A multi-waveform signal generator and method based on friction nano-power generation

Abstract

The present invention relates to the technical field of waveform generators, and more specifically, to a multi-waveform signal generator and method based on friction nano-power generation. The generator includes an adjustable speed motor group and a friction nano-power generation unit driven by the adjustable speed motor group. The friction nano-power generation unit includes a shell and a rotor arranged in the shell. The rotor rotates around the center of the shell. A friction plate is provided on the side of the rotor close to the inner wall of the shell. An arc-shaped electrode layer is provided on the inner wall of the shell, and a dielectric film is attached to the side of the electrode layer facing the center of the shell. The micro motor in the adjustable speed motor group is started, and the micro motor drives the rotor to rotate clockwise or counterclockwise. The rotor drives the friction plate to rotate synchronously. The friction plate and the dielectric film generate periodic friction, and the electrode layer generates a potential difference. Finally, the electrode layer transmits the potential difference to the output circuit, and the output circuit converts it into a waveform electrical signal for output. The present invention has a simple structure, low power generation energy consumption, and can flexibly output different waveform signals.

Description

Technical Field

[0001] The present invention relates to the technical field of waveform generators, and more specifically, to a multi-waveform signal generator and method based on friction nano-power generation. Background Art

[0002] A waveform generator is a data signal generator. When debugging hardware, a waveform generator is often used to add some signals to observe whether the circuit is working properly. Since the friction nano-power generation technology was formally proposed by the team of Academician Wang Zhonglin in 2012, it has shined in the fields of energy collection and sensors in recent years. It uses the coupling principle of friction power generation and electrostatic induction to efficiently collect energy. In the field of energy collection, it can be used to collect ocean energy, wind energy, vibration energy, etc.; in the field of sensors, friction nano-generators can be used as sensors for speed, acceleration, pressure, gas concentration, etc. At present, there is no discovery of the combination of friction nano-power generation technology and waveform generators.

[0003] A Chinese patent with publication number CN108768202A disclosed a nanogenerator and a nanogenerator system on November 6, 2018. This technical solution uses mutually rotating friction components to perform friction nano-power generation, but is not used in conjunction with a waveform generator and cannot perform output regulation. Summary of the invention

[0004] The present invention applies friction nano-power generation technology to a waveform generator in a breakthrough manner, and provides a multi-waveform signal generator and method based on friction nano-power generation, which has a simple structure, low power generation energy consumption, and can flexibly output different waveform signals.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A multi-waveform signal generator based on friction nano power generation includes an adjustable speed motor group and a friction nano power generation unit driven by the adjustable speed motor group, the friction nano power generation unit includes a shell and a rotor arranged in the shell, the rotor rotates around the center of the shell, and a friction plate is arranged on the side of the rotor close to the inner wall of the shell; the inner wall of the shell is provided with an arc electrode layer, and a dielectric film is attached to the side of the electrode layer facing the center of the shell; when the rotor rotates to the position of the dielectric film, the friction plate and the surface of the dielectric film generate friction; the electrode layer is externally connected to an output circuit. The output circuit is an existing commonly used rectifier and voltage stabilization circuit, which is mainly used to convert the potential difference into a stable waveform signal for external output.

[0007] When the rotor does not rotate, the friction nano power generation unit will not generate a potential difference. When the rotor rotates, the friction plate on the rotor and the dielectric film are separated by relative friction. Since the two materials have different electrode sequences, when relative rotation occurs, the surfaces of the two materials will carry different charges. At this time, the arc-shaped electrode layer attached to the back of the dielectric film induces positive charge. At this time, the electrode layer and the ground terminal generate a potential difference, thereby driving the flow of electrons to generate an electrical signal output in the output circuit, that is, an output waveform signal.

[0008] Furthermore, the shell is in a circular ring shape. The shell is a circular ring shell, and the rotor is located in the shell, rotates around the central axis of the shell, and is relatively frictionally separated from the dielectric film on the inner wall of the shell.

[0009] Furthermore, the axial section of the rotor is a fan-shaped structure with a central angle of (0, 180); the friction plate is an arc, and the central angles of the friction plate and the rotor are equal. Based on the principle of friction nano-power generation, the friction plate and the dielectric film cannot have continuous friction contact. When the rotor is selected as a fan-shaped structure, as the rotor rotates, the friction plate attached to the rotor and the dielectric film are intermittently and periodically rubbed.

[0010] Alternatively, the axial cross section of the rotor is a circular structure, the friction plate is arc-shaped, and the center angle of the friction plate is (0, 180). The rotor can also be a cylindrical structure, the friction plate is arc-shaped, attached to the outer wall of the cylindrical rotor, and intermittently rubs with the dielectric film.

[0011] Furthermore, the side of the friction plate in contact with the dielectric film is provided with a nanometer to micrometer-scale raised microstructure. The friction contact surface of the friction plate is distributed with nanometer to micrometer-scale microstructures, which is a structure included in the well-known friction nano-power generation technology and is the core of the friction nano-power generation principle.

[0012] Furthermore, the microstructure is a linear, cubic or quadrangular pyramid nanoarray. The nanoarray can be prepared by photolithography or plasma etching.

[0013] Furthermore, the microstructure is composed of one or more structures selected from nanowires, nanotubes, nanorods, nanoparticles, nanogrooves, microgrooves, nanocones, and nanospheres. The size of each unit in the array is in the order of micrometers to nanometers, and the specific unit size and shape can be varied as long as the mechanical strength of the microstructure is not affected.

[0014] Furthermore, the dielectric film is made of polytetrafluoroethylene (PTFE). The dielectric film is a polymer material that is easily negatively charged in the electrical sequence table. In order to increase the output electrical signal, a nano- to micro-scale microstructure is also distributed on the surface of the dielectric film.

[0015] Furthermore, the adjustable speed motor group includes a micro motor and a speed regulator for adjusting the micro motor, the output shaft of the micro motor is connected to the rotor, the adjustable speed motor group is externally connected to a power source, and the output shaft of the micro motor is connected to the center of the housing.

[0016] The multi-waveform signal generator based on friction nano-power generation, the generating method thereof comprises the following steps:

[0017] S1 starts the micro motor in the adjustable speed motor group, and the micro motor drives the rotor to rotate clockwise or counterclockwise. The clockwise and counterclockwise power generation principles are the same.

[0018] The rotor in S2 drives the friction plate to rotate synchronously, and the friction plate and the dielectric film produce periodic friction, thereby generating an electric potential difference. When the friction plate rotates to the point where nano-friction occurs with the dielectric film, the original electrostatic balance is broken. At this time, negative electricity is induced on the surface of the dielectric film, and positive electricity is induced on the surface of the electrode layer. Electrons flow from the grounded end to the electrode layer until the friction plate and the dielectric film completely overlap. When the friction plate begins to separate from the dielectric film, electrons flow back, generating an opposite electrical signal. This process is a cycle, generating a sinusoidal electrical signal.

[0019] The S3 electrode layer transmits the potential difference to the output circuit, which converts it into a waveform electrical signal for output. The electrical signal generated by the friction nano-power generation unit is output as a waveform signal to the outside through the output circuit.

[0020] S4 adjusts the speed regulator of the adjustable speed motor group in S1, changes the rotor speed, changes the friction cycle, and generates electrical signals of different waveforms. The rotor rotates continuously in the housing, and the friction plate attached to the rotor and the dielectric film on the inner wall of the housing undergo periodic friction. By changing the rotor speed, the amplitude and frequency of the generated electrical signal can be changed.

[0021] S5 changes the friction area of ​​the friction plate in the multi-waveform signal generator of tribo-nanoelectric power generation, and also changes the friction cycle to generate electrical signals with different waveforms.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention discloses a multi-waveform signal generator and method based on friction nanopower generation, which combines friction nanopower generation technology, has low power generation energy consumption, a simple and adjustable structure, and is easy to operate, and can flexibly output different waveform signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the friction nano power generation unit in Example 1 of the present invention.

[0025] Figure 3It is an exploded view of the structure of embodiment 1 of the present invention.

[0026] Figure 4 It is a schematic diagram of the principle process of the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the friction nano power generation unit in Example 2 of the present invention.

[0028] Figure 6 1 is a simplified diagram of the output circuit of Embodiment 1 of the present invention.

[0029] Among them, 1 is a friction nano power generation unit, 2 is a shell, 3 is a rotor, 4 is a friction plate, 5 is an electrode layer, 6 is a dielectric film, 7 is an output circuit, 8 is a micro motor, and 9 is a speed regulator. DETAILED DESCRIPTION

[0030] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0031] Example 1

[0032] like Figure 1-3 As shown, the present invention provides a multi-waveform signal generator based on friction nano power generation, including an adjustable speed motor group and a friction nano power generation unit 1 driven by the adjustable speed motor group.

[0033] The friction nano power generation unit 1 includes a circular shell 2 and a rotor 3 disposed in the shell 2, and the rotor 3 rotates around the center of the shell 2. At the same time, the adjustable speed motor group includes a micro motor 8 and a speed regulator 9 for adjusting the micro motor 8, the output shaft of the micro motor 8 is connected to the center of the shell 2 and is connected to the rotor 3, and the adjustable speed motor group is externally connected to a power source.

[0034] Specifically, the axial cross section of the rotor 3 is a sector-shaped structure, and its central angle is 90°. A friction plate 4 is attached to the side of the rotor 3 close to the inner wall of the housing 2. In this embodiment, the friction plate 4 is arc-shaped, and the central angles of the friction plate 4 and the rotor 3 are equal.

[0035] At the same time, an arc-shaped electrode layer 5 is provided on the inner wall of the shell 2, and a dielectric film 6 is attached to the side of the electrode layer 5 facing the center of the shell 2. In this embodiment, the central angle of the arc-shaped electrode layer 5 and the dielectric film 6 is also 90°, so when the rotor 3 rotates, there is a moment when the contact surface of the friction plate 4 and the dielectric film 6 completely overlaps.

[0036] Specifically, the side of the friction plate 4 that contacts the dielectric film 6 is provided with a nano- to micron-scale protrusion microstructure, which is composed of one or more structural arrangements of nanowires, nanotubes, nanorods, nanoparticles, nanogrooves, microgrooves, nanocones, and nanospheres, and is prepared by photolithography and plasma etching methods to form a linear, cubic, or tetrahedral nanoarray.

[0037] The material of the dielectric film 6 is polytetrafluoroethylene (PTFE), which is a polymer material that is easily negatively charged in the electrical sequence table. In order to increase the output electrical signal, nano- to micro-scale microstructures are also distributed on the surface of the dielectric film 6. When the rotor 3 rotates to the overlapping position of the dielectric film 6, the friction plate 4 and the surface of the dielectric film 6 generate friction.

[0038] In addition, the electrode layer 5 is externally connected to an output circuit 7 to output electrical signals, such as Figure 6 As shown, the output circuit is connected to the friction nano power generation unit 1, and the friction nano power generation unit in the figure is schematically represented by TENG.

[0039] When the rotor 3 does not rotate, the friction nano power generation unit 1 does not generate an electric potential difference. Since the power generation principle is the same, the principle of electrical signal generation is described below using the most basic clockwise rotation method.

[0040] The multi-waveform signal generating method comprises the following steps:

[0041] S1 starts the micro motor 8 in the adjustable speed motor group, and the micro motor 8 drives the rotor 3 to rotate clockwise.

[0042] The S2 rotor 3 drives the friction plate 4 to rotate synchronously, and the friction plate 4 and the dielectric film 6 produce periodic friction, and the electrode layer 5 thus produces an electric potential difference. Specifically, the friction plate 4 on the rotor 3 and the dielectric film 6 are separated by relative friction. Since the friction plate 4 and the dielectric film 6 have different electrode sequences, when relative rotation occurs, the surfaces of the two will be charged with different charges. At this time, the surface of the dielectric film 6 is induced with negative charge, and the surface of the electrode layer 5 is induced with positive charge. At this time, electrons flow from the grounded end to the electrode layer 5 until the friction plate 4 and the dielectric film 6 completely overlap. When the friction plate 4 begins to separate from the dielectric film 6, the electrons flow back, generating an opposite electrical signal.

[0043] like Figure 4As shown, the friction plate 4 rotates with the rotor 3. When it approaches the dielectric film 6, the contact area between the two gradually increases. At this time, the heterogeneous charges on the surfaces of the two gradually increase, and the generated induced potential difference gradually increases. When the contact area between the two is the largest, the potential difference will reach a peak value; then, as the rotor 3 rotates, the two gradually separate, the contact area gradually decreases, the heterogeneous charges on the surfaces of the two gradually decrease, and the generated induced potential difference will also gradually decrease. This cycle repeats periodically, and a continuous sinusoidal waveform electrical signal will be output in this cycle form.

[0044] The S3 electrode layer 5 transmits the potential difference to the output circuit 7, driving the flow of electrons to generate an electrical signal output in the output circuit 7, which is converted into a waveform electrical signal output by the output circuit 7.

[0045] S4 adjusts the speed regulator 9 of the adjustable speed motor group in S1, changes the speed of the rotor 3, changes the friction cycle, and by changing the speed of the rotor 3, the amplitude and frequency of the electrical signal generated by it can be changed to generate electrical signals with different waveforms.

[0046] S5 Similarly, changing the friction area of ​​the friction plate 4 in the multi-waveform signal generator of tribo-nanoelectric power generation also changes the friction cycle and generates electrical signals with different waveforms.

[0047] Example 2

[0048] like Figure 5 As shown, this embodiment also provides a multi-waveform signal generator based on friction nanopower generation. The basic principle is similar to that of Example 1, except that, in this embodiment, the axial cross-section of the rotor 3 is a circular structure, that is, the rotor 3 is a cylindrical structure, but the friction plate 4 is still arc-shaped, and the central angle of the friction plate 4 is 90°. When the rotor 3 rotates, the friction process between the friction plate 4 and the dielectric film 6 is the same.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A multi-waveform signal generator based on tribo-nanoelectricity generation, characterized in that: The invention comprises an adjustable speed motor group and a friction nanometer power generation unit (1) driven by the adjustable speed motor group. The friction nanometer power generation unit (1) comprises a shell (2) and a rotor (3) arranged in the shell (2). The rotor (3) rotates around the center of the shell (2). A friction plate (4) is arranged on a side of the rotor (3) close to the inner wall of the shell (2). An arc-shaped electrode layer (5) is arranged on the inner wall of the shell (2). A dielectric film (6) is attached to a side of the electrode layer (5) facing the center of the shell (2). When the rotor (3) rotates to the position of the dielectric film (6), friction is generated between the friction plate (4) and the surface of the dielectric film (6). The adjustable speed motor group comprises a micro motor (8) and a speed regulator (9) for regulating the micro motor (8); the output shaft of the micro motor (8) is connected to the rotor (3); the speed regulator (9) changes the speed of the rotor (3); by changing the speed of the rotor (3), the amplitude and frequency of the electric signal generated by the rotor (3) can be changed, thereby generating electric signals with different waveforms; The electrode layer (5) is externally connected to an output circuit (7), and the electrode layer (5) transmits the potential difference to the output circuit (7), driving the flow of electrons to generate an electrical signal output in the output circuit (7), and the output circuit (7) converts the electrical signal into a waveform output.

2. The multi-waveform signal generator based on tribo-nanoelectric power generation according to claim 1, characterized in that: The shell (2) is in the shape of a ring.

3. The multi-waveform signal generator based on tribo-nanoelectric power generation according to claim 2, characterized in that: The axial cross section of the rotor (3) is a fan-shaped structure, and the center angle is (0, 180); the friction plate (4) is arc-shaped, and the center angles of the friction plate (4) and the rotor (3) are equal.

4. The multi-waveform signal generator based on tribo-nanoelectric power generation according to claim 2, characterized in that: The axial cross section of the rotor (3) is a circular structure, the friction plate (4) is arc-shaped, and the center angle of the friction plate (4) is (0, 180).

5. The multi-waveform signal generator based on tribo-nanoelectric power generation according to claim 3 or 4, characterized in that: A surface of the friction plate (4) in contact with the dielectric film (6) is provided with a nanometer to micrometer-scale raised microstructure.

6. The multi-waveform signal generator based on tribo-nanoelectric power generation according to claim 5, characterized in that: The microstructure is a linear, cubic or quadrangular pyramid nanoarray.

7. The multi-waveform signal generator based on tribo-nanoelectric power generation according to claim 6, characterized in that: The microstructure is composed of one or more structures selected from the group consisting of nanowires, nanotubes, nanorods, nanoparticles, nanogrooves, micron grooves, nanocones, and nanospheres.

8. The multi-waveform signal generator based on tribo-nanoelectric power generation according to claim 7, characterized in that: The material of the dielectric film (6) is polytetrafluoroethylene.

9. A method for generating a multi-waveform signal based on tribo-nanoelectric power generation, according to the multi-waveform signal generator based on tribo-nanoelectric power generation according to claim 8, characterized in that: The following steps are involved: S1 starts the micro motor (8) in the adjustable speed motor group, and the micro motor (8) drives the rotor (3) to rotate clockwise or counterclockwise; S2: the rotor (3) drives the friction plate (4) to rotate synchronously, and the friction plate (4) and the dielectric film (6) generate periodic friction, thereby generating an electric potential difference in the electrode layer (5); The S3 electrode layer (5) transmits the potential difference to the output circuit (7), and the output circuit (7) converts it into a waveform electrical signal for output; S4 adjusts the speed regulator (9) of the adjustable speed motor group in S1, changes the speed of the rotor (3), changes the friction cycle, and generates electrical signals with different waveforms; S5 changes the friction area of ​​the friction plate (4) in the multi-waveform signal generator of friction nano-power generation, and also changes the friction cycle to generate electrical signals with different waveforms.

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