Jet flow noise reduction method, device and equipment for aerodynamic noise of commercial vehicle and storage medium

Abstract

The invention discloses a jet flow noise reduction method, device and equipment for aerodynamic noise of a commercial vehicle and a storage medium, and belongs to the technical field of aerodynamic noiss.The method comprises the steps that the key noise value of the surface of a key area of the commercial vehicle and the human ear noise value in a cabin of the commercial vehicle in the running process of the commercial vehicle are obtained; according to the key noise value, the human ear noise value, the noise threshold value and the jet flow limiting rule, whether jet flow operation is executed or not is determined; under the condition that jet operation is determined to be executed, determining an actual jet working condition according to the key noise value and the human ear noise value on the basis of a corresponding relation between a candidate noise area and a candidate jet working condition in a jet working condition database; and jet operation is executed according to the actual jet working condition, so that the noise reduction purpose is achieved. According to the invention, the aerodynamic noise of the key area of the commercial vehicle is reduced, the noise in the cab of the commercial vehicle is reduced, the riding environment of the commercial vehicle is improved, the riding comfort of the commercial vehicle is improved, and the driving comfort of a driver is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aerodynamic noise, and in particular to a method, device, equipment and storage medium for reducing aerodynamic noise of a commercial vehicle. Background Art

[0002] The noise generated by vehicles during driving mainly includes powertrain noise, tire / road noise and aerodynamic noise. As commercial vehicles are often driven at high speeds, aerodynamic noise issues have gradually become prominent and have become the main noise source.

[0003] Existing aerodynamic noise control methods (such as sound wave inversion noise reduction method and high-speed jet noise reduction method, etc.) cannot be well applied to commercial vehicles. Therefore, how to control the aerodynamic noise of commercial vehicles has become a current hot and difficult issue. Summary of the invention

[0004] The present invention provides a method, device, equipment and storage medium for reducing aerodynamic noise of commercial vehicles by jet flow, so as to reduce aerodynamic noise in key areas of commercial vehicles, reduce noise in the cab of commercial vehicles, improve riding comfort of commercial vehicles, and improve driving comfort of drivers.

[0005] According to one aspect of the present invention, a method for reducing aerodynamic noise of a commercial vehicle by jet flow is provided, the method comprising:

[0006] Obtain the key noise values ​​of the surface of key areas of the commercial vehicle and the human ear noise values ​​in the cabin of the commercial vehicle during driving;

[0007] Determine whether to perform jet operation according to the key noise value, the human ear noise value, the noise threshold and the jet restriction rule;

[0008] In the case of determining to perform the jet operation, based on the correspondence between the candidate noise areas and the candidate jet conditions in the jet condition database, the actual jet condition is determined according to the key noise value and the human ear noise value;

[0009] According to the actual jet working conditions, the jet operation is performed to achieve the purpose of noise reduction.

[0010] According to another aspect of the present invention, a commercial vehicle aerodynamic noise jet noise reduction device is provided, the device comprising:

[0011] A noise value acquisition module, used to acquire key noise values ​​on the surface of key areas of the commercial vehicle and human ear noise values ​​in the cabin of the commercial vehicle during driving;

[0012] A jet operation judgment module, used to determine whether to perform the jet operation according to the key noise value, the human ear noise value, the noise threshold and the jet restriction rule;

[0013] An actual jet working condition determination module is used to determine the actual jet working condition based on the correspondence between the candidate noise area and the candidate jet working condition in the jet working condition database, according to the key noise value and the human ear noise value, when it is determined that the jet operation is to be performed;

[0014] The jet operation execution module is used to execute the jet operation according to the actual jet working conditions to achieve the purpose of noise reduction.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by at least one processor. The computer program is executed by at least one processor so that the at least one processor can execute the commercial vehicle aerodynamic noise jet noise reduction method according to any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the commercial vehicle aerodynamic noise jet noise reduction method according to any embodiment of the present invention when executed.

[0020] According to another aspect of the present invention, a computer program product is provided, including a computer program, which, when executed by a processor, implements the commercial vehicle aerodynamic noise jet noise reduction method according to any embodiment of the present invention.

[0021] The technical solution of the embodiment of the present invention is to obtain the key noise value of the surface of the key area of ​​the commercial vehicle during the driving process of the commercial vehicle and the human ear noise value in the cabin of the commercial vehicle; determine whether to perform the jet operation according to the key noise value, the human ear noise value, the noise threshold and the jet restriction rule; in the case of determining to perform the jet operation, based on the correspondence between the candidate noise area and the candidate jet condition in the jet condition database, determine the actual jet condition according to the key noise value and the human ear noise value; and perform the jet operation according to the actual jet condition to achieve the purpose of noise reduction. The above technical solution determines the actual jet condition by analyzing the key noise value of the surface of the key area of ​​the commercial vehicle and the human ear noise value in the cabin of the commercial vehicle; and performs the jet operation according to the actual jet condition, so as to achieve the disturbance intervention of the airflow at the key area of ​​the commercial vehicle, reduce the pressure at the key area of ​​the commercial vehicle, thereby reducing the aerodynamic noise in the key area of ​​the commercial vehicle, reducing the noise in the cab of the commercial vehicle, improving the riding environment of the commercial vehicle, improving the riding comfort of the commercial vehicle, and improving the driving comfort of the driver.

[0022] 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

[0023] 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.

[0024] Figure 1A It is a layout diagram of the jet devices on the A-pillars on both sides of the cab of the commercial vehicle involved in the present invention;

[0025] Figure 1B It is a layout diagram of the jet device on the inner mirror shell and the base of the left rearview mirror of the main driver of the commercial vehicle involved in the present invention;

[0026] Figure 1C It is a layout diagram of a jet device on the inner mirror housing of the right side rearview mirror of the co-driver of a commercial vehicle involved in the present invention;

[0027] Figure 1D It is a layout diagram of a jet device on a base of a passenger right side rearview mirror of a commercial vehicle involved in the present invention;

[0028] Figure 1E It is a layout diagram of a jet device on a base of a blind spot mirror of a commercial vehicle involved in the present invention;

[0029] Figure 1F is a flow chart of a commercial vehicle aerodynamic noise jet noise reduction method provided according to Embodiment 1 of the present invention;

[0030] Figure 1G is a spectrum curve diagram of the total sound pressure level of noise at the human ear in the cabin of a commercial vehicle before and after the jet operation is performed according to the first embodiment of the present invention;

[0031] Figure 2 is a flow chart of a commercial vehicle aerodynamic noise jet noise reduction method provided according to Embodiment 2 of the present invention;

[0032] Figure 3 is a schematic diagram of the structure of a pneumatic noise jet noise reduction device for commercial vehicles provided according to Embodiment 3 of the present invention;

[0033] Figure 4 It is a structural schematic diagram of an electronic device for implementing the commercial vehicle aerodynamic noise jet noise reduction method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] 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.

[0035] It should be noted that the terms "target", "candidate", "first" and "second" 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 interchangeable 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 thereof 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 that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] In addition, it should be noted that the collection, storage, use, processing, transmission, provision and disclosure of noise thresholds, jet restriction rules and jet operating condition databases involved in the technical solution of the present invention are in compliance with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0037] It should be noted that the jet device can be arranged at any position of the commercial vehicle. For example, the jet device can be installed on the A-pillar, rearview mirror housing and base of the commercial vehicle, and can also be installed on commercial vehicle exterior accessories such as sun visors and air deflectors. Among them, commercial vehicle exterior accessories refer to various components and devices installed on the outside of the commercial vehicle for decoration, protection, enhancement of functions or enhancement of the overall appearance of the vehicle. For ease of understanding, a commercial vehicle jet device layout scheme involved in the present invention is first introduced. Specifically, in order to alleviate the airflow between the A-pillar and the rearview mirror of the commercial vehicle, see Figure 1A , a jet device 11 is arranged on the A-pillar 10 on both sides of the commercial vehicle cab; in order to intervene in the airflow in the side window area of ​​the commercial vehicle, refer to Figure 1B , a left rearview mirror jet device 21 is arranged on the inner mirror shell of the left rearview mirror 20 of the main driver of the commercial vehicle; in order to intervene in the airflow of the commercial vehicle exterior accessories such as the rear corner of the sunshade or the antenna on the commercial vehicle, so that the airflow is away from the side window and the top cover area, reference Figure 1B, a jet device 31 is arranged on the base 30 of the left rearview mirror 20 of the main driver; in order to intervene in the airflow turning area of ​​the front windshield of the commercial vehicle and reduce the surface pressure of the front windshield of the commercial vehicle, refer to Figure 1B , a base front jet device 32 is arranged on the base 30 of the left rearview mirror 20 of the main driver; in addition, referring to Figure 1C , a right rearview mirror jet device 41 is arranged on the inner mirror housing of the right rearview mirror 40 of the co-driver of the commercial vehicle; Figure 1D , a jet device 51 is arranged on the base 50 of the right rearview mirror 40 of the co-pilot; in order to improve the mutual influence of the airflow between the blind mirror and the sunshade on the commercial vehicle, refer to Figure 1E A fluidic device 61 is arranged on the base of the blind spot mirror 60 of the commercial vehicle.

[0038] Embodiment 1

[0039] Figure 1F This is a flow chart of a commercial vehicle pneumatic noise jet noise reduction method provided in the first embodiment of the present invention. This embodiment can be applied to the case of pneumatic noise reduction of commercial vehicles during driving. The method can be performed by a commercial vehicle pneumatic noise jet noise reduction device, which can be implemented in the form of hardware and / or software and can be configured in an electronic device. Figure 1F As shown, the method includes:

[0040] S101. Acquire key noise values ​​on the surface of key areas of the commercial vehicle and human ear noise values ​​in the cabin of the commercial vehicle during driving of the commercial vehicle.

[0041] Among them, the key area of ​​a commercial vehicle refers to the area on the commercial vehicle that is prone to aerodynamic noise; optionally, the key area of ​​a commercial vehicle includes but is not limited to the rearview mirror area, the side window area, the front lower view mirror area, the front windshield area, the sun visor area and the roof area. The key noise value refers to the noise value generated at the key area of ​​the commercial vehicle during the driving of the commercial vehicle; optionally, the key noise value includes but is not limited to the first key noise value of the rearview mirror surface, the second key noise value of the side window surface, the third key noise value of the front lower view mirror surface, the fourth key noise value of the front windshield surface, the fifth key noise value of the sun visor surface, and the sixth key noise value of the roof surface. The human ear noise value refers to the noise value felt by the human ear in the cabin of the commercial vehicle during the driving of the commercial vehicle; optionally, the key noise value can be specifically expressed as a pressure value, and the human ear noise value can be specifically expressed as a sound pressure value.

[0042] Specifically, the key noise values ​​on the surface of key areas of the commercial vehicle during driving can be obtained through pressure pulsation sensors installed in key areas of the commercial vehicle, and the human ear noise values ​​in the cabin of the commercial vehicle can be obtained through sound pressure sensors installed in the cabin of the commercial vehicle.

[0043] S102: Determine whether to perform a jet operation according to a key noise value, a human ear noise value, a noise threshold, and a jet restriction rule.

[0044] The noise threshold can be preset according to actual business needs or the experience of those skilled in the art, and the embodiments of the present invention do not specifically limit it. The jet restriction rule refers to the rule for restricting the jet operation during the driving of the commercial vehicle; optionally, the jet restriction rule can be preset according to experimental experience, for example, the jet restriction rule can be: if the current speed of the commercial vehicle is greater than the preset speed, the jet operation will not be performed, and for another example, the jet restriction rule can be: no jet operation will be performed in extremely bad weather (for example, strong winds, heavy rains, and heavy snow).

[0045] Specifically, if the critical noise value is greater than the noise threshold and the human ear noise value is greater than the noise threshold, the current weather information and the current vehicle speed of the commercial vehicle are obtained; it is detected whether any one of the current vehicle speed and the current weather information meets the jet restriction rule; if so, the jet operation is not performed; otherwise, the jet operation is performed.

[0046] The current weather information refers to the weather information when the critical noise value is greater than the noise threshold and the human ear noise value is greater than the noise threshold. The current vehicle speed refers to the speed of the commercial vehicle when the critical noise value is greater than the noise threshold and the human ear noise value is greater than the noise threshold.

[0047] More specifically, when the critical noise value is greater than the noise threshold and the human ear noise value is greater than the noise threshold, the current weather information is obtained through the meteorological equipment configured on the commercial vehicle, and the current vehicle speed of the commercial vehicle is obtained through the speed sensor on the commercial vehicle; when it is detected that the current vehicle speed meets the jet restriction rules, the jet operation is not performed; when it is detected that the current weather information meets the jet restriction rules, the jet operation is not performed; when it is detected that both the current vehicle speed and the current weather information meet the jet restriction rules, the jet operation is not performed; when it is detected that neither the current vehicle speed nor the current weather information meets the jet restriction rules, the jet operation is performed.

[0048] Optionally, when the critical noise value is less than or equal to the noise threshold, the jet operation is not performed; when the critical noise value is greater than the noise threshold but the human ear noise value is less than or equal to the noise threshold, the jet operation is not performed.

[0049] It can be understood that when the critical noise value and the human ear noise value are both greater than the noise threshold, obtaining the current weather information and the current vehicle speed of the commercial vehicle, and performing the jet operation when it is detected that the current vehicle speed and the current weather information do not meet the jet restriction rules, can reduce unnecessary jet operations during the driving of the commercial vehicle and save energy.

[0050] S103. When it is determined to perform the jet operation, based on the correspondence between the candidate noise areas and the candidate jet conditions in the jet condition database, and according to the key noise value and the human ear noise value, determine the actual jet condition.

[0051] Among them, the jet condition database refers to a database for storing jet conditions; optionally, the jet conditions in the jet condition database can be pre-set through simulation experiments, and the embodiments of the present invention do not specifically limit it. The jet condition refers to a working condition in which a jet operation is performed on a commercial vehicle during driving; optionally, the jet condition includes a jet position, a jet speed and a jet direction. Among them, the jet position refers to the position on the commercial vehicle that sprays the airflow, that is, the jet device on the commercial vehicle that sprays the airflow. The jet speed refers to the speed of the jet device on the commercial vehicle that sprays the airflow. The jet direction refers to the direction in which the jet device on the commercial vehicle sprays the airflow.

[0052] Among them, the candidate noise area refers to the noise area stored in the jet condition database; optionally, the candidate noise area can be pre-set based on experimental experience, and the embodiment of the present invention does not specifically limit it. The candidate jet condition refers to the jet condition stored in the jet condition database. It should be noted that one candidate noise area corresponds to one candidate jet condition. The actual jet condition refers to the jet condition actually used to guide the jet operation; optionally, the actual jet condition includes the actual jet position, the actual jet velocity and the actual jet direction.

[0053] Specifically, when it is determined to perform the jet operation, based on the correspondence between the candidate noise area and the candidate jet working condition in the jet working condition database, the key noise value and the human ear noise value are input into the jet noise reduction simulation analysis model, and after being processed by the jet noise reduction simulation analysis model, the actual jet working condition is obtained. The jet noise reduction simulation analysis model can be preset according to actual business needs, and the embodiment of the present invention does not specifically limit it.

[0054] S104. Execute jet operation according to actual jet working conditions to achieve the purpose of noise reduction.

[0055] Specifically, the jet controller installed on the commercial vehicle controls the actual jet position given in the actual jet working condition, and performs the jet operation according to the actual jet direction and the actual jet speed, thereby reducing the aerodynamic noise in the key area of ​​the commercial vehicle and the noise at the human ear in the cabin of the commercial vehicle (see Figure 1G ).pass Figure 1G It can be seen that after the jet operation, the noise at the human ear in the commercial vehicle cabin has been significantly improved in all frequency bands, thus achieving the purpose of noise reduction. Figure 1G A in the figure represents the total sound pressure level spectrum curve of the noise at the human ear in the cabin of the commercial vehicle before the jet operation is performed. Figure 1GB in FIG. 1 represents the total sound pressure level spectrum curve of noise at the human ear in the cabin of a commercial vehicle after the jet operation is performed. Figure 1G The dBA (A-weighted decibels) in the 1990s is a unit for weighting sound. dBA can be weighted according to the sensitivity of the human ear to sounds of different frequencies, and more accurately reflect people's perception of sound. Figure 1G Hz (Hertz) is the unit of frequency.

[0056] The technical solution of the embodiment of the present invention is to obtain the key noise value of the surface of the key area of ​​the commercial vehicle during the driving process of the commercial vehicle and the human ear noise value in the cabin of the commercial vehicle; determine whether to perform the jet operation according to the key noise value, the human ear noise value, the noise threshold and the jet restriction rule; in the case of determining to perform the jet operation, based on the correspondence between the candidate noise area and the candidate jet condition in the jet condition database, determine the actual jet condition according to the key noise value and the human ear noise value; and perform the jet operation according to the actual jet condition to achieve the purpose of noise reduction. The above technical solution determines the actual jet condition by analyzing the key noise value of the surface of the key area of ​​the commercial vehicle and the human ear noise value in the cabin of the commercial vehicle; and performs the jet operation according to the actual jet condition, so as to achieve the disturbance intervention of the airflow at the key area of ​​the commercial vehicle, reduce the pressure at the key area of ​​the commercial vehicle, thereby reducing the aerodynamic noise in the key area of ​​the commercial vehicle, reducing the noise in the cab of the commercial vehicle, improving the riding environment of the commercial vehicle, improving the riding comfort of the commercial vehicle, and improving the driving comfort of the driver.

[0057] Embodiment 2

[0058] Figure 2 This is a flow chart of a commercial vehicle aerodynamic noise jet noise reduction method provided in Example 2 of the present invention. Based on the above examples, this example further optimizes "determining the actual jet conditions based on the correspondence between candidate noise areas and candidate jet conditions in the jet condition database and according to key noise values ​​and human ear noise values", and provides an optional implementation scheme. It should be noted that for the parts not described in detail in the examples of the present invention, reference can be made to the relevant descriptions of other examples. Figure 2 As shown, the method includes:

[0059] S201. Acquire key noise values ​​on the surface of key areas of the commercial vehicle and human ear noise values ​​in the cabin of the commercial vehicle during driving of the commercial vehicle.

[0060] Optionally, the key noise values ​​include, but are not limited to, a first key noise value of the rearview mirror surface, a second key noise value of the side window surface, a third key noise value of the front lower mirror surface, a fourth key noise value of the front windshield surface, a fifth key noise value of the sunshade surface, and a sixth key noise value of the roof surface. Among them, the second key noise value includes the noise value of the upper part of the side window and the noise value of the front part of the side window. The fourth key noise value includes the noise values ​​on both sides of the front windshield. The fifth key noise value includes the noise value at the rear corner of the sunshade.

[0061] S202: Determine whether to perform a jet operation according to a key noise value, a human ear noise value, a noise threshold, and a jet restriction rule.

[0062] S203: When it is determined to perform the jet operation, determine the target noise area according to the key noise value and the human ear noise value.

[0063] The target noise area refers to the noise area required to determine the target jet working condition.

[0064] Specifically, the key noise value and the human ear noise value can be compared with the noise limit value respectively; if the human ear noise value is less than the noise limit value, but there is a noise value greater than or equal to the noise limit value in the key noise value, then the noise value greater than or equal to the noise limit value is screened out from the key noise value as the target noise value; according to the target noise value, the target noise area is determined. Among them, the noise limit value refers to the maximum noise value allowed by the noise control standard. It should be noted that the noise limit value is greater than the noise threshold.

[0065] Exemplarily, if the human ear noise value is less than the noise limit value, but the noise value in front of the side window and the noise value on both sides of the front windshield in the key noise value are greater than or equal to the noise limit value, then the noise value in front of the side window and the noise value on both sides of the front windshield are used as the target noise value; based on the target noise value, the target noise area is determined as: the area between the A-pillar of the commercial vehicle and the inner side of the mirror housing of the rearview mirror of the commercial vehicle.

[0066] For example, if the human ear noise value is less than the noise limit value, but the noise value at the rear corner of the sun visor and the noise value at the upper part of the side window in the key noise value are greater than or equal to the noise limit value, then the noise value at the rear corner of the sun visor and the noise value at the upper part of the side window are used as target noise values; based on the target noise value, the target noise area is determined as: the area near the rear corner of the sun visor and the base of the rearview mirror.

[0067] S204 , based on the correspondence between the candidate noise regions and the candidate jet operating conditions in the jet operating condition database, and according to the target noise region, determining a target jet operating condition corresponding to the target noise region from the jet operating condition database.

[0068] Among them, the target jet condition refers to the jet condition corresponding to the target noise area in the jet condition database; optionally, the target jet condition includes a target jet position, a target jet velocity and a target jet direction.

[0069] Specifically, based on the correspondence between the candidate noise regions and the candidate jet working conditions in the jet working condition database, the target noise region is used as an index, and the target jet working condition corresponding to the target noise region is determined from the jet working condition database.

[0070] S205, verify the target jet working condition and obtain the verification result.

[0071] Specifically, the jet operation can be performed according to the target jet operating condition to obtain a new critical noise value and a new human ear noise value; if the new critical noise value is less than the critical noise value, and the new human ear noise value is less than the human ear noise value, then the verification result is determined to be that the target jet operating condition is feasible; otherwise, then the verification result is determined to be that the target jet operating condition is not feasible.

[0072] Among them, the new critical noise value refers to the critical noise value on the surface of the key area of ​​the commercial vehicle after the jet operation is performed according to the target jet working condition; correspondingly, the new human ear noise value refers to the human ear noise value in the cabin of the commercial vehicle after the jet operation is performed according to the target jet working condition.

[0073] More specifically, in a simulation experimental environment, the target jet position given in the target jet condition can be controlled by a jet controller installed on a commercial vehicle, and the jet operation can be performed according to the target jet direction and at the target jet speed; thereafter, a new key noise value can be obtained by a pressure pulsation sensor installed at a key area of ​​the commercial vehicle, and a new human ear noise value can be obtained by a sound pressure sensor installed in the cabin of the commercial vehicle; if the new key noise value is less than the key noise value, and the new human ear noise value is less than the human ear noise value, it means that the noise reduction purpose has been achieved, and the verification result is determined to be that the target jet condition is feasible; otherwise, it means that the noise reduction purpose has not been achieved, and the verification result is determined to be that the target jet condition is not feasible.

[0074] It is understandable that the verification of the target jet working condition can timely discover and solve problems before the actual application of the target jet working condition, so as to improve the practicality and reliability of the aerodynamic noise reduction of commercial vehicles.

[0075] S206. Determine the actual jet working condition according to the verification result.

[0076] Specifically, if the verification result shows that the target jet operating condition is feasible, the target jet operating condition is determined as the actual jet operating condition; if the verification result shows that the target jet operating condition is not feasible, based on the correspondence between the candidate noise area and the candidate jet operating condition in the jet operating condition database, the actual jet operating condition is re-determined according to the new key noise value and the new human ear noise value.

[0077] Among them, based on the correspondence between the candidate noise areas and the candidate jet conditions in the jet condition database, the actual jet condition is re-determined according to the new key noise value and the new human ear noise value. The key noise value can be replaced by the new key noise value, and the human ear noise value can be replaced by the new human ear noise value, and the method from S203 to S206 can be re-executed to obtain the actual jet condition.

[0078] S207, performing jet operation according to actual jet working conditions to achieve the purpose of noise reduction.

[0079] For example, if the actual jet positions given in the actual jet working condition are: the jet devices 11 arranged on the A-pillars 10 on both sides of the cab of the commercial vehicle, and the left rearview mirror jet device 21 arranged on the inner mirror shell of the left rearview mirror 20 of the main driver of the commercial vehicle; the actual jet direction given in the actual jet working condition includes the jet direction a corresponding to the jet device 11 and the jet direction b corresponding to the left rearview mirror jet device 21; the actual jet speed given in the actual jet working condition includes the jet speed v1 corresponding to the jet device 11 and the jet speed v2 corresponding to the left rearview mirror jet device 21. Specifically, through the jet controller installed on the commercial vehicle, the jet device 11 is controlled to perform the jet operation at the jet speed v1 according to the jet direction a, and the left rearview mirror jet device 21 is controlled to perform the jet operation at the jet speed v2 according to the jet direction b. Compared with before the jet operation, when the airflow of the commercial vehicle meets the cab during driving, the airflow passes through the corner of the A-pillar and flows through the gap between the cab and the rearview mirror. The airflow sticks to the body or directly acts on the surface of the side window glass. After the above-mentioned jet operation, the airflow forms an obvious air pressure area in the side window area, and the airflow no longer sticks to the body or directly acts on the side window glass surface. At this time, the larger turbulent vortex is destroyed in advance, forming a relatively small vortex, away from the cab or lagging behind the side window area, thereby reducing the impact of the airflow on the side windows of the commercial vehicle and slowing down the process of sound waves passing through the side windows, thereby achieving the purpose of noise reduction.

[0080] Exemplarily, if the actual jet positions given in the actual jet working conditions are: the base jet device 31 and the base front jet device 32 arranged on the base 30 of the left rearview mirror 20 of the main driver, the base jet device 51 arranged on the base 50 of the right rearview mirror 40 of the co-driver, and the jet device 61 arranged on the base of the blind mirror 60 of the commercial vehicle; the actual jet directions given in the actual jet working conditions include the jet direction 1 corresponding to the base jet device 31, the jet direction 2 corresponding to the base front jet device 32, the jet direction 3 corresponding to the base jet device 51, and the jet direction 4 corresponding to the jet device 61; the actual jet velocities given in the actual jet working conditions include the jet velocity V1 corresponding to the base jet device 31, the jet velocity V2 corresponding to the base front jet device 32, the jet velocity V3 corresponding to the base jet device 51, and the jet velocity V4 corresponding to the jet device 61. Specifically, through the jet controller installed on the commercial vehicle, the jet device 31 on the base is controlled to perform jet operation at a jet speed V1 in jet direction 1, the jet device 32 in front of the base is controlled to perform jet operation at a jet speed V2 in jet direction 2, the jet device 51 on the base is controlled to perform jet operation at a jet speed V3 in jet direction 3, and the jet device 61 is controlled to perform jet operation at a jet speed V4 in jet direction 4, thereby achieving the purpose of noise reduction.

[0081] The technical solution of the embodiment of the present invention is to obtain the key noise value of the surface of the key area of ​​the commercial vehicle during the driving of the commercial vehicle and the human ear noise value in the cabin of the commercial vehicle; determine whether to perform the jet operation according to the key noise value, the human ear noise value, the noise threshold and the jet restriction rule; when it is determined to perform the jet operation, determine the target noise area according to the key noise value and the human ear noise value; based on the correspondence between the candidate noise area and the candidate jet condition in the jet condition database, determine the target jet condition corresponding to the target noise area from the jet condition database according to the target noise area; verify the target jet condition to obtain the verification result; determine the actual jet condition according to the verification result; and perform the jet operation according to the actual jet condition to achieve the purpose of noise reduction. The above technical scheme determines the target jet working condition by analyzing the key noise value on the surface of the key area of ​​the commercial vehicle and the human ear noise value in the cabin of the commercial vehicle; then, the target jet working condition is verified to obtain the verification result, and the actual jet working condition is determined based on the verification result, thereby ensuring the effectiveness of the actual jet working condition. After the jet operation is performed according to the actual jet working condition, the disturbance intervention of the airflow in the key area of ​​the commercial vehicle is realized, and the pressure in the key area of ​​the commercial vehicle is reduced, thereby reducing the aerodynamic noise in the key area of ​​the commercial vehicle, reducing the noise in the cab of the commercial vehicle, improving the riding environment of the commercial vehicle, improving the riding comfort of the commercial vehicle, and improving the driving comfort of the driver.

[0082] Embodiment 3

[0083] Figure 3 This is a schematic diagram of the structure of a commercial vehicle aerodynamic noise jet noise reduction device provided in the third embodiment of the present invention. This embodiment can be applied to the case of aerodynamic noise reduction of commercial vehicles during driving. The device can be implemented in the form of hardware and / or software and can be configured in electronic equipment. Figure 3 As shown, the device comprises:

[0084] The noise value acquisition module 301 is used to acquire the key noise value of the surface of the key area of ​​the commercial vehicle and the human ear noise value in the cabin of the commercial vehicle during the driving process of the commercial vehicle;

[0085] A jet operation determination module 302, for determining whether to perform a jet operation according to a key noise value, a human ear noise value, a noise threshold and a jet restriction rule;

[0086] The actual jet working condition determination module 303 is used to determine the actual jet working condition according to the key noise value and the human ear noise value based on the correspondence between the candidate noise area and the candidate jet working condition in the jet working condition database when it is determined to perform the jet operation;

[0087] The jet operation execution module 304 is used to execute the jet operation according to the actual jet working condition to achieve the purpose of noise reduction.

[0088] The technical solution of the embodiment of the present invention is to obtain the key noise value of the surface of the key area of ​​the commercial vehicle during the driving process of the commercial vehicle and the human ear noise value in the cabin of the commercial vehicle; determine whether to perform the jet operation according to the key noise value, the human ear noise value, the noise threshold and the jet restriction rule; in the case of determining to perform the jet operation, based on the correspondence between the candidate noise area and the candidate jet condition in the jet condition database, determine the actual jet condition according to the key noise value and the human ear noise value; and perform the jet operation according to the actual jet condition to achieve the purpose of noise reduction. The above technical solution determines the actual jet condition by analyzing the key noise value of the surface of the key area of ​​the commercial vehicle and the human ear noise value in the cabin of the commercial vehicle; and performs the jet operation according to the actual jet condition, so as to achieve the disturbance intervention of the airflow at the key area of ​​the commercial vehicle, reduce the pressure at the key area of ​​the commercial vehicle, thereby reducing the aerodynamic noise in the key area of ​​the commercial vehicle, reducing the noise in the cab of the commercial vehicle, improving the riding environment of the commercial vehicle, improving the riding comfort of the commercial vehicle, and improving the driving comfort of the driver.

[0089] Optionally, the actual jet working condition determination module 303 includes:

[0090] A target noise area determination unit, used to determine the target noise area according to the key noise value and the human ear noise value;

[0091] A target jet operating condition determination unit is used to determine a target jet operating condition corresponding to the target noise region from the jet operating condition database according to the target noise region based on the correspondence between the candidate noise region and the candidate jet operating conditions in the jet operating condition database;

[0092] A verification result determination unit is used to verify the target jet working condition and obtain a verification result;

[0093] The actual jet working condition determination unit is used to determine the actual jet working condition according to the verification result.

[0094] Optionally, the verification result determination unit is specifically used to:

[0095] According to the target jet working condition, the jet operation is performed to obtain a new key noise value and a new human ear noise value;

[0096] If the new critical noise value is less than the critical noise value, and the new human ear noise value is less than the human ear noise value, then the verification result is determined to be feasible for the target jet working condition;

[0097] Otherwise, it is determined that the verification result is that the target jet condition is not feasible.

[0098] Optionally, the actual jet condition determination unit is specifically used for:

[0099] If the verification result shows that the target jet working condition is feasible, the target jet working condition is determined as the actual jet working condition;

[0100] If the verification result shows that the target jet condition is not feasible, the actual jet condition is re-determined based on the correspondence between the candidate noise areas and the candidate jet conditions in the jet condition database and according to the new critical noise value and the new human ear noise value.

[0101] Optionally, the jet operation determination module 302 is specifically used for:

[0102] If the critical noise value is greater than the noise threshold, and the human ear noise value is greater than the noise threshold, then obtaining current weather information and a current vehicle speed of the commercial vehicle;

[0103] detecting whether any one of the current vehicle speed and the current weather information satisfies the jet restriction rule;

[0104] If so, the jetting operation is not performed;

[0105] Otherwise, the fluidic operation is performed.

[0106] The commercial vehicle pneumatic noise jet noise reduction device provided in the embodiment of the present invention can execute the commercial vehicle pneumatic noise jet noise reduction method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing each commercial vehicle pneumatic noise jet noise reduction method.

[0107] According to an embodiment of the present invention, the present invention also provides an electronic device, a readable storage medium and a computer program product.

[0108] Embodiment 4

[0109] Figure 4 A schematic diagram of the structure of an electronic device 400 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.

[0110] like Figure 4 As shown, the electronic device 400 includes at least one processor 401, and a memory connected to the at least one processor 401 in communication, such as a read-only memory (ROM) 402, a random access memory (RAM) 403, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 401 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 402 or the computer program loaded from the storage unit 408 to the random access memory (RAM) 403. In RAM403, various programs and data required for the operation of the electronic device 400 can also be stored. The processor 401, ROM402 and RAM403 are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0111] Multiple components in the electronic device 400 are connected to the I / O interface 405, including: an input unit 406, such as a keyboard, a mouse, etc.; an output unit 407, such as various types of displays, speakers, etc.; a storage unit 408, such as a disk, an optical disk, etc.; and a communication unit 409, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 409 allows the electronic device 400 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0112] The processor 401 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 401 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The processor 401 performs the various methods and processes described above, such as a commercial vehicle aerodynamic noise jet noise reduction method.

[0113] In some embodiments, the commercial vehicle aerodynamic noise jet noise reduction method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 408. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 400 via the ROM 402 and / or the communication unit 409. When the computer program is loaded into the RAM 403 and executed by the processor 401, one or more steps of the commercial vehicle aerodynamic noise jet noise reduction method described above can be performed. Alternatively, in other embodiments, the processor 401 can be configured to execute the commercial vehicle aerodynamic noise jet noise reduction method in any other appropriate manner (for example, by means of firmware).

[0114] 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.

[0115] 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.

[0116] 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 conjunction 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.

[0117] 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).

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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 reducing aerodynamic noise of commercial vehicles by jet flow, characterized in that: include: Obtain the key noise values ​​of the surface of key areas of the commercial vehicle and the human ear noise values ​​in the cabin of the commercial vehicle during driving; Determining whether to perform a jet operation according to the key noise value, the human ear noise value, the noise threshold and the jet restriction rule; In the case of determining to perform the jet operation, determining the actual jet operating condition according to the key noise value and the human ear noise value based on the correspondence between the candidate noise area and the candidate jet operating condition in the jet operating condition database; According to the actual jet working condition, the jet operation is performed to achieve the purpose of noise reduction.

2. The method according to claim 1, characterized in that Based on the correspondence between the candidate noise areas and the candidate jet conditions in the jet condition database, and according to the key noise value and the human ear noise value, determining the actual jet condition includes: Determining a target noise area according to the key noise value and the human ear noise value; Based on the correspondence between the candidate noise areas and the candidate jet conditions in the jet condition database, according to the target noise area, determining the target jet condition corresponding to the target noise area from the jet condition database; Verifying the target jet working condition to obtain a verification result; According to the verification result, the actual jet working condition is determined.

3. The method according to claim 2, characterized in that The step of verifying the target jet working condition to obtain a verification result includes: According to the target jet working condition, a jet operation is performed to obtain a new key noise value and a new human ear noise value; If the new critical noise value is smaller than the critical noise value, and the new human ear noise value is smaller than the human ear noise value, then the verification result is determined to be that the target jet working condition is feasible; Otherwise, it is determined that the verification result is that the target jet operating condition is not feasible.

4. The method according to claim 3, characterized in that Determining the actual jet working condition according to the verification result includes: If the verification result shows that the target jet working condition is feasible, the target jet working condition is determined as the actual jet working condition; If the verification result shows that the target jet operating condition is not feasible, based on the correspondence between the candidate noise areas and the candidate jet operating conditions in the jet operating condition database, the actual jet operating condition is re-determined according to the new critical noise value and the new human ear noise value.

5. The method according to claim 1, characterized in that The determining whether to perform the jet operation according to the key noise value, the human ear noise value, the noise threshold and the jet restriction rule includes: If the key noise value is greater than the noise threshold, and the human ear noise value is greater than the noise threshold, obtaining current weather information and a current vehicle speed of the commercial vehicle; detecting whether any one of the current vehicle speed and the current weather information satisfies a jet restriction rule; If so, the jetting operation is not performed; Otherwise, the fluidic operation is performed.

6. A commercial vehicle pneumatic noise jet noise reduction device, characterized in that: include: A noise value acquisition module, used to acquire key noise values ​​on the surface of key areas of the commercial vehicle and human ear noise values ​​in the cabin of the commercial vehicle during driving; A jet operation judgment module, used for determining whether to perform a jet operation according to the key noise value, the human ear noise value, the noise threshold and the jet restriction rule; an actual jet operating condition determination module, for determining the actual jet operating condition according to the key noise value and the human ear noise value based on the correspondence between the candidate noise areas and the candidate jet operating conditions in the jet operating condition database when it is determined that the jet operation is to be performed; The jet operation execution module is used to execute the jet operation according to the actual jet working condition to achieve the purpose of noise reduction.

7. The device according to claim 6, characterized in that The actual jet working condition determination module comprises: a target noise area determination unit, configured to determine a target noise area according to the key noise value and the human ear noise value; a target jet operating condition determining unit, configured to determine a target jet operating condition corresponding to the target noise region from the jet operating condition database according to the target noise region based on a correspondence between the candidate noise region and the candidate jet operating conditions in the jet operating condition database; A verification result determination unit, used to verify the target jet working condition and obtain a verification result; The actual jet working condition determining unit is used to determine the actual jet working condition according to the verification result.

8. The device according to claim 7, characterized in that The verification result determination unit is specifically used to: According to the target jet working condition, a jet operation is performed to obtain a new key noise value and a new human ear noise value; If the new critical noise value is smaller than the critical noise value, and the new human ear noise value is smaller than the human ear noise value, then the verification result is determined to be that the target jet working condition is feasible; Otherwise, it is determined that the verification result is that the target jet operating condition is not feasible.

9. The device according to claim 8, characterized in that The actual jet working condition determination unit is specifically used for: If the verification result shows that the target jet working condition is feasible, the target jet working condition is determined as the actual jet working condition; If the verification result shows that the target jet operating condition is not feasible, based on the correspondence between the candidate noise areas and the candidate jet operating conditions in the jet operating condition database, the actual jet operating condition is re-determined according to the new critical noise value and the new human ear noise value.

10. The device according to claim 6, characterized in that The jet operation judgment module is specifically used for: If the key noise value is greater than the noise threshold, and the human ear noise value is greater than the noise threshold, obtaining current weather information and a current vehicle speed of the commercial vehicle; detecting whether any one of the current vehicle speed and the current weather information satisfies a jet restriction rule; If so, the jetting operation is not performed; Otherwise, the fluidic operation is performed.

11. 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 so that the at least one processor can execute the commercial vehicle aerodynamic noise jet noise reduction method according to any one of claims 1 to 5.

12. 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 commercial vehicle aerodynamic noise jet noise reduction method according to any one of claims 1 to 5 when executed.

13. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method for reducing the aerodynamic noise of a commercial vehicle according to any one of claims 1 to 5 is implemented.

Images