Automobile wind vibration noise optimization method, device and equipment and storage medium

Abstract

The invention discloses an automobile wind vibration noise optimization method, device and equipment and a storage medium, relates to the technical field of automobile noise control, and discloses an automobile wind vibration noise optimization method which comprises the steps that a current window opening instruction is responded, and the current automobile speed, the current automobile window opening state and a window opening control parameter table are obtained; determining an initial vehicle window opening degree combination according to the current window opening instruction and the current vehicle window opening state; according to the current vehicle speed, the initial vehicle window opening degree combination, the window opening control parameter table and the current window opening instruction, a target vehicle window opening instruction is determined; and responding to the target car window opening instruction, and controlling a target car window to the target car window opening degree so as to complete car wind vibration noise optimization. According to the scheme, the wind vibration noise of the automobile during window opening driving can be optimized at low cost by adjusting the current window opening instruction.

Description

Technical Field

[0001] The present application relates to the technical field of automobile noise control, and in particular to an automobile wind-induced noise optimization method, device, equipment and storage medium. Background Art

[0002] When a car is driving with the windows open, stimulated by the external airflow, within a specific speed range, the air inside the cabin will produce strong low-frequency pressure pulsations, with significant peak characteristics in the spectrum. At this time, the human ear will feel the pressure on the eardrum caused by this pressure pulsation, which is unbearable in severe cases. This phenomenon is called car wind vibration noise, or car wind vibration for short. The frequency of wind vibration noise is low but the intensity is high. If the human body is in an environment of wind vibration noise for a long time, it is easy to feel tired and unhappy. Therefore, in order to ensure riding comfort, the impact of wind vibration noise must be considered during the car design stage.

[0003] At present, the existing automobile wind vibration noise control scheme adds structural design near the vehicle window to take suppression measures after wind vibration occurs to reduce the impact of the vehicle's wind vibration noise, such as adding guide plates, spoilers, jet airflow, etc. to destroy the formation of window vortexes, thereby controlling wind vibration noise, but it will affect the appearance of the car and increase the aerodynamic resistance of the whole vehicle when driving. At the same time, structural design must be carried out, which increases development costs. Therefore, how to optimize the automobile wind vibration noise when the car is driving with the window open at a low cost has become a problem to be solved.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present application is to provide a method, device, equipment and storage medium for optimizing automobile wind buffeting noise, aiming to solve the technical problem of how to optimize the automobile wind buffeting noise when the automobile is driving with windows open at low cost.

[0006] To achieve the above objectives, the present application proposes a method for optimizing automobile wind buffeting noise, the method comprising:

[0007] In response to the current window opening command, obtain the current vehicle speed, the current window opening state and the window opening control parameter table;

[0008] Determining an initial window opening combination according to the current window opening instruction and the current window opening state;

[0009] Determine a target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction;

[0010] In response to the target window opening instruction, the target window is controlled to a target window opening to optimize the wind buffeting noise of the vehicle.

[0011] In one embodiment, the step of determining the target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction comprises:

[0012] According to the current vehicle speed and the initial vehicle window opening, a window opening control parameter table is searched to obtain a predicted vehicle wind buffeting noise value;

[0013] Determine whether to adjust the current window opening instruction according to the predicted automobile wind buffeting noise value, and obtain a window opening instruction adjustment result;

[0014] A target vehicle window opening instruction is determined according to the window opening instruction adjustment result.

[0015] In one embodiment, the step of determining whether to adjust the current window opening instruction according to the predicted automobile wind buffeting noise value to obtain the window opening instruction adjustment result includes:

[0016] When the predicted wind-vibration noise value is less than or equal to the target wind-vibration noise value, determining that the window opening instruction adjustment result is not to adjust the current window opening instruction;

[0017] When the predicted wind-vibration noise value is greater than the target wind-vibration noise value, determining the window opening instruction adjustment result is to adjust the current window opening instruction.

[0018] In one embodiment, the step of determining a target window opening instruction according to the window opening instruction adjustment result comprises:

[0019] When the window opening instruction adjustment result is to adjust the current window opening instruction, determining a target window opening combination from the window opening control parameter table according to the predicted automobile wind buffeting noise value and the initial window opening combination;

[0020] A target window opening instruction is determined according to the target window opening combination.

[0021] In one embodiment, before the step of responding to the current window opening instruction and obtaining the current vehicle speed, the current window opening state and the window opening control parameter table, the step further includes:

[0022] Collect the time domain data of wind vibration noise of preset car windows;

[0023] Determine a wind buffeting noise relationship diagram of the preset vehicle window according to the wind buffeting noise time domain data;

[0024] A window opening control parameter table of the target vehicle is determined according to the wind-vibration-noise relationship diagram.

[0025] In one embodiment, the step of collecting the wind buffeting noise time domain data of a preset vehicle window includes:

[0026] Controlling a preset window to a preset window opening;

[0027] The time domain data of wind vibration noise corresponding to different vehicle speeds under the preset window opening is collected.

[0028] In one embodiment, the step of determining the wind buffeting noise relationship diagram of a preset vehicle window according to the wind buffeting noise time domain data comprises:

[0029] Performing low-pass filtering on the wind vibration noise time domain data to obtain filtered noise time domain data;

[0030] Performing Fourier transform on the filtered noise time domain data to obtain wind vibration noise frequency domain data;

[0031] Determine wind vibration noise sound pressure level data according to the wind vibration noise frequency domain data;

[0032] A wind-vibration-noise relationship diagram of the preset vehicle window is drawn according to the wind-vibration sound pressure level data.

[0033] In addition, to achieve the above-mentioned purpose, the present application also proposes a vehicle wind-vibration noise optimization device, the vehicle wind-vibration noise optimization device comprising:

[0034] A data processing module, used for determining an initial window opening combination according to the current window opening instruction and the current window opening state;

[0035] An instruction determination module, used for determining a target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction;

[0036] The window control module is used to respond to the target window opening instruction and control the target window to a target window opening to optimize the wind buffeting noise of the vehicle.

[0037] In addition, to achieve the above-mentioned purpose, the present application also proposes a vehicle wind-bounce noise optimization device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the vehicle wind-bounce noise optimization method as described above.

[0038] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the automobile wind vibration noise optimization method as described above are implemented.

[0039] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the automobile wind buffeting noise optimization method as described above are implemented.

[0040] One or more technical solutions proposed in this application have at least the following technical effects:

[0041] In response to the current window opening instruction, the current vehicle speed, the current window opening state and the window opening control parameter table are obtained; the initial window opening combination is determined according to the current window opening instruction and the current window opening state; the target window opening instruction is determined according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction; in response to the target window opening instruction, the target window is controlled to the target window opening to complete the optimization of the wind vibration noise of the car. By adjusting the current window opening instruction, the precise opening of the window is automatically controlled to avoid the generation of car wind vibration noise that affects the user experience when the window is actually opened, thereby improving the comfort inside the car. The solution of the present application can optimize the car wind vibration noise when the car is driving with the window open at a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0044] Figure 1 A flow chart of the first embodiment of the method for optimizing wind-induced noise of a vehicle provided in the present application;

[0045] Figure 2 A schematic diagram of a Helmholtz resonance cavity provided in Example 1 of the automobile wind-induced noise optimization method of the present application;

[0046] Figure 3 A flow chart of the second embodiment of the method for optimizing wind-induced noise of a vehicle provided in the present application;

[0047] Figure 4 A wind-vibration-noise relationship diagram provided for the second embodiment of the automobile wind-vibration-noise optimization method of the present application;

[0048] Figure 5 A flow chart for obtaining data on the sound pressure level of constant wind-vibration noise provided in Embodiment 2 of the automobile wind-vibration noise optimization method of the present application;

[0049] Figure 6 This is a schematic diagram of the module structure of the automobile wind-induced noise optimization device according to an embodiment of the present application;

[0050] Figure 7 Schematic diagram of the equipment structure of the hardware operating environment involved in the automobile wind-induced noise optimization method in the embodiment of the present application.

[0051] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0052] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0053] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0054] The main solutions of the embodiments of this application are:

[0055] In response to the current window opening command, obtain the current vehicle speed, the current window opening state and the window opening control parameter table;

[0056] Determining an initial window opening combination according to the current window opening instruction and the current window opening state;

[0057] Determine a target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction;

[0058] In response to the target window opening instruction, the target window is controlled to a target window opening to optimize the wind buffeting noise of the vehicle.

[0059] In this embodiment, for ease of description, the following description is based on identifying the vehicle end as the execution subject.

[0060] When a car is driving with the windows open, stimulated by the external airflow, within a specific speed range, the air inside the cabin will produce strong low-frequency pressure pulsations, with significant peak characteristics in the spectrum. At this time, the human ear will feel the pressure on the eardrum caused by this pressure pulsation, which is unbearable in severe cases. This phenomenon is called car wind vibration noise, or car wind vibration for short. The frequency of wind vibration noise is low but the intensity is high. If the human body is in an environment of wind vibration noise for a long time, it is easy to feel tired and unhappy. Therefore, in order to ensure riding comfort, the impact of wind vibration noise must be considered during the car design stage.

[0061] At present, the existing automobile wind vibration noise control scheme adds structural design near the vehicle window to take suppression measures after wind vibration occurs to reduce the impact of the vehicle's wind vibration noise, such as adding guide plates, spoilers, jet airflow, etc. to destroy the formation of window vortexes, thereby controlling wind vibration noise, but it will affect the appearance of the car and increase the aerodynamic resistance of the whole vehicle when driving. At the same time, structural design must be carried out, which increases development costs. Therefore, how to optimize the automobile wind vibration noise when the car is driving with the window open at a low cost has become a problem to be solved.

[0062] The present application provides a solution that can optimize the wind buffeting noise of a car when the car is driving with the windows open at a low cost. By adjusting the current window opening command, the precise opening degree of the window can be automatically controlled to avoid the generation of wind buffeting noise that affects the user experience when the window is actually open, thereby improving the comfort level in the car.

[0063] It should be noted that the execution subject of this embodiment may be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a vehicle terminal, etc. The following takes the vehicle terminal as an example to illustrate this embodiment and the following embodiments.

[0064] Based on this, the embodiment of the present application provides a method for optimizing automobile wind vibration noise, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the automobile wind-induced noise optimization method of the present application.

[0065] In this embodiment, the automobile wind buffeting noise optimization method includes steps S10 to S40:

[0066] Step S10, responding to the current window opening instruction, obtaining the current vehicle speed, the current window opening state and the window opening control parameter table;

[0067] It should be noted that wind vibration noise is a kind of cavity noise. When the side windows or sunroof of a car are opened, a cavity is formed in the car. There is an unstable shear layer at the upstream edge (leading edge) of the cavity opening, which causes the vortex to fall off at this position and flow backwards with the airflow. The vortex hits the trailing edge of the opening and breaks, generating a pressure wave that propagates in all directions. The pressure wave that travels in the direction of travel reaches the leading edge of the opening and will trigger the vortex to fall off again. The above process is repeated many times per second and causes the shear layer to produce a specific vibration frequency. When this frequency is the same as the natural frequency of the car, that is, when the vortex shedding period of the incoming flow coincides with the natural frequency of the passenger car sound cavity, wind vibration will occur, causing wind vibration noise. The wind vibration phenomenon is a Helmholtz resonance phenomenon. The cavity inside a car with an open window can be regarded as a Helmholtz resonance cavity. Refer to Figure 2 , Figure 2A schematic diagram of a Helmholtz resonance cavity provided in Example 1 of the automobile wind-induced noise optimization method of the present application. Figure 2 As shown, A represents the window area, and V represents the volume of the sound cavity in the car. Specifically, the natural frequency f of the Helmholtz resonance cavity is predicted by the following formula:

[0068]

[0069] Wherein, c is the speed of sound, A is the window opening area, V is the volume of the acoustic cavity in the car, and L is the height from the window opening position to the interior surface. It can be seen that the resonant frequency of the wind vibration phenomenon depends on the vehicle speed, the shape of the opening, the size of the compartment space, etc. Aerodynamic drag is often negatively correlated with the wind noise when the window is opened. With the continuous optimization of automobile aerodynamic technology, the wind resistance of the car is gradually decreasing, and the shape of the whole vehicle is more streamlined, which leads to less airflow on the surface of the car. When the user opens the window, the wind vibration will be more serious, affecting the user experience. Existing solutions often optimize the wind vibration noise by reducing or eliminating the pressure wave of the window, changing the shape of the window, etc. The solution of the present application can directly adjust the window opening command from the user, and optimize the wind vibration noise of the car by controlling the window opening combination.

[0070] It should be understood that the current window opening instruction is a control instruction for the window by the user, and the current window opening instruction can be received through buttons in the vehicle, touch screens, voice control, etc. The current window opening instruction is used to specify that the corresponding window is adjusted to a certain opening. When the current window opening instruction is received, the current vehicle speed, the current window opening state, and the window opening control parameter table of the vehicle are obtained to adjust the current window opening instruction. Among them, the current window opening state is the current opening and closing state of all windows of the vehicle (including the sunroof and side windows), and the window opening control parameter table is a multi-dimensional query relationship table obtained by summarizing the wind vibration noise data of the whole vehicle obtained from the wind vibration noise test of the whole vehicle, and is pre-stored in the vehicle. By querying the window opening control parameter table, the wind vibration noise value under the specified window opening combination and the specified vehicle speed can be obtained.

[0071] Step S20, determining an initial window opening combination according to the current window opening instruction and the current window opening state;

[0072] It should be understood that the current window opening combination can be determined based on the current window opening state, and the current window opening combination contains the opening data of each window currently opened in the vehicle. The window opening refers to the degree of window opening in the wind vibration measurement, that is, the ratio of the length of the window glass sliding open to the total sliding length of the window glass, expressed as a percentage. The initial window opening combination is a combination of the current window opening state and the window opening required by the current window opening instruction. For example, when the current window opening instruction is received, the current window opening state is the left rear side window fully open, and the current window opening instruction requires the left front side window to be fully open. At this time, the initial window opening combination is: left rear side window fully open + left front side window fully open.

[0073] Step S30, determining a target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction;

[0074] It should be understood that after obtaining the current vehicle speed and the initial window opening combination, the window opening control parameter table can be queried according to the current vehicle speed and the initial window opening combination to obtain the corresponding automobile wind vibration noise value. If the automobile wind vibration noise value is greater than the preset target value, that is, it falls within the wind vibration noise occurrence area in the window opening control parameter table, then the current window opening instruction needs to be adjusted so that the adjusted window opening combination falls outside the wind vibration noise occurrence area in the window opening control parameter table to ensure the user's vehicle comfort. The preset target value is the wind vibration noise value that will affect the user experience. Generally, the wind vibration noise sound pressure level is greater than 100dB, so the preset target value can be 100dB.

[0075] In a feasible implementation, step S30 may include steps S31 to S33:

[0076] Step S31, querying a window opening control parameter table according to the current vehicle speed and the initial window opening combination to obtain a predicted vehicle wind buffeting noise value;

[0077] It should be noted that the window control parameter table is queried according to the current vehicle speed and the initial window opening combination, and the corresponding automobile wind vibration noise value is obtained as the predicted wind vibration noise that is about to occur, that is, the predicted automobile wind vibration noise value. Specifically, the window control parameter table contains multiple window control parameter sub-tables, and each wind vibration noise query table stores the automobile wind vibration noise value corresponding to the window opening data and the vehicle speed under the open window combination. Exemplarily, if the vehicle has 4 side windows and 1 sunroof, the window control parameter table contains the wind vibration noise data of all situations of 1 window combination, 2 window combinations, 3 window combinations, 4 window combinations and 5 window combinations of the vehicle, that is, it contains 31 window control parameter sub-tables.

[0078] It should be understood that when querying the window opening control parameter table, the initial window opening combination can be used to determine which windows of the vehicle will be opened after the current window opening instruction is executed, and the corresponding window opening control parameter sub-table is found according to the window opening combination. The opening data of each window under the opening window combination (such as 50% for the left rear side window and 40% for the left front side window) is obtained according to the initial window opening combination, and the wind vibration noise value of the vehicle corresponding to the opening data and the current vehicle speed is queried to obtain the predicted wind vibration noise value of the vehicle.

[0079] Step S32, determining whether to adjust the current window opening instruction according to the predicted automobile wind buffeting noise value, and obtaining a window opening instruction adjustment result;

[0080] It should be understood that after the predicted automobile wind buffeting noise value is obtained, the automobile wind buffeting noise value will be compared with the preset target value to determine whether the current window opening instruction needs to be adjusted to obtain the window opening instruction adjustment result.

[0081] In a feasible implementation, step S32 may include: when the predicted wind vibration noise value is less than or equal to the target wind vibration noise value, determining that the window opening instruction adjustment result is not to adjust the current window opening instruction; when the predicted wind vibration noise value is greater than the target wind vibration noise value, determining that the window opening instruction adjustment result is to adjust the current window opening instruction.

[0082] It should be understood that the target wind vibration noise value is a preset target value, which represents the maximum allowable value of wind vibration noise. If the predicted wind vibration noise value is lower than or equal to the set target noise value, it means that the wind vibration noise generated under the initial window opening combination obtained after executing the current window opening instruction does not affect the user's comfort, and there is no need to adjust the current window opening instruction. If the predicted wind vibration noise value exceeds the target noise value, it means that the wind vibration noise generated under the initial window opening combination obtained after executing the current window opening instruction is too large to meet the user's comfort needs. At this time, the current window opening instruction needs to be adjusted to reduce the wind vibration noise and ensure that the predicted wind vibration noise value is lower than or equal to the target wind vibration noise value.

[0083] Step S33, determining a target window opening instruction according to the window opening instruction adjustment result.

[0084] It should be understood that if the window opening instruction adjustment result does not adjust the current window opening instruction, the current window opening instruction is determined to be the target window opening instruction. If the window opening instruction adjustment result adjusts the current window opening instruction, the current window opening instruction needs to be adjusted so that the predicted wind vibration noise value under the window opening combination obtained according to the adjusted window opening instruction, that is, the target window opening instruction, is lower than or equal to the target wind vibration noise value.

[0085] In a feasible implementation, step S33 may include: when the window opening instruction adjustment result is to adjust the current window opening instruction, determining a target window opening combination from the window opening control parameter table according to the predicted automobile wind vibration noise value and the initial window opening combination; determining a target window opening instruction according to the target window opening combination.

[0086] It should be understood that the target window opening degree combination corresponding to the target window opening instruction is the window opening degree combination that falls outside the wind vibration noise occurrence area in the window opening control parameter table and has the smallest difference from the window opening degree required by the current window opening instruction. In the window opening control parameter table, the window opening degree combination that falls within the wind vibration noise occurrence area in the window opening control parameter table, that is, the predicted wind vibration noise value is greater than the target wind vibration noise value, can be marked. When the window opening instruction adjustment result is to adjust the current window opening instruction, the window opening degree combination that falls outside the wind vibration noise occurrence area in the window opening control parameter table and is closest to the initial window opening degree combination is queried according to the window opening control parameter table to obtain the corrected predicted window opening degree combination, that is, the target window opening degree combination. According to the target window opening degree combination, the adjustment result of the current window opening instruction, that is, the target window opening instruction, can be obtained.

[0087] Step S40, responding to the target window opening instruction, controlling the target window to a target window opening to optimize the wind buffeting noise of the vehicle.

[0088] It should be understood that, according to the target window opening instruction, the window opening combination obtained after controlling the target window to the target window opening can meet the user's comfort needs and achieve the optimization of the car wind buffeting noise.

[0089] This embodiment provides a method for optimizing automobile wind vibration noise, which responds to the current window opening instruction, obtains the current vehicle speed, the current window opening state and the window opening control parameter table; determines the initial window opening combination according to the current window opening instruction and the current window opening state; determines the target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction; responds to the target window opening instruction, controls the target window to the target window opening, so as to complete the optimization of automobile wind vibration noise. By adjusting the current window opening instruction, the precise window opening is automatically controlled to avoid automobile wind vibration noise that affects the user experience when the window is actually opened, thereby improving the comfort in the car, and optimizing the automobile wind vibration noise when the car is driving with the window open at a low cost.

[0090] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 3 Before step S10, the automobile wind vibration noise optimization method further includes steps S01 to S03:

[0091] Step S01, collecting wind vibration noise time domain data of a preset vehicle window;

[0092] It should be understood that in order to obtain the window opening control parameter table of the target vehicle, it is necessary to collect the automobile wind vibration noise data under the corresponding working conditions through the whole vehicle wind vibration noise test. The original automobile wind vibration noise data collected through the whole vehicle wind vibration noise test is the wind vibration noise time domain data recorded in the form of a time series. The preset window can be a single window or a combination of multiple windows. During the test, it is necessary to collect automobile wind vibration noise data under all working conditions, that is, under each combination of open windows.

[0093] Specifically, in the whole vehicle wind vibration noise test, the wind vibration noise time domain data can be obtained through the automobile wind vibration noise test system. The process of building the automobile wind vibration noise test system is: arrange the microphone at the position of the human ear of the occupant in the car. For passenger cars, the wind vibration noise in the rear row is greater. Therefore, the outer ear on the right side of the rear row can be used as the wind vibration noise measurement point in the car. The microphone is connected to the vibration noise data acquisition front end through a cable, and the automobile CAN bus OBD diagnostic port is connected to the vibration noise data acquisition front end and the host computer through a one-to-two OBD adapter cable. The vibration noise data acquisition front end is connected to the computer to form a car wind vibration noise test system. The system can adjust the window opening control parameters while collecting the car wind vibration noise data, window opening and vehicle speed signals.

[0094] In a feasible implementation, step S01 may include: controlling a preset vehicle window to a preset vehicle window opening; and collecting time domain data of wind vibration noise corresponding to different vehicle speeds at the preset vehicle window opening.

[0095] It should be understood that when conducting a car wind buffeting noise test, the window opening of the preset window will first be controlled at the preset window opening to obtain the corresponding window opening combination, that is, the wind buffeting noise time domain data corresponding to different vehicle speeds under the preset window opening.

[0096] Specifically, during the automobile wind vibration noise test, you can open a single window to a certain opening in turn, and slowly increase the vehicle speed from 40km / h to 144km / h or the maximum driving speed of the vehicle at an average acceleration of no more than 2.0km / h / s. At the same time, collect data, measure the noise and speed inside the vehicle, and stop collecting and save data after the vehicle speed reaches the maximum measured speed. This method can complete the wind vibration noise test of all windows with different openings and window opening combinations, and each window opening combination is a test condition.

[0097] Step S02, determining a wind vibration noise relationship diagram of the preset vehicle window according to the wind vibration noise time domain data;

[0098] It should be understood that for each test condition, that is, the wind vibration noise time domain data obtained by the preset window, data processing can be performed to obtain the wind vibration sound pressure level data under the test condition, and the wind vibration noise relationship diagram of the preset window can be drawn according to the wind vibration sound pressure level data. The wind vibration noise relationship diagram is the window opening control parameter subtable, and the automobile wind vibration noise value corresponding to the opening degree and vehicle speed under the opening window combination can be queried.

[0099] Reference Figure 4 , Figure 4 A wind-vibration-noise relationship diagram provided for Example 2 of the automobile wind-vibration-noise optimization method of the present application. Figure 4 A schematic diagram of the relationship between the wind vibration noise sound pressure level (unit: dB) and the vehicle speed (unit: kmph, i.e. km / h) and the right rear window opening (unit: %) is given. It can be seen from the figure that the wind vibration noise sound pressure level changes with the vehicle speed and the window opening. When the right rear window is fully opened, it reaches the maximum value at about 120 km / h. For a fixed window opening, as the vehicle speed increases, the car wind vibration noise value first increases, reaches the maximum value, and then decreases. The larger the fixed window opening, the greater the speed corresponding to the maximum car wind vibration noise value. For a fixed speed, as the window opening increases, the car wind vibration noise value also increases accordingly, especially in the lower window opening range such as 0-50%. The color coding in the figure represents different wind noise levels, from green (low wind noise) to red (high wind noise).

[0100] In a feasible implementation, step S02 may include: performing low-pass filtering on the wind vibration noise time domain data to obtain filtered noise time domain data; performing Fourier transform on the filtered noise time domain data to obtain wind vibration noise frequency domain data; determining wind vibration noise sound pressure level data based on the wind vibration noise frequency domain data; and drawing a wind vibration noise relationship diagram of the preset vehicle window based on the wind vibration sound pressure level data.

[0101] It should be noted that, refer to Figure 5 , Figure 5A flow chart for obtaining fixed wind vibration noise sound pressure level data provided for Example 2 of the automobile wind vibration noise optimization method of this application. After obtaining the wind vibration noise time domain data through the whole vehicle wind vibration noise test, the wind vibration noise time domain data will be low-pass filtered and Fourier transformed in succession, and then the wind vibration noise sound pressure level data will be calculated. Specifically, after obtaining the main driver noise time domain data in the car, that is, the wind vibration noise time domain data, the automobile wind vibration noise data of each test condition will be low-pass filtered to obtain filtered noise time domain data. The cutoff frequency can be 100Hz to remove the frequency components higher than 100Hz in the wind vibration noise time domain data, retain the signal of the low-frequency part, and obtain the filtered noise time domain data. The filtered noise time domain data is subjected to fast Fourier transform, and the time domain data is intercepted for 5s with reference to the vehicle speed. The frequency resolution is set to 1.0Hz, and the filtered noise time domain data is subjected to fast Fourier transform (FFT) through 5-100Hz bandpass filtering to convert the time domain data to the frequency domain and obtain the linear autopower spectrum, i.e. the wind vibration noise frequency domain data. From the power spectrum obtained by FFT transformation, the frequency component with the largest sound pressure level, i.e. the maximum sound pressure level, can be found. According to the amplitude of the frequency domain signal, the corresponding sound pressure level can be calculated to obtain the wind vibration noise sound pressure level data.

[0102] Step S03, determining a window opening control parameter table of the target vehicle according to the wind vibration noise relationship diagram.

[0103] It should be understood that by summarizing the automobile wind vibration noise data under each test condition, that is, the wind vibration noise relationship diagram, the automobile wind noise data under each window opening combination of the target vehicle can be obtained, and the window opening control parameter table can be obtained. The window opening control parameter table will be stored in the local end of the target vehicle. When the user's window opening instruction is received, the predicted window opening combination will be determined according to the window opening instruction, and the relationship table will be queried to obtain the predicted automobile wind vibration noise value, and then determine whether the window opening instruction needs to be adjusted, and the predicted window opening combination will be corrected to optimize the automobile wind vibration noise.

[0104] The present embodiment provides a method for optimizing automobile wind-vibration noise, which collects wind-vibration noise time-domain data of preset windows; determines a wind-vibration noise relationship diagram of the preset windows according to the wind-vibration noise time-domain data; determines a window opening control parameter table of a target vehicle according to the wind-vibration noise relationship diagram, and obtains wind-vibration noise time-domain data under all test conditions (i.e., a single window combination corresponding to all preset windows), draws a wind-vibration noise relationship diagram under each test condition, and then summarizes the window opening control parameter table of the target vehicle. According to the window opening control parameter table, zero-cost optimization of automobile wind-vibration noise when the automobile is driving with the windows open can be achieved, thereby meeting the user's comfort requirements.

[0105] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the automobile wind-induced noise optimization method of the present application. More simple transformations based on this technical concept are all within the protection scope of the present application.

[0106] This application also provides a vehicle wind vibration noise optimization device, please refer to Figure 6 , the automobile wind vibration noise optimization device comprises:

[0107] The data acquisition module 10 is used to respond to the current window opening instruction and obtain the current vehicle speed, the current window opening state and the window opening control parameter table;

[0108] A data processing module 20, configured to determine an initial window opening combination according to the current window opening instruction and the current window opening state;

[0109] An instruction determination module 30, configured to determine a target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction;

[0110] The window control module 40 is used to respond to the target window opening instruction and control the target window to a target window opening to optimize the wind buffeting noise of the vehicle.

[0111] In one embodiment, the instruction determination module 30 is also used to query the window opening control parameter table according to the current vehicle speed and the initial window opening combination to obtain a predicted vehicle wind vibration noise value; determine whether to adjust the current window opening instruction according to the predicted vehicle wind vibration noise value to obtain a window opening instruction adjustment result; and determine the target window opening instruction according to the window opening instruction adjustment result.

[0112] In one embodiment, the instruction determination module 30 is also used to determine that the window opening instruction adjustment result is not to adjust the current window opening instruction when the predicted wind vibration noise value is less than or equal to the target wind vibration noise value; and to determine that the window opening instruction adjustment result is to adjust the current window opening instruction when the predicted wind vibration noise value is greater than the target wind vibration noise value.

[0113] In one embodiment, the instruction determination module 30 is also used to determine a target window opening combination from the window opening control parameter table according to the predicted automobile wind vibration noise value and the initial window opening combination when the window opening instruction adjustment result is to adjust the current window opening instruction; and determine the target window opening instruction according to the target window opening combination.

[0114] In one embodiment, the data acquisition module 10 is also used to collect time domain data of wind vibration noise of a preset vehicle window; determine a wind vibration noise relationship diagram of the preset vehicle window based on the wind vibration noise time domain data; and determine a window opening control parameter table of the target vehicle based on the wind vibration noise relationship diagram.

[0115] In one embodiment, the data acquisition module 10 is further used to control a preset vehicle window to a preset vehicle window opening; and collect time domain data of wind vibration noise corresponding to different vehicle speeds at the preset vehicle window opening.

[0116] In one embodiment, the data acquisition module 10 is also used to perform low-pass filtering on the wind vibration noise time domain data to obtain filtered noise time domain data; perform Fourier transform on the filtered noise time domain data to obtain wind vibration noise frequency domain data; determine wind vibration noise sound pressure level data based on the wind vibration noise frequency domain data; and draw a wind vibration noise relationship diagram of the preset vehicle window based on the wind vibration sound pressure level data.

[0117] The automobile wind vibration noise optimization device provided by the present application adopts the automobile wind vibration noise optimization method in the above embodiment, which can solve the technical problem of how to optimize the automobile wind vibration noise when the automobile is driving with the windows open at a low cost. Compared with the prior art, the beneficial effects of the automobile wind vibration noise optimization device provided by the present application are the same as the beneficial effects of the automobile wind vibration noise optimization method provided by the above embodiment, and the other technical features of the automobile wind vibration noise optimization device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0118] The present application provides a vehicle wind-bounce noise optimization device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the vehicle wind-bounce noise optimization method in the above-mentioned embodiment 1.

[0119] Reference below Figure 7 , which shows a schematic diagram of the structure of a vehicle wind vibration noise optimization device suitable for implementing the embodiment of the present application. The vehicle wind vibration noise optimization device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 7The automobile wind-bounce noise optimization device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0120] like Figure 7 As shown, the automobile wind vibration noise optimization device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. Various programs and data required for the operation of the automobile wind vibration noise optimization device are also stored in the RAM 1004. The processing device 1001, the ROM 1002 and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the automobile wind vibration noise optimization device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows an automobile wind vibration noise optimization device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have instead.

[0121] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0122] The automobile wind vibration noise optimization device provided by the present application adopts the automobile wind vibration noise optimization method in the above embodiment, which can solve the technical problem of how to optimize the automobile wind vibration noise when the automobile is driving with the windows open at a low cost. Compared with the prior art, the beneficial effects of the automobile wind vibration noise optimization device provided by the present application are the same as the beneficial effects of the automobile wind vibration noise optimization method provided by the above embodiment, and the other technical features of the automobile wind vibration noise optimization device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0123] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0124] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0125] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the automobile wind-bounce noise optimization method in the above-mentioned embodiment.

[0126] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0127] The computer-readable storage medium may be included in the automobile wind-bounce noise optimization device; or may exist independently without being assembled into the automobile wind-bounce noise optimization device.

[0128] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the automobile wind-bounce noise optimization device, the automobile wind-bounce noise optimization device: responds to the current window opening instruction, obtains the current vehicle speed, the current window opening state and the window opening control parameter table; determines the initial window opening combination according to the current window opening instruction and the current window opening state; determines the target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction; responds to the target window opening instruction, controls the target window to the target window opening, so as to complete the optimization of automobile wind-bounce noise.

[0129] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0130] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0131] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0132] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned automobile wind buffeting noise optimization method, and can solve the technical problem of how to optimize the automobile wind buffeting noise when the automobile is driving with the windows open at a low cost. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the automobile wind buffeting noise optimization method provided by the above-mentioned embodiment, and will not be repeated here.

[0133] The present application also provides a computer program product, including a computer program, which implements the steps of the above-mentioned automobile wind buffeting noise optimization method when executed by a processor.

[0134] The computer program product provided by the present application can solve the technical problem of how to optimize the wind buffeting noise of a car when the car is driving with the windows open at a low cost. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the car wind buffeting noise optimization method provided by the above embodiment, and will not be described in detail here.

[0135] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for optimizing automobile wind-induced noise, characterized in that: The automobile wind buffeting noise optimization method comprises: In response to the current window opening command, obtain the current vehicle speed, the current window opening state and the window opening control parameter table; Determining an initial window opening combination according to the current window opening instruction and the current window opening state; Determine a target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction; In response to the target window opening instruction, the target window is controlled to a target window opening to optimize the wind buffeting noise of the vehicle.

2. The method according to claim 1, characterized in that The step of determining the target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction comprises: According to the current vehicle speed and the initial vehicle window opening, a window opening control parameter table is searched to obtain a predicted vehicle wind buffeting noise value; Determine whether to adjust the current window opening instruction according to the predicted automobile wind buffeting noise value, and obtain a window opening instruction adjustment result; A target vehicle window opening instruction is determined according to the window opening instruction adjustment result.

3. The method according to claim 2, characterized in that The step of determining whether to adjust the current window opening instruction according to the predicted automobile wind buffeting noise value to obtain the window opening instruction adjustment result comprises: When the predicted wind-vibration noise value is less than or equal to the target wind-vibration noise value, determining that the window opening instruction adjustment result is not to adjust the current window opening instruction; When the predicted wind-vibration noise value is greater than the target wind-vibration noise value, determining the window opening instruction adjustment result is to adjust the current window opening instruction.

4. The method according to claim 2, characterized in that The step of determining a target window opening instruction according to the window opening instruction adjustment result comprises: When the window opening instruction adjustment result is to adjust the current window opening instruction, determining a target window opening combination from the window opening control parameter table according to the predicted automobile wind buffeting noise value and the initial window opening combination; A target window opening instruction is determined according to the target window opening combination.

5. The method according to claim 1, characterized in that Before the step of responding to the current window opening instruction and obtaining the current vehicle speed, the current window opening state and the window opening control parameter table, the method further includes: Collect the time domain data of wind vibration noise of preset car windows; Determine a wind buffeting noise relationship diagram of the preset vehicle window according to the wind buffeting noise time domain data; A window opening control parameter table of the target vehicle is determined according to the wind-vibration-noise relationship diagram.

6. The method according to claim 5, characterized in that The step of collecting the wind vibration noise time domain data of the preset vehicle window includes: Controlling a preset window to a preset window opening; The time domain data of wind vibration noise corresponding to different vehicle speeds under the preset window opening is collected.

7. The method according to claim 5, characterized in that The step of determining a wind buffeting noise relationship diagram of a preset vehicle window according to the wind buffeting noise time domain data comprises: Performing low-pass filtering on the wind vibration noise time domain data to obtain filtered noise time domain data; Performing Fourier transform on the filtered noise time domain data to obtain wind vibration noise frequency domain data; Determine wind vibration noise sound pressure level data according to the wind vibration noise frequency domain data; A wind-vibration-noise relationship diagram of the preset vehicle window is drawn according to the wind-vibration sound pressure level data.

8. A vehicle wind noise optimization device, characterized in that: The device comprises: A data acquisition module, used to respond to the current window opening instruction, obtain the current vehicle speed, the current window opening state and the window opening control parameter table; A data processing module, used for determining an initial window opening combination according to the current window opening instruction and the current window opening state; An instruction determination module, used for determining a target window opening instruction according to the current vehicle speed, the initial window opening combination, the window opening control parameter table and the current window opening instruction; The window control module is used to respond to the target window opening instruction and control the target window to a target window opening to optimize the wind buffeting noise of the vehicle.

9. A vehicle wind noise optimization device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the automobile wind buffeting noise optimization method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the automobile wind-bounce noise optimization method according to any one of claims 1 to 7 are implemented.

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