CN215420044U - Vibration energy source collecting device - Google Patents
Vibration energy source collecting device Download PDFInfo
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- CN215420044U CN215420044U CN202121821758.3U CN202121821758U CN215420044U CN 215420044 U CN215420044 U CN 215420044U CN 202121821758 U CN202121821758 U CN 202121821758U CN 215420044 U CN215420044 U CN 215420044U
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Abstract
The utility model discloses a vibration energy acquisition device which comprises a vibration mechanical energy conversion device and an acquisition device. The vibration mechanical energy conversion device comprises a permanent magnet group, an upper iron core, a lower iron core, a fixed middle shaft, a coil, a spring piece, a winding support and a shell. The permanent magnet group is formed by overlapping two magnets, the polarities of the adjacent magnet surfaces are the same, a magnetic conduction gasket is arranged between the adjacent magnet surfaces, the permanent magnet group is fixed between the upper iron core and the lower iron core, and the permanent magnet group and the upper iron core and the lower iron core are positioned and fastened by the fixed middle shaft. The outer surface of the wire mould is provided with a groove, a conductive coil is arranged in the groove, the wire mould is fixed on the winding support, and the upper part and the lower part of the shell are respectively provided with a fixed cover and an upper bottom cover and a lower bottom cover. The acquisition device comprises a rectification circuit, a voltage stabilizing circuit and an energy storage unit, and is placed in the shell. This patent converts the vibrations mechanical energy in the environment into the electric energy to direct current voltage is stabilized in the output, can replace traditional battery power supply mode, avoids frequently changing the trouble of battery, reduces environmental pollution, and convenient to use need not to maintain.
Description
Technical Field
The utility model relates to the technical field of self-power generation, and relates to a vibration energy source acquisition device.
Background
With the rapid advance of electronic technology in recent years, the power consumption of wireless communication is lower and lower, and a good application scene is provided for energy collection. Sustainable wireless sensor networks are widely used due to two key driving technologies behind them, namely energy harvesting and energy management. Still faces a serious problem of how to ensure the power supply of the wireless sensing units. The traditional industry has a popular approach to use batteries. However, batteries are bulky, have a limited life and are difficult to replace periodically. For thousands of wireless sensor nodes randomly scattered in a natural environment, the regular replacement of batteries is almost impossible, and the batteries contain heavy metals, so that the improper treatment of the waste batteries easily causes serious environmental pollution. Therefore, the development requirements of the wireless sensor network cannot be met by adopting the traditional battery. Mechanical energy, solar energy, wind energy and the like in the environment can be converted into electric energy through an energy collection technology, so that the problem of power supply of a low-power consumption wireless sensor is solved instead of a traditional battery, and electric power is permanently provided for sensors, electronic devices and circuits in applications such as a wireless sensor network.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vibration energy acquisition device which can convert vibration energy into electric energy, is environment-friendly, and is convenient to use and free of maintenance.
In order to achieve the purpose, the utility model adopts the following technical scheme: shaking energy source collection system includes: the vibration mechanical energy conversion device and the acquisition device; wherein vibrations mechanical energy conversion device includes: the permanent magnet group, the upper iron core, the lower iron core, the fixed middle shaft, the conductive coil, the spring pieces, the winding support and the shell;
the upper part of the permanent magnet group is connected with the upper iron core and is fixedly connected with the upper side of the shell through the spring piece;
the bottom of the permanent magnet group is connected with the lower iron core and is fixedly connected with the bottom of the shell through the spring piece;
the fixed middle shaft is used for fastening the permanent magnet group, the upper iron core and the lower iron core;
the first end of the bracket is arranged in a gap between the iron core and the permanent magnet group, the second end of the bracket is fixedly connected with the shell, and the winding bracket penetrates through the lower iron core;
the wire mould is used for winding the conductive coil, is arranged on the first end of the winding support and is fixedly connected with the winding support;
the conductive coil surrounds the permanent magnet group along the radial direction and is wound in the wire mould groove;
collection system, including: the energy storage device comprises a rectifying circuit, a voltage stabilizing circuit and an energy storage unit;
the collecting device is arranged in the shell;
the input end of the rectification circuit is electrically connected with the conductive coil, and the output end of the rectification circuit is electrically connected with the input end of the voltage stabilizing circuit;
the output end of the voltage stabilizing circuit is electrically connected with the energy storage unit, and the output end of the voltage stabilizing circuit outputs electric energy.
Preferably, the permanent magnet group is formed by axially overlapping two or more axially magnetized strong permanent magnets, the polarities of the adjacent surfaces of the permanent magnets are the same, and a magnetic conductive gasket is arranged between the permanent magnets;
the magnetic conductive gasket is used for eliminating repulsive force between the magnets and increasing radial magnetic induction intensity, is made of high magnetic conductive materials, and has the thickness of 0.4-0.7 time of that of the strong permanent magnet;
the strong permanent magnet and the magnetic conductive gasket form a hollow cylinder.
Meanwhile, the magnetic conductive gasket made of the high magnetic conductive material has smaller magnetic resistance relative to the air gap, and is beneficial to enhancing the magnetic field intensity around the conductive coil, so that the voltage generated by induction when the coil cuts magnetic lines of force is enhanced.
Preferably, the permanent magnet group includes: the permanent magnets are axially arranged along the shell, a magnetic conducting gasket is used between the strong permanent magnets and is arranged in the center of the iron core, the magnetic conducting gasket is used for eliminating repulsive force between the magnets and increasing radial magnetic induction intensity, and the strong permanent magnets are made of high magnetic conducting materials.
Preferably, the center plane of the conductive coil and the center of the magnetic conductive gasket are the same plane, and the conductive coil is in a multi-turn round shape. The height of the conductive coil is less than 0.9 times of the thickness of the permanent magnet group;
preferably, the number of the conductive coils is larger than 1, the conductive coils are wound on the wire mould, and intervals are arranged among the conductive coils.
Preferably, the lower iron core is fixedly connected with the upper iron core;
the lower iron core and the upper iron core are made of high-permeability materials; and an upper magnetic core and a lower magnetic core structure are adopted, and a winding support penetrates through a side hole of the lower iron core through a hole reserved on the side surface of the iron core and a buckling installation mode of the upper iron core and the lower iron core.
The upper iron core and the lower iron core can adopt asymmetric structures, and the winding support can adopt different shapes and fixing modes with the shell. The quality of the iron core is also beneficial to improving the quality of the moving block, thereby improving the output power density of the energy collecting device.
The center of the upper iron core and the center of the lower iron core are provided with screw holes, a fixed middle shaft is arranged in the through hole of the permanent magnet group, and the screw is matched with the fixed middle shaft through the screw holes, so that the permanent magnet group is positioned at the center, and the upper iron core and the lower iron core are fastened with the permanent magnet group together to form a mass block capable of axially moving. The permanent magnet group and the upper and lower iron cores are adopted as the main bodies, so that the moving mass is high, and compared with a conductive coil which is used as a moving mass block, the power density of the energy collecting device can be improved.
Preferably, the housing further comprises: the fixing cover, the upper bottom cover and the lower bottom cover;
the inner ring of the spring piece at the upper side is fixedly connected with the bottom of the fixed cover, and three symmetrical clamping seats at 120-degree intervals on the outer ring are fixedly connected with the top surface of the upper iron core;
the inner ring of the spring leaf at the lower side is fixedly connected with the top surface of the lower bottom cover, and three symmetrical clamping seats at 120-degree intervals on the outer ring are fixedly connected with the lower iron core.
Preferably, the fixed cover is fixedly connected with the upper part of the shell;
the fixed cover is provided with an annular groove and a through hole, and the annular groove is used for fixing the acquisition device;
the outer layer of the collecting device is wrapped with a packaging layer;
the packaging layer is a plastic packaging layer or a rubber sealing material packaging layer;
and the wire end of the conductive coil penetrates through the through hole of the fixing cover to be electrically connected with the acquisition device.
The encapsulation layer protects the acquisition device from undesired environmental influences.
Preferably, the spring piece is in a symmetrical pattern, and the elastic arm is in a multilayer structure. When the spring piece is installed, the patterns are completely corresponding, and the radial movement of the spring piece can be better limited.
The length of the elastic arm is changed by changing the number of layers, so that the elastic coefficient of the spring is adjusted, the area of the spring is not increased, and the planar torsion motion can be effectively avoided when the spring piece vibrates. Meanwhile, the structure has high rigidity in the radial direction, so that the spring piece is prevented from moving radially during vibration, and only axial movement is generated. The spring piece can be integrally formed by spring steel and can also be spliced by a multilayer structure. The spring piece is made of an elastic material 60Mn2SiA, and when the vibration energy source collecting device is subjected to mechanical motion or vibration, the elastic piece vibrates along with the mechanical motion or the vibration.
The wire mould, the shell, the upper bottom cover, the lower bottom cover and the fixing cover are made of nonmagnetic materials, and the winding support, the fixing middle shaft and the screws are made of nonmagnetic materials.
The collecting device comprises a rectifying circuit, a voltage stabilizing circuit and an energy storage unit, and converts alternating current generated by induction of the wire coil into direct current with certain voltage according to the load requirement in specific application, and the collecting device is preferably placed in the shell. Other commonly used functional circuits, such as a wireless communication, a low-power-consumption microprocessor, a sensor and the like, can also be arranged in the shell at the same time, so that a totally-enclosed Internet of things scheme with high reliability and self-sufficient energy is formed. For part of requirements, circuit devices such as the acquisition device and the like can be used as additional circuit devices and placed outside the shell.
The iron core and the magnet are designed into the vibration part, the coil and the winding support are used as the fixing parts, the iron core and the magnet are favorable for improving the mass density of the vibration part so as to improve the output power of energy collection, and the iron core is also favorable for adjusting the mass to adjust the resonance frequency without adjusting the structural design of other parts. The adjustment of the resonant frequency can be achieved by combining the graphic design of the spring piece without changing the structures of other parts, thereby being beneficial to the large-scale mass production of structural parts. And the coil and the winding support are used as fixing parts, so that the coil is protected and the overall reliability is improved.
The vibration energy collecting device has the beneficial effects that the vibration energy collecting device provided by the utility model can convert the vibration energy in the surrounding environment into electric energy. Therefore, the wireless sensor power supply device replaces the traditional battery to solve the power supply problem of the low-power consumption wireless sensor, and permanently provides power for the sensor, electronic devices and circuits in the application such as a wireless sensor network and the like, thereby reducing the environmental pollution. Has the advantages of convenient use, no need of maintenance and the like.
Drawings
Fig. 1 is a sectional configuration diagram of the present patent.
Fig. 2 is a structural view of the spring plate.
Fig. 3 is a side view of the core and winding support assembly.
Fig. 4 is a top view of the core and winding support assembly.
Fig. 5 is a frame diagram of the acquisition device.
In the figure, 1, an upper bottom cover, 2, a lower bottom cover, 3, a spring piece, 4, a shell, 5, an upper iron core, 6, a lower iron core, 7, a magnet, 8, a magnetic conductive gasket, 9, a winding support, 10, a wire mold, 11, a conductive coil, 12, a fixed middle shaft, 13, a screw, 14, an annular groove, 15, a collection device, 16, a fixed cover and 17 through holes are formed.
Detailed Description
This patent is further described below with reference to fig. 1 and examples.
In fig. 1, the vibroseis energy harvesting device comprises a vibroseis mechanical energy conversion and harvesting two-part 15 device. The conversion device of the vibration mechanical energy comprises a permanent magnet group, an upper iron core, a lower iron core, a fixed middle shaft 12, a conductive coil 11, a spring piece 3 and a shell 4. The permanent magnet group is formed by overlapping two magnets 7, the polarities of the adjacent magnet surfaces are the same, a magnetic conduction gasket 8 is arranged between the adjacent magnet surfaces, the permanent magnet group is fixed between the upper iron core 5 and the lower iron core 6, and the permanent magnet group is fastened by a fixed middle shaft 12. The outer surface of the wire mould 10 is provided with a groove, a group of conductive coils 11 are arranged in the groove, the wire mould 10 is fixed on the winding support 9, and the shell 4 is respectively provided with a fixed cover 16, an upper bottom cover 1 and a lower bottom cover 2. The acquisition part 15 comprises a rectifying circuit, a voltage stabilizing circuit and an energy storage unit, and the acquisition part 15 is arranged in the shell 4.
As shown in fig. 1, the magnet 7 and the magnetic conductive gasket 8 are hollow cylinders, which is beneficial to reducing air damping, and the magnetic conductive gasket 8 is made of a magnetic conductive material.
The wire mould 10 is arranged between the iron core and the permanent magnet group, fixed on the winding support 9 and provided with a small distance gap with the permanent magnet group and the upper iron core 5, the lower iron core 6 is provided with a small distance gap, the conductive coil 11 radially surrounds the permanent magnet group and is just positioned at the periphery of the magnetic conductive gasket 8, the conductive coil 11 is in a multi-turn round shape and used for enabling the conductive coil 11 to cut the magnetic conductive wire to generate current, and the height of the conductive coil 11 is less than 0.9 time of the thickness of the permanent magnet group. And a plurality of groups of conductive coils 11 which are mutually spaced can be wound outside the permanent magnet group, the number of the conductive coils corresponds to the number of the magnetic conductive gaskets, and the shape of the linear mode, the winding mode of the conductive coils and the shape can be changed.
The lower iron core 6 penetrates through the winding support 9 to be connected with the upper iron core 5.
The winding support 9 is fixed with the shell 4 and the lower bottom cover 2, and the inner wall of the winding support has a small distance gap with the lower iron core 6 and the spring piece 3.
The shell 4 is made of a non-magnetic material so as to avoid the influence of the magnetic material on the movement of the magnet 7 and the iron core, and the shell 4 can provide structural support for the vibration mechanical energy conversion and collection two-part device.
The upper iron core 5, the lower iron core 6, the magnet 7, the magnetic conductive gasket 8 and the fixed middle shaft 12 are all provided with a central through hole.
The center of the upper iron core 5 and the center of the lower iron core 6 are provided with screw holes, a fixed middle shaft 12 is arranged in the through hole of the permanent magnet group, the fixed middle shaft 12 penetrates through the upper magnet 7, the magnetic conducting gasket 8 and the lower magnet 7 from top to bottom respectively, and is matched with the fixed middle shaft 12 through the screw holes by using screws 13, so that the permanent magnet group is positioned at the central position, the upper iron core and the lower iron core are fastened together with the permanent magnet group, and a mass block which moves up and down axially is formed. When the vibration energy collecting device is subjected to mechanical movement or vibration, the spring piece 3 drives the mass block to generate relative movement relative to the shell 4 in the axial direction.
The two-part vibrating mechanical energy converting and collecting device 15 is placed in the housing 4.
The upper bottom cover 1 is fixed on the upper part of the shell 4 to protect the internal structure from the external environment. While providing a fixation for the acquisition portion 15.
The lower bottom cover 2 is fixed at the lower part of the shell 4 to protect the internal structure from the external environment. While providing support and fixation for the spring plate 3.
The fixing cover 16 is fixed to the upper portion of the housing 4 to protect the internal structure from the external environment. While providing support and fixation for the spring plate 3.
When the two spring pieces 3 are installed, the figures need to be completely corresponding, the radial movement of the spring pieces 3 can be better limited, the inner rings of the upper spring pieces 3 and the lower spring pieces 3 are respectively fixed with the fixed cover 16 and the lower bottom cover 2, and the three symmetrical clamping seats at 120-degree intervals on the outer rings are respectively buckled and fixed with the upper iron core 5 and the lower iron core 6.
The upper spring plate cooperates with the fixed cover, and the upper half of the fixed cover 16 defines an annular groove 14 for providing a fixing function for the collecting part 15, wherein the collecting part 15 is arranged in the annular groove 14, and the shape of the annular groove can be modified according to the shape of the collecting part. The collecting portion 15 is encapsulated in the annular groove 14 by a plastic or rubber sealing material which seals and protects the collecting portion 15 from undesired environmental influences, such as humidity, etc. The fixing cover 16 has a through hole 17 near the radial outer side, and the end of the conductive coil 11 passes through the side hole of the iron core and passes through the through hole 17 of the fixing cover 16 along the inner wall of the housing 4 to be connected with the collecting part 15.
The multi-turn conductive coil 11, the upper iron core 5, the lower iron core 6, the gasket 8 and the axially magnetized ring magnet 7 form an electromagnetic loop, the spring piece 3 drives the magnet 7 and the magnetically conductive gasket 8 to move axially under the action of external vibration and move relative to the conductive coil 11, and the conductive coil 11 cuts magnetic lines of force to generate electric energy to supply power to an external circuit.
As shown in fig. 2: the spring piece 3 is in a symmetrical pattern, the elastic arms are in a four-layer structure, the elastic arms are in a multilayer structure, and the length of the elastic arms is changed by changing the number of layers, so that the elastic coefficient of the spring is adjusted, the area of the spring is not increased, and plane torsional motion can be effectively avoided when the spring piece vibrates. Meanwhile, the structure has high rigidity in the radial direction, so that the spring piece is prevented from moving radially during vibration, and only axial movement is generated. The spring piece can be integrally formed by spring steel and can also be spliced by a multilayer structure. The spring plate 3 is made of 60Mn2SiA elastic material, and when the vibration energy source collecting device is subjected to mechanical movement or vibration, the spring plate 3 vibrates.
The vibration energy source collecting device is vibrated by the outside, when the iron core and the magnet 7 are moved away from the central balance position, the two spring pieces 3 have the same acting force on the iron core, and the two spring pieces 3 have the same elastic coefficient.
As shown in fig. 3: the vibration energy source collecting device adopts an upper iron core and a lower iron core structure, a hole is reserved on the side surface of the magnetic core, the upper iron core and the lower iron core are buckled, and the winding support 9 penetrates through the lower iron core, so that the conductive coil 11 is arranged in a gap between the iron core and the permanent magnet group and can be fixed with the shell 4. Changing the mass of the core allows the resonant frequency to be easily tuned to a desired value with precision. According to the requirement, the upper iron core and the lower iron core can adopt asymmetric structures, and the winding support 9 can adopt different shapes and a fixing mode with the shell 4. The quality of the iron core is also beneficial to improving the quality of the moving block, thereby improving the output power density of the energy collecting device.
As shown in fig. 5, a frame diagram of the collecting part 15 of the vibration energy collecting device is shown, the collecting part 15 is connected with the conductive coil 11, the collecting part 15 comprises a rectifying circuit, a voltage stabilizing circuit and an energy storage unit, alternating current induced by the conductive coil 11 is converted into direct current with certain voltage according to the load requirement in specific application, and the collecting part 15 is preferably arranged in the shell 4. Other commonly used functional circuits, such as a wireless communication, a low-power-consumption microprocessor, a sensor and the like, can also be arranged in the shell 4 at the same time, so that a totally-enclosed internet of things scheme with high reliability and self-sufficient energy is formed. For some requirements, the circuit devices such as the collecting section 15 can be disposed outside the housing 4 as additional circuit devices.
The wire mould 10, the shell 4, the upper bottom cover 1, the lower bottom cover 2 and the fixing cover 16 are made of nonmagnetic materials, and the winding support 9, the fixing middle shaft 12 and the screw 13 are made of nonmagnetic materials.
The iron core and the magnet are designed into the vibration part, the coil and the winding support are used as the fixing parts, the iron core and the magnet are favorable for improving the mass density of the vibration part so as to improve the output power of energy collection, and the iron core is also favorable for adjusting the mass to adjust the resonance frequency without adjusting the structural design of other parts. The adjustment of the resonant frequency can be achieved by combining the graphic design of the spring piece without changing the structures of other parts, thereby being beneficial to the large-scale mass production of structural parts. And the coil and the winding support are used as fixing parts, so that the coil is protected and the overall reliability is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. Shaking energy source collection system includes: vibrations mechanical energy conversion device and collection system, its characterized in that: wherein vibrations mechanical energy conversion device includes: the permanent magnet group, the upper iron core, the lower iron core, the fixed middle shaft, the conductive coil, the spring pieces, the winding support and the shell;
the upper part of the permanent magnet group is connected with the upper iron core and is fixedly connected with the upper side of the shell through the spring piece;
the bottom of the permanent magnet group is connected with the lower iron core and is fixedly connected with the bottom of the shell through the spring piece;
the fixed middle shaft is used for fastening the permanent magnet group, the upper iron core and the lower iron core;
the first end of the bracket is arranged in a gap between the iron core and the permanent magnet group, the second end of the bracket is fixedly connected with the shell, and the winding bracket penetrates through the lower iron core;
the wire mould is used for winding the conductive coil, is arranged on the first end of the winding support and is fixedly connected with the winding support; the conductive coil surrounds the permanent magnet group along the radial direction and is wound in the wire mould groove;
collection system, including: the energy storage device comprises a rectifying circuit, a voltage stabilizing circuit and an energy storage unit;
the collecting device is arranged in the shell;
the input end of the rectification circuit is electrically connected with the conductive coil, and the output end of the rectification circuit is electrically connected with the input end of the voltage stabilizing circuit;
the output end of the voltage stabilizing circuit is electrically connected with the energy storage unit, and the output end of the voltage stabilizing circuit outputs electric energy.
2. The vibroseis energy source acquisition device of claim 1, wherein: the permanent magnet group is formed by axially superposing two or more axially magnetized strong permanent magnets, the polarities of the adjacent surfaces of the permanent magnets are the same, and a magnetic conductive gasket is arranged between the permanent magnets;
the magnetic conductive gasket is used for eliminating repulsive force between the magnets and increasing radial magnetic induction intensity, is made of high magnetic conductive materials, and has the thickness of 0.4-0.7 time of that of the strong permanent magnet;
the strong permanent magnet and the magnetic conductive gasket form a hollow cylinder.
3. The vibroseis energy source acquisition device of claim 1, wherein: the permanent magnet group comprises: the permanent magnets are axially arranged along the shell, a magnetic conducting gasket is used between the strong permanent magnets and is arranged in the center of the iron core, the magnetic conducting gasket is used for eliminating repulsive force between the magnets and increasing radial magnetic induction intensity, and the strong permanent magnets are made of high magnetic conducting materials.
4. The vibroseis energy source acquisition device of claim 2 or 3, wherein: the center plane of the conductive coil and the center of the magnetic conductive gasket are the same plane, and the conductive coil is in a multi-turn round shape;
the height of the conductive coil is less than 0.9 times the thickness of the permanent magnet set.
5. The vibroseis energy source acquisition device of claim 1, wherein: the lower iron core is fixedly connected with the upper iron core;
the lower iron core and the upper iron core are made of high-permeability materials; and an upper magnetic core and a lower magnetic core structure are adopted, and a winding support penetrates through a side hole of the lower iron core through a hole reserved on the side surface of the iron core and a buckling installation mode of the upper iron core and the lower iron core.
6. The vibroseis energy source acquisition device of claim 1, wherein: the shell, still include: the fixing cover, the upper bottom cover and the lower bottom cover;
the inner ring of the spring piece at the upper side is fixedly connected with the bottom of the fixed cover, and three symmetrical clamping seats at 120-degree intervals on the outer ring are fixedly connected with the top surface of the upper iron core;
the inner ring of the spring leaf at the lower side is fixedly connected with the top surface of the lower bottom cover, and three symmetrical clamping seats at 120-degree intervals on the outer ring are fixedly connected with the lower iron core.
7. The vibroseis energy source acquisition device of claim 6, wherein: the fixed cover is fixedly connected with the upper part of the shell;
the fixed cover is provided with an annular groove and a through hole, and the annular groove is used for fixing the acquisition device;
the outer layer of the collecting device is wrapped with a packaging layer;
the packaging layer is a plastic packaging layer or a rubber sealing material packaging layer;
and the wire end of the conductive coil penetrates through the through hole of the fixing cover to be electrically connected with the acquisition device.
8. The vibroseis energy source acquisition device of claim 1 or 6, wherein: the spring pieces are in symmetrical patterns, and the elastic arms are in a multilayer structure; the patterns are completely corresponding when the spring piece is installed.
9. The vibroseis energy source acquisition device of claim 4, wherein: the number of the conductive coils is more than 1, the conductive coils are wound on the wire mould, and intervals are arranged among the conductive coils.
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| CN202121821758.3U CN215420044U (en) | 2021-08-05 | 2021-08-05 | Vibration energy source collecting device |
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| CN202121821758.3U CN215420044U (en) | 2021-08-05 | 2021-08-05 | Vibration energy source collecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595354A (en) * | 2021-08-05 | 2021-11-02 | 杭州电子科技大学 | Vibration energy source collecting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595354A (en) * | 2021-08-05 | 2021-11-02 | 杭州电子科技大学 | Vibration energy source collecting device |
| CN113595354B (en) * | 2021-08-05 | 2024-05-03 | 杭州电子科技大学 | Vibration energy collection device |
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