Vehicle front wall sound insulation performance detection method, device, equipment and medium

Abstract

The invention discloses a vehicle front wall sound insulation performance detection method and device, equipment and a medium. A preset audio file is played by controlling an active vehicle sound system of a vehicle; acquiring first noise data detected by a first microphone arranged at a loudspeaker of the active vehicle sound system in a playing process of the audio file; acquiring second noise data detected by a second microphone arranged in the vehicle in the playing process of the audio file; whether the sound insulation performance of the front wall of the vehicle is qualified or not is determined according to the first noise data and the second noise data, the sound insulation performance of the front wall of the vehicle is efficiently and accurately detected, an active vehicle sound system is used for playing an audio file for detection, and the detection cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle sound insulation detection, and in particular to a method, device, equipment and medium for detecting the sound insulation performance of a vehicle front enclosure. Background Art

[0002] The sound insulation performance of a vehicle is an important indicator for evaluating the comfort of the vehicle. The dash panel of a vehicle is an important component that separates the engine compartment from the passenger compartment. The sound insulation performance of the dash panel determines to a large extent the degree to which the driver and passengers are disturbed by noise.

[0003] When sound passes through the front of the vehicle, the firewall composed of sheet metal, multi-layer sound insulation structure and porous sound-absorbing material will isolate part of the sound, thereby reducing the noise level inside the car. When sound propagates through different media, reflection and transmission will occur. When sound waves propagate from the air to the firewall, they will be reflected and transmitted twice when passing through the interface between the air and the firewall, causing the loss of sound energy, thus producing a sound insulation effect.

[0004] However, the sound insulation effect of the vehicle's front enclosure is affected by many factors, such as the grammage, thickness, weight and assembly process of the sound-absorbing material. As a result, the sound insulation effect of the front enclosure after assembly of the whole vehicle may be uneven. Therefore, how to test the sound insulation and sealing performance of the vehicle's front enclosure is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides a method, device, equipment and measuring medium for detecting the sound insulation performance of the front enclosure of a vehicle, which can detect the sound insulation performance of the front enclosure of a vehicle efficiently, accurately and at a low cost.

[0006] In a first aspect, an embodiment of the present application provides a method for detecting the sound insulation performance of a vehicle's front enclosure, the method comprising:

[0007] Controlling the vehicle's active vehicle sound system to play a preset audio file;

[0008] Acquire first noise data detected by a first microphone disposed at a speaker of the active vehicle sound system during playback of the audio file;

[0009] Acquire second noise data detected by a second microphone disposed inside the vehicle during playback of the audio file;

[0010] Whether the sound insulation performance of the front enclosure of the vehicle is qualified is determined according to the first noise data and the second noise data.

[0011] In combination with the first aspect, in one implementation, determining whether the front wall sound insulation performance of the vehicle is qualified according to the first noise data and the second noise data includes:

[0012] Performing Fourier transform on the first noise data to obtain first frequency domain data;

[0013] Performing Fourier transform on the second noise data to obtain second frequency domain data;

[0014] Whether the sound insulation performance of the front enclosure of the vehicle is qualified is determined according to the first frequency domain data and the second frequency domain data.

[0015] In one implementation, determining whether the front wall sound insulation performance of the vehicle is qualified according to the first frequency domain data and the second frequency domain data includes:

[0016] Determine whether an absolute value of a difference between the second frequency domain data and the first frequency domain data is greater than a preset sound isolation fluctuation threshold;

[0017] If the absolute value of the difference between the second frequency domain data and the first frequency domain data is greater than the sound insulation volume fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is unqualified;

[0018] If the absolute value of the difference between the second frequency domain data and the first frequency domain data is less than or equal to the sound insulation volume fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is qualified.

[0019] In one implementation, determining whether the front wall sound insulation performance of the vehicle is qualified according to the first noise data and the second noise data further includes:

[0020] Convert the first frequency domain data into first noise amplitude data, and convert the second frequency domain data into second noise amplitude data;

[0021] Whether the front wall sound insulation performance of the vehicle is qualified is determined according to the first noise amplitude data and the second noise amplitude data.

[0022] In one implementation, determining whether the front wall sound insulation performance of the vehicle is qualified according to the first noise amplitude data and the second noise amplitude data includes:

[0023] Determine whether the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is greater than a preset noise amplitude fluctuation threshold;

[0024] If the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is greater than a preset noise amplitude fluctuation threshold, it is determined that the front wall sound insulation performance of the vehicle is unqualified;

[0025] If the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is less than or equal to the noise amplitude fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is qualified.

[0026] In one embodiment, before controlling the active vehicle sound system of the vehicle to play a preset audio file, the method further includes:

[0027] Controlling the hood, sunroof, doors and windows of the vehicle to be in a closed state;

[0028] Controlling the air inlet and outlet of the vehicle to be in a fully open state;

[0029] Controlling the windshield wipers, heating device, fan and air conditioner of the vehicle to stop operating;

[0030] The seat position of the vehicle is controlled to be in a middle position between the horizontal and vertical directions, and the seat back is in a vertical position.

[0031] In a second aspect, an embodiment of the present application provides a vehicle front wall sound insulation performance detection device, the vehicle front wall sound insulation performance detection device comprising:

[0032] a control module for controlling an active vehicle sound system of the vehicle to play a preset audio file;

[0033] A first acquisition module, configured to acquire first noise data detected by a first microphone disposed at a speaker of the active vehicle sound system during playback of the audio file;

[0034] A second acquisition module, which is used to acquire second noise data detected by a second microphone disposed inside the vehicle during the playback of the audio file;

[0035] A determination module is used to determine whether the front wall sound insulation performance of the vehicle is qualified according to the first noise data and the second noise data.

[0036] In conjunction with the second aspect, in one implementation, the determining module is further configured to:

[0037] Performing Fourier transform on the first noise data to obtain first frequency domain data;

[0038] Performing Fourier transform on the second noise data to obtain second frequency domain data;

[0039] Whether the sound insulation performance of the front enclosure of the vehicle is qualified is determined according to the first frequency domain data and the second frequency domain data.

[0040] In a third aspect, an embodiment of the present application provides a vehicle front enclosure sound insulation performance detection device, the vehicle front enclosure sound insulation performance detection device comprising a processor, a memory, and a vehicle front enclosure sound insulation performance detection program stored in the memory and executable by the processor, wherein when the vehicle front enclosure sound insulation performance detection program is executed by the processor, the steps of the vehicle front enclosure sound insulation performance detection method as described in any one of the above items are implemented.

[0041] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a vehicle front panel sound insulation performance detection program is stored, wherein when the vehicle front panel sound insulation performance detection program is executed by a processor, the steps of the vehicle front panel sound insulation performance detection method as described in any one of the above items are implemented.

[0042] The embodiments of the present application provide a method, device, equipment and medium for detecting the sound insulation performance of a vehicle's front enclosure, which controls the vehicle's active vehicle sound system to play a preset audio file; obtains first noise data detected by a first microphone disposed at a speaker of the active vehicle sound system during the playback of the audio file; obtains second noise data detected by a second microphone disposed inside the vehicle during the playback of the audio file; determines whether the sound insulation performance of the vehicle's front enclosure is qualified based on the first noise data and the second noise data, thereby achieving efficient and accurate detection of the vehicle's front enclosure sound insulation performance, and uses the active vehicle sound system to play audio files for detection, with low detection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a flow chart of an embodiment of a method for detecting the sound insulation performance of a vehicle front enclosure of the present application;

[0044] Figure 2 This is a schematic diagram of the functional modules of an embodiment of a vehicle front wall sound insulation performance detection device of the present application;

[0045] Figure 3 This is a schematic diagram of the hardware structure of the vehicle front sound insulation performance testing equipment involved in the embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0048] In a first aspect, an embodiment of the present application provides a method for detecting the sound insulation performance of a vehicle front enclosure.

[0049] In one embodiment, referring to Figure 1 , Figure 1This is a flow chart of the first embodiment of the vehicle front wall sound insulation performance detection method of the present application. Figure 1 As shown, the vehicle front wall sound insulation performance detection method includes:

[0050] Step S101: Control the active vehicle sound system of the vehicle to play a preset audio file.

[0051] It is worth mentioning that the Active Vehicle Audible Sound System (AVAS) is a system developed to solve the problem of quietness in electric vehicles (EV) and hybrid electric vehicles (HEV). In the context of new energy vehicles without engines running, new energy vehicles are very quiet when running at low speeds, but at the same time, they may also bring safety hazards. Therefore, the AVAS system is designed to generate artificial sounds when electric and hybrid vehicles are driving to alert pedestrians and other road users. The AVAS system usually includes one or more speakers and a control unit. The control unit can control the speakers to emit sounds of different volumes or tones according to factors such as driving status. For example, when an electric vehicle is driving at a low speed or reversing, the AVAS system can play a more obvious sound to alert nearby pedestrians to the vehicle.

[0052] Exemplarily, the type, volume and tone of the audio file can be set as required. The audio file in this embodiment is a white noise signal S0, and the white noise signal S0 is built into the active vehicle sound AVAS system, and the signal is played through the speaker of the active vehicle sound AVAS system for testing the sound insulation performance of the front wall of the vehicle.

[0053] Step S102: Acquire first noise data detected by a first microphone disposed at a speaker of the active vehicle sound system during playback of the audio file.

[0054] Exemplarily, a first microphone may be arranged at a speaker of the active vehicle sound AVAS system, and during the playback of the white noise signal S0 , the noise data at the speaker is detected by the first microphone, thereby acquiring the first noise data N1 .

[0055] Step S103: Acquire second noise data detected by a second microphone disposed inside the vehicle during playback of the audio file.

[0056] Exemplarily, a second microphone may be arranged inside the vehicle, and during the playback of the white noise signal S0, the second microphone may detect the noise data inside the vehicle within a fixed time period t, thereby acquiring the second noise data N2.

[0057] In one embodiment, before controlling the active vehicle sound system of the vehicle to play a preset audio file and during the process of testing the sound insulation performance of the vehicle's front enclosure, the engine hood, sunroof, doors and windows of the vehicle are controlled to be in a closed state; the air inlet and air outlet of the vehicle are controlled to be in a fully open state; the wipers, heater, fan and air conditioner of the vehicle are controlled to be in a stopped state, thereby eliminating the interference of other sounds in the vehicle during the test, ensuring the acquisition of accurate second noise data, and further ensuring the accuracy of the vehicle's front enclosure sound insulation performance test.

[0058] If the seat in the vehicle is adjustable, the seat position is controlled to be in the middle position between the horizontal direction and the vertical direction. If the seat back is adjustable, the seat back is adjusted to be in the vertical position.

[0059] When the second microphone is arranged in the vehicle, the second microphone can be arranged at a position corresponding to the head of the driver and passenger when sitting in the vehicle, so that the second noise data collected by the second microphone is more consistent with the noise heard by the human ear.

[0060] It is worth mentioning that before conducting the vehicle's front enclosure sound insulation performance test, the vehicle should be placed in a quiet environment, such as a soundproof room, to eliminate interference from other sounds outside the vehicle during the test, to ensure accurate first noise data, and thus to ensure the accuracy of the vehicle's front enclosure sound insulation performance test.

[0061] Step S104: determining whether the front enclosure sound insulation performance of the vehicle is qualified according to the first noise data and the second noise data.

[0062] In one embodiment, determining whether the front sound insulation performance of the vehicle is qualified based on the first noise data and the second noise data includes: performing Fourier transform on the first noise data to obtain first frequency domain data; performing Fourier transform on the second noise data to obtain second frequency domain data; and determining whether the front sound insulation performance of the vehicle is qualified based on the first frequency domain data and the second frequency domain data.

[0063] Exemplarily, taking the second noise data as an example, Fourier transform is performed on the second noise data to obtain the second frequency domain data including:

[0064]

[0065] Among them, F2 is the second frequency domain data, an is the nth noise time domain data in the second noise data N2, N is the total number of noise time domain data of the second noise data N2 (a positive integer), e is the base of the natural logarithm (a mathematical constant), and k is the frequency index (a positive integer).

[0066] The first noise data N1 can be Fourier transformed in the same manner to obtain the corresponding first frequency domain data F1, which will not be described in detail here.

[0067] Specifically, determining whether the front sound insulation performance of the vehicle is qualified based on the first frequency domain data and the second frequency domain data includes: determining whether the absolute value of the difference between the second frequency domain data and the first frequency domain data is greater than a preset sound insulation volume fluctuation threshold; if the absolute value of the difference between the second frequency domain data and the first frequency domain data is greater than the sound insulation volume fluctuation threshold, determining that the front sound insulation performance of the vehicle is unqualified; if the absolute value of the difference between the second frequency domain data and the first frequency domain data is less than or equal to the sound insulation volume fluctuation threshold, determining that the front sound insulation performance of the vehicle is qualified.

[0068] Among them, the absolute value of the difference between the second frequency domain data and the first frequency domain data is the vehicle front enclosure sound insulation volume fluctuation data during the audio file playback. The smaller the fluctuation of the sound insulation volume during the audio playback, the more stable the sound insulation performance of the vehicle front enclosure. The larger the fluctuation of the sound insulation volume during the audio playback, the more stable the sound insulation performance of the vehicle front enclosure. Therefore, whether the sound insulation performance of the vehicle front enclosure is qualified can be determined based on whether the absolute value of the difference between the second frequency domain data and the first frequency domain data is greater than the preset sound insulation volume fluctuation threshold.

[0069] Exemplarily, after Fourier transformation of the first noise data and the second noise data, the obtained first frequency domain data F1 and the second frequency domain data F2 can be displayed on the vehicle computer, and the front wall sound insulation performance of the vehicle is determined to be qualified according to the first frequency domain data F1 and the second frequency domain data F2. When |F2-F1|>F0, it is determined that the front wall sound insulation performance of the vehicle is unqualified; when |F2-F1|≤F0, it is determined that the front wall sound insulation performance of the vehicle is qualified, where F0 is the sound insulation volume fluctuation threshold, and the specific value of the sound insulation volume fluctuation threshold can be set according to demand.

[0070] In another embodiment, in order to facilitate judgment, the frequency domain data can be converted into noise amplitude data, and whether the front sound insulation performance of the vehicle is qualified can be judged based on the noise amplitude data, where the noise amplitude is decibel dB.

[0071] Specifically, the first frequency domain data is converted into first noise amplitude data, and the second frequency domain data is converted into second noise amplitude data; and whether the front enclosure sound insulation performance of the vehicle is qualified is determined based on the first noise amplitude data and the second noise amplitude data.

[0072] Exemplarily, the second frequency domain data is converted into the second noise amplitude data as follows:

[0073] dB2=20log(F2)

[0074] Wherein, dB2 is the second noise amplitude data. The first frequency domain data can be converted in the same manner to obtain the corresponding first noise amplitude data, which will not be described in detail here.

[0075] Specifically, it is determined whether the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is greater than a preset noise amplitude fluctuation threshold; if the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is greater than the preset noise amplitude fluctuation threshold, it is determined that the front wall sound insulation performance of the vehicle is unqualified; if the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is less than or equal to the noise amplitude fluctuation threshold, it is determined that the front wall sound insulation performance of the vehicle is qualified. The specific value of the noise amplitude fluctuation threshold can be set according to demand.

[0076] It is worth noting that the vehicle front enclosure sound insulation performance detection method provided in the present application can be integrated into the vehicle computer, and can be used to perform a whole vehicle front enclosure sound insulation volume test at the design prototype stage, and can also be used to perform a whole vehicle front enclosure sound insulation volume test on the vehicle after the vehicle is assembled off the production line.

[0077] The vehicle front wall sound insulation performance detection method provided in the embodiment of the present application plays a preset audio file through the speaker of the active vehicle sound AVAS system to emit a sound with a specific frequency component, and collects the first noise data during the audio file playback process through the first microphone arranged at the speaker, and collects the vehicle interior noise through the second microphone arranged inside the vehicle to obtain the second noise data, performs spectrum processing on the obtained first noise data and second noise data, and calculates the sound insulation volume data and compares it with the preset sound insulation volume fluctuation threshold to determine whether the vehicle front wall sound insulation performance meets the standard. It realizes efficient and accurate detection of the vehicle front wall sound insulation performance, and uses the active vehicle sound system carried by the vehicle itself to play the audio file for detection, without the need for other sound playback equipment, and the detection cost is low. Detection of the vehicle front wall sound insulation performance can guide whether to further check whether the sound insulation material or assembly status meets the requirements, thereby improving the vehicle development and production efficiency.

[0078] In a second aspect, an embodiment of the present application also provides a vehicle front enclosure sound insulation performance detection device.

[0079] In one embodiment, referring to Figure 2 , Figure 2 This is a functional module diagram of an embodiment of a vehicle front wall sound insulation performance detection device of the present application. Figure 2 As shown, the vehicle front wall sound insulation performance detection device includes:

[0080] a control module for controlling an active vehicle sound system of the vehicle to play a preset audio file;

[0081] A first acquisition module, configured to acquire first noise data detected by a first microphone disposed at a speaker of the active vehicle sound system during playback of the audio file;

[0082] A second acquisition module, which is used to acquire second noise data detected by a second microphone disposed inside the vehicle during the playback of the audio file;

[0083] A determination module is used to determine whether the front wall sound insulation performance of the vehicle is qualified according to the first noise data and the second noise data.

[0084] Furthermore, in one embodiment, the determining module is further configured to:

[0085] Determine whether an absolute value of a difference between the second frequency domain data and the first frequency domain data is greater than a preset sound isolation fluctuation threshold;

[0086] If the absolute value of the difference between the second frequency domain data and the first frequency domain data is greater than the sound insulation volume fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is unqualified;

[0087] If the absolute value of the difference between the second frequency domain data and the first frequency domain data is less than or equal to the sound insulation volume fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is qualified.

[0088] Furthermore, in one embodiment, the determining module is further configured to:

[0089] If the difference between the second frequency domain data and the first frequency domain data is greater than a preset sound insulation volume fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is unqualified;

[0090] If the difference between the second frequency domain data and the first frequency domain data is less than or equal to the sound insulation volume fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is qualified.

[0091] Furthermore, in one embodiment, the determining module is further configured to:

[0092] Determine whether the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is greater than a preset noise amplitude fluctuation threshold;

[0093] If the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is greater than a preset noise amplitude fluctuation threshold, it is determined that the front wall sound insulation performance of the vehicle is unqualified;

[0094] If the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is less than or equal to the noise amplitude fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is qualified.

[0095] Furthermore, in one embodiment, the determining module is further configured to:

[0096] If the difference between the second noise amplitude data and the first noise amplitude data is greater than a preset noise amplitude threshold, it is determined that the front wall sound insulation performance of the vehicle is unqualified;

[0097] If the difference between the second noise amplitude data and the first noise amplitude data is less than or equal to the noise amplitude threshold, it is determined that the front enclosure sound insulation performance of the vehicle is qualified.

[0098] Furthermore, in one embodiment, the control module is also used for:

[0099] Before controlling the active vehicle sound system of the vehicle to play a preset audio file, controlling the hood, sunroof, doors and windows of the vehicle to be in a closed state;

[0100] Controlling the air inlet and outlet of the vehicle to be in a fully open state;

[0101] Controlling the windshield wipers, heating device, fan and air conditioner of the vehicle to stop operating;

[0102] The seat position of the vehicle is controlled to be in a middle position between the horizontal and vertical directions, and the seat back is in a vertical position.

[0103] Among them, the functional implementation of each module in the above-mentioned vehicle front wall sound insulation performance detection device corresponds to the various steps in the above-mentioned vehicle front wall sound insulation performance detection method embodiment, and its functions and implementation processes will not be repeated here one by one.

[0104] On the third aspect, an embodiment of the present application provides a vehicle front panel sound insulation performance testing device, which may be a vehicle controller, an on-board computer, or other device with data processing capabilities.

[0105] Reference Figure 3 , Figure 3 Schematic diagram of the hardware structure of the vehicle front wall sound insulation performance detection device involved in the embodiment of the present application. In the embodiment of the present application, the vehicle front wall sound insulation performance detection device may include a processor, a memory, a communication interface and a communication bus.

[0106] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0107] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the vehicle front wall sound insulation performance testing device, and the interface used to realize the interconnection of the vehicle front wall sound insulation performance testing device with other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display (Display), a keyboard (Keyboard), etc.

[0108] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0109] The processor may be a general-purpose processor, which may call the vehicle enclosure sound insulation performance detection program stored in the memory and execute the vehicle enclosure sound insulation performance detection method provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the vehicle enclosure sound insulation performance detection program is called may refer to the various embodiments of the vehicle enclosure sound insulation performance detection method of the present application, which will not be described in detail here.

[0110] Those skilled in the art will understand that Figure 3 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0111] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.

[0112] The computer-readable storage medium of the present application stores a vehicle front wall sound insulation performance detection program, wherein when the vehicle front wall sound insulation performance detection program is executed by a processor, the steps of the vehicle front wall sound insulation performance detection method as described above are implemented.

[0113] Among them, the method implemented when the vehicle front wall sound insulation performance detection program is executed can refer to the various embodiments of the vehicle front wall sound insulation performance detection method of the present application, and will not be repeated here.

[0114] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0115] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0116] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0117] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0118] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0119] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0120] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for detecting the sound insulation performance of a vehicle's front enclosure, characterized in that: The vehicle front wall sound insulation performance detection method comprises: Controlling the vehicle's active vehicle sound system to play a preset audio file; Acquire first noise data detected by a first microphone disposed at a speaker of the active vehicle sound system during playback of the audio file; Acquire second noise data detected by a second microphone disposed inside the vehicle during playback of the audio file; Whether the sound insulation performance of the front enclosure of the vehicle is qualified is determined according to the first noise data and the second noise data.

2. The vehicle front wall sound insulation performance detection method according to claim 1, characterized in that: Determining whether the front wall sound insulation performance of the vehicle is qualified according to the first noise data and the second noise data includes: Performing Fourier transform on the first noise data to obtain first frequency domain data; Performing Fourier transform on the second noise data to obtain second frequency domain data; Whether the sound insulation performance of the front enclosure of the vehicle is qualified is determined according to the first frequency domain data and the second frequency domain data.

3. The vehicle front wall sound insulation performance detection method according to claim 2, characterized in that: The determining whether the front wall sound insulation performance of the vehicle is qualified according to the first frequency domain data and the second frequency domain data includes: Determine whether an absolute value of a difference between the second frequency domain data and the first frequency domain data is greater than a preset sound isolation fluctuation threshold; If the absolute value of the difference between the second frequency domain data and the first frequency domain data is greater than the sound insulation volume fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is unqualified; If the absolute value of the difference between the second frequency domain data and the first frequency domain data is less than or equal to the sound insulation volume fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is qualified.

4. The vehicle front wall sound insulation performance detection method according to claim 2, characterized in that: Determining whether the front wall sound insulation performance of the vehicle is qualified according to the first noise data and the second noise data also includes: Convert the first frequency domain data into first noise amplitude data, and convert the second frequency domain data into second noise amplitude data; Whether the front wall sound insulation performance of the vehicle is qualified is determined according to the first noise amplitude data and the second noise amplitude data.

5. The vehicle front wall sound insulation performance detection method according to claim 4, characterized in that: Determining whether the front wall sound insulation performance of the vehicle is qualified according to the first noise amplitude data and the second noise amplitude data includes: Determine whether the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is greater than a preset noise amplitude fluctuation threshold; If the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is greater than a preset noise amplitude fluctuation threshold, it is determined that the front wall sound insulation performance of the vehicle is unqualified; If the absolute value of the difference between the second noise amplitude data and the first noise amplitude data is less than or equal to the noise amplitude fluctuation threshold, it is determined that the front enclosure sound insulation performance of the vehicle is qualified.

6. The vehicle front wall sound insulation performance detection method according to claim 1, characterized in that: Before controlling the vehicle's active vehicle sound system to play a preset audio file, it also includes: Controlling the hood, sunroof, doors and windows of the vehicle to be in a closed state; Controlling the air inlet and outlet of the vehicle to be in a fully open state; Controlling the windshield wipers, heating device, fan and air conditioner of the vehicle to stop operating; The seat position of the vehicle is controlled to be in a middle position between the horizontal and vertical directions, and the seat back is in a vertical position.

7. A vehicle front wall sound insulation performance detection device, characterized in that: The vehicle front wall sound insulation performance detection device comprises: a control module for controlling an active vehicle sound system of the vehicle to play a preset audio file; A first acquisition module, configured to acquire first noise data detected by a first microphone disposed at a speaker of the active vehicle sound system during playback of the audio file; A second acquisition module, which is used to acquire second noise data detected by a second microphone disposed inside the vehicle during the playback of the audio file; A determination module is used to determine whether the front wall sound insulation performance of the vehicle is qualified according to the first noise data and the second noise data.

8. The vehicle front wall sound insulation performance detection device according to claim 7, characterized in that: The determining module is also used for: Performing Fourier transform on the first noise data to obtain first frequency domain data; Performing Fourier transform on the second noise data to obtain second frequency domain data; Whether the sound insulation performance of the front enclosure of the vehicle is qualified is determined according to the first frequency domain data and the second frequency domain data.

9. A vehicle front wall sound insulation performance testing device, characterized in that: The vehicle front wall sound insulation performance detection device includes a processor, a memory, and a vehicle front wall sound insulation performance detection program stored in the memory and executable by the processor, wherein when the vehicle front wall sound insulation performance detection program is executed by the processor, the steps of the vehicle front wall sound insulation performance detection method as described in any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a vehicle front wall sound insulation performance detection program, wherein when the vehicle front wall sound insulation performance detection program is executed by the processor, the steps of the vehicle front wall sound insulation performance detection method as described in any one of claims 1 to 6 are implemented.

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