Vehicle noise reduction device and vehicle-mounted system

Abstract

The utility model provides a vehicle noise reduction device and a vehicle-mounted system, and the vehicle noise reduction device comprises an information collection part which is used for collecting an environment signal of a vehicle; the controller is coupled with the information acquisition part and is used for receiving the environment signals acquired by the information acquisition part; a noise reduction assembly, wherein the noise reduction assembly is coupled with the controller; the controller is configured to generate a noise reduction signal corresponding to the source type of the environment signal and control the noise reduction assembly to receive the noise reduction signal and execute noise reduction operation. Through the mode, the noise in the environment signal can be processed in advance before the noise reaches the human ears, and the noise reduction assembly is controlled to execute the noise reduction operation when the noise reaches, so that the real-time performance of noise reduction is ensured, and the noise reduction is more intelligent and automatic.

Description

TECHNICAL FIELD

[0001] The application applies to the field of vehicle noise reduction, and particularly relates to a vehicle noise reduction device and a vehicle-mounted system. BACKGROUND

[0002] Modern consumers have higher and higher requirements for the comfort of automobiles, and noise reduction technology has thus become an important means to improve the riding experience. Active noise control and road noise cancellation are widely used in high-end vehicles because they can effectively reduce the noise in the vehicle without increasing the weight of the vehicle.

[0003] However, in the prior art, when the noise reduction system processes noise, it takes a certain amount of time to process the noise, and the noise is processed when it reaches the human ear, resulting in some noise entering the human ear, which makes the real-time performance of the noise reduction system low, and different noise sources produce different noises. When the same noise reduction method is used to reduce noise, the noise reduction effect is not obvious, and the automation and intelligence of the noise reduction system in the prior art are not high. CONTENT OF THE UTILITY MODEL

[0004] The application provides a vehicle noise reduction device to solve the problems of noise reduction real-time performance and poor noise reduction effect in the prior art.

[0005] To solve the above technical problems, the application provides a vehicle noise reduction device, which comprises: an information collection part, the information collection part is used to collect the environmental signals of the vehicle; a controller, the controller is coupled with the information collection part and is used to receive the environmental signals collected by the information collection part; a noise reduction assembly, the noise reduction assembly is coupled with the controller; the controller is configured to generate a noise reduction signal corresponding to the source type of the environmental signal, and control the noise reduction assembly to receive the noise reduction signal and perform a noise reduction operation.

[0006] The controller comprises a control chip and a signal generation assembly, the control chip is coupled with the signal generation assembly, the control chip and the signal generation assembly are coupled with the information collection part, the signal generation assembly is also coupled with the noise reduction assembly, the control chip obtains the amplitude and phase of the noise in the environmental signal, the signal generation assembly generates a noise reduction signal with the same amplitude and opposite phase as the noise in the environmental signal, and transmits the noise reduction signal to the noise reduction assembly.

[0007] The controller further comprises a power amplification chip, the power amplification chip is coupled with the signal generation assembly and the noise reduction assembly respectively, and is used to amplify the gain of the noise reduction signal, and transmit the noise reduction signal after gain reduction to the noise reduction assembly.

[0008] The noise reduction assembly comprises a loudspeaker, the loudspeaker is coupled with the controller, is used to receive the noise reduction signal, and generates a sound to reduce the noise in the environment of the vehicle.

[0009] The environment signal includes an external noise signal and an internal noise signal; the signal generating assembly includes a first signal generator and a second signal generator, the first signal generator and the second signal generator are coupled with the control chip and the noise reduction assembly, the first signal generator is used for receiving the external noise signal and generating a noise reduction signal with the same amplitude and opposite phase as the external noise signal, and the second signal generator is used for receiving the internal noise signal and generating a noise reduction signal with the same amplitude and opposite phase as the internal noise signal.

[0010] The information acquisition part includes a laser ranging module coupled with the control chip and the first signal generator to obtain the distance and speed of the external component and transmit to the control chip and the first signal generator to make the first signal generator generate a corresponding noise reduction signal, and / or an image acquisition module coupled with the control chip and the first signal generator to obtain the image of the external component and transmit to the control chip and the first signal generator to make the first signal generator generate a corresponding noise reduction signal, and / or an acceleration acquisition module coupled with the second signal generator to obtain the acceleration of the vehicle and transmit to the second signal generator to make the second signal generator generate a corresponding noise reduction signal.

[0011] The information acquisition part includes a sound source acquisition module coupled with the controller, the sound source acquisition module is used for acquiring the sound source signal in the vehicle and transmitting to the controller, the controller generates a corresponding noise reduction signal based on the sound source signal, and controls the noise reduction assembly to receive the noise reduction signal and perform noise reduction operation.

[0012] The controller includes an analog-to-digital converter coupled with the controller and the sound source acquisition module to convert the sound source signal acquired by the sound source acquisition module and transmit to the controller.

[0013] The controller further includes a preprocessing chip coupled with the information acquisition part and the controller, the preprocessing chip is used for preprocessing the environment signal and transmitting the preprocessed environment signal to the control chip.

[0014] To solve the above problems, the application also provides a vehicle-mounted system, which includes: a vehicle noise reduction device, the vehicle noise reduction device is any one of the above vehicle noise reduction devices.

[0015] The beneficial effects of the application are: different from the prior art, the application can collect the environment signal in which the vehicle is located in advance by setting the information acquisition part, transmit the environment signal collected in advance to the controller, process the environment signal by the controller and generate a noise reduction signal corresponding to the source type of the environment signal, can process the noise in the environment signal in advance before the noise reaches the ear, and control the noise reduction assembly to perform noise reduction operation when the noise reaches, ensure the real-time of noise reduction, and make the noise reduction more intelligent and automatic. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural diagram of an embodiment of a vehicle noise reduction device of the present application;

[0017] Figure 2 is a structural diagram of an embodiment of connection of a signal generation component and a control chip of the present application;

[0018] Figure 3 is a structural diagram of an embodiment of connection of a power amplification chip and a noise reduction component of the present application;

[0019] Figure 4 is a structural diagram of another embodiment of connection of a signal generation component and a control chip of the present application;

[0020] Figure 5 is a structural diagram of an embodiment of connection of an information collection module and a controller of the present application;

[0021] Figure 6 is a structural diagram of another embodiment of a vehicle noise reduction device of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0023] It should be noted that if the embodiments of the present application involve directionality indications (such as up, down, left, right, front, back, etc.), the directionality indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications also change accordingly.

[0024] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0025] Please refer toFigure 1 , Figure 1 This is a structural block diagram of an embodiment of the vehicle noise reduction device provided in this application.

[0026] This application provides a vehicle noise reduction device, such as Figure 1 As shown, the vehicle noise reduction device includes: an information acquisition unit 10, a controller 20, and a noise reduction component 30. The information acquisition unit 10 is used to acquire environmental signals of the vehicle's location. The controller 20 is coupled to the information acquisition unit 10 and is used to receive the environmental signals acquired by the information acquisition unit 10. The noise reduction component 30 is coupled to the controller 20. The controller 20 is configured to generate a noise reduction signal corresponding to the source type of the environmental signal and controls the noise reduction component 30 to receive the noise reduction signal and perform noise reduction operations. The type of environmental signal acquired by the information acquisition unit 10 can be obstacles, other vehicles, or pedestrians, etc. After receiving different types of environmental signals, the controller 20 generates corresponding noise reduction signals and transmits them to the noise reduction component 30, and controls the noise reduction component 30 to perform corresponding noise reduction operations.

[0027] Generally speaking, after the noise in the environmental signal is transmitted to the vehicle, the controller 20 obtains the noise in the environmental signal. Since the controller 20 needs a certain amount of time to process the environmental signal, after the noise reaches the vehicle, the controller 20 processes the noise to generate a noise reduction signal corresponding to the noise, and controls the noise reduction component 30 to perform noise reduction operation. During this period, the noise has reached the human ear, resulting in an insignificant noise reduction effect.

[0028] To address this, the information acquisition unit 10 in this application collects environmental signals from the vehicle and transmits them to the controller 20. Upon receiving the environmental signals, the controller 20 analyzes them and determines the type of environmental signal. Based on this, it generates a corresponding noise reduction signal and transmits it to the noise reduction component 30, controlling the component to perform the appropriate noise reduction operation. Specifically, after the information acquisition unit 10 collects and transmits the environmental signals from the vehicle to the controller 20, the controller 20 can determine the source of the noise in the environmental signals and the time required for the vehicle to reach the noise source. This allows the controller 20 to process the noise in the environmental signals in advance, generating a noise reduction signal corresponding to the noise. When the vehicle reaches the noise source, the controller 20 controls the noise reduction component 30 to perform the corresponding noise reduction operation based on the noise reduction signal. In other words, the controller 20 can process the environmental signals in advance when the vehicle reaches the noise source, and can promptly control the noise reduction component 30 to perform the appropriate noise reduction operation, effectively solving the delay performance issue in the controller 20's environmental signal processing. It can preprocess the noise in the environmental signal before it reaches the human ear, and control the noise reduction component 30 to perform noise reduction operation when the noise arrives, making noise reduction more intelligent and automated.

[0029] Further, the information collection component 10 can collect the environmental signal in which the vehicle is located in real time and transmit to the controller 20, the controller 20 processes the environmental signal in real time and generates a noise reduction signal corresponding to the type of source of the environmental signal, when the vehicle reaches the noise source position, the control component executes the corresponding noise reduction operation in time based on the noise reduction signal.

[0030] In a specific application scenario, when the vehicle passes through the road surface containing the deceleration strip, the collection device can collect the deceleration strip contained in the road surface and transmit the information to the controller 20, the controller 20 receives the information that the road surface contains the deceleration strip, processes it, and can calculate the noise generated when the vehicle passes through the deceleration strip. The controller 20 generates a noise reduction signal corresponding to the noise according to the noise, and transmits the noise reduction signal to the noise reduction device. When the controller 20 obtains the noise, the controller 20 can obtain the time when the vehicle reaches the deceleration strip, and when the vehicle reaches the deceleration strip and collides with the deceleration strip, it controls the noise reduction device to execute the corresponding noise reduction operation with the noise reduction signal, so as to execute the noise reduction operation corresponding to the type of noise through the noise reduction component 30.

[0031] In the above manner, the information collection component 10 is arranged to collect the environmental signal in which the vehicle is located in advance, and the environmental signal collected in advance is transmitted to the controller 20, the controller 20 processes the environmental signal and generates a noise reduction signal corresponding to the type of source of the environmental signal, which can process the noise in the environmental signal in advance before the noise reaches the ear, and control the noise reduction component 30 to execute the noise reduction operation when the noise reaches, which ensures the real-time of noise reduction and makes the noise reduction more intelligent and automatic.

[0032] In an optional embodiment, as Figure 2As shown, the controller 20 comprises a control chip 201 and a signal generating component 202, the control chip 201 is coupled with the signal generating component 202, the control chip 201 and the signal generating component 202 are coupled with the information acquisition device 10, the signal generating component 202 is further coupled with the noise reduction component 30, the control chip 201 acquires the amplitude and phase of the noise in the environmental signal, the signal generating component 202 generates a noise reduction signal with the same amplitude and opposite phase of the noise in the environmental signal, and transmits it to the noise reduction component 30. Among them, the signal acquisition component transmits the environmental signal of the vehicle to the control chip 201 and the signal generating component 202, the control chip 201 receives and analyzes the environmental signal, judges the type of noise generated in the environmental signal, and according to the type of noise source target, the amplitude and phase of the corresponding noise are obtained, and then the control chip 201 controls the signal generating component 202 to generate a noise reduction signal with opposite amplitude and phase of the noise, the signal generating component 202 transmits the noise reduction signal to the noise reduction component 30, and the noise reduction component 30 performs noise reduction operation based on the noise reduction signal with the same amplitude and opposite phase of the noise, to reduce the noise in the environment of the vehicle.

[0033] In this embodiment, the information acquisition device 10 collects the environment of the vehicle in advance, and transmits the collected environmental signal to the control chip 201, the control chip 201 judges the type of noise source based on the environmental signal, for example, vehicle, pit, etc., based on the type of source, judges the size of the noise generated when the vehicle reaches the noise source position, so as to control the signal generating component 202 to generate a noise reduction signal with the same amplitude and opposite phase of the noise, when the vehicle reaches the noise source position, the signal generating component 202 transmits the noise reduction signal to the noise reduction component 30, to control the noise reduction component 30 to perform noise reduction operation.

[0034] In other embodiments, the information collection unit 10 collects the ambient signals of the vehicle, which can include the noise generated by the noise source target and the noise of the current environment of the vehicle. The information collection unit 10 can first transmit the noise of the environment of the vehicle to the signal generation component 202, so that the signal generation component 202 generates a noise reduction signal corresponding to the noise of the environment of the vehicle, and the control chip 201 controls the signal generation component 202 to transmit the noise reduction signal to the noise reduction component 30, so that the noise reduction component 30 reduces the current noise. Then the information collection unit 10 transmits the noise source target to the control chip 201, the control chip 201 analyzes and processes the noise type of the noise source target, and controls the signal generation component 202 to generate a noise reduction signal corresponding to the noise of the noise source target, and controls the noise reduction component 30 to perform noise reduction operation when the vehicle reaches the noise source. Specifically, the signal generation component 202 is coupled with the control chip 201, after the collection component collects the noise of the current environment of the vehicle and transmits it to the signal generation component 202, the control chip 201 can directly control the signal generation component 202 to generate a noise reduction signal with the same amplitude and opposite phase as the current noise, and transmit it to the noise reduction component 30, so that the noise reduction component 30 performs real-time noise reduction processing. And because the type of noise source target is collected by the collection component, the control chip 201 needs to analyze it, so as to obtain the amplitude and phase of the noise generated by the noise source target, or the noise amplitude and phase generated by the vehicle reaching the position of the noise source target and colliding with it, when the vehicle reaches the position of the noise source target, the control chip 201 controls the signal generator to generate a noise reduction signal with the same amplitude and opposite phase as the noise, and controls the noise reduction component 30 to perform noise reduction operation to reduce the noise.

[0035] Further, in order to increase the noise reduction effect of the noise reduction component 30, a power amplification chip 40 is arranged in the controller 20 after the signal generation component 202 generates the noise reduction signal, the power amplification chip 40 is coupled with the signal generation component 202 and the noise reduction component 30 respectively, for gain of the noise reduction signal, and transmits the gain noise reduction signal to the noise reduction component 30. That is, after the control chip 201 controls the signal generation component 202 to generate a noise reduction signal with the same phase and opposite phase as the noise, the signal generation component 202 transmits the noise reduction signal to the power amplification chip 40 to gain the noise reduction signal, so as to ensure the stability of the noise reduction component 30 when reducing noise.

[0036] In an optional embodiment, the noise reduction component 30 is configured as a speaker to generate sound with the same amplitude and opposite phase as the noise to reduce the noise when the noise reaches the vehicle, or other noise reduction devices, which are not limited in the present application. The speaker is coupled to the controller 20 to receive the signal and generate sound to reduce the noise in the environment where the vehicle is located. After the controller 20 calculates the amplitude and phase of the noise in the environment where the vehicle is located based on the environmental signal, the noise reduction signal with the same amplitude and opposite phase as the noise is generated and transmitted to the speaker, and the speaker generates sound to reduce the noise. Specifically, the speaker is coupled to the power amplifier signal, that is, the control chip 201 obtains the noise type of the noise source target based on the environmental signal collected by the information collection component 10, and obtains the amplitude and phase of the noise generated by the noise source target. The control chip 201 controls the signal generation component 202 to generate a noise reduction signal with the same amplitude and opposite phase as the noise, and transmits the noise reduction signal to the speaker after processing by the power amplifier chip 40. The speaker generates corresponding sound based on the noise reduction signal with the same amplitude and opposite phase as the noise, thereby reducing the noise.

[0037] In an optional embodiment, as Figure 4As shown, the environmental signal includes an external noise signal and an internal noise signal, the signal generating assembly 202 includes a first signal generator 2021 and a second signal generator 2022, both of which are coupled with the control chip 201 and the noise reduction assembly 30, the first signal generator 2021 is configured to receive the external noise signal and generate a noise reduction signal with the same amplitude and opposite phase as the external noise signal, and the second signal generator 2022 is configured to receive the internal noise signal and generate a noise reduction signal with the same amplitude and opposite phase as the internal noise signal. That is, during the driving of the vehicle, the collision of the vehicle with the ground will cause noise in the vehicle, so the noise entering the human ear not only exists external noise but also exists internal noise. When reducing the noise, the noise in the vehicle can be reduced in real time first, the noise in the vehicle can be directly transmitted to the second signal generator 2022, the control chip 201 controls the second signal generator 2022 to generate a noise reduction signal with the same amplitude and opposite phase as the internal noise, and transmits the noise reduction signal to the noise reduction assembly 30 through the power amplifier chip 40, and the noise reduction assembly 30 reduces the noise in the vehicle in real time based on the noise reduction signal, so that the noise is reduced before entering the human ear. The first signal generator 2021 is configured to obtain the external noise signal, the control chip 201 controls the first signal generator 2021 to generate a noise reduction signal with the same amplitude and opposite phase as the external noise, and then transmits the noise reduction signal to the noise reduction assembly 30 to reduce the external noise. That is, the first signal generator 2021 generates a noise reduction signal with the same amplitude and opposite phase as the external noise, and the second signal generator 2022 generates a noise reduction signal with the same amplitude and opposite phase as the internal noise, which can simultaneously reduce the noise in and outside the vehicle, effectively reducing the influence of the noise on the user.

[0038] In an optional embodiment, as Figure 5As shown, the information acquisition unit 10 includes a laser ranging module 101, an image acquisition module 102, and an acceleration acquisition module 103. The laser ranging module 101 is coupled to the control chip 201 and the first signal generator 2021, and is configured to acquire the distance and speed of the noise source target from the vehicle, so as to determine the time for the vehicle to reach the noise source target, and facilitate the control chip 201 to control the noise reduction assembly 30 to perform noise reduction operation in time when the vehicle reaches the position of the noise source target. Specifically, the laser detection module emits a laser beam to the noise source target, and receives the reflected signal, and transmits the signal to the control chip 201. The control chip 201 calculates the time difference of the laser beam to and fro, and thus calculates the distance and speed of the noise source target from the vehicle. Then, the control chip 201 calculates the time required for the vehicle to reach the position of the noise source target, so as to facilitate the noise reduction assembly 30 to reduce noise in time. The image acquisition module 102 is coupled to the control chip 201 and the first signal generator 2021, and is configured to acquire the image of the environment where the vehicle is located. After the image acquisition device transmits the image of the external environment to the control chip 201, the control chip 201 analyzes the image, so as to determine the type of the noise source, such as vehicle, obstacle, pedestrian, pothole, etc., and thus determine the size and type of noise generated by the noise source target when the vehicle reaches the position of the noise source target, so as to control the first signal generator 2021 to generate a noise reduction signal with the same amplitude and opposite phase corresponding to the noise type.

[0039] In the embodiment, as shown in Figure 6 The controller 20 further includes a preprocessing chip 203, which is coupled to the information acquisition unit 10 and the controller 20. The preprocessing chip 203 is configured to preprocess the environmental signal, and transmit the preprocessed environmental signal to the control chip 201. Specifically, the preprocessing chip 203 can be coupled to the control chip 201 and the first signal generator 2021. After the image acquisition module 102 acquires the image of the external environment of the vehicle, the preprocessing chip 203 can preprocess the acquired image, such as noise reduction, color and brightness adjustment, etc., so as to improve the quality of the acquired image to obtain more comprehensive environmental information, and transmit the preprocessed environmental information to the control chip 201, which can effectively reduce the processing amount of the control chip 201 and improve the efficiency of the control chip 201 in processing data. Moreover, it is convenient for the control chip 201 to lock the key target of the noise source in the image. Alternatively, the preprocessing chip 203 can use a machine vision algorithm to detect and identify the type of the key target in the image, and transmit the extracted key target type to the control chip 201, so as to further reduce the time consumed by the control chip 201 in judging the key target.

[0040] Generally, when the vehicle travels at a constant speed, the noise generated by the vehicle itself is small, and when the vehicle accelerates, the noise generated by the vehicle itself is large. Therefore, as shown in Figure 5 the acceleration acquisition module 103 coupled with the second signal generator 2022 can be used to acquire the acceleration of the vehicle itself, and transmit the vehicle acceleration to the second signal generator 2022. The control chip 201 obtains the amplitude and phase of the noise generated by the vehicle under the acceleration based on the acceleration of the vehicle, and controls the second signal generator 2022 to generate a noise reduction signal with the same amplitude and opposite phase as the noise. Further, the control chip 201 acquires the acceleration of the vehicle through the acceleration acquisition module 103, and acquires the distance between the noise source target and the vehicle and the distance of the noise source target through the laser ranging module 101, so as to calculate the time required for the vehicle to reach the noise source target position. The first signal generator 2021 generates a corresponding noise reduction signal within the time, so as to facilitate noise reduction and timely execution of noise reduction operation. The acceleration acquisition module 103 can be provided with a plurality of acceleration acquisition modules, for example, provided at the wheels of the vehicle, so as to obtain the corresponding acceleration through the rotation speed of the wheels, calculate the average acceleration of the wheels, and thus more accurately obtain the acceleration of the vehicle. The present application does not make specific limitation here.

[0041] In an optional embodiment, the pre-processing chip 203 and the control chip 201 can be connected by using a CNA (Controller Area Network) serial bus, and the pre-processing chip 203 and the first signal generator 2021 are directly connected by using an audio bus to transmit the collected external noise to the first signal generator 2021. The noise signal collected by the signal generation assembly 202 can be transmitted by using a time division multiplexing mode, so as to ensure that the signal generation assembly 202 receives different data signals at different times. The first signal generator 2021 and the second signal generator 2022, and the second signal generator 2022 and the control chip 201 communicate by using an SPI (Serial Peripheral Interface) mode, which can transmit data in a time bidirectional and high level manner. The above communication mode can also use other communication modes, and the present application does not make specific limitation here.

[0042] In other embodiments, the information acquisition device 10 can further include a sonar ranging module (not shown). The sonar ranging module is coupled with the first signal generator 2021 and the control chip 201. When the external environment of the vehicle is collected, the sonar ranging module emits sound waves. After the sound waves interact with the noise source target, the sonar ranging module acquires the returned sound wave signal and transmits it to the controller 20. The controller 20 can analyze the signal to obtain the specific position of the noise source target.

[0043] In an optional embodiment, as shown in Figure 5 To further reduce the noise inside the vehicle, an audio source acquisition module 104 can be arranged in the vehicle and coupled with the controller 20. The audio source acquisition module 104 is configured to acquire the audio source signal inside the vehicle and transmit it to the controller 20. The controller 20 generates a corresponding noise reduction signal based on the audio source signal and controls the noise reduction assembly 30 to receive the noise reduction signal and perform noise reduction operation. Specifically, the audio source acquisition module 104 is coupled with the second signal generator 2022. After the audio source acquisition module 104 acquires the noise inside the vehicle, it transmits the noise inside the vehicle to the second signal sensor. The control chip 201 controls the second signal generator 2022 to generate a noise reduction signal with the same amplitude and opposite phase as the noise, and transmits the noise reduction signal to the noise reduction assembly 30 to reduce the noise inside the vehicle.

[0044] In an optional embodiment, as shown in Figure 5 The controller 20 includes an analog-to-digital converter 50, which is coupled with the controller 20 and the audio source acquisition module 104 to convert the audio source signal acquired by the audio source acquisition module 104 and transmit it to the controller 20. The audio source acquisition module 104 can simulate the noise inside the vehicle, so as to transmit the analog signal to the analog-to-digital converter 50. The analog-to-digital converter 50 converts the analog signal into a digital signal and transmits it to the second signal generator 2022. The control chip 201 controls the second signal generator 2022 to generate a noise reduction signal with the same amplitude and opposite phase as the internal noise, so as to control the noise reduction assembly 30 to perform noise reduction operation.

[0045] In a specific application scenario, when the vehicle is running and there is a vehicle on the road, the image acquisition module 102 acquires an environmental image outside the vehicle and transmits the image to the preprocessing chip 203, the preprocessing chip 203 pre-processes the image and obtains a key target of a noise source in the image, and then transmits the key target to the control chip 201, the control chip 201 judges the type of the noise source target based on the key target, so as to control the first signal generator 2021 to generate a corresponding noise reduction signal. The laser ranging module 101 can collect the speed of the key target and the distance from the vehicle, so that when the vehicle reaches the position of the noise source target, the first signal generator 2021 transmits the noise reduction signal to the loudspeaker to make the loudspeaker produce sound to reduce the noise. The acceleration acquisition module 103 acquires the acceleration of the vehicle and transmits it to the second signal generator 2022, and the sound source signal acquisition module acquires the sound source inside the vehicle and transmits it to the second signal generator 2022, the control chip 201 controls the second signal generator 2022 to generate a corresponding noise reduction signal based on the noise generated when the vehicle accelerates and the noise inside the vehicle, and transmits the noise reduction signal to the loudspeaker to make the loudspeaker produce sound to reduce the noise.

[0046] By the above manner, the information collecting piece 10 is arranged to collect the environment signal of the vehicle in advance, the controller 20 processes the environment signal and generates the noise reduction signal corresponding to the source type of the environment signal to control the noise reduction component 30 to perform the noise reduction operation, the noise reduction component 30 is controlled to perform the noise reduction operation when the noise reaches, so that the noise reduction is more intelligent and automatic. By arranging the control chip 201 and the signal generating component 202, the control chip 201 can control the signal generating component 202 to generate a noise reduction signal with the same amplitude and opposite phase as the noise, so as to facilitate the noise reduction of the noise reduction component 30. By arranging the signal generating component 202 and the power amplification chip 40 coupled to the noise reduction component 30, the power amplification chip 40 can amplify the noise reduction signal, thereby ensuring the stability of the noise reduction component 30 during noise reduction. By arranging the noise reduction component 30 as a loudspeaker, the loudspeaker can generate sound to reduce noise after receiving the noise reduction signal. By arranging the signal generating component 202 as the first signal generator 2021 and the second signal generator 2022, the first signal generator 2021 and the second signal generator 2022 can receive external noise and internal noise respectively, thereby improving the noise reduction effect. By arranging the laser ranging module 101, the image collecting module 102 and the acceleration collecting module 103, the key target of the noise source can be collected, thereby ensuring the noise reduction effect of the noise reduction signal generated by the signal generating component 202 on the key target. By arranging the preprocessing chip 203, the collected image can be preprocessed, thereby reducing the data processed by the system and improving the processing efficiency of the control chip 201. By arranging the sound source collecting module 104, the noise inside the vehicle can be obtained, thereby facilitating the controller 20 to generate corresponding noise reduction signal for the noise, thereby reducing the noise inside the vehicle.

[0047] The application also provides a vehicle-mounted system, which comprises: a vehicle noise reduction device arranged in the vehicle-mounted system, wherein the vehicle noise reduction device is any one of the above vehicle noise reduction devices.

[0048] The above is only an embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A vehicle noise reduction device, characterized by, The vehicle noise reduction device comprises: an information acquisition unit configured to acquire an environmental signal of a vehicle; a controller coupled to the information acquisition unit and configured to receive the environmental signal acquired by the information acquisition unit; a noise reduction assembly coupled to the controller, wherein the controller is configured to generate a noise reduction signal corresponding to a source type of the environmental signal and control the noise reduction assembly to receive the noise reduction signal and perform a noise reduction operation.

2. The vehicle noise reducing device of claim 1, wherein, The controller comprises a control chip and a signal generation assembly, wherein the control chip is coupled to the signal generation assembly, the control chip and the signal generation assembly are coupled to the information acquisition unit, and the signal generation assembly is further coupled to the noise reduction assembly; the control chip acquires an amplitude and a phase of noise in the environmental signal; the signal generation assembly generates a noise reduction signal having the same amplitude and opposite phase as the noise in the environmental signal and transmits the noise reduction signal to the noise reduction assembly.

3. The vehicle noise reducing device of claim 2, wherein, The controller further comprises a power amplification chip coupled to the signal generation assembly and the noise reduction assembly, respectively, for amplifying the noise reduction signal, and transmitting the amplified noise reduction signal to the noise reduction assembly.

4. The vehicle noise reducing device according to any one of claims 1 to 3, characterized by, The noise reduction assembly comprises a loudspeaker coupled to the controller, configured to receive the noise reduction signal and generate a sound to reduce noise in the environment of the vehicle.

5. The vehicle noise reducing apparatus of claim 2, wherein The environmental signal comprises an external noise signal and an internal noise signal. The signal generation assembly comprises a first signal generator and a second signal generator, both coupled to the control chip and the noise reduction assembly; the first signal generator is configured to receive the external noise signal and generate a noise reduction signal having the same amplitude and opposite phase as the external noise signal; and the second signal generator is configured to receive the internal noise signal and generate a noise reduction signal having the same amplitude and opposite phase as the internal noise signal.

6. The vehicle noise reducing device of claim 5, wherein, The information acquisition unit comprises: a laser ranging module coupled to the control chip and the first signal generator to acquire a distance and a speed of an external component and transmit the distance and the speed to the control chip and the first signal generator, so that the first signal generator generates a corresponding noise reduction signal; and / or an image acquisition module coupled to the control chip and the first signal generator to acquire an image of an external component and transmit the image to the control chip and the first signal generator, so that the first signal generator generates a corresponding noise reduction signal; and / or an acceleration acquisition module coupled to the second signal generator to acquire an acceleration of the vehicle and transmit the acceleration to the second signal generator, so that the second signal generator generates a corresponding noise reduction signal.

7. The vehicle noise reducing apparatus according to claim 1 or 6, characterized by The information acquisition unit comprises a sound source acquisition module coupled to the controller, wherein the sound source acquisition module is configured to acquire a sound source signal inside the vehicle and transmit the sound source signal to the controller; the controller generates a corresponding noise reduction signal based on the sound source signal and controls the noise reduction assembly to receive the noise reduction signal and perform a noise reduction operation.

8. The vehicle noise reducing device of claim 7, wherein, The controller comprises an analog-digital converter coupled with the controller and the sound source acquisition module to convert the sound source signal acquired by the sound source acquisition module and transmit to the controller.

9. The vehicle noise reducing apparatus of claim 2, wherein The controller further comprises a preprocessing chip coupled with the information acquisition unit and the controller, the preprocessing chip being configured to preprocess the environmental signal and transmit the preprocessed environmental signal to the control chip.

10. An in-vehicle system characterized by comprising: The vehicle-mounted system comprises the vehicle noise reduction device according to any one of claims 1-9.

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