Self-powered multifunctional wireless sensing system based on wind-powered triboelectric nanogenerator

Abstract

The present invention discloses a self-powered multifunctional wireless sensing system based on a wind-powered triboelectric nanogenerator. The system comprises a self-powered module equipped with a wind-powered triboelectric nanogenerator capable of generating alternating current, a support base, and a triboelectric generating assembly fixedly mounted on the support base. The triboelectric generating assembly comprises a wind-powered rotating mechanism, a FEP film sleeve, a first and a second power-generating copper electrode group, both of which are fixedly attached to the outside of a fixed cylinder, the FEP film sleeve being sleeved onto the outside of the first and second power-generating copper electrode groups, and a wind-powered rotating mechanism being slidably sleeved onto the outside of the FEP film sleeve. The wind-powered rotating mechanism houses two copper foils, a wireless sensing module electrically connected to the first power-generating copper electrode group, and a wired power supply module electrically connected to the second power-generating copper electrode group. The present invention can simultaneously power both the wireless and wired units, thereby improving the triboelectric nanogenerator's efficiency in utilizing wind energy.

Description

Technical Field

[0001] The present invention relates to the field of wireless sensing technology, and in particular to a self-powered multifunctional wireless sensing system based on a wind energy friction nanogenerator. Background Art

[0002] With the rapid development of the Internet of Things (IoT), we have entered the era of the Internet of Everything. Internet technology relies on a vast network of distributed sensors, which achieve intelligence through signal transmission between various information and communication devices. Consequently, this requires a vast number of distributed sensors as sensing terminals to detect and perceive the myriad information essential to human life and work. Powering these numerous distributed sensors has become a critical issue. However, current wireless sensor networks are mostly powered directly by batteries, and their operating time and lifespan are limited by battery condition. Considering that large numbers of distributed sensors are often deployed in locations such as mountains, rivers, and even in extreme natural environments, this undoubtedly increases the cost of battery maintenance and replacement.

[0003] To address battery cost issues, new energy harvesting technologies, such as electromagnetic, piezoelectric, and triboelectric mechanisms, have been proposed in recent years to enable self-powered wireless sensors by capturing energy from the surrounding environment. Triboelectric nanogenerators (TENGs) have made significant progress in environmental energy harvesting, demonstrating significant advantages such as flexible manufacturing material selection, low cost, and ease of processing. TENGs of varying structures can be used to effectively harvest renewable energy from wind, rivers, raindrops, and vibrations for self-powering sensor devices.

[0004] As a clean, renewable energy source, wind energy is currently the most promising renewable energy source due to its lower development and utilization costs than solar energy. Considering the large number of distributed sensors deployed in natural environments and the abundance of wind energy resources, building a self-powered wireless sensing system based on TENG technology has great application prospects.

[0005] However, the existing wind wireless sensing system based on friction nanogenerator has limited functions and can only work alone in wireless units or wired units, resulting in low wind energy utilization efficiency. Summary of the Invention

[0006] Based on this, it is necessary to address the above technical problems and provide a self-powered multifunctional wireless sensing system based on wind energy friction nanogenerator, which can power both wireless units and wired units at the same time, thereby improving the efficiency of wind energy utilization by friction nanogenerator.

[0007] The present invention provides a self-powered multifunctional wireless sensing system based on a wind-energy triboelectric nanogenerator, comprising:

[0008] A self-powered module equipped with a wind-powered tribo-nanogenerator capable of generating alternating current;

[0009] The wireless sensing module is electrically connected to the self-powered module and is used to wirelessly transmit the wireless signal carrying sensor-specific information generated by the alternating current generated by the wind-powered triboelectric nanogenerator and process it to generate target measurement parameters;

[0010] A wired energy supply module is electrically connected to the self-power supply module and is used to convert the AC power generated by the wind-powered triboelectric nanogenerator into DC power for storage to power low-power electronic devices;

[0011] The wind energy friction nanogenerator includes a support base and a friction power generation component fixedly assembled on the support base;

[0012] The support base is provided with a fixed cylinder, and the friction power generation assembly includes a wind energy rotating mechanism, an FEP film sleeve, a first power generation copper electrode group and a second power generation copper electrode group. The first power generation copper electrode group and the second power generation copper electrode group are both fixedly attached to the outside of the fixed cylinder, the first power generation copper electrode group is arranged above the second power generation copper electrode group, the FEP film sleeve is sleeved on the outside of the first power generation copper electrode group and the second power generation copper electrode group, and the wind energy rotating mechanism is slidably sleeved on the outside of the FEP film sleeve;

[0013] The wind energy rotating mechanism is provided with a cylindrical rotating drum for rotating relative to the fixed drum under the action of wind energy. Two copper foils are arranged on the upper and lower parts of the cylindrical rotating drum, and the copper foils are fixedly attached to the inner wall of the cylindrical rotating drum.

[0014] The wireless sensing module is electrically connected to the first power generation copper electrode group, and the wired energy supply module is electrically connected to the second power generation copper electrode group.

[0015] In one embodiment, the support base is further provided with a base plate and a connecting piece, the fixing cylinder is fixedly connected to the top of the base plate, and the connecting piece is fixedly connected to an end of the fixing cylinder away from the base plate;

[0016] The base plate is provided with a connection hole that can be matched with the connection piece for installation;

[0017] The side wall of the fixing cylinder is provided with at least one wire hole for connecting the power generation copper electrode group with the wireless sensing module or the wired energy supply module.

[0018] In one embodiment, multiple groups of wind energy capture components are provided on the outside of the cylindrical rotor;

[0019] The wind energy capture assembly includes a wind arm and a hemispherical wind cup, one end of the wind arm is fixedly connected to the cylindrical rotor, and the hemispherical wind cup is fixedly connected to the other end of the wind arm;

[0020] The opening of the wind cup is perpendicular to the axis of the fixed cylinder.

[0021] In one embodiment, the wireless sensing module includes a transmitting unit for transmitting wireless signals of different functions, a receiving unit for receiving wireless signals of different functions, and a human-computer interaction unit for acquiring and processing the wireless signals sent by the receiving unit to obtain target measurement parameters;

[0022] The transmitting unit includes a transmitting resonant circuit and a tip discharge structure. The transmitting resonant circuit includes an equivalent resistor R0, a sensor unit, and an equivalent inductor L0 connected in series. The wind energy friction nanogenerator and the tip discharge structure are both connected in series to the transmitting resonant circuit.

[0023] The sensor unit is an inductive sensor unit or a capacitive sensor unit with different functions. The inductive sensor unit includes an inductive sensor LS, and the capacitive sensor unit includes a capacitive sensor Cs and an inductive sensor LS having a fixed value connected in parallel with the capacitive sensor.

[0024] In one embodiment, the wired energy supply module includes a rectifier bridge formed by connecting four identical diodes in series in the same direction and closing them, an energy storage capacitor, a low-power switch, and a low-power electronic device;

[0025] There is an interface between any two diodes in the rectifier bridge, the positive and negative poles of the second power generation copper electrode are respectively connected to the two interfaces spaced apart from each other in the rectifier bridge, the remaining two interfaces spaced apart from each other in the rectifier bridge are respectively connected to the output and input ends of the energy storage capacitor, the low-power switch is connected in parallel with the energy storage capacitor, the low-power electronic device is connected in parallel with the energy storage capacitor, and the low-power switch is connected in series with the low-power electronic device.

[0026] In one embodiment, the receiving unit includes a copper coil and an acquisition card connected in series, the human-computer interaction module is a computer terminal with a Labview platform, and the acquisition card is electrically connected or signal-connected to the computer terminal;

[0027] The computer terminal is used to obtain a frequency domain waveform by FFT transformation of the time domain waveform sent by the acquisition card, and then use the deep learning algorithm to extract the different features of the time domain waveform and the frequency domain waveform to determine the target measurement parameters.

[0028] In one embodiment, a sliding bracket for supporting the rotation of the cylindrical drum is provided on the top of the base, the sliding bracket is fixedly connected to the base, and the bottom of the cylindrical drum abuts against the sliding bracket.

[0029] In one embodiment, the first power generation copper electrode group and the second power generation copper electrode group are each provided with two power generation copper electrodes, and the thickness of the power generation copper electrodes is 50 μm;

[0030] The thickness of the FEP film jacket is 200 μm.

[0031] In one embodiment, the tip discharge structure includes a base plate and two triangular copper foils fixed to the base plate, wherein the tips of the two triangular copper foils are located on the same straight line and the distance between them is 0.5 mm;

[0032] The thickness of the triangular copper foil is 500 μm.

[0033] The beneficial effects of the present invention are:

[0034] (1) The present invention can convert wind energy in nature into electrical energy through a wind-powered friction nanogenerator to power the entire system, without the need for external batteries, thus achieving self-powered sensing and reducing the maintenance cost of the system.

[0035] (2) The wind energy friction nanogenerator in the system of the present invention has two sets of electrodes. When the fixed drum rotates, the two sets of electrodes can respectively supply power to the wireless sensing module and the wired power supply module simultaneously, thereby improving the efficiency of the friction nanogenerator in utilizing wind energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of a triboelectric nanogenerator provided by an embodiment of the present invention;

[0037] Figure 2 Assembly diagram of the FEP film sleeve and the support base provided in an embodiment of the present invention

[0038] Figure 3 A diagram illustrating the assembly relationship between the first power generation copper electrode group and the second power generation copper electrode group and the fixing cylinder provided in an embodiment of the present invention;

[0039] Figure 4 A schematic structural diagram of a wind energy rotating mechanism provided by an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of the circuit connections of the self-powered module, wireless sensor module, and wired powered module provided in an embodiment of the present invention;

[0041] Figure 6 A frequency domain diagram of a wireless signal from an inductive sensor received by a receiving unit provided in an embodiment of the present invention;

[0042] Figure 7 A frequency domain diagram of a wireless signal from a capacitive sensor received by a receiving unit provided in an embodiment of the present invention;

[0043] Figure 8 This is a charging voltage curve diagram of the wind energy friction nanogenerator provided by an embodiment of the present invention for capacitors of different capacitance values ​​at a wind speed of 10.5 m / s.

[0044] Explanation of the accompanying reference numerals: 110, support base; 111, substrate; 112, fixing cylinder; 113, connector; 114, connecting hole; 115, wire hole; 121, wind energy rotating mechanism; 122, FEP film sleeve; 123, first power generation copper electrode group; 124, second power generation copper electrode group; 125, cylindrical rotating drum; 126, copper foil; 127, wind arm; 128, wind cup; 200, transmitting resonant circuit; 300, tip discharge structure; 400, copper coil; 500, acquisition card; 600, energy storage capacitor; 700, rectifier bridge; 800, low-power switch; 900, low-power electronic device. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] It should be noted that in the description of the present invention, “upper”, “lower”, “top”, “bottom”, orientation or position relationship is based on the attached Figure 1 Regarding the orientation or positional relationship shown, it should be understood that these orientation terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0047] In one embodiment, this embodiment provides a self-powered multifunctional wireless sensing system based on a wind-energy triboelectric nanogenerator, comprising:

[0048] The self-powered module is equipped with a wind-powered triboelectric nanogenerator (TENG) that generates alternating current. This WRS-TENG converts natural wind energy into electricity to power the entire system, eliminating the need for external batteries. This enables self-powered sensing and reduces system maintenance costs.

[0049] The wireless sensing module is electrically connected to the self-powered module and is used to wirelessly transmit and process wireless signals carrying sensor-specific information generated by the alternating current (AC) generated by the wind-powered triboelectric nanogenerator to generate target measurement parameters. The wireless signals carrying sensor-specific information can include information about ambient temperature, humidity, and liquid level.

[0050] The wired power supply module is electrically connected to the self-power supply module and is used to convert the alternating current generated by the wind-energy friction nanogenerator into direct current for storage to power the low-power electronic device 900.

[0051] Specifically, the low-power electronic device 900 may be a thermometer, a hygrometer, or other device.

[0052] like Figure 1 、 Figure 2 and Figure 3 As shown, the wind energy friction nanogenerator includes a support base 110 and a friction power generation component fixedly assembled on the support base 110; the support base 110 is provided with a fixed cylinder 112, and the friction power generation component includes a wind energy rotating mechanism 121, an FEP film sleeve 122, a first power generation copper electrode group 123 and a second power generation copper electrode group 124, the first power generation copper electrode group 123 and the second power generation copper electrode group 124 are both fixedly attached to the outside of the fixed cylinder 112, the first power generation copper electrode group 123 is arranged above the second power generation copper electrode group 124, the FEP film sleeve 122 is sleeved on the outside of the first power generation copper electrode group 123 and the second power generation copper electrode group 124, and the wind energy rotating mechanism 121 is slidably sleeved on the outside of the FEP film sleeve 122.

[0053] Specifically, the first power generation copper electrode group 123 and the second power generation copper electrode group 124 are each provided with two power generation copper electrodes, and the thickness of the power generation copper electrodes is 50 μm; the FEP film sleeve 122 is full name of polytetrafluoroethylene propylene film, and its thickness is 200 μm.

[0054] like Figure 4 As shown, the wind energy rotating mechanism 121 is provided with a cylindrical rotating drum 125 for rotating relative to the fixed drum 112 under the action of wind energy. Two copper foils 126 are distributed vertically inside the cylindrical rotating drum 125 and fixedly adhered to the inner wall of the cylindrical rotating drum 125.

[0055] The wireless sensing module is electrically connected to the first power generation copper electrode group 123 , and the wired energy supply module is electrically connected to the second power generation copper electrode group 124 .

[0056] When the cylindrical drum 125 rotates, the copper foil 126 rubs against the FEP film sleeve 122 and generates friction charges, which in turn generate current in the external circuits of the wireless sensing module and the wired power supply module via the first power generation copper electrode group 123 and the second power generation copper electrode group 124 respectively.

[0057] In this embodiment, the self-powered module and the wireless sensing module can simultaneously power the wireless unit and the wired unit, thereby improving the efficiency of the friction nanogenerator in utilizing wind energy.

[0058] In one embodiment, the support base 110 is further provided with a base plate 111 and a connector 113. A fixing cylinder 112 is fixedly connected to the top of the base plate 111, and the connector 113 is fixedly connected to the end of the fixing cylinder 112 away from the base plate 111. The base plate 111 is provided with a connection hole 114 that mates with the connector 113. The side wall of the fixing cylinder 112 is provided with at least one wire hole 115 for connecting the power generation copper electrode group to the wireless sensor module or the wired power supply module. Multiple wind-powered triboelectric nanogenerators can be assembled together through the connector 113 and the connection hole 114.

[0059] Multiple groups of wind energy capture components are arranged on the outside of the cylindrical rotating drum 125; the wind energy capture components include a wind arm 127 and a hemispherical wind cup 128, one end of the wind arm 127 is fixedly connected to the cylindrical rotating drum 125, and the hemispherical wind cup 128 is fixedly connected to the other end of the wind arm 127; the opening of the wind cup 128 is perpendicular to the axis of the fixed drum 112.

[0060] In this embodiment, four groups of wind energy capture components are specifically provided. The wind arms 127 of each wind energy capture component are located on the same plane, and the openings of the multiple hemispherical wind cups 128 are all oriented clockwise.

[0061] Specifically, the support base 110 and wind energy rotating mechanism 121 are both made of PLA. The diameter of the fixing cylinder 112 is 30 mm, and the diameter of the wire hole 115 is 2 mm. The overall height of the cylindrical rotor 125 is 78 mm, and the diameter of the cylindrical rotor 125 is 41 mm. The four hemispherical wind cups 128 each have a diameter of 42 mm and an arm length of 30 mm. The copper electrodes for power generation are all 50 μm thick and measure 30 × 30 mm.

[0062] In one embodiment, a sliding bracket for supporting the rotation of the cylindrical drum 125 is provided on the top of the base. The sliding bracket is fixedly connected to the base, and the bottom of the cylindrical drum 125 abuts against the sliding bracket.

[0063] The function of the sliding bracket is to assist the cylindrical drum 125 to rotate relative to the FEP film sleeve 122 under the action of wind, thereby reducing the contact area between the cylindrical sleeve and the base plate 111 and reducing friction.

[0064] In one embodiment, the wireless sensing module includes a transmitting unit for transmitting wireless signals with different functions, a receiving unit for receiving wireless signals with different functions, and a human-computer interaction unit for acquiring and processing the wireless signals sent by the receiving unit to obtain target measurement parameters.

[0065] like Figure 5As shown, the transmitting unit includes a transmitting resonant circuit 200 and a tip discharge structure 300. The transmitting resonant circuit 200 includes an equivalent resistor R0, a sensor unit and an equivalent inductor L0 connected in series in sequence. The wind energy friction nanogenerator and the tip discharge structure 300 are both connected in series to the transmitting resonant circuit 200.

[0066] The sensor unit is an inductive sensor unit or a capacitive sensor unit with different functions. The inductive sensor unit includes an inductive sensor LS, and the capacitive sensor unit includes a capacitive sensor Cs and an inductive sensor LS having a fixed value connected in parallel with the capacitive sensor.

[0067] In the present invention, when the cylindrical drum 125 rotates under the influence of wind, the electrical energy generated by the wind-powered triboelectric nanogenerator is instantly injected into the entire resonant circuit. This generates an extremely high voltage (3 kV) between the two triangular copper foil electrodes 126 positioned opposite each other in the tip discharge structure 300. This voltage can penetrate the air near the tip and trigger an electron avalanche effect, simultaneously emitting a wireless electromagnetic wave signal. Simultaneously, by configuring inductance sensors Ls and capacitance sensors Cs of different sizes in the transmitting resonant circuit 200, various parameters of the transmitted wireless signal are affected. When the external measurement parameters change, the capacitance or inductance value of the corresponding sensor also changes.

[0068] From the perspective of the time domain, changing the size of the series inductor or parallel capacitor in the transmitting circuit may change the envelope shape and decay time of the time domain signal; from the perspective of the frequency domain, it will change the resonant frequency of the frequency domain signal. Therefore, the basic principle of the present invention is: by connecting different capacitive sensors or inductive sensors to the transmitting unit circuit, when the external measurement parameters change, the capacitance value or inductance value of the corresponding sensor also changes. At the moment when the wind drives the wind energy friction nanogenerator to generate electricity, the transmitting unit is injected with electrical energy and transmits a wireless signal carrying sensor-specific information through the cutting-edge power generation structure, which is eventually captured by the receiving end and processed in the human-computer interaction unit to obtain the target measurement parameters.

[0069] Specifically, the tip discharge structure 300 in this embodiment includes a base plate and two triangular copper foils 126 fixed on the base plate. The tips of the two triangular copper foils 126 are located on the same straight line and the distance between them is 0.5 mm. The thickness of the triangular copper foils 126 is 500 μm.

[0070] In one embodiment, the receiving unit includes a copper coil 400 and an acquisition card 500 connected in series. The human-computer interaction module is a computer terminal with a Labview platform, and the acquisition card 500 is electrically connected or signal-connected to the computer terminal. The computer terminal is used to perform FFT transformation on the time domain waveform sent by the acquisition card 500 to obtain a frequency domain waveform, and then use a deep learning algorithm to extract different features of the time domain waveform and the frequency domain waveform to determine the target measurement parameters.

[0071] In this embodiment, copper coil 400 has an inductance of 20 μH and a diameter of 80 mm. The inductor coil is placed vertically and connected to an acquisition card 500 at both ends. This acquisition card 500 is then connected to the LabVIEW platform on a computer terminal for further signal processing and human-machine interface display. When the wireless sensor signal from the transmitting unit is received by the inductor copper coil 400, the received time domain waveform can be displayed and saved on the experimental platform built using LabVIEW.

[0072] It should be noted that the resonant circuit can be replaced with different sensor units. When their inductance or capacitance changes with the measured parameters, they act like variable capacitors and variable inductors in the circuit. Therefore, when the wind drives the WRS-TENG, combined with our transmitter unit, the corresponding sensing results can be obtained at the receiving end, thereby achieving wireless sensor power supply. For example, the resistance of the inductor Ls can be fixed and a capacitive pressure sensor can be connected in parallel at both ends to sense the pressure. When different pressures are applied to the sensor, the wind-driven WRS-TENG can awaken the entire wireless sensing system, emitting a specific resonant electromagnetic wave signal that is captured by the receiving unit. The acquisition signal is then set to single-shot trigger mode. The time-domain waveform data from the acquisition card 500 is then acquired by the LabVIEW platform on the computer and subjected to FFT transformation to obtain its frequency-domain waveform. The resulting frequency-domain waveform generally has two resonant peaks. The highest resonant peak is the self-oscillation frequency of the receiving coil, and the second peak is the resonant peak of the sensor signal from the transmitter. The second peak will also be located at different positions depending on the parameters detected by the transmitter sensor. like Figure 6 and Figure 7 As shown in the figure, as the equivalent capacitance or inductance of the transmitting unit increases, the second peak of the frequency domain signal begins to shift toward lower frequencies, demonstrating excellent discrimination. Finally, we combine deep learning algorithms to extract the locations of the different peaks of these pressure sensing signals, allowing us to accurately identify the pressure represented by the current signal.

[0073] Similarly, different parameters such as displacement, acceleration and thickness can also be measured by connecting different sensor units. In addition, the present invention can also measure wind speed. Since the WRS-TENG will rotate continuously under the drive of wind, the generated wireless electromagnetic signal will also be continuously emitted. When the wind speed increases, the number of times the WRS-TENG rotates will increase, and the number of discharges of the transmitting unit will also increase. Therefore, we can set the acquisition card 500 to continuous trigger mode, so that we can record the number of times the WRS-TENG receives the wireless signal at the receiving end under a specific rotation time, and fit the wind speed at this time by collecting multiple data and combining the Matlab platform. Further expansion, we can set a threshold for the number of times the wireless signal is received on the computer side, stop receiving the sensor signal when this threshold is reached, and analyze and identify the last signal to give the sensing result at this time, which is equivalent to adding a timing function to the original wireless sensing function.

[0074] In one embodiment, the wired energy supply module includes a rectifier bridge 700 composed of four identical diodes connected in series in the same direction and then closed, an energy storage capacitor 600, a low-power switch 800, and a low-power electronic device 900;

[0075] There is an interface between any two diodes of the rectifier bridge 700, the positive and negative poles of the second power generation copper electrode are respectively connected to the two interfaces spaced apart from each other on the rectifier bridge 700, and the remaining two spaced apart interfaces of the rectifier bridge 700 are respectively connected to the output and input ends of the energy storage capacitor 600, the low-power switch 800 is connected in parallel with the energy storage capacitor 600, the low-power electronic device 900 is connected in parallel with the energy storage capacitor 600, and the low-power switch 800 is connected in series with the low-power electronic device 900.

[0076] The function of the rectifier bridge 700 circuit is to convert the AC power output by the WRS-TENG into DC power. The function of the energy storage capacitor 600 is to collect the converted DC power. When the WRS-TENG is continuously rotated by the wind, the energy storage capacitor 600 is in a charging state, and the voltage at both ends of it continues to rise. After a period of charging, if the low-power switch 800 located on the low-power electronic device 900 in the circuit is turned on, the energy storage capacitor 600 is in a discharging state, and the voltage at both ends of it continues to drop. At the same time, the energy storage capacitor 600 starts to power the electronic device, completing the wired power supply function. Figure 8 Figure 2 shows the charging voltage curves of WRS-TENG for capacitors of different capacitance values ​​at a wind speed of 10.5 m / s. It can be clearly seen that the smaller the capacitance, the faster the charging speed.

[0077] This example also tested the WRS-TENG's wired power supply performance. While achieving wireless sensing, the WRS-TENG was able to charge a 47μF energy storage capacitor (600V) to 2V in 15 minutes. It also successfully powered a battery-free thermometer and hygrometer for 20 seconds after the switch was turned on. It's worth noting that the thermometer and hygrometer can be replaced with low-power devices such as LED arrays and warning lights to meet practical application needs.

[0078] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A self-powered multifunctional wireless sensing system based on wind energy triboelectric nanogenerator, characterized in that: include: A self-powered module equipped with a wind-powered tribo-nanogenerator capable of generating alternating current; a wireless sensing module, electrically connected to the self-powered module, for wirelessly transmitting a wireless signal carrying sensor-specific information generated by the alternating current generated by the wind-powered triboelectric nanogenerator and processing the signal to generate target measurement parameters; a wired power supply module, electrically connected to the self-power supply module, for converting the alternating current generated by the wind-energy friction nanogenerator into direct current for storage to power low-power electronic devices (900); The wind energy friction nanogenerator comprises a support seat (110) and a friction power generation component fixedly assembled on the support seat (110); The support seat (110) is provided with a fixed cylinder (112); the friction power generation component comprises a wind energy rotating mechanism (121), an FEP film sleeve (122), a first power generation copper electrode group (123) and a second power generation copper electrode group (124); the first power generation copper electrode group (123) and the second power generation copper electrode group (124) are both fixedly attached to the outside of the fixed cylinder (112); the first power generation copper electrode group (123) is arranged above the second power generation copper electrode group (124); the FEP film sleeve (122) is sleeved on the outside of the first power generation copper electrode group (123) and the second power generation copper electrode group (124); and the wind energy rotating mechanism (121) is slidably sleeved on the outside of the FEP film sleeve (122); The wind energy rotating mechanism (121) is provided with a columnar rotating drum (125) for rotating relative to the fixed drum (112) under the action of wind energy, and two copper foils (126) are arranged in an upper and lower distribution inside the columnar rotating drum (125), and the copper foils (126) are fixedly attached to the inner wall of the columnar rotating drum (125); The wireless sensing module is electrically connected to the first power generation copper electrode group (123), and the wired energy supply module is electrically connected to the second power generation copper electrode group (124).

2. The self-powered multifunctional wireless sensing system based on wind energy triboelectric nanogenerator according to claim 1 is characterized in that: The support seat (110) is further provided with a base plate (111) and a connecting member (113); the fixing cylinder (112) is fixedly connected to the top of the base plate (111); and the connecting member (113) is fixedly connected to an end of the fixing cylinder (112) away from the base plate (111); The base plate (111) is provided with a connection hole (114) that can be matched with and installed with the connection piece (113); The side wall of the fixing cylinder (112) is provided with at least one wire hole (115) for connecting and threading the power generation copper electrode group with the wireless sensor module or the wired energy supply module.

3. The self-powered multifunctional wireless sensing system based on wind energy triboelectric nanogenerator according to claim 1 is characterized in that: Multiple groups of wind energy capture components are arranged on the outer side of the cylindrical rotating drum (125); The wind energy capture assembly includes a wind arm (127) and a hemispherical wind cup (128), one end of the wind arm (127) is fixedly connected to the cylindrical drum (125), and the hemispherical wind cup (128) is fixedly connected to the other end of the wind arm (127); The opening of the wind cup (128) is oriented perpendicular to the axis of the fixing cylinder (112).

4. The self-powered multifunctional wireless sensing system based on wind energy triboelectric nanogenerator according to claim 1 is characterized in that: The wireless sensing module includes a transmitting unit for transmitting wireless signals with different functions, a receiving unit for receiving wireless signals with different functions, and a human-computer interaction unit for acquiring and processing the wireless signals sent by the receiving unit to obtain target measurement parameters; The transmitting unit comprises a transmitting resonant circuit (200) and a tip discharge structure (300), the transmitting resonant circuit (200) comprises an equivalent resistor R0, a sensor unit, and an equivalent inductor L0 sequentially connected in series, and the wind energy friction nanogenerator and the tip discharge structure (300) are both connected in series to the transmitting resonant circuit (200); The sensor unit is an inductive sensor unit or a capacitive sensor unit with different functions. The inductive sensor unit includes an inductive sensor LS. The capacitive sensor unit includes a capacitive sensor Cs and an inductive sensor LS with a fixed value connected in parallel with the capacitive sensor.

5. The self-powered multifunctional wireless sensing system based on wind energy triboelectric nanogenerator according to claim 1 is characterized in that: The wired energy supply module comprises a rectifier bridge (700) formed by connecting four identical diodes in series in the same direction and then closing them, an energy storage capacitor (600), a low-power switch (800), and a low-power electronic device (900); There is an interface between any two diodes of the rectifier bridge (700); the positive and negative electrodes of the second power generation copper electrode are respectively connected to two interfaces of the rectifier bridge (700) that are spaced apart; the remaining two interfaces of the rectifier bridge (700) are respectively connected to the output end and the input end of the energy storage capacitor (600); the low-power switch (800) is connected in parallel with the energy storage capacitor (600); the low-power electronic device (900) is connected in parallel with the energy storage capacitor (600); and the low-power switch (800) is connected in series with the low-power electronic device (900).

6. The self-powered multifunctional wireless sensing system based on wind energy triboelectric nanogenerator according to claim 4 is characterized in that: The receiving unit comprises a copper coil (400) and an acquisition card (500) connected in series, the human-computer interaction module is a computer terminal with a Labview platform, and the acquisition card (500) is electrically connected or signal-connected to the computer terminal; The computer terminal is used to perform FFT transformation on the time domain waveform sent by the acquisition card (500) to obtain a frequency domain waveform, and then use a deep learning algorithm to extract different features of the time domain waveform and the frequency domain waveform to determine the target measurement parameter.

7. The self-powered multifunctional wireless sensing system based on wind energy triboelectric nanogenerator according to any one of claims 2 to 6, characterized in that: A sliding bracket for supporting the rotation of the columnar rotating drum (125) is provided on the top of the base, the sliding bracket is fixedly connected to the base, and the bottom of the columnar rotating drum (125) abuts against the sliding bracket.

8. The self-powered multifunctional wireless sensing system based on wind energy triboelectric nanogenerator according to claim 7 is characterized in that: The first power generation copper electrode group (123) and the second power generation copper electrode group (124) are both provided with two power generation copper electrodes, and the thickness of the power generation copper electrodes is 50 μm; The thickness of the FEP film jacket layer (122) is 200 μm.

9. The self-powered multifunctional wireless sensing system based on wind energy triboelectric nanogenerator according to claim 8, characterized in that: The tip discharge structure (300) comprises a bottom plate and two triangular copper foils (126) fixed on the bottom plate, wherein the tips of the two triangular copper foils (126) are located on the same straight line and the distance between them is 0.5 mm; The thickness of the triangular copper foil (126) is 500 μm.

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