A method, system, device and medium for determining grounding grid topology

Abstract

The present invention discloses a method, system, device and medium for determining the topological structure of a grounding grid, which are applied to a computing control component, determine a detection area according to trigger information, and move an electromagnetic excitation component and a plurality of detectors to the detection area for detection. A preset function signal is used to excite the electromagnetic excitation component, and a Rayleigh wave of a corresponding frequency is output. The time difference between the Rayleigh waves detected by each two adjacent detectors is calculated by a data acquisition component. The electromagnetic excitation component and a plurality of detectors are moved at a preset distance in the detection area to obtain a corresponding set of time differences, and the topological structure of the grounding grid is determined in combination with the corresponding Rayleigh wave frequency. The technical problem that the accuracy of the obtained grounding grid topological structure is low due to electromagnetic interference in the process of obtaining the grounding grid topological structure using the existing electromagnetic method is solved. Rayleigh waves of corresponding frequencies can be output, and detection can be performed after moving at a preset distance to obtain a grounding grid topological structure with high accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of grounding grid topology structure detection, and in particular to a grounding grid topology structure determination method, system, equipment and medium. Background Art

[0002] In order to ensure the safe operation of power equipment in places such as power stations, it is necessary to set up corresponding grounding grids for the equipment to ensure that the equipment is at the same potential as the earth during operation. Most grounding grids are mainly made of metal materials such as flat steel and buried in the soil. Since metal materials in the soil will be affected by factors such as soil temperature, soil oxygen content, and humidity, they will cause corrosion, which will reduce the electrical performance of the grounding grid, thereby causing the current dispersion performance of the grounding grid to deteriorate. Therefore, in order to detect the corrosion of the grounding grid, it is necessary to obtain the grounding grid topology.

[0003] Since most of the power stations in my country have been in operation for more than 20 years, their grounding grid topology structures have mostly been updated or new flat steels have been buried on the original basis. Therefore, their grounding grid topology structures are mostly multi-layer grounding grid topology structures.

[0004] At present, electromagnetic method is mainly used to obtain the topological structure of grounding grid. However, due to the fact that places with concentrated power equipment such as power stations will generate a variety of electromagnetic interference sources, it is easy to cause unsatisfactory electromagnetic signal detection results. Especially for multi-layer grounding grid topological structure, the electromagnetic signal of the lower grounding grid topological structure is easily submerged by the electromagnetic signal of the upper grounding grid topological structure. Therefore, in the process of obtaining the topological structure of grounding grid by electromagnetic method, the obtained grounding grid topological structure will be affected by electromagnetic interference, resulting in low accuracy of the obtained grounding grid topological structure. Summary of the invention

[0005] The present invention provides a method, system, device and medium for determining a grounding grid topology structure, which solves the technical problem that the accuracy of the obtained grounding grid topology structure is low due to electromagnetic interference during the process of obtaining the grounding grid topology structure using the existing electromagnetic method.

[0006] A method for determining a grounding grid topology structure provided by the present invention is applied to a computing control component, wherein the computing control component is respectively connected to an electromagnetic excitation component and a data acquisition component for communication, and the data acquisition component is electrically connected to a plurality of detectors. The method comprises:

[0007] In response to the received trigger information, determining a detection area according to the trigger information, and moving the electromagnetic excitation assembly and the plurality of detectors to a first starting boundary corresponding to the detection area;

[0008] Using a preset function signal to excite the electromagnetic excitation component to output Rayleigh waves of corresponding frequencies;

[0009] By means of the data acquisition component, the time difference between each two adjacent detectors detecting the Rayleigh waves is calculated to obtain a set of time difference values ​​corresponding to the first starting boundary;

[0010] Moving the electromagnetic excitation assembly and the plurality of detectors at a preset distance from the first starting boundary;

[0011] Jump to execute the step of exciting the electromagnetic excitation component by using a preset function signal until a set of time difference values ​​corresponding to a first termination boundary of the detection area is obtained;

[0012] The grounding grid topology is determined according to the time difference values ​​in each of the time difference value sets and the frequency points of the corresponding Rayleigh waves.

[0013] Optionally, before the step of determining the grounding grid topology structure according to the time difference values ​​in each of the time difference value sets and the frequency points of the corresponding Rayleigh waves, the step further includes:

[0014] Moving the electromagnetic excitation assembly and the plurality of detectors to a second starting boundary perpendicular to the first starting boundary;

[0015] Jump to execute the step of exciting the electromagnetic excitation component by using a preset function signal;

[0016] When the time difference set corresponding to the second starting boundary is obtained, moving the electromagnetic excitation component and the plurality of detectors from the second starting boundary according to the preset distance;

[0017] Jump to execute the step of exciting the electromagnetic excitation component with a preset function signal until a set of time difference values ​​corresponding to the second termination boundary of the detection area is obtained.

[0018] Optionally, the electromagnetic excitation component includes a power amplifier circuit and an electromagnetic exciter; the step of using a preset function signal to excite the electromagnetic excitation component to output Rayleigh waves of corresponding frequencies includes:

[0019] Transmitting a preset function signal to the power amplifier circuit to output an amplified function signal;

[0020] The electromagnetic exciter is excited from the first preset frequency point by frequency point using the amplified function signal to output Rayleigh waves of corresponding frequencies until the excited frequency point is the second preset frequency point.

[0021] Optionally, the step of determining the topology of the grounding grid according to the time difference values ​​in each of the time difference value sets and the frequency points of the corresponding Rayleigh waves includes:

[0022] Converting the time difference values ​​in each of the time difference value sets into corresponding wave speeds;

[0023] A dispersion curve is constructed by taking the frequency corresponding to the frequency point of the Rayleigh wave as the ordinate and the wave velocity as the abscissa;

[0024] converting the dispersion curve into a depth-velocity curve;

[0025] The depth-wave velocity curve is analyzed to determine the grounding grid topology.

[0026] Optionally, the step of converting the dispersion curve into a depth-velocity curve comprises:

[0027] Calculating the wavelength of the Rayleigh wave according to the wave speed and the frequency of the Rayleigh wave;

[0028] Using the wave speed as the ordinate and the wavelength corresponding to the Rayleigh wave as the abscissa, a wave speed-wavelength curve is constructed;

[0029] According to the wave velocity-wavelength curve and the wavelength-depth conversion coefficient, a depth-wave velocity curve is constructed with depth as the ordinate and the wave velocity as the abscissa.

[0030] Optionally, the step of analyzing the depth-wave velocity curve to determine the grounding grid topology structure includes:

[0031] Analyze the depth-wave speed curve, obtain a wave speed different from the rated wave speed corresponding to the frequency as a target wave speed, and use the depth corresponding to the target wave speed as the flat steel depth corresponding to the flat steel;

[0032] The grounding grid topology is determined according to the flat steel depth and the layout positions of two adjacent detectors.

[0033] Optionally, the step of determining the grounding grid topology structure according to the flat steel depth and the layout positions of two adjacent detectors includes:

[0034] Taking the flat steel depth as the point ordinate and the layout position as the point abscissa, the grounding grid point corresponding to the flat steel is obtained;

[0035] The adjacent grounding grid points are connected to obtain a grounding grid topology structure.

[0036] The present invention also provides a grounding grid topology determination system, which is applied to a computing control component, wherein the computing control component is respectively connected to an electromagnetic excitation component and a data acquisition component for communication, and the data acquisition component is electrically connected to a plurality of detectors. The system comprises:

[0037] An information response and movement module, used to respond to the received trigger information, determine the detection area according to the trigger information, and move the electromagnetic excitation component and the plurality of detectors to a first starting boundary corresponding to the detection area;

[0038] A Rayleigh wave output module, used to excite the electromagnetic excitation component with a preset function signal and output a Rayleigh wave of a corresponding frequency point;

[0039] A time difference calculation module, used to calculate the time difference between each two adjacent detectors detecting the Rayleigh waves through the data acquisition component, and obtain a time difference set corresponding to the first starting boundary;

[0040] A first moving module, used for moving the electromagnetic excitation assembly and the plurality of detectors according to a preset distance from the first starting boundary;

[0041] A first jump execution module, used for jumping to execute the step of exciting the electromagnetic excitation component by using a preset function signal until a set of time difference values ​​corresponding to a first termination boundary of the detection area is obtained;

[0042] The topology structure determination module is used to determine the grounding grid topology structure according to the time difference values ​​in each of the time difference value sets and the frequency points corresponding to the Rayleigh waves.

[0043] The present invention also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of implementing any of the above-mentioned methods for determining the grounding grid topology structure.

[0044] The present invention also provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed, any of the above-mentioned methods for determining a grounding grid topology structure is implemented.

[0045] It can be seen from the above technical solutions that the present invention has the following advantages:

[0046] The present invention responds to the received trigger information and then determines the detection area with the trigger information. The electromagnetic excitation component and multiple detectors are moved to the first starting boundary corresponding to the detection area, and the electromagnetic excitation component is excited by a preset function signal to output the Rayleigh wave of the corresponding frequency point. Then, the time difference between the Rayleigh waves detected by each two adjacent detectors is calculated by the data acquisition component to obtain the time difference set corresponding to the first starting boundary. The electromagnetic exciter and multiple detectors are moved according to the preset distance from the first starting boundary, and the corresponding time difference set is obtained according to the above steps. When the time difference set corresponding to the first ending boundary of the detection area is obtained, the grounding grid topology structure is determined according to the time difference in each time difference set and the frequency point of the corresponding Rayleigh wave. Thereby solving the technical problem that the accuracy of the obtained grounding grid topology structure is low due to electromagnetic interference in the process of obtaining the grounding grid topology structure by the existing electromagnetic method. The present invention can output the Rayleigh wave of the corresponding frequency point required for detection, and detect it after moving in the detection area in combination with the preset distance, so as to obtain a grounding grid topology structure with high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0048] Figure 1 A flowchart of the steps of a method for determining a grounding grid topology structure provided in Embodiment 1 of the present invention;

[0049] Figure 2 A schematic diagram of the change in wave velocity of Rayleigh waves when there is no flat steel in the underground medium between adjacent geophones provided in the first embodiment of the present invention;

[0050] Figure 3 A schematic diagram of the change in wave velocity of Rayleigh waves when there is flat steel in the underground medium between adjacent geophones provided in the first embodiment of the present invention;

[0051] Figure 4 A flowchart of the steps of a method for determining a grounding grid topology structure provided in Embodiment 2 of the present invention;

[0052] Figure 5 A schematic diagram of the structure of the equipment connection in a method for determining a grounding grid topology structure provided in the second embodiment of the present invention;

[0053] Figure 6 A schematic diagram of a layout and movement direction of an electromagnetic exciter and a detector provided in the second embodiment of the present invention

[0054] Figure 7 A schematic diagram of another arrangement and movement direction of the electromagnetic exciter and detector provided in the second embodiment of the present invention;

[0055] Figure 8 A structural block diagram of a grounding grid topology determination system provided in Embodiment 3 of the present invention;

[0056] Fig. 9 A structural block diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0057] The embodiments of the present invention provide a method, system, device and medium for determining a grounding grid topology structure, which are used to solve the technical problem that the accuracy of the obtained grounding grid topology structure is low due to electromagnetic interference in the process of obtaining the grounding grid topology structure using the existing electromagnetic method.

[0058] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] See also Figure 1 , Figure 1 A flowchart of the steps of a method for determining a grounding grid topology structure provided by an embodiment of the present invention.

[0060] A method for determining a grounding grid topology structure provided by the present invention is applied to a computing control component, wherein the computing control component is respectively connected to an electromagnetic excitation component and a data acquisition component for communication, and the data acquisition component is electrically connected to a plurality of detectors, and comprises the following steps:

[0061] Step 101 , responding to received trigger information, determining a detection area according to the trigger information, and moving an electromagnetic excitation assembly and a plurality of detectors to a first starting boundary corresponding to the detection area.

[0062] Trigger information refers to the information sent by the client, including the setting conditions of the detection area, electromagnetic excitation components and multiple detectors, preset frequency information and preset function signals. The detection area refers to the area where the grounding grid topology structure needs to be obtained. The first starting boundary refers to the boundary between the detection area and other areas. The preset function signal refers to the signal that can excite the electromagnetic exciter to generate the corresponding frequency Rayleigh wave required for detection.

[0063] The electromagnetic excitation component refers to a device that can process a function signal and generate Rayleigh waves of corresponding frequencies according to the excitation of the function signal. The electromagnetic excitation component may include a power amplifier circuit and an electromagnetic exciter.

[0064] In the embodiment of the present invention, when the computer control component receives the trigger information, the trigger information is used to determine the detection area to be detected and the corresponding first starting boundary, and the electromagnetic excitation component and the multiple detectors are moved to the first starting boundary, and the electromagnetic exciter and the multiple detectors are placed on the same horizontal line. The distance between each adjacent detector is the same preset spacing, and the size of the preset spacing can be appropriately reduced in combination with the detection needs, thereby improving the detection accuracy.

[0065] Step 102: Use a preset function signal to excite the electromagnetic excitation component to output Rayleigh waves of corresponding frequencies.

[0066] The preset function signal refers to the function signal set according to the Rayleigh wave frequency required for detection. Rayleigh wave is a surface wave. When propagating in a semi-space body, Rayleigh wave propagates along the surface of the ground. The wave velocity of Rayleigh wave varies depending on the geological structure. Therefore, the propagation characteristics of Rayleigh wave of the same wavelength reflect the horizontal changes of geological conditions. The propagation characteristics of Rayleigh wave of different wavelengths reflect the geological conditions at different depths. The higher the frequency, the shallower the detection depth.

[0067] Frequency point refers to the specific absolute frequency value, which is the number given to the fixed frequency. The setting of the fixed frequency corresponding to the frequency point is determined by the Rayleigh wave velocity in the specific soil and the thickness of the flat steel.

[0068] For example: Flat steel is usually buried below 0.7 meters. After obtaining the Rayleigh wave velocity in the soil, assuming that the detection starts from 10 cm below the ground, the formula v = λf, where f is the Rayleigh wave frequency and λ is the Rayleigh wave wavelength, can determine the frequency corresponding to λ = 10 cm and set it to the corresponding frequency point. The frequency then increases at a certain interval, and the interval size is determined by the size of the flat steel. Assuming that the maximum buried depth of the flat steel is H and the thickness of the flat steel is d, the formula v = λf shows that the Rayleigh wave detection frequency corresponding to the upper surface of the flat steel is The Rayleigh wave detection frequency corresponding to the lower surface of the flat steel is In order for Rayleigh waves to pass through the flat steel, the frequency change interval should be smaller than the difference between the two frequencies to obtain a frequency point that can pass through the flat steel.

[0069] In the embodiment of the present invention, the Rayleigh wave frequencies corresponding to the detection depth are numbered according to the Rayleigh wave velocity in the soil and the thickness of the flat steel to obtain the corresponding frequency points. The preset function signal is determined by detecting the required frequency points. When the preset function signal is transmitted to the electromagnetic excitation component for excitation, the Rayleigh wave of the corresponding frequency point is generated, so that the Rayleigh wave propagates to the soil depth required for detection, and the medium information of the soil depth is detected.

[0070] Step 103: Calculate the time difference between the Rayleigh waves detected by every two adjacent detectors through the data acquisition component to obtain a set of time difference values ​​corresponding to the first starting boundary.

[0071] The data acquisition component refers to a device used to obtain the data of Rayleigh waves detected by the detector and to process the data. The time difference refers to the time difference between two adjacent detectors detecting the same Rayleigh wave.

[0072] In an embodiment of the present invention, the data acquisition component simultaneously acquires Rayleigh wave signals detected by multiple detectors, filters the acquired Rayleigh wave signals, and calculates the time difference between every two adjacent detectors detecting the same Rayleigh wave, to obtain a set of time difference values ​​between each adjacent detector at the first starting boundary.

[0073] Step 104: Move the electromagnetic excitation assembly and the plurality of detectors from the first starting boundary according to a preset distance.

[0074] The preset distance refers to the distance that the electromagnetic excitation component and multiple detectors are moved in horizontal, vertical and other directions based on the detection needs of the detection area. The smaller the preset distance, the higher the detection accuracy.

[0075] In an embodiment of the present invention, after the electromagnetic excitation component and multiple detectors complete the detection task at the first starting boundary and obtain the corresponding time difference combination, the electromagnetic excitation component and multiple detectors are moved at a preset distance in the detection area along a direction parallel to the first starting boundary to perform the next step of detection.

[0076] Step 105 : Jump to the step of exciting the electromagnetic excitation component with a preset function signal until a set of time difference values ​​corresponding to the first termination boundary of the detection area is obtained.

[0077] The first end boundary refers to a boundary line opposite to the first start boundary based on the detection area.

[0078] In an embodiment of the present invention, after the electromagnetic excitation component and the plurality of detectors are moved according to a preset distance, the computing control component again uses trigger information to output a preset function signal to excite the electromagnetic excitation component, output Rayleigh waves of corresponding frequencies, and detect the medium distribution of the soil depth corresponding to the frequencies. The Rayleigh waves detected by each adjacent detector are processed by the data acquisition component to obtain a corresponding time difference set. The above steps are repeated until the time difference set corresponding to the first termination boundary of the detection area is obtained, and then the detection is stopped.

[0079] Step 106: Determine the grounding grid topology structure according to the time difference values ​​in each time difference value set and the frequency point of the corresponding Rayleigh wave.

[0080] The grounding grid topology refers to the physical layout of multiple flat steel bars buried at a certain depth underground and connected to each other.

[0081] In the embodiment of the present invention, the time difference in each time difference set is analyzed in combination with the layout positions of the electromagnetic excitation assembly and multiple detectors to obtain the horizontal coordinate position corresponding to the change in Rayleigh wave velocity. The depth reached by the Rayleigh wave is determined by the corresponding frequency point, and the vertical coordinate position corresponding to the change in Rayleigh wave velocity is obtained. The grounding grid topology corresponding to the detection area is determined by combining the horizontal coordinate position and the vertical coordinate position corresponding to the change in Rayleigh wave velocity.

[0082] For example, there is a variable frequency electromagnetic excitation component. Detectors are arranged at a certain interval Δx along the direction of wave propagation. The distance between the two adjacent detectors can be called the detection range. The Rayleigh wave velocity can be obtained by the distance Δx between the two adjacent detectors and the corresponding time difference Δt between the two detectors when the Rayleigh wave is detected. Therefore, the average Rayleigh wave velocity between the two adjacent detectors can be expressed as In order to fully study the distribution of underground materials, detection is carried out from shallow to deep.

[0083] The dispersion curve of a certain adjacent detector at the soil surface measuring point is used to obtain the Rayleigh wave velocity by using the Rayleigh wave frequency and the time difference between the adjacent detectors detecting the Rayleigh wave. Combined with the Rayleigh wave frequency, the Rayleigh wave wavelength is obtained. Since Rayleigh waves can detect the underground at the corresponding wavelength depth, combined with the wavelength-to-depth conversion coefficient k p =0.65, convert wavelength into depth, with depth as the ordinate and Rayleigh wave velocity as the abscissa. Since the density of flat steel is greater than that of soil, if there is flat steel underground between adjacent detectors, its dispersion curve will have a high-speed area at the corresponding depth of the flat steel, thereby obtaining the buried depth of the flat steel. If there is no flat steel, the dispersion curve will change more steadily with the depth downward.

[0084] like Figure 2As shown in the figure, as the depth goes down, the Rayleigh wave velocity is relatively stable, indicating that the underground medium between adjacent detectors is relatively evenly distributed and there is no area with abnormal increase in Rayleigh wave velocity.

[0085] like Figure 3 As shown, the Rayleigh wave velocity increases at depths of about 0.7 m and 1.6 m, indicating that the underground medium density between adjacent detectors is relatively high at these two locations and flat steel exists.

[0086] In an embodiment of the present invention, by responding to the received trigger information, the detection area is determined by the trigger information. The electromagnetic excitation component and multiple detectors are moved to the first starting boundary corresponding to the detection area, and the electromagnetic excitation component is excited by a preset function signal to output the Rayleigh wave of the corresponding frequency point. Then, the time difference between the Rayleigh waves detected by each two adjacent detectors is calculated by the data acquisition component to obtain the time difference set corresponding to the first starting boundary. The electromagnetic exciter and multiple detectors are moved according to the preset distance from the first starting boundary, and the corresponding time difference set is obtained according to the above steps. When the time difference set corresponding to the first ending boundary of the detection area is obtained, the grounding grid topology structure is determined according to the time difference in each time difference set and the frequency point of the corresponding Rayleigh wave. Thereby solving the technical problem that the accuracy of the obtained grounding grid topology structure is low due to electromagnetic interference in the process of obtaining the grounding grid topology structure by the existing electromagnetic method. The present invention can output the Rayleigh wave of the corresponding frequency point required for detection, and detect it after moving in the detection area in combination with the preset distance, so as to obtain a grounding grid topology structure with high accuracy.

[0087] See also Figure 4 , Figure 4 A flowchart of the steps of a method for determining a grounding grid topology structure provided in Embodiment 2 of the present invention.

[0088] A method for determining a grounding grid topology structure provided by the present invention is applied to a computing control component, wherein the computing control component is communicatively connected to an electromagnetic excitation component and a data acquisition component respectively, the data acquisition component is electrically connected to a plurality of detectors, and the electromagnetic excitation component includes a power amplifier circuit and an electromagnetic exciter.

[0089] See also Figure 5, the calculation control component is connected to the input end of the power amplifier circuit in communication, the output end of the power amplifier circuit is connected to the input end of the electromagnetic exciter in communication, the electromagnetic exciter and multiple detectors are placed on the same horizontal line, the distance between two adjacent detectors is Δx, the output end of the detector is electrically connected to the input end of the data acquisition component, and the output end of the data acquisition component is connected to the calculation control component in communication. The calculation control component generates a corresponding function signal based on the detection content of the trigger information, and transmits it to the power amplifier circuit for signal amplification to obtain an amplified function signal. The electromagnetic exciter is stimulated by the amplified function signal to obtain a Rayleigh wave of the corresponding frequency that propagates to the ground. The detector transmits the detected Rayleigh wave signal to the data acquisition component for signal processing, the data acquisition component performs filtering processing on the Rayleigh wave signal, and records the time difference between the Rayleigh waves detected by each adjacent detector. The calculation control component processes the data collected by the data acquisition component based on each time difference, and determines the position of the flat steel in combination with the Rayleigh wave frequency.

[0090] The present invention provides a method for determining a grounding grid topology structure, comprising the following steps:

[0091] Step 401 , responding to received trigger information, determining a detection area according to the trigger information, and moving the electromagnetic excitation assembly and a plurality of detectors to a first starting boundary corresponding to the detection area.

[0092] In the embodiment of the present invention, the detection area can be set to an area near the down conductor, and the down conductor refers to a metal conductor connecting the lightning arrester and the grounding device, so the grounding grid topology structure is usually set around the down conductor. The calculation control component uses the detection area provided by the trigger information and the setting conditions of the electromagnetic excitation component and the multiple detectors to move the electromagnetic excitation component and the multiple detectors to the first starting boundary corresponding to the detection area, and place the electromagnetic excitation component and the multiple detectors on the same horizontal line, and the adjacent detectors are set at equal intervals according to the preset spacing size.

[0093] Step 402: Use a preset function signal to excite the electromagnetic excitation component to output Rayleigh waves of corresponding frequencies.

[0094] Optionally, step 402 may include S11-S12:

[0095] S11, transmitting a preset function signal to a power amplifier circuit, and outputting an amplified function signal.

[0096] The electromagnetic excitation component includes a power amplifier circuit and an electromagnetic exciter. The power amplifier circuit refers to a circuit that amplifies a function signal. The electromagnetic exciter refers to a device that generates Rayleigh waves of corresponding frequencies after being excited by a function signal.

[0097] In the embodiment of the present invention, the computing control component provides preset function signal information according to the trigger information, outputs the corresponding function signal, and transmits it to the power amplifier circuit for signal amplification processing to obtain an amplified function signal.

[0098] S12, using the amplified function signal to excite the electromagnetic exciter from the first preset frequency point by frequency point, and output Rayleigh waves of corresponding frequencies until the excited frequency point is the second preset frequency point.

[0099] The first preset frequency point refers to the number of the Rayleigh wave frequency corresponding to the initial detection depth set by the Rayleigh wave velocity in the soil and the thickness of the flat steel. The frequency change interval obtained by combining the Rayleigh wave velocity in the soil with the thickness of the flat steel is the same between each adjacent preset frequency point. The second preset frequency point refers to the number of the Rayleigh wave frequency corresponding to the maximum detection depth within the required detection depth range.

[0100] In an embodiment of the present invention, the electromagnetic exciter and the plurality of detectors are moved to the first starting boundary corresponding to the detection area according to the information such as the detection area, the power amplifier circuit, the setting conditions of the electromagnetic exciter and the plurality of detectors provided by the trigger information. The calculation control component transmits the function signal corresponding to the first preset frequency point to the power amplifier circuit for signal amplification, and obtains the amplified function signal, and excites the electromagnetic exciter with the amplified function signal to obtain the Rayleigh wave of the frequency corresponding to the first frequency point, so that the Rayleigh wave reaches the soil depth corresponding to the first preset frequency point for detection. After obtaining the time difference value set corresponding to the first preset frequency point, the calculation control component generates the corresponding function signal according to the preset frequency point provided by the trigger information, so that the electromagnetic exciter is excited one by one, and the Rayleigh wave is used to perform frequency sweep detection from high frequency to low frequency to obtain the distribution of the underground medium corresponding to the required detection depth. When the excited frequency point is the second preset frequency point, after obtaining the corresponding time difference value set, the detection depth requirement of the position is completed.

[0101] Step 403: Calculate the time difference between the Rayleigh waves detected by every two adjacent detectors through the data acquisition component to obtain a set of time difference values ​​corresponding to the first starting boundary.

[0102] Assuming that the flat steel is buried at a depth of H, the flat steel width is d, and the soil density is fixed, the electromagnetic exciter and the No. 1, No. 2 and No. 3 detectors are placed on the same horizontal line, and the adjacent spacing between the No. 1, No. 2 and No. 3 detectors is Δx. The propagation speed of Rayleigh waves in shallow soil is a fixed value v 土壤 , the propagation speed of Rayleigh wave in the flat steel is v 扁钢 Since the density of the flat steel is greater than the density of the soil, v 扁钢 >v 土壤, assuming that there is a flat steel under the soil between detectors 1 and 2, and there is no flat steel under the soil between detectors 2 and 3. Rayleigh wave propagates from left to right, and the Rayleigh wave frequency corresponding to the detection depth H is f. When the Rayleigh wave with a frequency of f propagates to the right, the time difference between the signals measured by detectors 2 and 1 is The time difference between the signals measured by detector No. 3 and detector No. 2 is It is obvious that Δt 23 Greater than Δt 12 Therefore, the wave velocity between geophone No. 1 and geophone No. 2 is greater than the wave velocity between geophone No. 2 and geophone No. 3, indicating that there is flat steel under the soil between geophone No. 1 and geophone No. 2.

[0103] Step 404: Move the electromagnetic excitation assembly and the plurality of detectors from the first starting boundary according to a preset distance.

[0104] In an embodiment of the present invention, after the time difference set corresponding to the first starting boundary is detected, the electromagnetic excitation assembly and multiple detectors are moved at a preset distance in the detection area along a direction parallel to the first starting boundary to continue detecting the area within the detection area.

[0105] Step 405 : Jump to execute the step of exciting the electromagnetic excitation component with a preset function signal until a set of time difference values ​​corresponding to the first termination boundary of the detection area is obtained.

[0106] In an embodiment of the present invention, the electromagnetic excitation component and multiple detectors are detected starting from the first starting boundary. After each detection, the electromagnetic excitation component and multiple detectors are moved horizontally toward the first ending boundary according to a preset distance for detection to obtain a corresponding time difference set. The above-mentioned steps of detecting after moving are repeated. When the time difference set corresponding to the first ending boundary of the detection area is obtained, the detection of the electromagnetic excitation component and multiple detectors from the first starting boundary to the first ending boundary is completed.

[0107] Step 406: Move the electromagnetic excitation assembly and the plurality of detectors to a second starting boundary that is perpendicular to the first starting boundary.

[0108] The electromagnetic excitation component includes a power amplifier circuit and an electromagnetic exciter. The power amplifier circuit and the electromagnetic exciter can be arranged in an integrated manner or separately, which is not limited in the embodiment of the present invention.

[0109] If the electromagnetic exciter and the plurality of detectors are arranged at the first starting boundary position within the detection area, Figure 6 As shown, the position on the second vertical boundary perpendicular to the first starting boundary can be set as follows Figure 7The second starting boundary can be a boundary position on the left or right side of the detection area that is perpendicular to the first starting boundary. Figure 7 When the position is the first starting boundary, the second starting boundary is set to Figure 6 The boundary position shown is not limited in this embodiment of the present invention.

[0110] It is worth mentioning that when the detection area is annular, the electromagnetic exciter and multiple detectors can move clockwise or counterclockwise along the diameter at a preset distance for detection, and obtain the corresponding time difference set, thereby determining the grounding grid topology of the detection area.

[0111] In an embodiment of the present invention, after completing the detection of the first starting boundary in the horizontal direction, the electromagnetic excitation assembly and multiple detectors are moved to a second starting boundary perpendicular to the first starting boundary, so that the electromagnetic excitation assembly and multiple detectors are detected again along the direction perpendicular to the first starting boundary.

[0112] Step 407 : Jump to execute the step of exciting the electromagnetic excitation component with a preset function signal.

[0113] In an embodiment of the present invention, after the electromagnetic excitation component and multiple detectors are moved to the second starting boundary corresponding to the detection area, the computing control component again provides preset function signal information according to the trigger information, combines the power amplifier circuit and the electromagnetic exciter, outputs the Rayleigh wave of the corresponding frequency point, and detects and obtains the time difference set corresponding to the second starting boundary.

[0114] Step 408: When the time difference value set corresponding to the second starting boundary is obtained, the electromagnetic excitation assembly and the plurality of detectors are moved from the second starting boundary according to a preset distance.

[0115] In the embodiment of the present invention, after obtaining the time difference set corresponding to the second starting boundary, the electromagnetic excitation assembly and the plurality of detectors are moved starting from the second starting boundary according to the preset distance moved from the first starting boundary to the first ending boundary.

[0116] Step 409 , jump to execute the step of exciting the electromagnetic excitation component with a preset function signal until a set of time difference values ​​corresponding to the second termination boundary of the detection area is obtained.

[0117] In an embodiment of the present invention, after the electromagnetic exciter and multiple detectors are moved according to a preset distance, a corresponding function signal is generated in combination with the first preset frequency point, and the electromagnetic exciter is excited after amplification by a power amplifier circuit to generate a Rayleigh wave of the corresponding frequency, thereby obtaining a corresponding time difference value set. The calculation control component generates a corresponding function signal frequency by frequency point according to the preset frequency point provided by the trigger information, so that the electromagnetic exciter is excited frequency by frequency point, and the corresponding time difference value set is detected. When the time difference value set corresponding to the second termination boundary of the detection area is obtained, the detection of each position in the detection area is completed.

[0118] Step 410: Determine the grounding grid topology structure according to the time difference values ​​in each time difference value set and the frequency point of the corresponding Rayleigh wave.

[0119] Optionally, step 410 may include the following sub-steps S21-S24:

[0120] S21. Convert the time difference values ​​in each time difference value set into corresponding wave speeds.

[0121] In the embodiment of the present invention, after obtaining each time difference set detected from the first starting boundary to the second ending boundary in the detection area, based on the average Rayleigh wave velocity between two adjacent detectors: By combining the spacing Δx between two adjacent detectors and the corresponding Rayleigh wave frequency, the wave velocity corresponding to the time difference in each time difference set is obtained.

[0122] S22. Construct a dispersion curve using the frequency corresponding to the frequency point of the Rayleigh wave as the ordinate and the wave speed as the abscissa.

[0123] In the embodiment of the present invention, the Rayleigh wave frequency corresponding to the frequency point is set as the ordinate, the wave speed corresponding to the time difference in each time difference set is set as the abscissa, and the dispersion curve is constructed by combining the wave speed and the corresponding Rayleigh wave frequency.

[0124] S23. Convert the dispersion curve into a depth-velocity curve.

[0125] Optionally, step S23 may include the following sub-steps S231-S233:

[0126] S231. Calculate the wavelength of the corresponding Rayleigh wave based on the wave speed and the frequency of the corresponding Rayleigh wave.

[0127] In the embodiment of the present invention, based on the wave velocity v=λf of the Rayleigh wave, f is the frequency of the Rayleigh wave, λ is the wavelength of the Rayleigh wave, and the wave velocity and frequency of the Rayleigh wave corresponding to each time difference in each time difference set are combined to obtain the wavelength λ of the Rayleigh wave corresponding to each time difference.

[0128] S232. Use the wave speed as the ordinate and the wavelength of the corresponding Rayleigh wave as the abscissa to construct a wave speed-wavelength curve.

[0129] In the embodiment of the present invention, the wave speed corresponding to each time difference in each time difference set is set as the ordinate, and the Rayleigh wave wavelength corresponding to each time difference is set as the abscissa, so as to construct a wave speed-wavelength curve.

[0130] S233. According to the wave velocity-wavelength curve and the wavelength-depth conversion coefficient, a depth-wave velocity curve is constructed with depth as the ordinate and wave velocity as the abscissa.

[0131] In the embodiment of the present invention, the corresponding Rayleigh wave wavelength λ obtained by converting each time difference is converted according to the wavelength depth conversion coefficient k p =0.65 for wavelength-to-depth conversion to obtain the corresponding detection depth, and the depth-wave velocity curve is constructed by combining the wave velocities corresponding to each time difference.

[0132] If there is no flat steel underground, the wave velocity at each depth in the depth-wave velocity diagram should be the Rayleigh wave velocity in the soil. If there is flat steel at a certain depth, the wave velocity at the corresponding depth in the depth-velocity diagram will be greater than the Rayleigh wave velocity in the soil, thus confirming the existence of flat steel below the location and the corresponding depth of the flat steel.

[0133] S24. Analyze the depth-wave velocity curve and determine the grounding grid topology.

[0134] Optionally, step S24 may include the following sub-steps S241-S242:

[0135] S241. Analyze the depth-wave speed curve, obtain a wave speed different from the rated wave speed corresponding to the frequency as the target wave speed, and use the depth corresponding to the target wave speed as the flat steel depth corresponding to the flat steel.

[0136] In the embodiment of the present invention, the rated wave velocity corresponding to a frequency refers to the propagation velocity v of the Rayleigh wave corresponding to the frequency in the soil. 土壤 Since the density of the flat steel is greater than the density of the soil, v 扁钢 >v 土壤 When there is a flat steel bar in the soil, the detected wave velocity changes, and the speed of the Rayleigh wave in the flat steel v 扁钢 Set as the target wave speed and the corresponding depth as the flat steel depth corresponding to the flat steel.

[0137] S242. Determine the grounding grid topology based on the flat steel depth and the layout positions of two adjacent detectors.

[0138] Optionally, step S242 may include the following sub-steps S2421-S2422:

[0139] S2421. Use the depth of the flat steel as the vertical coordinate of the point and the layout position as the horizontal coordinate of the point to obtain the grounding grid point corresponding to the flat steel.

[0140] In the embodiment of the present invention, the middle point between adjacent detectors with flat steel is used as the grounding grid point, and the point has a corresponding flat steel depth. The flat steel depth is set as the point ordinate, and the middle point between adjacent detectors with flat steel is set as the point abscissa to construct the grounding grid point corresponding to the flat steel.

[0141] S2422. Connect each adjacent grounding grid point to obtain a grounding grid topology.

[0142] In the embodiment of the present invention, the points measured by the detector in the horizontal direction and the points of the grounding grid obtained by the longitudinal direction are plotted on the same measurement diagram, and the adjacent points of the grounding grid are connected to obtain the grounding grid topology.

[0143] When testing the topology of a multi-layer grounding grid, in order to prevent missed detection, the detection starts from the shallow layer, using high-frequency Rayleigh waves for detection. At the same time, the detector records the arrival time of the Rayleigh wave of the corresponding frequency, and the data acquisition component calculates the time difference detected between adjacent detectors. After that, the frequency is gradually reduced for detection, and the detection depth gradually becomes deeper. When the buried depth of the lower grounding grid is fully covered, after obtaining the time difference corresponding to the buried depth of the entire grounding grid, each time difference data is converted into the corresponding wave velocity, and then combined with the corresponding Rayleigh wave frequency, the dispersion curve of the corresponding measuring point between the detectors is constructed, and the dispersion curve is converted into a wave velocity-wavelength curve, and finally interpreted as a depth-wave velocity curve through inversion.

[0144] For example: when there are two layers of flat steel between detector No. 1 and detector No. 2, combined with the detection principle of Rayleigh wave on flat steel, it can be known from the depth-wave velocity curve that there will be Rayleigh wave high-speed points around the depth of the first layer of flat steel and the depth of the second layer of flat steel. The Rayleigh wave velocities at other depths are the propagation speeds of Rayleigh waves in the soil. Therefore, the burial depth of the double-layer grounding grid between detector No. 1 and detector No. 2 can be determined, and the position of the flat steel can be determined based on the position of the grounding grid.

[0145] In an embodiment of the present invention, the information provided by the trigger information is used to determine the detection area to be detected, the corresponding starting boundary, the ending boundary and the preset function signal, and the electromagnetic excitation component and the multiple detectors are moved to the first starting boundary corresponding to the detection area, and the preset function signal is used to excite the electromagnetic excitation component to output the Rayleigh wave of the corresponding frequency point. Then, the time difference between the Rayleigh waves detected by each two adjacent detectors is calculated by the data acquisition component to obtain the time difference set corresponding to the first starting boundary. The electromagnetic excitation component and the multiple detectors are moved from the first starting boundary according to the preset distance, and the corresponding time difference set is obtained according to the above steps. When the time difference set corresponding to the first termination boundary of the detection area is obtained, the electromagnetic excitation component and multiple detectors are moved to the second starting boundary corresponding to the detection area, and the above steps are repeated until the time difference set corresponding to the second termination boundary of the detection area is obtained. Combine the time difference in each time difference set and the Rayleigh wave frequency of the corresponding frequency point, convert each time difference data into the corresponding wave velocity, and then combine it with the corresponding Rayleigh wave frequency to form a dispersion curve of the corresponding detector inter-detector measurement point, and then convert the dispersion curve into a wave velocity-wavelength curve, which is interpreted as a depth-wave velocity curve through inversion. Finally, the flat steel depth is used as the point ordinate and the layout position is used as the point abscissa to obtain the grounding grid point corresponding to the flat steel, connect each adjacent grounding grid point, and obtain the grounding grid topology. The technical problem that the accuracy of the obtained grounding grid topology structure is low due to electromagnetic interference in the process of obtaining the grounding grid topology structure by the existing electromagnetic method is solved. It can output the Rayleigh wave of the corresponding frequency point required for detection, and detect it after moving in the detection area in combination with the preset distance, so as to obtain a grounding grid topology structure with high accuracy.

[0146] See also Figure 8 , Figure 8 A structural block diagram of a grounding grid topology determination system provided in Embodiment 3 of the present invention.

[0147] The embodiment of the present invention provides a grounding grid topology determination system, which is applied to a computing control component, wherein the computing control component is respectively connected to an electromagnetic excitation component and a data acquisition component for communication, and the data acquisition component is electrically connected to a plurality of detectors, and the system includes:

[0148] The information response and movement module 801 is used to respond to the received trigger information, determine the detection area according to the trigger information, and move the electromagnetic excitation component and multiple detectors to the first starting boundary corresponding to the detection area.

[0149] The Rayleigh wave output module 802 is used to excite the electromagnetic excitation component using a preset function signal to output a Rayleigh wave of a corresponding frequency point.

[0150] The time difference calculation module 803 is used to calculate the time difference between the Rayleigh waves detected by every two adjacent detectors through the data acquisition component to obtain a time difference set corresponding to the first starting boundary.

[0151] The first moving module 804 is used to move the electromagnetic excitation assembly and the plurality of detectors from the first starting boundary according to a preset distance.

[0152] The first jump execution module 805 is used to jump to the step of exciting the electromagnetic excitation component with a preset function signal until a set of time difference values ​​corresponding to the first termination boundary of the detection area is obtained.

[0153] The topology determination module 806 is used to determine the grounding grid topology according to the time difference values ​​in each time difference value set and the frequency point of the corresponding Rayleigh wave.

[0154] Optionally, the system further includes:

[0155] The second moving module is used to move the electromagnetic excitation assembly and the plurality of detectors to a second starting boundary that is perpendicular to the first starting boundary.

[0156] The second jump module is used to jump to execute the step of exciting the electromagnetic excitation component with a preset function signal.

[0157] The third moving module is used to move the electromagnetic excitation component and the plurality of detectors according to a preset distance from the second starting boundary when a time difference value set corresponding to the second starting boundary is obtained.

[0158] The third jump module is used to jump to the step of exciting the electromagnetic excitation component with a preset function signal until a set of time difference values ​​corresponding to a second termination boundary of the detection area is obtained.

[0159] Optionally, the Rayleigh wave output module 802 includes:

[0160] The function signal output module is used to transmit the preset function signal to the power amplifier circuit and output the amplified function signal.

[0161] The Rayleigh wave output submodule is used to excite the electromagnetic exciter from the first preset frequency point by frequency point using the amplified function signal, and output the Rayleigh wave of the corresponding frequency point until the excited frequency point is the second preset frequency point.

[0162] Optionally, the topology determination module 806 includes:

[0163] The wave speed acquisition module is used to convert the time difference values ​​in each time difference value set into the corresponding wave speed.

[0164] The dispersion curve construction module is used to construct a dispersion curve using the frequency corresponding to the frequency point of the Rayleigh wave as the ordinate and the wave speed as the abscissa.

[0165] The depth-velocity curve building module is used to convert the dispersion curve into a depth-velocity curve.

[0166] The topology determination submodule is used to analyze the depth-wave velocity curve and determine the grounding grid topology.

[0167] Optionally, the depth-wave velocity curve building module includes:

[0168] The wavelength determination module is used to calculate the wavelength of the corresponding Rayleigh wave according to the wave speed and the frequency of the corresponding Rayleigh wave.

[0169] The wave speed-wavelength curve construction module is used to construct a wave speed-wavelength curve using the wave speed as the vertical coordinate and the wavelength of the corresponding Rayleigh wave as the horizontal coordinate.

[0170] The depth-wave velocity curve construction submodule is used to construct a depth-wave velocity curve with depth as the ordinate and wave velocity as the abscissa according to the wave velocity-wavelength curve and the wavelength-depth conversion coefficient.

[0171] Optionally, the topology determination submodule includes:

[0172] The flat steel depth determination module is used to analyze the depth-wave speed curve, obtain the wave speed different from the rated wave speed corresponding to the frequency as the target wave speed, and use the depth corresponding to the target wave speed as the flat steel depth corresponding to the flat steel.

[0173] The layout position determines the topology structure module, which is used to determine the grounding grid topology structure according to the flat steel depth and the layout positions of two adjacent detectors.

[0174] Optionally, the deployment location determination topology structure module includes:

[0175] The grounding grid point obtaining module is used to obtain the grounding grid point corresponding to the flat steel using the flat steel depth as the point ordinate and the layout position as the point abscissa.

[0176] The grounding grid point determination topology structure module is used to connect each adjacent grounding grid point to obtain the grounding grid topology structure.

[0177] In an embodiment of the present invention, by responding to the received trigger information, the detection area is determined according to the trigger information. The electromagnetic excitation component and multiple detectors are moved to the first starting boundary corresponding to the detection area, and a preset function signal is used to excite the electromagnetic excitation component after amplification by the power amplifier circuit, and the Rayleigh wave of the corresponding frequency point is output. Then, the time difference between the Rayleigh waves detected by each two adjacent detectors is calculated by the data acquisition component to obtain the time difference set corresponding to the first starting boundary. The electromagnetic exciter and multiple detectors are moved according to the preset distance from the first starting boundary, and the corresponding time difference set is obtained according to the above steps. When the time difference set corresponding to the first termination boundary of the detection area is obtained, the grounding grid topology structure is determined according to the time difference in each time difference set and the frequency point of the corresponding Rayleigh wave. Thereby solving the technical problem that the accuracy of the obtained grounding grid topology structure is low due to electromagnetic interference in the process of obtaining the grounding grid topology structure by the existing electromagnetic method. The present invention outputs a preset function signal to excite the electromagnetic excitation component through the calculation control component, so that the Rayleigh wave of the corresponding frequency point can be output according to the detection needs. By moving the electromagnetic excitation component and a plurality of detectors in a detection area and then performing detection, a grounding grid topology structure with high accuracy can be obtained.

[0178] See also Fig. 9 , Fig. 9 A structural block diagram of an electronic device according to an embodiment of the present invention is shown.

[0179] An electronic device according to an embodiment of the present invention includes: a memory 902 and a processor 901, wherein the memory 902 stores a computer program; when the computer program is executed by the processor 901, the processor 901 executes a method for determining a grounding grid topology structure as described in any of the above embodiments.

[0180] The memory 902 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk or a ROM. The memory 902 includes a storage space 903 having a program code 913 for executing any method step in the above method. For example, the storage space 903 for program code may include individual program codes 913 for implementing the various steps in the above method, respectively. These program codes may be read from or written to one or more computer program products. These computer program products include program code carriers such as a hard disk, a compact disk (CD), a memory card or a floppy disk. The program code may be compressed, for example, in an appropriate form. When these codes are run by a computing and processing device, the computing and processing device is caused to execute the various steps in the grounding grid topology determination method described above.

[0181] An embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for determining a grounding grid topology structure as described in any of the above embodiments is implemented.

[0182] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the methods, systems, devices and media described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0183] In the several embodiments provided in the present application, it should be understood that the disclosed methods, systems, devices and media can be implemented in other ways. For example, the system embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0184] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0185] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0186] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0187] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining a grounding grid topology structure, characterized in that: Applied to a computing control component, the computing control component is respectively connected to an electromagnetic excitation component and a data acquisition component for communication, the data acquisition component is electrically connected to a plurality of detectors, and the method comprises: In response to the received trigger information, determining a detection area according to the trigger information, and moving the electromagnetic excitation assembly and the plurality of detectors to a first starting boundary corresponding to the detection area; Using a preset function signal to excite the electromagnetic excitation component to output Rayleigh waves of corresponding frequencies; By means of the data acquisition component, the time difference between each two adjacent detectors detecting the Rayleigh waves is calculated to obtain a set of time difference values ​​corresponding to the first starting boundary; Moving the electromagnetic excitation assembly and the plurality of detectors at a preset distance from the first starting boundary; Jump to execute the step of exciting the electromagnetic excitation component by using a preset function signal until a set of time difference values ​​corresponding to a first termination boundary of the detection area is obtained; Determining a grounding grid topology structure according to the time difference values ​​in each of the time difference value sets and the frequency points of the corresponding Rayleigh waves; The step of determining the topology of the grounding grid according to the time difference values ​​in each of the time difference value sets and the frequency points of the corresponding Rayleigh waves comprises: Converting the time difference values ​​in each of the time difference value sets into corresponding wave speeds; A dispersion curve is constructed by taking the frequency corresponding to the frequency point of the Rayleigh wave as the ordinate and the wave velocity as the abscissa; converting the dispersion curve into a depth-velocity curve; Analyzing the depth-wave velocity curve to determine the grounding grid topology; The step of analyzing the depth-wave velocity curve to determine the grounding grid topology structure includes: Analyze the depth-wave speed curve, obtain a wave speed different from the rated wave speed corresponding to the frequency as a target wave speed, and use the depth corresponding to the target wave speed as the flat steel depth corresponding to the flat steel; The grounding grid topology is determined according to the flat steel depth and the layout positions of two adjacent detectors.

2. The method for determining the grounding grid topology structure according to claim 1, characterized in that: Before the step of determining the grounding grid topology structure according to the time difference values ​​in each of the time difference value sets and the frequency points corresponding to the Rayleigh waves, the method further includes: Moving the electromagnetic excitation assembly and the plurality of detectors to a second starting boundary perpendicular to the first starting boundary; Jump to execute the step of exciting the electromagnetic excitation component by using a preset function signal; When the time difference set corresponding to the second starting boundary is obtained, moving the electromagnetic excitation component and the plurality of detectors from the second starting boundary according to the preset distance; Jump to execute the step of exciting the electromagnetic excitation component with a preset function signal until a set of time difference values ​​corresponding to the second termination boundary of the detection area is obtained.

3. The method for determining the grounding grid topology structure according to claim 1, characterized in that: The electromagnetic excitation component includes a power amplifier circuit and an electromagnetic exciter; the step of using a preset function signal to excite the electromagnetic excitation component and outputting Rayleigh waves of corresponding frequencies includes: Transmitting a preset function signal to the power amplifier circuit to output an amplified function signal; The electromagnetic exciter is excited from the first preset frequency point by frequency point using the amplified function signal to output Rayleigh waves of corresponding frequencies until the excited frequency point is the second preset frequency point.

4. The method for determining the grounding grid topology structure according to claim 1, characterized in that: The step of converting the dispersion curve into a depth-velocity curve comprises: Calculating the wavelength of the Rayleigh wave according to the wave speed and the frequency of the Rayleigh wave; Using the wave speed as the ordinate and the wavelength corresponding to the Rayleigh wave as the abscissa, a wave speed-wavelength curve is constructed; According to the wave velocity-wavelength curve and the wavelength-depth conversion coefficient, a depth-wave velocity curve is constructed with depth as the ordinate and the wave velocity as the abscissa.

5. The method for determining the grounding grid topology structure according to claim 1, characterized in that: The step of determining the grounding grid topology structure according to the flat steel depth and the layout positions of two adjacent detectors includes: Taking the flat steel depth as the point ordinate and the layout position as the point abscissa, the grounding grid point corresponding to the flat steel is obtained; The adjacent grounding grid points are connected to obtain a grounding grid topology structure.

6. A grounding grid topology determination system, characterized in that: Applied to a computing control component, the computing control component is respectively connected to an electromagnetic excitation component and a data acquisition component for communication, the data acquisition component is electrically connected to a plurality of detectors, and the system comprises: An information response and movement module, used to respond to the received trigger information, determine the detection area according to the trigger information, and move the electromagnetic excitation component and the plurality of detectors to a first starting boundary corresponding to the detection area; A Rayleigh wave output module, used to excite the electromagnetic excitation component with a preset function signal and output a Rayleigh wave of a corresponding frequency point; A time difference calculation module, used to calculate the time difference between each two adjacent detectors detecting the Rayleigh waves through the data acquisition component, and obtain a time difference set corresponding to the first starting boundary; A first moving module, used for moving the electromagnetic excitation assembly and the plurality of detectors according to a preset distance from the first starting boundary; A first jump execution module, used for jumping to execute the step of exciting the electromagnetic excitation component by using a preset function signal until a set of time difference values ​​corresponding to a first termination boundary of the detection area is obtained; A topology determination module, used to determine the topology of the grounding grid according to the time difference values ​​in each of the time difference value sets and the frequency points corresponding to the Rayleigh waves; The topology structure determination module includes: A wave speed acquisition module, used for converting the time difference values ​​in each of the time difference value sets into corresponding wave speeds; A dispersion curve construction module, used to construct a dispersion curve using the frequency corresponding to the frequency point of the Rayleigh wave as the ordinate and the wave speed as the abscissa; A depth-velocity curve building module for converting the dispersion curve into a depth-velocity curve A topology determination submodule, used to analyze the depth-wave velocity curve and determine the grounding grid topology; The topology structure determination submodule includes: A flat steel depth determination module is used to analyze the depth-wave speed curve, obtain a wave speed different from the rated wave speed corresponding to the frequency as a target wave speed, and use the depth corresponding to the target wave speed as the flat steel depth corresponding to the flat steel; The layout position determination topology structure module is used to determine the grounding grid topology structure according to the flat steel depth and the layout positions of two adjacent detectors.

7. An electronic device, characterized in that: It comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the method for determining the grounding grid topology structure according to any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed, the method for determining the grounding grid topology structure according to any one of claims 1 to 5 is implemented.

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