Vehicle and vehicle noise reduction method and system
By collecting and processing the reflected information of driving noise sound waves in the vehicle, and outputting reverse sound waves to superimpose noise reduction waves, the problem of increasing noise inside the vehicle is solved, and the vehicle's noise reduction effect and ride comfort are improved.
Patent Information
- Application Number
- CN202311550327.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-18
- Publication Date
- 2025-05-20
AI Technical Summary
During the vehicle's driving process, the noise reflected by the target occlusion will penetrate the window or be transmitted to the inside of the vehicle from the door gap, resulting in an increase in noise inside the vehicle and it is difficult for existing sound insulation materials to effectively reduce noise.
By obtaining the vehicle's driving environment information, it is determined whether there is a target block. If it exists, the reflected driving noise sound wave is collected and the reverse sound wave of the noise sound wave is output inside the vehicle to superimpose noise reduction waves and reduce noise transmission.
Effectively reduce the noise and sound waves reflected by the target blocking object to the vehicle during driving, and improve the vehicle's comfort level.
Smart Images
Figure CN120020001A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle noise reduction, and particularly to a vehicle, a vehicle noise reduction method and a system. Background Art
[0002] Vehicles mainly use sound insulation materials with characteristics such as vibration isolation, sound insulation, noise elimination, and sound absorption for noise reduction. Its basic principle is to use the mutual mechanical action between sound waves and materials to convert sound energy into other forms of energy to reduce noise.
[0003] However, when a vehicle is driving, it will generate a great deal of wind shear noise and road surface noise outside the vehicle. When the driving noise is reflected, the noise will penetrate through the vehicle window or be transmitted into the vehicle interior through the door gap, resulting in an increase in the interior noise of the vehicle. Using the above-mentioned sound insulation materials for noise reduction cannot achieve excellent noise reduction effects. Summary of the Invention
[0004] In view of the above, embodiments of this application provide a vehicle, a vehicle noise reduction method and a system, aiming to improve the noise reduction effect inside the vehicle.
[0005] An embodiment of this application provides a vehicle noise reduction method, including:
[0006] Obtain the driving environment information of the vehicle to be subjected to noise reduction;
[0007] Based on the driving environment information, determine whether there is a target obstacle on at least one side of the driving road of the vehicle;
[0008] If there is a target obstacle on at least one side of the driving road of the vehicle, collect the first noise sound wave, where the first noise sound wave is the driving noise reflected by the target obstacle;
[0009] Based on the first noise sound wave, determine the first noise reduction sound wave, where the first noise reduction sound wave is the reverse sound wave of the first noise sound wave;
[0010] Emit the first noise reduction sound wave into the vehicle interior.
[0011] When the vehicle in the embodiment of this application is driving beside a target obstacle, it can collect the driving noise reflected by the target obstacle (i.e., the first noise sound wave), and output the reverse sound wave of the first noise sound wave inside the vehicle, so that the first noise reduction sound wave transmitted into the vehicle interior can be superimposed with the reverse sound wave, thereby reducing the noise sound wave reflected by the target obstacle into the vehicle interior during the driving process of the vehicle and improving the comfort level of vehicle riding.
[0012] In some embodiments, after emitting the first noise reduction sound wave into the vehicle interior, it further includes:
[0013] Collect the second noise sound wave inside the vehicle;
[0014] Determine the second noise reduction sound wave based on the second noise sound wave;
[0015] Emit the second noise reduction sound wave into the vehicle interior.
[0016] In some embodiments, the collecting the first noise sound wave includes:
[0017] Detect whether the vehicle currently meets the preset noise reduction mode activation condition;
[0018] If the vehicle meets the noise reduction mode activation condition, collect the first noise sound wave.
[0019] In some embodiments, the noise reduction mode activation condition includes:
[0020] The distance between the target obstacle and the vehicle is within a preset distance range, and / or the current driving speed of the vehicle exceeds a preset driving speed.
[0021] In some embodiments, the driving environment information includes image data, and the image data shows the driving environment of the vehicle;
[0022] The determining whether there is a target obstacle on at least one side of the driving road of the vehicle based on the driving environment information includes:
[0023] Based on the image data, determine whether there is a target obstacle on at least one side of the driving road of the vehicle.
[0024] An embodiment of the present application further provides a vehicle noise reduction system, which is applied to a vehicle and includes:
[0025] An environment monitoring device, which is configured on the vehicle, and is used to obtain the driving environment information of the vehicle and determine whether there is a target obstacle on at least one side of the driving road of the vehicle based on the driving environment information;
[0026] A first sound collecting device, which is configured outside the vehicle and is communicatively connected to the environment monitoring device. The first sound collecting device is used to collect a first noise sound wave when there is a target obstacle on at least one side of the driving road of the vehicle, and the first noise sound wave is the driving noise reflected by the target obstacle;
[0027] A sound emitting device, which is configured inside the vehicle and is communicatively connected to the first sound collecting device. The sound emitting device is used to determine a first noise reduction sound wave based on the first noise sound wave, where the first noise reduction sound wave is the reverse sound wave of the first noise sound wave;
[0028] Emit the first noise reduction sound wave into the vehicle interior.
[0029] In some embodiments, the vehicle noise reduction system further includes:
[0030] A second sound collection device, which is disposed inside the vehicle and communicatively connected to the sound generating device. The second sound collection device is configured to collect a second noise sound wave inside the vehicle after the sound generating device emits the first noise reduction sound wave into the vehicle interior;
[0031] The sound generating device is further configured to determine a second noise reduction sound wave based on the second noise sound wave; and emit the second noise reduction sound wave into the vehicle interior.
[0032] In some embodiments, the driving environment information includes image data, and the driving environment of the vehicle is shown in the image data;
[0033] The environment monitoring device includes a camera, which is disposed on the outer side of the vehicle. The camera is configured to capture the driving environment of the vehicle to obtain the image data; the environment monitoring device is configured to determine whether there is a target obstacle on at least one side of the driving road of the vehicle based on the image data.
[0034] In some embodiments, the sound generating device includes at least one speaker, which is disposed in the cockpit of the vehicle. The speaker on the side of the sound generating device close to the target obstacle is configured to emit the first noise reduction sound wave into the vehicle interior.
[0035] An embodiment of the present application further provides a vehicle, including the above-mentioned vehicle noise reduction system. Description of the Drawings
[0036] Figure 1 is a schematic structural diagram of a vehicle noise reduction system according to an embodiment of the present application.
[0037] Figure 2 is a schematic structural diagram of a vehicle according to an embodiment of the present application.
[0038] Figure 3 is a schematic diagram of a scenario where a target obstacle reflects driving noise according to an embodiment of the present application.
[0039] Figure 4 is a schematic diagram of a scenario for noise reduction optimization according to an embodiment of the present application.
[0040] Figure 5 is a flowchart of the steps of a vehicle noise reduction method according to an embodiment of the present application.
[0041] Figure 6 It is a flowchart of the steps of a vehicle noise reduction method provided according to another embodiment of the present application.
[0042] Description of Main Element Symbols
[0043] Vehicle noise reduction system 10
[0044] Environmental monitoring device 11
[0045] Camera 111
[0046] First sound receiving device 12
[0047] First microphone 121
[0048] Sound generating device 13
[0049] Loudspeaker 131
[0050] Second sound receiving device 14
[0051] Second microphone 141
[0052] Vehicle 20
[0053] Target obstacle 30 Detailed implementation manners
[0054] In order to be able to more clearly understand the above objects, features and advantages of the present application, the present application will be described in detail below with reference to the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the implementation manners of the present application and the features in the implementation manners can be combined with each other.
[0055] Many specific details are set forth in the following description in order to fully understand the present application. The described implementation manners are only a part of the implementation manners of the present application, rather than all of the implementation manners.
[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific implementation manners and are not intended to limit this application.
[0057] Furthermore, it should be noted that in this text, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.
[0058] In this application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims, and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.
[0059] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.
[0060] When a vehicle is in motion, it will generate significant wind shear noise and road surface noise, etc. outside the vehicle. When the driving noise is reflected, the noise will penetrate the vehicle window or be transmitted into the vehicle interior through the door gap.
[0061] For example, when the vehicle is close to obstacles such as guardrails and fences during driving, the guardrails and fences will reflect the driving noise, and the reflected driving noise is easily transmitted into the vehicle interior, resulting in an increase in the noise inside the vehicle.
[0062] In view of the above, the embodiments of this application provide a vehicle, a vehicle noise reduction system, and a vehicle method to reduce the noise reflected by obstacles into the vehicle interior and improve the comfort level of vehicle occupants.
[0063] First, refer to Figure 1 as shown in Figure 1 which is a schematic structural diagram of a vehicle noise reduction system 10 provided by an embodiment of this application. The vehicle noise reduction system 10 can be applied to Figure 2 the vehicle 20 shown in
[0064] The vehicle noise reduction system 10 may include: an environment monitoring device 11, a first sound receiving device 12, and a sound generating device 13.
[0065] For ease of explanation, in the schematic structural diagrams of the vehicle noise reduction system 10 and the vehicle 20, only the parts related to the embodiments of this application are shown. Those skilled in the art can understand that the illustrated structure does not constitute a limitation on the vehicle noise reduction system 10. The vehicle noise reduction system 10 and the vehicle 20 may include more or fewer components (such as computer devices like controllers) than those shown, or combine certain components, or have different component arrangements.
[0066] The environment monitoring device 11 is disposed on the vehicle 20, and is used to obtain the driving environment information of the vehicle 20, and based on the driving environment information, determine whether there is a target obstruction on at least one side of the driving road of the vehicle 20.
[0067] The driving environment information can reflect whether there is a target obstruction on the side of the road where the vehicle 20 is traveling. For example, the driving environment information may include image data, and the image data at least displays the side image of the road where the vehicle 20 is traveling.
[0068] References Figure 3 As shown in , the target obstruction 30 can be a roadside fence, guardrail, wall, tunnel sidewall or other obstruction that can reflect driving noise.
[0069] In some embodiments, such as Figure 2 and Figure 3 As shown in FIG. 1 , the environment monitoring device 11 may include a camera 111 , which is disposed on the outer side of the vehicle 20 , and is used to photograph the driving environment of the vehicle 20 to obtain image data.
[0070] The environmental monitoring device 11 may also include an image recognition module. The camera 111 may transmit the captured image data to the image recognition module.
[0071] In some embodiments, the image recognition module may be a programmable software instruction stored in a memory and can be called and executed by a processor. It is understood that in other embodiments, the image recognition module may also be a program instruction or firmware fixed in the processor.
[0072] The image recognition module can be used to determine whether there is a target obstruction 30 on at least one side of the driving road of the vehicle 20 based on the image data.
[0073] For example, the image recognition module may input the image data into a pre-trained image classification model to obtain the category of the image data, where the category of the image data is that the target occluder 30 exists on at least one side of the driving road of the vehicle 20 shown in the image data, or that the target occluder 30 does not exist on at least one side of the driving road of the vehicle 20 shown in the image data.
[0074] For another example, the image recognition module may input the image data into a pre-trained target detection model, and the target detection model is used to detect the target occluder 30 based on the image data.
[0075] The above method of detecting the target obstruction 30 in the image data is only an example, and can be set according to the actual application process, and the embodiment of the present application is not limited to this.
[0076] In some embodiments, when the environmental monitoring device 11 detects that there is a target obstacle 30 on at least one side of the driving road of the vehicle 20, the detection result can be transmitted to the first sound collection device 12, so that the first sound collection device 12 starts to collect the driving noise (i.e., the first noise sound wave) reflected by the target obstacle 30 in response to the detection result.
[0077] The first sound collection device 12 is disposed outside the vehicle 20 and is communicatively connected to the environmental monitoring device 11. The first sound collection device 12 is used to collect the first noise sound wave when there is a target obstacle 30 on at least one side of the driving road of the vehicle 20.
[0078] In some embodiments, referring Figure 2 and Figure 3 As shown, the first sound collection device 12 may include a first microphone 121 disposed outside the vehicle 20. The first microphone 121 is installed on the side of the vehicle 20, so as to collect the driving noise reflected by the target obstacle 30 located on the side of the driving road.
[0079] The first sound collection device 12 of the embodiment of the present application starts to collect the noise sound wave only when there is a target obstacle 30 on at least one side of the driving road of the vehicle 20, so as to perform noise reduction, which can reduce the noise reduction energy consumption of the vehicle 20 on the basis of ensuring the noise reduction effect of the vehicle 20.
[0080] In other embodiments, when the environmental monitoring device 11 detects that there is a target obstacle 30 on at least one side of the driving road of the vehicle 20, it can also detect whether the vehicle 20 currently meets the preset noise reduction mode activation condition; if the vehicle 20 meets the noise reduction mode activation condition, it means that the first noise sound wave may be relatively large, and the environmental monitoring device 11 can instruct the first sound collection device 12 to start collecting the first noise sound wave, so that the vehicle noise reduction system 10 can perform noise reduction on the first noise sound wave.
[0081] The vehicle noise reduction system 10 of the embodiment of the present application starts to collect the first noise sound wave after the vehicle 20 meets the preset noise reduction mode activation condition, so as to perform noise reduction on the first noise sound wave, thereby further reducing the energy consumption of the vehicle 20 while ensuring the riding experience of passengers.
[0082] In some embodiments, the noise reduction mode activation condition may include: the distance between the target obstacle 30 and the vehicle 20 is within a preset distance range.
[0083] The preset distance range can be set according to actual application requirements, and the embodiment of the present application does not limit this. The distance between the target obstacle 30 and the vehicle 20 can be calculated based on image data or determined based on other methods, and the embodiment of the present application does not limit this.
[0084] The greater the distance between the target obstacle 30 and the vehicle 20, the smaller the driving noise reflected by the target obstacle 30; the smaller the distance between the target obstacle 30 and the vehicle 20, the greater the driving noise reflected by the target obstacle 30. In the embodiment of the present application, when the distance between the target obstacle 30 and the vehicle 20 is within the preset distance range, noise reduction is performed on the first noise sound wave, which can save the energy consumption caused by noise reduction while ensuring the noise reduction effect of the vehicle 20.
[0085] In some other embodiments, the condition for enabling the noise reduction mode includes: the current driving speed of the vehicle 20 exceeds the preset driving speed.
[0086] The greater the driving speed, the greater the driving noise reflected by the target obstacle 30. In the embodiment of the present application, when the current driving speed of the vehicle 20 exceeds the preset driving speed, noise reduction is performed on the first noise sound wave, which can further save the energy consumption caused by noise reduction while ensuring the noise reduction effect of the vehicle 20.
[0087] In some other embodiments, the condition for enabling the noise reduction mode includes: the current driving speed of the vehicle 20 exceeds the preset driving speed, and the distance between the target obstacle 30 and the vehicle 20 is within the preset distance range.
[0088] That is, when the vehicle 20 meets the above two conditions, the first sound collection device 12 starts to collect the first noise sound wave to further reduce the energy consumption.
[0089] In the actual application process, the vehicle noise reduction system 10 can also determine the condition for enabling the current noise reduction mode of the vehicle 20 according to the remaining energy of the vehicle 20 (such as the battery remaining amount of the vehicle 20).
[0090] For example, if the battery remaining amount is within the first range, the vehicle 20 can start the noise reduction mode when detecting the target obstacle 30, that is, start to perform noise reduction by collecting the first noise sound wave.
[0091] If the battery remaining amount is within the second range, the vehicle 20 can enable the noise reduction mode when the current driving speed exceeds the preset driving speed, or the distance between the target obstacle 30 and the vehicle 20 is within the preset distance range.
[0092] If the battery remaining amount is within the third range, the vehicle 20 can enable the noise reduction mode when the current driving speed exceeds the preset driving speed, and the distance between the target obstacle 30 and the vehicle 20 is within the preset distance range.
[0093] Among them, the battery remaining amount described by the first range > the battery remaining amount described by the second range > the battery remaining amount described by the third range.
[0094] The values of the remaining battery power described in the first range, the remaining battery power described in the second range, and the remaining battery power described in the third range can be set according to actual application requirements, and this embodiment of the application does not limit this.
[0095] After the driving noise reflected by the target shielding object 30 is collected, the driving noise can be converted into an electrical signal, and the electrical signal is transmitted to the sound generating device 13.
[0096] The sound-generating device 13 is disposed inside the vehicle 20 and is in communication connection with the first sound receiving device 12. The sound-generating device 13 is used to determine a first noise reduction wave based on the first noise sound wave, wherein the first noise reduction wave is a reverse sound wave of the first noise sound wave, and emit the first noise reduction wave into the vehicle 20.
[0097] The first noise reduction wave has a phase opposite to the first noise wave (i.e., a phase difference of 180 degrees), and has the same frequency.
[0098] In some embodiments, the sound-generating device 13 includes at least one speaker 131, which is disposed in the cabin of the vehicle 20 and can emit a first noise reduction wave. In the embodiment of the present application, the speaker 131 is disposed at a corresponding position in the cabin, and can emit a first noise reduction wave for the position of the passenger in the cabin, thereby improving the passenger's riding experience.
[0099] The sound generating device 13 may further include a noise processing module. The noise processing module may be a programmable software instruction stored in a memory and callable and executed by a processor, or may be a program instruction or firmware fixed in the processor.
[0100] The noise processing module is used to generate an electrical signal corresponding to the reverse sound wave of the first noise sound wave (i.e., the first noise reduction wave), and transmit the electrical signal to the speaker 131, and the speaker 131 emits the first noise reduction wave based on the electrical signal.
[0101] Furthermore, the speaker 131 on the side of the sound-generating device 13 close to the target shielding object 30 is used to emit a first noise reduction wave into the interior of the vehicle 20 based on the first noise sound wave.
[0102] Since the first noise sound wave will be preferentially transmitted to the cabin near the target shielding object 30, the embodiment of the present application emits the first noise sound wave through the speaker 131 near the target shielding object 30, which can improve the noise reduction efficiency and noise reduction effect.
[0103] In some embodiments, refer again to Figure 1 and Figure 2As shown, the vehicle noise reduction system 10 may further include a second sound receiving device 14, which is disposed inside the vehicle 20 and is in communication connection with the sound generating device 13. The second sound receiving device 14 is used to collect the noise sound waves (i.e., the second noise sound waves) inside the vehicle 20 after the sound generating device 13 emits the first noise reduction sound waves into the vehicle 20.
[0104] References Figure 4 As shown, the second noise sound wave is a noise sound wave formed by superimposing the first noise sound wave and the second noise reduction sound wave.
[0105] The second sound receiving device 14 may include at least one second microphone 141. The second microphone 141 may be installed in the cabin of the vehicle 20. The second microphone 141 is used to collect the second noise sound wave.
[0106] The second sound receiving device 14 may further include a noise reduction optimization module. The noise reduction optimization module may be a programmable software instruction stored in a memory and callable and executed by a processor, or may be a program instruction or firmware fixed in the processor.
[0107] The noise reduction optimization module is used to determine the noise reduction effect based on the second noise reduction wave.
[0108] For example, the noise reduction optimization module can be used to detect whether the second noise reduction wave is less than the preset noise standard value. If the second noise reduction wave is less than the preset noise standard value, it means that the noise inside the car meets the standard and the noise reduction effect is good.
[0109] If the second noise reduction wave is greater than the preset noise standard value, it means that the noise inside the car does not meet the standard. The noise reduction effect can be determined based on the difference between the second noise reduction wave and the noise standard value. The larger the difference, the worse the noise reduction effect.
[0110] The noise reduction optimization module can also determine whether to transmit the electrical signal corresponding to the second noise reduction wave to the sound generating device 13 according to the noise reduction effect.
[0111] For example, if the noise level in the vehicle does not meet the standard, the electrical signal corresponding to the second noise reduction wave is transmitted to the sound generating device 13.
[0112] The sound-generating device 13 is also used to determine a second noise reduction wave based on the second noise sound wave; and emit the second noise reduction wave into the interior of the vehicle 20, so that the vehicle noise reduction system 10 can further optimize the noise reduction for the second noise sound wave.
[0113] For example, the noise processing module of the sound generating device 13 can also be used to obtain an electrical signal corresponding to a second noise reduction wave based on the second noise sound wave, and transmit the electrical signal corresponding to the second noise reduction wave to the speaker 131, and the speaker 131 emits the second noise reduction wave to the interior of the vehicle 20 based on the electrical signal corresponding to the second noise reduction wave.
[0114] In some embodiments, determining the second noise reduction wave based on the second noise sound wave may include: obtaining the currently collected first noise sound wave from the first sound collection device 12, superimposing the currently collected first noise sound wave and the second noise sound wave to obtain the superimposed noise sound wave; using the reverse sound wave of the superimposed noise sound wave as the second noise reduction wave.
[0115] For example, the first noise sound wave collected last time is denoted as t. After the first noise sound wave t is reduced in noise by the first noise reduction wave, the second noise sound wave inside the vehicle 20 is obtained. The currently collected first noise sound wave is denoted as t + 1. The currently collected first noise sound wave t + 1 and the second noise sound wave can be superimposed to form the superimposed noise sound wave. Then, the reverse sound wave of the superimposed noise sound wave is used as the second noise reduction wave.
[0116] Embodiments of the present application can monitor the noise reduction effect and optimize based on the noise reduction effect, thereby further improving the noise reduction effect inside the vehicle 20.
[0117] When the vehicle 20 in the embodiments of the present application travels beside the target obstacle 30, it can collect the driving noise (i.e., the first noise sound wave) reflected by the target obstacle 30 and output the reverse sound wave of the first noise sound wave inside the vehicle 20, so that the first noise reduction wave transmitted to the inside of the vehicle 20 can be superimposed with the reverse sound wave, thereby reducing the noise sound wave reflected by the target obstacle 30 to the inside of the vehicle 20 during the driving of the vehicle 20. Compared with using sound insulation materials to reduce noise, it can suppress the noise with a high penetration rate and improve the riding comfort of the vehicle 20.
[0118] Embodiments of the present application also provide a vehicle noise reduction method, which can be applied to Figure 1 the vehicle noise reduction system 10 shown. Details about the vehicle noise reduction system 10 in this embodiment are substantially the same as those in the above embodiments. The vehicle noise reduction system 10 can be applied to the vehicle 20, and the vehicle 20 includes a sedan, a sports car, a truck, etc.
[0119] Refer to Figure 5 As shown, the vehicle noise reduction method includes:
[0120] Step 501, obtain the driving environment information of the vehicle to be reduced in noise.
[0121] The driving environment information can reflect whether there is a target obstacle 30 on the side of the driving road of the vehicle 20. For example, the driving environment information may include image data, and the side view of the driving road of the vehicle 20 is shown in the image data.
[0122] For example, refer to Figure 2 and Figure 3As shown, the vehicle noise reduction system 10 may include a camera 111, which is disposed on the outer side of the vehicle 20. The vehicle noise reduction system 10 may capture the driving environment of the vehicle 20 through the camera 111 to obtain image data.
[0123] Step 502: Based on the driving environment information, determine whether there is a target obstacle on at least one side of the driving road of the vehicle.
[0124] Reference Figure 4 As shown, the target obstacle 30 may be an obstacle such as a roadside fence, guardrail, wall, tunnel sidewall, etc. that can reflect driving noise.
[0125] In some embodiments, step 502 may include: Based on the image data, determine whether there is a target obstacle 30 on at least one side of the driving road of the vehicle 20.
[0126] Furthermore, in some embodiments, the method for determining whether there is a target obstacle 30 on at least one side of the driving road of the vehicle 20 based on the image data may include: The vehicle noise reduction system 10 inputs the image data into a pre-trained image classification model to obtain the category of the image data, and the category of the image data is that there is a target obstacle 30 on at least one side of the driving road of the vehicle 20 shown in the image data, or there is no target obstacle 30 on at least one side of the driving road of the vehicle 20 shown in the image data.
[0127] For another example, the vehicle noise reduction system 10 inputs the image data into a pre-trained target detection model, and the target detection model is used to detect the target obstacle 30 based on the image data.
[0128] The above methods for detecting the target obstacle 30 in the image data are only examples. In actual application, it can be set according to requirements, and the embodiments of the present application do not limit this.
[0129] Step 503: If there is a target obstacle on at least one side of the driving road of the vehicle, collect the first noise sound wave, and the first noise sound wave is the driving noise reflected by the target obstacle.
[0130] The vehicle noise reduction system 10 may collect the first noise sound wave on the outer side of the vehicle 20, and this outer side is the side of the vehicle 20 close to the target obstacle 30.
[0131] For example, with reference to Figure 2 and Figure 3 As shown, the vehicle noise reduction system 10 may include a first microphone 121 disposed outside the vehicle 20. The first microphone 121 is installed on the side of the vehicle 20, and the vehicle noise reduction system 10 may collect the driving noise reflected by the target obstacle 30 on the side of the driving road through the first microphone 121.
[0132] In some embodiments, step 503 may include: if there is a target obstacle 30 on at least one side of the driving road of the vehicle 20, detecting whether the vehicle 20 currently meets the preset noise reduction mode activation condition; if the vehicle 20 meets the noise reduction mode activation condition, it indicates that the driving noise reflected by the target obstacle 30 may be relatively large, and the first noise sound wave can be collected to activate the noise reduction mode of the vehicle 20, so that the vehicle 20 can reduce the driving noise reflected by the target obstacle 30.
[0133] Further, the noise reduction mode activation condition may include: the distance between the target obstacle 30 and the vehicle 20 is within a preset distance range.
[0134] This preset distance range can be set according to actual application requirements, and the embodiments of the present application do not limit this. The distance between the target obstacle 30 and the vehicle 20 can be calculated based on image data or determined by other means, and the embodiments of the present application do not limit this.
[0135] The greater the distance between the target obstacle 30 and the vehicle 20, the smaller the driving noise reflected by the target obstacle 30; the smaller the distance between the target obstacle 30 and the vehicle 20, the greater the driving noise reflected by the target obstacle 30. In the embodiments of the present application, when the distance between the target obstacle 30 and the vehicle 20 is within the preset distance range, noise reduction is performed on the first noise sound wave, which can save the energy consumption caused by noise reduction while ensuring the noise reduction effect of the vehicle 20.
[0136] In some other embodiments, the noise reduction mode activation condition includes: the current driving speed of the vehicle 20 exceeds the preset driving speed.
[0137] The greater the driving speed, the greater the driving noise reflected by the target obstacle 30. In the embodiments of the present application, when the current driving speed of the vehicle 20 exceeds the preset driving speed, noise reduction is performed on the first noise sound wave, which can save the energy consumption caused by noise reduction while ensuring the noise reduction effect of the vehicle 20.
[0138] In some other embodiments, the noise reduction mode activation condition includes: the current driving speed of the vehicle 20 exceeds the preset driving speed, and the distance between the target obstacle 30 and the vehicle 20 is within a preset distance range.
[0139] That is, when the vehicle 20 meets the above two conditions, the first sound collection device 12 starts to collect the first noise sound wave to further reduce energy consumption.
[0140] In the actual application process, the vehicle noise reduction system 10 can also determine the current noise reduction mode activation condition of the vehicle 20 according to the remaining energy of the vehicle 20 (such as the battery remaining amount of the vehicle 20).
[0141] For example, if the remaining battery power is within the first range, the vehicle 20 may start the noise reduction mode when detecting the target obstacle 30, that is, collect the first noise sound wave and start noise reduction.
[0142] If the remaining battery power is within the second range, the vehicle 20 may turn on the noise reduction mode when the current driving speed exceeds the preset driving speed, or the distance between the target obstacle 30 and the vehicle 20 is within the preset distance range.
[0143] If the remaining battery power is within the third range, the vehicle 20 may turn on the noise reduction mode when the current driving speed exceeds the preset driving speed and the distance between the target obstacle 30 and the vehicle 20 is within the preset distance range.
[0144] Among them, the remaining battery power described by the first range > the remaining battery power described by the second range > the remaining battery power described by the third range.
[0145] The above method for determining the opening condition of the noise reduction mode currently used by the vehicle 20 is only an example, and can be set according to requirements during actual application. The embodiments of the present application do not limit this.
[0146] Step 504, determine the first noise reduction sound wave based on the first noise sound wave.
[0147] Among them, the first noise reduction sound wave is the reverse sound wave of the first noise sound wave.
[0148] That is, the phase of the first noise reduction sound wave is opposite to the phase of the first noise sound wave (that is, a difference of 180 degrees), and the frequencies are the same.
[0149] Step 505, emit the first noise reduction sound wave into the vehicle interior.
[0150] In some embodiments, referring again to Figure 2 As shown, the vehicle noise reduction system 10 may include at least one speaker 131. The speaker 131 is arranged in the cockpit of the vehicle 20, and the speaker 131 can emit the first noise reduction sound wave. In the embodiments of the present application, the speaker 131 is arranged at the corresponding position in the cockpit, and the first noise reduction sound wave can be emitted for the position where the passengers are located in the cockpit, improving the riding experience of the passengers.
[0151] Furthermore, the vehicle noise reduction system 10 may control the speaker 131 on the side close to the target obstacle 30 to emit the first noise reduction sound wave.
[0152] Since the first noise sound wave will be preferentially transmitted to the cockpit on the side close to the target obstacle 30, in the embodiments of the present application, by emitting the first noise sound wave through the speaker 131 on the side close to the target obstacle 30, the noise reduction efficiency and the noise reduction effect can be improved.
[0153] When the vehicle 20 is traveling beside the target obstacle 30 in the embodiment of the present application, the traveling noise (i.e., the first noise sound wave) reflected by the target obstacle 30 can be collected, and the reverse sound wave of the first noise sound wave can be output inside the vehicle 20, so that the first noise reduction sound wave transmitted to the inside of the vehicle 20 can be superimposed with the reverse sound wave, thereby reducing the noise sound wave reflected by the target obstacle 30 into the inside of the vehicle 20 during the driving of the vehicle 20. Compared with using sound insulation materials to reduce noise, it can suppress the noise with a high penetration rate and improve the riding comfort of the vehicle 20.
[0154] After the first noise reduction sound wave is emitted into the vehicle 20, the noise reduction effect can also be monitored and optimized for the noise reduction effect. For example, reference can be made to Figure 4 and Figure 6 As shown, the vehicle noise reduction method may further include:
[0155] Step 601, collect the second noise sound wave inside the vehicle.
[0156] In some embodiments, referring again to Figure 2 As shown, the vehicle noise reduction system 10 may further include at least one second microphone 141. The second microphone 141 may be installed in the cockpit of the vehicle 20, and the vehicle noise reduction system 10 may collect the second noise sound wave through the second microphone 141.
[0157] After the second noise reduction sound wave is collected, the vehicle noise reduction system 10 may also determine the noise reduction effect based on the second noise reduction sound wave.
[0158] For example, detect whether the second noise reduction sound wave is less than a preset noise standard value. If the second noise reduction sound wave is less than the preset noise standard value, it indicates that the in-vehicle noise meets the standard and the noise reduction effect is good.
[0159] If the second noise reduction sound wave is greater than the preset noise standard value, it indicates that the in-vehicle noise does not meet the standard. The noise reduction effect can be determined based on the difference between the second noise reduction sound wave and the noise standard value. The larger the difference, the worse the noise reduction effect.
[0160] After the second noise reduction sound wave is collected, step 602 can be executed to perform noise reduction optimization.
[0161] Step 602, determine the second noise reduction sound wave based on the second noise sound wave.
[0162] In some embodiments, step 602 may include: obtaining the currently collected first noise sound wave, superimposing the currently collected first noise sound wave and the second noise sound wave to obtain a superimposed noise sound wave; using the reverse sound wave of the superimposed noise sound wave as the second noise reduction sound wave.
[0163] For example, the first noise sound wave collected last time is denoted as t. After the first noise sound wave t is denoised by the first noise reduction wave, the second noise sound wave inside the vehicle 20 is obtained. The first noise sound wave collected currently is denoted as t+1. The currently collected first noise sound wave t+1 and the second noise sound wave can be superimposed to form a superimposed noise sound wave. Then, the reverse sound wave of the superimposed noise sound wave is used as the second noise reduction wave.
[0164] Step 603: Emit the second noise reduction wave into the vehicle interior.
[0165] In some embodiments, the second noise reduction wave can be emitted through the horn 131 provided inside the vehicle 20.
[0166] The embodiments of the present application can monitor the noise reduction effect and optimize based on the noise reduction effect, so as to further improve the noise reduction effect inside the vehicle 20.
[0167] Reference Figure 1 and Figure 2 As shown, the embodiments of the present application further provide a vehicle 20, which may include the vehicle noise reduction system 10 in the above embodiments.
[0168] For those skilled in the art, the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. In addition, it is obvious that the word "including" does not exclude other units or steps, and the singular does not exclude the plural. The multiple units or electronic devices stated in the claims of the electronic device can also be implemented by the same unit or electronic device through software or hardware. First, second, etc. are used to represent names and do not represent any specific order.
[0169] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.
Claims
1. A vehicle noise reduction method, characterized in that: include: Acquiring driving environment information of a vehicle to be subjected to noise reduction; Based on the driving environment information, determining whether there is a target obstruction on at least one side of the driving road of the vehicle; If there is a target obstruction on at least one side of the driving road of the vehicle, collecting a first noise sound wave, where the first noise sound wave is driving noise reflected by the target obstruction; Determine a first noise reduction wave based on the first noise sound wave, wherein the first noise reduction wave is a reverse sound wave of the first noise sound wave; The first noise reduction wave is emitted toward the interior of the vehicle.
2. The vehicle noise reduction method according to claim 1, characterized in that: After the first noise reduction wave is emitted to the interior of the vehicle, the method further includes: collecting a second noise sound wave inside the vehicle; determining a second noise reduction wave based on the second noise sound wave; The second noise reduction wave is emitted toward the interior of the vehicle.
3. The vehicle noise reduction method according to claim 1, characterized in that: The collecting of the first noise sound wave comprises: Detecting whether the vehicle currently meets a preset noise reduction mode activation condition; If the vehicle meets the noise reduction mode activation condition, the first noise sound wave is collected.
4. The noise reduction method according to claim 3, characterized in that: The noise reduction mode activation conditions include: The distance between the target obstruction and the vehicle is within a preset distance range, and / or the current driving speed of the vehicle exceeds a preset driving speed.
5. The vehicle noise reduction method according to any one of claims 1 to 4, characterized in that: The driving environment information includes image data, and the image data displays the driving environment of the vehicle; The determining, based on the driving environment information, whether there is a target obstruction on at least one side of the driving road of the vehicle comprises: Based on the image data, it is determined whether there is a target obstruction on at least one side of the driving road of the vehicle.
6. A vehicle noise reduction system, characterized in that: Applied to vehicles, including: An environment monitoring device, the environment monitoring device is configured on the vehicle, the environment monitoring device is used to obtain driving environment information of the vehicle, and based on the driving environment information, determine whether there is a target obstruction on at least one side of the driving road of the vehicle; a first sound receiving device, the first sound receiving device being disposed outside the vehicle and being in communication connection with the environment monitoring device, the first sound receiving device being used to collect a first noise sound wave when there is a target obstruction on at least one side of the driving road of the vehicle, the first noise sound wave being driving noise reflected by the target obstruction; a sound-generating device, the sound-generating device being disposed inside the vehicle and being in communication connection with the first sound receiving device, the sound-generating device being used to determine a first noise reduction wave based on the first noise sound wave, wherein the first noise reduction wave is a reverse sound wave of the first noise sound wave; The first noise reduction wave is emitted toward the interior of the vehicle.
7. The vehicle noise reduction system according to claim 6, characterized in that: The vehicle noise reduction system further comprises: a second sound receiving device, the second sound receiving device being disposed inside the vehicle and being in communication connection with the sound generating device, the second sound receiving device being used to collect a second noise sound wave inside the vehicle after the sound generating device emits the first noise reduction sound wave into the vehicle; The sound generating device is further configured to determine a second noise reduction wave based on the second noise sound wave; and emit the second noise reduction wave into the interior of the vehicle.
8. The vehicle noise reduction system according to claim 6, characterized in that: The driving environment information includes image data, and the image data displays the driving environment of the vehicle; The environmental monitoring device includes a camera, which is arranged on the outer side of the vehicle. The camera is used to capture the driving environment of the vehicle and obtain the image data; the environmental monitoring device is used to determine whether there is a target obstruction on at least one side of the driving road of the vehicle based on the image data.
9. The vehicle noise reduction system according to any one of claims 6 to 8, characterized in that: The sound-generating device includes at least one speaker, and the speaker is arranged in the cabin of the vehicle. The speaker in the sound-generating device close to the target shielding object is used to emit a first noise reduction wave into the interior of the vehicle.
10. A vehicle, characterized in that: The vehicle comprises the vehicle noise reduction system according to any one of claims 6 to 9.