KR20150046815A - Energy harvesting wireless control system using piezoelectric harvesting and wireless control method using the same - Google Patents

Energy harvesting wireless control system using piezoelectric harvesting and wireless control method using the same Download PDF

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Publication number
KR20150046815A
KR20150046815A KR1020130126084A KR20130126084A KR20150046815A KR 20150046815 A KR20150046815 A KR 20150046815A KR 1020130126084 A KR1020130126084 A KR 1020130126084A KR 20130126084 A KR20130126084 A KR 20130126084A KR 20150046815 A KR20150046815 A KR 20150046815A
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KR
South Korea
Prior art keywords
piezoelectric
piezoelectric module
unit
module
control system
Prior art date
Application number
KR1020130126084A
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Korean (ko)
Inventor
한지광
함유진
이시훈
김상재
임재윤
목영선
Original Assignee
(주)진우소프트이노베이션
제주대학교 산학협력단
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Priority to KR1020130126084A priority Critical patent/KR20150046815A/en
Priority to PCT/KR2014/002578 priority patent/WO2015060505A1/en
Publication of KR20150046815A publication Critical patent/KR20150046815A/en

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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
    • H02N2/181—Circuits; Control arrangements or methods
    • 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

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  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

The present invention relates to a radio control system using a piezoelectric module, and more particularly, to a radio control system using electric energy generated by a vibration of a piezoelectric module and a radio control method using the same.
According to the present invention, A piezoelectric module accommodated in the housing and generating electric energy by using vibration energy generated according to vibration or movement of the housing; A transmitter connected to the piezoelectric module to generate an electrical signal using the piezoelectric module; A receiver for receiving an electrical signal generated from the transmitter; And a power supply unit connected to the receiving unit, and a wireless control method using the energy harvesting wireless control system using the piezoelectric module.

Description

TECHNICAL FIELD [0001] The present invention relates to an energy harvesting wireless control system using a piezoelectric module, and a wireless control method using the same. [0002]

The present invention relates to a radio control system using a piezoelectric module, and more particularly, to a radio control system using electric energy generated by a vibration of a piezoelectric module and a radio control method using the same.

Energy harvesting technology uses piezoelectric elements to obtain electrical energy from surrounding vibrations and impacts.

Here, the energy harvesting technique using a piezoelectric element converts energy, such as abandoned force, pressure, and vibration, into electrical energy by utilizing the effect of generating electrical energy when mechanical deformation is applied to the piezoelectric element It says.

Energy harvesting technology using piezoelectric elements is not only easy to convert small vibration to electric energy but also has high energy conversion efficiency than other power generation methods.

A technology related to the present invention is Korean Patent Laid-Open Publication No. 10-2010-0074034 (published on 07.01.2010), which discloses a portable electronic device and a control method.

An object of the present invention is to provide an energy harvesting radio control system using a piezoelectric module capable of controlling electric energy obtained by using vibration of a piezoelectric module through a radio transmitter and a receiver and a radio control method using the same.

According to an aspect of the present invention, there is provided an energy harvesting wireless control system using a piezoelectric module, the system including: a housing; A piezoelectric module accommodated in the housing and generating electric energy by using vibration energy generated according to vibration or movement of the housing; A transmitter connected to the piezoelectric module to generate an electrical signal using the piezoelectric module; A receiver for receiving an electrical signal generated from the transmitter; And a power supply unit connected to the receiving unit.

The transmitting unit may be a Zigbee, bluetooth or wireless LAN module.

The receiver may receive a radio signal generated by the transmitter.

The radio signal is preferably a radio frequency signal.

The energy harvesting wireless control system using the piezoelectric module according to an embodiment of the present invention includes a control unit electrically connected to the piezoelectric module and generating a constant current by rectifying electric energy generated through the piezoelectric module; And a charging unit electrically connected to the control unit and storing the constant current.

The transmission unit may be connected to the piezoelectric module through a first relay circuit, and the receiving unit may be connected to the power supply unit through a second relay circuit.

The receiving unit may operate the second relay circuit to make the power supply unit operable when receiving the radio signal.

The piezoelectric module includes: a support plate; A first piezoelectric plate and a second piezoelectric plate respectively attached to both sides of the support plate; And a piezoelectric weight which is coupled through the edges of opposite sides of the support plate.

The piezoelectric weights may be formed in one of a ring shape, a spring shape, and a screw shape.

The support plate may be formed of at least one of copper (Cu), aluminum (Al), silver (Ag), gold (Au), polyethylene terephthalate (PET), and stainless steel.

The first piezoelectric plate and the second piezoelectric plate is 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 polymers, Pb (Zr, Ti) O 3 + silicone polymer and Pb (Zr, Ti) O 3 + epoxy polymer, (Na, K) NbO 3 system, (Na, K, Li) NbO 3 based And a piezoelectric material.

The power supply unit may include at least one power supply unit disposed at a predetermined interval in the power supply unit.

According to another aspect of the present invention, there is provided a radio control method using a piezoelectric module, comprising: installing a piezoelectric module in a housing; The piezoelectric module generating electrical energy using vibration energy generated by vibration or movement of the housing; Generating an electrical signal by the transmitter using the piezoelectric module; Receiving an electrical signal generated by the transmitting unit; And a power supply unit connected to the receiving unit.

The control unit may further include a step of rectifying the electric energy generated through the piezoelectric module to generate a constant current after the step of generating the electric energy.

The step of generating the constant current may further include the step of storing the constant current by a charging unit electrically connected to the control unit.

The energy harvesting radio control system using the piezoelectric module and the radio control method using the piezoelectric module according to the present invention can control the electric energy obtained by using the vibration of the piezoelectric module through the radio transmitter and the receiver.

1 is a schematic diagram showing an example of an energy harvesting radio control system that can be applied to the present invention.
2 shows an example of a piezoelectric module that can be applied to the present invention.
3 shows another example of a piezoelectric module that can be applied to the present invention.
Fig. 4 shows another example of a piezoelectric module that can be applied to the present invention.
FIG. 5 is a flowchart illustrating a radio control method using energy harvesting according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Hereinafter, an energy harvesting wireless control system using a piezoelectric module according to a preferred embodiment of the present invention and a wireless control method using the same will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram showing an example of an energy harvesting radio control system that can be applied to the present invention.

1, an energy harvesting wireless control system using a piezoelectric module according to the present invention includes a housing 110, a piezoelectric module 120, a transmitter 140, a receiver 150, and a power supply 160 . The energy hubbing radio control system using the piezoelectric module according to the present invention may further include a controller 170 and a charger 180.

The housing 110 has a rectangular shape in the present embodiment, but it is not limited as long as the housing 110 can accommodate the piezoelectric module 120.

Inside the housing 110, the piezoelectric module 120 is accommodated. The piezoelectric module 120 can generate electric energy using the vibration energy generated by the vibration or movement of the housing 110. [

The piezoelectric module 120 converts the vibration energy generated according to the movement of the housing 110 into electric energy. That is, the vibration energy is applied to the piezoelectric module 120 by the vibration or movement of the housing 110, and the deformation and the restoration of the piezoelectric module 120 are repeated by the vibration energy, . A detailed description of the piezoelectric module 120 will be described later with reference to FIGS. 2 to 4. FIG.

The plurality of piezoelectric modules 120 may be disposed inside the housing 110.

The transmission unit 140 is connected to the piezoelectric module 120, and can generate an electrical signal using the piezoelectric module 120. The transmission unit 140 is connected to the piezoelectric module 120 through the first relay circuit 131. Here, the transmitter 140 may be a module of Zigbee, bluetooth or wireless LAN, for example.

The receiving unit 150 receives an electrical signal generated from the transmitting unit 140. [ The receiving unit 150 is connected to the power supply unit 160 through the second relay circuit 132. Here, the receiver 150 receives the wireless signal 170 generated by the transmitter 140, and the wireless signal 170 is a radio frequency (RF) signal. When receiving the wireless signal 170, the receiving unit 150 may operate the second relay circuit 132 to make the power supply unit 160 operable.

Here, the first relay circuit 131 and the second relay circuit 132, which are the relay circuits 130, are circuits using relays (relays) for controlling the apparatus and protecting the circuits. Relay refers to a device that controls the opening and closing of other electric circuits by identifying the presence or absence of electrical input or the type of the electrical input in response to a preset electrical quantity.

The power supply unit 160 is connected to the receiving unit 150 and may include at least one power supply connection unit 161, 162, and 163.

The controller 170 rectifies the electric energy generated by the piezoelectric module 120 to generate a constant current. For this, the controller 170 may include a rectifier circuit for generating a constant current and various driving circuits.

The charging unit 180 electrically connected to the controller 170 stores electric energy generated from the piezoelectric module 120 and stores the rectified electric energy. The charging unit 180 is connected to the transmitting unit 140 and supplies electrical energy required for the operation of the transmitting unit 140. On the electrical side, a controlling means such as a switch may be included between the charging unit 180 and the transmitting unit 140.

Fig. 2 shows an example of a piezoelectric device which can be applied to the present invention.

Referring to FIG. 2, the piezoelectric module 120 may include a support plate 121, a first piezoelectric plate 122, a second piezoelectric plate 123, and a piezoelectric weight 124.

The support plate 121 has a plate shape and is preferably made of a steel material for spring having elasticity like a spring. Examples of the material include copper (Cu), aluminum (Al), silver (Ag) (Au), and stainless steel (SUS).

The first piezoelectric plate 122 may be attached to the upper surface of the support plate 121 and the second piezoelectric plate 123 may be attached to the lower surface of the support plate 121. The first piezoelectric plate 122 and the second piezoelectric plate 123 may have a smaller area than the support plate 121 and are preferably arranged so as to overlap with each other.

Here, the such first piezoelectric plate 122 and the second piezoelectric plate (123) is Pb (Zr, Ti) O 3, 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 + silicone polymer, and Pb (Zr, Ti) O 3 + a selected one of an epoxy polymer And may be formed of one first piezoelectric material.

Alternatively, the first piezoelectric plate 122 and the second piezoelectric plate 123 may be formed of at least one second piezoelectric material among (Na, K) NbO 3 , (Na, K, Li) NbO 3 , BiFeO 3, and BaTiO 3 As shown in FIG.

The first piezoelectric plate 122 and the second piezoelectric plate 123 may be formed of a second piezoelectric material that is not a first piezoelectric material containing lead (Pb) Is preferably used.

The piezoelectric weight 124 has a function of maintaining the level of the support plate 121 and may be made of a metal material having elasticity.

At this time, the piezoelectric weights 124 may be formed in the form of a plurality of rings that are fixedly coupled to the support plate 121 through a plurality of opposite side edges of the support plate. When the piezoelectric weight 124 is formed into a ring shape, vibrations generated when a plurality of ring-shaped piezoelectric weights 124 collide with each other are transmitted to the plate-shaped support plate 121, Thereby maximizing the efficiency.

3 shows another example of a piezoelectric module that can be applied to the present invention.

The piezoelectric module 220 shown in Fig. 3 may include a support plate 121, a first piezoelectric plate 122, a second piezoelectric plate 123, and a piezoelectric weight 224.

In the case of the piezoelectric module 220 shown in Fig. 3, the other elements are the same as those shown in Fig. 2, but the piezoelectric gage 224 has a different structure.

The piezoelectric weights 224 shown in FIG. 3 may be screwed and fixedly coupled along the edges of opposite sides of the support plate 121.

When the piezoelectric weight 224 is formed in the form of a spring, the piezoelectric weight 224 collides with the support plate 121 due to the movement of the housing 110, thereby maximizing the energy conversion efficiency do.

Further, although not shown in the drawings, the piezoelectric weights may be formed in a form of hanging from the support plate in the form of a spring such as a coil or a leaf spring. When a piezoelectric weight is formed in the form of a spring, when a vibration is transmitted to the support plate due to the movement of the piezoelectric additional housing, a physical collision is caused to the spring-loaded piezoelectric additional support plate suspended from the support plate, And the energy conversion efficiency is maximized.

Fig. 4 shows another example of a piezoelectric module that can be applied to the present invention.

In the case of the piezoelectric module 320 shown in FIG. 4, the piezoelectric module 320 may be formed of a well-bendable material so as to be dried in a roll form. For this purpose, a soft material such as PET (polyethylene terephthalate) may be used for the supporting plate among the elements constituting the piezoelectric module 320. [ Among the elements constituting the piezoelectric module 320, the first piezoelectric material or the second piezoelectric material may be used as the piezoelectric plate.

In this way, when the piezoelectric module 320 is formed of a well-bendable material, the piezoelectric module 320 can be rolled into a roll shape, so that its volume is reduced to about 1/5 or less, have.

5 is a flowchart illustrating a radio control method using a piezoelectric module according to the present invention.

The radio control method using the piezoelectric module according to the present invention includes a piezoelectric module installation step S510, a piezoelectric module electrical energy generation step S520, an electrical energy generation step S530 of the transmission part, an electrical energy reception step S540 of the reception part, And an operating step 550 of the power supply.

In the piezoelectric module mounting step (S510), at least one piezoelectric module is disposed inside the housing.

The electrical energy generating step S520 generates electrical energy using the vibration energy generated by the vibration or movement of the housing provided with the piezoelectric module. That is, the vibration energy is applied to the piezoelectric module housed in the housing by the movement of the housing or the like, so that the piezoelectric module is transformed and restored and the vibration energy is converted into electric energy.

In the electric energy generating step (S530) of the transmitting unit, the transmitting unit generates electric energy generated through the piezoelectric module.

In the electrical energy receiving step (S540) of the receiving unit, the receiving unit receives the electrical signal generated from the transmitting unit.

In operation step 550 of the power supply unit, the electric energy received by the receiving unit is operated so that the power supply unit connected to the receiving unit becomes usable in the power supply connection unit.

Meanwhile, after the electric energy generating step S520, the controller may further include a step S525 of rectifying the electric energy generated through the piezoelectric module to generate a constant current.

The control unit rectifies the electric energy generated by the piezoelectric module to generate a constant current. To this end, the control unit may include a rectifying circuit for generating a constant current and various driving circuits.

The method may further include a step S527 of storing the constant current by a charging unit electrically connected to the control unit after the step S525 of generating the constant current.

The charging unit electrically connected to the control unit stores electric energy generated from the piezoelectric module, and stores the rectified electric energy. The charging unit is connected to the transmission unit to supply electric energy necessary for the operation of the transmission unit. On the electrical side, an adjustment means such as a switch may be included between the live part and the transmitter part.

According to the present invention, the electric energy obtained by using the vibration of the piezoelectric module can be controlled through the wireless transmitter and the receiver.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

110: housing 120: piezoelectric module
130: Relay circuit 140: Transmitter
150: Receiving unit 160: Power supply unit
170: controller 180:

Claims (16)

housing;
A piezoelectric module accommodated in the housing and generating electric energy by using vibration energy generated according to vibration or movement of the housing;
A transmitter connected to the piezoelectric module to generate an electrical signal using the piezoelectric module;
A receiver for receiving an electrical signal generated from the transmitter; And
And a power supply unit connected to the receiving unit. The energy harvesting radio control system using the piezoelectric module.
The method according to claim 1,
The transmitting unit
Wherein the control unit is a Zigbee, bluetooth, or wireless LAN module.
The method according to claim 1,
The receiving unit
Wherein the transmitting unit receives the radio signal generated by the operation of the transmitting unit.
The method of claim 3,
The radio signal
And an RF signal (radio frequency signal). The energy harvesting radio control system using the piezoelectric module.
The method according to claim 1,
A control unit electrically connected to the piezoelectric module and generating a constant current by rectifying electric energy generated through the piezoelectric module; And
And a charging unit electrically connected to the control unit to store the constant current. The energy harvesting wireless control system according to claim 1,
The method of claim 3,
The transmitting unit
And the piezoelectric module is connected to the first relay circuit.
The method of claim 3,
The receiving unit
And the power supply unit is connected to the second relay circuit.
8. The method of claim 7,
The receiving unit
And when the wireless signal is received, operates the second relay circuit to make the power supply unit operable.
The method according to claim 1,
The piezoelectric module
A support plate;
A first piezoelectric plate and a second piezoelectric plate respectively attached to both sides of the support plate; And
And a piezoelectric chord coupled to the support plate through the opposite edges of the support plate.
10. The method of claim 9,
The piezo-
Wherein the piezoelectric resonator is formed in one of a ring shape, a spring shape, and a screw shape.
10. The method of claim 9,
The support plate
Wherein the piezoelectric material is formed of one or more materials selected from the group consisting of copper (Cu), aluminum (Al), silver (Ag), gold (Au), polyethylene terephthalate (PET), and stainless steel Control system.
The method according to claim 1,
The first piezoelectric plate and the second piezoelectric plate
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 (Na, K) NbO 3 , and (Na, K, Li) NbO 3 based on the total of at least one piezoelectric material selected from the group consisting of Pb (ZrO 2 ) O 3 + silicon polymer and Pb (Zr, Ti) O 3 + epoxy polymer An energy harvesting radio control system using a piezoelectric module.
The method according to claim 1,
The power supply unit
And at least one power connection unit disposed at a predetermined interval in the power supply unit.
Installing a piezoelectric module in the housing;
The piezoelectric module generating electrical energy using vibration energy generated by vibration or movement of the housing;
Generating an electrical signal by the transmitter using the piezoelectric module;
Receiving an electrical signal generated by the transmitting unit; And
And operating a power supply unit connected to the receiving unit.
15. The method of claim 14,
After generating the electrical energy,
Wherein the control unit further comprises a step of rectifying the electric energy generated through the piezoelectric module to generate a constant current.
16. The method of claim 15,
After the step of generating the constant current,
Further comprising the step of storing the constant current by a charging unit electrically connected to the control unit.
KR1020130126084A 2013-10-22 2013-10-22 Energy harvesting wireless control system using piezoelectric harvesting and wireless control method using the same KR20150046815A (en)

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KR1020130126084A KR20150046815A (en) 2013-10-22 2013-10-22 Energy harvesting wireless control system using piezoelectric harvesting and wireless control method using the same
PCT/KR2014/002578 WO2015060505A1 (en) 2013-10-22 2014-03-26 System for wirelessly controlling energy harvesting using piezoelectric module and wireless control method using same

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106385198A (en) * 2016-09-27 2017-02-08 安徽大学 Wireless temperature measuring device with self-powered S-shaped piezoelectric cantilever beam
KR20170033166A (en) 2015-09-16 2017-03-24 대우조선해양 주식회사 Active vibration reduction apparatus with independent energy harvesting structure
KR20220096220A (en) 2020-12-30 2022-07-07 한국과학기술연구원 Triboelectric based energy harvesting module and ultrasonic wave energy harvesting device having it

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000233157A (en) * 1999-02-15 2000-08-29 Murata Mfg Co Ltd Vibration generator
JP4813005B2 (en) * 2000-07-13 2011-11-09 デイビス ボイド クラーク Power supply built-in switching device
JP4224710B2 (en) * 2004-06-09 2009-02-18 セイコーエプソン株式会社 Piezoelectric element, piezoelectric actuator, piezoelectric pump, ink jet recording head, ink jet printer, surface acoustic wave element, frequency filter, oscillator, electronic circuit, thin film piezoelectric resonator, and electronic device
KR100889329B1 (en) * 2007-07-11 2009-03-18 한밭대학교 산학협력단 Self power-generated wireless input device
JP2011151900A (en) * 2010-01-19 2011-08-04 Panasonic Electric Works Co Ltd Non-contact power supply system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170033166A (en) 2015-09-16 2017-03-24 대우조선해양 주식회사 Active vibration reduction apparatus with independent energy harvesting structure
CN106385198A (en) * 2016-09-27 2017-02-08 安徽大学 Wireless temperature measuring device with self-powered S-shaped piezoelectric cantilever beam
CN106385198B (en) * 2016-09-27 2018-05-29 合肥磐石自动化科技有限公司 A kind of wireless temperature measuring device of S-shaped piezoelectric cantilever self energizing
KR20220096220A (en) 2020-12-30 2022-07-07 한국과학기술연구원 Triboelectric based energy harvesting module and ultrasonic wave energy harvesting device having it

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