Hydroelectric generator based on bionic jellyfish and self-powered ocean monitoring system

Abstract

The invention relates to a hydroelectric generator based on a bionic jellyfish and a self-powered ocean monitoring system.The hydroelectric generator comprises a bionic jellyfish structure, a mounting shell and a friction nanometer power generation assembly; the bionic jellyfish structure comprises a spherical-crown-shaped foam plate and an annular elastic piece, and the inner side of the annular elastic piece is connected with the outer side of the spherical-crown-shaped foam plate; the spherical-crown-shaped foam plate is fixedly connected with the top of the mounting shell, and the friction nanometer power generation assembly is mounted in the mounting shell; the friction nanometer power generation assembly comprises a plurality of electrode plates which are coaxial with the spherical-crown-shaped foam plate and arranged at intervals, the electrode plates comprise the first electrode plates and the second electrode plates, the first electrode plates are rigidly installed in the installation shell, and the second electrode plates are elastically installed in the installation shell; the friction nanometer power generation assembly generates power at least based on contact and separation between the first electrode plate and the second electrode plate. The problem that an existing small-scale wave energy conversion device is low in power generation efficiency is solved.

Description

Technical Field

[0001] The present application relates to the field of hydroelectric power generation, and in particular to a hydroelectric generator based on bionic jellyfish and a self-powered ocean monitoring system. Background Art

[0002] As a clean, pollution-free renewable energy source, ocean energy has been widely favored for its huge reserves and development potential. Among them, wave energy, as one of the five main forms of ocean energy, is more stable and has concentrated spatial distribution compared to wind energy. Using the potential energy difference, reciprocating force or buoyancy generated by waves, wave energy conversion equipment (a hydroelectric generator) can convert the mechanical energy generated by waves into electrical energy output. However, due to the relatively low energy density, the existing wave energy conversion devices are mainly developed in the direction of medium and large scale. Although medium and large wave energy conversion devices have unparalleled advantages in energy utilization, with the development and widespread distribution of small sensors, this high entropy energy gradually cannot meet its power supply needs. Small-scale wave energy conversion devices have great application potential in certain specific scenarios, such as distributed energy supply or power supply for offshore buildings. However, the current small-scale wave energy conversion devices have low power generation efficiency due to the low efficiency of wave energy capture and conversion.

[0003] There is currently no effective solution to the problem of low power generation efficiency in current small-scale wave energy conversion devices. Summary of the invention

[0004] The present invention provides a hydroelectric generator based on bionic jellyfish and a self-powered ocean monitoring system to solve the problem of low power generation efficiency in current small-scale wave energy conversion devices.

[0005] In a first aspect, the present invention provides a bionic jellyfish-based hydroelectric generator, comprising a bionic jellyfish structure, a mounting shell and a friction nano-power generation component;

[0006] The bionic jellyfish structure comprises a spherical crown foam plate and an annular elastic sheet, wherein the inner side of the annular elastic sheet is connected to the outer side of the spherical crown foam plate;

[0007] The spherical crown foam plate is fixedly connected to the top of the installation shell, and the friction nano power generation component is installed in the installation shell;

[0008] The friction nano power generation component includes a plurality of spaced-apart electrode plates coaxial with the spherical crown foam plate, wherein the electrode plates are divided into a first electrode plate and a second electrode plate, wherein the first electrode plate is rigidly mounted in the mounting shell, and the second electrode plate is elastically mounted in the mounting shell, and the friction nano power generation component realizes power generation at least based on the contact and separation between the first electrode plate and the second electrode plate.

[0009] In a second aspect, the present invention provides a self-powered ocean monitoring system, comprising a monitoring sensor and the bionic jellyfish-based hydroelectric generator described in the first aspect, wherein the hydroelectric generator supplies power to the monitoring sensor.

[0010] Compared with the related art, the bionic jellyfish-based hydroelectric generator provided by the present invention combines the bionic jellyfish structure with the friction nano-power generation component, realizes the efficient collection and conversion of wave energy, and thus has a higher power generation efficiency. Moreover, the structure of the hydroelectric generator is relatively simple, and it belongs to a small-scale wave energy conversion device. Therefore, the present invention solves the problem of low power generation efficiency of the current small-scale wave energy conversion device.

[0011] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a structural diagram of a hydroelectric generator based on a bionic jellyfish in some embodiments of the present invention;

[0013] Figure 2 is a structural diagram based on a bionic jellyfish structure in some embodiments of the present invention;

[0014] Figure 3 is a structural diagram of a first housing in some embodiments of the present invention;

[0015] Figure 4 is a structural diagram of the second housing in some embodiments of the present invention;

[0016] Figure 5 is a structural diagram of a friction nano power generation component in some embodiments of the present invention;

[0017] Figure 6 is a structural diagram of a connecting shaft in some embodiments of the present invention;

[0018] Figure 7 is a structural diagram of a first electrode plate in some embodiments of the present invention;

[0019] Figure 8 is a structural diagram of a second electrode plate in some embodiments of the present invention;

[0020] Fig. 9 is a structural diagram of the friction nano power generation component in some embodiments of the present invention. DETAILED DESCRIPTION

[0021] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0022] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0023] The present invention provides a hydroelectric generator based on bionic jellyfish.

[0024] Reference Figure 1 and Figure 2 The bionic jellyfish-based hydroelectric generator comprises a bionic jellyfish structure 100, a mounting shell ( Figure 1 , which is a combination of a first shell 200 and a second shell 400) and a friction nano power generation component 300.

[0025] The bionic jellyfish structure 100 includes a spherical crown foam plate 110 and an annular elastic sheet 120. The material of the annular elastic sheet 120 is mainly elastic waterproof material, such as rubber. Preferably, the annular elastic sheet 120 is an integrated structure, but of course a split splicing structure can also be used. The inner side of the annular elastic sheet 120 is connected to the outer side of the spherical crown foam plate 110; the spherical crown foam plate 110 is fixedly connected to the top of the mounting shell, and the friction nano power generation component 300 is installed in the mounting shell. Figure 5The friction nano power generation component 300 includes a plurality of electrode plates coaxial with the spherical crown foam plate 110 and spaced apart from each other. The electrode plates are divided into a first electrode plate 360 ​​and a second electrode plate 370. The first electrode plate 360 ​​is rigidly mounted in the mounting shell, and the second electrode plate 370 is elastically mounted in the mounting shell. The friction nano power generation component 300 realizes power generation based at least on the contact and separation between the first electrode plate 360 ​​and the second electrode plate 370.

[0026] In the above technical solution, the bionic jellyfish structure 100 and the friction nano power generation component 300 are mainly used to achieve power generation. During use, the bionic jellyfish structure 100 floats on the sea surface and drives the installation shell to move up and down with the waves, and the installation shell will drive the first electrode plate 360 ​​and the second electrode plate 370 in the friction nano power generation component 300 to move up and down at the same frequency. Among them, there is a rigid connection relationship between the first electrode plate 360 ​​and the installation shell, and an elastic connection relationship between the second electrode plate 370 and the installation shell. Since the elastic connection has the absorption and release of potential energy, the movement amplitudes of the first electrode plate 360 ​​and the second electrode plate 370 are different. Therefore, during the wave undulation process, the first electrode plate 360 ​​and the second electrode plate 370 are constantly in contact and separation (or close to and away from each other), and the friction nano power generation component 300 can convert mechanical energy into electrical energy.

[0027] The bionic jellyfish structure 100 includes a spherical crown foam plate 110 and an annular elastic sheet 120. The structure can better fit the waves on the sea surface, and can more efficiently absorb wave energy and convert it into its own mechanical energy. In order to absorb wave energy more efficiently, the ratio between the crown height and the radius of curvature of the spherical crown foam plate 110 can be set between 0.015 and 0.034. At this time, the spherical crown foam plate 110 can better absorb the waves on the sea surface. When the waves rise, due to the large contact force area between the spherical crown foam plate 110 and the waves, the waves can be lifted to a greater extent, and more wave energy can be converted into its own mechanical energy.

[0028] The friction nanogenerator (TENG) based on the principle of friction electrification and electrostatic induction coupling can effectively convert mechanical energy into electrical energy output. TENG has the characteristics of high voltage and low current. Compared with the electromagnetic generator, the voltage and current are proportional to the frequency. The output voltage of TENG is independent of the frequency, and the current is proportional to the frequency. Therefore, TENG has better output performance and energy conversion efficiency at low frequency. Since waves have the characteristics of low frequency, TENG can more effectively convert low-frequency mechanical energy into electrical energy output.

[0029] In summary, the bionic jellyfish-based hydroelectric generator provided by the present invention combines the bionic jellyfish structure 100 and the friction nano-power generation component 300 to achieve efficient collection and conversion of wave energy, thereby having a high power generation efficiency. Moreover, the structure of the hydroelectric generator is relatively simple and belongs to a small-scale wave energy conversion device. Therefore, the present invention solves the problem of low power generation efficiency in the current small-scale wave energy conversion device.

[0030] Among them, the electrode plate needs to be isolated from the outside world to avoid contact with seawater. It is necessary to install the housing as a sealed structure, or to set up an additional sealing structure to isolate the electrode plate.

[0031] For example, the friction nano power generation component also includes a cylindrical acrylic barrel 310 coaxial with the spherical crown foam plate 110; the cylindrical acrylic barrel 310 is a sealed structure and is fixedly installed in the installation shell, the first electrode plate 360 ​​is rigidly installed in the cylindrical acrylic barrel 310, and the second electrode plate 370 is elastically installed in the cylindrical acrylic barrel 310. The isolation of the electrode plates is achieved by additionally setting up the cylindrical acrylic barrel 310.

[0032] And, in order to facilitate assembly, the mounting housing can adopt a split structure. Figure 3 and Figure 4 Specifically, the installation shell may include a first shell 200 with an opening facing downward and a second shell 400 with an opening facing upward. The first shell 200 and the second shell 400 may be fixedly assembled together by a first bolt 410 and a first nut 240 after the openings of the first shell 200 and the second shell 400 are opposite to each other to form an integral installation shell. The first shell 200 and the second shell 400 may both adopt a claw structure, and the claws between the two shells correspond to each other, and the claws are provided with screw holes for installing the first bolt 410. During installation, the claws of the two shells may be connected and fixed by the first bolt 410 and the first nut 240 after the claws of the two shells are opposite to each other. At the same time, the upper end of the first shell 200 is fixedly connected to the spherical crown foam plate 110. For example, a second bolt 220 may be fixedly provided at the upper end of the first shell 200, and a through hole for matching the second bolt 220 is provided in the middle of the spherical crown foam plate 110. After the top of the second bolt 220 passes through the through hole, the spherical crown foam plate 110 is fixed to the first shell 200 by the second nut 210, thereby realizing a fixed connection between the spherical crown foam plate 110 and the first shell 200.

[0033] In some of the embodiments, the friction nano power generation component also includes a connecting shaft 323 connected to the cylindrical acrylic barrel 310; the connecting shaft 323 can be elastically installed in the cylindrical acrylic barrel 310 along its own axis, and the connecting shaft 323 movably passes through the first electrode plate 360 ​​and is fixedly passed through the second electrode plate 370.

[0034] In the above embodiment, a specific installation structure of the second electrode plate 370 is provided. Among them, the elastic connection between the second electrode plate 370 and the cylindrical acrylic barrel 310 is mainly realized by the connecting shaft 323. Through holes are provided in the middle of the first electrode plate 360 ​​and the second electrode plate 370. The through hole of the first electrode plate 360 ​​is larger and can be passed through by the connecting shaft 323 without contact, so that the movement of the first electrode plate 360 ​​and the connecting shaft 323 does not interfere with each other, while the through hole of the second electrode plate 370 is smaller and needs to be fixedly sleeved on the connecting shaft 323 to realize a rigid connection with the connecting shaft 323. Since the connecting shaft 323 is elastically connected to the cylindrical acrylic barrel 310, the elastic connection between the second electrode plate 370 and the cylindrical acrylic barrel 310 is realized.

[0035] For the rigid connection between the first electrode plate 360 ​​and the cylindrical acrylic barrel 310, the outer wall of the first electrode plate 360 ​​can be directly fixedly connected to the inner wall of the cylindrical acrylic barrel 310, for example, by bonding, interference fit buckle or bolts and screws. Alternatively, a screw rod is used, one end of which is fixedly connected to the cylindrical acrylic barrel 310, and the outer side of the first electrode plate 360 ​​is fixedly connected to the screw rod through a nut.

[0036] Reference Figure 6 , for the rigid connection between the second electrode plate 370 and the connecting shaft 323, specifically, the two ends of the connecting shaft 323 are respectively fixedly sleeved with limiters 321, and the middle part of the connecting shaft 323 is movably sleeved with multiple limit rings 322, and the limit rings 322 are movably inserted through the first electrode plate 360, and the second electrode plate 370 and the limit rings 322 are alternately arranged; under the limiting action of the two limiters 321, the relative positions of the second electrode plate 370 and the limit rings 322 on the connecting shaft 323 are fixed. Among them, the diameter of the through hole in the middle of the second electrode plate 370 should be smaller than the diameter of the limit ring 322, so that the limit ring 322 can resist the second electrode plate 370. Under the limiting action of the two limiters 321, the relative positions of the second electrode plate 370 and the limit ring 322 on the connecting shaft 323 are limited, thereby realizing the rigid connection between the second electrode plate 370 and the connecting shaft 323. Meanwhile, the length of the limiting ring 322 determines the distance between two adjacent second electrode plates 370. Of course, other methods can also be used to achieve the rigid connection between the second electrode plate 370 and the connecting shaft 323, such as bonding, interference fit buckle or bolts and screws.

[0037] As for the elastic connection between the connecting shaft 323 and the cylindrical acrylic barrel 310, specifically, the bottom wall of the cylindrical acrylic barrel 310 has a cylindrical depression, one end of the connecting shaft 323 extends into the cylindrical depression and is connected to the bottom wall of the cylindrical depression through the first spring 326. One end of the connecting shaft 323 extends into the cylindrical depression, and the diameter of the cylindrical depression matches the diameter of the connecting shaft 323, so that the cylindrical depression has a limiting effect on the connecting shaft 323, limiting it to only move along its own axial direction, and at the same time, the elastic connection between the connecting shaft 323 and the cylindrical acrylic barrel 310 is realized through the first spring 326. Alternatively, a linear bearing 324 is installed at the end of the connecting shaft 323, and the linear bearing 324 is fixedly installed in the cylindrical depression, which can also play a limiting role on the connecting shaft 323, and will not affect the axial movement of the connecting shaft 323.

[0038] As for the specific structure of the first electrode plate 360 ​​and the second electrode plate 370, the first electrode plate 360 ​​is composed of a friction layer 362 of a triboelectric material, a metal electrode conductive layer 363, a first substrate 364, a metal electrode conductive layer 363 and a friction layer 362 of a triboelectric material in sequence. Among them, the first substrate 364 is in the middle, and the metal electrode conductive layer 363 and the triboelectric material friction layer 362 are symmetrically arranged on both sides. The second electrode plate 370 is composed of a metal electrode conductive friction layer 372, a flexible buffer layer 373, a second substrate 374, a flexible buffer layer 373, and a metal electrode conductive friction layer 372 in sequence. Among them, the second substrate 374 is in the middle, and the flexible buffer layer 373 and the metal electrode conductive friction layer 372 are symmetrically distributed on both sides. The metal electrode conductive layer 363 and the metal electrode conductive friction layer 372 are connected to both ends of the external load. When the distance between the first electrode plate 360 ​​and the second electrode plate 370 changes, electrostatic induction generates a potential difference between the triboelectric material friction layer 362 and the metal electrode conductive friction layer 372 , and charges are transferred from the external circuit, thereby generating current output.

[0039] In the above embodiments, the specific structure of the friction nano power generation component is mainly provided, and other specific structures can also be adopted accordingly.

[0040] In other embodiments, there are two first electrode plates 360 and they are rigidly installed in the cylindrical acrylic barrel 310, and at least one second electrode plate 370 is located between the two first electrode plates 360; the two adjacent electrode plates are connected by a second spring. In this embodiment, the connecting shaft 323 is not required. The two first electrode plates 360 located at the uppermost and lowermost ends are directly fixedly connected to the cylindrical acrylic barrel 310, and the fixed connection method can be the same as the connection method between the first electrode plate 360 ​​and the cylindrical acrylic barrel 310 in the previous embodiment, while the multiple second electrode plates 370 located between the two first electrode plates 360 are not fixedly connected to the cylindrical acrylic barrel 310, but are connected to each other or to the first electrode plates 360 through the second spring 380. Therefore, in the process of the bionic jellyfish structure 100 absorbing wave energy to drive the installation shell and the cylindrical acrylic barrel 310 to move up and down, the movement amplitude between the second electrode plate 370 and the first electrode plate 360 ​​is different, and the movement amplitude between each first electrode plate 360 ​​is also different, and then the spacing between each electrode plate is changing, then the friction nano power generation component 300 can realize power generation based on the contact separation method.

[0041] In this embodiment, the first electrode plate 360 ​​mainly includes a first substrate 364, and a flexible sponge and a metal electrode are sequentially arranged on one side of the first substrate 364 close to the second electrode plate 370. The second electrode plate 370 mainly includes a second substrate 374, and a flexible sponge and a metal electrode are sequentially arranged symmetrically on both sides of the second substrate 374.

[0042] As described above, at least one embodiment of each part of the bionic jellyfish-based hydroelectric generator provided by the present invention has been described separately. It should be noted that the various parts of the bionic jellyfish-based hydroelectric generator can be combined in different embodiments to form different embodiments of the bionic jellyfish-based hydroelectric generator.

[0043] For example, refer to Figure 1 In a specific overall embodiment, the hydroelectric generator based on bionic jellyfish includes: a floating structure (bionic jellyfish structure 100) for collecting wave energy, an upper fixed structure (first shell 200), a power generation structure (friction nano power generation component 300), and a lower fixed structure (second shell 400). The floating structure, the upper fixed structure, and the lower fixed structure firmly fix the power generation structure therein.

[0044] Reference Figure 2The floating structure is mainly composed of a spherical crown foam plate 110 and an annular rubber sheet (annular elastic sheet 120). As a flexible structure, the rubber sheet can well capture the huge energy of the crest and trough of the wave. The floating structure has more advantages in collecting energy with specific wave distribution. In order to fix the floating structure with the upper fixed structure, a through hole is opened on the top of the foam plate. The floating structure and the upper fixed structure can be firmly fixed together by the second bolt 220 and the second nut 210.

[0045] Reference Figure 3 and Figure 4 A through hole is formed on the top of the upper fixing structure to allow the second bolt 220 to pass through, and then the second bolt 220 passes through the foam board 110 and is connected with the second nut 210. Five through holes are formed on the claw structure below the upper fixing structure, and the upper fixing structure and the lower fixing structure are fixed together through the through holes using the first bolt 410 and the first nut 240.

[0046] Reference Figure 4 The lower fixing structure has five through holes corresponding to the upper fixing structure, and a cylindrical recess 420 is also opened at the bottom to embed the small acrylic bucket 350 in the internal power generation structure.

[0047] Reference Figure 5 and Figure 6 , the power generation structure consists of a cylindrical acrylic barrel 310, a small acrylic barrel 350 (arranged at the bottom of the cylindrical acrylic barrel 310 and connected to the cylindrical acrylic barrel 310, forming a cylindrical depression on the bottom wall of the cylindrical acrylic barrel 310), a central axis system 320, a fixing bolt 330, a fixing nut 340, a fixed plate (first electrode plate 360) and a moving plate (second electrode plate 370). The cylindrical acrylic barrel 310 and the small acrylic barrel 350 completely wrap the internal multi-layer power generation unit. Among them, the axis system 320 is mainly composed of an iron shaft (connecting shaft 323), a small acrylic circular plate 325, a first spring 326, a linear bearing 324, a limiter 321 and a limit ring 322. The power generation unit is a multi-layer TENG with same frequency contact and separation. The fixing bolts 330 and the fixing nuts 340 fix the four fixed plate groups together. The stopper 321 and the stop ring 322 sandwich the three moving plates between the four fixed plates. The stop ring 322 is designed by 3D printing to design the length of the stop ring 322 to design the plate spacing between the moving plates. The linear bearing 324 ensures that the iron shaft will not deviate. In this way, the vibration of the spring can drive the three moving plates to move up and down together and contact and separate from the fixed plates.

[0048] Reference Figure 7 and Figure 8The first electrode plate 360 ​​is composed of a friction layer 362 of a triboelectric material, a metal electrode conductive layer 363, a first substrate 364, a metal electrode conductive layer 363 and a friction layer 362 of a triboelectric material in sequence. The second electrode plate 370 is composed of a metal electrode conductive friction layer 372, a flexible buffer layer 373, a second substrate 374, a flexible buffer layer 343 and a metal electrode conductive friction layer 372 in sequence. The metal electrode conductive layer 363 and the metal electrode conductive friction layer 372 are connected to both ends of the external load. When the distance between the electrode plate 360 ​​and the electrode plate 370 changes, electrostatic induction generates a potential difference between the friction layer 362 of the triboelectric material and the metal electrode conductive friction layer 372, and the charge is transferred from the external circuit, thereby generating a current output.

[0049] The present invention also provides a self-powered ocean monitoring system, including a monitoring sensor and a hydroelectric generator based on a bionic jellyfish provided by the present invention, wherein the hydroelectric generator supplies power to the monitoring sensor. Specifically, when the hydroelectric generator is excited by waves, the internal friction nano-power generation component works, converts mechanical energy into electrical energy, which is then processed and stored by a power management circuit, and supplies power to the monitoring sensor and a wireless signal sending device. The signal is sent by the wireless signal sending device to a terminal device, thereby realizing self-powered remote roadside monitoring and early warning. The monitoring sensor can be a water quality sensor, a temperature sensor, etc.

[0050] In some embodiments, the self-powered ocean monitoring system further includes a warning device, and the hydroelectric generator also supplies power to the warning device. The warning device may be a warning light, and thus the self-powered ocean monitoring system can simultaneously realize on-site monitoring and early warning functions.

[0051] In summary, the present invention provides a self-powered device of a bionic jellyfish-type friction nanogenerator based on the bionics principle, comprising:

[0052] The bionic jellyfish-shaped structure consists of arc-shaped foam, rubber sheets, 3D printed shells, bolts, nuts and acrylic cylindrical barrels. The foam and rubber sheets form the floating structure of the generator. With the excitation of the waves, the rubber sheets in the floating structure better fit the waves, thereby increasing the vibration displacement and longitudinal acceleration of the generator.

[0053] The multi-layer same-frequency contact-separation TENG is composed of a substrate, copper electrodes, FEP (perfluoroethylene propylene copolymer) film, hexagonal bolts, hexagonal nuts, iron shafts, etc. Four substrates connected in series by three hexagonal bolts and fixed by multiple hexagonal nuts are used as fixed plates, and three substrates connected in series by iron shafts and fixed by limiters are used as moving plates. The moving plates and fixed plates are alternately stacked to form six pairs of TENGs in contact-separation mode.

[0054] The internal braking device is composed of a spring, an iron shaft and a small acrylic circular plate. When the external wave excites, inertial force and acceleration are generated inside. At this time, the inertial force is converted into elastic potential energy, and then the elastic potential energy drives the three moving plates connected in series by the iron shaft to move up and down violently.

[0055] Based on the above-mentioned self-powered device, the present invention also provides a self-powered temperature monitoring method. When the self-powered device is excited by waves, the generator drives the multi-layer TENG to generate electricity with the ups and downs of the waves and the vibration of the internal spring. After the mechanical energy is converted into electrical energy, it is processed and stored by the power management circuit, and the temperature sensor device is powered to realize self-powered temperature monitoring.

[0056] Based on the above-mentioned self-powered device, the present invention also provides a self-powered water quality monitoring strategy. When the self-powered device is excited by waves, the vibration and swing of the jellyfish shell causes the spring to drive the internal TENG unit. After the mechanical energy is converted into electrical energy, it is processed and stored by the power management circuit, and the water quality sensor equipment and the wireless signal sending device are powered. The signal is sent to the terminal device by the wireless transmission module, realizing self-powered remote roadside monitoring and early warning.

[0057] Beneficial effects of the present invention:

[0058] 1. A bionic jellyfish-type friction nanogenerator self-powered device based on the principle of bionics is proposed to collect low-frequency wave energy and generate a larger vibration amplitude through the unique bionic jellyfish shape. The characteristics of TENG suitable for low-frequency excitation are used to efficiently convert low-frequency mechanical energy into electrical energy output.

[0059] 2. A bionic jellyfish-type friction nanogenerator self-powered device based on bionic principles is proposed to collect low-frequency wave energy and generate a larger vibration amplitude through the unique bionic jellyfish shape. External excitation drives the internal multi-layer stacked spring TENG structure to contact and separate, efficiently converting low-frequency mechanical energy into electrical energy output.

[0060] 3. Based on the above self-powered device, a self-powered water quality monitoring strategy and a self-powered warning light strategy are proposed. The present invention provides a more complete implementation plan for TENG in the application field of self-powered intelligent waters, and has broad application prospects in the field of distributed low-frequency wave energy collection and utilization.

[0061] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0062] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

Claims

1. A hydroelectric generator based on bionic jellyfish, characterized in that: It includes a bionic jellyfish structure, a mounting shell and a friction nano-power generation component; The bionic jellyfish structure comprises a spherical crown foam plate and an annular elastic sheet, wherein the inner side of the annular elastic sheet is connected to the outer side of the spherical crown foam plate; The spherical crown foam plate is fixedly connected to the top of the installation shell, and the friction nano power generation component is installed in the installation shell; The friction nano power generation component includes a plurality of spaced-apart electrode plates coaxial with the spherical crown foam plate, wherein the electrode plates are divided into a first electrode plate and a second electrode plate, wherein the first electrode plate is rigidly mounted in the mounting shell, and the second electrode plate is elastically mounted in the mounting shell, and the friction nano power generation component realizes power generation at least based on the contact and separation between the first electrode plate and the second electrode plate.

2. The hydroelectric generator based on bionic jellyfish according to claim 1, characterized in that: The friction nano power generation assembly also includes a cylindrical acrylic barrel coaxial with the spherical crown foam plate; The cylindrical acrylic barrel is a sealed structure and is fixedly installed in the installation shell. The first electrode plate is rigidly installed in the cylindrical acrylic barrel, and the second electrode plate is elastically installed in the cylindrical acrylic barrel.

3. The hydroelectric generator based on bionic jellyfish according to claim 2, characterized in that: The friction nano power generation assembly also includes a connecting shaft to the cylindrical acrylic barrel; The connecting shaft can be installed in the cylindrical acrylic barrel in a manner that allows the connecting shaft to be elastically movable along its own axis. The connecting shaft movably penetrates the first electrode plate and fixedly penetrates the second electrode plate.

4. The hydroelectric generator based on bionic jellyfish according to claim 3, characterized in that: The bottom wall of the cylindrical acrylic barrel has a cylindrical recess, and one end of the connecting shaft extends into the cylindrical recess and is connected to the bottom wall of the cylindrical recess through a first spring.

5. The hydroelectric generator based on bionic jellyfish according to claim 3, characterized in that: The two ends of the connecting shaft are respectively fixedly sleeved with limiters, and the middle part of the connecting shaft is movably sleeved with a plurality of limit rings, the limit rings movably penetrate the first electrode plate, and the second electrode plate and the limit rings are alternately arranged and abut against each other; Under the limiting action of the two limiters, the relative positions of the second electrode plate and the limiting ring on the connecting shaft are fixed.

6. The hydroelectric generator based on bionic jellyfish according to claim 2, characterized in that: There are two first electrode plates rigidly mounted in the cylindrical acrylic barrel, and at least one second electrode plate is located between the two first electrode plates; Two adjacent electrode plates are connected via a second elastic connection.

7. The hydroelectric generator based on bionic jellyfish according to claim 2 or 5, characterized in that: The installation shell is a split structure.

8. The hydroelectric generator based on bionic jellyfish according to claim 1, characterized in that: The ratio between the crown height and the curvature radius of the spherical crown shaped foam plate is between 0.015 and 0.

034.

9. The hydroelectric generator based on bionic jellyfish according to claim 1, characterized in that: The material of the annular elastic sheet is rubber; and / or the annular elastic sheet is an integrated structure.

10. A self-powered ocean monitoring system, characterized in that: The invention comprises a monitoring sensor and a bionic jellyfish-based hydroelectric generator according to any one of claims 1 to 8, wherein the hydroelectric generator supplies power to the monitoring sensor.

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