Offshore photovoltaic pile foundation safety assessment method and device, medium and electronic equipment

Abstract

The invention provides an offshore photovoltaic pile foundation safety assessment method and device, a medium and electronic equipment, and relates to the field of offshore photovoltaic technologies. The safety assessment method for the offshore photovoltaic pile foundation comprises the steps that original water depth data, sound velocity profile data and tide level data collected by a multi-beam sounding system are obtained for an offshore photovoltaic offshore area; correcting the original water depth data according to the sound velocity profile data to obtain first corrected water depth data; comparing the tide level data with the tide level reference data to obtain a difference value between the tide level reference height in the tide level reference data and the current tide level height in the tide level data, and adding the first corrected water depth data and the difference value to obtain second corrected water depth data; and constructing a first three-dimensional submarine topographic map based on the second corrected water depth data, and performing safety assessment on the photovoltaic pile foundation in the offshore area based on the first three-dimensional submarine topographic map. According to the method, the safety of the offshore photovoltaic pile foundation can be accurately and efficiently evaluated.

Description

Technical Field

[0001] This disclosure relates to the field of offshore photovoltaic technology, and more specifically, to a method, apparatus, medium, and electronic equipment for assessing the safety of offshore photovoltaic pile foundations. Background Technology

[0002] Safety assessment of offshore photovoltaic (PV) pile foundations is crucial to ensuring the safety of offshore PV power plants. With the rapid development of offshore PV technology, pile foundations, as core components of the support system, are subjected to long-term erosion and corrosion from waves and currents. To protect the equipment from further damage, it is necessary to assess the safety of offshore PV pile foundations for maintenance and repair.

[0003] However, currently, safety assessment data is mainly obtained through artificial diving or shipborne single-beam measurement devices. It is evident that the current process of obtaining safety assessment data is characterized by low data accuracy and low efficiency.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this disclosure is to provide a method, device, medium, and electronic equipment for safety assessment of offshore photovoltaic pile foundations, thereby overcoming, to at least some extent, the problems of low data accuracy and low efficiency in the process of acquiring safety assessment data.

[0006] According to a first aspect of this disclosure, a method for safety assessment of offshore photovoltaic (PV) pile foundations is provided, comprising: acquiring location data of the offshore PV pile foundations; determining an initial detection route based on the location data; determining the actual coverage area of ​​a multibeam echo sounder system, wherein the multibeam echo sounder system is installed on a sounding vessel and includes an attitude sensor and a multibeam transducer; adjusting the initial detection route according to the actual coverage area to obtain a target detection route; acquiring raw water depth data, sound velocity profile data, and tide level data collected by the multibeam echo sounder system based on the target detection route, wherein the sound velocity profile data includes sound velocity values ​​of multiple water layers; and calculating the sound waves emitted by the multibeam echo sounder system based on the sound velocity values ​​of the multiple water layers. The propagation path of the sound wave is used to correct the propagation time and seabed reflection point position of the sound wave emitted by the multibeam echo sounder to obtain the first corrected water depth data. The tidal data is compared with the tidal reference data to obtain the difference between the tidal reference height in the tidal reference data and the current tidal height in the tidal data. The first corrected water depth data and the difference are added together to obtain the second corrected water depth data. A first three-dimensional seabed topographic map is constructed based on the second corrected water depth data. The difference between the seabed depth in the second corrected water depth data and the water depth around the offshore photovoltaic pile foundation is calculated based on the first three-dimensional seabed topographic map to serve as the first scour value. The safety assessment result is output based on the first scour value.

[0007] Optionally, a multibeam echo sounder is installed on a sounding vessel. The multibeam echo sounder includes an attitude sensor and a multibeam transducer. The multibeam transducer is used to transmit and receive sound waves so that the multibeam echo sounder can acquire raw water depth data. The direction in which the multibeam transducer transmits sound waves is the beam direction. Before acquiring the raw water depth data, sound velocity profile data, and tide level data acquired by the multibeam echo sounder, the safety assessment method for offshore photovoltaic pile foundations also includes: monitoring the hull attitude data of the sounding vessel through the attitude sensor; and adjusting the beam direction according to the hull attitude data to correct the deviation in beam direction caused by the rolling of the sounding vessel.

[0008] Optionally, a safety assessment result is output based on the first scour value, including: if the first scour value is greater than a first scour threshold, then a first safety assessment result is output; if the first scour value is less than or equal to the first scour threshold, then a second scour value is determined, the second scour value being the scour value corresponding to a second three-dimensional seabed topographic map, the second three-dimensional seabed topographic map being a topographic map obtained after being updated from the first three-dimensional seabed topographic map after a preset time; if the second scour value minus the first scour value is greater than or equal to the second scour threshold, then a second safety assessment result is output; if the second scour value minus the first scour value is less than or equal to the second scour threshold, then a third safety assessment result is output.

[0009] Optionally, determining the actual coverage of the multibeam echo sounder includes: acquiring the performance parameters of the multibeam echo sounder, including beam angle, operating frequency, and maximum detection depth; calculating the theoretical coverage of a single echo sounding trip by the echo sounder based on the performance parameters; and adjusting the theoretical coverage by combining the echo sounder's speed with the data acquisition frequency of the multibeam echo sounder to determine the actual coverage of the multibeam echo sounder.

[0010] Optionally, the tide level data is compared with the tide level reference data to obtain the difference between the reference tide level height in the reference data and the current tide level height in the tide level data. This includes: obtaining time series data of real-time tide levels, where the time series data contains the correspondence between timestamps and tide level heights; obtaining the reference tide level height that matches the timestamp from the tide level reference database, where the reference tide level height is determined based on long-term statistical data; and calculating the difference between the reference tide level height in the tide level reference data and the current tide level height in the tide level data at the same timestamp.

[0011] Optionally, before constructing the first three-dimensional seabed topographic map based on the second corrected water depth data, outlier processing is performed on the second corrected water depth data, including: if the second corrected water depth data is determined to be an outlier, a replacement value is determined and the outlier is replaced.

[0012] Optionally, determining alternative values ​​to replace outliers includes: determining multiple normal values ​​near the outlier based on the K-nearest neighbor algorithm, calculating the average or weighted average of the normal values ​​as alternative values, and replacing the outlier with the alternative values.

[0013] According to a second aspect of this disclosure, a safety assessment device for offshore photovoltaic (PV) pile foundations is provided, comprising: a data acquisition module for acquiring location data of the offshore PV pile foundation, determining an initial detection route based on the location data, determining the actual coverage area of ​​a multibeam echo sounder, wherein the multibeam echo sounder is installed on a sounding vessel and includes an attitude sensor and a multibeam transducer, adjusting the initial detection route according to the actual coverage area to obtain a target detection route, and acquiring raw water depth data, sound velocity profile data, and tide level data collected by the multibeam echo sounder based on the target detection route, wherein the sound velocity profile data includes sound velocity values ​​of multiple water layers; and a first correction module for calculating the sound wave emitted by the multibeam echo sounder based on the sound velocity values ​​of the multiple water layers. The system employs a propagation path correction module to adjust the propagation time and seabed reflection point location of the sound waves emitted by the multibeam echo sounder, thereby obtaining first corrected water depth data. A second correction module compares the tide level data with the tide level reference data, obtaining the difference between the reference tide height in the reference data and the current tide height in the tide level data. The first corrected water depth data and the difference are then added together to obtain the second corrected water depth data. A safety assessment module constructs a first three-dimensional seabed topographic map based on the second corrected water depth data. Based on the first three-dimensional seabed topographic map, it calculates the difference between the seabed depth in the second corrected water depth data and the water depth around the offshore photovoltaic pile foundation, using this as the first scour value. The module then outputs the safety assessment result based on the first scour value.

[0014] Optionally, before the data acquisition module acquires the raw water depth data, sound velocity profile data, and tide level data collected by the multibeam echo sounder, the process of assessing the safety of the offshore photovoltaic pile foundation also includes: monitoring the hull attitude data of the echo sounder through an attitude sensor; and adjusting the beam direction based on the hull attitude data to correct the deviation in beam direction caused by the swaying of the echo sounder.

[0015] Optionally, the process by which the safety assessment module outputs a safety assessment result based on the first scour value includes: if the first scour value is greater than a first scour threshold, then outputting a first safety assessment result; if the first scour value is less than or equal to the first scour threshold, then determining a second scour value, the second scour value being the scour value corresponding to a second three-dimensional seabed topographic map, the second three-dimensional seabed topographic map being a topographic map obtained after being updated from the first three-dimensional seabed topographic map after a preset time; if the second scour value minus the first scour value is greater than or equal to the second scour threshold, then outputting a second safety assessment result; if the second scour value minus the first scour value is less than or equal to the second scour threshold, then outputting a third safety assessment result.

[0016] Optionally, the process by which the data acquisition module determines the actual coverage of the multibeam echo sounder includes: acquiring the performance parameters of the multibeam echo sounder, including beam angle, operating frequency, and maximum detection depth; calculating the theoretical coverage of the echo sounder's single-voyage echo sounding based on the performance parameters; and adjusting the theoretical coverage based on the echo sounder's speed and the data acquisition frequency of the multibeam echo sounder to determine the actual coverage of the multibeam echo sounder.

[0017] Optionally, the process by which the first correction module compares the tide level data with the tide level reference data and obtains the difference between the reference tide level height in the reference data and the current tide level height in the tide level data includes: acquiring real-time tide level time series data, which contains the correspondence between timestamps and tide level heights; acquiring the reference tide level height that matches the timestamp from the tide level reference database, which is determined based on long-term statistical data; and calculating the difference between the reference tide level height in the reference data and the current tide level height in the tide level data at the same timestamp.

[0018] Optionally, before constructing the first three-dimensional seabed topographic map based on the second corrected water depth data, the process of the second correction module performing outlier processing on the second corrected water depth data further includes: if the second corrected water depth data is determined to be an outlier, determining a replacement value and replacing the outlier.

[0019] Optionally, the second correction module determines a replacement value, and the process of replacing the outlier includes: determining multiple normal values ​​near the outlier based on the K-nearest neighbor algorithm, calculating the average or weighted average of each normal value as a replacement value, and replacing the outlier with the replacement value.

[0020] According to a third aspect of this disclosure, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements any of the above-described methods for assessing the safety of offshore photovoltaic pile foundations.

[0021] According to a fourth aspect of this disclosure, an electronic device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; the processor is configured to implement any of the above-described methods for assessing the safety of offshore photovoltaic pile foundations by executing the executable instructions.

[0022] In some embodiments of this disclosure, the technical solutions involve using a multibeam echo sounder to collect raw water depth data, which is then corrected by combining it with sound velocity profile data. Subsequently, the water depth data is further corrected by calculating the tidal height difference between tidal data and benchmark data. Finally, a three-dimensional seabed topographic map is constructed based on the corrected data, thereby assessing the safety of offshore photovoltaic pile foundations. On one hand, this disclosure uses a multibeam echo sounder to acquire data, avoiding the safety hazards associated with manual diving. On the other hand, using a multibeam echo sounder improves the efficiency of data acquisition. Furthermore, this disclosure adjusts the beam angle of the multibeam transducer in real time during the data acquisition stage and performs two corrections on the data acquired by the multibeam echo sounder during the data processing stage, resulting in highly accurate safety assessment data.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] Figure 1 A flowchart illustrating a method for assessing the safety of offshore photovoltaic pile foundations according to an exemplary embodiment of the present disclosure is shown.

[0026] Figure 2 A schematic diagram of a depth sounding vessel equipped with a multibeam echo sounder is shown.

[0027] Figure 3 This diagram illustrates the real-time adjustment of the beam angle of the beam transducer in a multibeam sounding system.

[0028] Figure 4 A schematic diagram of water depth correction based on sound velocity profile data is shown.

[0029] Figure 5 A schematic diagram is shown showing the correction of water depth based on tidal level change data.

[0030] Figure 6 A schematic diagram of a three-dimensional seabed topography is shown.

[0031] Figure 7 A cross-sectional view of the first three-dimensional seabed topography map is shown.

[0032] Figure 8A cross-sectional view of the first three-dimensional seabed topographic map and a comparison view of the second three-dimensional seabed topographic map are shown.

[0033] Figure 9 A block diagram of a safety assessment apparatus for offshore photovoltaic pile foundations according to an exemplary embodiment of the present disclosure is shown schematically.

[0034] Figure 10 A schematic diagram of the structure of an electronic device suitable for implementing embodiments of the present disclosure is shown. Detailed Implementation

[0035] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more specific details omitted, or other methods, components, apparatus, steps, etc., can be employed. In other instances, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0036] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0037] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all steps. For example, some steps may be broken down, while others may be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances. Furthermore, all terms such as "first," "second," and "third" used below are for distinction purposes only and should not be construed as limiting the scope of this disclosure.

[0038] The various steps in the following method for assessing the safety of offshore photovoltaic pile foundations are performed by electronic devices. This disclosure does not limit the type of electronic device, such as a server, personal computer, or mobile device.

[0039] Figure 1A flowchart illustrating an exemplary embodiment of a method for assessing the safety of offshore photovoltaic pile foundations according to this disclosure is shown schematically. Reference Figure 1 The safety assessment method for offshore photovoltaic pile foundations may include the following steps:

[0040] S10. For offshore photovoltaic areas, acquire raw water depth data, sound velocity profile data, and tide level data collected by a multibeam echo sounder.

[0041] In exemplary embodiments of this disclosure, a multibeam echo sounder system may include a multibeam transducer, an attitude sensor, a tide gauge, and a sound velocity profiler. Specifically, the multibeam transducer can be used to emit and receive sound waves. The attitude sensor can be used to acquire attitude data of the echo sounder. The tide gauge can be used to acquire tide level data. The sound velocity profiler can be used to acquire sound velocity profile data.

[0042] It should be noted that, in order to illustrate the measurement and calculation process of the scour pit of the offshore photovoltaic pile foundation more intuitively and clearly, the pile body of the offshore photovoltaic pile foundation is omitted in all the schematic diagrams in this disclosure. In the actual implementation process, this part also needs to be considered.

[0043] refer to Figure 2 The multibeam echo sounder 23 can be installed on the sounding vessel 21. When acquiring raw water depth data, sound velocity profile data, and tide level data, the multibeam transducer in the multibeam echo sounder 23 first emits and receives sound waves. Based on the recorded time intervals, the raw water depth data can be calculated. The sound velocity profile data is acquired by a sound velocity profiler, and the tide level data is acquired by a tide level meter. Optionally, an attitude sensor can be integrated into the multibeam echo sounder 23, and the attitude sensor can correct the multibeam transducer in real time, thereby eliminating errors caused by the roll and pitch of the sounding vessel 21.

[0044] According to some embodiments of this disclosure, before acquiring raw water depth data, sound velocity profile data, and tidal level data, the route for the depth sounder 21 to acquire data can be planned in advance based on the distribution of the pile foundations. For example... Figure 2 As shown, the depth sounding range of a multibeam echo sounder is conical, so the range will decrease when the water is too shallow. When planning the route, the water depth of different parts of the sea area can be obtained in advance. During the depth sounding process, if the scour pit 25 is not covered by the depth sounding range, the vessel can return to conduct supplementary measurements.

[0045] According to some embodiments of this disclosure, the hull attitude data of the depth sounder 21 can be monitored by an attitude sensor. The detected hull attitude data may include the pitch and roll amplitudes of the depth sounder 21. In order to maintain the direction of the sound waves emitted by the multibeam transducer in the multibeam echo sounder during pitching and rolling, the probe direction of the multibeam transducer can be compensated based on the hull attitude data detected by the attitude sensor, so as to maintain the validity of the measured data.

[0046] by Figure 3 For example, to ensure the validity of the data measured by the sounding vessel 21, the direction of the sound waves emitted by the multibeam transducer in the multibeam sounding system 23 during pitching must be consistent with that when the sounding vessel 21 is not swaying. The multibeam sounding system 23 is installed in the forward section of the sounding vessel 21. Therefore, when the sounding vessel 21 tilts backward, the forward section of the sounding vessel 21 floats, resulting in a shallower wading depth for the multibeam sounding system 23, and consequently, a change in the actual depth measurement range of the seabed. If the scour pit 25 is not covered by the depth measurement range, the vessel can return to conduct supplementary measurements.

[0047] S12. Correct the original water depth data based on the sound velocity profile data to obtain the first corrected water depth data.

[0048] Sound velocity profile data refers to the vertical distribution curve of sound velocity with depth in a body of water, which can be obtained by a sound velocity profiler. The propagation speed of sound waves in water is affected by temperature, salinity, and water pressure at different depths; therefore, sound velocity profile data is directly related to the measurement accuracy of acoustic equipment.

[0049] According to some embodiments of this disclosure, firstly, sound velocity profile data is analyzed to obtain the sound velocity distribution of multiple water layers, and then, based on the sound velocity profile data, the water body is divided into several layers.

[0050] The following reference Figure 4 This describes the process of calculating the actual propagation path based on sound velocity profiles. For example, the water body is divided into shallow, intermediate, and deep water layers, with a corresponding sound velocity value for each layer. Then, the refraction path of the sound wave in the layered medium is calculated for each beam according to Snell's law, as shown in the figure. The actual propagation path of the sound wave can be a broken line propagation path. Finally, the actual propagation distance of the sound wave is obtained by combining the sound velocity values ​​of the shallow, intermediate, and deep water layers with the time interval between the transmission and reception of the sound waves by the multi-beam transducer, so as to obtain the corrected seabed depth data.

[0051] It should be noted that, for ease of explanation, Figure 4 The water body was divided into three layers. However, in actual calculations, if the water body is deep, the number of layers can be greater than three for the sake of data accuracy.

[0052] S14. Compare the tide level data with the tide level reference data, obtain the difference between the tide level reference height in the tide level reference data and the current tide level height in the tide level data, and add the first corrected water depth data and the difference to obtain the second corrected water depth data.

[0053] Tide level data is the actual sea surface height at a specific time and location, measured in real time by a tide gauge. Tide level data is affected by factors such as tides and weather, and may change every minute. Tide reference data is a reference plane obtained from long-term tide level statistics; it is a static reference surface.

[0054] According to some embodiments of this disclosure, such as Figure 5 As shown, the current tide level can be obtained first by using a tide gauge integrated into a multibeam echo sounder system, then the reference tide level can be obtained, and finally the difference Δh between the reference tide level and the current tide level can be calculated.

[0055] The following reference Figure 5 The description describes the correction of water depth based on tidal level change data. Since the current tidal level is higher than the tidal reference height, the first corrected water depth data obtained at this time is also too high. Therefore, the difference Δh between the current tidal reference height and the current tidal level is negative. Adding Δh to the first corrected water depth data yields the second corrected water depth data.

[0056] It should be noted that abnormal weather, including storm surges, are special cases, and the data obtained need to be further corrected based on the impact of these abnormal weather events.

[0057] S16. Construct a first three-dimensional seabed topographic map based on the second corrected water depth data, and conduct a safety assessment of the photovoltaic pile foundation in the marine area based on the first three-dimensional seabed topographic map.

[0058] The first three-dimensional seabed topographic map, constructed using 3D modeling software, includes multiple offshore photovoltaic (PV) pile foundations and was generated by post-processing software based on data after secondary correction. Safety assessment of the PV pile foundations within the offshore area is performed using data analysis software to output the safety of one or more pile foundations. The output results can be categorized as high safety, medium safety, or low safety.

[0059] According to some embodiments of this disclosure, the second corrected water depth data can be obtained by adding the difference Δh between the tidal reference height and the current tidal height to the first corrected water depth data. The constructed first three-dimensional seabed topographic map is as follows: Figure 6 As shown, for reference Figure 6 It can be seen that the soil around the pile foundation is concave compared to the seabed surface, so it can be concluded that there is scouring around the pile foundation in the figure.

[0060] However, the degree of erosion around offshore photovoltaic (PV) foundations can be quantified. The degree of erosion can be classified based on the quantified results, or the quantified results can be used to obtain a numerical value by referring to a time scale. Both methods, or a combination of both, can be used to assess the safety of the foundations.

[0061] It is important to note that after obtaining multiple second-correction water depth data, if there is abnormal data, the data point can be deleted, and the K nearest normal values ​​around the abnormal value can be found according to the K nearest neighbor algorithm. The average or weighted average of these values ​​is calculated and used to replace the abnormal water depth data. Taking actual numbers as an example, the K value can be 5, and the closer the distance, the higher the weight can be.

[0062] Based on some embodiments of this disclosure, the following references are made. Figure 7 Using a cross-sectional view of the first three-dimensional seabed topography map to illustrate the changes in the soil around a certain pile foundation, the first scour value d1-d2 can be obtained by subtracting the water depth d1 around the pile foundation from the water depth d2 at the seabed surface. The first scour value can be understood as the depth of the scour pit.

[0063] for Figure 7 The system can directly output results based on the obtained static 3D topographic map. For example, if the first scour value d1-d2 is greater than the first scour threshold, the first safety assessment result can be directly output. For instance, when the first scour value d1-d2 is greater than 2m, the result can be "low safety"; when the first scour value d1-d2 is less than or equal to 0.3m, the result can be "high safety"; and when the first scour value d1-d2 is greater than 0.3m and less than 2m, the result can be "medium safety".

[0064] According to some embodiments of this disclosure, in understanding Figure 7 Based on this, safety assessment standards can be refined. Figure 8 A cross-sectional view of the first three-dimensional seabed topographic map and a comparison view of the second three-dimensional seabed topographic map are shown.

[0065] like Figure 8As shown, after a preset time, a second three-dimensional seabed topographic map is obtained in the same way. If the first scour value d1-d2 is greater than the first scour threshold, a low safety level can be output. If the first scour value d1-d2 is less than or equal to the first scour threshold, the scour value at the same location after a preset time is calculated. Subtracting the water depth d3 around the pile foundation from the water depth d4 at the seabed surface yields the second scour value d3-d4. Subtracting the first scour value d1-d2 from the second scour value d3-d4 gives the change in scour pit depth Δd within the preset time. Comparing Δd with the second scour threshold, if Δd is greater than or equal to the second scour threshold, a medium safety level can be output; if Δd is less than the second scour threshold, a high safety level can be output.

[0066] Taking actual figures as an example, if the first scour value d1-d2 is greater than 2m, the safety level can be output as low. If the first scour value d1-d2 is less than or equal to 2m, the scour value at the same location after a preset time is calculated. Subtracting the water depth d3 around the pile foundation from the water depth d4 at the seabed surface yields the second scour value d3-d4. Subtracting the first scour value d1-d2 from the second scour value d3-d4 gives the change in scour pit depth Δd over the preset time. If Δd is greater than or equal to 0.1m, the safety level can be output as medium; if Δd is less than 0.1m, the safety level can be output as high.

[0067] It is important to note that Figure 7 and Figure 8 China did not perform Figure 2 The depth at which the multibeam echo sounder 23 is located. However, this depth needs to be calculated in actual calculations, and the water depth is approximately equal to the length of the multibeam transducer in the multibeam echo sounder 23 plus the draft of the echo sounder vessel.

[0068] It should be noted that although the steps of the method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or a step may be broken down into multiple steps.

[0069] Furthermore, this example embodiment also provides a safety assessment device for offshore photovoltaic pile foundations.

[0070] Figure 9 A block diagram illustrating a subject-related information acquisition apparatus according to an exemplary embodiment of this disclosure is shown schematically. References Figure 9The subject-related information acquisition device 9 according to an exemplary embodiment of the present disclosure may include a data acquisition module 91, a first correction module 93, a second correction module 95, and a security assessment module 97.

[0071] Specifically, the data acquisition module 91 can be used to acquire the location data of the offshore photovoltaic pile foundation, determine the original detection route based on the location data, and determine the actual coverage area of ​​the multibeam echo sounder. The multibeam echo sounder is installed on the echo sounder vessel and includes an attitude sensor and a multibeam transducer. The original detection route is adjusted according to the actual coverage area to obtain the target detection route. Based on the target detection route, the original water depth data, sound velocity profile data, and tide level data collected by the multibeam echo sounder are acquired. The sound velocity profile data includes the sound velocity values ​​of multiple water layers. The first correction module 93 can be used to calculate the propagation path of the sound waves emitted by the multibeam echo sounder based on the sound velocity values ​​of multiple water layers. The propagation time and seabed reflection point location of the sound waves emitted by the multibeam echo sounder are corrected to obtain the first corrected water depth data. The second correction module 95 can be used to compare the tide level data with the tide level reference data, obtain the difference between the tide level reference height in the tide level reference data and the current tide level height in the tide level data, and add the first corrected water depth data and the difference to obtain the second corrected water depth data. The safety assessment module 97 can be used to construct a first three-dimensional seabed topographic map based on the second corrected water depth data, and calculate the difference between the water depth of the seabed surface and the water depth around the offshore photovoltaic pile foundation in the second corrected water depth data based on the first three-dimensional seabed topographic map, as the first scour value, and output the safety assessment result based on the first scour value.

[0072] According to an exemplary embodiment of this disclosure, before acquiring the raw water depth data, sound velocity profile data, and tide level data collected by the multibeam echo sounder, the data acquisition module 91 further includes the following steps in assessing the safety of the marine photovoltaic pile foundation: monitoring the hull attitude data of the echo sounder using an attitude sensor; and adjusting the beam direction based on the hull attitude data to correct the deviation in beam direction caused by the swaying of the echo sounder.

[0073] According to an exemplary embodiment of this disclosure, the process by which the security assessment module 97 outputs a security assessment result based on a first scour value includes: if the first scour value is greater than a first scour threshold, then outputting a first security assessment result; if the first scour value is less than or equal to the first scour threshold, then determining a second scour value, wherein the second scour value is a scour value corresponding to a second three-dimensional seabed topographic map, and the second three-dimensional seabed topographic map is a topographic map obtained after being updated from the first three-dimensional seabed topographic map after a preset time; if the second scour value minus the first scour value is greater than or equal to the second scour threshold, then outputting a second security assessment result; and if the second scour value minus the first scour value is less than or equal to the second scour threshold, then outputting a third security assessment result.

[0074] According to an exemplary embodiment of this disclosure, the process by which the data acquisition module 91 determines the actual coverage of the multibeam echo sounder includes: acquiring the performance parameters of the multibeam echo sounder, including beam angle, operating frequency, and maximum detection depth; calculating the theoretical coverage of the echo sounder's single-voyage echo sounding based on the performance parameters; and adjusting the theoretical coverage by combining the echo sounder's speed with the data acquisition frequency of the multibeam echo sounder to determine the actual coverage of the multibeam echo sounder.

[0075] According to an exemplary embodiment of this disclosure, the process by which the first correction module 93 compares the tide level data with the tide level reference data and obtains the difference between the tide level reference height in the tide level reference data and the current tide level height in the tide level data includes: obtaining time series data of real-time tide levels, the time series data containing the correspondence between timestamps and tide level heights; obtaining a reference tide level height matching the timestamp from the tide level reference database, the reference tide level height being determined based on long-term statistical data; and calculating the difference between the tide level reference height in the tide level reference data and the current tide level height in the tide level data at the same timestamp.

[0076] According to an exemplary embodiment of the present disclosure, before constructing a first three-dimensional seabed topographic map based on the second corrected water depth data, the process of the second correction module 95 performing outlier processing on the second corrected water depth data further includes: if the second corrected water depth data is determined to be an outlier, determining a replacement value and replacing the outlier value.

[0077] According to an exemplary embodiment of this disclosure, the second correction module 95 determines a replacement value, and the process of replacing the outlier includes: determining a plurality of normal values ​​adjacent to the outlier based on the K-nearest neighbor algorithm, calculating the average or weighted average of each normal value as a replacement value, and replacing the outlier with the replacement value.

[0078] Since the functional modules of the marine photovoltaic pile foundation safety assessment device of this disclosure are the same as those in the above-described method embodiments, they will not be described again here.

[0079] In exemplary embodiments of this disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the methods described above is stored. In some possible implementations, various aspects of this disclosure may also be implemented as a program product including program code, which, when the program product is run on a terminal device, causes the terminal device to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure.

[0080] The program product for implementing the above-described method according to embodiments of the present disclosure may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto. In this document, the readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0081] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical disks, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0082] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0083] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0084] Program code for performing the operations of this disclosure can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing devices can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0085] In an exemplary embodiment of this disclosure, an electronic device capable of implementing the above-described method is also provided.

[0086] Those skilled in the art will understand that various aspects of this disclosure can be implemented as a system, method, or program product. Therefore, various aspects of this disclosure can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software aspects, collectively referred to herein as a "circuit," "module," or "system."

[0087] The following reference Figure 10 To describe an electronic device 1000 according to this embodiment of the present invention. Figure 10 The electronic device 1000 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0088] like Figure 10 As shown, the electronic device 1000 is manifested in the form of a general-purpose computing device. The components of the electronic device 1000 may include, but are not limited to: at least one processing unit 1010, at least one storage unit 1020, a bus 1030 connecting different system components (including storage unit 1020 and processing unit 1010), and a display unit 1040.

[0089] The storage unit stores program code, which can be executed by the processing unit 1010 to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of the present invention. For example, the processing unit 1010 can perform, as follows: Figure 1 Steps S10 to S16 are shown in the diagram.

[0090] Storage unit 1020 may include readable media in the form of volatile storage units, such as random access memory (RAM) 10201 and / or cache memory 10202, and may further include read-only memory (ROM) 10203.

[0091] Storage unit 1020 may also include a program / utility 10204 having a set (at least one) program module 10205, such program module 10205 including but not limited to: operating system, one or more application programs, other program modules and program data, each or some combination of these examples may include an implementation of a network environment.

[0092] Bus 1030 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the multiple bus structures.

[0093] Electronic device 1000 can also communicate with one or more external devices 1100 (e.g., keyboard, pointing device, Bluetooth device, etc.), one or more devices that enable a user to interact with electronic device 1000, and / or any device that enables electronic device 1000 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 1050. Furthermore, electronic device 1000 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 1060. As shown, network adapter 1060 communicates with other modules of electronic device 1000 via bus 1030. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 1000, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0094] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the methods according to the embodiments of this disclosure.

[0095] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of the present invention, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0096] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0097] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0098] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for safety assessment of offshore photovoltaic pile foundations, characterized in that, include: The location data of the offshore photovoltaic pile foundation is acquired, and the original detection route is determined based on the location data. The actual coverage range of the multibeam echo sounder is determined. The multibeam echo sounder is installed on a sounding vessel and includes an attitude sensor and a multibeam transducer. The original detection route is adjusted according to the actual coverage range to obtain the target detection route. Based on the target detection route, the original water depth data, sound velocity profile data, and tide level data collected by the multibeam echo sounder are acquired. The sound velocity profile data includes the sound velocity values ​​of multiple water layers. The propagation path of the sound wave emitted by the multibeam echo sounder is calculated based on the sound velocity values ​​of the multiple water layers. The propagation time and seabed reflection point position of the sound wave emitted by the multibeam echo sounder are corrected based on the propagation path of the sound wave to obtain the first corrected water depth data. The tide level data is compared with the tide level reference data to obtain the difference between the tide level reference height in the tide level reference data and the current tide level height in the tide level data. The first corrected water depth data and the difference are added together to obtain the second corrected water depth data. A first three-dimensional seabed topographic map is constructed based on the second corrected water depth data, and the difference between the water depth of the seabed surface in the second corrected water depth data and the water depth around the offshore photovoltaic pile foundation is calculated based on the first three-dimensional seabed topographic map as the first scour value. A safety assessment result is output based on the first scour value.

2. The method for safety assessment of offshore photovoltaic pile foundations according to claim 1, characterized in that, The multibeam echo sounder is installed on a sounding vessel. The multibeam echo sounder includes an attitude sensor and a multibeam transducer. The multibeam transducer is used to transmit and receive sound waves so that the multibeam echo sounder can acquire the raw water depth data. The direction in which the multibeam transducer transmits sound waves is the beam direction. Before acquiring the raw water depth data, sound velocity profile data, and tide level data acquired by the multibeam echo sounder, the safety assessment method for offshore photovoltaic pile foundations also includes: The attitude data of the depth sounder are monitored by the attitude instrument. The beam direction is adjusted based on the ship attitude data to correct the deviation in beam direction caused by the rolling of the depth sounding vessel.

3. The method for safety assessment of offshore photovoltaic pile foundations according to claim 1, characterized in that, The safety assessment result is output based on the first flushing value, including: If the first flushing value is greater than the first flushing threshold, then the first safety assessment result is output. If the first scour value is less than or equal to the first scour threshold, then a second scour value is determined. The second scour value is the scour value corresponding to the second three-dimensional seabed topographic map. The second three-dimensional seabed topographic map is the topographic map obtained after the first three-dimensional seabed topographic map is updated after a preset time. If the second flushing value minus the first flushing value is greater than or equal to the second flushing threshold, then the second security assessment result is output. If the second flushing value minus the first flushing value is less than or equal to the second flushing threshold, then the third security assessment result is output.

4. The method for safety assessment of offshore photovoltaic pile foundations according to claim 1, characterized in that, Determine the actual coverage area of ​​the multibeam echo sounder system, including: Obtain the performance parameters of the multibeam echo sounder system, including beam angle, operating frequency, and maximum detection depth; The theoretical coverage range of the depth sounding vessel during a single voyage is calculated based on the performance parameters. By combining the sailing speed of the sounding vessel with the data acquisition frequency of the multibeam echo sounder, the theoretical coverage range is adjusted to determine the actual coverage range of the multibeam echo sounder.

5. The method for safety assessment of offshore photovoltaic pile foundations according to claim 1, characterized in that, The tide level data is compared with the tide level reference data to obtain the difference between the tide level reference height in the tide level reference data and the current tide level height in the tide level data, including: Acquire real-time tide level time series data, wherein the time series data includes the correspondence between timestamps and tide heights; The reference tide height matching the timestamp is obtained from the tide reference database, and the reference tide height is determined based on long-term statistical data; Calculate the difference between the reference tide height in the tide reference data and the current tide height in the tide data at the same timestamp.

6. The method for safety assessment of offshore photovoltaic pile foundations according to claim 5, characterized in that, Before constructing the first three-dimensional seabed topographic map based on the second corrected water depth data, outlier processing is performed on the second corrected water depth data, including: If the second corrected water depth data is determined to be an outlier, a replacement value is determined and the outlier is replaced.

7. The method for safety assessment of offshore photovoltaic pile foundations according to claim 6, characterized in that, Determine alternative values ​​and replace the outliers, including: The K-nearest neighbor algorithm is used to determine multiple normal values ​​that are near the outlier. The average or weighted average of the normal values ​​is calculated as a replacement value, and the outlier is replaced with the replacement value.

8. A safety assessment device for offshore photovoltaic pile foundations, characterized in that, include: The data acquisition module is used to acquire the location data of the offshore photovoltaic pile foundation, determine the original detection route based on the location data, and determine the actual coverage range of the multibeam echo sounder. The multibeam echo sounder is installed on a sounding vessel and includes an attitude sensor and a multibeam transducer. The original detection route is adjusted according to the actual coverage range to obtain the target detection route. Based on the target detection route, the module acquires the original water depth data, sound velocity profile data, and tide level data collected by the multibeam echo sounder. The sound velocity profile data includes the sound velocity values ​​of multiple water layers. The first correction module is used to calculate the propagation path of the sound wave emitted by the multibeam echo sounding system based on the sound velocity values ​​of the multiple water layers, and to correct the propagation time and seabed reflection point position of the sound wave emitted by the multibeam echo sounding system based on the propagation path of the sound wave, so as to obtain the first corrected water depth data. The second correction module is used to compare the tide level data with the tide level reference data, obtain the difference between the tide level reference height in the tide level reference data and the current tide level height in the tide level data, and add the first corrected water depth data and the difference to obtain the second corrected water depth data. The safety assessment module is used to construct a first three-dimensional seabed topographic map based on the second corrected water depth data, and to calculate the difference between the water depth of the seabed surface in the second corrected water depth data and the water depth around the offshore photovoltaic pile foundation based on the first three-dimensional seabed topographic map, as a first scour value, and to output the safety assessment result based on the first scour value.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the safety assessment method for offshore photovoltaic pile foundations as described in any one of claims 1 to 7.

10. An electronic device, characterized in that, include: processor; A memory for storing one or more programs, which, when executed by the processor, cause the processor to implement the offshore photovoltaic pile foundation safety assessment method as described in any one of claims 1 to 7.

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