Vehicle passing noise testing method and system, electronic equipment and storage medium

Abstract

The invention relates to a passing noise testing method and system of a vehicle, electronic equipment and a storage medium. The testing method comprises the steps that the vehicle speed of the vehicle during accelerated driving at different gears is obtained, and the actual accelerated speed of the vehicle at the different gears is determined; determining a test gear of the vehicle according to the actual acceleration; under the test gear, obtaining the passing noise outside the vehicle when the vehicle is subjected to the acceleration test, the constant speed test and the sliding test; the passing noise outside the vehicle is corrected; and obtaining final passing noise based on the corrected passing noise outside the vehicle. According to the scheme, by determining the gear of which the real acceleration is tested, it can be ensured that the measured noise level is the real performance of the vehicle under the gear and the acceleration, and finally noise correction is conducted through noise of different driving modes, so that other interference factors in the testing process are eliminated, and accurate vehicle passing noise is obtained.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of vehicle testing, and in particular, relates to a vehicle pass-by noise testing method, system, electronic equipment and storage medium. Background Art

[0003] Some professional testing agencies have advanced testing equipment and professional technicians, and can provide high-quality noise testing services. However, these agencies usually charge high fees, the parameter control process is complex, the test parameter algorithm and the test result algorithm are cumbersome, and require more human, material and other test resources, and the test cycle is long. Summary of the invention

[0004] To solve the above problems, the present disclosure provides a vehicle pass-by noise test method, system, electronic device and storage medium. By determining the gear position of the real acceleration being tested, the scheme can ensure that the measured noise level is the real performance of the vehicle under the gear position and acceleration, and finally perform noise correction through the noise of different driving modes, thereby eliminating other interference factors in the test process and obtaining accurate vehicle pass-by noise.

[0005] In order to solve the above technical problems, the present invention provides a vehicle pass-by noise testing method in a first aspect, the method comprising:

[0006] Acquiring the vehicle speed of the vehicle accelerating at different gears, and determining the actual acceleration of the vehicle at different gears according to the vehicle speed;

[0007] Determine the test gear of the vehicle according to the actual acceleration; in the test gear, obtain a first vehicle exterior passing noise when the vehicle is performing an acceleration test, a second vehicle exterior passing noise when the vehicle is performing a uniform speed test, and a third vehicle exterior passing noise when the vehicle is performing a coasting test;

[0008] Correcting the first exterior vehicle passing noise and the second exterior vehicle passing noise by using the third exterior vehicle passing noise;

[0009] The final pass-by noise is calculated based on the corrected first exterior vehicle pass-by noise and the second exterior vehicle pass-by noise.

[0010] According to a preferred embodiment of the present invention, determining the test gear of the vehicle according to the actual acceleration includes:

[0011] Calculating a power-to-weight ratio based on the engine power of the vehicle and the total mass of the vehicle;

[0012] determining a target acceleration and a reference acceleration of the vehicle based on the power-to-mass ratio;

[0013] Each of the actual accelerations is compared with the target acceleration and the reference acceleration, and a test gear is determined according to the comparison result.

[0014] According to a preferred embodiment of the present invention, the comparing each of the actual accelerations with the target acceleration and the reference acceleration, and determining the test gear according to the comparison results, comprises:

[0015] comparing the actual acceleration of the vehicle with the target acceleration and a reference acceleration;

[0016] If the actual acceleration a corresponding to the i-th gear of the vehicle i The relative deviation from the reference acceleration is less than the preset deviation, and a i If the acceleration is less than the preset standard acceleration, the i-th gear is used as the test gear;

[0017] If the actual acceleration a corresponding to the i+1th gear of the vehicle i+1 is less than the reference acceleration, and the reference acceleration is less than a i , and a i If the acceleration is less than the preset standard acceleration, the i-th gear and the i+1-th gear are used as test gears;

[0018] If a i Greater than the preset standard acceleration, and a i+1 If the actual acceleration is greater than the target acceleration, the gear in which the actual acceleration is less than the preset standard acceleration is used as the test gear;

[0019] If a i Greater than the preset standard acceleration, and a i+1 If the acceleration is greater than the target acceleration, the i-th gear and the i+1-th gear are used as test gears.

[0020] According to a preferred embodiment of the present invention, the testing method further comprises:

[0021] When the vehicle has only one gear, the gear is used as a test gear.

[0022] According to a preferred embodiment of the present invention, obtaining the vehicle speed of the vehicle accelerating in different gears includes:

[0023] When the vehicle enters the vehicle test section at different gears, the accelerator pedal is depressed, and a first vehicle speed signal and a first accelerator pedal signal are recorded; when the vehicle exits the vehicle test section, the accelerator pedal is released, and a second vehicle speed signal and a second accelerator pedal signal are recorded;

[0024] The vehicle speed of the vehicle accelerating in different gears is calculated according to the first vehicle speed signal, the first accelerator pedal signal, the second vehicle speed signal and the second accelerator pedal signal.

[0025] According to a preferred embodiment of the present invention, the testing method further comprises:

[0026] When the vehicle passes through the middle position of the test section, the vehicle speed meets the preset test requirements.

[0027] According to a preferred embodiment of the present invention, the obtaining of a first vehicle exterior pass-by noise when the vehicle is performing an acceleration test, a second vehicle exterior pass-by noise when the vehicle is performing a uniform speed test, and a third vehicle exterior pass-by noise when the vehicle is performing a coasting test includes:

[0028] respectively acquiring the first exterior vehicle passing noise, the second exterior vehicle passing noise, and the third exterior vehicle passing noise by at least two sound level meters;

[0029] averaging each of the first vehicle exterior pass-by noises to obtain the first vehicle exterior pass-by noise;

[0030] averaging each of the second vehicle exterior pass-by noises to obtain the second vehicle exterior pass-by noise;

[0031] The third exterior vehicle pass-by noise is obtained by averaging each of the third exterior vehicle pass-by noises.

[0032] In order to solve the above technical problems, the second aspect of the present invention provides a vehicle passing noise test system, the test system comprising:

[0033] an acceleration determination module, used to obtain the vehicle speed of the vehicle accelerating in different gears, and determine the actual acceleration of the vehicle in different gears according to the vehicle speed;

[0034] A passing noise acquisition module is used to determine a test gear of the vehicle according to the actual acceleration; in the test gear, obtain a first vehicle exterior passing noise when the vehicle is performing an acceleration test, a second vehicle exterior passing noise when the vehicle is performing a uniform speed test, and a third vehicle exterior passing noise when the vehicle is performing a coasting test;

[0035] a noise correction module, configured to correct the first exterior vehicle passing noise and the second exterior vehicle passing noise by using the third exterior vehicle passing noise;

[0036] The pass-by noise calculation module is used to calculate the final pass-by noise based on the corrected first exterior pass-by noise and the second exterior pass-by noise.

[0037] In order to solve the above technical problem, the third aspect of the present invention provides an electronic device, comprising:

[0038] Processor; and

[0039] A memory storing computer executable instructions, wherein when the computer executable instructions are executed, the processor executes the method described in any one of the above embodiments.

[0040] In order to solve the above technical problems, the fourth aspect of the present invention proposes a computer storage medium, wherein the computer storage medium stores one or more programs, and when the one or more programs are executed by a processor, the method described in any one of the above embodiments is implemented.

[0041] Compared with the prior art, the present invention has the following advantages: the present invention determines the actual acceleration of the vehicle at different gears by obtaining the vehicle speed when the vehicle accelerates at different gears, and determines the gear for testing the vehicle by the actual acceleration. The gear to be tested is determined by the actual acceleration, which ensures that the noise level measured is the true performance of the vehicle at the gear and acceleration, and then obtains the vehicle's exterior passing noise during acceleration, constant speed, and coasting at the test gear. The vehicle's exterior passing noise during acceleration and constant speed is corrected by the vehicle's exterior passing noise during coasting, and other interference factors during the test process are eliminated to obtain accurate vehicle exterior passing noise during acceleration and constant speed, and finally calculate the vehicle's passing noise. The present scheme is simple, efficient, and easy to conduct experiments, which is convenient for conducting passing noise scheme adjustment experiments.

[0042] Other features and advantages of the present disclosure will be described in the following description, and partly become apparent from the description, or be understood by implementing the present disclosure. The purpose and other advantages of the present disclosure can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A first flow chart of a vehicle pass-by noise test method according to an embodiment of the present disclosure is shown;

[0045] Figure 2 A schematic plan view of a vehicle test section according to an embodiment of the present disclosure is shown;

[0046] Figure 3 A second flow chart of a vehicle pass-by noise test method according to an embodiment of the present disclosure is shown;

[0047] Figure 4 A schematic flow chart of a method for determining a test gear according to an embodiment of the present disclosure is shown;

[0048] Figure 5 A block diagram of a vehicle pass-by noise test system according to an embodiment of the present disclosure is shown;

[0049] Figure 6 A schematic diagram of the structure of an electronic device according to an embodiment of the present disclosure is shown.

[0050] In the figure: 1: first speed measuring device; 2: second speed measuring device; 3: first sound level meter; 4: second sound level meter. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0052] The same reference numerals in the drawings represent the same or similar elements, components or parts, and thus the repeated description of the same or similar elements, components or parts may be omitted below. It should also be understood that although the first, second, third and other attributives representing the numbers may be used herein to describe various devices, elements, components or parts, these devices, elements, components or parts should not be limited by these attributives. In other words, these attributives are only used to distinguish one from another. For example, the first device may also be called the second device, but it does not deviate from the essential technical solution of the present invention. In addition, the terms "and / or" and "and / or" refer to all combinations including any one or more of the listed items.

[0053] See also Figure 1 , Figure 1 FIG. 1 is a flow chart of a vehicle passing noise test method provided by the present invention. Figure 1 As shown, the method includes:

[0054] S11. Obtain the vehicle speed when the vehicle accelerates in different gears, and determine the actual acceleration of the vehicle in different gears according to the vehicle speed.

[0055] In this embodiment, the speed range of the vehicle when accelerating in different gears is affected by various factors such as vehicle type, engine performance, gearbox design, and driver's driving habits.

[0056] In this embodiment, in this solution, the actual acceleration of the vehicle in different gears can be determined by acquiring the vehicle speed of the vehicle during acceleration.

[0057] S12. Determine a test gear of the vehicle according to actual acceleration; in the test gear, obtain a first vehicle exterior pass-by noise when the vehicle is performing an acceleration test, a second vehicle exterior pass-by noise when the vehicle is performing a uniform speed test, and a third vehicle exterior pass-by noise when the vehicle is performing a coasting test.

[0058] In this embodiment, the actual acceleration of the vehicle in different gears can be measured by setting the vehicle test interval, for example, Figure 2 As shown, the test section is provided with AA' line and BB' line perpendicular to the test road, and the vehicle speed when the vehicle passes through the AA' line and the BB' line is measured by a first speed measuring device 1 arranged on the AA' line and a second speed measuring device 2 arranged on the BB' line. At the same time, the vehicle accelerator pedal signal can also be obtained to determine the specific time when the accelerator pedal is pressed and released, thereby calculating the actual acceleration of the vehicle in different gears.

[0059] In this embodiment, a noise collection device can also be set in the test section to collect the noise during the vehicle test. The noise collection device can be a sound level meter set on both sides of the vehicle to measure the vehicle passing noise. For example, the first vehicle passing noise, the second vehicle passing noise and the third vehicle passing noise are obtained by at least two sound level meters respectively; the first vehicle passing noise is averaged to obtain the first vehicle passing noise; the second vehicle passing noise is averaged to obtain the second vehicle passing noise; the third vehicle passing noise is averaged to obtain the third vehicle passing noise. Specifically, it can be a first sound level meter 3 and a second sound level meter 4 set on both sides of the PP' line in the middle of the test road. The connection line of the first sound level meter 3 and the second sound level meter 4 is perpendicular to the vehicle driving center line CC'. More specifically, the distance between the two sound level meters is set to 15 meters, and each sound level meter is 7.5 meters away from the vehicle driving center line and 1.2 meters above the ground. The noise detected by the first sound level meter 3 and the noise detected by the second sound level meter 4 are averaged to obtain the noise at this time.

[0060] Specifically, when the vehicle enters the vehicle test section with different gears, the accelerator pedal is depressed and a first vehicle speed signal and a first accelerator pedal signal are recorded; when the vehicle exits the vehicle test section, the accelerator pedal is released and a second vehicle speed signal and a second accelerator pedal signal are recorded; the vehicle speed of the vehicle accelerating in different gears is calculated based on the first vehicle speed signal, the first accelerator pedal signal, the second vehicle speed signal and the second accelerator pedal signal.

[0061] In this embodiment, the first vehicle speed signal and the second vehicle speed signal can determine the vehicle speed change within the vehicle test interval, while the first pedal signal and the second pedal signal can determine the specific throttle control time difference, and the vehicle acceleration can be calculated through the vehicle speed change and the time difference.

[0062] In this embodiment, in this scheme, pressing the accelerator pedal and releasing the accelerator pedal can be achieved by pre-setting a mechanical control device, and when the mechanical control device realizes pressing the accelerator pedal and releasing the accelerator pedal, a first pedal signal and a second pedal signal are generated; a detection device can also be set on the accelerator pedal on the vehicle, and the detection device can detect whether the accelerator pedal is pressed or released, and then generate corresponding first pedal signals and second pedal signals accordingly. Subsequently, the first pedal signal and the second pedal signal can be received by a CAN signal recorder as basic data for other data processing.

[0063] In this embodiment, in order to comply with relevant regulatory requirements and the impact of noise during actual use of the vehicle in urban areas, when the vehicle is subjected to acceleration tests, uniform speed tests and coasting tests in different gears, it is ensured that the vehicle speed meets the preset test requirements when the vehicle passes through the middle position of the test section. Specifically, the preset test requirements may be that the vehicle speed meets 50±1km / h. The vehicle speed on urban roads is generally limited to 50km / h. In this solution, noise testing is performed at 50km / h, which can meet the requirements most of the time.

[0064] S13: Correct the first exterior vehicle pass-by noise and the second exterior vehicle pass-by noise by using the third exterior vehicle pass-by noise.

[0065] In this embodiment, the main purpose of the coasting vehicle exterior noise test is to measure and evaluate the external noise generated by the vehicle during the coasting process, including tire noise, wind noise, engine noise, etc., so that the vehicle manufacturer can understand the noise conditions of the vehicle in actual use, thereby optimizing the vehicle design and improving the vehicle performance.

[0066] In the coasting test, the vehicle is accelerated to a predetermined speed and then driven to the test area. Then the gear is disengaged, the engine is disengaged, and all other auxiliary systems not related to safety are turned off. The vehicle continues to coast only on the kinetic energy until it stops. During the coasting process, the hub surface temperature at the beginning and end of the coasting test, as well as the noise data during the coasting process, are recorded. These data will be used for subsequent temperature correction and noise characteristic analysis. This correction is intended to more accurately reflect the noise characteristics of the tire under actual driving conditions and eliminate other interference factors during the test process.

[0067] S14: Calculate and obtain a final pass-by noise based on the corrected first exterior pass-by noise and the second exterior pass-by noise.

[0068] In this embodiment, when calculating the final passing noise, we usually consider the vehicle noise under two working conditions: accelerating and constant speed driving. On urban roads, the vehicle noise that may affect others is basically the noise of accelerating vehicles and the noise of constant speed vehicles. After the first vehicle exterior passing noise and the second vehicle exterior passing noise are corrected by the noise of the coasting vehicle, a more accurate noise situation is retained.

[0069] In this embodiment, the vehicle passing noise may be calculated by weighted averaging the first vehicle exterior passing noise and the second vehicle exterior passing noise. Specifically, the final passing noise result is as follows:

[0070] L 最终结果 =L 加速 -kp(L 加速 -L 匀速 );

[0071] Among them, L 最终结果 is the final pass-through noise, L 加速 is the first vehicle exterior passing noise, L 匀速 is the second vehicle exterior passing noise, kp is the weighting coefficient; kp can be calculated through the relationship between the passing noise finally determined in the historical test records and the passing noise during acceleration and the passing noise during uniform speed driving, and can also be set by relevant staff.

[0072] In this scheme, kp can be calculated by the following formula:

[0073] kp=1-(a urban / a test );

[0074] Among them, a urban is the actual acceleration of the city, a test is the test reference acceleration;

[0075] In this solution, by collecting data on the actual urban acceleration and test reference acceleration of the vehicle, it can be finally obtained that the weighting coefficient kp can be 0.34.

[0076] The present disclosure determines the actual acceleration of the vehicle at different gears by obtaining the vehicle speed when the vehicle accelerates at different gears, and determines the gear for testing the vehicle by the actual acceleration. The gear to be tested is determined by the actual acceleration, which can ensure that the noise level measured is the real performance of the vehicle at the gear and acceleration, and then obtains the vehicle's external passing noise during acceleration, constant speed, and coasting at the test gear. The vehicle's external passing noise during acceleration and constant speed is corrected by the vehicle's external passing noise during coasting, and other interference factors during the test process are eliminated to obtain accurate vehicle's external passing noise during acceleration and constant speed, and finally calculate the vehicle's passing noise. The present solution is simple, efficient, and easy to carry out, which is convenient for carrying out the passing noise solution adjustment test.

[0077] See also Figure 3 , Figure 3 The second flow chart of a vehicle passing noise test method provided by the present invention is as follows: Figure 3 As shown, the method includes:

[0078] S21. Calculate the power-to-weight ratio based on the engine power of the vehicle and the total mass of the vehicle.

[0079] In this embodiment, the power-to-weight ratio refers to the ratio between the power provided by the engine and the mass of the engine (or vehicle). It measures the amount of power that can be obtained per unit mass and is a key indicator for evaluating engine performance. In terms of calculation, the power-to-weight ratio does not take into account factors such as the size of the vehicle and the air resistance it brings, and is directly obtained by dividing the engine power by the mass of the vehicle. The power-to-weight ratio PMR is obtained based on the engine power and the total mass of the vehicle, where the power-to-weight ratio PMR = engine power / (curb mass+75Kg driver mass)*1000.

[0080] S22. Determine a target acceleration and a reference acceleration of the vehicle based on the power-to-mass ratio.

[0081] In this embodiment, the target acceleration a is calculated according to the power-to-mass ratio PMR, wherein the target acceleration a=0.63×log10(PMR)-0.09; and the reference acceleration a is calculated. ref ,a ref =1.59×log10(PMR)-1.14.

[0082] S23, comparing each actual acceleration with the target acceleration and the reference acceleration respectively, and determining the test gear according to the comparison result.

[0083] In this embodiment, by comparing the actual acceleration with the target acceleration and the reference acceleration, the gear that best matches the actual acceleration is determined as the test gear. This ensures that the noise level measured in the test gear is the actual performance of the vehicle in this gear and acceleration, thereby achieving more accurate noise testing.

[0084] In this embodiment, when the vehicle has only one gear, this gear only needs to be used as the test gear, and there is no need to compare the actual acceleration with the target acceleration and the reference acceleration.

[0085] In this embodiment, if Figure 4 As shown, the method for determining the test gear in this step includes the following steps:

[0086] S31. Compare the actual acceleration of the vehicle with the target acceleration and the reference acceleration.

[0087] S32, if the actual acceleration a corresponding to the i-th gear of the vehicle i The relative deviation from the reference acceleration is less than the preset deviation, and a i If the acceleration is less than the preset standard acceleration, the i-th gear will be used as the test gear.

[0088] S33, if the actual acceleration a corresponding to the i+1th gear of the vehicle i+1 is less than the reference acceleration, and the reference acceleration is less than a i , and a i If the acceleration is less than the preset standard acceleration, the i-th gear and the i+1-th gear will be used as test gears.

[0089] S34, if a i Greater than the preset standard acceleration, and a i+1 If the actual acceleration is greater than the target acceleration, the gear in which the actual acceleration is less than the preset standard acceleration is used as the test gear.

[0090] S35, if a i Greater than the preset standard acceleration, and a i+1 If the acceleration is greater than the target acceleration, the i-th gear and the i+1-th gear will be used as test gears.

[0091] In this embodiment, when the relative deviation between the actual acceleration corresponding to the i-th gear of the vehicle and the reference acceleration is less than the preset deviation, the gear can be directly used as the test gear. At this time, in order to avoid abnormalities, the size of the actual acceleration and the preset standard acceleration is determined. When the actual acceleration is less than the preset standard acceleration, the i-th gear is used as the test gear.

[0092] In this embodiment, the preset standard acceleration may be 2.0 m / s 2 , if a i+1ref i <2.0m / s 2 The i-th gear and the i+1-th gear are used for testing respectively; when a i >2.0m / s 2 And a i+1 When the acceleration is greater than the target acceleration, the acceleration <2.0m / s is used first. 2 The block test; when a i >2.0m / s 2 And a i+1 When it is less than or equal to the target acceleration, the test is performed at the i-th gear and the i+1-th gear.

[0093] In a specific embodiment, the method is described in detail. Wherein: the vehicle assembly mass is 1833Kg; PMR = 98.01KW / t; the target acceleration a is 1.16m / s 2 , reference acceleration a ref The vehicle length is 4.961m. The acceleration of the third gear is 1.77m / s2, and the acceleration of the fourth gear is 1.05m / s2, so the third gear is selected for the passing noise test;

[0094] The acceleration vehicle exterior noise test, the uniform speed vehicle exterior noise test and the coasting vehicle exterior noise test were carried out, and the results are shown in Table 1, Table 2 and Table 3. Table 1 Acceleration vehicle exterior noise measurement results, Table 2 Uniform speed vehicle exterior noise test results, Table 3 Vehicle coasting vehicle exterior noise test results;

[0095] Table 1:

[0096] VAA VPP VBB aWOT L left dB (A) after correction L left dB (A) after correction 46.3 50.3 57.3 1.78 69.5 69.6 46.2 49.8 57.1 1.76 69.5 69.4 45.9 49.7 57.2 1.82 69.5 69.6 46.5 50.7 57.5 1.79 69.5 69.5 one one one 1.79 69.5 69.5

[0097] Table 2:

[0098] VA VPP VBB L left dB (A) after correction L left dB (A) after correction 49.9 49.9 49.8 66.3 66.6 50.4 50.5 50.5 66.6 66.6 50.1 50.2 50.4 66.5 66.5 49.6 49.8 49.9 66.4 66.4 one one 66:5 66:5

[0099] Table 3:

[0100] VAA Vpp VBB L Left dB(A) L Left dB(A) 41.08 62.3 62.7 44.23 62.8 63.4 47.33 63.5 63.9 51.41 64.3 64.8 54.74 65.4 65.8

[0101] See also Figure 5 , Figure 5 The block diagram of a vehicle passing noise test system provided by the present invention is as follows: Figure 5 As shown, the test system includes: an acceleration determination module 11 , a pass-by noise acquisition module 12 , a noise correction module 13 and a pass-by noise calculation module 14 .

[0102] In this embodiment, the acceleration determination module 11 is used to obtain the vehicle speed of the vehicle accelerating in different gears, and determine the actual acceleration of the vehicle in different gears according to the vehicle speed.

[0103] ​​In this embodiment, the passing noise acquisition module 12 is used to determine the test gear of the vehicle according to the actual acceleration; in the test gear, the first vehicle exterior passing noise when the vehicle is performing an acceleration test, the second vehicle exterior passing noise when the vehicle is performing a uniform speed test, and the third vehicle exterior passing noise when the vehicle is performing a coasting test are obtained.

[0104] In this embodiment, the noise correction module 13 is used to correct the first exterior vehicle pass-by noise and the second exterior vehicle pass-by noise by using the third exterior vehicle pass-by noise.

[0105] In this embodiment, the pass-by noise calculation module 14 is used to calculate the final pass-by noise based on the corrected first exterior pass-by noise and the second exterior pass-by noise.

[0106] In this embodiment, the noise acquisition module 12 includes: a test gear determination unit, which is used to calculate the power-to-weight ratio according to the engine power of the vehicle and the total mass of the vehicle; determine the target acceleration and reference acceleration of the vehicle based on the power-to-weight ratio; compare each actual acceleration with the target acceleration and the reference acceleration, and determine the test gear according to the comparison result.

[0107] In this embodiment, the test gear determination unit is specifically used to compare the actual acceleration of the vehicle with the target acceleration and the reference acceleration; if the actual acceleration a corresponding to the i-th gear of the vehicle is i The relative deviation from the reference acceleration is less than the preset deviation, and a i If the actual acceleration a corresponding to the i+1th gear of the vehicle is less than the preset standard acceleration, the i-th gear is used as the test gear; i+1 is less than the reference acceleration, and the reference acceleration is less than a i , and a i If the acceleration is less than the preset standard acceleration, the i-th gear and the i+1-th gear are used as test gears; if a i Greater than the preset standard acceleration, and a i+1 If the actual acceleration is less than the preset standard acceleration, the gear position with the actual acceleration less than the preset standard acceleration is used as the test gear position; if a i Greater than the preset standard acceleration, and a i+1 If the acceleration is greater than the target acceleration, the i-th gear and the i+1-th gear will be used as test gears.

[0108] In this embodiment, the test gear determination unit is specifically configured to use the gear as the test gear when the vehicle has only one gear.

[0109] In this embodiment, the acceleration determination module 11 is specifically used to press the accelerator pedal when the vehicle enters the vehicle test section with different gears, and record the first vehicle speed signal and the first accelerator pedal signal; when the vehicle exits the vehicle test section, release the accelerator pedal, and record the second vehicle speed signal and the second accelerator pedal signal; and calculate the vehicle speed of the vehicle accelerating in different gears based on the first vehicle speed signal, the first accelerator pedal signal, the second vehicle speed signal, and the second accelerator pedal signal.

[0110] In this embodiment, when the vehicle passes through the middle position of the test section, the vehicle speed meets the preset test requirements.

[0111] In this embodiment, the passing noise acquisition module 12 is specifically used to respectively obtain the first exterior passing noise, the second exterior passing noise and the third exterior passing noise through at least two sound level meters; average the first exterior passing noises to obtain the first exterior passing noise; average the second exterior passing noises to obtain the second exterior passing noise; and average the third exterior passing noises to obtain the third exterior passing noise.

[0112] like Figure 6 As shown, an embodiment of the present invention provides an electronic device, including a processor 1110, a communication interface 1120, a memory 1130 and a communication bus 1140, wherein the processor 1110, the communication interface 1120, and the memory 1130 communicate with each other through the communication bus 1140;

[0113] Memory 1130, used for storing computer programs;

[0114] The processor 1110 is used to implement any of the above-mentioned testing methods when executing the program stored in the memory 1130.

[0115] In the electronic device provided by the embodiment of the present invention, the processor 1110 obtains the vehicle speed of the vehicle accelerating in different gears by executing the program stored in the memory 1130, determines the actual acceleration of the vehicle in different gears according to the vehicle speed; determines the test gear of the vehicle according to the actual acceleration; in the test gear, obtains the first vehicle exterior passing noise when the vehicle is performing an acceleration test, the second vehicle exterior passing noise when the vehicle is performing a uniform speed test, and the third vehicle exterior passing noise when the vehicle is performing a coasting test; corrects the first vehicle exterior passing noise and the second vehicle exterior passing noise by the third vehicle exterior passing noise; and calculates the final passing noise based on the corrected first vehicle exterior passing noise and second vehicle exterior passing noise.

[0116] The communication bus 1140 mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus 1140 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0117] The communication interface 1120 is used for communication between the above electronic device and other devices.

[0118] The memory 1130 may include a random access memory 1130 (RAM), or may include a non-volatile memory 1130 (non-volatile memory), such as at least one disk memory 1130. Optionally, the memory 1130 may also be at least one storage device located away from the processor 1110.

[0119] The above-mentioned processor 1110 can be a general-purpose processor 1110, including a central processing unit 1110 (CPU), a network processor 1110 (NP), etc.; it can also be a digital signal processor 1110 (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0120] An embodiment of the present invention provides a computer-readable storage medium, which stores one or more programs. The one or more programs can be executed by one or more processors 1110 to implement the testing method of any of the above embodiments.

[0121] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk SolidStateDisk (SSD)), etc.

[0122] Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A vehicle passing noise test method, characterized in that: The test method includes: Acquiring the vehicle speed of the vehicle accelerating at different gears, and determining the actual acceleration of the vehicle at different gears according to the vehicle speed; Determine the test gear of the vehicle according to the actual acceleration; in the test gear, obtain a first vehicle exterior passing noise when the vehicle is performing an acceleration test, a second vehicle exterior passing noise when the vehicle is performing a uniform speed test, and a third vehicle exterior passing noise when the vehicle is performing a coasting test; Correcting the first exterior vehicle passing noise and the second exterior vehicle passing noise by using the third exterior vehicle passing noise; The final pass-by noise is calculated based on the corrected first exterior vehicle pass-by noise and the second exterior vehicle pass-by noise.

2. The testing method according to claim 1, characterized in that: The step of determining the test gear of the vehicle according to the actual acceleration includes: Calculating a power-to-weight ratio based on the engine power of the vehicle and the total mass of the vehicle; determining a target acceleration and a reference acceleration of the vehicle based on the power-to-mass ratio; Each of the actual accelerations is compared with the target acceleration and the reference acceleration, and a test gear is determined according to the comparison result.

3. The testing method according to claim 2, characterized in that: The comparing each of the actual accelerations with the target acceleration and the reference acceleration, and determining the test gear according to the comparison results, comprises: comparing the actual acceleration of the vehicle with the target acceleration and a reference acceleration; If the actual acceleration a corresponding to the i-th gear of the vehicle i The relative deviation from the reference acceleration is less than the preset deviation, and a i If the acceleration is less than the preset standard acceleration, the i-th gear is used as the test gear; If the actual acceleration a corresponding to the i+1th gear of the vehicle i+1 is less than the reference acceleration, and the reference acceleration is less than a i , and a i If the acceleration is less than the preset standard acceleration, the i-th gear and the i+1-th gear are used as test gears; If a i Greater than the preset standard acceleration, and a i+1 If the actual acceleration is greater than the target acceleration, the gear in which the actual acceleration is less than the preset standard acceleration is used as the test gear; If a i Greater than the preset standard acceleration, and a i+1 If the acceleration is greater than the target acceleration, the i-th gear and the i+1-th gear are used as test gears.

4. The testing method according to claim 1, characterized in that: The test method also includes: When the vehicle has only one gear, the gear is used as a test gear.

5. The testing method according to claim 1, characterized in that: The obtaining of the vehicle speed of the vehicle accelerating in different gears includes: When the vehicle enters the vehicle test section at different gears, the accelerator pedal is depressed, and a first vehicle speed signal and a first accelerator pedal signal are recorded; when the vehicle exits the vehicle test section, the accelerator pedal is released, and a second vehicle speed signal and a second accelerator pedal signal are recorded; The vehicle speed of the vehicle accelerating in different gears is calculated according to the first vehicle speed signal, the first accelerator pedal signal, the second vehicle speed signal and the second accelerator pedal signal.

6. The testing method according to claim 5, characterized in that: The test method also includes: When the vehicle passes through the middle position of the test section, the vehicle speed meets the preset test requirements.

7. The testing method according to any one of claims 1 to 6, characterized in that: The obtaining of a first vehicle exterior passing noise when the vehicle is performing an acceleration test, a second vehicle exterior passing noise when the vehicle is performing a uniform speed test, and a third vehicle exterior passing noise when the vehicle is performing a coasting test includes: respectively acquiring the first exterior vehicle passing noise, the second exterior vehicle passing noise, and the third exterior vehicle passing noise by at least two sound level meters; averaging each of the first vehicle exterior pass-by noises to obtain the first vehicle exterior pass-by noise; averaging each of the second vehicle exterior pass-by noises to obtain the second vehicle exterior pass-by noise; The third exterior vehicle pass-by noise is obtained by averaging each of the third exterior vehicle pass-by noises.

8. A vehicle passing noise test system, characterized in that: The test system comprises: an acceleration determination module, used to obtain the vehicle speed of the vehicle accelerating in different gears, and determine the actual acceleration of the vehicle in different gears according to the vehicle speed; A passing noise acquisition module is used to determine a test gear of the vehicle according to the actual acceleration; in the test gear, obtain a first vehicle exterior passing noise when the vehicle is performing an acceleration test, a second vehicle exterior passing noise when the vehicle is performing a uniform speed test, and a third vehicle exterior passing noise when the vehicle is performing a coasting test; a noise correction module, configured to correct the first exterior vehicle passing noise and the second exterior vehicle passing noise by using the third exterior vehicle passing noise; The pass-by noise calculation module is used to calculate the final pass-by noise based on the corrected first exterior pass-by noise and the second exterior pass-by noise.

9. An electronic device, characterized in that: include: processor; as well as A memory storing computer executable instructions which, when executed, cause the processor to perform the method according to any one of claims 1-7.

10. A computer storage medium, characterized in that: in, The computer storage medium stores one or more programs, and when the one or more programs are executed by a processor, the method of any one of claims 1 to 7 is implemented.

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