Direct induction type electrostatic potential measurement sensor and method for determining structural parameters thereof

Abstract

The embodiment of the specification provides a direct induction type electrostatic potential measurement sensor and a method for determining structural parameters of the sensor. The sensor comprises a shielding cylinder arranged on a measured surface and penetratingly arranged; a ring-shaped induction electrode movably arranged in the shielding cylinder; an output end of the ring-shaped induction electrode connected with a charge amplifier and a signal conditioning circuit; and an output end of the charge amplifier and the signal conditioning circuit connected with a microcontroller. The electrostatic potential measurement sensor is arranged, an output signal of the electrostatic potential measurement sensor is obtained under the action of an electric field generated by the measured surface, and an analytical expression between the sensor output and the structural parameters is obtained by solving Laplace equation in a cylindrical coordinate system, thereby providing theoretical guidance for determining the structural parameters of the electrostatic potential measurement sensor.

Description

Technical Field

[0001] This document relates to the field of electrostatic potential testing technology, and in particular to a direct induction type electrostatic potential measuring sensor and a method for determining its structural parameters. Background Technology

[0002] Electrostatic potential is one of the most important electrostatic parameters, and measuring the electrostatic potential of charged bodies is a crucial task in electrostatic protection engineering. The direct induction method is the most basic method for measuring electrostatic potential. During the measurement process, structural parameters can affect the test results, such as the radius and height of the shielding cylinder, the radius of the induction electrode, and the distance between the induction electrode and the surface being measured. Currently, the determination of structural parameters relies entirely on experience; there are no quantitative analytical expressions to guide the better determination of the structural parameters of direct induction electrostatic potential measurement sensors. Summary of the Invention

[0003] This specification provides one or more embodiments of a direct-induction electrostatic potential measurement sensor, including:

[0004] A hollow shielding cylinder is placed on the surface being measured; a movable annular induction electrode is placed inside the shielding cylinder.

[0005] The output terminal of the ring-shaped induction electrode is connected to the charge amplifier and signal conditioning circuit via a wire;

[0006] The output of the charge amplifier and signal conditioning circuit is connected to a microcontroller.

[0007] Under the influence of an electric field generated on the surface being measured, induced charges are generated on the ring-shaped induction electrode. The induced charges are processed by a charge amplifier and a signal conditioning circuit, and then acquired by an AD converter and sent to a microcontroller. The microcontroller uses the received signal and the Laplace equation in cylindrical coordinates to solve the equation and obtain the model of the relationship between the output signal of the electrostatic potential measurement sensor and the structural parameters, thereby determining the structural parameters of the electrostatic potential measurement sensor.

[0008] In the above scheme, the relationship model between the output signal of the electrostatic potential measurement sensor and the structural parameters can be obtained by solving the Laplace equation as follows:

[0009]

[0010] Where E0 is the electric field on the lower surface of the shielding cylinder, d2 is the distance from the annular induction electrode to the bottom of the shielding cylinder, and r1 and r2 are the radii of the shielding cylinder and the annular induction electrode, respectively.

[0011] In the above scheme, the sensitivity of the electrostatic potential measurement sensor is proportional to the radius of the shielding cylinder and the radius of the annular induction electrode.

[0012] In the above scheme, the magnitude of the output signal of the electrostatic potential measurement sensor is related to the shielding depth;

[0013] in,

[0014] The shielding depth is determined by the radius of the shielding cylinder and the distance from the bottom of the shielding cylinder to the annular induction electrode.

[0015] In the above scheme, the radius of the annular induction electrode is 0.8 times the radius of the shielding cylinder.

[0016] In the above scheme, the distance between the bottom surface of the shielding cylinder and the annular induction electrode is 0.5 times the radius of the shielding cylinder.

[0017] In the above scheme, the output terminal of the ring-shaped induction electrode is connected to the charge amplifier and signal conditioning circuit through an aluminum alloy wire.

[0018] One or more embodiments of this specification also provide a method for determining the structural parameters of a direct-induction electrostatic potential measurement sensor based on any of the foregoing direct-induction electrostatic potential measurement sensors, including the following steps:

[0019] Confirm the structural parameters of each component of the direct induction electrostatic potential measurement sensor, including the electric field of the measured surface, the electric field at the lower end of the shielding tube, the distance between the bottom of the shielding tube and the measured surface, the distance from the annular induction electrode to the bottom of the shielding tube, the radius of the shielding tube, and the radius of the annular induction electrode.

[0020] Establish a cylindrical coordinate system; the origin of the coordinate system is taken as the center of the plane where the induction electrode is located, and the z-axis is downward along the axis of the cylinder;

[0021] By solving the Laplace equation in cylindrical coordinates using the structural parameters of each component, a relationship model between the output of the electrostatic potential measurement sensor and the structural parameters is obtained, thereby determining the structural parameters that affect the output of the electrostatic potential measurement sensor.

[0022] One or more embodiments of this specification also provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method for determining the structural parameters of a direct-induction electrostatic potential measurement sensor as described in any of the preceding embodiments.

[0023] One or more embodiments of this specification also provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method for determining the structural parameters of a direct-induction electrostatic potential measurement sensor as described in any of the preceding embodiments.

[0024] This invention utilizes an electrostatic potential measurement sensor to measure the electric field generated on the surface being measured. The sensor outputs an induced signal, which, after calibration, allows the electrostatic potential of the object to be obtained. Using the electric field on the object's surface as an initial condition, the relationship between the sensor's output signal (induced signal) and structural parameters can be derived by solving the Laplace equation. The relationship between the sensor's output and structural parameters is studied through analytical expressions and further visualization, thus providing theoretical guidance for determining the structural parameters of the electrostatic potential measurement sensor. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in one or more embodiments of this specification or in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the direct induction electrostatic potential measurement sensor provided in one or more embodiments of this specification;

[0027] Figure 2 A schematic diagram illustrating the principle of a direct-induction electrostatic potential measurement sensor provided in one or more embodiments of this specification;

[0028] Figure 3 A graph showing the relationship between the sensitivity of the electrostatic potential measurement sensor provided in one or more embodiments of this specification and r1 and r2;

[0029] Figure 4 This specification provides a graph showing the relationship between the output signal of the electrostatic potential measurement sensor and the shielding depth for one or more embodiments;

[0030] Figure 5 A flowchart illustrating a method for determining the structural parameters of a direct-induction electrostatic potential measurement sensor provided in one or more embodiments of this specification;

[0031] Figure 6 This is a schematic diagram of a computer device structure provided for one or more embodiments of this specification. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this document.

[0033] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0034] Sensor Examples

[0035] According to embodiments of the present invention, a direct-induction electrostatic potential measurement sensor is provided, such as... Figure 1-2 As shown in the figure, the direct induction electrostatic potential measurement sensor according to an embodiment of the present invention includes:

[0036] A shielding cylinder 2 is set on the surface 5 to be measured. The shielding cylinder 2 has a hollow structure.

[0037] An annular induction electrode 1 is movably disposed within the shielding cylinder 2;

[0038] The output terminal of the ring-shaped induction electrode 1 is connected to the charge amplifier and the signal conditioning circuit 3 through a wire; the wire can be a high-hardness wire, such as an aluminum alloy wire, to ensure that the ring-shaped induction electrode 1 can be suspended in the shielding cylinder 2.

[0039] In this embodiment, the charge amplifier and signal conditioning circuit 3 can be implemented using operational amplifier chips with high input impedance and low offset current, such as OPA128 or OPA111; the shielding cylinder 2 can be a cylindrical tube made of a high-hardness conductor material such as brass.

[0040] The output of charge amplifier and signal conditioning circuit 3 is connected to microcontroller 4;

[0041] In this sensor, the shielding cylinder 2 is used to shield the electric field generated by other charged bodies in the outside. Under the action of the electric field generated on the measured surface 5, an induced charge will be generated on the annular induction electrode 1. The induced charge is processed by the charge amplifier and the signal conditioning circuit 3 and then collected by AD and sent to the microcontroller 4. The microcontroller 4 uses the received signal and the Laplace equation in cylindrical coordinates to solve the equation and obtain the relationship model between the output signal of the electrostatic potential measurement sensor and the structural parameters, so as to determine the structural parameters of the electrostatic potential measurement sensor.

[0042] In this embodiment, the relationship between the output signal (induced signal) of the electrostatic potential measurement sensor and the structural parameters can be obtained by solving the Laplace equation as follows:

[0043]

[0044] Where E0 is the electric field on the lower surface of the shielding cylinder, d2 is the distance from the annular induction electrode to the bottom of the shielding cylinder, and r1 and r2 are the radii of the shielding cylinder and the annular induction electrode, respectively.

[0045] In this embodiment, the output of microcontroller 4 is connected to a computer. The relationship between the output signal of the electrostatic potential measurement sensor and the changes in various parameters is visually displayed using the mathematical software Mathematica; as shown in Figure 3- Figure 4 As shown, Figure 3 The graph shows the relationship between the sensitivity of the electrostatic potential measurement sensor and r1 and r2 when d2 is constant. Figure 4 The graph shows the relationship between the output signal of the electrostatic potential measurement sensor and the shielding depth. The shielding depth is related to the radius r1 of the shielding cylinder and the distance d2 from the bottom surface of the shielding cylinder to the sensing electrode, that is, it is jointly determined by the radius r1 of the shielding cylinder and the distance d2 from the bottom surface of the shielding cylinder to the sensing electrode.

[0046] In this preferred embodiment, r1 > r2, such as... Figure 3 As shown in the figure, the z-axis height and color change both represent the sensitivity (i.e., the output value Uo, such as...). Figure 3 , 4 The height of the Z-axis is used here to represent the influence of geometric parameters on the output. In fact, it is the relationship between the output value and r1 and r2 (the darker the color, the larger the output value Uo). When the radius r2 of the annular sensing electrode is 0, no matter how much the radius r1 of the shielding tube is increased, the sensitivity of the electrostatic potential measurement sensor will always be 0. When the radius of the sensing electrode is not 0, increasing the radius of the shielding tube or the radius of the annular sensing electrode can increase the sensitivity of the electrostatic potential measurement sensor, but the effect of increasing the radius of the shielding tube is relatively small.

[0047] Preferably, the electrostatic potential measurement sensor exhibits optimal sensitivity when r2 = 0.8r1. This is because, in practical situations, distributed capacitance is formed between the charged object being measured, the shielding cylinder, and the induction electrode. These two capacitances are connected in parallel with the charged object, leading to a smaller Uo value in the test result. To ensure test accuracy, the geometric dimensions of the test probe should be minimized. In the actual design of the electrostatic potential measurement sensor, the dimensions of the main charged object being measured and its capacitance to ground should be comprehensively considered to select a suitable shielding cylinder size. Then, the radius of the annular induction electrode should be 0.8 times the radius of the shielding cylinder.

[0048] Preferred, such as Figure 4As shown, the shielding depth is jointly determined by the radius r1 of the shielding cylinder and the distance d2 from the bottom surface of the shielding cylinder to the annular induction electrode. When r1 is constant, the larger d2 is, the deeper the shielding depth; when d2 is constant, the smaller r1 is, the deeper the shielding depth. The influence of r1 and d2 on the output of the electrostatic potential measurement sensor is as follows: Figure 4 As shown, when the shielding cylinder radius r1 is fixed, as d2 increases, the shielding depth increases, and the output value Uo of the electrostatic potential measurement sensor decreases; when d2 is fixed, as r1 decreases, the shielding depth also increases, and the output of the electrostatic potential measurement sensor also decreases. After determining the shielding cylinder radius r1, taking d2 = 0.5r1 results in a better shielding effect and a larger signal output.

[0049] In this embodiment, an electrostatic potential measurement sensor is used to measure the electric field generated on the surface being measured. The sensor outputs an induced signal, which, after calibration, allows the electrostatic potential of the object to be obtained. Using the electric field Eh on the object's surface as an initial condition, the Laplace equation is solved to derive a model relating the output signal (induced signal) of the electrostatic potential measurement sensor to the structural parameters. The independent variables in the equation are the geometric parameters. Through analytical expressions and further visualization, the relationship between the sensor's output and the structural parameters is studied, thus providing theoretical guidance for determining the structural parameters of the electrostatic potential measurement sensor.

[0050] Method Implementation Examples

[0051] According to embodiments of the present invention, a method for determining the structural parameters of a direct-induction electrostatic potential measurement sensor based on the above-described direct-induction electrostatic potential measurement sensor is provided, such as... Figure 5 As shown, the method for determining the structural parameters of a direct-induction electrostatic potential measurement sensor according to an embodiment of the present invention includes:

[0052] S1. Confirm the structural parameters of each component of the direct induction electrostatic potential measurement sensor, including the electric field E of the measured surface. h The electric field at the lower end of the shielding cylinder is E0, the distance between the bottom end of the shielding cylinder and the surface being measured is d1, the distance from the annular induction electrode to the bottom end of the shielding cylinder is d2, and the radii of the shielding cylinder and the annular induction electrode are r1 and r2.

[0053] S2. Establish a cylindrical coordinate system; the origin of the coordinate system is taken as the center of the plane where the induction electrode is located, and the z-axis is downward along the axis of the cylinder.

[0054] S3. By solving the Laplace equation in cylindrical coordinates using the structural parameters of each component, the relationship model between the output of the electrostatic potential measurement sensor and the structural parameters is obtained, thereby determining the structural parameters that affect the output of the electrostatic potential measurement sensor.

[0055] In this embodiment, the analysis process of the relationship model between sensor output and structural parameters is as follows:

[0056] refer to Figure 2 As shown, assume that an electric field E is generated on the surface being measured. h The electric field on the lower surface of the shielding cylinder is E0, and d1 and d2 are the distances between the bottom surface of the shielding cylinder and the measured surface and the sensing electrode, respectively. When d1 is very small relative to the sensor size, E0 and E h Approximately equal, the radii of the shielding cylinder and the circular induction electrode are r1 and r2 respectively, and the charge induced on the induction electrode is positive or negative Q. e If the lower surface is induced with a negative charge, then the input terminal of the charge amplifier is +Q. e .

[0057] Establish a cylindrical coordinate system, with the origin at the center of the plane containing the induction electrode, and the z-axis pointing downwards along the axis of the cylinder. In this practical problem, free charges only appear on the measured surface and the surface of the induction electrode; there are no free charge distributions within the solution domain. Therefore, the electrostatic field satisfies Laplace's equation. Based on knowledge of calculus, the expression for the Laplace equation in cylindrical coordinates is:

[0058]

[0059] Separate variable form Substituting into equation (1), we get

[0060]

[0061] Multiplying both sides of the equation by r 2 / RΦZ and rearrange the terms to get

[0062]

[0063] Equation (3) has a left-hand side that is a function of r and z, independent of θ; and a right-hand side that is a function of θ, independent of r and z. The two sides being identical can only be equal to the same constant, denoted as λ. Therefore, equation (3) can be decomposed into two equations:

[0064] Φ″+λΦ=0 (4)

[0065]

[0066] Since the desired potential is independent of θ, λ = 0, and equation (3-5) can be transformed into

[0067]

[0068] The left side is a function of r, and the right side is a function of z. The two can only be equal to the same constant, which is denoted as -μ. Equation (6) is decomposed into two ordinary differential equations:

[0069] Z″-μZ=0 (7)

[0070]

[0071] In equations (7)-(8), the form of the solution differs depending on the value of μ, as detailed below:

[0072] (a) When μ = 0, we get

[0073] Z(z) = Az + B

[0074] R(r) = C ln r + D

[0075] (b) When μ>0, we can solve equation (7) to get

[0076]

[0077] For equation (8), perform variable substitution. The equation then becomes

[0078]

[0079] Equation (9) is the 0th order Bessel equation, and its solution is:

[0080] R(x)=CJ0(x)+DN0(x) (10)

[0081] Where J0(x) and N0(x) are the 0th-order Bessel function and the 0th-order Neumann function, respectively, the solution to equation (8) is:

[0082]

[0083] (c) When μ < 0, we can solve equation (7) to get

[0084]

[0085] Equation (8) can be transformed into the imaginary argument Bessel equation.

[0086]

[0087] Its solution is

[0088]

[0089] Because the practical problem under study has homogeneous boundary conditions on the lateral side of the cylindrical region, the case of μ < 0 can be ruled out; furthermore, since the potential along the axis should be a finite value and not a constant, the case of μ = 0 can be ruled out. Therefore, under this practical problem, μ > 0 should be taken, and the general solution for the potential in the solution domain is:

[0090]

[0091] (2) Boundary conditions

[0092]

[0093] The solution domain is inside the shielding cylinder, satisfying 0≤r≤r1, 0≤z≤d2; the inductive electrode is grounded, i.e., equation (16) (a) is substituted into the general solution (15), resulting in B=-A; from equation (16)(b), the condition that the potential is a finite value on the axis can be discarded, i.e., D=0; substituting equation (16)(c) into the general solution (15), i.e.

[0094]

[0095] Based on the properties and zero characteristics of the Bessel function, we can solve for...

[0096]

[0097] In the formula, x n (0) It is the nth positive zero of J0(x).

[0098] In summary, the general solution determined by the homogeneous boundary conditions is:

[0099]

[0100] In the formula, the undetermined coefficient A n =AC, determined by the non-homogeneous boundary condition (16)(d) (the positive z-axis direction is opposite to the electric field direction, so there is no negative sign), substituting the general solution into (16)(d), we get

[0101]

[0102] On the interval [0, r1], with Using E0 as a basis, perform a Fourier-Bessel series expansion.

[0103]

[0104] Where the coefficient

[0105]

[0106] Substituting equation (21) into equation (20) and comparing the coefficients with those in equation (19), we can obtain...

[0107]

[0108] A n Substituting into equation (18), we obtain the potential distribution inside the shielding cylinder:

[0109]

[0110] The induced charges on the annular induction electrode are concentrated on the lower surface of the electrode (z = 0, 0 < r < r2), and the total induced charge can be obtained by Gauss's theorem:

[0111]

[0112] After passing through the charge amplification circuit, the output signal of the sensor is:

[0113]

[0114] Equation (25) is the relationship model between the output signal of the electrostatic potential measurement sensor and the structural parameters. It can be seen that the output signal of the electrostatic potential measurement sensor is related to the radius r1 of the shielding cylinder, the radius r2 of the induction electrode, and the distance d2 from the bottom end of the shielding cylinder to the annular induction electrode.

[0115] As Figure 6 shown, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the method for determining the structural parameters of the direct induction type electrostatic potential measurement sensor in the above embodiments, or when the computer program is executed by a processor, it implements the method for determining the structural parameters of the direct induction type electrostatic potential measurement sensor in the above embodiments.

[0116] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memories. Non-volatile memories can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memories can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0117] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for apparatus or system embodiments, since they are basically similar to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments. The apparatus and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A direct-induction electrostatic potential measurement sensor, characterized in that, include: A hollow shielding cylinder is placed on the surface being measured; a movable annular induction electrode is placed inside the shielding cylinder. The output terminal of the ring-shaped induction electrode is connected to the charge amplifier and signal conditioning circuit via a wire; The output of the charge amplifier and signal conditioning circuit is connected to a microcontroller. Under the influence of an electric field generated on the surface being measured, induced charges are generated on the ring-shaped induction electrode. The induced charges are processed by a charge amplifier and a signal conditioning circuit, and then acquired by an AD converter and sent to a microcontroller. The microcontroller uses the received signal and the Laplace equation in cylindrical coordinates to solve the equation and obtain the model of the relationship between the output signal of the electrostatic potential measurement sensor and the structural parameters, and determines the structural parameters of the electrostatic potential measurement sensor. By solving the Laplace equation, the relationship between the output signal and structural parameters of the electrostatic potential measurement sensor can be obtained as follows: Where E0 is the electric field on the lower surface of the shielding cylinder, d2 is the distance from the annular induction electrode to the bottom of the shielding cylinder, and r1 and r2 are the radii of the shielding cylinder and the annular induction electrode, respectively. yes The n A positive zero point; It is represented as a 0th-order Bessel function, where n = 1, 2, 3, ..., and represents the ordinal number.

2. The direct induction electrostatic potential measurement sensor as described in claim 1, characterized in that, The sensitivity of the electrostatic potential measurement sensor is proportional to the radius of the shielding cylinder and the radius of the annular induction electrode.

3. The direct induction electrostatic potential measurement sensor as described in claim 1, characterized in that, The magnitude of the output signal from the electrostatic potential measurement sensor is related to the shielding depth; wherein... The shielding depth is determined by the radius of the shielding cylinder and the distance from the bottom of the shielding cylinder to the annular induction electrode.

4. The direct induction electrostatic potential measurement sensor as described in claim 2, characterized in that, The radius of the annular induction electrode is 0.8 times the radius of the shielding cylinder.

5. The direct induction electrostatic potential measurement sensor as described in claim 3, characterized in that, The distance between the bottom surface of the shielding cylinder and the annular induction electrode is 0.5 times the radius of the shielding cylinder.

6. The direct induction electrostatic potential measurement sensor as described in claim 3, characterized in that, The The output terminal of the ring-shaped induction electrode is connected to the charge amplifier and signal conditioning circuit via an aluminum alloy wire.

7. A method for determining the structural parameters of a direct-induction electrostatic potential measuring sensor based on any one of claims 1-6, characterized in that, Including steps: Confirm the structural parameters of each component of the direct induction electrostatic potential measurement sensor, including the electric field of the measured surface, the electric field at the lower end of the shielding tube, the distance between the bottom of the shielding tube and the measured surface, the distance from the annular induction electrode to the bottom of the shielding tube, the radius of the shielding tube, and the radius of the annular induction electrode. Establish a cylindrical coordinate system; the origin of the coordinate system is taken as the center of the plane where the induction electrode is located, and the z-axis is downward along the axis of the cylinder; By solving the Laplace equation in cylindrical coordinates using the structural parameters of each component, a relationship model between the output of the electrostatic potential measurement sensor and the structural parameters is obtained, thereby determining the structural parameters that affect the output of the electrostatic potential measurement sensor.

8. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method for determining the structural parameters of the direct-induction electrostatic potential measurement sensor as described in claim 7.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the method for determining the structural parameters of the direct induction electrostatic potential measurement sensor as described in claim 7.

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