Methods, devices, equipment, media, and products for determining the location of sound receiving devices.

Abstract

This application discloses a method, apparatus, device, medium, and product for determining the location of a sound receiving device. The method includes: acquiring the tower structural parameters of the wind turbine generator tower and determining the sound conduction characteristics of the tower based on the tower structural parameters; for each location in the tower, determining the target sound pressure at each location under the action of the sound excitation signal, based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics; calculating the target sound field coverage and target signal-to-noise ratio based on the target sound pressure, sound field coverage calculation formula, and signal-to-noise ratio calculation formula corresponding to each location; and determining the placement position of the sound receiving device in the tower based on the target sound field coverage and the target signal-to-noise ratio. According to the embodiments of this application, the signal collected by the sound receiving device in the wind turbine generator has better quality.

Description

Technical Field

[0001] This application belongs to the field of wind turbine blade monitoring, and in particular relates to a method, device, equipment, medium and product for determining the location of a sound receiving device. Background Technology

[0002] As an important form of clean energy, wind power technology is continuously advancing towards larger scale and higher efficiency. With the continuous increase in single-unit capacity, the blade length, tower height, and operating load of wind turbines have increased significantly, leading to increasingly prominent problems of overall structural vibration and aerodynamic noise.

[0003] Acoustic monitoring, due to its non-contact, long-distance, and all-weather characteristics, has become one of the important means of structural health monitoring for wind turbines. The sensor array used for sound acquisition, as the core component of the acoustic monitoring system, directly affects the quality of signal acquisition and diagnostic accuracy through its arrangement.

[0004] Therefore, how to deploy sensors in wind turbines to ensure the quality of signal acquisition is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides a method, apparatus, device, medium, and product for determining the location of a sound receiving device, which can improve the quality of the signals collected by the sound receiving device in a wind turbine.

[0006] In a first aspect, embodiments of this application provide a method for determining the location of a sound receiving device, applied to a wind turbine generator set. The wind turbine generator set includes at least one sound excitation device deployed in the blades. The method includes: acquiring the tower structure parameters of the tower in the wind turbine generator set, and determining the sound conduction characteristics of the tower based on the tower structure parameters; for each location in the tower, determining the target sound pressure under the action of the sound excitation signal based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics; calculating the target sound field coverage and the target signal-to-noise ratio based on the target sound pressure, the sound field coverage calculation formula, and the signal-to-noise ratio calculation formula corresponding to each location; and determining the placement location of the sound receiving device in the tower based on the target sound field coverage and the target signal-to-noise ratio.

[0007] In one embodiment, for each position within the tower, the target sound pressure at each position under the action of the sound excitation signal is determined based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics. This includes: acquiring the excitation position information of the sound excitation device; for each position within the tower, constructing a sound field control equation describing the propagation law of the sound excitation signal in the tower based on the excitation position information and the corresponding position information; constructing boundary constraint conditions corresponding to the tower based on the sound conduction characteristics and the tower structural parameters; and for each position within the tower, determining the target sound pressure at each position under the action of the sound excitation signal based on the sound field control equation, the boundary constraint conditions, the sound excitation signal, and the transfer function between the sound excitation device and that position.

[0008] In one embodiment, for each position in the tower, a sound field control equation describing the propagation law of the sound excitation signal in the tower is constructed based on the excitation position information and the position information corresponding to that position. This includes: for each position in the tower, determining a first parameter characterizing the propagation law of the sound excitation signal in the tower based on the position information corresponding to that position and the structural characteristics of the tower; and constructing a sound field control equation describing the propagation law of the sound excitation signal in the tower based on the first parameter, the excitation position information, and the position information corresponding to that position.

[0009] In one embodiment, the wind turbine generator set includes at least a first acoustic excitation device and a second acoustic excitation device deployed in different blades, wherein there is a target time delay between the first acoustic excitation signal emitted by the first acoustic excitation device and the second acoustic excitation signal emitted by the second acoustic excitation device; for each position in the tower, the target sound pressure at each position under the action of the acoustic excitation signal is determined according to the sound field control equation, boundary constraints, and the transfer function between the acoustic excitation device and the position, including: determining the first sound pressure at the position under the action of the first acoustic excitation signal and the second sound pressure at the position under the action of the second acoustic excitation signal according to the sound field control equation, boundary constraints, the first acoustic excitation signal, the second acoustic excitation signal, and the transfer function between the acoustic excitation device and the position; and accumulating the first sound pressure and the second sound pressure to obtain the target sound pressure corresponding to the position.

[0010] In one embodiment, the target sound field coverage and target signal-to-noise ratio are calculated based on the target sound pressure, sound field coverage calculation formula, and signal-to-noise ratio calculation formula corresponding to each location. This includes: determining a preset number of target locations within the tower; determining the root mean square (RMS) sound pressure based on a preset RMS calculation formula and the target sound pressure corresponding to each target location; determining the sound pressure level of the RMS sound pressure corresponding to each target location based on a preset sound pressure quantization formula; summing the sound pressure levels corresponding to the preset number of target locations to obtain the target sound field coverage; for each target location within the tower, determining the location signal-to-noise ratio corresponding to each target location based on the signal-to-noise ratio calculation formula and the target sound pressure; and summing the location signal-to-noise ratios corresponding to the preset number of target locations to obtain the target signal-to-noise ratio.

[0011] In one embodiment, for each target location in the tower, the position signal-to-noise ratio (SNR) is determined according to the SNR calculation formula and the target sound pressure. This includes: for each target location in the tower, determining the power spectral density corresponding to each target location according to a preset power spectral density formula and the target sound pressure; integrating the power spectral density using a first frequency band corresponding to the noise and a second frequency band corresponding to the sound excitation signal as integration ranges to obtain the noise power corresponding to the noise and the excitation power corresponding to the sound excitation signal; and calculating the position SNR according to the SNR calculation formula, the noise power, and the excitation power.

[0012] In one embodiment, determining a preset number of target positions from the tower and accumulating the sound pressure levels corresponding to the preset number of target positions to obtain the target sound field coverage includes: dividing the tower into a preset number of tower segments along the axial direction; determining the corresponding target positions from each tower segment to obtain the preset number of target positions, and accumulating the sound pressure levels corresponding to the preset number of target positions to obtain the target sound field coverage.

[0013] In one embodiment, determining the placement position of the sound receiving device in the tower based on the target sound field coverage and the target signal-to-noise ratio includes: constructing a target function based on the target sound field coverage, the target signal-to-noise ratio, and their respective weighting coefficients; and, if the target function is determined to be greater than or equal to a preset threshold, using the position corresponding to the target function as the placement position of the sound receiving device.

[0014] Secondly, embodiments of this application provide a location determination device for a sound receiving device, applied to a wind turbine generator set. The wind turbine generator set includes at least one sound excitation device deployed in the blades. The device includes: The first determining module is used to determine the tower structure parameters of the wind turbine generator set and determine the sound conduction characteristics of the tower based on the tower structure parameters; The second determining module is used to determine the target sound pressure at each position in the tower under the action of the sound excitation signal, based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics. The calculation module is used to calculate the target sound field coverage and target signal-to-noise ratio based on the target sound pressure, sound field coverage calculation formula and signal-to-noise ratio calculation formula corresponding to each location; The third determining module is used to determine the placement position of the sound receiving device in the tower based on the target sound field coverage and the target signal-to-noise ratio.

[0015] Thirdly, embodiments of this application provide a location determination device for a sound receiving device, the device including: a processor and a memory storing computer program instructions; when the processor executes the computer program instructions, it implements the location determination method for a sound receiving device in the first aspect or any embodiment of the first aspect.

[0016] Fourthly, a computer-readable storage medium storing computer program instructions, which, when executed by a processor, implement the method for determining the location of a sound receiving device in the first aspect or any embodiment of the first aspect.

[0017] Fifthly, embodiments of this application provide a computer program product in which instructions, when executed by a processor of an electronic device, cause the electronic device to perform a position determination method for a sound receiving device as described in the first aspect or any embodiment of the first aspect.

[0018] The method, apparatus, device, medium, and product for determining the location of the sound receiving device in this application's embodiments ensure the authenticity of subsequent analysis processes by acquiring the tower structure parameters corresponding to the tower and determining the sound conduction characteristics based on these parameters. The target sound pressure at each location is calculated based on the sound excitation signal and sound conduction characteristics, completing the physical mapping from the sound source to the spatial sound field. Furthermore, the target sound pressure is used to calculate the target sound field coverage and target signal-to-noise ratio, transforming the complex acoustic response into two important quantitative indicators characterizing the breadth of spatial coverage and signal quality. The deployment location is determined collaboratively based on these two indicators, ensuring that the determined deployment location guarantees both effective coverage of the monitoring area and sufficient signal-to-noise ratio for the received signal. It is understood that this application's embodiments overcome the arbitrariness and limitations of traditional deployment methods relying on manual experience, significantly improving the accuracy and reliability of sound receiving device placement, and guiding the deployment of sound receiving devices to achieve better signal quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic flowchart of a method for determining the location of a sound receiving device according to an embodiment of this application is shown; Figure 2 This application shows a schematic diagram of the architecture of a wind turbine generator set according to one embodiment of the present application; Figure 3 A schematic flowchart of a method for determining the location of a sound receiving device according to an embodiment of this application is shown; Figure 4 A schematic flowchart of a method for determining the location of a sound receiving device according to an embodiment of this application is shown; Figure 5 shows a flowchart illustrating a method for determining the location of a sound receiving device according to an embodiment of this application; Figure 6 A schematic diagram illustrating the change of sound pressure with altitude according to an embodiment of this application is shown; Figure 7 A schematic diagram illustrating the signal-to-noise ratio as a function of altitude according to an embodiment of this application is shown; Figure 8 A schematic diagram of the microphone placement position provided in one embodiment of this application is shown; Figure 9 A schematic diagram of a microphone mounting method provided in one embodiment of this application is shown; Figure 10 This is a schematic diagram of the structure of a position determination device for a sound receiving device provided in another embodiment of this application; Figure 11 This is a schematic diagram of the location determination device of a sound receiving device provided in another embodiment of this application. Detailed Implementation

[0021] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0023] As an important form of clean energy, wind power technology is continuously advancing towards larger scale and higher efficiency. With the continuous increase in single-unit capacity, the blade length, tower height, and operating load of wind turbines are significantly increasing, leading to increasingly prominent issues of structural vibration and aerodynamic noise. Therefore, effective monitoring of wind turbines is crucial for preventing malfunctions and ensuring safe operation.

[0024] In related technologies, acoustic monitoring, due to its non-contact, long-distance, and all-weather characteristics, has become one of the important means of structural health monitoring for wind turbines. Sensor arrays (e.g., microphones), as the core component of acoustic monitoring systems, directly affect the quality of signal acquisition and diagnostic accuracy through their placement. The placement of sensor arrays often relies on manual experience, lacking systematic acoustic theoretical guidance and failing to fully consider the influence of the tower structure on the sound field distribution. This results in poor consistency of sound pressure signals received by each sensor, easily creating monitoring blind spots in critical areas, severely impacting the coverage and reliability of fault detection. Furthermore, related technologies neglect the complexity of signal propagation within the curved metal structure of the tower, failing to consider physical effects such as reflection, diffraction, interference, and path attenuation during sound wave propagation. This layout method, focusing only on geometric spacing while ignoring propagation path loss, significantly reduces the overall signal-to-noise ratio and fidelity of the signals acquired by the sensor array, making subsequent accurate reconstruction and identification of sound source characteristics difficult.

[0025] Therefore, how to place microphones in wind turbines to ensure the quality of signal acquisition is a technical problem that urgently needs to be solved by those skilled in the art.

[0026] To address the problems of the prior art, embodiments of this application provide a method, apparatus, device, medium, and product for determining the location of a sound receiving device. The method for determining the location of a sound receiving device provided in this application embodiment will be described first below.

[0027] Figure 1A schematic flowchart illustrating a method for determining the location of a sound receiving device according to an embodiment of this application is shown. Figure 1 As shown, the method for determining the location of the sound receiving device includes the following steps: S110. Obtain the tower structure parameters of the wind turbine generator set and determine the sound conduction characteristics of the tower based on the tower structure parameters.

[0028] S120. For each position in the tower, determine the target sound pressure at each position under the action of the sound excitation signal based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics.

[0029] S130. Calculate the target sound field coverage and target signal-to-noise ratio based on the target sound pressure, sound field coverage calculation formula and signal-to-noise ratio calculation formula corresponding to each location.

[0030] S140. Determine the placement position of the sound receiving device in the tower based on the target sound field coverage and the target signal-to-noise ratio.

[0031] In some embodiments, in S110, the tower structure parameters of the tower in the wind turbine generator set can be obtained, and the sound conduction characteristics of the tower can be determined based on the tower structure parameters.

[0032] For example, the method for determining the location of the sound receiving device can be applied to a wind turbine generator set, which includes a tower and blades. The tower serves as a support structure for the wind turbine generator set, supporting the blades and nacelle, among other structures. The tower is typically a cylindrical or conical tube. The blades convert wind energy into mechanical energy to generate wind power. Sound excitation devices are deployed within the blades to generate corresponding sound excitation signals.

[0033] In one example, the sound excitation device can be a device for generating a preset sound signal (i.e., a sound excitation signal), such as a speaker or a sound source.

[0034] The sound excitation device can be deployed at any position within the blade according to different needs. For example, considering the ease of installation, the sound excitation device can be deployed at the root of the blade, that is, near the center of rotation within the blade.

[0035] In one example, Figure 2 A schematic diagram of the architecture of a wind turbine generator set according to an embodiment of this application is shown, as follows: Figure 2 As shown, the wind turbine generator set 200 may include a tower 210 and three blades 220. The sound excitation device can be deployed on any blade of the wind turbine generator set, or the sound excitation device can be deployed on each blade of the wind turbine generator set.

[0036] For example, tower structural parameters can be used to characterize the physical properties of the tower.

[0037] In one example, tower structural parameters may include the tower's geometric parameters, such as height, diameter, and wall thickness. Tower structural parameters may also include material parameters, such as metal type and density.

[0038] For example, the sound conduction characteristics of the tower can be determined based on the tower's structural parameters. These sound conduction characteristics can be used to describe the physical properties of sound propagation within the tower structure, including effects such as absorption, reflection, diffraction, and interference.

[0039] In some embodiments, in S120, for each location in the tower, the target sound pressure at each location under the action of the sound excitation signal can be determined based on the sound excitation signal and the sound conduction characteristics. The sound excitation signal can be a sound signal emitted by a sound excitation device deployed in the blades.

[0040] In one example, the sound excitation device can generate sound excitation according to a pre-built sound excitation signal model. For example, the sound excitation signal model can be a trigonometric function, a sine function, or a cosine function.

[0041] In another example, where each blade of a wind turbine is equipped with an acoustic excitation device, a time delay parameter can be introduced into the acoustic excitation signal model to avoid overlap of the acoustic excitation signals generated by the various devices. The acoustic excitation signal model can be represented by the following formula (1):

[0042] in, Representing the The amplitude of the sound excitation signal, For the first The frequency of the sound excitation signal, For the first The time delay parameter of the sound excitation signal. Further, the time delay parameter... The following conditions must be met, as shown in formula (2):

[0043] In formula (2), and Representing the first The and the first The time delay parameter of the sound excitation signal, The maximum propagation distance inside the tower. This represents the speed at which sound travels within the tower.

[0044] For example, the target sound pressure at each location under the action of the sound excitation signal can be determined based on the sound excitation signal and the physical characteristics of sound propagation in the tower. ,in, For the first A sound excitation signal at position The target sound pressure can be understood as representing the expected sound pressure level at each location within the tower under the influence of a sound excitation signal.

[0045] In some embodiments, in S130, the target sound field coverage and the target signal-to-noise ratio can be calculated according to the target sound pressure, sound field coverage calculation formula and signal-to-noise ratio calculation formula corresponding to each location.

[0046] For example, the sound field coverage calculation formula can be used to quantify the proportion of the sound field area that the sound receiving device can effectively monitor.

[0047] For example, the signal-to-noise ratio (SNR) calculation formula can be used to calculate the ratio of the acoustic excitation signal to the noise in order to evaluate signal quality.

[0048] In some optional embodiments, in order to realize the calculation of target sound field coverage and target signal-to-noise ratio, as another implementation of this application, this application also provides another implementation of the method for determining the placement position of the sound receiving device, as detailed in the following embodiments.

[0049] Figure 3 A schematic flowchart illustrating a method for determining the location of a sound receiving device according to an embodiment of this application is shown. Figure 3 As shown, the method for determining the location of the sound receiving device includes the following steps: S310. Determine a preset number of target positions from within the tower.

[0050] For example, the preset quantity can represent the number of sound receiving devices that need to be deployed in the tower based on the detection requirements of the blades and the tower structure.

[0051] For example, the target location may characterize the position of each of a predetermined number of sound receiving devices within the tower. It is understood that the target location may be the initial position for deploying the sound receiving devices.

[0052] In one example, the tower can be divided into a predetermined number of tower segments along its axial direction. For each tower segment, any position within that segment can be used as a target position. In this way, a predetermined number of target positions, equal to the number of tower segments, can be obtained over the entire tower height. The predetermined number of tower segments can be divided along the tower's axial direction equally or according to the tower's structural characteristics.

[0053] In another example, the preset number of sound receiving devices can be evenly distributed, meaning that the target location of each sound receiving device can be directly determined based on the length of the tower and the preset number.

[0054] S320. Determine the root mean square sound pressure based on the preset root mean square calculation formula and the target sound pressure corresponding to each target location.

[0055] In one example, the root mean square sound pressure can be calculated using the following formula (3). :

[0056] in, Representing the Theoretically received acoustic excitation signal at each target location; This represents the sampling duration of the sound receiving device at the k-th target location.

[0057] S330. Determine the sound pressure level of the root mean square sound pressure corresponding to each target location according to the preset sound pressure quantization formula.

[0058] In one example, the sound pressure level corresponding to each target location can be calculated according to the following formula (4). :

[0059] In the formula, Represents the reference sound pressure level.

[0060] S340. Accumulate the sound pressure levels corresponding to a preset number of target locations to obtain the target sound field coverage.

[0061] For example, the number of locations corresponding to the target position whose sound pressure level meets the standard can be determined based on a preset indication function. The target sound field coverage rate is then determined by the number of locations meeting the standard and the preset quantity. That is, it can be understood that the target sound field coverage rate represents the proportion of locations with sound pressure levels meeting the standard to the preset quantity when sound receiving devices are deployed according to the target location.

[0062] In one example, if the sound pressure level at the target location is greater than a preset sound pressure threshold, the target location can be deemed to meet the standard. For example, this can be determined using the indicator function described in formula (5). ,when greater than the sound pressure level threshold Set the indicator function to 1 to count the positions that have met the criteria:

[0063] Furthermore, the target sound field coverage is calculated using the following formula (6). :

[0064] in, This represents the preset quantity.

[0065] In some optional embodiments, the tower is divided into a predetermined number of tower segments along the axial direction. A corresponding target position is determined from each tower segment to obtain a predetermined number of target positions. The sound pressure levels corresponding to these predetermined number of target positions are then accumulated to obtain the target sound field coverage.

[0066] For example, when the tower is divided into a preset number of tower segments along the axial direction, for the sound pressure level corresponding to the target position in each tower segment, it can be determined by an indicator function whether the sound pressure level corresponding to the target position in the tower segment is greater than a preset sound pressure level threshold. If so, the target position is counted, and then the target positions that meet the standard in all tower segments are counted. Based on the target positions that meet the standard in all tower segments and the preset number, the target sound field coverage rate is calculated.

[0067] It is understood that in this embodiment, the tower is divided axially into equal parts or into a predetermined number of tower segments according to structural features, ensuring representativeness and uniformity in the height direction and avoiding deviations that may occur in the sound field assessment due to local special cases. Furthermore, selecting target locations within each tower segment further constructs a key area spatially covering the entire tower, allowing the sound field analysis to move beyond a few random points and gain a global perspective. By accumulating the results of whether the sound pressure levels corresponding to these target locations reach a threshold and calculating their ratio to a predetermined number, the final target sound field coverage becomes an intuitive and quantifiable performance indicator, thereby improving the reliability of the sound receiving device deployment.

[0068] S350. For each target location in the tower, determine the position signal-to-noise ratio corresponding to each target location based on the signal-to-noise ratio calculation formula and the target sound pressure.

[0069] For example, for each target location in the tower, the noise power and the excitation power corresponding to the sound excitation signal can be determined from the target sound pressure, and the position signal-to-noise ratio corresponding to each target location can be calculated according to the signal-to-noise ratio calculation formula, the noise power and the excitation power.

[0070] In some optional embodiments, for each target location within the tower, the power spectral density corresponding to each target location is determined based on a preset power spectral density formula and the target sound pressure level. The power spectral density is integrated using the first frequency band corresponding to the noise and the second frequency band corresponding to the sound excitation signal as integration ranges, respectively, to obtain the noise power corresponding to the noise and the excitation power corresponding to the sound excitation signal. The position signal-to-noise ratio is then calculated based on the signal-to-noise ratio calculation formula, the noise power, and the excitation power.

[0071] For example, the first frequency band can be set by a technician to characterize the noise frequency band corresponding to the sound signal transmission process in the tower; the second frequency band can be set based on the sound excitation signal.

[0072] In one example, the preset power spectral density formula can be characterized by the following formula (7), and the power spectral density at the target location can be determined by the following formula (8). :

[0073] Where j is the imaginary unit.

[0074] Furthermore, the excitation power and noise power are calculated using the following formulas (8) and (9) respectively:

[0075] In the formula, This represents the excitation power corresponding to the acoustic excitation signal. and Represents the main frequency band range of the signal. Represents noise power. and Represents a specific range of noise frequency bands.

[0076] Furthermore, for each target location, the position signal-to-noise ratio can be obtained by calculating the ratio between the excitation power and the noise power.

[0077] It is understood that in this embodiment, the time-domain sound pressure is converted into frequency-domain energy distribution using a preset power spectral density formula, thereby characterizing the energy characteristics of the sound excitation signal at different frequencies. Furthermore, the first and second frequency bands are specifically selected for integration, achieving frequency band decoupling of noise energy and signal energy, effectively suppressing mutual interference that may be caused by frequency band overlap. Based on the calculated noise power and excitation power, the position signal-to-noise ratio is determined using a signal-to-noise ratio formula, transforming the complex sound field environment into an intuitive and comparable signal-to-noise ratio indicator. This not only objectively reflects the prominence of the effective signal relative to background noise at the target location but also provides a direct basis for the reliability of blade detection and can guide the adjustment of the sound receiving device layout, ensuring the effectiveness of the sound receiving device layout in noisy environments.

[0078] S360. Accumulate the position signal-to-noise ratios corresponding to a preset number of target positions to obtain the target signal-to-noise ratio.

[0079] In one example, the target signal ratio M(r) can be calculated using the following formula (10):

[0080] It is understandable that the target signal-to-noise ratio can characterize the average signal-to-noise ratio of all sound receiving devices after the sound receiving devices are deployed according to the target location.

[0081] For example, a predetermined number of target locations are determined within the tower, and the root mean square (RMS) sound pressure is determined based on a predetermined RMS calculation formula and the target sound pressure corresponding to each target location. Further, the sound pressure level of the RMS sound pressure corresponding to each target location is determined based on a predetermined sound pressure quantization formula, and the sound pressure levels corresponding to the predetermined number of target locations are accumulated to obtain the target sound field coverage. For each target location within the tower, the positional signal-to-noise ratio (SNR) corresponding to each target location is determined based on a signal-to-noise ratio (SNR) calculation formula and the target sound pressure, and the positional SNRs corresponding to the predetermined number of target locations are accumulated to obtain the target SNR. Figure 3In the illustrated embodiment, based on root mean square (RMS) calculation and sound pressure level (SPL) quantization, the transient sound pressure at each target location is converted into stable and comparable SPL values. Then, the target sound field coverage is obtained through cumulative statistical analysis. It can be understood that the target sound field coverage effectively characterizes the breadth and uniformity of sound field energy distribution in the spatial dimension, thereby measuring whether the sound field adequately covers key areas. Furthermore, for each target location, the target SPL is obtained by calculating and averaging the positional signal-to-noise ratios (SNRs) at each target location. It can be understood that the target SNR reflects the prominence of effective sound excitation relative to background noise from a signal quality perspective, thereby measuring whether the signal is clear and usable within the coverage area. This embodiment, by combining these two methods, achieves a quantitative evaluation of the placement of the sound receiving device from two dimensions: coverage range and signal purity, providing theoretical guidance for the placement of the sound receiving device.

[0082] In some embodiments, in S140, the placement position of the sound receiving device in the tower can be determined based on the target sound field coverage and the target signal-to-noise ratio.

[0083] In some optional embodiments, a target function is constructed based on the target sound field coverage, the target signal-to-noise ratio, and their respective weighting coefficients. If the target function is determined to be greater than or equal to a preset threshold, the location corresponding to the target function is used as the placement location of the sound receiving device.

[0084] For example, the preset threshold can be set in advance by a technician, or the preset threshold can be determined based on the target sound field coverage, target signal-to-noise ratio and their respective weighting coefficients corresponding to multiple location combinations.

[0085] In one example, the objective function F(r) can be represented by the following formula (11):

[0086] In the formula, and These are the weighting coefficients, and .

[0087] Furthermore, the placement position of the sound receiving device in the tower can be determined using the following formula (12):

[0088] In the formula, This represents the optimal spatial location parameters of the sound receiving device, determined through iterative solutions. This represents the constraint space of the position parameters. It's understandable that by traversing all positions within the tower, the position with the maximum objective function can be used as the placement location for the sound receiving device within the tower.

[0089] In another example, technicians can determine a preset threshold based on the corresponding blade detection requirements, and if the objective function value is greater than the preset threshold, the position corresponding to the objective function value is used as the placement position of the sound receiving device in the tower.

[0090] In this embodiment, by assigning weight coefficients to the target sound field coverage and the target signal-to-noise ratio and constructing a unified objective function, the objective function can achieve a trade-off between the two indicators of wide coverage (i.e., target sound field coverage) and signal quality (i.e., target signal-to-noise ratio). In other words, the parameters can be flexibly adjusted according to actual needs, thereby adjusting the optimization direction for determining the placement location. Furthermore, by using a preset threshold to constrain the objective function, the selected location is guaranteed to achieve optimal configuration while meeting overall performance standards. It is understood that this embodiment, by transforming the complex problem of placing sound receiving devices into a clear numerical optimization process, improves the repeatability and reliability of the sound receiving device layout design.

[0091] For example, the structural parameters of the tower in a wind turbine generator are obtained, and the sound conduction characteristics of the tower are determined based on these parameters. Further, for each location within the tower, the target sound pressure under the sound excitation signal is determined based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics. The target sound field coverage and target signal-to-noise ratio are calculated based on the target sound pressure, sound field coverage formula, and signal-to-noise ratio formula for each location. Based on the target sound field coverage and target signal-to-noise ratio, the placement position of the sound receiving device within the tower is determined.

[0092] Figure 1 In the illustrated embodiment, the authenticity of the subsequent analysis process is ensured by obtaining the tower structure parameters corresponding to the tower and determining the sound conduction characteristics based on them. The target sound pressure at each location is calculated based on the sound excitation signal and sound conduction characteristics, completing the physical mapping from the sound source to the spatial sound field. Furthermore, the target sound pressure is used to calculate the target sound field coverage and target signal-to-noise ratio, transforming the complex acoustic response into two important quantitative indicators characterizing the breadth of spatial coverage and signal quality. The deployment location is determined collaboratively based on these two indicators, ensuring that the determined deployment location guarantees both effective coverage of the monitoring area and sufficient signal-to-noise ratio for the received signal. It is understood that the embodiments of this application overcome the arbitrariness and limitations of traditional deployment methods that rely on manual experience, significantly improving the accuracy and reliability of the sound receiving device's placement, and thus guiding the deployment of the sound receiving device, enabling the sound receiving device to collect signals of better quality.

[0093] In order to calculate the target sound pressure, as another implementation of this application, this application also provides another implementation of the method for determining the location of the sound receiving device, as detailed in the following embodiments.

[0094] Figure 4 A schematic flowchart illustrating a method for determining the location of a sound receiving device according to an embodiment of this application is shown. Figure 4 As shown, the method for determining the location of the sound receiving device includes the following steps: S410, Obtain the excitation position information of the sound excitation device.

[0095] For example, the excitation location information can characterize the spatial location information of the sound excitation device deployed in the blade.

[0096] In one example, if there are multiple sound excitation devices in a wind turbine generator set, the excitation location information corresponding to each sound excitation device can be obtained.

[0097] S420. For each position in the tower, based on the excitation position information and the corresponding position information, construct the sound field control equation to describe the propagation law of the sound excitation signal in the tower.

[0098] For example, the sound field control equation can be used to characterize the propagation law of the sound excitation signal in the tower.

[0099] In some optional embodiments, for each position in the tower, a first parameter characterizing the propagation law of the sound excitation signal in the tower is determined based on the position information corresponding to that position and the structural characteristics of the tower; based on the first parameter, the excitation position information and the position information corresponding to that position, a sound field control equation for describing the propagation law of the sound excitation signal in the tower is constructed.

[0100] In one example, the first parameter can be used to describe the propagation of the acoustic excitation signal along both the axial and circumferential directions of the tower. For instance, the first parameter can be characterized by the Laplace operator shown in formula (13):

[0101] in, For the Laplace operator; This represents the distance from the center of the tower to the location of the sound receiving device within the tower. This represents the azimuth angle corresponding to the location. Let r represent the height corresponding to the location, and r represent the location information. r can be represented as: .

[0102] Furthermore, the sound field control equation can be expressed as the following formula (14):

[0103] In the formula, For the first A sound excitation signal at position The sound pressure at that location, The sound source location vector, This represents the Dirac function. It is understandable that, by combining formulas (13) and (14), the first... A sound excitation signal at position The sound pressure at that location.

[0104] In this embodiment, the propagation law of sound in the tower is simplified by the first parameter, which ensures that the sound field control equation can not only describe the propagation law of the sound excitation signal in the tower well, but also ensure the convenience of calculation.

[0105] S430. Based on the sound conduction characteristics and tower structural parameters, construct the boundary constraint conditions corresponding to the tower.

[0106] In one example, the boundary constraints can be expressed as the following formula (15):

[0107] In the formula, Represents the inner wall boundary of the tower. This represents the surface sound absorption impedance coefficient. This represents the normal derivative.

[0108] S440. For each position in the tower, determine the target sound pressure at each position under the action of the sound excitation signal based on the sound field control equation, boundary constraints, sound excitation signal, and the transfer function between the sound excitation device and the position.

[0109] For example, the transfer function between the sound excitation device and the position can be represented using a Green's function. The Green's function can be expressed as follows: (16)

[0110] In the formula, Representative from the sound source Transmit to receiving point Green's function.

[0111] Therefore, the first A sound excitation signal at position The sound pressure at that point can be expressed as the following formula (17):

[0112] It is understandable that the above boundary constraints can be used to constrain multiple sound pressure values ​​calculated by the sound pressure calculation formula, thereby obtaining the first... A sound excitation signal at position The target sound pressure level at that location.

[0113] In some optional embodiments, the wind turbine generator set includes at least a first acoustic excitation device and a second acoustic excitation device deployed in different blades, wherein there is a target time delay between the first acoustic excitation signal emitted by the first acoustic excitation device and the second acoustic excitation signal emitted by the second acoustic excitation device. Further, based on the sound field control equation, boundary constraints, the first acoustic excitation signal, the second acoustic excitation signal, and the transfer function from the acoustic excitation device to the location, the first sound pressure under the action of the first acoustic excitation signal and the second sound pressure under the action of the second acoustic excitation signal are determined respectively, and the first sound pressure and the second sound pressure are accumulated to obtain the target sound pressure corresponding to the location.

[0114] For example, the target delay can characterize the time difference between sound excitation signals emitted by different first sound excitation devices.

[0115] For example, a wind turbine generator set may include at least two sound excitation devices (i.e., a first sound excitation device and a second sound excitation device), and the two sound excitation devices may be installed at different blade root positions of the wind turbine generator set.

[0116] In one example, the sound excitation signals emitted by multiple sound excitation devices in a wind turbine generator set can be configured as staggered excitation signals using a time delay method. Therefore, It can be expressed as the following formula (18):

[0117] In the formula, and Representing the first The start time and duration of an active acoustic excitation signal.

[0118] Therefore, the total sound pressure at position r inside the wind turbine tower can be further expressed as the following formula (19):

[0119] In the formula, This represents the number of sound sources. Since there are multiple sound excitation devices in a wind turbine generator set, for example, it can be set... .

[0120] In this embodiment, by setting different sound excitation devices on different blades and determining the target sound pressure at any position inside the tower through multiple sound excitation devices, the target sound pressure at any position can be accurately calculated, providing reliable data support for determining the position of the subsequent sound receiving device.

[0121] For example, for each location within the tower, a sound field control equation is constructed based on the excitation location information and the corresponding location information. Boundary constraints for the tower are then constructed based on the sound transmission characteristics and the tower's structural parameters. Further, for each location within the tower, the target sound pressure at each location under the influence of the sound excitation signal is determined based on the sound field control equation, the boundary constraints, the sound excitation signal, and the transfer function from the sound excitation device to that location. It is understood that... Figure 4 In the illustrated embodiment, a sound field control equation is constructed by fusing the location of the sound excitation device and the observation location. This equation characterizes the determination of the target sound pressure based on the propagation law of the sound excitation signal in the tower. Furthermore, boundary constraints are set based on the tower structural parameters and sound conduction characteristics to ensure that the determined target sound pressure reflects the reflection, absorption, and scattering effects of sound waves in a limited space. Moreover, by introducing a transfer function and solving the equations to obtain the target sound pressure at each location, a complete mapping from sound source characteristics to spatial sound field response is achieved, providing accurate data support for the layout of the sound receiving device.

[0122] Below, in conjunction with Figures 5 to 9 The following examples illustrate the method for determining the location of a sound receiving device.

[0123] Figure 5 shows a flowchart illustrating a method for determining the location of a sound receiving device according to an embodiment of this application; Figure 6 A schematic diagram illustrating the change of sound pressure with altitude according to an embodiment of this application is shown; Figure 7 A schematic diagram illustrating the signal-to-noise ratio as a function of altitude according to an embodiment of this application is shown; Figure 8 A schematic diagram of the microphone placement position provided in one embodiment of this application is shown; Figure 9 A schematic diagram of a microphone installation method provided in one embodiment of this application is shown.

[0124] For example, the active acoustic excitation device is placed at the root of each blade of the wind turbine (e.g., Figure 2As shown, an active acoustic excitation device can be deployed at the root of each of the three blades of a wind turbine. The active acoustic excitation device is powered by a pitch control unit in the wind turbine hub, and the frequency of the active acoustic excitation signal is set to 4 kHz. The active acoustic excitation device can output a staggered excitation signal; that is, any active acoustic excitation device operates for n minutes (e.g., 15 minutes), and after the active acoustic excitation device in the previous blade finishes operating, the active acoustic excitation device in the next blade begins operating, thus generating a staggered excitation signal.

[0125] In this process, technicians, based on the tower height and blade length, determined that 10 microphone sensors would be deployed within the tower, and numbered 1 to 10 in descending order of height to characterize the 10 microphone sensors. Furthermore, the tower could be divided into 10 segments, with the center of each segment serving as the initial position for the 10 microphone sensors.

[0126] Furthermore, it can be achieved through methods such as Figure 5 The method for determining the position of the sound receiving device shown determines the positions of the 10 microphone sensors within the tower. For example, Figure 5 As shown, in S501, the sound field control equation is established, the boundary constraints corresponding to the tower are determined, and the distribution of the active acoustic excitation signal in the tower is solved using the Green's function. In S502, the initial positions of the microphone sensors and the distribution of the active acoustic excitation signal are used to determine the theoretical sound pressure values ​​received by the 10 microphone sensors.

[0127] In one example, the theoretical sound pressure level may include an environmental noise term, and the determined theoretical sound pressure level received by the microphone sensor can be characterized by the following formula (20):

[0128] In the formula, Representing the Theoretically, each microphone sensor can receive active acoustic excitation signals. For the first Spatial coordinates of each microphone sensor This represents environmental noise.

[0129] In another example, such as Figure 6 As shown, the sound pressure amplitude corresponding to microphone sensor number 1 is 1, that of microphone sensor number 2 is 0.56, and that of microphone sensor number 3 is 0.43. It can be seen that the calculated theoretical sound pressure amplitude decreases with decreasing height, which conforms to the distribution rule of sound signals within the tower. It is understandable that the sound pressure amplitude here can be a normalized value.

[0130] In S503, the sound field coverage and average signal-to-noise ratio of the 10 microphones are calculated based on the theoretical sound pressure values ​​of the 10 microphones.

[0131] In one example, the average signal-to-noise ratio (SNR) can be obtained by calculating the SNR for each microphone sensor and then averaging it. The calculated SNR for each microphone sensor can be as follows: Figure 7 As shown, the signal-to-noise ratio (SNR) of microphone sensor number 10 is -5dB, that of microphone sensor number 9 is 9dB, and that of microphone sensor number 7 is 10dB. It can be seen that the SNR of the microphone sensors increases with increasing height.

[0132] In S504, an objective function is constructed based on the sound field coverage and average signal-to-noise ratio, and it is determined whether the objective function meets the preset conditions. If not, S505 is executed to adjust the positions of the 10 microphone sensors and return to step S502 until the objective function meets the preset conditions. Then, S506 is executed to obtain the target deployment position.

[0133] In one example, such as Figure 8 As shown, the target placement location corresponding to microphone number 1 is 103 meters, and the target placement location corresponding to microphone sensor number 2 is 91 meters. Similarly, ... Figure 8 The remaining microphone sensors are positioned accordingly. Furthermore, each microphone sensor can be positioned as follows: Figure 9 The installation method shown is deployed inside the tower. For example, Figure 9 As shown, the microphone sensor 902 can be fixed to the target deployment position in the tower 210 using the connector 901. For example, the microphone sensor can be fixed to the tower using cable ties.

[0134] In this embodiment, the installation of the sensor array is guided by a quantitative analysis method, which is highly accurate and can perform quantitative evaluation and corresponding layout optimization, thereby improving the reliability of data acquisition.

[0135] Based on the location determination method for the sound receiving device provided in the above embodiments, this application also provides specific implementation methods for the location determination device for the sound receiving device. Please refer to the following embodiments.

[0136] First see Figure 10 , Figure 10 This is a schematic diagram of the structure of a location determination device for a sound receiving apparatus provided in another embodiment of this application, as shown below. Figure 10 As shown, the location determination device 1000 for a sound receiving device provided in this application embodiment includes the following modules: The first determining module 1001 is used to determine the tower structure parameters of the tower in the wind turbine generator set, and to determine the sound conduction characteristics of the tower based on the tower structure parameters; The second determining module 1002 is used to determine the target sound pressure at each position in the tower under the action of the sound excitation signal, based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics. The calculation module 1003 is used to calculate the target sound field coverage and the target signal-to-noise ratio according to the target sound pressure, sound field coverage calculation formula and signal-to-noise ratio calculation formula corresponding to each location. The third determining module 1004 is used to determine the placement position of the sound receiving device in the tower based on the target sound field coverage and the target signal-to-noise ratio.

[0137] In one embodiment, the second determining module 1002 determines the target sound pressure at each position in the tower under the action of the sound excitation signal, based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics, in the following manner: acquiring the excitation position information of the sound excitation device; for each position in the tower, constructing a sound field control equation describing the propagation law of the sound excitation signal in the tower based on the excitation position information and the position information corresponding to that position; constructing the boundary constraint conditions corresponding to the tower based on the sound conduction characteristics and the tower structural parameters; and for each position in the tower, determining the target sound pressure at each position under the action of the sound excitation signal based on the sound field control equation, the boundary constraint conditions, the sound excitation signal, and the transfer function between the sound excitation device and that position.

[0138] In one embodiment, the second determining module 1002 constructs a sound field control equation describing the propagation law of the sound excitation signal in the tower for each position in the tower, based on the excitation position information and the position information corresponding to that position: for each position in the tower, a first parameter characterizing the propagation law of the sound excitation signal in the tower is determined based on the position information corresponding to that position and the structural characteristics of the tower; and a sound field control equation describing the propagation law of the sound excitation signal in the tower is constructed based on the first parameter, the excitation position information, and the position information corresponding to that position.

[0139] In one embodiment, the wind turbine generator set includes at least a first acoustic excitation device and a second acoustic excitation device deployed in different blades, wherein there is a target time delay between the first acoustic excitation signal emitted by the first acoustic excitation device and the second acoustic excitation signal emitted by the second acoustic excitation device; the second determining module 1002 determines the target sound pressure at each position in the tower under the action of the acoustic excitation signal in the following manner: according to the acoustic field control equation, boundary constraints, and the transfer function between the acoustic excitation device and the position, the first sound pressure at the position under the action of the first acoustic excitation signal and the second sound pressure at the position under the action of the second acoustic excitation signal are determined respectively according to the acoustic field control equation, boundary constraints, the first acoustic excitation signal, the second acoustic excitation signal, and the transfer function between the acoustic excitation device and the position; the first sound pressure and the second sound pressure are accumulated to obtain the target sound pressure corresponding to the position.

[0140] In one embodiment, the calculation module 1003 calculates the target sound field coverage and the target signal-to-noise ratio (SNR) according to the target sound pressure, sound field coverage calculation formula, and signal-to-noise ratio (SNR) calculation formula for each location as follows: A preset number of target locations are determined within the tower; the root mean square (RMS) sound pressure is determined according to the preset RMS calculation formula and the target sound pressure corresponding to each target location; the sound pressure level of the RMS sound pressure corresponding to each target location is determined according to the preset sound pressure quantization formula; the sound pressure levels corresponding to the preset number of target locations are accumulated to obtain the target sound field coverage; for each target location within the tower, the location SNR corresponding to each target location is determined according to the SNR calculation formula and the target sound pressure; the location SNR corresponding to the preset number of target locations is accumulated to obtain the target SNR.

[0141] In one embodiment, the calculation module 1003 determines the position signal-to-noise ratio (SNR) for each target position in the tower according to the SNR calculation formula and the target sound pressure as follows: For each target position in the tower, the power spectral density corresponding to each target position is determined according to the preset power spectral density formula and the target sound pressure; the power spectral density is integrated using the first frequency band interval corresponding to the noise and the second frequency band range corresponding to the sound excitation signal as the integration range, respectively, to obtain the noise power corresponding to the noise and the excitation power corresponding to the sound excitation signal; the position SNR is calculated according to the SNR calculation formula, the noise power, and the excitation power.

[0142] In one embodiment, the calculation module 1003 determines a preset number of target positions from the tower in the following manner, and accumulates the sound pressure levels corresponding to the preset number of target positions to obtain the target sound field coverage: the tower is divided into a preset number of tower segments along the axial direction; the corresponding target positions are determined from each tower segment to obtain the preset number of target positions, and the sound pressure levels corresponding to the preset number of target positions are accumulated to obtain the target sound field coverage.

[0143] In one embodiment, the third determining module 1004 determines the placement position of the sound receiving device in the tower according to the target sound field coverage and the target signal-to-noise ratio in the following manner: constructing a target function based on the target sound field coverage, the target signal-to-noise ratio and their respective weighting coefficients; and taking the position corresponding to the target function as the placement position of the sound receiving device when the target function is greater than or equal to a preset threshold.

[0144] Figure 11 A schematic diagram of the hardware structure of the location determination device of the sound receiving apparatus provided in an embodiment of this application is shown.

[0145] The location determination device for the sound receiving device may include a processor 1101 and a memory 1102 storing computer program instructions.

[0146] Specifically, the processor 1101 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0147] Memory 1102 may include mass storage for data or instructions. For example, and not limitingly, memory 1102 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 1102 may include removable or non-removable (or fixed) media. Where appropriate, memory 1102 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 1102 is non-volatile solid-state memory.

[0148] Memory may include read-only memory (ROM), random access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, and electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods according to one aspect of this disclosure.

[0149] The processor 1101 reads and executes computer program instructions stored in the memory 1102 to implement any of the sound receiving device location determination methods in the above embodiments.

[0150] In one example, the location determination device for the sound receiving device may further include a communication interface 1103 and a bus 1110. Wherein, as Figure 11 As shown, the processor 1101, memory 1102, and communication interface 1103 are connected through bus 1110 and complete communication with each other.

[0151] The communication interface 1103 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0152] Bus 1110 includes hardware, software, or both, that couples components of an online data traffic metering device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 1110 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0153] The location determination device of the sound receiving device can execute the location determination method of the sound receiving device in the embodiments of this application based on the sound excitation signal, thereby achieving a combination Figure 1 and Figure 4 The method for determining the location of the sound receiving device is described.

[0154] Furthermore, in conjunction with the method for determining the location of the sound receiving device in the above embodiments, this application embodiment can provide a computer storage medium for implementation. This computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the methods for determining the location of the sound receiving device in the above embodiments.

[0155] This application also provides a computer program product, including a computer program that, when executed by a processor, implements a method for determining the location of any of the sound receiving devices described in the above embodiments.

[0156] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0157] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0158] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0159] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0160] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A method for determining the location of a sound receiving device, characterized in that, The method, applied to a wind turbine generator set, wherein the wind turbine generator set includes at least one acoustic excitation device deployed in the blade, comprises: Obtain the tower structure parameters of the wind turbine generator set, and determine the sound conduction characteristics of the tower based on the tower structure parameters; For each position in the tower, the target sound pressure at each position under the action of the sound excitation signal is determined based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics. Calculate the target sound field coverage and target signal-to-noise ratio based on the target sound pressure, sound field coverage, and signal-to-noise ratio calculation formulas corresponding to each location. The placement position of the sound receiving device in the tower is determined based on the target sound field coverage and the target signal-to-noise ratio.

2. The method for determining the location of the sound receiving device according to claim 1, characterized in that, The determination of the target sound pressure at each location within the tower, based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics, includes: Obtain the excitation position information of the sound excitation device; For each position in the tower, a sound field control equation is constructed to describe the propagation law of the sound excitation signal in the tower, based on the excitation position information and the position information corresponding to that position. Based on the sound conduction characteristics and the tower structure parameters, the boundary constraints corresponding to the tower are constructed. For each position in the tower, the target sound pressure at each position under the action of the sound excitation signal is determined according to the sound field control equation, the boundary constraints, the sound excitation signal, and the transfer function between the sound excitation device and the position.

3. The method for determining the location of the sound receiving device according to claim 2, characterized in that, For each position within the tower, based on the excitation position information and the corresponding position information, a sound field control equation is constructed to describe the propagation law of the acoustic excitation signal within the tower, including: For each position in the tower, a first parameter characterizing the propagation law of the sound excitation signal in the tower is determined based on the position information corresponding to that position and the structural characteristics of the tower. Based on the first parameter, the excitation position information, and the position information corresponding to that position, a sound field control equation is constructed to describe the propagation law of the sound excitation signal in the tower.

4. The method for determining the location of the sound receiving device according to claim 2, characterized in that, The wind turbine generator set includes at least a first sound excitation device and a second sound excitation device deployed in different blades, wherein there is a target time delay between the first sound excitation signal emitted by the first sound excitation device and the second sound excitation signal emitted by the second sound excitation device. The determination of the target sound pressure at each location within the tower under the action of the sound excitation signal, based on the sound field control equation, the boundary constraints, and the transfer function from the sound excitation device to that location, includes: Based on the sound field control equation, the boundary constraint conditions, the first sound excitation signal, the second sound excitation signal, and the transfer function between the sound excitation device and the position, the first sound pressure at the position under the action of the first sound excitation signal and the second sound pressure under the action of the second sound excitation signal are determined respectively. The first sound pressure and the second sound pressure are summed to obtain the target sound pressure corresponding to the location.

5. The method for determining the location of the sound receiving device according to claim 1, characterized in that, The step of calculating the target sound field coverage and target signal-to-noise ratio based on the target sound pressure, sound field coverage calculation formula, and signal-to-noise ratio calculation formula corresponding to each location includes: A predetermined number of target locations are determined from the tower. The root mean square sound pressure is determined based on the preset root mean square calculation formula and the target sound pressure corresponding to each target location. According to the preset sound pressure quantization formula, the sound pressure level of the root mean square sound pressure corresponding to each target location is determined; The sound pressure levels corresponding to the preset number of target locations are accumulated to obtain the target sound field coverage. For each target location in the tower, the position signal-to-noise ratio corresponding to each target location is determined according to the signal-to-noise ratio calculation formula and the target sound pressure. The target signal-to-noise ratio is obtained by summing the position signal-to-noise ratios corresponding to the preset number of target positions.

6. The method for determining the location of the sound receiving device according to claim 5, characterized in that, The determination of the position signal-to-noise ratio (SNR) for each target location within the tower, based on the SNR calculation formula and the target sound pressure, includes: For each target location in the tower, the power spectral density corresponding to each target location is determined according to a preset power spectral density formula and the target sound pressure. The power spectral density is integrated using the first frequency band range corresponding to the noise and the second frequency band range corresponding to the sound excitation signal as the integration range, respectively, to obtain the noise power corresponding to the noise and the excitation power corresponding to the sound excitation signal. The position signal-to-noise ratio is calculated based on the signal-to-noise ratio calculation formula, the noise power, and the excitation power.

7. The method for determining the location of the sound receiving device according to claim 5, characterized in that, The step of determining a preset number of target locations within the tower and accumulating the sound pressure levels corresponding to the preset number of target locations to obtain the target sound field coverage includes: The tower is divided into the predetermined number of tower segments along the axial direction; The target positions are determined from each of the tower sections to obtain the preset number of target positions, and the sound pressure levels corresponding to the preset number of target positions are accumulated to obtain the target sound field coverage.

8. The method for determining the location of the sound receiving device according to claim 1, characterized in that, Determining the placement position of the sound receiving device in the tower based on the target sound field coverage and the target signal-to-noise ratio includes: Based on the target sound field coverage, the target signal-to-noise ratio, and their respective weighting coefficients, a target function is constructed; If the objective function is determined to be greater than or equal to a preset threshold, the position corresponding to the objective function is taken as the placement position of the sound receiving device.

9. A location determination device for a sound receiving device, characterized in that, Applied to wind turbine generator sets, the wind turbine generator set includes at least one acoustic excitation device deployed in the blades, the device comprising: The first determining module is used to determine the tower structure parameters of the tower in the wind turbine generator set, and to determine the sound conduction characteristics of the tower based on the tower structure parameters; The second determining module is used to determine the target sound pressure at each position in the tower under the action of the sound excitation signal, based on the sound excitation signal emitted by the sound excitation device and the sound conduction characteristics. The calculation module is used to calculate the target sound field coverage and the target signal-to-noise ratio according to the target sound pressure, sound field coverage calculation formula and signal-to-noise ratio calculation formula corresponding to each location; The third determining module is used to determine the placement position of the sound receiving device in the tower based on the target sound field coverage and the target signal-to-noise ratio.

10. A location determination device for a sound receiving apparatus, characterized in that, The device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements the method for determining the location of the sound receiving device as described in any one of claims 1-8.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions, which, when executed by a processor, implement the method for determining the location of a sound receiving device as described in any one of claims 1-8.

12. A computer program product, characterized in that, When the instructions in the computer program product are executed by the processor of the electronic device, the electronic device performs the position determination method of the sound receiving device as described in any one of claims 1-8.

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