Wave force sensor based on friction nanometer generator and monitoring system
By adopting wave force sensors and wireless monitoring systems based on friction nanogenerators in marine engineering, the power supply, cost and real-time monitoring of wave force sensors in the prior art is solved, and efficient, real-time monitoring and early warning of wave force by marine engineering structures is achieved.
Patent Information
- Application Number
- CN202411934851.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2044-12-26
AI Technical Summary
The sensors used to monitor wave forces in existing marine engineering have problems such as long-term power supply demand, high costs and installation difficulties, and it is difficult to obtain the dynamic response changes of marine engineering structures in real time, and it is impossible to timely and effectively evaluate the catastrophic process.
The wave force sensor and wireless monitoring system based on friction nanogenerators are adopted, and the wave force received by the marine engineering structure is converted into electrical signals by using friction nanogenerators to realize self-power supply, and long-distance and real-time data transmission is achieved through Lora wireless communication technology.
It realizes long-term dynamic monitoring of wave power by marine engineering structures, and has the characteristics of easy maintenance, convenient installation, environmentally friendly and low cost. It can be timely warned and improves disaster prevention and mitigation capabilities.
Smart Images

Figure CN119935390A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of marine engineering disaster prevention and reduction, and specifically relates to a wave force sensor and a monitoring system based on a friction nanogenerator. Background Art
[0002] As global warming intensifies, extreme ocean dynamic disasters occur frequently, and the losses caused by catastrophic waves are serious. The demand for safety monitoring of marine engineering structures is becoming increasingly urgent. However, there are problems with existing sensors for monitoring wave forces. For example, piezoresistive sensors have long-term power supply requirements, and the cost and installation cost of optical fiber sensors are too high. In addition, the wired transmission technology currently used in marine engineering is difficult to obtain the dynamic response characteristics of marine engineering structures in real time, and cannot effectively evaluate the disaster process in a timely manner. Therefore, it is necessary to develop self-powered, low-cost, and easy-to-install wave force sensors and wireless monitoring systems.
[0003] Based on the electrification effect and electrostatic induction effect, the friction nanogenerator can effectively convert environmental energy into electrical energy. In recent years, it has attracted much attention in the fields of energy harvesting and self-powered sensing. In the four working modes of vertical contact separation, horizontal sliding, single electrode, and independent layer, the friction nanogenerator couples the friction electrification effect and the electrostatic induction effect to generate electrical signals. There are a wide range of materials to choose from and the structural design is diverse, which can meet the needs of environmental friendliness, strong environmental adaptability, and low cost. The development of wireless transmission technology also provides technical support for the present invention. The ability to transmit data over long distances and in real time is crucial for the dynamic monitoring of marine structures. As a relatively mature wireless transmission technology, Lora has become an ideal choice for various scenarios due to its advantages such as long-distance transmission, low power consumption, strong anti-interference, and easy installation.
[0004] The present invention aims to develop an underwater wave force sensor and wireless monitoring system based on a friction nanogenerator, which has the characteristics of easy maintenance, convenient installation, environmental friendliness and low cost. It can wirelessly transmit key wave data over long distances in real time and provide timely warnings, effectively improving the disaster prevention and mitigation capabilities of marine engineering. Summary of the invention
[0005] In order to overcome the deficiencies in the prior art, the present invention proposes a wave force sensor and a monitoring system based on a friction nanogenerator to achieve long-term dynamic monitoring of wave forces acting on marine engineering structures.
[0006] To achieve the above object, the present invention adopts the following technical solution: a wave force sensor based on a friction nanogenerator, the force sensor comprising:
[0007] The force-electric conversion and fixed support layer is composed of a hollow cylinder and a multi-layer hexagonal wall structure; the multi-layer hexagonal wall structure is concentrically arranged at the bottom center of the hollow cylinder, a first electrode is arranged on the wall surface, and a dielectric layer is arranged thereon;
[0008] The force sensing layer is composed of a disc, a paper-cut structure and a multi-layer hexagonal wall structure; the multi-layer hexagonal wall structure is concentrically arranged in the middle part of the disc, and a second electrode is arranged on the wall surface; the paper-cut structure is a hexagonal cutout arranged in concentric rings on the disc and outside the multi-layer hexagonal wall structure; the disc is fixedly connected to the annular surface at the top of the side wall of the hollow cylinder, and under the action of wave force, the multi-layer hexagonal wall structure cooperates with the multi-layer hexagonal wall structure to form a sliding friction nanogenerator, thereby realizing the conversion of force into electricity.
[0009] Furthermore, the force sensor also includes a waterproof layer, which has a concentric annular corrugated structure and is fixedly connected to the disc of the force sensing layer through a hexagonal side platform; the waterproof layer not only plays a waterproof role, but also can undergo greater deformation, has higher sensitivity, and effectively senses and transmits changes in external pressure without affecting the mechanical properties of the force sensing layer.
[0010] Furthermore, the paper-cut structure has an axially symmetrical and centrally symmetrical hexagonal incision, and concentric annular hexagons are arranged from the inside to the outside starting from the complete hexagon at the center, and the innermost layer is connected to the first outward layer by a connecting key of a certain width at the midpoint of the hexagonal edge, and the remaining part is hollowed out to form an incision, the first outward layer is connected to the second outward layer by a connecting key of a certain width at the vertices of the hexagons, and the remaining part is hollowed out to form an incision, the second outward layer is connected to the third outward layer by a connecting key of a certain width at the midpoint of the hexagonal edge, and the remaining part is hollowed out to form an incision, and so on; the paper-cut structure can produce a buckling response due to the release of internal stress when subjected to external force, produce deformation in three-dimensional space, and rebound itself after the external force disappears.
[0011] Furthermore, the force sensing layer and the force-to-electric conversion and fixed support layer all have a multi-layer hexagonal wall structure; for a single multi-layer hexagonal wall structure, it is arranged in a concentric ring shape, with walls of the same height and the same number of layers, the wall thickness of each layer of the wall is consistent, and the interval between each layer of the wall is consistent; when the multi-layer hexagonal wall slides into the multi-layer hexagonal wall, there is a certain distance between adjacent walls, and the wall thickness of each layer of the multi-layer hexagonal wall is less than the wall thickness of each layer of the multi-layer hexagonal wall; the multi-layer hexagonal wall structure allows the force-to-electric conversion and the fixed support layer to slide relative to each other when the force sensing layer is deformed, and cooperates to form a friction nanogenerator based on the principle of sliding friction to achieve force-to-electricity conversion.
[0012] Furthermore, strong magnetic circular micro magnets are arranged every 60° on the bottom surface of the hollow cylinder between the hollow cylindrical wall surface of the force-to-electricity conversion and fixed support layer and the outermost wall surface of the multi-layer hexagonal surrounding wall structure with the center of the circle as the reference, so as to firmly attach the force sensor to the surface of the marine engineering structure made of magnetic materials.
[0013] Furthermore, the force sensors are distributed in a linear array along the bottom of the water and in a circular array around the marine engineering structure when used.
[0014] Furthermore, when periodic waves act on the marine engineering structure, the wave force on the marine engineering structure changes, and the force sensing layer undergoes a process of stretching deformation and recovery deformation. During this process, the dielectric layer on the force sensing layer and the first electrode on the force-electric conversion and fixed support layer slide relative to each other, charge transfer occurs, and a voltage signal is generated. The magnitude of the inversion force is inferred based on the force-electric response relationship.
[0015] On the other hand, the present invention also provides a wave force monitoring system based on a friction nanogenerator, the system comprising a data acquisition module composed of a force sensor array, a data transmission module, and a data processing and early warning module;
[0016] The data acquisition module is a sensor array that is linearly distributed and circumferentially distributed along the bottom direction and along the circumference direction of the structure respectively;
[0017] The data transmission module is connected to the data acquisition module via a wired cable to transmit the collected voltage signal to the data processing and early warning module on the terminal server;
[0018] The data processing and early warning module processes the data sent by the data transmission module, determines the structural bearing state, and issues an early warning when multiple thresholds are triggered continuously according to preset thresholds.
[0019] Furthermore, the data transmission module is composed of a wireless transmission chip, a low-power wireless transmission module, a switch, and a power supply device;
[0020] When the power supply is turned on by the power supply device, the low-power wireless transmission chip modulates and demodulates the signal through the communication protocol, and the low-power wireless transmission module transmits the voltage signal collected by the data acquisition module to the data processing and early warning module wirelessly and in real time for analysis and processing and timely early warning.
[0021] Furthermore, the data processing and early warning module presets a threshold value according to the relationship between the voltage signal and the force, and issues an early warning when the collected signal exceeds a certain threshold value and is triggered multiple times.
[0022] Beneficial effects of the present invention: Compared with the existing sensors for monitoring wave forces, the present invention uses friction nanogenerators to efficiently convert the periodic wave forces on marine engineering structures into electrical signals, realizing self-powered energy without the need for additional batteries or power supplies; the design of the force sensing layer enables it to have high tensile properties and the ability to resist large deformations, and the structural design of the force-to-electric conversion and fixed support layer ensures that the sensor responds accurately and sensitively when subjected to external forces, thereby realizing accurate monitoring of wave forces; the materials selected are low-cost silicone rubber and PLA to reduce costs; strong magnetic micro-magnets are arranged to be adsorbed on ferromagnetic marine engineering structures, making installation simple and convenient. The present invention realizes long-distance and real-time data transmission through the Lora wireless communication technology adopted by the data transmission module, ensuring long-term dynamic monitoring of marine engineering structures subjected to wave forces. The data processing and early warning module can process and analyze the collected data in real time, and once the wave force is detected to exceed the preset safety threshold, an early warning signal will be issued immediately, providing timely feedback and intervention for the safe operation of marine engineering structures. Through real-time monitoring and early warning mechanisms, this system can effectively prevent damage or accidents to marine engineering structures caused by abnormal wave forces, and has important practical application value in the field of marine engineering disaster prevention and mitigation. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the working scene of the present invention;
[0024] Figure 2 It is a schematic diagram of the waterproof layer structure of the sensor in the present invention;
[0025] Figure 3 It is a schematic diagram of the force sensing layer structure of the sensor in the present invention;
[0026] Figure 4 It is a schematic diagram of the force-electricity conversion and bottom support layer structure of the sensor in the present invention.
[0027] Figure 5 It is a diagram showing the internal structure of the data transmission module in the present invention.
[0028] Figure 6 This is the force-displacement curve of the force sensing layer in the actual object of this patent during static loading and unloading.
[0029] Figure 7 It is the voltage signal generated by the patented object when working in air and water.
[0030] Among them, 1. waterproof layer; 2. force sensing layer; 3. force-electric conversion and fixed support layer; 4. data acquisition module; 5. data transmission module; 6. data processing and early warning module; 7. wired cable; 101. concentric annular corrugations; 102. hexagonal side platform; 201. circular disc of a certain thickness; 202. paper-cut structure of force sensing layer; 203. multi-layer hexagonal wall structure of force sensing layer; 204. electrode of force sensing layer; 205. dielectric layer of force sensing layer; 301. hollow cylinder with open top; 302. multi-layer hexagonal wall structure of force-electric conversion and fixed support layer; 303. electrode of force-electric conversion and fixed support layer; 304. strong magnetic circular micro magnet; 501. circuit board; 502. wireless transmission chip; 503. low-power wireless transmission module; 504. switch; 505. sensor multi-channel interface; 506. power supply device DETAILED DESCRIPTION
[0031] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.
[0032] like Figure 1 As shown, the present invention provides a wave force sensor and monitoring system based on a friction nanogenerator. The sensor is an integrated structure, including a waterproof layer 1, a force sensing layer 2, and a force-electric conversion and fixed support layer 3. The sensors are distributed in a linear array along the bottom direction and in a circular array around the marine engineering structure (such as a pile column). The sensor array constitutes a data acquisition module 4. When the engineering structure is subjected to periodic waves, the wave force first acts on the waterproof layer 1. The waterproof layer 1 plays a waterproof and force transmission role while not affecting the force of the force sensing layer 2. After the force sensing layer 2 senses the change in wave force, the structure undergoes downward pressure deformation and rebound deformation, and forms a sliding friction nanogenerator with the lower force-electric conversion and fixed support layer 3 to generate an electrical signal. The sensor array has a built-in magnet and is fixed to the engineering structure of ferromagnetic materials by magnetic attraction. The waterproof layer 1, the force sensing layer 2, and the force-electric conversion and fixed support layer 3 are fixedly connected around and coated with epoxy resin for sealing and waterproofing. The sensor array is connected to the data transmission module 5 through a wired cable 7, and the collected voltage signal is transmitted to the data processing and early warning module 6 by Lora wireless communication. The data processing and early warning module 6 is arranged in the server terminal, and processes the voltage signal sent by the data transmission module 5 and visualizes it in real time. When the wave force value analyzed by the data processing and early warning module 6 triggers the preset safety threshold value for many times in succession, the early warning mechanism will be automatically triggered, and the operator will be reminded to take corresponding safety measures by means of sound and light signals or remote notification. The system continuously monitors the wave force changes of the marine engineering structure and periodically updates the data to ensure the continuity and accuracy of the monitoring data. A user interface is provided to allow operators to view historical data, real-time data and early warning records, and to configure and adjust system parameters.
[0033] Figure 2 The structure of the waterproof layer 1 is shown. The material is a silicone rubber material with a Shore hardness of 30 and is manufactured using a complex molding process. It is designed as a circular diaphragm with concentric annular corrugations 101. The helical bosses 102 around it are fixedly connected to the force sensing layer 2. The function of the waterproof layer 1 is to prevent water from entering the sensor, transmit wave force, and not affect the force on the force sensing layer 2.
[0034] Figure 3 The structure of the force sensing layer 2 is shown. The material is a silicone rubber material with a Shore hardness of 70, which is manufactured by a complex molding process. The upper part is a disc 201 with a certain thickness. There are hexagonal cuts around the upper part to form a paper-cut structure 202 of the force sensing layer 2, thereby improving the strain sensitivity and anti-deformation ability of the force sensing layer 2. A multi-layer hexagonal wall structure 203 is connected to the center of the upper part, and copper foil is attached to the wall as an electrode 204, and PTFE is used as a dielectric layer 205.
[0035] The paper-cut structure 202 has an axially symmetrical and centrally symmetrical hexagonal incision, and concentric annular hexagons are arranged from the inside to the outside starting from the complete hexagon at the center, and the innermost layer is connected to the first outward layer by a connecting key of a certain width at the midpoint of the hexagonal edge, and the remaining part is hollowed out to form an incision, the first outward layer is connected to the second outward layer by a connecting key of a certain width at the hexagonal vertices, and the remaining part is hollowed out to form an incision, the second outward layer is connected to the third outward layer by a connecting key of a certain width at the midpoint of the hexagonal edge, and the remaining part is hollowed out to form an incision, and so on; by introducing incisions on the elastic material, the material properties are optimized, especially the shortcomings of traditional elastic thin plates such as small longitudinal deformation and easy fatigue are improved. By introducing an axisymmetric and centrally symmetrical paper-cut structure, the structure has excellent deformation capacity. It can produce a buckling response due to the release of internal stress when subjected to external force, produce a large deformation in three-dimensional space, and rebound itself after the external force disappears. Therefore, the sensor has the ability to deform in response to sensitive changes in wave force, self-recover, and resist large deformation caused by loads.
[0036] Both the force sensing layer 2 and the force-electric conversion and fixed support layer 3 have a multi-layer hexagonal wall structure; for a single multi-layer hexagonal wall structure, it is characterized by a concentric ring arrangement, walls of the same height and number of layers, the same thickness of each layer of walls, and the same spacing between each layer of walls; but comparing the multi-layer hexagonal wall structure 203 of the force sensing layer 2 and the multi-layer hexagonal wall structure 302 of the force-electric conversion and fixed support layer 3, in order to enable the force sensing layer 2 to slide in and out of the force-electric conversion and fixed support layer 3 continuously and without jamming when the longitudinal deformation is subjected to external force, there should be a certain spacing between the adjacent walls when the multi-layer hexagonal wall 203 slides into the multi-layer hexagonal wall 302, and the wall thickness of each layer of the multi-layer hexagonal wall 302 should be less than the wall thickness of each layer of the multi-layer hexagonal wall 203. In addition, the height and number of layers of the two are consistent. It is precisely because of the multi-layer hexagonal wall structure that the force-to-electricity conversion is allowed to occur relative sliding with the fixed support layer 3 when the force sensing layer 2 is deformed, thereby forming a friction nanogenerator based on the sliding friction principle to achieve force-to-electricity conversion.
[0037] Figure 4 The structure of the force-electric conversion and fixed support layer 3 is shown. The material is PLA material, and the structure is a hollow cylinder 301 with an open top. The bottom center of the hollow cylinder has a multi-layer hexagonal wall structure 302. The number of layers is consistent with the multi-layer hexagonal wall structure 203 of the force sensing layer. The size of each layer of the wall is slightly narrower than that of the multi-layer hexagonal wall structure, allowing the force sensing layer 2 to slide in and separate when it is pressed down and rebounds. Copper foil is attached to the wall surface of the wall structure 302 as an electrode 303. In the first stage, the force sensing layer 2 and the force-electric conversion and fixed support layer 3 are completely separated. Due to the difference in electronegativity, the electrode 204 of the force sensing layer 2 and the dielectric layer 205 have equal and opposite charges on the surface. Since the electronegativity of PTFE is higher than that of copper foil, the surface of the dielectric layer 205 is negatively charged, and the surface of the electrode 204 is positively charged. In the second stage, the force sensing layer 2 presses down when sensing the action of waves, and the multi-layer hexagonal wall structure 203 slides into the multi-layer hexagonal wall structure 302 of the force-to-electric conversion and fixed support layer 3. During the relative sliding process, due to the free electrons in the external circuit flowing from the electrode 303 to the electrode 204, a positive charge is generated on the surface of the electrode 303 to balance the potential difference. In the third stage, when the dielectric layer 205 is in full contact with the electrode 303, the charge is completely transferred. In the fourth stage, the force sensing layer 2 rebounds, and the multi-layer hexagonal wall structure 203 slowly separates from the multi-layer hexagonal wall structure 302 of the force-to-electric conversion and fixed support layer 3, and the charge begins a round of reverse transfer, generating an opposite output signal. Therefore, as the force sensing layer 2 periodically slides into the structure of the force-to-electric conversion and fixed support layer 3 under the action of periodic waves, the sensor outputs a periodic alternating voltage signal. A strong circular micro magnet 304 is arranged at every 60° on the bottom of the open-top hollow cylinder 301 with the center of the circle as the reference, so as to achieve adsorption and fixation of the sensor to the marine engineering structure and facilitate installation.
[0038] Figure 5 The figure shows the internal structure of the data transmission module 5, which basically includes a circuit board 501, a wireless transmission chip 502, a low-power wireless transmission module 503, a switch 504, a sensor multi-channel interface 505, and a power supply device 506. The sensor is connected to the sensor multi-channel interface 505 via a wired cable 7, and the switch 504 is turned on, and the power supply device 506 starts to supply power to the low-power circuit. The data collected by the sensor is modulated and demodulated by the Lora communication protocol at the wireless transmission chip 502, and is wirelessly and real-timely transmitted to the data processing and early warning module 6 by the low-power wireless transmission module 503. The circuit board 501 combines various electronic components into an integrated circuit.
[0039] Figure 6 The figure shows the force-displacement curve of the force sensing layer 2 in the actual object of this patent during static loading and unloading. The thickness of this object is 5 mm, but the maximum deformation can reach 25 mm, indicating that the force sensing layer 2 can resist a large deformation with a deformation rate of 500%, and can return to its original state after unloading. Figure 7 The voltage signal generated by the actual object of this patent working in the air and in water is shown, indicating that the structural design has the ability to work stably in the air and in water.
[0040] The above embodiments are used to illustrate the present invention rather than to limit the present invention. Any modification and change made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.
Claims
1. A wave force sensor based on a friction nanogenerator, characterized in that: The force sensor includes: The electromechanical conversion and fixing support layer (3) is composed of a hollow cylinder (301) and a multi-layer hexagonal surrounding wall structure (302); the multi-layer hexagonal surrounding wall structure (302) is arranged in a concentric ring shape at the bottom center of the hollow cylinder (301), a first electrode (204) is arranged on the wall surface, and a dielectric layer (205) is arranged thereon; The force sensing layer (2) is composed of a disc (201), a paper-cut structure (202) and a multi-layer hexagonal wall structure (203); the multi-layer hexagonal wall structure (203) is arranged in a concentric ring shape in the middle part of the disc (201), and a second electrode (303) is arranged on the wall surface; the paper-cut structure (202) is a hexagonal cutout arranged in a concentric ring shape on the disc (201) and outside the multi-layer hexagonal wall structure (203); the disc (201) is fixedly connected to the annular surface at the top of the side wall of the hollow cylinder (301), and under the action of wave force, the multi-layer hexagonal wall structure (203) cooperates with the multi-layer hexagonal wall structure (302) to form a sliding friction nanogenerator, thereby realizing force-electricity conversion.
2. A wave force sensor based on a friction nanogenerator according to claim 1, characterized in that: The force sensor further comprises a waterproof layer (1), the waterproof layer (1) having a concentric annular corrugated (101) structure, and being fixedly connected to the disc (201) of the force sensing layer (2) via a hexagonal side table (102); the waterproof layer not only plays a waterproof role, but is also capable of greater deformation, has a higher sensitivity, and can effectively sense and transmit external pressure changes without affecting the mechanical properties of the force sensing layer (2).
3. A wave force sensor based on a friction nanogenerator according to claim 1, characterized in that: The paper-cut structure (202) has an axisymmetric and center-symmetrical hexagonal cutout, and concentric annular hexagons are arranged from the inside to the outside starting from the complete hexagon at the center, and the innermost layer and the first outward layer are connected by connecting keys of a certain width at the midpoints of the hexagonal edges, and the remaining parts are hollowed out to form the cutouts, the first outward layer and the second outward layer are connected by connecting keys of a certain width at the vertices of the hexagonal edges, and the remaining parts are hollowed out to form the cutouts, the second outward layer and the third outward layer are connected by connecting keys of a certain width at the midpoints of the hexagonal edges, and the remaining parts are hollowed out to form the cutouts, and so on; the paper-cut structure can produce a buckling response due to the release of internal stress when subjected to external force, produce deformation in three-dimensional space, and rebound itself after the external force disappears.
4. A wave force sensor based on a friction nanogenerator according to claim 1, characterized in that: The force sensing layer (2) and the force-electric conversion and fixed support layer (3) both have a multi-layer hexagonal wall structure; a single multi-layer hexagonal wall structure is arranged in a concentric ring shape, has walls of the same height and number of layers, the wall thickness of each layer of the wall is consistent, and the spacing between each layer of the wall is consistent; when the multi-layer hexagonal wall (203) slides into the multi-layer hexagonal wall (302), there is a certain spacing between adjacent walls, and the wall thickness of each layer of the multi-layer hexagonal wall (302) is less than the wall thickness of each layer of the multi-layer hexagonal wall (203); the multi-layer hexagonal wall structure allows the force-electric conversion and the fixed support layer (3) to slide relative to each other when the force sensing layer (2) is deformed, and cooperates to form a friction nanogenerator based on the sliding friction principle to achieve force-electricity conversion.
5. The wave force sensor based on a friction nanogenerator according to claim 1, characterized in that: Strong magnetic circular micro magnets (304) are arranged on the bottom surface of the hollow cylinder (301) between the wall surface of the force-electric conversion and fixing support layer (3) and the outermost wall surface of the multi-layer hexagonal surrounding wall structure (302) at intervals of 60° with the center of the circle as the reference, so as to firmly attach the force sensor to the surface of the marine engineering structure made of magnetic material.
6. A wave force sensor based on a friction nanogenerator according to claim 1, characterized in that: When used, the force sensors are distributed in a linear array along the bottom of the water and in a circular array around the marine engineering structure.
7. A wave force sensor based on a friction nanogenerator according to claim 1, characterized in that: When periodic waves act on the marine engineering structure, the wave force on the marine engineering structure changes, and the force sensing layer (2) undergoes a process of stretching deformation and recovery deformation. During this process, the dielectric layer (205) on the force sensing layer (2) and the first electrode (204) on the force-electric conversion and fixed support layer (3) slide relative to each other, charge transfer occurs, and a voltage signal is generated. The magnitude of the inversion force is derived based on the force-electric response relationship.
8. A wave force monitoring system based on a wave force sensor based on a triboelectric nanogenerator according to any one of claims 1 to 7, characterized in that: The system comprises a data acquisition module (4) composed of a force sensor array, a data transmission module (5) and a data processing and early warning module (6); The data acquisition module (4) is a sensor array which is linearly distributed and circumferentially distributed along the bottom direction and along the circumference direction of the structure respectively; The data transmission module (5) is connected to the data acquisition module (4) via a wired cable (7) to transmit the collected voltage signal to the data processing and early warning module (6) on the terminal server; The data processing and early warning module (6) processes the data sent by the data transmission module (5), determines the structural bearing state, and issues an early warning when the threshold is triggered multiple times continuously according to a preset threshold.
9. The wave force monitoring system according to claim 8, characterized in that: The data transmission module (5) is composed of a wireless transmission chip (502), a low-power wireless transmission module (503), a switch (504), and a power supply device (506); When the power supply of the power supply device (506) is turned on, the switch (504) is turned on, and the low-power wireless transmission chip (502) modulates and demodulates the signal through the communication protocol. The low-power wireless transmission module (503) transmits the voltage signal collected by the data collection module (4) to the data processing and early warning module (6) in a wireless and real-time manner for analysis and processing and timely early warning.
10. The wave force monitoring system according to claim 8, characterized in that: The data processing and early warning module (6) presets a threshold value according to the relationship between the voltage signal and the force, and issues an early warning when the collected signal exceeds a certain threshold value and is triggered multiple times.
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