Noise control system and noise control method

Abstract

The invention discloses a noise control system and a noise control method. The noise control system comprises a reference sensor module, an error sensor module, a controller and a target loudspeaker. Wherein the reference sensor module is used for acquiring an environment reference signal corresponding to a target vehicle; the error sensor module is used for collecting an environment error signal corresponding to the first target area; the controller is electrically connected with the reference sensor module and the error sensor module, and is used for receiving the environment reference signal and the environment error signal and outputting a sound wave control instruction; and the target loudspeaker is electrically connected with the controller and is used for receiving the sound wave control instruction and outputting target noise reduction sound waves. Through the above technical characteristics, based on the sound wave interference cancellation principle, in combination with the environment reference signal and the environment error signal collected by the reference sensor module and the error sensor module, the controller controls the sound waves emitted by the target loudspeaker, so that the noise reduction of the first target area is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to a noise control system and a noise control method. Background Art

[0002] As a main means of transportation for people's daily travel, cars bring convenience while the drivers and passengers are also troubled by the in-vehicle noise problem. The in-vehicle noise can be the engine running noise, the road noise caused by road vibrations, and the wind noise during high-speed driving, etc. It not only affects the passengers' riding experience, but may also interfere with the driver's concentration, and even endanger driving safety in some cases.

[0003] Traditional passive noise reduction technologies, such as sound absorption, sound insulation, and vibration damping, although they can reduce noise to a certain extent, in the face of a complex in-vehicle sound field environment and changing noise sources, their noise reduction effect is difficult to achieve a higher level of acoustic comfort. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to improve the accuracy of in-vehicle noise control.

[0005] To solve at least one of the above-mentioned technical problems, the present invention discloses a noise control system and a noise control method.

[0006] According to one aspect of the present application, a noise control system is provided, including:

[0007] A reference sensor module for obtaining an environmental reference signal corresponding to a target vehicle;

[0008] An error sensor module for collecting an environmental error signal corresponding to a first target area;

[0009] A controller electrically connected to the reference sensor module and the error sensor module respectively, the controller is configured to receive the environmental reference signal and the environmental error signal, and output a sound wave control instruction;

[0010] A target speaker electrically connected to the controller, for receiving the sound wave control instruction and outputting a target noise reduction sound wave.

[0011] Optionally, the error sensor module includes a noise reduction functional component, the noise reduction functional component is located on a side of the first target area close to the controller, and the distance from the first target area is less than a first preset distance;

[0012] The target speaker is located on a side of the first target area away from the reference sensor module, and the distance from the first target area is less than a second preset distance.

[0013] Optionally, the first preset distance is configured to be 10 cm, and the second preset distance is configured to be 10 cm.

[0014] Optionally, the noise reduction functional component and the first target area are distributed along a first direction, the target speaker and the first target area are distributed along a second direction, and the first direction intersects the second direction.

[0015] Optionally, the error sensor module further includes an error acoustic sensor, and the environmental error signal includes a first error signal and a second error signal;

[0016] The error acoustic sensor is used to collect the first error signal corresponding to the first target area, and the noise reduction functional component is used to collect the second error signal corresponding to the first target area.

[0017] Optionally, the controller is further configured to receive the first error signal and the second error signal, and determine a target error signal based on the first error signal and the second error signal, where the target error signal is the error signal of a second target area.

[0018] Optionally, the noise reduction functional component is further configured to receive the acoustic wave control instruction sent by the controller, and synchronously output the target noise reduction acoustic wave in cooperation with the target speaker.

[0019] Optionally, the reference sensor module includes a reference acoustic sensor, and the environmental reference signal includes a reference acoustic signal;

[0020] The number of the reference acoustic sensors is multiple, and they are arranged around the body of the target vehicle, and the reference acoustic sensors are used to collect the reference acoustic signal.

[0021] Optionally, the reference sensor module further includes a reference vibration sensor, and the environmental reference signal further includes a reference vibration signal;

[0022] The number of the reference vibration sensors is multiple, and they are arranged around the body of the target vehicle and the tires of the target vehicle, and the reference vibration sensors are used to collect the reference vibration signal.

[0023] According to a second aspect of the present application, there is provided a noise control method, including:

[0024] Obtaining an environmental reference signal corresponding to a target vehicle;

[0025] Obtaining an environmental error signal corresponding to a first target area;

[0026] Determine an acoustic wave control command based on the environmental reference signal and the environmental error signal;

[0027] Send the acoustic wave control command to a target speaker, so that the target speaker emits a target noise reduction acoustic wave in response to the acoustic wave control command.

[0028] Optionally, the environmental error signal includes a first error signal and a second error signal;

[0029] The determining the acoustic wave control command based on the environmental reference signal and the environmental error signal includes:

[0030] Determine a target error signal based on the first error signal and the second error signal, where the target error signal is the error signal of a second target area;

[0031] Determine the acoustic wave control command based on the environmental reference signal and the target error signal.

[0032] Optionally, before sending the acoustic wave control command to the target speaker, the method further includes:

[0033] Perform signal amplification processing on the acoustic wave control command to obtain an amplified acoustic wave control command.

[0034] According to a third aspect of the present application, there is provided a computer storage medium, in which at least one instruction and at least one program segment are stored, and the at least one instruction and the at least one program segment are loaded and executed by a processor to implement the noise control method as described in any one of the above.

[0035] The noise control system of the embodiments of the present application collects an environmental reference signal of a target vehicle through a reference sensor module, and obtains an environmental error signal of a first target area by using an error sensor module. The controller calculates and outputs an acoustic wave control command based on the environmental reference signal and the environmental error signal, so as to drive the target speaker to emit a target noise reduction acoustic wave with a phase opposite to that of the noise, thereby realizing active noise control of a specific target area.

[0036] This system combines the synergistic effects of a reference acoustic sensor and a vibration sensor, improves the accuracy of noise recognition, makes the noise reduction effect more accurate and stable, and can effectively reduce the interference of environmental noise to the inside of the vehicle or a specific area, and improve the comfort of the driver and passengers during the driving process.

[0037] Other features and advantages of the present application will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] To more clearly illustrate the technical solutions of the present invention, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] To more fully understand the present application and its beneficial effects, the following description will be made in conjunction with the drawings, where the same reference numerals represent the same parts in the following description.

[0040] Figure 1 The structural schematic diagram corresponding to the noise control system provided by the exemplary embodiment of the present disclosure;

[0041] Figure 2 The first front view corresponding to the noise control system provided by the exemplary embodiment of the present disclosure;

[0042] Figure 3 The side view corresponding to the noise control system provided by the exemplary embodiment of the present disclosure;

[0043] Figure 4 The second front view corresponding to the noise control system provided by the exemplary embodiment of the present disclosure;

[0044] Figure 5 The flowchart corresponding to the noise control method provided by the exemplary embodiment of the present disclosure;

[0045] Figure 6 The flowchart corresponding to the determination of the control instruction provided by the exemplary embodiment of the present disclosure.

[0046] Description of the reference numerals:

[0047] 10 - Reference sensor module, 11 - Reference acoustic sensor, 12 - Reference vibration sensor;

[0048] 20 - Error sensor module, 21 - Error acoustic sensor, 22 - Noise reduction functional component, 23 - Auxiliary acoustic sensor, 24 - Auxiliary speaker;

[0049] 30 - Controller;

[0050] 40 - Target speaker;

[0051] S1 - First target area, S2 - Second target area. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of this specification will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or server that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0054] The various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0055] The special term "exemplary" herein means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" herein does not have to be construed as superior to or better than other embodiments.

[0056] The term "and / or" in this article is an association relationship describing 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. In addition, the term "at least one" in this article means any one of a plurality or any combination of at least two of a plurality. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set composed of A, B, and C.

[0057] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present disclosure can also be implemented without some specific details. In some instances, methods, means, elements and circuits well known to those skilled in the art are not described in detail in order to highlight the gist of the present disclosure.

[0058] Figure 1Schematic structural diagram of the noise control system provided by an exemplary embodiment of the present disclosure; as Figure 1 shown, a noise control system includes:

[0059] A reference sensor module 10, including a reference acoustic sensor 11 and a reference vibration sensor 12, the reference sensor module 10 is used to obtain an environmental reference signal corresponding to the target vehicle; the environmental reference signal includes a reference acoustic signal and a reference vibration signal;

[0060] An error sensor module 20, including an error acoustic sensor 21 and a noise reduction functional component 22, the error sensor module 20 is used to collect an environmental error signal corresponding to the first target area S1; the environmental error signal includes a first error signal and a second error signal;

[0061] A controller 30, electrically connected to the reference sensor module 10 and the error sensor module 20 respectively, the controller 30 is used to receive the environmental reference signal and the environmental error signal, and output an acoustic wave control instruction;

[0062] A target speaker 40, electrically connected to the controller 30, is used to receive the acoustic wave control instruction and output a target noise reduction acoustic wave.

[0063] In a specific embodiment, as Figure 1 shown, the noise control system is arranged on the target vehicle, and may include a reference sensor module 10, an error sensor module 20, a controller 30 and a target speaker 40. The reference acoustic sensor 11 and the reference vibration sensor 12 arranged on the vehicle body of the target vehicle are used to pick up the environmental reference signal, and the error acoustic sensor 21 cooperates with the virtual sensing technology to pick up the environmental error signal of the first target area S1. Then, the controller 30 processes the environmental reference signal and the environmental error signal, and outputs an acoustic wave control instruction corresponding to the target noise reduction acoustic wave, so that the target speaker 40 emits the target noise reduction acoustic wave, which is superimposed on the original noise in the first target area S1, thereby realizing precise noise reduction of the first target area S1 based on the principle of acoustic wave interference cancellation. Among them, the first target area S1 is the area where the driver and passengers' heads are located, and it can be considered that the target noise reduction acoustic wave is an acoustic wave mainly for noise reduction in the first target area S1.

[0064] Please refer to Figure 1 , for the reference sensor module 10, the number of the reference acoustic sensors 11 included therein is multiple, and they are arranged around the vehicle body of the target vehicle, and the reference acoustic sensors 11 are used to collect reference acoustic signals. The number of the reference vibration sensors 12 is multiple, and they are arranged around the vehicle body of the target vehicle and the tires of the target vehicle, and the reference vibration sensors 12 are used to collect reference vibration signals.

[0065] In a specific embodiment, the number of reference acoustic sensors 11 and reference vibration sensors 12 can both be multiple and are arranged around the body of the target vehicle. Among them, the number of reference acoustic sensors 11 can be 8 and are arranged around the body; the number of reference vibration sensors 12 can be 6, 2 reference vibration sensors 12 can be arranged on the body, and 4 reference vibration sensors 12 can be arranged around the tires.

[0066] By collecting noise data at different positions through multiple sensors, it is possible to comprehensively cover noise information from different sources such as engine noise, road noise, and wind noise, which helps to accurately separate and identify the main noise sources and improve the response efficiency of the noise reduction system. In addition, by combining the data of multiple reference acoustic sensors 11 and vibration sensors, the controller 30 can calculate the acoustic wave control instructions more accurately, enabling the system to perform more targeted noise reduction processing for a specific seating area, such as the area where the driver and passengers are located.

[0067] Figure 2 The first front view corresponding to the noise control system provided by the exemplary embodiment of the present disclosure; Figure 3 The side view corresponding to the noise control system provided by the exemplary embodiment of the present disclosure; Please refer to Figure 2 and Figure 3 For the error sensor module 20, the error acoustic sensor 21 included therein is used to collect the first error signal corresponding to the first target area S1, and the noise reduction function member 22 is used to collect the second error signal corresponding to the first target area S1. The noise reduction function member 22 is further used to receive the acoustic wave control instruction issued by the controller 30 and synchronously output the target noise reduction acoustic wave in cooperation with the target speaker 40.

[0068] In a specific embodiment, the number of error acoustic sensors 21 can be multiple and can be greater than the number of noise reduction function members 22. Among them, the noise reduction function member 22 can be an active noise reduction headrest located on the backrest of the seat inside the target vehicle, or other structures located at the position of the headrest on the backrest of the seat inside the target vehicle and capable of realizing the function of the active noise reduction headrest; the error acoustic sensors 21 can be arranged around the noise reduction function member 22.

[0069] In the error sensor module 20, the first error signal of the first target area S1 is mainly collected by the error acoustic sensor 21; in the composition structure of the noise reduction function member 22, it can include an auxiliary acoustic sensor 23 and an auxiliary speaker 24. For example, when the noise reduction function member 22 is an active noise reduction headrest, a microphone serving as the auxiliary acoustic sensor 23 and the auxiliary speaker 24 can be integrated therein. Therefore, the noise reduction function member 22 can also collect the second error signal of the first target area S1, and both are sent to the controller 30 as environmental error signals at the same time.

[0070] In addition, since the noise reduction functional component 22 can also be equipped with an auxiliary speaker 24 and an auxiliary acoustic sensor 23, the noise reduction functional component 22 can also receive the acoustic wave control instruction sent by the controller 30 and cooperate with the target speaker 40 to emit the target noise reduction acoustic wave towards the target area.

[0071] By combining the error acoustic sensor 21 with the noise reduction functional component 22, the error sensor module 20 can collect the noise error signal more accurately, improve the adaptability and control accuracy of the noise reduction system, and ensure the uniformity and stability of the noise reduction effect in the target area. In addition, the noise reduction functional component 22 can also directly participate in the output of the noise reduction acoustic wave and work in cooperation with the target speaker 40, which can reduce the delay of the acoustic wave propagation to improve the real-time performance of the noise reduction effect.

[0072] Please continue to refer to Figure 2 and Figure 3 , the noise reduction functional component 22 is located on the side of the first target area S1 close to the controller 30 and is distributed along the first direction with the first target area S1; the target speaker 40 is located on the side of the first target area S1 far from the reference sensor module 10 and is distributed along the second direction with the first target area S1, and the first direction intersects with the second direction.

[0073] In a specific embodiment, as Figure 2 and Figure 3 shown, the first direction is the x direction, the second direction is the z direction, and the first direction is perpendicular to the second direction. For the noise reduction functional component 22 located on the side of the first target area S1 close to the controller 30, it can be understood that the noise reduction functional component 22 is arranged behind the first target area S1, that is, arranged at the rear side of the head of the driver and passengers; for the target speaker 40 located on the side of the first target area S1 far from the reference sensor module 10, it can be understood that the target speaker 40 is arranged above the first target area S1, that is, arranged above the head of the driver and passengers, that is, arranged on the roof of the target vehicle. Among them, the noise reduction functional component 22 and the target speaker 40 are used as secondary sound sources at the same time, and the two are vertically distributed.

[0074] In addition, please continue to refer to Figure 2 and Figure 3 , for the error acoustic sensor 21, it can not only be arranged around the noise reduction functional component 22, but also be arranged around the target speaker 40. In a specific embodiment, it can be considered that the number of the error acoustic sensors 21 is less than the number of the noise reduction functional components 22 and is equal to the number of the target speakers 40.

[0075] By setting the noise reduction functional component 22 and the target speaker 40 to be vertically distributed, the noise control area can be expanded, so that the sound field distribution in the noise control area is uniform, and the influence of the movement and rotation of the head of the driver and passengers on the noise control effect can be reduced.

[0076] In addition, the distance between the noise reduction functional component 22 and the first target area S1 is less than a first preset distance; the distance between the target loudspeaker 40 and the first target area S1 is less than a second preset distance; the first preset distance is configured to be 10 cm, and the second preset distance is configured to be 10 cm.

[0077] In a specific embodiment, the distance between the noise reduction functional component 22 and the first target area S1 is set to be less than the first preset distance, and the distance between the target loudspeaker 40 and the first target area S1 is less than the second preset distance, so that the target noise reduction sound wave can be emitted at a position close to the first target area S1, so that while realizing noise control in the first target area S1, the noise distribution in other areas is not affected. Moreover, arranging them closely can also reduce the secondary noise interference caused by sound reflection in the environment, making the noise reduction system more stable. Among them, both the first preset distance and the second preset distance can be configured to be 10 cm, or can be adaptively adjusted according to different vehicle models, so that the settings of the noise reduction functional component 22 and the target loudspeaker 40 can achieve the optimal noise reduction effect on the target area.

[0078] The controller 30 is further configured to receive a first error signal and a second error signal, and determine a target error signal based on the first error signal and the second error signal, where the target error signal is the error signal of the second target area S2.

[0079] Please refer to Figure 1 , in a specific embodiment, the position of the controller 30 can be set in the trunk of the target vehicle, and the controller 30 can be electrically connected to the reference sensor module 10, the error sensor module 20, and the target loudspeaker 40 respectively through a wire harness or other means.

[0080] Specifically, please refer to Figure 4 , the second target area S2 is the ear area of the driver and passengers. When the reference sensor module 10 collects the environmental reference signal and sends it to the controller 30, and the error sensor module 20 collects the environmental error signal and sends it to the controller 30, the controller 30 processes the first error signal and the second error signal according to the virtual sensing algorithm built in it in combination with the noise propagation characteristics, the current vehicle interior environment, etc., to obtain the target error signal corresponding to the second target area S2, and can move the noise control area from the first target area S1 to the second target area S2. Since the first target area S1 is the head area of the driver and passengers, and the second target area S2 is the ear area of the driver and passengers, it can be considered that the first target area S1 includes the second target area S2, or it can be considered that there is partial overlap between the first target area S1 and the second target area S2.

[0081] Further, the controller 30 calculates by means of its built-in active noise control algorithm in combination with the environmental reference signal and the target error signal to obtain an acoustic wave control instruction. For the acoustic wave control instruction, it can be directly sent to the noise reduction function component 22 and the target speaker 40, or sent to the noise reduction function component 22 and the target speaker 40 after being amplified by a power amplifier, so that the noise reduction function component 22 and the target speaker 40 cooperate with each other to emit a target noise reduction acoustic wave. The target noise reduction acoustic waves emitted by the target speaker 40 and the noise reduction function component 22 are coupled to each other and superimposed on other noises propagating to the target area, and based on the principle of acoustic wave interference cancellation, the purpose of controlling the noise in the target area is achieved.

[0082] The controller 30 is arranged at a position away from the interior space of the target vehicle, for example, arranged in the trunk of the target vehicle, which can effectively reduce the interference of the electronic device on the in-vehicle audio system, communication system, navigation system, etc., and at the same time reduce the impact of the electrical noise generated by the controller 30 itself on the passenger experience. In addition, since the reference sensor module 10, error sensor module 20, target speaker 40, etc. of the vehicle are distributed near the doors, roof, seats, tires, etc., the trunk position is in the central wiring area of the vehicle, which can conveniently connect each component and reduce the length and complexity of the wiring harness.

[0083] Correspondingly, the technical solution of the present application also discloses a noise control method, as Figure 5 and Figure 6 shown, a noise control method applied to the noise control system in any of the above embodiments, including:

[0084] Step S101: Obtain an environmental reference signal corresponding to the target vehicle;

[0085] Step S102: Obtain an environmental error signal corresponding to the first target area; the environmental error signal includes a first error signal and a second error signal;

[0086] Step S103: Determine an acoustic wave control instruction based on the environmental reference signal and the environmental error signal;

[0087] In a specific embodiment, the environmental reference signal, that is, the reference acoustic signal and the reference vibration signal, is obtained through the reference sensor module, and the environmental error signal is obtained through the error sensor module, and then the acoustic wave control instruction is determined by combining the environmental error signal and the environmental reference signal. Among them, since the environmental error signal includes a first error signal and a second error signal, it is necessary to process the first error signal and the second error signal first to adjust the noise control area.

[0088] Determining an acoustic wave control instruction based on the environmental reference signal and the environmental error signal includes:

[0089] Step S201: Determine a target error signal based on the first error signal and the second error signal, where the target error signal is the error signal of the second target area;

[0090] Step S202: Determine an acoustic wave control instruction based on the environmental reference signal and the target error signal.

[0091] In a specific embodiment, in order to improve the noise reduction effect and reduce the interference of noise on the driver and passengers, the target error signal corresponding to the ears of the driver and passengers can be determined by combining the first error signal and the second error signal, and then the acoustic wave control instruction can be determined by combining the target error signal.

[0092] In addition, before sending the acoustic wave control instruction to the target speaker, the acoustic wave control instruction can first be subjected to signal amplification processing to obtain an amplified acoustic wave control instruction.

[0093] Specifically, the acoustic wave control instruction is transmitted in the form of a signal. Since the signal output by the controller is generally a low-power audio signal with a small voltage and a weak current, directly sending it to the target speaker may not be able to effectively interfere with the noise due to the very small volume. Therefore, the acoustic wave control instruction can be subjected to signal amplification processing through a power amplifier to obtain an amplified acoustic wave control instruction. The power amplifier can ensure that the signal is not distorted while accurately amplifying the signal, ensuring that the target noise reduction wave output by the target speaker has the correct sound pressure level and phase relationship, thereby improving the noise reduction effect.

[0094] Step S104: Send an acoustic wave control instruction to the target speaker so that the target speaker synchronously emits a target noise reduction wave in response to the acoustic wave control instruction.

[0095] Specifically, the amplified acoustic wave control instruction can be sent to the target speaker so that the target speaker can emit a target noise reduction wave. In a specific embodiment, the amplified acoustic wave control instruction can also be sent to the noise reduction function component and the target speaker simultaneously so that the noise reduction function component and the target speaker cooperate to emit a target noise reduction wave to achieve noise reduction in the target area.

[0096] Through the above noise control system and the corresponding noise control method, accurate noise reduction can be achieved by combining the environmental reference signal and the environmental error signal; at the same time, synchronously controlling the noise reduction function component and the target speaker can optimize the sound field distribution, reduce local noise enhancement, and optimize the noise reduction in the ear area.

[0097] Correspondingly, the technical solution of the present application also discloses a computer storage medium, in which at least one instruction and at least one program segment are stored, and the at least one instruction and the at least one program segment are loaded and executed by a processor to implement the noise control method in any of the above embodiments.

[0098] Correspondingly, the technical solution of the present application further discloses a vehicle, which is configured to include the noise control system in any of the above embodiments and can implement the noise control method in any of the above embodiments.

[0099] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0100] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0101] The embodiments, implementation manners and related technical features of the present application can be combined and replaced with each other without conflict.

[0102] The above are the preferred embodiments of the present application, and there is no any form of restriction on the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application. The selection of the terms used herein is intended to best explain the principles of each embodiment, practical applications or improvements to the technology in the market, or enable other ordinary technical personnel in the technical field to understand the embodiments disclosed herein.

Claims

1. A noise control system, characterized in that, The system includes: a reference sensor module configured to obtain an environmental reference signal corresponding to a target vehicle; an error sensor module configured to collect an environmental error signal corresponding to a first target area; a controller electrically connected to the reference sensor module and the error sensor module respectively, the controller being configured to receive the environmental reference signal and the environmental error signal and output an acoustic control instruction; a target speaker electrically connected to the controller, configured to receive the acoustic control instruction and output a target noise reduction acoustic wave.

2. The noise control system according to claim 1, characterized in that, The error sensor module includes a noise reduction functional component, the noise reduction functional component being located on a side of the first target area close to the controller and having a distance from the first target area less than a first preset distance; The target speaker is located on a side of the first target area away from the reference sensor module and has a distance from the first target area less than a second preset distance.

3. The noise control system according to claim 2, wherein The first preset distance is configured to be 10 cm, and the second preset distance is configured to be 10 cm.

4. The noise control system according to claim 2, characterized in that, The noise reduction functional component and the first target area are distributed along a first direction, and the target speaker and the first target area are distributed along a second direction, and the first direction intersects with the second direction.

5. The noise control system according to claim 2, wherein The error sensor module further includes an error acoustic sensor, and the environmental error signal includes a first error signal and a second error signal; The error acoustic sensor is configured to collect the first error signal corresponding to the first target area, and the noise reduction functional component is configured to collect the second error signal corresponding to the first target area.

6. The noise control system according to claim 5, wherein The controller is further configured to receive the first error signal and the second error signal and determine a target error signal based on the first error signal and the second error signal, the target error signal being an error signal of a second target area.

7. The noise control system according to claim 2, wherein The noise reduction functional component is further configured to receive the acoustic control instruction sent by the controller and synchronously output the target noise reduction acoustic wave in cooperation with the target speaker.

8. The noise control system according to claim 1, wherein The reference sensor module includes a reference acoustic sensor, and the environmental reference signal includes a reference acoustic signal; The number of the reference acoustic sensors is multiple and they are arranged around the body of the target vehicle, and the reference acoustic sensors are configured to collect the reference acoustic signal.

9. The noise control system according to claim 8, wherein The reference sensor module further includes a reference vibration sensor, and the environmental reference signal further includes a reference vibration signal; The number of the reference vibration sensors is multiple and they are arranged around the body of the target vehicle and the tires of the target vehicle, and the reference vibration sensors are configured to collect the reference vibration signal.

10. A noise control method, characterized in that, Applied to the noise control system according to any one of claims 1-9, the method includes: obtaining an environmental reference signal corresponding to a target vehicle; obtaining an environmental error signal corresponding to a first target area; determining an acoustic control instruction based on the environmental reference signal and the environmental error signal; sending the acoustic control instruction to a target speaker so that the target speaker responds to the acoustic control instruction and emits a target noise reduction acoustic wave.

11. The noise control method according to claim 10, wherein, The environmental error signal includes a first error signal and a second error signal; Determining an acoustic wave control instruction based on the environmental reference signal and the environmental error signal includes: Determining a target error signal based on the first error signal and the second error signal, where the target error signal is the error signal of a second target area; Determining the acoustic wave control instruction based on the environmental reference signal and the target error signal.

12. The noise control method according to claim 10, wherein Before sending the acoustic wave control instruction to the target speaker, the method further includes: Performing signal amplification processing on the acoustic wave control instruction to obtain an amplified acoustic wave control instruction.

13. A computer storage medium, characterized in that, At least one instruction and at least one program are stored in the computer storage medium, and the at least one instruction and the at least one program are loaded and executed by a processor to implement the noise control method according to any one of claims 10-12.

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