Method and device for monitoring structural deformation of mechanical metamaterials based on triboelectricity

Abstract

The present invention relates to the technical field of self-sensing intelligent materials, and in particular to a method and device for monitoring structural deformation of a mechanical metamaterial based on triboelectricity, wherein the mechanical metamaterial is arranged by a plurality of mechanical metamaterial cell arrays, and the method comprises: obtaining the triboelectric signal generated by the first thin beam and the second thin beam and the triboelectric electrode when each mechanical metamaterial cell is deformed; based on a measurement circuit, calculating the deformation of each mechanical metamaterial cell using a preset sensing characteristic curve and the triboelectric signal; and obtaining the deformation of the mechanical metamaterial based on the deformation of each mechanical metamaterial cell. Thus, the problem that the existing mechanical metamaterial structure cannot realize self-monitoring is solved, and the structure has the characteristics of self-monitoring, self-power supply, low cost, and easy integration, realizing the integration of structure, function, perception, and control, and can be applied to energy, transportation, housing, electromechanical equipment and other fields, with a simple implementation process, low calculation difficulty and accurate detection.

Description

Technical Field

[0001] The present invention relates to the technical field of self-sensing intelligent materials, and in particular to a method and device for monitoring structural deformation of mechanical metamaterials based on triboelectricity. Background Art

[0002] Smart materials have the characteristics of sensing external stimuli, being able to analyze and judge and respond appropriately, and have the characteristics of structural functionalization and functional diversification. Mechanical metamaterials are artificial structures that obtain extraordinary physical properties that natural materials do not have by artificially designing the structure at the key physical scale of the material. However, the existing mechanical metamaterial structures cannot achieve self-monitoring, which needs to be solved urgently. Summary of the invention

[0003] The present invention provides a method and device for monitoring structural deformation of a mechanical metamaterial based on triboelectricity, so as to solve the problem that the existing mechanical metamaterial structure cannot realize self-monitoring.

[0004] A first aspect of the present invention provides a method for monitoring structural deformation of a mechanical metamaterial based on triboelectricity, wherein the mechanical metamaterial is obtained by arranging a plurality of mechanical metamaterial cell arrays, and each mechanical metamaterial cell comprises: a first thin beam, a triboelectric electrode, a second thin beam and a measurement circuit, wherein the first thin beam and the triboelectric electrode form a friction pair, the second thin beam is used to support the first thin beam and the triboelectric electrode, and the measurement circuit is connected to the triboelectric electrode, wherein the method comprises the following steps: obtaining the triboelectric signal generated by the first thin beam, the second thin beam and the triboelectric electrode when each mechanical metamaterial cell is deformed; based on the measurement circuit, calculating the deformation of each mechanical metamaterial cell using a preset sensing characteristic curve and the triboelectric signal; and obtaining the deformation of the mechanical metamaterial based on the deformation of each mechanical metamaterial cell.

[0005] Optionally, the deformation of each mechanical metamaterial cell is calculated based on the measurement circuit using a preset sensing characteristic curve and the friction electric signal, including: using the measurement circuit to detect the peak-to-peak value of the open circuit voltage between the friction electric electrode and the ground; and calculating the deformation of the mechanical metamaterial cell based on the peak-to-peak value of the open circuit voltage and the preset sensing characteristic curve.

[0006] Optionally, the calculation formula for calculating the deformation of the mechanical metamaterial cell is:

[0007]

[0008] Among them, Δx is the deformation of the mechanical metamaterial cell, K is the preset coefficient, V np is the output voltage of each mechanical metamaterial cell.

[0009] Optionally, obtaining the deformation amount of the mechanical metamaterial based on the deformation amount of each mechanical metamaterial cell includes: performing sum processing on the deformation amount of each mechanical metamaterial cell to obtain the deformation amount of the mechanical metamaterial.

[0010] Optionally, the multiple mechanical metamaterial cells are connected in series.

[0011] Optionally, the thickness of the first thin beam is smaller than the thickness of the second thin beam.

[0012] According to a second aspect of the present invention, an embodiment provides a structural deformation monitoring device for a mechanical metamaterial based on triboelectricity, wherein the mechanical metamaterial is obtained by arranging a plurality of mechanical metamaterial cell arrays, and each mechanical metamaterial cell comprises: a first thin beam, a triboelectric electrode, a second thin beam and a measurement circuit, wherein the first thin beam and the triboelectric electrode form a friction pair, the second thin beam is used to support the first thin beam and the triboelectric electrode, and the measurement circuit is connected to the triboelectric electrode, wherein the device comprises: a first acquisition module, for acquiring the triboelectric signal generated by the first thin beam, the second thin beam and the triboelectric electrode when each mechanical metamaterial cell is deformed; a calculation module, for calculating the deformation of each mechanical metamaterial cell based on the measurement circuit and using a preset sensing characteristic curve and the triboelectric signal; and a second acquisition module, for obtaining the deformation of the mechanical metamaterial based on the deformation of each mechanical metamaterial cell.

[0013] Optionally, the calculation module is further used to: use the measurement circuit to detect the peak-to-peak value of the open circuit voltage between the friction electric electrode and the ground; and calculate the deformation of the mechanical metamaterial cell based on the peak-to-peak value of the open circuit voltage and the preset sensing characteristic curve.

[0014] Optionally, the calculation formula for calculating the deformation of the mechanical metamaterial cell is:

[0015]

[0016] Among them, Δx is the deformation of the mechanical metamaterial cell, K is the preset coefficient, V np is the output voltage of each mechanical metamaterial cell.

[0017] Optionally, the second acquisition module is further used to: perform sum processing on the deformation amount of each mechanical metamaterial cell to obtain the deformation amount of the mechanical metamaterial.

[0018] Optionally, the multiple mechanical metamaterial cells are connected in series.

[0019] Optionally, the thickness of the first thin beam is smaller than the thickness of the second thin beam.

[0020] In the above implementation, the triboelectric signal generated by the first thin beam and the second thin beam and the triboelectric electrode when each mechanical metamaterial cell is deformed is obtained, and the deformation of each mechanical metamaterial cell is calculated based on the measurement circuit using the preset sensor characteristic curve and the triboelectric signal, and the deformation of the mechanical metamaterial is obtained based on the deformation of each mechanical metamaterial cell. Thus, the problem that the existing mechanical metamaterial structure cannot achieve self-monitoring is solved, and it has the characteristics of self-monitoring, self-power supply, low cost, easy integration, etc., and realizes the integration of structure, function, perception, and control, which can be applied to energy, transportation, housing, electromechanical equipment and other fields, with a simple implementation process, low calculation difficulty and accurate detection.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 A flowchart of a method for monitoring structural deformation of a mechanical metamaterial based on triboelectricity according to an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a triboelectric self-monitoring mechanical metamaterial structure according to an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of a deformation sensing characteristic curve of a self-monitoring mechanical metamaterial according to an embodiment of the present invention;

[0026] Figure 4 is an exemplary diagram of a structural deformation monitoring device based on triboelectric mechanical metamaterial according to an embodiment of the present invention. Description of the drawings:

[0028] 10-Structural deformation monitoring device based on triboelectric mechanical metamaterial; 100-First acquisition module; 200-Calculation module; 300-Second acquisition module. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following describes the structural deformation monitoring method and device of mechanical metamaterial based on triboelectricity according to the embodiment of the present invention with reference to the accompanying drawings. In view of the problem that the existing mechanical metamaterial structure cannot realize self-monitoring mentioned in the background technology center, the present invention provides a structural deformation monitoring method of mechanical metamaterial based on triboelectricity. In this method, the triboelectric signal generated by the first thin beam and the second thin beam and the triboelectric electrode when each mechanical metamaterial cell is deformed is obtained, and the deformation of each mechanical metamaterial cell is calculated based on the measurement circuit using the preset sensing characteristic curve and the triboelectric signal, and the deformation of the mechanical metamaterial is obtained based on the deformation of each mechanical metamaterial cell. As a result, the problem that the existing mechanical metamaterial structure cannot realize self-monitoring is solved, and the method has the characteristics of self-monitoring, self-power supply, low cost, and easy integration, realizing the integration of structure, function, perception, and control, and can be applied to energy, transportation, housing, electromechanical equipment and other fields. The implementation process is simple, the calculation difficulty is low, and the detection is accurate.

[0031] Specifically, Figure 1 A schematic flow chart of a method for monitoring structural deformation of a triboelectric mechanical metamaterial provided in an embodiment of the present invention.

[0032] like Figure 1 As shown, the structural deformation monitoring method of the triboelectric mechanical metamaterial comprises the following steps:

[0033] Among them, the mechanical metamaterial is obtained by arranging a plurality of mechanical metamaterial cell arrays, and each mechanical metamaterial cell includes: a first thin beam, a triboelectric electrode, a second thin beam and a measurement circuit. The first thin beam and the triboelectric electrode form a friction pair, the second thin beam is used to support the first thin beam and the triboelectric electrode, and the measurement circuit is connected to the triboelectric electrode.

[0034] In step S101, the triboelectric signals generated by the first thin beam and the second thin beam and the triboelectric electrodes when each mechanical metamaterial cell is deformed are obtained.

[0035] In some embodiments, multiple mechanical metamaterial cells are connected in series.

[0036] In some embodiments, the thickness of the first thin beam is smaller than the thickness of the second thin beam.

[0037] In an embodiment of the present invention, the mechanical metamaterial is formed by an array of multiple triboelectric mechanical metamaterial cells, multiple mechanical metamaterial cells are connected in series, and each triboelectric mechanical metamaterial cell includes: a mechanical metamaterial structure and a triboelectric electrode. The mechanical metamaterial structure is composed of two upper and lower inclined beams with different thicknesses, namely, a first thin beam and a second thin beam, the thickness of the first thin beam is less than the thickness of the second thin beam, and the first thin beam is Figure 2The upper thin beam 1 is in the middle, which serves as a dielectric layer and forms a friction pair with the triboelectric electrode layer to form a single-electrode mode triboelectric nanogenerator. Figure 2 The lower thick beam 3 is used as the base layer to support the friction electrode 2 and the measurement circuit 4 connected thereto to form a self-monitoring method. Figure 2 As shown, the triboelectric electrode 2 is above the lower thick beam 3, and the upper thin beam 1 is above the triboelectric electrode 2. The upper thin beam 1 and the triboelectric electrode 3 constitute a triboelectric nanogenerator in a single-electrode mode.

[0038] When the mechanical metamaterial cell is subjected to external force, the upper thin beam will buckle first because its stiffness is smaller than that of the lower thick beam, and a deformation response will occur. It will bounce from the tilted state to the buckled state, showing a negative stiffness phenomenon and forming a negative stiffness area. After buckling, the upper thin beam contacts the triboelectric electrode layer. Due to the different electronegativity of the two materials, charge transfer occurs on the contact surface of the two materials. Different cells buckle in order from thin to thick according to the thickness of the thin beam, and a deformation response will occur. It will bounce from the tilted state to the buckled state, showing a negative stiffness phenomenon and forming a negative stiffness area. After buckling, the upper thin beam in each cell contacts the triboelectric electrode layer, and charge transfer occurs on the contact surface of the two materials.

[0039] When the external force is removed, the upper thin beam in each unit cell is restored and separated from the triboelectric electrode layer. The transferred charge is retained in the two materials, forming an electrostatic field between the two layers, resulting in an electric potential difference between the two layers and causing a triboelectric signal.

[0040] Therefore, since the thickness of the upper thin beams in each unit cell of the mechanical metamaterial is different, when the mechanical metamaterial as a whole is subjected to external force, the mechanical metamaterial will deform sequentially from thin to thick according to the thickness of the multiple thin beams, generating multiple negative stiffness regions. In the embodiment of the present invention, the mechanical metamaterial will deform sequentially from bottom to top.

[0041] In step S102, based on the measurement circuit, the deformation of each mechanical metamaterial cell is calculated using the preset sensing characteristic curve and the triboelectric signal.

[0042] Optionally, in some embodiments, based on a measurement circuit, the deformation of each mechanical metamaterial cell is calculated using a preset sensing characteristic curve and a friction electric signal, including: using a measurement circuit to detect the peak-to-peak value of the open circuit voltage between the friction electric electrode and the ground; and calculating the deformation of the mechanical metamaterial cell based on the peak-to-peak value of the open circuit voltage and a preset sensing characteristic curve.

[0043] Optionally, in some embodiments, the calculation formula for the deformation of the computational mechanics metamaterial cell is:

[0044]

[0045] Among them, Δx is the deformation of the mechanical metamaterial cell, K is the preset coefficient, V np is the output voltage of each mechanical metamaterial cell.

[0046] Among them, the preset sensing characteristic curve is as follows Figure 3 As shown, the preset sensing characteristic curve is obtained through experimental calibration after preparing the self-monitoring mechanical metamaterial with an upper thin beam, a triboelectric electrode, a lower thick beam and a measurement circuit.

[0047] It should be understood that when each mechanical metamaterial cell is deformed, a separate triboelectric signal is generated. The measurement circuit detects the peak-to-peak value of the open-circuit voltage between the triboelectric electrode layer and the ground point, that is, measures the output voltage of each mechanical metamaterial cell, and calculates the deformation of each mechanical metamaterial cell based on the output voltage of each mechanical metamaterial cell and the preset sensing characteristic curve.

[0048] The present invention takes a three-cell triboelectric metamaterial structure as an example. When the three cells are connected in series, the sensing characteristic curve of the top-to-bottom cells is V 1p =1.36Δx,V 2p =2.99Δx,V 3p =2.49Δx, then the deformation of each mechanical metamaterial cell is:

[0049] The deformation of the first mechanical metamaterial cell is

[0050] The deformation of the second mechanical metamaterial cell is

[0051] The deformation of the third mechanical metamaterial cell is

[0052] Among them, V 1p , V 2p , V 3p They represent the output voltages of the three mechanical metamaterial cells respectively, and Δx1, Δx2, and Δx3 represent the deformation of each mechanical metamaterial cell.

[0053] In step S103, the deformation of the mechanical metamaterial is obtained based on the deformation of each mechanical metamaterial cell.

[0054] Specifically, in some embodiments, the deformation amount of the mechanical metamaterial is obtained based on the deformation amount of each mechanical metamaterial cell, including: performing sum processing on the deformation amount of each mechanical metamaterial cell to obtain the deformation amount of the mechanical metamaterial.

[0055] It should be understood that the deformation of the mechanical metamaterial is the sum of the deformations of each cell of the mechanical metamaterial.

[0056] Taking the three-cell triboelectric metamaterial structure as an example, the sum of the triboelectric signals of each mechanical metamaterial cell is the overall triboelectric signal of the mechanical metamaterial structure. The sensing characteristic curve of the overall mechanical metamaterial structure is V 1p +V 2p +V 3p =6.85Δx, that is, the deformation of the mechanical metamaterial is Δx1+Δx2+Δx3.

[0057] According to the structural deformation monitoring method of mechanical metamaterial based on triboelectricity proposed in the embodiment of the present invention, the triboelectric signal generated by the first thin beam and the second thin beam and the triboelectric electrode when each mechanical metamaterial cell is deformed is obtained, and the deformation of each mechanical metamaterial cell is calculated based on the measurement circuit using the preset sensor characteristic curve and the triboelectric signal, and the deformation of the mechanical metamaterial is obtained based on the deformation of each mechanical metamaterial cell. Thus, the problem that the existing mechanical metamaterial structure cannot realize self-monitoring is solved, and it has the characteristics of self-monitoring, self-power supply, low cost, easy integration, etc., and realizes the integration of structure, function, perception, and control. It can be applied to energy, transportation, housing, electromechanical equipment and other fields, and the implementation process is simple, the calculation difficulty is low, and the detection is accurate.

[0058] Next, a structural deformation monitoring device based on triboelectric mechanical metamaterials proposed in accordance with an embodiment of the present invention will be described with reference to the accompanying drawings.

[0059] Figure 4 It is a block diagram of a structural deformation monitoring device based on triboelectric mechanical metamaterial according to an embodiment of the present invention.

[0060] like Figure 4 As shown, the structural deformation monitoring device 10 based on triboelectric mechanical metamaterial includes: a first acquisition module 100, a calculation module 200 and a second acquisition module 300.

[0061] The mechanical metamaterial is obtained by arranging a plurality of mechanical metamaterial cell arrays, each of which includes: a first thin beam, a triboelectric electrode, a second thin beam and a measurement circuit. The first thin beam and the triboelectric electrode form a friction pair, the second thin beam is used to support the first thin beam and the triboelectric electrode, and the measurement circuit is connected to the triboelectric electrode.

[0062] Among them, the first acquisition module 100 is used to obtain the friction electric signal generated by the first thin beam and the second thin beam and the friction electric electrode when each mechanical metamaterial cell is deformed; the calculation module 200 is used to calculate the deformation of each mechanical metamaterial cell based on the measurement circuit using the preset sensor characteristic curve and the friction electric signal; the second acquisition module 300 is used to obtain the deformation of the mechanical metamaterial based on the deformation of each mechanical metamaterial cell.

[0063] Optionally, in some embodiments, the calculation module 200 is further used to: detect the peak-to-peak value of the open circuit voltage between the friction electric electrode and the ground using a measurement circuit; and calculate the deformation of the mechanical metamaterial cell based on the peak-to-peak value of the open circuit voltage and a preset sensing characteristic curve.

[0064] Optionally, in some embodiments, the calculation formula for the deformation of the computational mechanics metamaterial cell is:

[0065]

[0066] Among them, Δx is the deformation of the mechanical metamaterial cell, K is the preset coefficient, V np is the output voltage of each mechanical metamaterial cell.

[0067] Optionally, in some embodiments, the second acquisition module 300 is further used to: perform sum processing on the deformation amount of each mechanical metamaterial cell to obtain the deformation amount of the mechanical metamaterial.

[0068] Optionally, in some embodiments, a plurality of mechanical metamaterial cells are connected in series.

[0069] Optionally, in some implementations, the thickness of the first thin beam is smaller than the thickness of the second thin beam.

[0070] It should be noted that the aforementioned explanation of the embodiment of the structural deformation monitoring method based on triboelectric mechanical metamaterial is also applicable to the structural deformation monitoring device based on triboelectric mechanical metamaterial of this embodiment, and will not be repeated here.

[0071] According to the structural deformation monitoring device of mechanical metamaterial based on triboelectricity proposed in the embodiment of the present invention, the triboelectric signal generated by the first thin beam and the second thin beam and the triboelectric electrode when each mechanical metamaterial cell is deformed is obtained, and the deformation of each mechanical metamaterial cell is calculated based on the measurement circuit using the preset sensing characteristic curve and the triboelectric signal, and the deformation of the mechanical metamaterial is obtained based on the deformation of each mechanical metamaterial cell. Thus, the problem that the existing mechanical metamaterial structure cannot realize self-monitoring is solved, and it has the characteristics of self-monitoring, self-power supply, low cost, easy integration, etc., realizing the integration of structure, function, perception, and control, and can be applied to energy, transportation, housing, electromechanical equipment and other fields, with a simple implementation process, low calculation difficulty and accurate detection.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0075] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

Claims

1. A method for monitoring structural deformation of mechanical metamaterials based on triboelectricity, characterized in that: The mechanical metamaterial is obtained by arranging a plurality of mechanical metamaterial cell arrays, each of which comprises: a first thin beam, a triboelectric electrode, a second thin beam and a measurement circuit, wherein the first thin beam and the triboelectric electrode form a friction pair, the second thin beam is used to support the first thin beam and the triboelectric electrode, and the measurement circuit is connected to the triboelectric electrode, wherein the method comprises the following steps: Acquire a triboelectric signal generated by the first thin beam, the second thin beam and the triboelectric electrode when each mechanical metamaterial cell is deformed; Based on the measurement circuit, the deformation of each mechanical metamaterial cell is calculated using a preset sensing characteristic curve and the triboelectric signal; Obtaining a deformation amount of the mechanical metamaterial based on a deformation amount of each mechanical metamaterial cell; The method of calculating the deformation of each mechanical metamaterial cell based on the measurement circuit using a preset sensing characteristic curve and the triboelectric signal comprises: using the measurement circuit to detect the peak-to-peak value of the open circuit voltage between the triboelectric electrode and the ground; and calculating the deformation of the mechanical metamaterial cell based on the peak-to-peak value of the open circuit voltage and the preset sensing characteristic curve. The calculation formula for calculating the deformation of the mechanical metamaterial cell is: Among them, Δx is the deformation of the mechanical metamaterial cell, K is the preset coefficient, V np is the output voltage of each mechanical metamaterial cell.

2. The structural deformation monitoring method of mechanical metamaterial based on triboelectricity according to claim 1 is characterized in that: The step of obtaining the deformation amount of the mechanical metamaterial based on the deformation amount of each mechanical metamaterial cell comprises: The deformation amount of each mechanical metamaterial cell is processed and the deformation amount of the mechanical metamaterial is obtained.

3. The structural deformation monitoring method of triboelectric mechanical metamaterial according to claim 1, characterized in that: The multiple mechanical metamaterial cells are connected in series.

4. The structural deformation monitoring method based on triboelectric mechanical metamaterial according to claim 1 is characterized in that: The thickness of the first thin beam is smaller than the thickness of the second thin beam.

5. A structural deformation monitoring device based on triboelectric mechanical metamaterial, characterized in that: The mechanical metamaterial is obtained by arranging a plurality of mechanical metamaterial cell arrays, each of which comprises: a first thin beam, a triboelectric electrode, a second thin beam and a measuring circuit, wherein the first thin beam and the triboelectric electrode form a friction pair, the second thin beam is used to support the first thin beam and the triboelectric electrode, the measuring circuit is connected to the triboelectric electrode, and the device comprises: A first acquisition module is used to acquire a triboelectric signal generated by the first thin beam, the second thin beam and the triboelectric electrode when each mechanical metamaterial cell is deformed; A calculation module, configured to calculate the deformation of each mechanical metamaterial cell based on the measurement circuit and using a preset sensing characteristic curve and the triboelectric signal; A second acquisition module, configured to obtain a deformation amount of the mechanical metamaterial based on a deformation amount of each mechanical metamaterial cell; The calculation module is further used to: detect the peak-to-peak value of the open circuit voltage between the triboelectric electrode and the ground using the measurement circuit; and calculate the deformation of the mechanical metamaterial cell based on the peak-to-peak value of the open circuit voltage and a preset sensing characteristic curve; The calculation formula for calculating the deformation of the mechanical metamaterial cell is: Among them, Δx is the deformation of the mechanical metamaterial cell, K is the preset coefficient, V np is the output voltage of each mechanical metamaterial cell.

6. The structural deformation monitoring device based on triboelectric mechanical metamaterial according to claim 5, characterized in that: The second acquisition module is further used for: The deformation amount of each mechanical metamaterial cell is processed and the deformation amount of the mechanical metamaterial is obtained.

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