Vehicle horn and support matching method, medium, equipment and product

Abstract

The embodiment of the invention discloses a vehicle horn and support matching method, a medium, equipment and a product, and the method comprises the steps: obtaining an initial vibration value of a steering wheel under a sound production condition when a horn is mounted on a support; screening out candidate bracket configuration from a preset bracket configuration library according to the initial vibration value; based on a preset requirement, screening the candidate support configuration, determining the support meeting the preset requirement as a to-be-matched support, and obtaining a noise pressure level of a driver under a sound production working condition when the loudspeaker is mounted on the to-be-matched support; and when the noise sound pressure level is within a preset range, acquiring a target modal value of the loudspeaker when the loudspeaker is mounted on the to-be-matched bracket, and adjusting the structural parameters of the to-be-matched bracket according to the target modal value to obtain a target bracket matched with the loudspeaker. According to the embodiment of the invention, the problem of poor tactile and auditory comfort of a driver caused by horn vibration transmission is effectively solved under the condition that a bracket does not need to be redesigned and a vehicle main body structure does not need to be modified or a mold does not need to be reopened.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of vehicle vibration, and particularly relates to a matching method of a vehicle horn and a support, a storage medium, an electronic device and a computer program product. BACKGROUND

[0002] As a means of transportation, automobiles have been integrated into everyone's daily life, and people's requirements for the comfort of automobiles are also getting higher and higher. As an important safety part of a vehicle, a horn plays a role of reminding pedestrians and vehicles to avoid or pay attention. At present, the horn is mostly installed in the front compartment of the vehicle. When the driver presses the horn, the horn will produce vibration at the same time of sound, and the vibration is transmitted to the steering wheel through the vehicle body and instruments, thereby causing vibration of the steering wheel. The driver holding the steering wheel will obviously perceive the vibration, and the size of the sound and vibration will affect the comfort feeling of the driver. Therefore, it is necessary to reduce the influence of horn vibration transmission on the sense of touch and hearing of the driver. SUMMARY

[0003] The purpose of the embodiments of the present application is to provide a matching method of a vehicle horn and a support, a medium, a device and a product, which can solve the problem of poor comfort of the sense of touch and hearing of the driver caused by horn vibration transmission.

[0004] In a first aspect, the embodiments of the present application provide a matching method of a vehicle horn and a support, which comprises: obtaining an initial vibration value of a steering wheel under a sound production working condition when a horn is installed on a support; screening a candidate support configuration from a preset support configuration library according to the initial vibration value; the candidate support configuration comprises a candidate installation position and a candidate structure type; screening the candidate support configuration based on a preset requirement, determining a support meeting the preset requirement as a to-be-matched support, and obtaining a noise sound pressure level of a driver under the sound production working condition when the horn is installed on the to-be-matched support; when the noise sound pressure level is within a preset range, obtaining a target modal value of the horn when the horn is installed on the to-be-matched support, and adjusting a structure parameter of the to-be-matched support according to the target modal value to obtain a target support matched with the horn.

[0005] Optionally, the support configuration library comprises a plurality of installation positions and a plurality of structure types, and the screening of the candidate support configuration from the preset support configuration library according to the initial vibration value comprises: when the initial vibration value is greater than or equal to a preset vibration value, combining the installation positions and the structure types to generate a plurality of intermediate support configurations from the support configuration library; screening the candidate support configuration from the plurality of intermediate support configurations based on the preset vibration value.

[0006] Optionally, the filtering out of the candidate support configuration from the intermediate support configurations based on the preset vibration value comprises: obtaining an intermediate vibration value of the steering wheel in a sounding working condition when the horn is installed on the support adopting the intermediate support configuration; determining the intermediate support configuration with the intermediate vibration value less than the preset vibration value as the candidate support configuration.

[0007] Optionally, the preset requirements comprise a sound pressure requirement, a compatibility requirement and an installation requirement, and the filtering out of the candidate support configuration based on the preset requirements comprises determining a support adopting the preset requirements as a to-be-matched support, and obtaining a noise sound pressure level of the driver in the sounding working condition when the horn is installed on the to-be-matched support, comprising: for each of the candidate support configurations, obtaining a vehicle sound pressure level at a preset position outside the vehicle, a compatibility result of the vehicle function and the horn, and a part installation space around the candidate installation position when the horn is installed on the support adopting the candidate support configuration; determining the candidate support configuration with the vehicle sound pressure level meeting the sound pressure requirement, the compatibility result meeting the compatibility requirement, and the part installation space meeting the installation requirement as a to-be-matched support configuration, determining a support adopting the to-be-matched support configuration as a to-be-matched support, and obtaining a noise sound pressure level of the driver in the sounding working condition when the horn is installed on the to-be-matched support.

[0008] Optionally, when the noise sound pressure level is within a preset range, obtaining a target modal value of the horn installed on the to-be-matched support, and adjusting a structure parameter of the to-be-matched support according to the target modal value to obtain a target support matched with the horn, comprising: when the noise sound pressure level is within a preset range, testing the horn installed on the to-be-matched support based on a hammering modal test to obtain the target modal value; adjusting the structure parameter of the to-be-matched support according to the target modal value to obtain a target support matched with the horn.

[0009] Optionally, the adjusting of the structure parameter of the to-be-matched support according to the target modal value to obtain a target support matched with the horn comprises: constructing a support model corresponding to the to-be-matched support, and taking the structure parameter of the to-be-matched support as a variable of the support model; iteratively performing a matching operation, and in each iteration, performing the following operations: performing simulation analysis to obtain a first modal value corresponding to the support model; When the first modal value matches the target modal value, the variable corresponding to the bracket model is determined as the structural parameter of the target bracket, the iteration is ended, otherwise, the variable of the bracket model is adjusted to obtain a new bracket model, and the next iteration is performed again.

[0010] Optionally, the method further comprises: When the noise sound pressure level is not in the preset range, the installation position of the horn on the bracket to be matched is adjusted through iteration and noise testing is performed to obtain a new noise sound pressure level, until the new noise sound pressure level is in the preset range, and the adjusted installation position of the horn is determined as the target installation position. A second modal value of the horn installed based on the target installation position is obtained, and the structural parameter of the bracket to be matched is adjusted according to the second modal value to obtain a target bracket matched with the horn.

[0011] In a second aspect, an embodiment of the present application provides a storage medium, which stores computer instructions, and when a computer executes the computer instructions, steps of a vehicle horn and bracket matching method according to the first aspect are executed.

[0012] In a third aspect, an embodiment of the present application provides an electronic device, which includes at least one processor, and a memory connected with the at least one processor in communication, and the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute steps of a vehicle horn and bracket matching method according to the first aspect.

[0013] In a fourth aspect, an embodiment of the present application provides a computer program product, which includes computer programs / instructions, and when the computer programs / instructions are executed by a processor, steps of a vehicle horn and bracket matching method according to the first aspect are implemented.

[0014] In this embodiment, the initial vibration value of the steering wheel under sound emission conditions when the horn is installed on the bracket is obtained; candidate bracket configurations are selected from a preset bracket configuration library based on the initial vibration value; the candidate bracket configurations include candidate installation positions and candidate structural types; the candidate bracket configurations are selected based on preset requirements, and brackets that meet the preset requirements are determined as the matching brackets, and the noise sound pressure level of the driver under sound emission conditions when the horn is installed on the matching bracket is obtained; when the noise sound pressure level is within a preset range, the target modal value of the horn when the horn is installed on the matching bracket is obtained, and the structural parameters of the matching bracket are adjusted according to the target modal value to obtain a target bracket that matches the horn. This application embodiment effectively improves noise comfort by selecting a suitable bracket structure type and installation position from a preset bracket configuration library. Since the structure type is selected based on the existing bracket configuration library, no new design is required, which significantly reduces optimization costs and improves development efficiency. At the same time, the adjustment of the installation position only involves the setting of the vehicle body mounting point, without the need to modify the main structure of the vehicle or re-molde it. This maximizes the preservation of the universality and platform characteristics of the horn body and its sound power, effectively solving the problem of poor tactile and auditory comfort of the driver caused by the transmission of horn vibration. While ensuring the reminder function, it significantly improves the driver's comfort. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating the steps of a matching method for a vehicle horn and bracket provided in an embodiment of this application. Figure 2 This is a schematic diagram of a bracket installation position provided in an embodiment of this application; Figure 3 This is a schematic diagram of the relative positions of various structures and the installation structure provided in an embodiment of this application; Figure 4 This is a schematic diagram of a speaker and bracket before optimization, provided in an embodiment of this application; Figure 5 This is a schematic diagram of an optimized speaker and bracket provided in an embodiment of this application; Figure 6 This is an overall flowchart of a matching method for a vehicle horn and bracket provided in an embodiment of this application; Figure 7 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0016] With reference to the drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0017] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0018] The matching method of the vehicle horn and the bracket provided by the embodiments of the present application will be described in detail below with reference to the drawings, through specific embodiments and application scenarios.

[0019] In the related art, in the case that the horn assembly of the target vehicle sounds, the vibration acceleration information and the vibration frequency information of the steering wheel corresponding to the horn assembly of the target vehicle in the sounding process and the sounding frequency information of the horn assembly are obtained, it is judged whether the horn assembly causes obvious vibration of the steering wheel of the vehicle in the sounding process, and the horn bracket or the horn sounding power is adjusted according to the comparison result, mainly including at least one of the following adjustment methods of the horn bracket modal adjustment strategy: reducing the thickness of the horn bracket, increasing the length of the horn bracket, and replacing one thick horn bracket with multiple thin horn brackets installed in overlap. The horn bracket bushing vibration isolation adjustment strategy, reducing the power supply voltage of the bass horn or reducing the power supply voltage of the treble horn to improve the NVH (Noise, Vibration, Harshness, noise, vibration and harshness) characteristics of the vehicle when the horn works, and improve the user experience.

[0020] However, this method has the following disadvantages: 1. The bracket modal adjustment strategy usually means that the bracket needs to be redesigned, and the development cycle and cost increase; 2. The bushing vibration isolation strategy needs to introduce new parts, which not only increases the material cost, but also improves the assembly complexity; 3. Adjusting the sounding power will cause the horn sound of different models under the same platform to have differences, which will damage the consistency of the brand sound and is not conducive to platform management and control. 4. This method does not systematically consider the influence on the final sounding effect of the horn (such as the passing noise outside the vehicle and the sound quality inside the vehicle) in the adjustment process, which may cause the vibration problem to be alleviated, but new noise complaints or horn sound pressure levels that do not meet the regulatory requirements.

[0021] Referring toFigure 1 is a step flow chart of a matching method of a vehicle horn and a support provided by an embodiment of the present application, and specifically includes the following steps: Step 101, obtaining an initial vibration value of a steering wheel in a sounding working condition when a horn is installed on a support; In the embodiment of the present application, in order to determine whether the current support configuration needs to be optimized, the vibration level of the steering wheel in the horn scene needs to be tested to obtain the initial vibration value.

[0022] Specifically, when the horn is installed on the support, an acceleration sensor can be arranged on the steering wheel, and the vibration acceleration data obtained by the acceleration sensor in the horn sounding working condition is the initial vibration value.

[0023] Step 102, screening a candidate support configuration from a preset support configuration library according to the initial vibration value; the candidate support configuration includes a candidate installation position and a candidate structure type; In the embodiment of the present application, whether the current support configuration meets the requirements can be determined according to the initial vibration value, and in the case of not meeting the requirements, the possible support configuration, i.e., the candidate support configuration, needs to be quickly locked from the known and reliable configuration library. It should be noted that the support configuration library refers to a database preset based on the support adopted by different vehicle models and engineering experience, the candidate installation position refers to the fixing point position of the support on the vehicle body that can be selected, and the candidate structure type refers to different structures of the support body.

[0024] The embodiment of the present application selects appropriate support structure types and installation positions in the existing support configuration library, without the need to redesign the structure type of the support, significantly reduces the optimization cost and improves the development efficiency in the case of improving the noise comfort. At the same time, the adjustment of the installation position only involves the setting of the fixing point of the vehicle body, without the need to change or re-open the vehicle body structure, thereby maximizing the generality and platformization characteristics of the horn body and its sounding power.

[0025] Step 103, screening the candidate support configuration based on a preset requirement, determining a support meeting the preset requirement as a to-be-matched support, and obtaining a noise sound pressure level of a driver in a sounding working condition when the horn is installed on the to-be-matched support; In the embodiment of the present application, in order to ensure the feasibility of the candidate support configuration in actual application, only when the candidate support configuration meets the preset requirement, it is determined as the to-be-matched support and enters the fine evaluation stage of the noise performance, and the preset requirement is a requirement preset to ensure the feasibility of the candidate support configuration in actual application.

[0026] Specifically, when it is determined that the candidate bracket configuration has certain feasibility in actual application, the noise sound pressure level of the driver is measured when the horn sounds, so as to objectively evaluate the influence of the configuration on the acoustic comfort in the vehicle.

[0027] In step 104, when the noise sound pressure level is in the preset range, a target modal value of the horn is obtained when the horn is installed in the to-be-matched bracket, and a structure parameter of the to-be-matched bracket is adjusted according to the target modal value, to obtain a target bracket matched with the horn.

[0028] In the embodiment of the present application, in order to further optimize the structure parameter of the bracket on the basis of noise standard, only when the noise sound pressure level meets the requirement, the modal value of the horn in the current state is obtained as a target, and the bracket is finally designed in detail according to the target. The preset range refers to the noise level interval preset on the basis of reference experience and data accumulation. As an example, the preset range can be 75-77 dB. It should be noted that the specific value of the preset range is only an example, and the embodiment of the present application is not limited thereto.

[0029] Specifically, when it is determined that the noise sound pressure level meets the acoustic comfort, the natural frequency (i.e. the target modal value) of the horn and bracket assembly is obtained, and then the target modal value is taken as an optimization target of iterative optimization by simulation means, and the structure parameter of the bracket is iteratively optimized under the premise that the installation position and the main body configuration remain unchanged, so as to output the final target bracket design.

[0030] It should be noted that the structure parameter in the embodiment of the present application and the aforementioned structure type have certain correlation, but they belong to different levels of design concepts. Specifically, the structure type belongs to macroscopic topological configuration selection, and the structure parameter belongs to microscopic size and shape refinement. Therefore, it can be simply understood that the embodiment of the present application further refines the specific structure parameter after fixing the structure type and the installation position, to obtain a target bracket matched with the horn. The target bracket matched with the horn can be understood as that the system composed of the target bracket and the horn achieves cooperation in dynamic performance, which meets the requirements of vibration and noise control, and ensures the structural strength and assembly feasibility.

[0031] The embodiment of the application effectively improves the noise comfort by selecting a suitable support structure type and mounting position from a preset support configuration library. Since the structure type is selected based on the existing support configuration library, there is no need for new design, which significantly reduces the optimization cost and improves the development efficiency. Meanwhile, the adjustment of the mounting position only involves the setting of the vehicle body mounting point, without the need to change or re-open the mold of the vehicle main structure, thereby maximizing the generality and platformization characteristics of the horn body and its sound power, effectively solving the problem of poor driver tactile and auditory comfort caused by horn vibration transmission, while ensuring the reminder function and significantly improving the comfort of the driver.

[0032] In an embodiment of the application, the support configuration library includes a plurality of mounting positions and a plurality of structure types, and the candidate support configuration is selected from the preset support configuration library according to the initial vibration value, including: When the initial vibration value is greater than or equal to the preset vibration value, the mounting position and the structure type are combined to generate a plurality of intermediate support configurations from the support configuration library. The candidate support configuration is selected from the plurality of intermediate support configurations based on the preset vibration value.

[0033] In the embodiment of the application, the preset support configuration library can include a plurality of mounting positions and a plurality of structure types, and the preset vibration value refers to a vibration threshold value preset based on historical experience. The combination of the mounting position and the structure type selected from the support configuration library refers to systematically generating all possible structure and position combinations through permutation and combination to form a complete potential scheme, wherein the preset vibration value can be used as a basis for subsequent screening of these potential schemes.

[0034] The preset vibration value can be set to 0.05g. It should be noted that the specific value of the preset vibration value is only an example, and the embodiment of the application is not limited thereto.

[0035] Specifically, in order to determine whether the current support configuration needs to be optimized, the initial vibration value is compared with the preset vibration value to automatically trigger the optimization screening process of the support configuration when it is detected that the current configuration does not meet the vibration requirement (i.e., the initial vibration value is greater than or equal to the preset vibration value).

[0036] As an example, two installation positions (position one and position two) and three structure types (structure one, structure two and structure three) can be included in the bracket configuration library, based on which, when the installation positions and the structure types are combined, a plurality of intermediate bracket configurations can be obtained, which can be specifically referred to Table 1 below, which shows the feasibility evaluation results of each intermediate bracket configuration, it can be seen that the vibration values of configuration one, configuration two, configuration three and configuration five all meet the requirements, at this time, the four configurations can be determined as the candidate bracket configurations.

[0037] Table 1 Evaluation results of each intermediate bracket configuration

[0038] It should be noted that the original position refers to the original installation point of the bracket in the current system before the vibration optimization analysis, for reference Figure 2 Fig. 1 is a schematic diagram of a bracket installation position provided by an embodiment of the present application, including three positions of an original position, position one and position two.

[0039] The present application embodiment can quickly and efficiently lock the feasible optimization scheme from a plurality of possible schemes by using the existing bracket configuration library and based on vibration performance, avoiding the inefficiency and uncertainty caused by relying on manual experience for trial and error, thereby significantly improving the intelligent level and reliability of the bracket design.

[0040] In an embodiment of the present application, the candidate bracket configuration is selected from the plurality of intermediate bracket configurations based on the preset vibration value, comprising: obtaining an intermediate vibration value of the steering wheel under the sound production working condition when the loudspeaker is installed on the bracket adopting the intermediate bracket configuration; determining the intermediate bracket configuration with the intermediate vibration value less than the preset vibration value as the candidate bracket configuration.

[0041] In the embodiment of the present application, the plurality of intermediate bracket configurations generated need to be analyzed to select the candidate bracket configuration, in order to accurately identify the effective candidate bracket configuration from the plurality of intermediate bracket configurations, the performance of each configuration under actual working condition needs to be specifically simulated or tested.

[0042] As an example, through simulation analysis, the intermediate vibration value of each intermediate bracket configuration under the same working condition can be obtained, and compared with the preset vibration value to select the effective candidate bracket configuration, at this time, for the vibration values in Table 1, feasible means that the intermediate vibration value is less than the preset vibration value, and unfeasible means that the intermediate vibration value is greater than or equal to the preset vibration value. For example, configuration four is determined as unfeasible and excluded from the subsequent options because the intermediate vibration value still exceeds the preset threshold.

[0043] The embodiments of the present application can accurately quantitatively evaluate each combined scheme through the key performance indicator of the intermediate vibration value, can ensure that the selected candidate support configuration can meet the preset vibration control target, can lay a reliable data foundation for subsequent selection of the optimal scheme, and can effectively avoid errors that may be caused by subjective experience.

[0044] In an embodiment of the present application, the preset requirements include sound pressure requirements, compatibility requirements and installation requirements, and the candidate support configuration is selected based on the preset requirements, and the support meeting the preset requirements is determined as a to-be-matched support, and the noise sound pressure level of the driver under the sounding working condition when the horn is installed on the to-be-matched support is obtained, including: For each candidate support configuration, the vehicle sound pressure level at a preset position outside the vehicle when the horn is installed on the support using the candidate support configuration, the compatibility result of the vehicle function and the horn, and the part installation space around the candidate installation position are obtained under the sounding working condition. The candidate support configuration meeting the vehicle sound pressure level, the compatibility result and the part installation space is selected as a to-be-matched support configuration, the support using the to-be-matched support configuration is determined as a to-be-matched support, and the noise sound pressure level of the driver under the sounding working condition when the horn is installed on the to-be-matched support is obtained.

[0045] In the embodiments of the present application, the preset requirements include sound pressure requirements, compatibility requirements and installation requirements. Specifically, the sound pressure requirement (safety regulation requirement) refers to a minimum sound pressure level limit value measured at a specific distance in front of the vehicle to ensure that the warning function of the vehicle horn is effective and meets the relevant regulations; the compatibility requirement (electromagnetic compatibility requirement) refers to that the electromagnetic disturbance generated by the horn when working should not affect the normal operation of other electronic functions (such as navigation, radio, reversing image, etc.) of the vehicle, and at the same time, the horn itself should not be disturbed by other systems on the vehicle, to ensure the collaborative stability of the entire vehicle electrical system; the installation requirement (installation process requirement) refers to that the support and the horn thereon must have sufficient assembly space at the target installation position, and maintain a safe gap with the surrounding parts to avoid static interference or vibration friction, to meet the assembly on the production line and the reliability of long-term use.

[0046] Specifically, by obtaining key parameters such as vehicle sound pressure level, compatibility result and part installation space, and by comparing these measured or simulated data with various preset requirements, it can be determined whether the current candidate support configuration has feasibility in actual application, at this time, the configuration meeting all preset requirements can be formally determined as a to-be-matched support.

[0047] As an example, the sound pressure requirement verifies that: holding the sound level meter at the front 7m of the whole vehicle (preset position outside the vehicle), pressing the horn to make the horn sound, and recording whether the vehicle sound pressure level recorded on the sound level meter at this time is greater than or equal to 87dBA; the compatibility requirement verifies that: starting the navigation, reversing image or radio function, pressing the horn to make the horn sound, and confirming that the navigation, reversing image or radio function is not disturbed when the horn is ringing, and no abnormality is displayed and no noise is heard; the installation requirement verifies that: confirming that there is no difficulty in assembling the whole vehicle, confirming that there is no interference with other parts around, and leaving enough tool operation space and gap.

[0048] As another example, as shown in Table 1, after configuration one, configuration two, configuration three and configuration five are determined as the candidate support configurations, further feasibility verification is performed on the candidate support configurations, and it can be obtained that only configuration five meets the sound pressure requirement, the compatibility requirement and the installation requirement at the same time, and at this time, configuration five can be determined as the to-be-matched support.

[0049] The embodiment of the present application can ensure that the to-be-matched support finally entering the noise comfort evaluation not only meets the vibration performance, but also is a comprehensive feasible engineering solution in terms of regulatory compliance, functional safety and production assembly, thereby greatly improving the design success rate and scheme landing efficiency.

[0050] Referring to Figure 3 is a schematic diagram of relative positions and mounting structures of various structures provided by the embodiment of the present application, and specifically shows the relative positions and mounting structures among the steering wheel body 100, the front anti-collision beam 200 and the horn and support 300.

[0051] Referring to Figure 4 is a schematic diagram of the horn and support before optimization provided by the embodiment of the present application, referring to Figure 5 is a schematic diagram of the horn and support after optimization provided by the embodiment of the present application. In the embodiment of the present application, the support before optimization is obviously cantilevered too long to amplify vibration, the support stiffness is high, the damping is small, and the vibration absorption capacity is poor; the installation point position before optimization is the energy absorption box position of the front anti-collision beam, which is close to the main driver, and the connection structure is strong, and the energy transmission is large; the horn diaphragm direction before optimization corresponds to the direction with high support stiffness, the excitation and the force transmission level are large, and the force transmission direction dimension is not decoupled. The support after optimization has a shorter cantilever length, and has better vibration absorption capacity; the support after optimization is installed on the side surface of the energy absorption box, the side surface has a larger area than the upper surface of the energy absorption box, the overall strength is weaker, and the energy transmission is smaller; the horn diaphragm direction after optimization corresponds to the direction with low support stiffness, the vibration transmission is smaller, and the decoupling is better.

[0052] In an embodiment of the present application, when the noise sound pressure level is in the preset range, the target modal value of the loudspeaker installed on the to-be-matched support is obtained, and the structural parameters of the to-be-matched support are adjusted according to the target modal value to obtain a target support matched with the loudspeaker, comprising: When the noise sound pressure level is in the preset range, the loudspeaker installed on the to-be-matched support is tested based on the hammering method modal test to obtain the target modal value. The structural parameters of the to-be-matched support are adjusted according to the target modal value to obtain a target support matched with the loudspeaker.

[0053] In an embodiment of the present application, the noise sound pressure level in the preset range means that the noise near the driver's ear is in the acceptable subjective comfort interval, at this time it can be considered that the noise problem caused by the air propagation path has been controlled, but the risk of structural resonance caused by the structural propagation path still needs to be ruled out, therefore, the structural parameters of the support need to be further optimized, in order to avoid vibration and abnormal sound caused by insufficient structural stiffness or mass of the support, the target modal value avoiding the main excitation frequency of the loudspeaker is taken as the optimization target. The specific preset range can be determined by pre-calibration.

[0054] The hammering method modal test refers to an experimental method of exciting a structure by a force hammer and measuring input force and output response to identify dynamic characteristics such as natural frequency, damping ratio and vibration mode, in an embodiment of the present application, the loudspeaker installed on the to-be-matched support is knocked by a force hammer, the excitation force and the vibration response measured by an acceleration sensor are synchronously collected, and the corresponding target modal value can be extracted by processing with modal analysis software. The structural parameters refer to the geometric and material properties that directly affect the stiffness and mass of the support, including but not limited to the shape, thickness and reinforcement layout of the support.

[0055] After the acoustic performance meets the standard, the embodiment of the present application can realize closed-loop design from noise control to vibration root prevention by introducing the target modal value as the optimization target, to ensure that the matching of the target support and the loudspeaker finally obtained achieves cooperation in dynamic characteristics, so that the vibration and noise comfort caused by the whole vehicle loudspeaker are considered at the same time.

[0056] In an embodiment of the present application, the target support matched with the loudspeaker is obtained by adjusting the structural parameters of the to-be-matched support according to the target modal value, comprising: A support model corresponding to the to-be-matched support is constructed, and the structural parameters of the to-be-matched support are taken as variables of the support model; The matching operation is iteratively performed, and the following operations are performed each time: Simulation analysis is performed to obtain a first modal value corresponding to the support model; When the first modal value matches the target modal value, the variable corresponding to the stent model is determined as the structural parameter of the target stent, the iteration is ended, otherwise, the variable of the stent model is adjusted, a new stent model is obtained, and the next iteration is performed again.

[0057] In the embodiments of the present application, in order to efficiently and accurately realize the directional optimization of the stent structural parameters, an iterative simulation analysis process needs to be established.

[0058] As an example, the simulation analysis can be realized by a CAE (Computer Aided Engineering) analysis method, first, a parameterized stent finite element model is established and boundary conditions are given, then calculation is performed and modal results are compared, if the target is not met, the design variable is automatically or manually adjusted, and calculation is performed again until the result converges to the standard. In the embodiments of the present application, the stent model corresponding to the stent to be matched is first constructed, and the structural parameters of the stent to be matched are taken as the variables of the stent model, so that the structural parameters of the stent to be matched are iteratively optimized when the variables of the stent model are iteratively optimized.

[0059] In the iteration process, a matching operation needs to be performed for each iteration. Specifically, in each iteration, the stent model is simulated and analyzed to obtain a first modal value corresponding to the stent model. When the first modal value matches the target modal value, the variable corresponding to the stent model is determined as the structural parameter of the target stent, and the iteration optimization is ended, otherwise, the variable of the stent model is adjusted, a new stent model is obtained, and the next iteration is further performed.

[0060] It should be noted that at this time, the overall structure and direction of the stent design have been locked, and there is no need to redesign, only local adjustments are made to the shape, thickness, reinforcement layout, etc. of the stent on the basis of the existing design, so that when the horn is installed at the original position of the stent, the corresponding modal value of the horn is consistent with the target modal value. The optimized stent is assembled to the whole vehicle, at this time, the vibration and noise comfort caused by the horn of the whole vehicle is considered.

[0061] In the embodiments of the present application, the first modal value is used to represent the inherent frequency characteristics of the model in the current iteration state. It can be understood that the first modal value does not specifically refer to the result of a certain iteration, but represents the modal value calculated in each iteration during the iterative optimization of the structural parameters of the stent, and the final modal value corresponding to the iteration that meets the matching condition is finally adopted.

[0062] As an example, assuming that the target modal value is 28Hz, in the process of twice iterative optimization, the first iteration result is 26.5Hz, and the second iteration result is 27.9Hz, then the corresponding model parameters (variables) are determined as the structural parameters of the target stent.

[0063] The embodiment of the application can efficiently and accurately obtain a set of optimal structure parameters by taking the target modal value measured by experiment as the optimization target of simulation optimization and iteratively optimizing the structure parameters of the support through simulation analysis means, so that the final target support is obtained, and it is ensured that the target support can completely reproduce (match) the state of the physical prototype that has been verified to be qualified in terms of NVH performance, so that it is ensured from the root that the vibration and noise performance of the target support will not deviate from the benchmark after being installed in the vehicle.

[0064] In an embodiment of the application, the method further comprises: When the noise sound pressure level is not in the preset range, iteratively adjusting the installation position of the horn on the support to be matched and performing noise testing to obtain a new noise sound pressure level until the new noise sound pressure level is in the preset range, and determining the adjusted installation position of the horn as a target installation position; obtaining a second modal value of the horn installed based on the target installation position, and adjusting the structure parameters of the support to be matched according to the second modal value to obtain a target support matched with the horn.

[0065] In the embodiment of the application, there may be a case that the noise sound pressure level is not in the preset range, in which case the current installation position of the horn still does not meet the comfort requirement of the driver in terms of the contribution to the in-vehicle noise. Therefore, in order to find an optimal installation position that can make the noise meet the standard, it is necessary to iteratively adjust the relative position between the horn and the vehicle body, i.e., the installation position of the horn on the support to be matched. Specifically, the installation position of the horn on the support to be matched can be adjusted to be closer to the vehicle body, and noise testing can be performed to obtain the current noise sound pressure level (i.e., a new noise sound pressure level). When the new noise sound pressure level is in the preset range, it can be considered that the noise has been successfully controlled in the comfort interval by adjusting the installation position of the horn on the support, and the position determined after this round of adjustment can be taken as the target installation position.

[0066] As an example, it is assumed that the noise sound pressure level is 70 dB, and the preset range is 75-77 dB. In this case, the noise sound pressure level is not in the preset range, and it is necessary to iteratively adjust the installation position of the horn on the support to be matched and perform noise testing. Each time, the installation position of the horn on the support can be adjusted to be closer to the vehicle body by 5 mm. It is assumed that after one adjustment, noise testing is performed to obtain a new noise sound pressure level of 75 dB, which is in the preset range. In this case, the position after this round of adjustment can be taken as the target installation position.

[0067] After the target installation position is determined, it is also necessary to optimize the structure parameters of the to-be-matched support through the hammering modal test and related simulation analysis means. It needs to be noted that the second modal value can be understood as the aforementioned target modal value, and the difference is only in the numerical value. The process of optimizing the structure parameters based on the second modal value is the same as the process of optimizing the structure parameters based on the target modal value, and will not be described here.

[0068] When the noise sound pressure level is not in the preset range, the application embodiment adjusts the installation position of the horn on the to-be-matched support, so that the noise performance can be quickly and low-costly adjusted to a qualified level without shaking the support main structure and vehicle design, and finally a horn and support matching scheme that meets the noise, vibration and engineering feasibility requirements can be obtained.

[0069] Reference Figure 6 The overall flowchart of a matching method of a vehicle horn and support provided by the application embodiment specifically includes the following steps S1-S6: S1: Test the steering wheel vibration under the horn scene to obtain the vibration acceleration value (initial vibration value).

[0070] The acceleration sensor is pasted on the steering wheel, the horn is sounded, the steering wheel vibration value read by the acceleration sensor at this time is recorded, and the target (preset vibration value) is compared to confirm whether the vibration acceleration is less than the target value.

[0071] S2: Replace the horn support or adjust the support vehicle body installation position and test to obtain the vibration acceleration value.

[0072] The acceleration sensor is pasted on the steering wheel, the horn is sounded, the steering wheel vibration value read by the acceleration sensor at this time is recorded, and the target value 0.05g is compared to confirm whether the vibration acceleration is less than the target value.

[0073] S3: Confirm whether the safety regulations, electromagnetic compatibility and process are feasible.

[0074] Hold the sound level meter at the front 7m of the whole vehicle, press the horn to make the horn sound, and record whether the sound pressure level recorded on the sound level meter is ≥87dBA; turn on the navigation, reverse image or radio, press the horn to make the horn sound, and confirm that the navigation, reverse image or radio function is not disturbed when the horn is ringing; confirm that there is no difficulty in assembling the whole vehicle, and confirm that there is no interference with other surrounding parts.

[0075] S4: Test the driver's ear side noise under the horn scene to obtain the noise sound pressure level.

[0076] The sound level meter is placed at the driver's ear side, the horn is pressed to make the horn sound, the sound pressure level recorded on the sound level meter at this time is recorded, and compared with the target to confirm whether the noise sound pressure level is within the target range.

[0077] S5: The mounting position of the horn on the bracket is moved closer to the vehicle body side, and the horn pressing noise test is performed to obtain the noise sound pressure level and compare it with the target.

[0078] The mounting position of the horn on the bracket is moved closer to the vehicle body side by 5mm, and the horn pressing noise test is performed to obtain the noise sound pressure level of 75.0dB, and the current noise sound pressure level is within the target range.

[0079] S6: The horn is hit to obtain the modal value F1 of 28Hz. The bracket structure is optimized by means of CAE analysis to achieve the same modal value as F1 when the horn is mounted on the original mounting position of the bracket. The optimized bracket is assembled to the vehicle.

[0080] At this time, the bracket structure has been locked and does not need to be redesigned. Only local adjustments are made to the shape, thickness, and reinforcement layout of the bracket on the basis of the existing structure to achieve the same modal value as F1 when the horn is mounted on the original mounting position of the bracket. The optimized bracket is assembled to the vehicle. The optimization is completed. At this time, the vibration and noise comfort caused by the horn of the vehicle are balanced.

[0081] The embodiments of the present application can effectively solve the problem of steering wheel vibration caused by pressing the horn by adjusting the mounting position of the bracket on the vehicle body or replacing the horn bracket (structure type). Specifically, in the development process of the vehicle, if the problem of steering wheel vibration caused by the horn occurs, if the structure near the mounting point of the vehicle body is strengthened or the transmission path is strengthened, the platform change problem is involved, such as adjusting the objective parameters of the horn, such as voltage, power or horn body structure, which also involves the problem of platform. By the matching method of the vehicle horn and the bracket provided by the embodiments of the present application, the problem can be solved by only changing the mounting point position of the horn system on the vehicle body or the structure of the horn bracket without changing the surrounding parts and the horn body, meeting the safety regulation requirements, electromagnetic compatibility and process. The change range and change cost are minimized, and the implementation switching efficiency is fastest. At the same time, after the horn position is locked in the vibration problem solution, the comfort of the horn sound is considered without changing the position of the horn, avoiding the situation that only the attenuation of vibration is considered to cause the simultaneous attenuation of sound.

[0082] It should be noted that, for the method embodiments, the series of acts / combinations thereof are described for simplicity, but one of ordinary skill in the art should understand that the present embodiments are not limited to the acts / combinations described, as some acts can be performed in other sequences, or in parallel, in accordance with the present embodiments. Also, one of ordinary skill in the art should understand that the embodiments described in the specification are preferred embodiments, and the acts involved are not necessarily required by the present embodiments.

[0083] The present embodiments also provide a storage medium storing computer instructions, when a computer executes the computer instructions, each process of the vehicle horn and bracket matching method embodiments described above is implemented, and the same technical effects are achieved. To avoid repetition, details are not described herein.

[0084] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, etc.

[0085] The present embodiments also provide an electronic device including a processor 7010, a memory 709, a program or instructions stored in the memory 709 and executable on the processor 7010, when the program or instructions are executed by the processor 7010, each process of the vehicle horn and bracket matching method embodiments described above is implemented, and the same technical effects are achieved. To avoid repetition, details are not described herein.

[0086] It should be noted that the electronic device in the present embodiments includes the mobile electronic device and the non-mobile electronic device described above.

[0087] Figure 7 A hardware structure schematic diagram of an electronic device for implementing the present embodiments. The electronic device 700 includes, but is not limited to, a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 7010, etc.

[0088] Those skilled in the art can understand that the electronic device 700 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 7010 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. Figure 7The electronic device structure shown in the figures does not constitute a limitation on the electronic device, which can include more or fewer components than shown, or combine some components, or arrange the components differently, and so on, which will not be described here again. The embodiment of the present application further provides a computer program product, which comprises computer programs / instructions, and when the computer programs / instructions are executed by a processor, each process of the matching method for the vehicle horn and the bracket is realized, and the same technical effects can be achieved, and for the sake of avoiding repetition, details are not described here again.

[0089] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device that includes the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0090] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and the necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the methods described in various embodiments of the present application.

[0091] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims.

Claims

1. A method for matching a vehicle horn and its bracket, characterized in that, The method includes: Obtain the initial vibration value of the steering wheel under sound-emitting conditions when the speaker is mounted on the bracket; Candidate support configurations are selected from a preset support configuration library based on the initial vibration value; the candidate support configurations include candidate installation locations and candidate structure types. Based on preset requirements, the candidate bracket configurations are screened, and the brackets that meet the preset requirements are determined as the matching brackets. The noise sound pressure level of the driver is obtained when the speaker is installed on the matching bracket under the sound output condition. When the noise sound pressure level is within a preset range, the target modal value of the speaker is obtained when the speaker is installed on the matching bracket, and the structural parameters of the matching bracket are adjusted according to the target modal value to obtain a target bracket that matches the speaker.

2. The method according to claim 1, characterized in that, The support configuration library includes multiple installation locations and multiple structural types. The step of filtering candidate support configurations from the preset support configuration library based on the initial vibration value includes: When the initial vibration value is greater than or equal to the preset vibration value, the installation position and the structure type are selected from the support configuration library to generate multiple intermediate support configurations; The candidate support configuration is selected from multiple intermediate support configurations based on the preset vibration value.

3. The method according to claim 2, characterized in that, The process of selecting the candidate support configuration from multiple intermediate support configurations based on the preset vibration value includes: When the speaker is installed on the bracket configured with the intermediate bracket, the vibration value of the center of the steering wheel is obtained under sound emission conditions; The intermediate support configuration with an intermediate vibration value less than the preset vibration value is determined as the candidate support configuration.

4. The method according to claim 1, characterized in that, The preset requirements include sound pressure level requirements, compatibility requirements, and installation requirements. Based on these preset requirements, the candidate bracket configurations are screened, and brackets that meet the preset requirements are identified as the matching brackets. The noise sound pressure level of the driver under sound emission conditions is obtained when the speaker is installed on the matching bracket, including: For each of the candidate bracket configurations, when the speaker is installed on a bracket using the candidate bracket configuration, the vehicle sound pressure level at a preset position outside the vehicle under sound emission conditions, the compatibility result between the vehicle function and the speaker, and the component installation space around the candidate mounting position are obtained. The candidate bracket configurations that meet the sound pressure requirements of the vehicle, the compatibility requirements of the compatibility results, and the installation requirements of the parts are selected as the bracket configurations to be matched. The brackets using the bracket configurations to be matched are determined as the brackets to be matched. The noise sound pressure level of the driver is obtained when the speaker is installed on the bracket to be matched under the sound output condition.

5. The method according to claim 1, characterized in that, When the noise sound pressure level is within a preset range, the step of acquiring the target modal value of the speaker when it is installed on the matching bracket, and adjusting the structural parameters of the matching bracket according to the target modal value to obtain a target bracket that matches the speaker, includes: When the noise sound pressure level is within a preset range, the speaker installed on the matching bracket is tested based on the hammer impact modal test to obtain the target modal value; Adjust the structural parameters of the bracket to be matched according to the target modal value to obtain a target bracket that matches the speaker.

6. The method according to claim 5, characterized in that, The step of adjusting the structural parameters of the bracket to be matched according to the target modal value to obtain a target bracket that matches the speaker includes: Construct a stent model corresponding to the stent to be matched, and use the structural parameters of the stent to be matched as variables of the stent model; The matching operation is performed iteratively. In each iteration, the following operation is performed: Simulation analysis was performed to obtain the first modal value corresponding to the scaffold model; When the first modal value matches the target modal value, the variable corresponding to the scaffold model is determined as the structural parameter of the target scaffold, and the iteration ends. Otherwise, the variables of the scaffold model are adjusted to obtain a new scaffold model, and the next iteration is executed again.

7. The method according to claim 1, characterized in that, The method further includes: When the noise sound pressure level is not within the preset range, the speaker installation position on the bracket to be matched is adjusted iteratively and a noise test is conducted to obtain a new noise sound pressure level until the new noise sound pressure level is within the preset range. The adjusted speaker installation position is then determined as the target installation position. Obtain the second modal value of the speaker installed at the target installation location, and adjust the structural parameters of the bracket to be matched according to the second modal value to obtain a target bracket that matches the speaker.

8. A storage medium, characterized in that, The storage medium stores computer instructions, which, when executed by the computer, are used to perform a matching method for a vehicle horn and bracket as described in any one of claims 1-7.

9. An electronic device, characterized in that, Includes at least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, which, when executed by the at least one processor, enables the at least one processor to perform a matching method for a vehicle horn and bracket as described in any one of claims 1-7.

10. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements a matching method for a vehicle horn and bracket as described in any one of claims 1-7.

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