Vehicle air inlet system component transmission loss determination method and device

Abstract

The invention discloses a method and a device for determining transmission loss of components of a vehicle air inlet system. The method comprises the following steps: generating a preset test audio through a loudspeaker module in a first audio transmission pipeline; determining a first parameter expression and a second parameter expression based on a preset test audio; and according to the first parameter expression, the second parameter expression, the inlet pipeline sectional area of the to-be-measured component and the outlet pipeline sectional area of the to-be-measured component, determining a transmission loss value of the to-be-measured component. According to the technical scheme, the preset test audio is generated through the loudspeaker module in the first audio transmission pipeline; determining a first parameter expression and a second parameter expression based on a preset test audio; according to the first parameter expression, the second parameter expression, the inlet pipeline sectional area of the to-be-tested component and the outlet pipeline sectional area of the to-be-tested component, the transmission loss value of the to-be-tested component is determined, transmission loss testing of the commercial vehicle air inlet system is achieved, and the accuracy of the testing result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle testing, and in particular to a method and device for determining transmission loss of vehicle intake system components. Background Art

[0002] With the development of society, people are paying more and more attention to noise control issues, especially in the automotive field, where there are more and more noise problems. In the field of commercial vehicles, intake noise accounts for a large proportion, so it is very necessary to control intake noise during the product development stage.

[0003] The noise evaluation indicators of the intake system usually include transmission loss, sound pressure level difference, sound pressure level, etc. When evaluating the silencing effect of a single silencer element or preliminarily evaluating the silencing performance at the system level, transmission loss is usually used to express it. Transmission loss is the simplest way to evaluate silencing performance. However, compared with passenger cars, the intake system of commercial vehicles is larger and more complex in structure, making it difficult to make a more accurate judgment. Summary of the invention

[0004] The present invention provides a method and device for determining transmission loss of vehicle intake system components, so as to solve the problem that commercial vehicles lack a method for determining transmission loss of intake system components.

[0005] According to one aspect of the present invention, a method for determining transmission loss of a vehicle intake system component is provided, the method comprising:

[0006] Generate a preset test audio through a speaker module in a first audio transmission pipeline, the audio range of the preset test audio is within a preset range, the inlet of the first audio transmission pipeline includes at least one speaker module, and the outlet of the first audio transmission pipeline is connected to the inlet of the component to be tested;

[0007] Based on the preset test audio, determine the first parameter expression and the second parameter expression, the parameter expression is a quadrupole parameter expression, the first parameter expression is obtained by performing a tail-end acoustic test on the component to be tested based on the preset test audio in the first state, the first state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in an open state, and the target audio transmission pipeline is the last second audio transmission pipeline after the at least one second audio transmission pipeline is connected end to end, the second parameter expression is obtained by performing a tail-end acoustic test on the component to be tested based on the preset test audio in the second state, the second state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in a closed state, and the component to be tested is connected to the inlet of the first second audio transmission pipeline after the second audio transmission pipelines are connected end to end;

[0008] The transmission loss value of the component to be measured is determined according to the first parameter expression, the second parameter expression, the inlet pipe cross-sectional area of ​​the component to be measured, and the outlet pipe cross-sectional area of ​​the component to be measured.

[0009] According to another aspect of the present invention, a device for determining transmission loss of a vehicle intake system component is provided, the device comprising:

[0010] A test audio generation module is used to generate a preset test audio through a speaker module in a first audio transmission pipeline, wherein the audio range of the preset test audio is within a preset range, the inlet of the first audio transmission pipeline comprises at least one speaker module, and the outlet of the first audio transmission pipeline is connected to the inlet of the component to be tested;

[0011] An expression determination module is used to determine a first parameter expression and a second parameter expression based on a preset test audio, wherein the parameter expression is a quadrupole parameter expression, wherein the first parameter expression is obtained by performing a tail end acoustic test on the component to be tested based on the preset test audio in a first state, wherein the first state is that the outlet of a target audio transmission pipeline in at least one second audio transmission pipeline is in an open state, and the target audio transmission pipeline is the last second audio transmission pipeline after at least one second audio transmission pipeline is connected end to end, and the second parameter expression is obtained by performing a tail end acoustic test on the component to be tested based on the preset test audio in a second state, wherein the second state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in a closed state, and the component to be tested is connected to the inlet of the first second audio transmission pipeline after each second audio transmission pipeline is connected end to end;

[0012] The transmission loss determination module is used to determine the transmission loss value of the component to be tested according to the first parameter expression, the second parameter expression, the inlet pipe cross-sectional area of ​​the component to be tested, and the outlet pipe cross-sectional area of ​​the component to be tested.

[0013] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0014] at least one processor; and

[0015] a memory communicatively connected to at least one processor; wherein,

[0016] The memory stores a computer program executable by at least one processor, and the computer program is executed by at least one processor so that the at least one processor can execute the method for determining transmission loss of a vehicle intake system component according to any embodiment of the present invention.

[0017] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions for implementing the method for determining transmission loss of vehicle intake system components according to any embodiment of the present invention when executed by a processor.

[0018] The technical solution of the embodiment of the present invention generates a preset test audio through a speaker module in a first audio transmission pipeline; determines a first parameter expression and a second parameter expression based on the preset test audio, thereby obtaining the influence of the target audio transmission pipeline outlet on the component to be tested under different switching states, and can realize the solution of the first parameter expression and the second parameter expression; determines the transmission loss value of the component to be tested according to the first parameter expression, the second parameter expression, the inlet pipeline cross-sectional area of ​​the component to be tested, and the outlet pipeline cross-sectional area of ​​the component to be tested, thereby realizing the accurate solution of the final transmission loss value.

[0019] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A flow chart of a method for determining transmission loss of a vehicle intake system component provided according to a first embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the connection relationship of the test system applicable to the embodiment of the present invention;

[0023] Figure 3 A schematic diagram of connecting a first connecting device applicable to an embodiment of the present invention and a component to be tested;

[0024] Figure 4 A schematic diagram of the installation position of the attraction material applicable to the embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a device for installing an auxiliary attraction material applicable to an embodiment of the present invention;

[0026] Figure 6 A flowchart of another method for determining transmission loss of a vehicle intake system component provided according to a second embodiment of the present invention;

[0027] Figure 7 It is a structural schematic diagram of a device for determining transmission loss of a vehicle intake system component provided according to a third embodiment of the present invention;

[0028] Figure 8 A schematic structural diagram of an electronic device for implementing a method for determining transmission loss of a vehicle intake system component according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations 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 necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] Embodiment 1

[0032] Figure 1 A flow chart of a method for determining transmission loss of vehicle intake system components is provided for the first embodiment of the present invention. This embodiment is applicable to the case of determining transmission loss of components included in the intake system of a commercial vehicle. The method can be performed by a vehicle intake system component transmission loss determination device. The vehicle intake system component transmission loss determination device can be implemented in the form of hardware and / or software. The vehicle intake system component transmission loss determination device can be configured in an electronic device with data processing capabilities. Figure 1 As shown, the method includes:

[0033] S110. Generate a preset test audio through the speaker module in the first audio transmission pipeline. The audio range of the preset test audio is within a preset range. The inlet of the first audio transmission pipeline includes at least one speaker module. The outlet of the first audio transmission pipeline is connected to the inlet of the component to be tested.

[0034] The audio transmission conduit may be an impedance tube. The impedance tube is a straight cylindrical tube with a uniform cross-sectional area, a smooth and rigid tube wall surface, and is sufficiently dense to ensure that it will not be stimulated by sound signals to produce resonance in the working frequency band of the impedance tube. Since the present application is used to determine the transmission loss of commercial vehicles, the inner diameter of the audio transmission conduit can be set according to the different components to be tested in the commercial vehicle. The preset test audio may be the audio used for transmission loss. For ease of understanding, the present application provides an impedance tube with an inner diameter of 100mm, and the preset test audio has an audio range of 50Hz to 1600Hz. It should be understood that the specific values ​​here are used to help readers understand, rather than limiting the specific values. The components to be tested may be components in the air intake system of a commercial vehicle that require transmission loss testing, including but not limited to air intake ducts, air filters, intake pipes, and mufflers.

[0035] See also Figure 2 In the figure, 1 is a speaker module, which is used to play a preset test audio. 3 is a first audio transmission pipeline, 8 is a component to be tested, and the left side of the audio transmission pipeline and the component to be tested are both inlets, and the right side are both outlets.

[0036] When the component to be tested is tested, a preset test audio is generated by the speaker module and enters the inlet of the component to be tested from the outlet of the first audio transmission pipeline.

[0037] S120. Based on a preset test audio, determine a first parameter expression and a second parameter expression, the parameter expression is a quadrupole parameter expression, the first parameter expression is obtained by performing a tail-end acoustic test on the component to be tested based on the preset test audio in the first state, the first state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in an open state, and the target audio transmission pipeline is the last second audio transmission pipeline after at least one second audio transmission pipeline is connected end to end, the second parameter expression is obtained by performing a tail-end acoustic test on the component to be tested based on the preset test audio in the second state, the second state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in a closed state, and the component to be tested is connected to the inlet of the first second audio transmission pipeline after each second audio transmission pipeline is connected end to end.

[0038] Tail-end acoustic testing can be a technical means used in specific fields (such as automobile manufacturing, aerospace, mechanical engineering, etc.) to detect and evaluate the tail-end acoustic characteristics of products or systems during operation. Quadrupole parameters are used to describe and analyze the key characteristic indicators of sound propagation in a medium and through various structures. The target audio transmission pipeline is the second audio transmission pipeline farthest from the component to be tested after the second audio transmission pipelines are connected end to end and connected to the component to be tested.

[0039] See also Figure 2 , Figure 2 16 and 17 are the second audio transmission pipelines, and 16 and 17 are connected end to end according to the relationship between the import and export. Figure 2 There are only two second audio transmission pipelines in the example, so 16 is the target audio transmission pipeline. It should be noted that the number of the second audio transmission pipelines is not fixed and can be adjusted according to actual conditions. Figure 2 4 and 5 in the first audio transmission pipeline are microphone modules, and 11 and 12 in the second audio transmission pipeline are also microphone modules.

[0040] To ensure that the audio transmission pipeline is sufficiently stable during the test, a support can be installed for the audio transmission pipeline, such as Figure 2 2, 6, 10, 13, and 15 in the figure. Microphones 4, 5, 11, and 12 are connected to the data acquisition front end 18 via signal connection lines. Speaker 1 is integrated inside the front end of the front tube 3. The speaker signal emitted by the speaker is generated by the signal generation module integrated in the data acquisition front end 18 and amplified by the power amplifier 19 to generate a steady-state broadband noise signal. The data acquisition front end 18 is also connected to a computer to transmit the sound signal measured by the microphone to the computer for data processing. 7, 8, and 14 are bayonet ports for connecting audio transmission pipelines.

[0041] When generating the first parameter expression, the outlet of the target audio transmission pipeline is opened, and the end-end acoustic test is performed on the component under test, and the first parameter expression is generated according to the test result of the end-end acoustic test. When generating the second parameter expression, the outlet of the target audio transmission pipeline is closed, and the end-end acoustic test is performed on the component under test, and the second parameter expression is generated according to the test result of the end-end acoustic test.

[0042] By determining the first parameter expression and the second parameter expression based on the preset test audio, the influence of the target audio transmission pipeline outlet on the component to be tested under different switching states is obtained, and the first parameter expression and the second parameter expression can be solved.

[0043] Optionally, a first connecting device is generated based on three-dimensional printing technology, and the outlet of the first audio transmission pipe is connected to the inlet of the component to be tested through the first connecting device.

[0044] See also Figure 3 Since the inner diameters of different components to be tested may be different, if an audio transmission pipe with a suitable inner diameter needs to be reselected every time a new component to be tested is tested, the testing process will be too cumbersome, thereby affecting the testing efficiency.

[0045] For this purpose, a first connection device can be generated by three-dimensional printing technology, so that the component to be tested can be connected to the first audio transmission pipe without changing the inner diameter of the first audio transmission pipe. Similarly, a second connection device can be generated, so that the component to be tested can be connected to the second audio transmission pipe without changing the inner diameter of the second audio transmission pipe. Figure 3 20 is a first connecting device, 22 is a second connecting device, and 21 is a component to be tested.

[0046] In an optional solution, at least one microphone module in the first audio transmission pipeline and at least one microphone module in the second audio transmission pipeline to which the component to be tested is directly connected;

[0047] Accordingly, the process of determining the first parameter expression may include steps A1-A4:

[0048] Step A1: adjust the outlet of the target audio transmission pipeline to an open state.

[0049] Step A2: determining a first audio sound pressure and a first audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested.

[0050] Step A3: determining a second audio sound pressure and a second audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested.

[0051] Step A4: Determine a first parameter expression based on the first audio sound pressure, the first audio velocity amplitude, the second audio sound pressure, and the second audio velocity amplitude.

[0052] Adjust the outlet of the target audio transmission pipeline to an open state. If the first audio transmission pipeline has a microphone module, and the second audio transmission pipeline directly connected to the component to be tested includes a microphone module, the first audio sound pressure and the first audio vibration velocity amplitude are determined directly through the microphone module in the second audio transmission pipeline directly connected to the component to be tested, and the second audio sound pressure and the second audio vibration velocity amplitude are determined according to the microphone module in the second audio transmission pipeline directly connected to the component to be tested.

[0053] At this time, the first parameter expression may be determined according to the first audio sound pressure, the first audio velocity amplitude, the second audio sound pressure, and the second audio velocity amplitude.

[0054] The first parameter expression is as follows:

[0055]

[0056] Among them, p1 is the first audio sound pressure; p2 is the second audio sound pressure; v1 is the first audio velocity amplitude; v2 is the first audio velocity amplitude; A, B, C, and D are respectively systematic quadrupole parameters.

[0057] If the first audio transmission pipeline has at least two microphone modules and the second audio transmission pipeline directly connected to the component to be tested has at least two microphone modules, the first parameter expression can be determined based on the data obtained by each microphone module.

[0058] by Figure 2 Take the example that the first audio transmission pipeline has two microphone modules and the second audio transmission pipeline directly connected to the component to be tested has two microphone modules.

[0059] The first sub-parameter expression is generated by the above method through the data collected by the microphone module 4 and the microphone module 5. The first sub-parameter expression is shown as follows:

[0060]

[0061] Wherein, p4 is the audio sound pressure collected by microphone module 4; p5 is the audio sound pressure collected by microphone module 5; v4 is the audio vibration amplitude collected by microphone module 4; v5 is the audio vibration amplitude collected by microphone module 5; A 45 , B 45 , C 45 , D 45 are the quadrupole parameters between microphone module 4 and microphone module 5 respectively.

[0062] Similarly, the second sub-parameter expression is obtained through the microphone module 11 and the microphone module 12. The second sub-parameter expression is shown as follows:

[0063]

[0064] Among them, p 11 is the audio sound pressure collected by the microphone module 11; p 12 is the audio sound pressure collected by the microphone module 12; 11 v is the audio velocity amplitude collected by the microphone module 11; 12 A is the audio velocity amplitude collected by the microphone module 12; 1112 , B 1112 , C 1112 , D 1112 are the quadrupole parameters between the microphone module 11 and the microphone module 12 respectively.

[0065] Similarly, the second sub-parameter expression of the microphone module 5 and the microphone module 11 is as follows:

[0066]

[0067] Among them, A 511 , B 511 , C 511 , D 511 are the quadrupole parameters between the microphone module 5 and the microphone module 11 respectively.

[0068] The first sub-parameter expression, the second sub-parameter expression and the third sub-parameter expression are all taken as the first parameter expression.

[0069] In an optional solution, at least one microphone module in the first audio transmission pipeline and at least one microphone module in the second audio transmission pipeline to which the component to be tested is directly connected;

[0070] Accordingly, the process of determining the second parameter expression may include steps B1 to B4:

[0071] Step B1: adjust the outlet of the target audio transmission pipeline to a closed state.

[0072] Step B2: determining a third audio sound pressure and a third audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested.

[0073] Step B3: determining a fourth audio sound pressure and a fourth audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested.

[0074] Step B4: Determine a second parameter expression based on the third audio sound pressure, the third audio velocity amplitude, the fourth audio sound pressure, and the fourth audio velocity amplitude.

[0075] Except for adjusting the outlet of the target audio transmission pipeline to a closed state, the process of determining the first parameter expression is not elaborated in this application.

[0076] Optionally, the outlet of the target audio transmission pipeline is adjusted to a closed state, including:

[0077] Install sound-absorbing cotton inside the outlet of the target audio transmission pipeline.

[0078] See also Figure 4 In order to ensure that the closed state of the target audio transmission pipeline is sufficiently stable when the outlet is adjusted to the closed state, sound-absorbing cotton will be installed inside the outlet of the target audio transmission pipeline, that is, Figure 4 of 23.

[0079] See also Figure 2 as well as Figure 5In order to ensure that the target audio transmission pipeline can be installed with sound-absorbing materials of different thicknesses, a fixed plate 1601 can be installed on the target audio transmission pipeline 16, and the threaded positioning rod 1602 can be rotated by rotating the knob 1603 to push the fixed plate 1601 to move, thereby achieving the purpose of being able to install sound-absorbing materials of different thicknesses.

[0080] S130, determining a transmission loss value of the component to be measured according to the first parameter expression, the second parameter expression, the inlet pipe cross-sectional area of ​​the component to be measured, and the outlet pipe cross-sectional area of ​​the component to be measured.

[0081] After obtaining the first parameter expression and the second parameter expression, the first parameter expression and the second parameter expression are combined, and the transmission loss value of the component to be measured is determined based on the combined result and the inlet pipe cross-sectional area of ​​the component to be measured and the outlet pipe cross-sectional area of ​​the component to be measured.

[0082] According to the technical solution of the embodiment of the present invention, a preset test audio is generated through a speaker module in a first audio transmission pipeline; based on the preset test audio, a first parameter expression and a second parameter expression are determined, so as to obtain the influence of the target audio transmission pipeline outlet on the component to be tested under different switching states, and the first parameter expression and the second parameter expression can be solved; by determining the transmission loss value of the component to be tested according to the first parameter expression, the second parameter expression, the inlet pipeline cross-sectional area of ​​the component to be tested, and the outlet pipeline cross-sectional area of ​​the component to be tested, the final transmission loss value can be accurately solved.

[0083] Embodiment 2

[0084] Figure 6 The present invention provides another flow chart of a method for determining the transmission loss of a vehicle intake system component. Based on the above embodiment, this embodiment further optimizes the process of determining the transmission loss value of the component to be tested according to the first parameter expression, the second parameter expression, the inlet pipe cross-sectional area of ​​the component to be tested, and the outlet pipe cross-sectional area of ​​the component to be tested in the above embodiment. This embodiment can be combined with various optional solutions in one or more of the above embodiments. Figure 6 As shown, the method for determining the transmission loss of a vehicle intake system component of this embodiment may include the following steps:

[0085] S210. Generate a preset test audio through the speaker module in the first audio transmission pipeline. The audio range of the preset test audio is within a preset range. The inlet of the first audio transmission pipeline includes at least one speaker module. The outlet of the first audio transmission pipeline is connected to the inlet of the component to be tested.

[0086] S220. Based on a preset test audio, determine a first parameter expression and a second parameter expression, the parameter expression being a quadrupole parameter expression, the first parameter expression being obtained by performing a tail-end acoustic test on the component to be tested based on the preset test audio in the first state, the first state being that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in an open state, and the target audio transmission pipeline is the last second audio transmission pipeline after at least one second audio transmission pipeline is connected end to end, the second parameter expression being obtained by performing a tail-end acoustic test on the component to be tested based on the preset test audio in the second state, the second state being that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in a closed state, and the component to be tested is connected to the inlet of the first second audio transmission pipeline after each second audio transmission pipeline is connected end to end.

[0087] S230, combining the first parameter expression with the second parameter expression to obtain a transmission loss expression of the component to be tested.

[0088] S240 , determining a transmission loss value of the component to be tested based on a transmission loss expression, an inlet pipe cross-sectional area of ​​the component to be tested, and an outlet pipe cross-sectional area of ​​the component to be tested.

[0089] The first parameter expression and the second parameter expression are combined to obtain the transmission loss expression of the component to be tested, as shown below:

[0090]

[0091] Where, S1 represents the inlet pipe cross-sectional area of ​​the component to be tested; S2 represents the outlet pipe cross-sectional area of ​​the component to be tested; TL represents the transmission loss value.

[0092] By substituting the inlet pipe cross-sectional area of ​​the component to be tested and the outlet pipe cross-sectional area of ​​the component to be tested into the expression, the final transmission loss value of the component to be tested can be obtained.

[0093] By combining the first parameter expression with the second parameter expression, the transmission loss expression of the component to be measured is obtained. Based on the transmission loss expression, the inlet pipe cross-sectional area of ​​the component to be measured, and the outlet pipe cross-sectional area of ​​the component to be measured, the transmission loss value of the component to be measured is determined, so that technical personnel in this field can avoid repeated derivation of some steps when using this method, thereby improving the efficiency of determining the transmission loss value without affecting the accuracy of the transmission loss value.

[0094] According to the technical solution of the embodiment of the present invention, the transmission loss expression of the component to be measured is obtained by combining the first parameter expression with the second parameter expression, and the transmission loss value of the component to be measured is determined based on the transmission loss expression, the cross-sectional area of ​​the inlet pipe of the component to be measured, and the cross-sectional area of ​​the outlet pipe of the component to be measured. When using this method, those skilled in the art can avoid repeated derivation of some steps, thereby improving the efficiency of determining the transmission loss value without affecting the accuracy of the transmission loss value.

[0095] Embodiment 3

[0096] Figure 7 The present invention provides a structural block diagram of a vehicle air intake system component transmission loss determination device. This embodiment can be applied to the situation where the transmission loss of components included in the commercial vehicle air intake system is determined. The vehicle air intake system component transmission loss determination device can be implemented in the form of hardware and / or software, and the vehicle air intake system component transmission loss determination device can be configured in an electronic device with data processing capabilities. Figure 7 As shown, the vehicle intake system component transmission loss determination device of this embodiment may include: a test audio generation module 310, an expression determination module 320 and a transmission loss determination module 330. Among them:

[0097] The test audio generation module 310 is used to generate a preset test audio through a speaker module in a first audio transmission pipeline, wherein the audio range of the preset test audio is within a preset range, the inlet of the first audio transmission pipeline comprises at least one speaker module, and the outlet of the first audio transmission pipeline is connected to the inlet of the component to be tested;

[0098] An expression determination module 320 is used to determine a first parameter expression and a second parameter expression based on a preset test audio, wherein the parameter expression is a quadrupole parameter expression, wherein the first parameter expression is obtained by performing a tail end acoustic test on the component to be tested based on the preset test audio in the first state, wherein the first state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in an open state, and the target audio transmission pipeline is the last second audio transmission pipeline after at least one second audio transmission pipeline is connected end to end, and the second parameter expression is obtained by performing a tail end acoustic test on the component to be tested based on the preset test audio in the second state, wherein the second state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in a closed state, and the component to be tested is connected to the inlet of the first second audio transmission pipeline after each second audio transmission pipeline is connected end to end;

[0099] The transmission loss determination module 330 is used to determine the transmission loss value of the component to be tested according to the first parameter expression, the second parameter expression, the inlet pipe cross-sectional area of ​​the component to be tested, and the outlet pipe cross-sectional area of ​​the component to be tested.

[0100] On the basis of the above embodiment, optionally, at least one microphone module in the first audio transmission pipeline and at least one microphone module in the second audio transmission pipeline to which the component to be tested is directly connected;

[0101] Accordingly, the expression determination module 320 includes:

[0102] Adjust the export of the target audio transmission pipeline to the open state;

[0103] Determine the first audio sound pressure and the first audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested;

[0104] Determine a second audio sound pressure and a second audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested;

[0105] A first parameter expression is determined based on the first audio sound pressure, the first audio velocity amplitude, the second audio sound pressure, and the second audio velocity amplitude.

[0106] On the basis of the above embodiment, optionally, at least one microphone module in the first audio transmission pipeline and at least one microphone module in the second audio transmission pipeline to which the component to be tested is directly connected;

[0107] Accordingly, the expression determination module 320 includes:

[0108] Adjust the export of the target audio transmission pipeline to a closed state;

[0109] Determine a third audio sound pressure and a third audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested;

[0110] Determine a fourth audio sound pressure and a fourth audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested;

[0111] A second parameter expression is determined based on the third audio sound pressure, the third audio velocity amplitude, the fourth audio sound pressure, and the fourth audio velocity amplitude.

[0112] Based on the above embodiment, optionally, the transmission loss determination module 330 includes:

[0113] The first parameter expression and the second parameter expression are combined to obtain a transmission loss expression of the component to be tested;

[0114] The transmission loss value of the component to be tested is determined based on the transmission loss expression, the inlet pipe cross-sectional area of ​​the component to be tested, and the outlet pipe cross-sectional area of ​​the component to be tested.

[0115] Based on the above embodiment, optionally, adjusting the outlet of the target audio transmission pipeline to a closed state includes:

[0116] In the second audio transmission pipe connected to the component to be tested, sound-absorbing cotton is installed inside the outlet of the last second audio transmission pipe.

[0117] On the basis of the above embodiment, optionally, a first connecting device is generated based on three-dimensional printing technology, and the outlet of the first audio transmission pipe is connected to the inlet of the component to be tested through the first connecting device.

[0118] The transmission loss determination device for vehicle intake system components provided in the embodiment of the present invention can execute the transmission loss determination method for vehicle intake system components provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0119] Embodiment 4

[0120] Figure 8 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0121] like Figure 8 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0122] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0123] The processor 11 may be a variety of general and / or dedicated processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a method for determining transmission loss of a vehicle intake system component.

[0124] In some embodiments, the vehicle intake system component transmission loss determination method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the vehicle intake system component transmission loss determination method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the vehicle intake system component transmission loss determination method in any other appropriate manner (e.g., by means of firmware).

[0125] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0126] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0127] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0128] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0129] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0130] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0131] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0132] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining transmission loss of vehicle intake system components, characterized in that: include: Generate a preset test audio through a speaker module in a first audio transmission pipeline, wherein the audio range of the preset test audio is within a preset range, the inlet of the first audio transmission pipeline comprises at least one speaker module, and the outlet of the first audio transmission pipeline is connected to the inlet of the component to be tested; Based on a preset test audio, determine a first parameter expression and a second parameter expression, the parameter expression is a quadrupole parameter expression, the first parameter expression is obtained by performing a tail end acoustic test on the component to be tested based on the preset test audio in the first state, the first state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in an open state, and the target audio transmission pipeline is the last second audio transmission pipeline after at least one second audio transmission pipeline is connected end to end, the second parameter expression is obtained by performing a tail end acoustic test on the component to be tested based on the preset test audio in the second state, the second state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in a closed state, and the component to be tested is connected to the inlet of the first second audio transmission pipeline after each second audio transmission pipeline is connected end to end; The transmission loss value of the component to be measured is determined according to the first parameter expression, the second parameter expression, the inlet pipe cross-sectional area of ​​the component to be measured, and the outlet pipe cross-sectional area of ​​the component to be measured.

2. The method according to claim 1, characterized in that at least one microphone module in the first audio transmission pipeline, and at least one microphone module in the second audio transmission pipeline to which the component to be tested is directly connected; Accordingly, the process of determining the first parameter expression includes: Adjust the export of the target audio transmission pipeline to the open state; Determine a first audio sound pressure and a first audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested; Determine a second audio sound pressure and a second audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested; The first parameter expression is determined based on the first audio sound pressure, the first audio velocity amplitude, the second audio sound pressure, and the second audio velocity amplitude.

3. The method according to claim 1, characterized in that at least one microphone module in the first audio transmission pipeline, and at least one microphone module in the second audio transmission pipeline to which the component to be tested is directly connected; Accordingly, the process of determining the second parameter expression includes: Adjust the export of the target audio transmission pipeline to a closed state; Determining a third audio sound pressure and a third audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested; Determine a fourth audio sound pressure and a fourth audio vibration velocity amplitude according to at least one microphone module in a second audio transmission pipeline directly connected to the component to be tested; The second parameter expression is determined based on the third audio sound pressure, the third audio velocity amplitude, the fourth audio sound pressure, and the fourth audio velocity amplitude.

4. The method according to claim 1, characterized in that Determining the transmission loss value of the component to be measured according to the first parameter expression, the second parameter expression, the inlet pipe cross-sectional area of ​​the component to be measured, and the outlet pipe cross-sectional area of ​​the component to be measured includes: The first parameter expression and the second parameter expression are combined to obtain a transmission loss expression of the component to be tested; The transmission loss value of the component to be tested is determined based on the transmission loss expression, the inlet pipe cross-sectional area of ​​the component to be tested, and the outlet pipe cross-sectional area of ​​the component to be tested.

5. The method according to claim 3, characterized in that: Adjust the export of the target audio transmission pipeline to the closed state, including: In the second audio transmission pipe connected to the component to be tested, sound-absorbing cotton is installed inside the outlet of the last second audio transmission pipe.

6. The method according to claim 1, characterized in that A first connecting device is generated based on three-dimensional printing technology, and the outlet of the first audio transmission pipe is connected to the inlet of the component to be tested through the first connecting device.

7. A device for determining transmission loss of vehicle intake system components, characterized in that: include: A test audio generation module, used to generate a preset test audio through a speaker module in a first audio transmission pipeline, wherein the audio range of the preset test audio is within a preset range, the inlet of the first audio transmission pipeline comprises at least one speaker module, and the outlet of the first audio transmission pipeline is connected to the inlet of the component to be tested; An expression determination module, used to determine a first parameter expression and a second parameter expression based on a preset test audio, wherein the parameter expression is a quadrupole parameter expression, wherein the first parameter expression is obtained by performing a tail end acoustic test on the component to be tested based on the preset test audio in a first state, wherein the first state is that the outlet of a target audio transmission pipeline in at least one second audio transmission pipeline is in an open state, and the target audio transmission pipeline is the last second audio transmission pipeline after at least one second audio transmission pipeline is connected end to end, and the second parameter expression is obtained by performing a tail end acoustic test on the component to be tested based on the preset test audio in a second state, wherein the second state is that the outlet of the target audio transmission pipeline in at least one second audio transmission pipeline is in a closed state, and the component to be tested is connected to the inlet of the first second audio transmission pipeline after each second audio transmission pipeline is connected end to end; The transmission loss determination module is used to determine the transmission loss value of the component to be tested according to the first parameter expression, the second parameter expression, the inlet pipe cross-sectional area of ​​the component to be tested, and the outlet pipe cross-sectional area of ​​the component to be tested.

8. The device according to claim 7, characterized in that The transmission loss determination module is specifically used for: The first parameter expression and the second parameter expression are combined to obtain a transmission loss expression of the component to be tested; The transmission loss value of the component to be tested is determined based on the transmission loss expression, the inlet pipe cross-sectional area of ​​the component to be tested, and the outlet pipe cross-sectional area of ​​the component to be tested.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the vehicle intake system component transmission loss determination method according to any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the vehicle intake system component transmission loss determination method according to any one of claims 1-6 when executed.

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