CN112951195A - Vehicle-mounted active noise reduction dynamic regulation and control method and system - Google Patents
Vehicle-mounted active noise reduction dynamic regulation and control method and system Download PDFInfo
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- CN112951195A CN112951195A CN202110205140.2A CN202110205140A CN112951195A CN 112951195 A CN112951195 A CN 112951195A CN 202110205140 A CN202110205140 A CN 202110205140A CN 112951195 A CN112951195 A CN 112951195A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
- G10K11/17823—Reference signals, e.g. ambient acoustic environment
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
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Abstract
The invention discloses a vehicle-mounted active noise reduction dynamic regulation and control method and a system, wherein the regulation and control method comprises the steps of obtaining sound wave data of various noises at a plurality of preset positions; obtaining a noise type according to the characteristics of various noise sound wave data and by combining the surrounding environment data; analyzing a weight ratio through the sound wave data and the data surrounding environment data, and carrying out real-time dynamic regulation and control to distinguish noise reduction according to the weight ratio; the surrounding pavement environment can be automatically analyzed, and the optimal noise reduction effect is achieved while the driving safety is ensured; noise from different sources can be subjected to targeted, intelligent, dynamic and real-time noise reduction treatment through different proportion weight analysis; human intervention can be superimposed, and noise reduction processing can be selectively carried out on a noise source.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a vehicle-mounted active noise reduction dynamic regulation and control method and system.
Background
On one hand, the traditional vehicle-mounted noise reduction uses a traditional passive noise reduction method to create a closed environment and reduce noise generated by external forces such as tire noise, wind noise and the like; on the other hand, the noise which is difficult to process, such as engine noise, is further subjected to deep noise reduction through an active noise reduction technology, so that a silent environment in the vehicle is created. However, the active noise reduction is often applied in the field of automobiles to cause excessive noise reduction, that is, traffic prompt sounds emitted from the road surface environment outside the automobile inside the automobile also have the same noise reduction effect, for example: the noise-reduced interior of the vehicle is insensitive to the whistling sound of other vehicles on the road. In addition, such active noise reduction usually processes multi-source noise uniformly, lacks a human intervention function, cannot determine a noise reduction path by self-definition, and needs to be achieved. Therefore, in the prior art, a contradiction that the noise reduction requirement is high, but the potential safety hazard to the driving environment is possibly caused may occur.
The noise of the automobile mainly comes from road noise, tire noise, wind noise, engine noise and other aspects, and the noise control in the automobile compartment is an important part in the automobile technology, and particularly has high requirements on compartment noise control of medium and high-grade automobiles. In the prior art, noise in the automobile compartment is mainly suppressed by improving the sealing performance of the compartment, a damping system of a chassis, the sound insulation effect of an engine compartment, a silent tire and the like. The above techniques all belong to passive noise reduction techniques, which can reduce the noise decibels in the vehicle cabin, but the noise reduction degree is limited, and especially when the automobile runs at high speed, the noise in the vehicle cabin is still strong.
Disclosure of Invention
The invention aims to provide a vehicle-mounted active noise reduction dynamic regulation and control method and a vehicle-mounted active noise reduction dynamic regulation and control system, which can automatically analyze the surrounding pavement environment and achieve the optimal noise reduction effect while ensuring the driving safety; noise from different sources can be subjected to targeted, intelligent, dynamic and real-time noise reduction treatment through different proportion weight analysis; human intervention can be superimposed, and noise reduction processing can be selectively carried out on a noise source.
In a first aspect, an embodiment of the present invention provides a vehicle-mounted active noise reduction dynamic regulation and control method, where the regulation and control method includes the following steps:
acquiring sound wave data of various noises at a plurality of preset positions;
obtaining a noise type according to the characteristics of various noise sound wave data and by combining the surrounding environment data;
and analyzing the weight ratio through the sound wave data and the data surrounding environment data, and carrying out real-time dynamic regulation and control according to the weight ratio to distinguish noise reduction.
Optionally, obtaining the noise type according to the characteristics of various types of noise sound wave data and by combining the ambient environment data includes:
the noise type is analyzed through the data of the surrounding road environment and the driving condition obtained by the vehicle speed, the GPS positioning and the vehicle-mounted radar sensor.
Optionally, the preset position various noises include: left front side wind noise and tire noise, right front side wind noise and tire noise, engine noise, left rear side wind noise, right rear side wind noise and left rear side tire noise.
In a second aspect, an embodiment of the present invention provides a vehicle-mounted active noise reduction dynamic regulation and control system, where the regulation and control system includes:
the system comprises a plurality of noise source induction subsystems, a plurality of noise source induction subsystems and a plurality of noise source detection subsystems, wherein the plurality of noise source induction subsystems are used for acquiring sound wave data of various types of noise at a plurality of preset positions;
the intelligent analysis and pre-judgment subsystem is used for obtaining noise types according to the characteristics of various noise sound wave data and by combining the surrounding environment data;
the sound source superposition calculation processing subsystem is used for superposing the sound wave data and carrying out reverse offset processing; and the loudspeaker system in the vehicle is used for carrying out loudspeaker cancellation and noise reduction on the processed sound wave.
Optionally, the multiple noise source inducers subsystem specifically includes:
a sensor module including a plurality of sensors mounted at an engine, tires, front and rear windshields of a vehicle;
and the noise acquisition module is used for acquiring sound wave data of various noises at a plurality of preset positions.
Optionally, the sensor module comprises a plurality of sensors, and the mounting locations of the sensors comprise an engine, a tire, and a windshield.
Optionally, the noise collection module includes a plurality of microphones, and the microphones are used to monitor noise, and specifically include: left front side wind noise and tire noise, right front side wind noise and tire noise, engine noise, left rear side wind noise, right rear side wind noise and left rear side tire noise.
Optionally, the sound wave data is superimposed, and the inverse cancellation process includes:
superposing sound waves of a plurality of sound sources, and solving superposed sound wave data for the vector sum of vibration displacement caused at any position when each train wave exists independently in a meeting area;
and calculating the superposed sound wave data to obtain reverse sound waves, and offsetting the two reverse sound waves.
Advantageous effects
The invention provides a vehicle-mounted active noise reduction dynamic regulation and control method and a system, wherein a vehicle-mounted audio encryption method is used for obtaining sound wave data of various noises at a plurality of preset positions; obtaining a noise type according to the characteristics of various noise sound wave data and by combining the surrounding environment data; analyzing a weight ratio through the sound wave data and the data surrounding environment data, and carrying out real-time dynamic distinguishing noise reduction according to the weight ratio; the surrounding pavement environment can be automatically analyzed, and the optimal noise reduction effect is achieved while the driving safety is ensured; noise from different sources can be subjected to targeted, intelligent, dynamic and real-time noise reduction treatment through different proportion weight analysis; human intervention can be superimposed, and noise reduction processing can be selectively carried out on a noise source.
Drawings
Fig. 1 is a flowchart of a vehicle-mounted active noise reduction dynamic regulation and control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of specific positions of various types of noise at predetermined positions according to an embodiment of the present invention;
fig. 3 is a block diagram of a structure of a vehicle-mounted active noise reduction dynamic regulation and control system according to an embodiment of the present invention;
FIG. 4 is a block diagram of a multi-noise source induction subsystem according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a vehicle-mounted active noise reduction dynamic regulation and control method and system, which can automatically analyze the surrounding pavement environment and achieve the optimal noise reduction effect while ensuring the driving safety; noise from different sources can be subjected to targeted, intelligent, dynamic and real-time noise reduction treatment through different proportion weight analysis; human intervention can be superimposed, and noise reduction processing can be selectively carried out on a noise source. The invention will be further described with reference to the following description and specific examples, taken in conjunction with the accompanying drawings:
fig. 1 shows a flowchart of a vehicle-mounted active noise reduction dynamic regulation method according to an embodiment of the present invention, and as shown in fig. 1, the regulation method includes the following steps:
s20, acquiring sound wave data of various noises at a plurality of preset positions;
s40, obtaining a noise type according to the characteristics of various noise sound wave data and by combining the ambient environment data;
and S60, analyzing the weight ratio through the sound wave data and the data surrounding environment data, and carrying out real-time dynamic regulation and control according to the weight ratio to distinguish noise reduction.
The embodiment provides a vehicle-mounted active noise reduction dynamic regulation and control method, which comprises the steps of obtaining sound wave data of various noises at a plurality of preset positions; obtaining a noise type according to the characteristics of various noise sound wave data and by combining the surrounding environment data; analyzing a weight ratio through the sound wave data and the data surrounding environment data, and carrying out real-time dynamic distinguishing noise reduction according to the weight ratio; the surrounding pavement environment can be automatically analyzed, and the optimal noise reduction effect is achieved while the driving safety is ensured; noise from different sources can be subjected to targeted, intelligent, dynamic and real-time noise reduction treatment through different proportion weight analysis; human intervention can be superimposed, and noise reduction processing can be selectively carried out on a noise source.
Specifically, obtaining the noise type according to the characteristics of various types of noise sound wave data and by combining the ambient environment data includes:
the noise type is analyzed through the data of the surrounding road environment and the driving condition obtained by the vehicle speed, the GPS positioning and the vehicle-mounted radar sensor.
Specifically, as shown in fig. 2, the preset positions include various types of noise: left front wind noise and tire noise 2021, right front wind noise and tire noise 2022, engine noise 2023, left rear wind noise 2024, right rear wind noise 2025, left rear tire noise 2026, right rear tire noise 2027.
Based on the same inventive concept, the embodiment of the present application further provides a vehicle-mounted active noise reduction dynamic regulation and control system, which can be used for implementing the method described in the above embodiment, as described in the following embodiment. The principle of solving the problems of the active noise reduction system is similar to that of a vehicle-mounted active noise reduction dynamic regulation and control method, so the implementation of the vehicle-mounted active noise reduction dynamic regulation and control system can refer to the implementation of the vehicle-mounted active noise reduction dynamic regulation and control method, and repeated parts are not repeated. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
As shown in fig. 3, an embodiment of the present invention provides a vehicle-mounted active noise reduction dynamic regulation and control system, where the regulation and control system includes:
a multiple noise source inducer subsystem 20 for acquiring sound wave data of various types of noise at multiple preset positions;
the intelligent analysis and pre-judgment subsystem 40 is used for obtaining noise types according to the characteristics of various noise sound wave data and by combining the surrounding environment data;
a sound source superposition calculation processing subsystem 60, which is used for carrying out superposition and reverse cancellation processing on the sound wave data;
and an in-vehicle speaker system 80 for speaker cancellation noise reduction of the processed sound waves.
The embodiment provides a vehicle-mounted active noise reduction dynamic regulation and control system, which obtains sound wave data of various noises at a plurality of preset positions through a plurality of noise source induction subsystems 20; obtaining a noise type according to the characteristics of various noise sound wave data and by combining the surrounding environment data; the intelligent analysis and pre-judgment subsystem 40 is used for obtaining the noise type according to the characteristics of various noise sound wave data and by combining the surrounding environment data; the sound source superposition calculation processing subsystem 60 superposes the sound wave data, and the sound wave data are subjected to reverse cancellation processing; the processed sound waves are subjected to speaker cancellation noise reduction by the in-vehicle speaker system 80. The surrounding pavement environment can be automatically analyzed, and the optimal noise reduction effect is achieved while the driving safety is ensured; noise from different sources can be subjected to targeted, intelligent, dynamic and real-time noise reduction treatment through different proportion weight analysis.
Specifically, as shown in fig. 4, the multiple noise source inducer system 20 specifically includes:
a sensor module 201 including a plurality of sensors mounted at an engine, tires, front and rear windshields of a vehicle;
and the noise acquisition module is used for acquiring sound wave data of various noises at a plurality of preset positions.
The noise acquisition module 202 is configured to acquire acoustic wave data of various types of noise at a plurality of preset positions.
Specifically, the sensor module 201 includes a plurality of sensors, and the installation positions of the sensors include an engine, a tire, and a windshield.
Specifically, as shown in fig. 2, the noise collection module 202 includes a plurality of microphones, and the microphones are used for monitoring noise, and specifically include: left front wind noise and tire noise 2021, right front wind noise and tire noise 2022, engine noise 2023, left rear wind noise 2024, right rear wind noise 2025, left rear tire noise 2026, right rear tire noise 2027.
Specifically, the sound wave data are superimposed, and the reverse cancellation processing includes:
superposing sound waves of a plurality of sound sources, and solving superposed sound wave data for the vector sum of vibration displacement caused at any position when each train wave exists independently in a meeting area;
and calculating the superposed sound wave data to obtain reverse sound waves, and offsetting the two reverse sound waves. The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A vehicle-mounted active noise reduction dynamic regulation and control method is characterized by comprising the following steps:
acquiring sound wave data of various noises at a plurality of preset positions;
obtaining a noise type according to the characteristics of various noise sound wave data and by combining the surrounding environment data;
and analyzing the weight ratio through the sound wave data and the data surrounding environment data, and carrying out real-time dynamic regulation and control according to the weight ratio to distinguish noise reduction.
2. The method of claim 1, wherein obtaining the noise type based on the noise sound data characteristics and the ambient data comprises:
the noise type is analyzed through the data of the surrounding road environment and the driving condition obtained by the vehicle speed, the GPS positioning and the vehicle-mounted radar sensor.
3. The method for regulating and controlling according to claim 1, wherein the preset position noise comprises: left front side wind noise and tire noise, right front side wind noise and tire noise, engine noise, left rear side wind noise, right rear side wind noise and left rear side tire noise.
4. A vehicle-mounted active noise reduction dynamic regulation system is characterized by comprising:
the system comprises a plurality of noise source induction subsystems, a plurality of noise source induction subsystems and a plurality of noise source detection subsystems, wherein the plurality of noise source induction subsystems are used for acquiring sound wave data of various types of noise at a plurality of preset positions;
the intelligent analysis and pre-judgment subsystem is used for obtaining noise types according to the characteristics of various noise sound wave data and by combining the surrounding environment data;
the sound source superposition calculation processing subsystem is used for superposing the sound wave data and carrying out reverse offset processing;
and the loudspeaker system in the vehicle is used for carrying out loudspeaker cancellation and noise reduction on the processed sound wave.
5. The regulation system of claim 4, wherein the multiple noise source inducer system comprises:
the sensor module comprises a plurality of sensor noise acquisition modules which are arranged at the engine, the tires and the front and rear windshields of the vehicle and are used for acquiring sound wave data of various noises at a plurality of preset positions.
6. The conditioning system of claim 4 wherein the sensor module comprises a plurality of sensors, the mounting locations of the sensors comprising an engine, a tire, a windshield.
7. The regulation and control system of claim 4, wherein the noise collection module comprises a plurality of microphones, and the microphones are configured to monitor noise, and specifically comprise: left front side wind noise and tire noise, right front side wind noise and tire noise, engine noise, left rear side wind noise, right rear side wind noise and left rear side tire noise.
8. The regulation system of claim 4 wherein the acoustic data is superimposed and the counter-cancellation process comprises:
superposing sound waves of a plurality of sound sources, and solving superposed sound wave data for the vector sum of vibration displacement caused at any position when each train wave exists independently in a meeting area;
and calculating the superposed sound wave data to obtain reverse sound waves, and offsetting the two reverse sound waves.
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| CN113903323A (en) * | 2021-12-08 | 2022-01-07 | 比亚迪股份有限公司 | Vehicle noise reduction system and car |
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