CN111884543B - Multi-direction vibration energy harvesting system - Google Patents
Multi-direction vibration energy harvesting system Download PDFInfo
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- CN111884543B CN111884543B CN202010835825.0A CN202010835825A CN111884543B CN 111884543 B CN111884543 B CN 111884543B CN 202010835825 A CN202010835825 A CN 202010835825A CN 111884543 B CN111884543 B CN 111884543B
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- 238000003306 harvesting Methods 0.000 title claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
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- 239000002033 PVDF binder Substances 0.000 claims description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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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
- H02N2/186—Vibration harvesters
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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
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Abstract
The invention discloses a multi-direction vibration energy harvesting system which comprises a plurality of multi-direction vibration energy harvesting units, an energy harvester shell and an energy harvesting circuit, wherein the energy harvester shell is arranged on the energy harvesting circuit; the multi-direction vibration energy harvesting unit finishes the collection and conversion of vibration energy through the piezoelectric vibrator, the wedge-shaped mass block and the energy conversion circuit; the energy harvester shell can clamp the multi-directional vibration energy harvesting units through a specific mechanical structure, and the energy management circuit board in the energy harvester shell can store energy for weak current collected by each energy harvesting unit, so that the standard for direct use of electric equipment is achieved, and the limitations of single energy harvesting direction and lower output voltage of the existing structure are effectively overcome.
Description
Technical Field
The invention relates to the technical field of new energy power generation, in particular to a multi-direction vibration energy harvesting system.
Background
With the rapid development of social economy, new words such as "unmanned" and "intelligent", "smart mine", "intelligent fully mechanized coal mining face" and the like are gradually emerging in coal mining. On the basis, the wireless monitoring and sensing system suitable for underground is developed greatly. Therefore, how to conveniently and reasonably supply power to the wireless sensing system becomes a problem to be solved urgently. Based on the characteristics of complex underground environment and abundant vibration energy, various vibration energy collecting devices are generated by transportation. However, the traditional unidirectional vibration energy harvesting device is difficult to be widely applied to complex environments such as underground coal mines due to the limitations of single energy harvesting direction, low energy harvesting efficiency and the like. Therefore, the design of the multi-direction vibration energy harvester suitable for underground coal mine mining excitation is significant.
Disclosure of Invention
The invention aims to provide a multi-direction vibration energy harvesting system, which is used for solving the problems in the prior art and solving the energy supply problem of an underground wireless sensing system. The mechanical structure of the system can effectively overcome the limitation of single energy harvesting direction of the existing structure, and has great significance for improving the efficiency of the energy harvesting device.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a multi-direction vibration energy harvesting system which comprises a plurality of multi-direction vibration energy harvesting units, an energy harvester shell and an energy harvesting circuit, wherein the energy harvester shell is arranged on the energy harvesting circuit;
the multi-directional vibration energy harvesting unit is arranged in the energy harvester shell; the multi-directional vibration energy capturing unit comprises a spring vibrator, a piezoelectric vibrator and an energy capturing unit shell, wherein, the energy harvesting unit shell comprises end covers arranged at two ends, an installation cylinder, a spacer ring, compression cylinders and circuit bins, the circuit bins are respectively arranged at the inner sides of the end cover at the top and the end cover at the bottom, the compression cylinders are respectively arranged at the inner sides of the two circuit bins, the installation cylinder is arranged between the two compression cylinders, the spacer ring is arranged between the mounting cylinder and the pressing cylinder, the spring oscillator comprises two cylindrical compression springs and a central mass block, the central mass block comprises a vibration column and a wedge block, the vibration column is connected between the inner ends of the two cylindrical compression springs, the outer ends of the two cylindrical compression springs are respectively connected with the two end covers, and the wedge block is of a wedge-shaped circumferential structure circumferentially arranged on the vibration column; the piezoelectric vibrator comprises a spring piece and a PVDF piezoelectric film, wherein the spring piece surrounds the wedge-shaped block and is clamped between the mounting cylinder and the spacer ring and between the spacer ring and the compression cylinder; the central mass block struts and tightly contacts two groups of spring pieces fixed on the same spacer ring through the wedge-shaped circumference of the wedge-shaped block; the PVDF piezoelectric film is pasted on the bent side of the spring piece;
the energy harvesting circuit comprises an energy conversion circuit and an energy management circuit; the two circuit bins are respectively provided with the energy conversion circuit, the output line of the piezoelectric vibrator is connected with the input end of the energy conversion circuit, and the energy conversion circuit finishes rectification, filtering and voltage stabilization; the energy management circuit mainly completes energy storage work.
Preferably, a protection cylinder is arranged outside the energy capturing unit shell, and an annular elastic buckle is arranged at the bottom end of the protection cylinder.
Preferably, the inner sides of the two end covers are respectively provided with a longitudinal limiting boss, the inner side of the longitudinal limiting boss is provided with a limiting groove for limiting one end of the cylindrical compression spring, and the two opposite ends of the vibrating column are provided with limiting grooves for limiting the other end of the cylindrical compression spring.
Preferably, the outer parts of the two end covers are respectively bonded with a conducting strip, and the output lines of the energy conversion circuit are respectively welded on the conducting strips at the two ends according to polarities after penetrating through the threading holes.
Preferably, the energy harvester shell comprises a shell, a side baffle and a front panel, the shell of the energy harvester shell is of an upper layer structure, a middle layer structure and a lower layer structure, a circuit board slot is arranged in the upper layer structure, the energy management circuit board is fixed through the circuit board slot, and an output cable of the energy management circuit board passes through an outlet on a top plate of the upper layer structure and is led out of the shell; a spiral clamping device is arranged in the middle layer structure and comprises a clamping spiral structure and a clamping handle, the middle part of the clamping spiral structure is provided with a trapezoidal transmission thread, two ends of the clamping spiral structure are provided with square guide rods with round corners, the end surface of one end of the clamping spiral structure is provided with a round upper clamping boss, and the clamping handle is an L-shaped handle with a structure in threaded connection with the trapezoidal transmission thread; the top plate and the bottom plate of the middle layer structure are respectively provided with three square guide holes, the square guide rods of the clamping spiral structure are respectively arranged in the two opposite square guide holes in a penetrating manner, and the outer side of the clamping spiral structure is provided with a clamping handle in a spiral fit manner; the lower layer structure is divided into three cavities by the vertical baffle, and in each cavity, the multi-direction vibration energy harvesting unit is clamped and fixed between the upper clamping boss and the lower clamping boss on the lower layer structure base plate through the spiral clamping device.
Preferably, the clamping screw structure and the lower clamping boss are both made of conductive materials and are both electrically connected with the input end of the circuit board of the energy management circuit.
Preferably, the side baffle is inserted into one side of the shell, a front panel slot is arranged on the top plate and the bottom plate of the shell, a locking jack is arranged on the side plate of the shell opposite to the side baffle, a locking plug is arranged on one side of the front panel opposite to the locking jack, the top and the bottom of the front panel are inserted into the slot, and the locking plug is locked in the locking jack.
Preferably, a notch is arranged on one side of the vertical baffle plate close to the front panel.
Preferably, the compression cylinder and the spacer ring, and the mounting cylinder and the spacer ring are connected through screws.
Preferably, the two wedge-shaped blocks are arranged on the vibration column and are integrally formed with the vibration column.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a multi-direction vibration energy harvesting system which comprises a plurality of multi-direction vibration energy harvesting units, a special energy harvester shell and a related energy harvesting circuit. The multi-direction vibration energy harvesting unit finishes the collection and conversion of vibration energy through the piezoelectric vibrator, the wedge-shaped mass block and the energy conversion circuit; the energy harvester shell can clamp the multi-directional vibration energy harvesting units through a specific mechanical structure, and the energy management circuit board in the energy harvester shell can store energy for weak current collected by each energy harvesting unit, so that the standard for direct use of electric equipment is achieved, and the limitations of single energy harvesting direction and lower output voltage of the existing structure are effectively overcome.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic overall structure of a multi-directional vibration energy harvesting system according to the present invention;
FIG. 2 is a schematic structural diagram of a cross section of a multi-directional vibration energy harvesting unit in the present invention;
FIG. 3 is a schematic structural diagram of a protective cylinder of the multi-directional vibration energy harvesting unit in the present invention;
FIG. 4 is a schematic structural view of a vibration energy harvester enclosure of the present invention;
FIG. 5 is a schematic view of another angular configuration of the vibration energy harvester enclosure of the present invention;
FIG. 6 is a schematic view of the construction of a clamping screw according to the present invention;
FIG. 7 is a schematic view of the construction of the clamp handle of the present invention;
FIG. 8 is a schematic circuit diagram of the multi-directional vibration energy harvesting system of the present invention.
In the figure: 1-end cap; 2-a set screw; 3, conducting strips; 4-a return spring; 5-longitudinal limiting boss; 6-transverse limiting holes; 7-an energy conversion circuit; 8-a circuit bin; 9-threading holes; 10-a compression cylinder; 11-spacer ring; 12-mounting the barrel; 13-PVDF piezoelectric film; 14-a spring leaf; 15-a wedge-shaped block; 16-a protective cylinder; 17-elastic buckle; 18-a housing; 19-locking the jack; 20-clamping the handle; 21-vertical baffle plates; 22-an energy management circuit; 23-clamping the helical structure; 24-side baffle; 25-side baffle slot; 26-a locking plug; 27-a front panel; 28-outlet holes; 29-lower clamping boss; 30-front panel slot; 31-square guide bar; 32-trapezoidal drive threads; 33-upper clamping boss; 34-a multidirectional vibration energy harvesting unit; 35-an energy harvester housing; 36-spiral clamping device, 37-vibration column, I-upper layer structure, II-middle layer structure and III-lower layer structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a multi-direction vibration energy harvesting system to solve the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The multi-direction vibration energy harvesting system in the embodiment, as shown in fig. 1 and fig. 2, includes a plurality of multi-direction vibration energy harvesting units 34, an energy harvester housing 35 and an energy harvesting circuit;
the multi-directional vibration energy capturing unit 34 is arranged in the energy capturing device shell 35; the multi-direction vibration energy harvesting unit 34 comprises a spring oscillator, a piezoelectric oscillator and an energy harvesting unit shell, wherein the energy harvesting unit shell comprises end covers 1, mounting cylinders 12, a spacer ring 11, compression cylinders 10 and circuit bins 8 which are arranged at two ends, the inner sides of the end cover 1 at the top and the end cover 1 at the bottom are respectively provided with the circuit bins 8, the inner sides of the two circuit bins 8 are respectively provided with the compression cylinders 10, the mounting cylinder 12 is arranged between the two compression cylinders 10, the spacer ring 11 is arranged between the mounting cylinder 12 and the compression cylinder 10, the compression cylinders 10, the spacer ring 11, the mounting cylinder 12 and the spacer ring 11 are fixedly connected through screws, the spring oscillator comprises two cylindrical compression springs 4 and a central mass block, the central mass block comprises a vibration column 37 and two wedge-shaped blocks 15 which are integrally formed with the vibration column 37, the vibration column 37 is connected between the inner ends of the two cylindrical compression springs 4, the two cylindrical compression springs 4 are respectively connected with the two end covers, the wedge-shaped block 15 is a wedge-shaped circumferential structure which is circumferentially arranged on the vibrating column 37; the piezoelectric vibrator comprises a spring piece 14 and a PVDF piezoelectric film 13, wherein the spring piece 14 surrounds a wedge-shaped block 15 and is clamped between the mounting cylinder 12 and the spacer ring 11 and between the spacer ring 11 and the compression cylinder 10; the central mass block props up two groups of spring pieces 14 fixed on the same spacing ring 11 through the wedge-shaped circumference of the wedge-shaped block 15 and is in close contact with the spring pieces; the PVDF piezoelectric film 13 is attached to the side of the spring piece 14 where it is bent, i.e., to the top end surface of the spring piece 14 on the top, and to the bottom end surface of the spring piece 14 on the bottom.
The outer part of the energy capturing unit shell is provided with a protection cylinder 16, as shown in fig. 3, the bottom end of the protection cylinder 16 is provided with an annular elastic buckle 17, and the elastic buckle 17 effectively protects the internal circuit, greatly reduces the axial burden of threaded connection and increases the reliability.
The output line of the piezoelectric vibrator passes through a reserved gap between the mounting cylinder and the pressing cylinder and between the spacer rings 11, penetrates through a threading hole 9 on the side surface of the circuit bin 8 along a passage between the shell and the protection cylinder 16, and is connected to the input end of an energy conversion circuit 7 arranged in the circuit bin 8.
In the embodiment, the inner sides of the two end covers 1 are respectively provided with a longitudinal limiting boss 5, the inner side of the longitudinal limiting boss 5 is provided with a limiting groove for limiting one end of the cylindrical compression spring 4, and two ends of the opposite vibration column 12 are provided with limiting grooves for limiting the other end of the cylindrical compression spring 4; the middle part of the circuit bin 8 is provided with a transverse limiting hole 6, and the longitudinal limiting boss 5 and the transverse limiting hole 6 are respectively used for limiting the longitudinal position and the transverse position of the central mass block, so that the piezoelectric vibrator is prevented from being damaged due to overlarge displacement of the central mass block during vibration.
The energy harvesting circuit comprises an energy conversion circuit 7 and an energy management circuit 22; the two circuit bins 8 are respectively provided with an energy conversion circuit 7, the output line of the piezoelectric vibrator penetrates out of a reserved gap between the shell and the spacer ring 11, penetrates through a threading hole 9 on the side surface of the circuit bin 8 along a passage between the shell and the protective barrel 16 and is connected to the input end of the energy conversion circuit 7, and the energy conversion circuit 7 finishes rectification, filtering and voltage stabilization; the energy management circuit 22 primarily performs energy storage operations. The outer parts of the two end covers 1 are respectively bonded with a conducting plate 3 through an adhesive, and output lines of the energy conversion circuit 7 are respectively welded on the conducting plates 3 at the two ends according to polarities after penetrating out of the threading holes 9.
As shown in fig. 4 and 5, the energy harvester shell 35 comprises a shell 18, a side baffle 24 and a front panel 27, wherein the shell 18 is of an upper, middle and lower three-layer structure. A circuit board slot is formed in the upper layer structure I, and the energy management circuit board 22 is fixed through the circuit board slot; the energy management circuit board 22 mainly completes energy storage work, and an output cable of the energy management circuit board passes through an outlet 28 on a top plate of the upper layer structure I and is led out of the shell; a spiral clamping device 36 is arranged in the middle layer structure II in a penetrating mode; the lower layer structure III is divided into three cavities by the vertical baffle 21, and in each cavity, the multi-direction vibration energy capturing unit 36 is clamped and fixed between the upper clamping boss 33 and the lower clamping boss 29 on the bottom plate of the lower layer structure III through the spiral clamping device 36.
As shown in fig. 6 and 7, the screw clamp 36 includes a clamping screw structure 23 and a clamping handle 20; the middle part of the clamping spiral structure 20 is provided with a trapezoidal transmission thread 32, two ends of the clamping spiral structure are provided with square guide rods 31 with round corners, and the end surface of one end of the clamping spiral structure is provided with a round upper clamping boss 33; the clamping handle is an L-shaped handle with a structure which is in threaded connection with the trapezoidal transmission thread.
In this embodiment, the top plate and the bottom plate of the middle layer structure ii are respectively provided with three square guide holes, the square guide rods 31 of the clamping spiral structure 23 respectively penetrate through the two opposite square guide holes, and the clamping handle 20 is installed on the outer side of the clamping spiral structure 23 through spiral fit.
The clamping screw 23 and the lower clamping boss 29 are both made of an electrically conductive material and are both electrically connected to the input of the energy management circuit 22.
In this embodiment, a side baffle slot 25 is disposed on one side of the housing 18, the side baffle 24 is inserted into one side of the housing 18, a front panel slot 30 is disposed on the top plate and the bottom plate of the housing 18, a locking jack 19 is disposed on the side plate of the housing 18 opposite to the side baffle 24, a locking plug 26 is disposed on one side of the front panel 27 opposite to the locking jack 19, the top and the bottom of the front panel 27 are inserted into the slot 25, and the locking plug 26 is locked in the locking jack 19.
In this embodiment, the side of the standing baffle 21 near the front panel 27 is provided with a larger notch to allow the multi-directional vibration energy capturing unit 34 to be inserted and removed during clamping.
When the multi-direction vibration energy capturing system is used, firstly, the front panel 27 of the energy capturing device shell 35 is opened, the side baffle 24 is taken down, then the three multi-direction vibration energy capturing units 343 are sequentially arranged from right to left, then the side baffle 24 and the front panel 27 are sequentially inserted, and the front panel 27 is bent to lock the exposed part of the plug 26, so that the purpose of mechanical locking is achieved. Finally, the back of the energy harvester housing 35 is connected to mechanical equipment to complete the entire installation.
In the aspect of mounting the multi-direction vibration energy capturing unit 34, the clamping handle 20 at the pre-mounting position is pulled outwards, the corresponding clamping spiral structure 23 rises immediately, the distance between the upper clamping boss 29 and the lower clamping boss 29 is increased, then the multi-direction vibration energy capturing unit 34 is placed at a proper position, and the clamping handle 20 is pulled inwards, so that the mounting work of the multi-direction vibration energy capturing unit 34 is completed.
In the aspect of system operation, the vibration of mechanical equipment firstly vibrates the energy harvester shell 35 fixed on the machine body, and then the vibration is transmitted to each multi-direction vibration energy harvesting unit 34, so that the central mass block 15 is caused to vibrate along multiple directions under the constraint of the cylindrical compression spring 4. The vibration of the central mass block can cause the spring piece 14 to bend in different degrees, and the PVDF piezoelectric film 13 pasted on the bending side of the spring piece 14 can generate electric energy due to piezoelectric effect, and the electric energy is conducted to the conducting strip 3 after rectification, filtering and voltage stabilization processing of the energy conversion circuit 7, and further conducted to the clamping spiral structure 23 and the lower clamping boss 29 which clamp the multi-direction vibration energy capturing unit 34. The wires connected to the clamping screw 23 and the lower clamping boss 29 conduct the electric energy to the input end of the energy management circuit board 22, and the electric energy is led out of the housing through the cable after energy storage processing, so as to be directly used by electric equipment (a schematic circuit diagram is shown in fig. 8).
The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (8)
1. A multi-directional vibration energy harvesting system is characterized in that: the energy harvester comprises a plurality of multidirectional vibration energy harvesting units, an energy harvester shell and an energy harvesting circuit;
the multi-directional vibration energy harvesting unit is arranged in the energy harvester shell; the multi-directional vibration energy capturing unit comprises a spring vibrator, a piezoelectric vibrator and an energy capturing unit shell, wherein, the energy harvesting unit shell comprises end covers arranged at two ends, an installation cylinder, a spacer ring, compression cylinders and circuit bins, the circuit bins are respectively arranged at the inner sides of the end cover at the top and the end cover at the bottom, the compression cylinders are respectively arranged at the inner sides of the two circuit bins, the installation cylinder is arranged between the two compression cylinders, the spacer ring is arranged between the mounting cylinder and the pressing cylinder, the spring oscillator comprises two cylindrical compression springs and a central mass block, the central mass block comprises a vibration column and a wedge block, the vibration column is connected between the inner ends of the two cylindrical compression springs, the outer ends of the two cylindrical compression springs are respectively connected with the two end covers, and the wedge block is of a wedge-shaped circumferential structure circumferentially arranged on the vibration column; the piezoelectric vibrator comprises a spring piece and a PVDF piezoelectric film, wherein the spring piece surrounds the wedge-shaped block and is clamped between the mounting cylinder and the spacer ring and between the spacer ring and the compression cylinder; the central mass block struts and tightly contacts two groups of spring pieces fixed on the same spacer ring through the wedge-shaped circumference of the wedge-shaped block; the PVDF piezoelectric film is pasted on the bent side of the spring piece;
the energy harvesting circuit comprises an energy conversion circuit and an energy management circuit;
a conducting strip is bonded outside each of the two end covers, an output line of the energy conversion circuit penetrates out of the conducting strips at the two ends according to a threading hole and then is respectively welded on the conducting strips at the two ends according to polarity, and the threading hole is formed in the side face of the circuit bin;
the energy harvester shell comprises a shell body, a side baffle and a front panel, the shell body of the energy harvester shell is of an upper layer structure, a middle layer structure and a lower layer structure, a circuit board slot is arranged in the upper layer structure, an energy management circuit board is fixed through the circuit board slot, and an output cable of the energy management circuit board passes through a wire outlet on a top plate of the upper layer structure and is led out of the shell body; a spiral clamping device is arranged in the middle layer structure and comprises a clamping spiral structure and a clamping handle, the middle of the clamping spiral structure is provided with a trapezoidal transmission thread, two ends of the clamping spiral structure are provided with square guide rods with round corners, the outer end faces of the square guide rods are provided with round upper clamping bosses, and the clamping handle is an L-shaped handle with a structure in threaded connection with the trapezoidal transmission thread; the top plate and the bottom plate of the middle layer structure are respectively provided with three square guide holes, the square guide rods of the clamping spiral structure are respectively arranged in the two opposite square guide holes in a penetrating manner, and the outer side of the clamping spiral structure is provided with a clamping handle in a spiral fit manner; the lower layer structure is divided into three cavities by the vertical baffle, and in each cavity, the multi-direction vibration energy harvesting unit is clamped and fixed between the upper clamping boss and a lower clamping boss on the lower layer structure base plate through the spiral clamping device;
the two circuit bins are respectively provided with the energy conversion circuit, the output line of the piezoelectric vibrator is connected with the input end of the energy conversion circuit, and the energy conversion circuit finishes rectification, filtering and voltage stabilization; the energy management circuit mainly completes energy storage work.
2. The multi-directional vibration energy harvesting system of claim 1, wherein: the outer part of the energy capturing unit shell is provided with a protection cylinder, and the bottom end of the protection cylinder is provided with an annular elastic buckle.
3. The multi-directional vibration energy harvesting system of claim 1, wherein: the inner sides of the two end covers are respectively provided with a longitudinal limiting boss, the inner side of the longitudinal limiting boss is provided with a limiting groove for limiting one end of the cylindrical compression spring, and the two ends of the vibration column are provided with a limiting groove for limiting the other end of the cylindrical compression spring.
4. The multi-directional vibration energy harvesting system of claim 1, wherein: the clamping spiral structure and the lower clamping boss are both made of conductive materials and are electrically connected with the input end of the circuit board of the energy management circuit.
5. The multi-directional vibration energy harvesting system of claim 1, wherein: the side baffle is inserted into one side of the shell, a front panel slot is formed in a top plate of the upper layer structure and a bottom plate of the shell, a locking jack is formed in a side plate of the shell opposite to the side baffle, a locking plug is arranged on one side of the front panel opposite to the locking jack, the top and the bottom of the front panel are inserted into the front panel slot, and the locking plug is locked in the locking jack.
6. The multi-directional vibration energy harvesting system of claim 1, wherein: a notch is formed in one side, close to the front panel, of the vertical baffle.
7. The multi-directional vibration energy harvesting system of claim 1, wherein: the compression cylinder is connected with the spacer ring and the installation cylinder is connected with the spacer ring through screws.
8. The multi-directional vibration energy harvesting system of claim 1, wherein: the wedge block is provided with two on the vibration post to with vibration post integrated into one piece.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835825.0A CN111884543B (en) | 2020-08-19 | 2020-08-19 | Multi-direction vibration energy harvesting system |
| AU2021105898A AU2021105898A4 (en) | 2020-08-19 | 2021-08-19 | Multidirectional vibration energy harvesting system |
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| CN202010835825.0A CN111884543B (en) | 2020-08-19 | 2020-08-19 | Multi-direction vibration energy harvesting system |
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| CN111884543A CN111884543A (en) | 2020-11-03 |
| CN111884543B true CN111884543B (en) | 2021-06-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016092888A (en) * | 2014-10-30 | 2016-05-23 | 京セラ株式会社 | Piezoelectric generator |
| CN107395056A (en) * | 2017-08-17 | 2017-11-24 | 浙江师范大学 | A kind of multi-dimensional vibration energy accumulator |
| CN107769614A (en) * | 2017-11-02 | 2018-03-06 | 安徽理工大学 | A kind of multi-direction vibrational energy harvester of piezoelectric type |
| CN111049425A (en) * | 2019-12-31 | 2020-04-21 | 厦门大学 | Novel low-frequency multidirectional vibration energy collecting device with liquid as energy capturing medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10263173B2 (en) * | 2015-01-16 | 2019-04-16 | The Regents Of The University Of Michigan | Multi-axis piezoelectric transducer |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016092888A (en) * | 2014-10-30 | 2016-05-23 | 京セラ株式会社 | Piezoelectric generator |
| CN107395056A (en) * | 2017-08-17 | 2017-11-24 | 浙江师范大学 | A kind of multi-dimensional vibration energy accumulator |
| CN107769614A (en) * | 2017-11-02 | 2018-03-06 | 安徽理工大学 | A kind of multi-direction vibrational energy harvester of piezoelectric type |
| CN111049425A (en) * | 2019-12-31 | 2020-04-21 | 厦门大学 | Novel low-frequency multidirectional vibration energy collecting device with liquid as energy capturing medium |
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| CN111884543A (en) | 2020-11-03 |
| AU2021105898A4 (en) | 2021-10-21 |
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