KR20150003473A - Oscillation energy harvesting apparatus and electricity generating system using the same - Google Patents

Abstract

The present invention relates to an oscillation energy harvesting device, which can effectively harvest wasted energy to use the harvested energy as power of a device using low power and can be coupled to a periodic oscillation generator to perform efficient generation, and a power generation system using the same. The oscillation energy harvesting device can have various sizes, be used for various purposes, and have a long life at a relatively low cost by using a solid leaf spring, which elastically oscillates by a forced oscillation method using external power instead of an oscillation energy harvesting method using an expensive piezoelectric device with a high risk of damage due to direct impact transmission, to harvest energy from oscillation of the leaf spring. The oscillation energy harvesting device can induce resonance by adjusting the characteristics of the leaf spring according to external oscillation to match a unique frequency of the leaf spring with external energy, thereby improving efficiency by maximizing the amplitude of oscillation. As a result, configuration costs, installation costs, and management costs can be reduced and universality can be increased, thereby securing economical efficiency.

Description

TECHNICAL FIELD [0001] The present invention relates to a vibrating energy harvesting apparatus, and a power generation system using the vibrating energy harvesting apparatus.

The present invention relates to a vibration energy harvesting apparatus and a power generation system using the same, and more particularly, to an apparatus and method for efficiently harvesting abandoned energy to be used as a power source of a low power utilization apparatus, A vibrating energy harvesting device, and a power generation system using the same.

Recently, interest in energy harvesting has been increasing. Energy harvesting harvests energy that is harvested from the environment and converts it into usable electric energy. It is mainly used for vibration, human movement, light, heat, As well as various techniques for effectively obtaining electricity from unintended or abandoned energy sources.

Among these energy harvesting technologies, interest is increasing in the technology to recover vibration energy, and it is a technology to convert vibration of various large rotating machines and structures, various impact energy into electric energy by using piezoelectric element. For example, there has been studied a method of converting the surface impact energy of a person on the ground to a ground impact energy on the road surface by driving the vehicle through a piezoelectric element, and the impact energy is applied to an area where walking is frequently performed, Experiments have also been carried out to embed structures for collection.

However, the conventional vibration energy harvesting technique is a method of charging electric power generated by using a piezoelectric element, so that an expensive piezoelectric element is indispensably required. In particular, since the impact must be directly transmitted to such a piezoelectric element, it is required to have an impact resistance characteristic depending on the application, so that the cost is high, and when the impact is more than the allowable amount, the life is shortened or damaged.

In particular, although the initial installation cost is excessively high and the management cost is high as compared with the power generated effectively, it is used experimentally but it is not enough to commercialize it.

Therefore, there is a high demand for a vibration energy harvesting apparatus capable of effectively recovering vibration energy, and low in installation cost and management cost, and a power generation system capable of effectively securing small-scale power by utilizing the vibration energy harvesting apparatus Interest is high.

[Document 1] Korean Patent Laid-Open Publication No. 10-2010-090432 [Wireless self-generated charging device using a piezoelectric composite]

It is an object of embodiments of the present invention to remedy the above-mentioned problems, and it is an object of embodiments of the present invention to provide a vibration plate, a vibration plate, a vibration plate, The vibration energy harvesting device having a long lifetime and suitable for various sizes and applications at a relatively low cost can be constructed by utilizing the elasticity of the elastic body and the vibration frequency of the elastic body, So that the characteristics of the elastic body can be adjusted so as to coincide with each other, thereby maximizing the width of vibration by inducing resonance, thereby improving the efficiency, and a power generation system using the same.

Another object of the embodiments of the present invention is to make the base plate on which a plurality of elastic bodies are arranged to vibrate by an external force and to increase the energy recovery efficiency by matching the resonance frequencies of the base plate elasticity- A vibrator configured to constitute a vibration energy harvesting device and to be wound by an external physical force to provide a periodic impact corresponding to the resonance frequency of the elastic body or the elastic holding portion and a escapement to provide a periodic impact by the spring, A vibration energy harvesting apparatus further comprising a forced vibration generator, and a power generation system using the same.

It is still another object of the present invention to provide a vibration energy harvesting apparatus and a power generation system using the same, in which a plurality of elastic bodies having a plurality of different natural frequencies are constructed to increase power generation efficiency for various vibrations.

It is still another object of the present invention to provide a method and apparatus for recovering energy by elastically vibrating an elastic body by indirectly using abandoned vibration energy of a vibration source in which periodic vibration is generated, And to provide a vibration energy harvesting device capable of independently and stably establishing a monitoring environment by providing the monitoring device as a power source, and a power generation system using the same.

According to an aspect of the present invention, there is provided a vibration energy harvesting apparatus comprising: a base plate having reciprocating motion with respect to at least one axis by an external force; At least one elastic body fixed on one side of the base plate and vibrated according to movement of the base plate; A magnetic chuck that is fixed to the other side of the elastic body and reciprocates in a predetermined locus according to elastic vibration; And a power conversion unit formed corresponding to the reciprocating locus of the magnetic weight and generating electric power according to the movement of the magnetic weight.

And a base plate elasticity retaining part formed between the base plate and the main body part and guiding the reciprocating movement of the base plate.

The power conversion unit is disposed in the base plate or the main body unit.

The natural frequency according to the elastic body and the magnetic weight may be varied by adjusting at least one of a physical arrangement state of the elastic body and a weight or a position of the magnetic weight and may further include a natural frequency adjusting unit using one of the adjusting methods .

The elastic body disposed on the base plate may be composed of a plurality of elastic bodies, and the elastic bodies may be divided into two or more different natural frequencies.

And a power generation unit for collecting and charging power of the power conversion unit to provide power for an external device.

A forced vibration generator for physically accumulating energy of an external energy source and generating periodic kinetic energy through the accumulated physical energy; A base plate for reciprocating at least one axis by cyclic kinetic energy provided by the forcible vibration generator; and a base plate fixed on one side of the base plate to vibrate according to movement of the base plate, And a power converting unit having a coil corresponding to the reciprocating locus of the magnetic weight in accordance with the vibration of the elastic body and generating power according to the movement of the magnetic weight.

Wherein the forced vibration generating unit includes: an energy converting unit that converts energy of the energy generating source into rotational force; A winding part accumulating physical energy by a rotational force through the energy conversion part; A discharging unit for converting the energy accumulated in the hand-wound portion into periodic kinetic energy; And a gear portion that is disposed between the spring portion and the exhaust portion to set a resonance period and a force of the exhaust portion.

The energy conversion unit may convert energy of at least one of wind, hydraulic, temperature difference, vibration, impact, and attraction into rotational motion.

The energy conversion unit may further include a blocking unit for stopping the external energy conversion according to an excessive impact or a state of the connected winding part.

The energy harvesting portion may include a body portion for guiding the movement of the base plate, and a base plate elasticity retaining portion formed between the base plate and the body portion to induce reciprocating movement of the base plate.

In the energy harvesting part, the natural frequency according to the elastic body and the magnetic weight may be varied by adjusting at least one of a physical arrangement state of the elastic body, a weight and a position of the magnetic weight, and a natural frequency adjusting unit .

The elastic body disposed on the base plate may be composed of a plurality of elastic bodies, and the elastic bodies may be divided into two or more different natural frequencies.

The energy harvesting unit may further include a power generating unit for collecting and charging electric power of the power converting unit to provide power for an external device.

The vibration energy harvesting apparatus and the power generation system using the vibration energy harvesting apparatus according to the embodiment of the present invention are not limited to the vibration energy recovery system in which an expensive piezoelectric element with a high risk of breakage is directly damaged by a direct impact transmission, A vibration energy harvesting device having a long lifetime and suitable for various sizes and uses at a relatively low cost can be constructed by utilizing an elastic body such as a coil spring or the like and recovering energy from the vibration of the elastic body. In addition, by adjusting the characteristics of the elastic body so that the natural frequency of the elastic body and the external force coincide with each other, resonance is induced to maximize the vibration width to increase the efficiency, And the economy can be secured by increasing the versatility.

A vibration energy harvesting apparatus and a power generation system using the vibration energy harvesting apparatus according to an embodiment of the present invention include a base plate elasticity holding unit for vibrating a base plate on which a plurality of elastic bodies are disposed by an external force, And a spring which is wound by an external physical force to provide a cyclic impact corresponding to the resonance frequency of the elastic holding part and the spring holding part A general vibration energy harvesting device can be used for power generation by constructing a forced vibration generator including a discharge device that provides a cyclic impact and an effect of enabling constant development of unspecified external energy through physical construction .

The vibration energy harvesting apparatus and the power generation system using the vibration energy harvesting apparatus according to the embodiments of the present invention can constitute a plurality of elastic bodies having a plurality of different natural frequencies to enable energy harvesting for various vibrations, thereby increasing versatility.

The vibration energy harvesting apparatus and the power generation system using the vibration energy harvesting apparatus according to the embodiment of the present invention indirectly use the abandoned vibration energy of the vibration source generating the periodic vibration to elastically vibrate the elastic body to recover energy, It is possible to construct an independent and stable monitoring environment by providing the power source of the monitoring device for checking the state of the vibration source.

1 is a conceptual diagram illustrating the operation of a vibration energy harvesting apparatus.
FIG. 2 is a configuration diagram of a vibration energy harvesting apparatus according to an embodiment of the present invention; FIG.
FIG. 3 is a view showing an arrangement of a base plate and a resiliently oscillating leaf spring applied to a vibration energy harvesting apparatus according to an embodiment of the present invention. FIG.
4 is a configuration diagram of a power generation system using a vibration energy harvesting apparatus according to an embodiment of the present invention.
5 is an example of a base plate reciprocating motion of a vibration energy harvesting apparatus according to another embodiment of the present invention.
6 is a view showing examples of the plate spring natural frequency adjusting methods of the vibration energy harvesting apparatus according to the embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

FIG. 1 is a conceptual diagram of operation of a vibration energy harvesting apparatus. As shown in FIG. 1, the energy recovery unit 20 is configured to convert physical vibrations or periodic displacements provided by the vibration / periodic displacement generating source 10 into electric power.

The energy recovery unit 20 generally uses a piezoelectric element. Generally, such a piezoelectric element is manufactured through a semiconductor process. The energy recovery unit 20 includes a sensor for determining the degree of external displacement, .

In recent years, piezoelectric devices for power generation from vibrational energy have appeared, but in the case of a zinc oxide-based piezoelectric device mainly used for this purpose, the energy conversion efficiency is only 0.5%, which is ineffective. Recently, there have been studies to improve the energy conversion efficiency by applying a special polymer material to such a piezoelectric element. However, there is a problem that output is limited and mass production is not easy.

In particular, in the case of a piezoelectric element, since the principle of generating electric charges according to the stress applied to a specific crystal plate is used, there is a structural characteristic that the crystal plate must flow by physical impact, and the external physical impact is transmitted immediately There is a problem that it is easily broken when an external impact is excessive. Therefore, when a piezoelectric element having sufficient impact resistance is used, the energy conversion efficiency with respect to a small impact is low, and the construction cost is excessively increased, so that the economical efficiency is extremely low, so that it is rarely used effectively.

In addition, since the devices produced through the semiconductor process must be continuously exposed to repeated physical shocks, the lifetime is not long and frequent replacement is necessary.

FIG. 2 is a block diagram of a vibration energy harvesting apparatus 100 according to an embodiment of the present invention. As shown in FIG. 2, the vibration energy harvesting apparatus 100 includes a base plate 110 for reciprocating at least one axis according to an external force, At least one plate spring 130 fixed on one side of the base plate 110 and vibrated according to the movement of the base plate 110 and a second plate spring 130 fixed to the other side of the plate spring 130, A power conversion unit 140 formed to correspond to the reciprocating locus of the magnetic weight 131 and generating electric power according to the movement of the magnetic weight 131, A main body 101 for guiding the movement of the base plate 110 and a power generator 150 for collecting and charging power of the power converter 140 and providing power for an external device.

The base plate 110 reciprocates in a horizontal direction, and a roller 111 for reducing the frictional force due to the movement may be formed. When the external force is transmitted only by the impact, And a base plate resilience holding unit 120 for allowing the elastic member 110 to perform an elastic reciprocating motion.

The power conversion unit 140 may include a coil 141 disposed along the trajectory of the magnetic weight 131 so as to generate electric power according to the movement of the magnetic weight 131, The power generation unit 150 collects electric power from the coil 141, accumulates the electric power, regulates the electric power by the rectification and the constant electric power, and outputs the stable electric power.

For example, the leaf spring is resiliently vibrated through the abandoned vibration energy of the vibration source in which the periodic vibration is generated, thereby recovering the energy, and providing the recovered energy as a power source of the monitoring device for confirming the state of the vibration source , An independent and stable monitoring environment can be constructed.

As shown in the drawing, the power conversion unit 140 may be disposed in the main body 101. When considering the movement of the base plate 110, the distance from the magnetic weight 131 may vary, The distance from the magnetic weight 131 to the plate 110 can be kept constant.

The generated amount of the power generating unit 150 may be determined according to the number of coils of the power converting unit 140, the size of the magnetic weight 131, and the degree of vibration of the leaf spring 130, The magnetic weight 131, and the power conversion unit 140 can be appropriately adjusted.

Since the plate spring 130, the magnetic weight 131, and the power conversion unit 140 can be implemented with a very general and general purpose material, the configuration can be configured at a low cost, It is possible to make a universal configuration regardless of the manufacturer.

The plate spring 130 is elastically vibrated according to the reciprocating motion of the base plate 110. Even if the size of reciprocation of the base plate 110 is small, the amount of vibration oscillated by the elasticity is accumulated, The energy itself to be provided by the base plate 110 does not need to be constantly increased and the impact should be transmitted in a multiple of the natural frequency. For example, when the natural frequency of the leaf spring 130 is about 10 Hz The base plate 110 does not need to be physically high speed as long as the base plate 110 generates a reciprocating motion due to an impact of about one to several seconds.

In mechanical vibrations, vibration means that a physical quantity such as the position of an object periodically changes around a certain value. Such vibration is caused by a physical shock, and vibration can continue even after the shock is stopped. Vibration is called free vibration. On the other hand, forced oscillation by external force exerted periodically is called forced oscillation. The forced oscillation by the external force from the outside depends on the action of the oscillation period and amplitude externally. In free oscillation, There is a unique frequency (cycle) in the vibration system, and if the forced vibration is generated in accordance with this cycle, the amplitude of the vibration system becomes very large.

On the other hand, since the natural frequency and period of the vibration system are independent of the initial condition and amplitude of vibration, the vibration system vibrates at a natural frequency when there is an impact, and forced vibration occurs when an external force is continuously applied.

As a result, when the base plate 110 vibrates due to an external force, the plate spring 130 on the base plate 110 vibrates freely with a natural frequency, and when the energy applied is insufficient, Lt; / RTI > At this time, when the base plate 110 repeatedly applies an external force to the plate spring 130, the amplitude of the plate spring gradually increases and operates in a forced vibration mode by an external force.

When the reciprocating period of the base plate 110 by the external force matches the natural frequency of the leaf spring 130, resonance occurs to maximize the amplitude of the leaf spring 130, The conversion efficiency is maximized. This resonance corresponds to a characteristic inherent to the natural world, which is obtained by matching the resonance period irrespective of the magnitude of the external force, so that the power conversion efficiency can be optimized even if the external force is not increased.

When the natural frequency of the base plate elasticity holding part 120, which determines the reciprocating period of the base plate 110 reciprocated by the external force, corresponds to the natural frequency of the leaf spring 130, the vibration energy harvesting device 100) can be maximized. In this case, energy recovery of the vibration energy harvesting apparatus 100 is possible even when the provided magnitude of the external force is irregular.

The base plate 110 may be directly coupled to the external force providing means without the base plate resilient holding portion 120. In this case, the period of providing the external force may be a force vibration that directly affects the vibration of the leaf spring 130 State. If the vibration period of the external force is fixed and the external force period coincides with the natural frequency of the leaf spring 130, the efficiency of the vibration energy harvesting apparatus 100 can be maximized by resonance.

FIG. 3 illustrates an arrangement of a base plate 210 and a resiliently oscillating plate spring unit 220 applied to a vibration energy harvesting apparatus according to another embodiment of the present invention, A fixing part 221 for fixing the spring 222 and one side of the leaf spring to the base plate 210 and a magnetic weight 223 formed on the other side of the leaf spring.

The base plate 210 is coupled to the guide portion 211 so that the direction of the reciprocating motion is fixed by the guide portion 211 and the frictional force due to the reciprocating motion is transmitted to the bearing (Not shown) or lubricant (not shown).

Meanwhile, when the external force is periodically provided but can be varied or is different from the natural frequency of the leaf spring 220, or when the external force is provided non-periodically, the leaf spring 220 is composed of a plurality of plates, The springs may be separated into two or more different natural frequencies. That is, when some plate spring portions have a first natural frequency and some plate spring portions have a second natural frequency, it is possible to provide a high amplitude in some plate spring portions corresponding to the period of external force, .

FIG. 4 is a block diagram of a power generation system using a vibration energy harvesting apparatus 100 according to an embodiment of the present invention. In order to provide an external force to the vibration energy harvesting apparatus 100 shown in FIG. 2, And a forced vibration generating unit 300 for physically accumulating energy and generating periodic kinetic energy through the accumulated physical energy.

As described above, the vibration energy harvesting apparatus 100 oscillates the base plate 110 reciprocally by the external force, and the leaf spring 130 elastically vibrates to produce electric power in the power conversion unit 140.

When the external force is provided to the base plate 110 in accordance with the natural frequency of the leaf spring 130, the efficiency of the vibration energy harvesting apparatus 100 can be maximized by resonance.

The power generation system shown in this sense further comprises a forced vibration generating unit 300 for periodically providing a precise external force. The forced vibration generating unit 300 includes an energy converting unit 300 for converting energy of the energy generating source into rotational force, And a vibration generating unit 302 for generating periodic kinetic energy of the energy converted by the rotational force in the energy converting unit 301. [

The vibration generating unit 302 includes a winding part 310 for accumulating physical energy by a rotational force through the energy converting part 301 and a discharging part for discharging the energy accumulated in the winding part 310 as periodic kinetic energy And a gear portion 320 formed between the winding portion 310 and the dust removing portion 330 to set a resonating period and a force of the dust removing portion 330.

The vibration generating unit 302 may utilize a mechanical watch or a part of a metronome. The vibration generating unit 302 may include various conventional handwheels, gears, and gears that provide an external motion having a unique frequency using a physical energy accumulating means such as a hand- Escapement configuration can be utilized. Especially, the escaping device is a device that rotates the guideline according to the precise time and uses the energy of the spring to continuously vibrate through the escaping wheel and the anchor. By making use of this, it is possible to make accurate time flow, It also creates movements.

The vibration generating unit 302 according to the embodiment of the present invention generates the vibrations of the mechanical watch or the metastable vibration of the metronome as an external force and periodically kinetic energy according to the vibration is transferred to the vibration energy harvesting unit 331 via the external force transmitting unit 331, To the base plate 110 of the apparatus 100.

Since the transmitted periodic vibration is mechanical but can be precisely controlled, it can be matched to the plate spring natural frequency of the vibration energy harvesting apparatus 100.

Meanwhile, when the vibration generating unit 302 is used, the vibration energy harvesting apparatus 100 can always be configured to operate at maximum efficiency.

The energy conversion unit 301 that provides the rotational force to wind the wound portion 310 of the vibration generating unit 302 is configured so that the rotational force provided by the corresponding energy converting unit 301 is directly applied to the kinetic energy of the vibration generating unit 302 Since the energy is provided indirectly by winding the winding part 310 instead of affecting the output period, the energy converted through the energy conversion part 301 can be collected and utilized in various energy irrespective of the cycle, do.

In the illustrated example, the energy conversion unit 301 is a propeller 340 that provides wind power as a rotational force. Accordingly, when energy for winding the spring of the winding part 310 is provided as a rotational force by using the irregular wind force, the vibration energy harvesting device 100 can operate as a periodical external force capable of operating at maximum efficiency, (Not shown).

The energy conversion unit 301 may be configured not only to use the wind power shown in the drawings but also to use hydraulic power using a spinning wheel, temperature difference energy using a Stirling engine, vibration or impact energy using a crankshaft that converts a vertical impact into a rotational force, The vibrating energy harvesting apparatus can use energy of at least one of the attraction force for winding the vibrating energy harvesting apparatus and the vibrating energy harvesting apparatus as energy for operating the vibrating energy harvesting apparatus at maximum efficiency.

Meanwhile, although not shown, the energy conversion unit 310 may further include a cutoff unit for physically stopping the external energy conversion if the excessive impact or the connected winding part is completely wound. For example, an over-winding preventing device may be provided to prevent the winding of the spring when the winding part is fully wound (full winding). When excessive shock is generated, the converting part of the energy converting part and the rotating shaft are separated Configuration can be applied.

Therefore, it is possible to obtain reliability and safety by preventing a situation where an excessive impact is transmitted to the direct energy generating device.

5 shows an example in which the base plate is moved by the kinetic energy provided by the escapement of the forced vibration generating unit. In the above description, the base plate is reciprocated in the left and right directions. However, 410 are fixed to the main body 400 so as to be vertically movable and a base plate elasticity retaining portion 420 for guiding the up and down movement of the base plate 410 below the base plate 410 The external force transmitting means 331 of the dust removing unit 330 applies a force to move the base plate 410 up and down. The plate spring 440 can be elastically vibrated by the upward and downward movement (strictly circular motion) of the base plate 410. Even if the force of the dust-removing portion 330 is weak due to the use of gravity, Can be maintained.

6 is a diagram illustrating a configuration for adjusting the natural frequency of the leaf spring 510. As shown in the figure, the natural frequency of the leaf spring 510 is preferably set to match the external force as much as possible in order to improve efficiency by resonance And the diaphragm spring 510 for this purpose. Of course, there may be other methods such as adjusting the width of the leaf spring or replacing the leaf spring in addition to the illustrated method.

6A shows a fixing part 520 for fixing the leaf spring 510 and the base station 530. The fixing part 520 can be configured to adjust the fixing position of the leaf spring 510 have. If the leaf spring 510 is fixed longer, the natural vibration period becomes longer. If the leaf spring 510 is fixed shorter, the natural vibration period becomes shorter.

6B shows a state in which the position of the magnetic weight 540 disposed on the other side of the leaf spring 510 is varied. As the magnetic weight 540 is configured at the upper end portion, the natural vibration period becomes longer and the natural vibration period becomes longer Is shortened. Of course, the weight of the magnetic weight 540 can be changed (for example, magnet pieces added).

As another example, FIG. 6C shows a state where a plurality of plate spring lower ends are fixed through a fixing plate 550 having a slit through which the plate spring 510 passes, and the fixing plate 550 can be moved up and down. The more frequent the natural vibration period becomes. When such a configuration is used, the natural frequency of a plurality of leaf springs can be set at once.

In the embodiments of the present invention described above, the leaf spring is exemplified as an elastic body that induces the magnetic field transformation by moving the magnetic weight while elastically vibrating while having a natural frequency. However, such an elastic body may have a different structure or shape such as a coil spring It is apparent that other kinds of elastic bodies may be used instead of the above-described leaf spring.

The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. However, the present invention is not limited to the above-described embodiments, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention. .

100: vibration energy harvesting apparatus 101:
110: base plate 111: roller
120: base plate elasticity holding portion 130: leaf spring
131: magnetic pole weight 140: power conversion section
141: Coil 150: Power generator
300: forced vibration generating unit 301: energy converting unit
302: vibration generating unit 310:
320: gear portion 330:

Claims (14)

A base plate for reciprocating at least one axis by an external force;
At least one elastic body fixed on one side of the base plate and vibrated according to movement of the base plate;
A magnetic chuck that is fixed to the other side of the elastic body and reciprocates in a predetermined locus according to elastic vibration;
And a power converting unit formed corresponding to the reciprocating locus of the magnetic weight and generating electric power according to the movement of the magnetic weight.
The apparatus as claimed in claim 1, further comprising a base plate elasticity retaining part that is provided between the base plate and the main body to guide the movement of the base plate, Vibration energy harvesting device.
The vibration energy harvesting apparatus of claim 1, wherein the power conversion unit is disposed in the base plate or the main body unit.
[2] The method of claim 1, wherein the natural frequency according to the elastic body and the magnetic weight can be varied by adjusting at least one of a physical arrangement state of the elastic body, a weight and a position of the magnetic weight, Wherein the vibrating energy harvesting device further includes a vibrating energy harvesting device.
The vibration energy harvesting apparatus according to claim 1, wherein the elastic body disposed on the base plate is composed of a plurality of elastic bodies, and the elastic bodies are divided into two or more different natural frequencies.
The vibration energy harvesting apparatus of claim 1, further comprising a power generator for collecting and charging power of the power converter to provide power for an external device.
A forced vibration generator for physically accumulating energy of an external energy source and generating periodic kinetic energy through the accumulated physical energy;
A base plate for reciprocating at least one axis by cyclic kinetic energy provided by the forcible vibration generator; and a base plate fixed on one side of the base plate to vibrate according to movement of the base plate, And a power converting unit having a coil corresponding to the reciprocating locus of the magnetic weight according to the vibration of the elastic body and generating power according to the movement of the magnetic weight, Features a power generation system.
8. The apparatus according to claim 7, wherein the forced vibration generating unit
An energy conversion unit for converting the energy of the energy source into a rotational force;
A winding part accumulating physical energy by a rotational force through the energy conversion part;
A discharging unit for converting the energy accumulated in the hand-wound portion into periodic kinetic energy;
And a gear portion that is disposed between the spring and the discharge portion to set a resonance period and a force of the discharge portion.
The power generation system according to claim 8, wherein the energy conversion unit converts energy of at least one of wind, hydraulic, temperature difference, vibration, impact, and attraction into rotational motion.
The power generation system according to claim 8, wherein the energy conversion unit further includes a cutoff unit for stopping the external energy conversion according to an excessive impact or a state of the connected winding part.
The apparatus of claim 7, wherein the energy harvesting portion includes a body portion for guiding movement of the base plate, and a base plate elasticity retaining portion formed between the base plate and the body portion for guiding reciprocating motion of the base plate Power generation system.
[8] The energy hubbing unit according to claim 7, wherein the natural frequency according to the elastic body and the magnetic weight can be varied by adjusting at least one of a physical arrangement state of the elastic body, a weight and a position of the magnetic weight, And a natural frequency adjusting unit that uses the natural frequency adjusting unit.
The power generation system according to claim 7, wherein the plurality of elastic bodies disposed on the base plate are divided into two or more different natural frequencies.
The power generation system according to claim 7, wherein the energy harvesting unit further comprises a power generation unit for collecting and charging power of the power conversion unit to provide power for an external device.

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