generates electricity while the piezoelectric layer is bent by the pressure applied to the piezoelectric layer is manufactured, and a generator system combining the same. The present invention relates to a technology that can be easily used in electronic components, including various switches used in real life.

Piezoelectric materials have various applications as conversion media for converting mechanical energy into electrical energy. At present, a large number of ceramic materials including inorganic and organic materials are known as materials causing piezoelectric phenomenon.

A piezoelectric body generates a voltage by a force (pressure or vibration) applied to the piezoelectric body, and a device using a voltage generated according to the magnitude of the applied force is called a piezoelectric generator.

In manufacturing a piezoelectric generator using such a piezoelectric material, it is important to effectively transmit external shock or vibration to the piezoelectric body without loss.

In addition, since the excessive shock may be transmitted to the piezoelectric body and the piezoelectric body may be broken, a structure capable of preventing external mechanical energy from being damaged by the impact while effectively transferring the external mechanical energy to the piezoelectric body is required.

In particular, in the case of a ceramic piezoelectric body, brittleness is strong, and thus a housing capable of effectively transmitting mechanical energy and preventing breakage of the piezoelectric body from excessive external force is required.

On the other hand, in order to convert the mechanical energy transmitted from the outside into electrical energy by the piezoelectric material, it must be electrically connected to an external circuit through an electrode attached to or connected to the piezoelectric body.

However, when continuous vibration and shock are transmitted to the piezoelectric material used in the piezoelectric generator, the electrical connection between the piezoelectric body and the electrode may be broken. Therefore, a piezoelectric generator unit or a system that can maintain an electrical connection to a piezoelectric body despite such vibrations and shocks should be developed, but there are no remarkable achievements yet.

SUMMARY OF THE INVENTION The present invention has been made in view of the above necessity. In constructing a piezoelectric generator system for converting mechanical energy into electrical energy, a piezoelectric layer may be provided on the front and rear surfaces of a substrate having elastic force, and the piezoelectric layer may be protected. By forming a cushion layer to form a unit piezoelectric part, by using one or more unit piezoelectric parts to improve the power generation efficiency by using a substrate and a mat-shaped member that can protect the substrate, the external vibration and shock is piezoelectric It is an object of the present invention to provide a piezoelectric generator unit having a structure in which the piezoelectric body is prevented from being damaged due to excessive impact while being effectively transmitted, and the electrical connection between the external circuit and the piezoelectric body can be maintained.

In addition, the present invention is to provide a piezoelectric generator system that can be conveniently used in real life by manufacturing the piezoelectric generator unit in the form of scaffolding.

In the piezoelectric generator system according to an embodiment of the present invention, a piezoelectric layer is formed on at least one surface of an elastic substrate, and a unit piezoelectric unit having a cushion layer formed on both sides of the elastic substrate, and at least one unit piezoelectric unit is disposed. At least one piezoelectric generator unit including an electrode substrate, an insulating substrate supporting the electrode substrate, and at least one rectification for converting AC power generated by the piezoelectric layer deformation of the piezoelectric generator unit into a DC power source. And an elastic mat portion covering the circuit portion and the piezoelectric generator unit.

The piezoelectric generator unit may further include a first electrode connected to the piezoelectric layer and a second electrode connected to the elastic substrate, wherein a first electrode adjacent to the first electrode is connected by a wire pattern, And a second electrode adjacent to the second electrode, wherein the elastic substrate is formed of a metal or a conductive plastic material, and is bent by a pressure or vibration applied to the unit piezoelectric part to deform the piezoelectric layer. And restoring the piezoelectric layer to its original form when the pressure or vibration is released.The piezoelectric layer may include Pb (Zr, Ti) O 3 + Pb (Zn, Nb) O 3 , Pb (Zr, Ti ) O 3 + Pb (Ni, Nb) O 3 , Pb (Zr, Ti) O 3 + PVDF polymer, Pb (Zr, Ti) O 3 + silicon polymer and Pb (Zr, Ti) O 3 + epoxy polymer The piezoelectric layer may include (Na, K) NbO 3 or (Na, K, Li) Nb. It characterized in that it comprises O 3 series lead-free ceramics, the electrode substrate comprises a copper plate, the insulating substrate is characterized in that it comprises a PVC (Polyvinyl Chloride) or a wooden board, the piezoelectric generator system Is characterized in that it further comprises a power storage unit connected to the rectifier circuit unit, the piezoelectric generator system is connected to the switches or sensors for starting the electronic products, the switches are one of the light switch, automatic door switch and chime bell switch Including the above, the sensor is characterized in that it comprises an escalator motion sensor or a moving walk motion sensor.

In addition, the piezoelectric generator unit according to an embodiment of the present invention is an elastic substrate having a piezoelectric layer formed on at least one surface, a first cushion layer formed on the upper portion of the elastic substrate and a second formed on the lower portion of the elastic substrate. And a unit piezoelectric unit including a cushion layer, an electrode substrate on which at least one unit piezoelectric unit is disposed, and an insulating substrate supporting a lower portion of the electrode substrate.

The present invention improves the structure of the piezoelectric generator unit, while effectively transmitting external vibration and shock to the piezoelectric body while preventing excessive shock from being transmitted to the piezoelectric body, thereby preventing the piezoelectric body from being damaged, and at the same time maintaining electrical connection of the rectifier circuit unit. To improve the durability of the piezoelectric generator system, and to improve the power generation efficiency.

In addition, the piezoelectric generator system according to the present invention has a relatively simple internal structure and is easy to manufacture, and can be freely adjusted in size according to the situation, and its application range is wide.

In addition, the piezoelectric generator system according to the present invention can be simply installed in the form of laying the mat can be utilized in a variety of fields associated with various switches, and provides an effect of reducing the installation cost and electricity bill.

The piezoelectric generator unit according to the present invention includes an elastic substrate having characteristics that are bent by pressure or vibration applied to a surface and restoring force against the bending, a piezoelectric layer formed on each of the first or second surfaces of the elastic substrate; And a cushion layer for protecting the piezoelectric layer and the elastic substrate, an electrode substrate capable of coupling a plurality of sandwich unit piezoelectric parts including the cushion layer, and an insulating substrate capable of supporting the electrode substrate. .

Next, the piezoelectric generator unit is provided in a form in which one or a plurality is assembled between two elastic mats, and is installed at a portion where a scaffold is required.

It can then be connected to an electrical installation around the scaffold, acting as a switch to drive the electrical installation, or a power generation system that can act as a direct power source for driving the electrical installation.

Hereinafter, the piezoelectric generator unit and the piezoelectric generator system including the same according to the present invention will be described in detail with reference to the drawings and embodiments.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims.

1 is an exploded cross-sectional view showing a piezoelectric generator unit according to an embodiment of the present invention.

Referring to FIG. 1, the piezoelectric generator unit 200 according to the present invention includes a unit piezoelectric unit 160, an electrode substrate 110, and an insulating substrate 100. In this case, the unit piezoelectric unit 160 may include an elastic substrate 130, a piezoelectric layer 140, and cushion layers 120 and 150.

Here, the unit piezoelectric unit 160 will be described first as follows.

As illustrated in FIG. 1, the unit piezoelectric unit 160 includes piezoelectric layers 140 on both surfaces of the elastic substrate 130. At this time, the piezoelectric layer 140 may be provided on both sides of the elastic substrate 130, or may be provided only on one side of both sides. It is an embodiment of the normal state is provided only on one side, it may be provided on both sides when high efficiency is required.

Here, the elastic substrate 130 is made of a metal or a conductive plastic material, and bent by the pressure or vibration applied to the elastic substrate 130 to apply a deformation to the piezoelectric layer 140 to generate a voltage, the pressure When the vibration is released or restored to its original form, it is provided to maintain a normal state.

Therefore, the elastic substrate 130 is preferably formed of a substrate having good conductivity and good elasticity, but preferably provided with a thin copper plate. In addition, the planar shape of the elastic substrate 130 may be a polygon, such as a triangle, a quadrangle, but preferably provided in a circular shape.

In addition, the piezoelectric layer 140 includes Pb (Zr, Ti) O 3 + Pb (Zn, Nb) O 3 , Pb (Zr, Ti) O 3 + Pb (Ni, Nb) O 3 , Pb (Zr, Ti) O 3 It can be provided using a ceramic material consisting of one or more of + PDFDF polymer, Pb (Zr, Ti) O 3 + silicon polymer, Pb (Zr, Ti) O 3 + epoxy polymer and lead-free piezoelectric ceramics, (Na, K) The material may include NbO 3 -based or (Na, K, Li) NbO 3 -based lead-free ceramics, and any material having excellent piezoelectric function may be used. In this case, the elastic substrate 130 also serves as an electrode for collecting power generated in the piezoelectric layer 140 in addition to the function of maintaining the shape of the piezoelectric layer 140, the piezoelectric layer 140 for the connection of the electrode and the electrode. The planar shape of the elastic substrate 130 is preferably provided to be included in the form included in the plane.

Next, to protect the elastic substrate 130 and the piezoelectric layer 140, the first cushion layer 150 is formed on the upper portion of the elastic substrate 130, the second cushion layer below the elastic substrate 130. 120 is formed. At this time, it is preferable that the cushion layer is provided with a urethane type sponge layer formed of a rubber or synthetic resin formed of natural rubber.

Here, in order to completely protect the piezoelectric layer 140, the first cushion layer 150 and the second cushion layer 120 are formed in the same form as the elastic substrate 130 to completely cover the piezoelectric layer 140. It is desirable to be in the form possible. That is, it is preferable to make a cross section into a sandwich form, and to make a three-dimensional cylinder form.

However, in this case, since the connection of the electrodes to be described in a subsequent process may be inconvenient, as shown in FIG. 1, the lower second cushion layer 120 is formed to have the same shape as the elastic substrate 130. In addition, the first cushion layer 150 on the piezoelectric layer 140 may be formed to have a predetermined size smaller than that of the piezoelectric layer 140. In this case, the planar shape of the first cushion layer 150 should be smaller than that of the piezoelectric layer 140 because an electrode should be connected to the piezoelectric layer 140.

As such, when the upper size has a smaller cushion layer shape, the cross section becomes a triangular shape, and the three-dimensional shape is preferably formed in a cone shape. And, in the present embodiment has been described mainly the shape of the horn having a circular plane, it is possible to use all of the pyramid-shaped surface that can be usefully used depending on the situation, such as square pyramid, pentagonal pyramid.

As described above, the element formed up to the first and second cushion layers 150 and 120 such that the cylindrical shape or the conical shape is completed as described above is called the unit piezoelectric part 160.

In addition, although the respective components of the unit piezoelectric unit 160 are separated from each other, the components are actually provided in a combined state.

In addition, in the present invention, a plurality of unit piezoelectric units 160 may be used to further improve power generation efficiency, and as illustrated in FIG. 1, the unit piezoelectric units 160 may be arranged in a two-row structure, for a piezoelectric generator. It is preferable to form the unit unit 200.

In this case, in order to support the piezoelectric generator unit unit 200, an insulating substrate 100 made of a material including a PVC or a wood plate material is formed under the unit piezoelectric unit 160. In this case, the insulating substrate 100 may be formed by combining the two kinds of substrates, or may be combined with a metal substrate for strength reinforcement.

Next, the electrode substrate 110 is provided between the insulating substrate 100 and the unit piezoelectric unit 160 so that the unit piezoelectric units 160 placed in plural can be easily connected in parallel.

The electrode substrate 110 may be connected to an electrode connected to the piezoelectric layer 140, or may be connected to an electrode connected to the elastic substrate 130. However, for parallel connection of the unit piezoelectric unit 160, it should be connected to only one material consistently.

As described above, the piezoelectric generator unit 200 according to the present invention may be formed. Hereinafter, the perspective view of the piezoelectric generator unit according to an embodiment of the present invention will be described in order to find out a specific form thereof. Shall be.

2 is a perspective view showing a piezoelectric generator unit according to the present invention.

Referring to FIG. 2, an electrode substrate 310 is formed on an insulating substrate 300 having a rectangular shape and a piezoelectric layer 340 is formed on the piezoelectric generator unit 400 according to the present invention. The piezoelectric part 360 is disposed. In this case, the piezoelectric layer 340 may be formed only on the upper portion of the elastic substrate 330 and may be formed on both sides thereof. The piezoelectric layer 340 formed on the lower surface of the elastic substrate 330 may be the second cushion layer 320. ), The elastic substrate 330 and the second cushion layer 320 are provided to be connected to each other.

In addition, the first cushion layer 350 has a smaller size than the piezoelectric layer 340 in consideration of electrode connection.

In addition, the rectangular insulating board 300 is preferably provided to have a size that can be used as a foot support, the unit piezoelectric unit is provided in a circular size of the size that can be arranged in two rows on the electrode substrate 310. It is desirable to.

In addition, the unit piezoelectric unit may be used in three rows or four rows depending on the situation, it is preferable to adjust the number in consideration of the power efficiency of the place to be used.

In addition, the unit piezoelectric units 360 paired with each other between the columns may be arranged in parallel, or may be arranged in a zigzag form in order to obtain maximum efficiency in consideration of the available area.

Next, the piezoelectric layer 340 and the piezoelectric layer 340 are connected in parallel to form a first electrode 370, the elastic substrate 330 and the electrode substrate 310 is connected to the second electrode 380. To form. In this case, the first electrode 370 is connected to the first electrode by the wire pattern as shown in Figure 2, the second electrode 380 is connected to the second electrode by the wire pattern. In addition, the piezoelectric layer 340 and the electrode substrate 310 may be connected to each other in the opposite shape, and the elastic substrate 330 and the elastic substrate 330 may be connected to each other.

3 is a plan view schematically showing a piezoelectric generator system according to an embodiment of the present invention.

Figure 3 illustrates a stepped piezoelectric generator system in one embodiment according to the present invention, using the piezoelectric generator unit 400 described in Figure 2, the footrest to be generated by the stepping on the weight of the person It shows a system manufactured in the form.

After placing two sets of piezoelectric generator units 400 to the width of the shoulder of a common person, the rectifier circuit unit 410 is connected to each piezoelectric generator unit 400.

When the electrodes are connected as shown in FIG. 2, the voltage output from the piezoelectric generator unit 400 becomes an AC voltage, and thus, a rectifying circuit unit 410 is required to convert the DC voltage.

In addition, it is preferable that the rectifier circuit unit 410 also serves to store the converted voltage. At this time, the rectifier circuit unit 410 may be provided integrally with the piezoelectric generator unit 400, but because of the high risk of damage when a continuous pressure is applied to the scaffold, it is spaced apart from the piezoelectric generator unit 400 It is desirable to be provided.

Next, an elastic mat 420 is formed to cover the upper and lower portions of the piezoelectric generator unit 400 and the rectifier circuit unit 410. In this case, the elastic mat 420 is preferably made of a material capable of efficiently applying pressure to the piezoelectric generator unit 400 while protecting the entire piezoelectric generator unit 400 and the rectifier circuit unit 410. As a representative embodiment, rubber may be used, and the upper part of the rubber may be coated with a cloth in the form of a fabric to prevent slippage, and the interior effect may be emphasized.

Next, the rectifier circuit unit 410 is connected to the required electronic component 450.

Here, the electronic component 450 may be connected to all of at least one of a light switch, an automatic door switch, a chime bell switch, an escalator motion sensor, and a moving walk motion sensor at the entrance where the footrest is used, in consideration of the shape of the footrest. In this case, in consideration of the magnitude of the voltage generated in the piezoelectric generator unit 400, the example is mainly used for switches or sensors, the piezoelectric generator system according to the invention according to the number of the piezoelectric generator unit 400 Since the voltage can be increased freely, it can be directly connected to a light or automatic door.

In addition, the piezoelectric generator system installed in a portion having a large amount of entrance and exit may further include a power storage unit, which may be used for various types of electronic components. Particularly, in the case of a large amount of entrance and exit, the use of LED lamps with relatively low power consumption in the case of lights can maximize the effect of the piezoelectric generator system.

4 is a cross-sectional view showing a piezoelectric generator system according to an embodiment of the present invention.

Referring to FIG. 4, first and second elastic mats 420 are formed on the upper and upper portions of the piezoelectric generator unit 400 shown in FIG. 2, and on the lower portions of the piezoelectric generator units 400, the second elastic mats 430. ) Is provided.

In this case, the second elastic mat 430 does not necessarily need to be made of a rubber material as described above, and PVC or a wooden board may be used, such as an insulating board of the piezoelectric generator unit 400.

In addition, the second elastic mat 430 may be provided in a form that can be embedded in the ground, in this case, the second elastic mat 430 may be provided in a form further comprising a protrusion for fixing to the lower portion.

In addition, the inside of the second elastic mat 430 may be provided in a form further comprising a groove for fixing the piezoelectric generator unit 400 well. In addition, the outer periphery of the second elastic mat 430 is provided in a form further comprising a protrusion that can block the separation interval with the first elastic mat 420, foreign matter does not enter the piezoelectric generator unit 400. You can do that.

As described above, the piezoelectric generator unit and the piezoelectric generator system using the same effectively transmit external vibrations and shocks to the piezoelectric layer, and at the same time, maintain electrical connection of the rectifier circuit part, thereby maintaining durability of the piezoelectric generator system. Can improve. In addition, the power generation efficiency can be freely improved depending on the area of the insulating substrate used for the piezoelectric generator unit and the number of uses.

In addition, since the structure is relatively simple, it can be manufactured in various sizes and can be utilized in various fields. In particular, when the piezoelectric generator system according to the present invention is installed in an area with a lot of people coming and going, it is possible to build a system for supplying electric power to switches used for electric lights, automatic doors, escalators and moving walks. In addition, by providing a power storage unit, if the voltage is sufficiently stored can be used as a power that can directly operate the electronic components.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments and can be modified in various forms, and having ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1 is an exploded cross-sectional view showing a piezoelectric generator unit according to an embodiment of the present invention.

Figure 2 is a perspective view of a piezoelectric generator unit according to the present invention.

Figure 3 is a plan view schematically showing a piezoelectric generator system according to an embodiment of the present invention.

Figure 4 is a cross-sectional view showing a piezoelectric generator system according to an embodiment of the present invention.

Claims (10)

  1. A piezoelectric layer is formed on at least one surface of the elastic substrate, and a unit piezoelectric part having a cushion layer formed on both sides of the elastic substrate, an electrode substrate on which at least one unit piezoelectric part is disposed, and an insulating substrate supporting the electrode substrate. At least one piezoelectric generator unit comprising a;
    At least one rectifier circuit unit for converting AC power generated by the piezoelectric layer deformation of the piezoelectric generator unit into DC power; And
    Piezoelectric generator system comprising; an elastic mat portion covering the piezoelectric generator unit.
  2. The method of claim 1,
    The piezoelectric generator unit further includes a first electrode connected to the piezoelectric layer and a second electrode connected to the elastic substrate, wherein a first electrode adjacent to the first electrode is connected by a wire pattern, and the second electrode is connected to the second electrode. A piezoelectric generator system, characterized in that the electrode and the adjacent second electrode is connected.
  3. The method of claim 1,
    The elastic substrate is formed of a metal or a conductive plastic material, and is bent by the pressure or vibration applied to the unit piezoelectric part to deform the shape of the piezoelectric layer, and when the pressure or vibration is released, the piezoelectric layer returns to its original shape. Piezoelectric generator system, characterized in that to be restored.
  4. The method of claim 1,
    The piezoelectric layer may include Pb (Zr, Ti) O 3 + Pb (Zn, Nb) O 3 , Pb (Zr, Ti) O 3 + Pb (Ni, Nb) O 3 , Pb (Zr, Ti) O 3 + PDFDF polymer, Pb (Zr, Ti) O 3 + silicone polymer and Pb (Zr, Ti) O 3 + a piezoelectric generator system comprises one or more of epoxy polymers.
  5. The method of claim 1,
    The piezoelectric layer includes a (Na, K) NbO 3 -based or (Na, K, Li) NbO 3 -based lead-free ceramics.
  6. The method of claim 1,
    The electrode substrate is a piezoelectric generator system, characterized in that it comprises a copper plate.
  7. The method of claim 1,
    The insulating substrate is a piezoelectric generator system characterized in that it comprises a PVC (Polyvinyl Chloride) or a wooden board.
  8. The method of claim 1,
    The piezoelectric generator system further includes a power storage unit connected to the rectifier circuit unit.
  9. The method of claim 1,
    The piezoelectric generator system is connected to a switch or a sensor for starting the electronics, the switch includes at least one of a light switch, an automatic door switch and a chime bell switch, the sensor is an escalator motion sensor or a moving walk motion sensor Piezoelectric generator system comprising a.
  10. A unit piezoelectric unit including an elastic substrate having a piezoelectric layer formed on at least one surface thereof, a first cushion layer formed on the elastic substrate, and a second cushion layer formed on the lower portion of the elastic substrate;
    An electrode substrate on which at least one unit piezoelectric part is disposed; And
    Piezoelectric generator unit comprising a; insulating substrate for supporting the lower portion of the electrode substrate.
KR1020090072135A 2009-08-05 2009-08-05 Foot mat type unit for piezoelectric generator and generator system including the same KR101029297B1 (en)

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KR1020090072135A KR101029297B1 (en) 2009-08-05 2009-08-05 Foot mat type unit for piezoelectric generator and generator system including the same
PCT/KR2009/004406 WO2011016592A1 (en) 2009-08-05 2009-08-06 Foothold-type piezoelectric generator unit and piezoelectric generator system including same

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Cited By (6)

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KR101350271B1 (en) * 2012-05-15 2014-01-13 정병직 Lighting system for decorations using piezoelectric
KR101417799B1 (en) * 2013-05-23 2014-07-14 김지현 Piezo-electric foothold
KR101432167B1 (en) 2013-04-29 2014-08-20 한국세라믹기술원 Self generating wireless switch using piezoelectric device
CN104333262A (en) * 2014-11-26 2015-02-04 扬州大学 Foot-operated piezoelectric generating set
KR20160134068A (en) 2015-05-14 2016-11-23 울산과학기술원 Three-dinensional polygon nanogenerator with built-in polymer-spheres and their fabication
US10851807B1 (en) 2019-12-19 2020-12-01 King Abdulaziz University Energy generating system using floor tiles and fluid/gas movement

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KR101218272B1 (en) * 2010-04-01 2013-01-04 가천대학교 산학협력단 generating apparatus with piezoeletric element
KR102085451B1 (en) * 2018-10-22 2020-03-05 김지은 Energy Independent Faucet Comprising Automatic Valve

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JP2001339963A (en) 2000-05-26 2001-12-07 Tokin Ceramics Corp Piezoelectric generator and piezoelectric light emitting device using it
JP2004096980A (en) 2002-08-30 2004-03-25 Yoshihisa Osawa Portable walking generator
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JP2001339963A (en) 2000-05-26 2001-12-07 Tokin Ceramics Corp Piezoelectric generator and piezoelectric light emitting device using it
JP2004096980A (en) 2002-08-30 2004-03-25 Yoshihisa Osawa Portable walking generator
KR100883076B1 (en) 2008-07-07 2009-02-17 한국유지관리 주식회사 Elasticity support of bridge for self generating

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101350271B1 (en) * 2012-05-15 2014-01-13 정병직 Lighting system for decorations using piezoelectric
KR101432167B1 (en) 2013-04-29 2014-08-20 한국세라믹기술원 Self generating wireless switch using piezoelectric device
KR101417799B1 (en) * 2013-05-23 2014-07-14 김지현 Piezo-electric foothold
CN104333262A (en) * 2014-11-26 2015-02-04 扬州大学 Foot-operated piezoelectric generating set
KR20160134068A (en) 2015-05-14 2016-11-23 울산과학기술원 Three-dinensional polygon nanogenerator with built-in polymer-spheres and their fabication
US10851807B1 (en) 2019-12-19 2020-12-01 King Abdulaziz University Energy generating system using floor tiles and fluid/gas movement

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KR20110014461A (en) 2011-02-11

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