Isolation feeling evaluation method, device and system

Abstract

The invention provides an isolation feeling evaluation method, device and system. The method comprises the steps that a vehicle is tested based on multiple dimensions such as vehicle air tightness, vehicle sound reduction index, key area sound reduction index, sound pressure level and voice definition; and evaluating the isolation feeling of the vehicle based on a test result. According to the method provided by the invention, the isolation feeling of the vehicle can be evaluated more comprehensively and objectively, and the satisfaction degree of the user is improved.

Description

Technical Field

[0001] The present application relates to the automotive field, and in particular to an isolation assessment method, device and system. Background Art

[0002] With the development of the new energy vehicle market, users have higher and higher requirements for vehicle comfort. Among them, users are particularly demanding on noise. The isolation of a vehicle is one of the key indicators of noise. Vehicles with good isolation will increase users' desire to buy.

[0003] In the related art, the evaluation of the isolation feeling of the vehicle is not comprehensive and objective enough, resulting in inaccurate evaluation results and low user satisfaction. Summary of the invention

[0004] The embodiments of the present application provide a method, device and system for evaluating the sense of isolation of a vehicle, which are helpful to more comprehensively and objectively evaluate the sense of isolation of a vehicle and improve user satisfaction.

[0005] In a first aspect, an embodiment of the present application provides a method for evaluating a sense of isolation, including: testing a vehicle based on multiple dimensions such as vehicle air tightness, vehicle sound insulation, key area sound insulation, sound pressure level, and speech clarity; and evaluating the sense of isolation of the vehicle based on the test results.

[0006] In one possible implementation, the whole vehicle sound insulation is determined by an envelope area of ​​a total sound insulation curve, and the total sound insulation curve is a curve showing how the sound insulation changes with frequency within a preset frequency band.

[0007] In one possible implementation, the key area sound insulation includes at least the front area sound insulation, the side area sound insulation, the floor area sound insulation and the wheel arch area sound insulation.

[0008] In one possible implementation, the key area sound insulation is determined by weighted sum of the sound insulation of the front enclosure area, the sound insulation of the side enclosure area, the sound insulation of the floor area and the sound insulation of the wheel arch area; wherein any one of the front enclosure area, the side enclosure area, the floor area and the wheel arch area includes a weight coefficient corresponding to the area.

[0009] In one possible implementation, the sound insulation level of any one of the front area, the side area, the floor area and the wheel arch area is determined by weighted summation of the sound insulation levels at each frequency; wherein each of the frequencies includes a corresponding weight coefficient.

[0010] In one possible implementation, the sound pressure level and speech clarity are obtained by testing when the vehicle is at a first speed and a second speed; wherein the second speed is greater than the first speed.

[0011] In one possible implementation manner, the test results include the air tightness of the whole vehicle, the sound insulation of the whole vehicle, the sound insulation of the key area, the sound pressure level and the speech clarity. The evaluating the isolation of the vehicle based on the test results includes: evaluating the isolation of the vehicle based on a result obtained by weighted summation of the air tightness of the whole vehicle, the sound insulation of the whole vehicle, the sound insulation of the key area, the sound pressure level and the speech clarity; wherein any dimension of the air tightness of the whole vehicle, the sound insulation of the whole vehicle, the sound insulation of the key area, the sound pressure level and the speech clarity includes a weight coefficient corresponding to the dimension.

[0012] In one possible implementation, the weight coefficient corresponding to the dimension is obtained by analyzing user experience frequency and after-sales data.

[0013] In one possible implementation, the evaluation of the isolation of the vehicle based on a result obtained by weighted summing the whole vehicle air tightness, the whole vehicle sound insulation, the key area sound insulation, the sound pressure level and the speech clarity includes: if the target result is greater than or equal to a first isolation threshold, the vehicle has a good isolation; or, if the target result is greater than a second isolation threshold and less than the first isolation threshold, the vehicle has a medium isolation; or, if the target result is less than or equal to the second isolation threshold, the vehicle has a poor isolation; wherein the target result is a result obtained by weighted summing the whole vehicle air tightness, the whole vehicle sound insulation, the key area sound insulation, the sound pressure level and the speech clarity.

[0014] In a second aspect, an embodiment of the present application provides a sense of isolation assessment device, comprising one or more functional modules, wherein the one or more functional modules are used to execute the sense of isolation assessment method as described in the first aspect.

[0015] In a third aspect, an embodiment of the present application provides a system for assessing a sense of isolation, comprising: a processor and a memory, wherein the memory is used to store a computer program; the processor is used to run the computer program to implement the method for assessing a sense of isolation as described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the system architecture provided for an embodiment of the present application; Figure 2 A schematic diagram of a flow chart of a method for evaluating a sense of isolation provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of an isolation sense assessment device provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of the isolation assessment system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0017] In the embodiments of the present application, unless otherwise specified, the character " / " indicates that the objects before and after the association are in an or relationship. For example, A / B can represent A or B. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone.

[0018] It should be pointed out that the words "first", "second", etc. involved in the embodiments of the present application are only used to distinguish the description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor can they be understood as indicating or implying order.

[0019] In the embodiments of the present application, "at least one" means one or more, and "more" means two or more. In addition, "at least one of the following" or similar expressions refers to any combination of these items, which may include any combination of single items or plural items. For example, at least one of A, B, or C can represent: A, B, C, A and B, A and C, B and C, or A, B and C. Among them, each of A, B, and C can be an element itself, or a set containing one or more elements.

[0020] In the embodiments of the present application, "exemplary", "in some embodiments", "in another embodiment", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0021] In the embodiments of the present application, "of", "corresponding", and "corresponding" can sometimes be used interchangeably. It should be noted that when the distinction between them is not emphasized, the meanings to be expressed are consistent. In the embodiments of the present application, communication and transmission can sometimes be used interchangeably. It should be noted that when the distinction between them is not emphasized, the meanings to be expressed are consistent. For example, transmission can include sending and / or receiving, which can be a noun or a verb.

[0022] The equal to involved in the embodiments of the present application can be used in conjunction with greater than, and is applicable to the technical solution adopted when greater than, and can also be used in conjunction with less than, and is applicable to the technical solution adopted when less than. It should be noted that when equal to is used in conjunction with greater than, it cannot be used in conjunction with less than; when equal to is used in conjunction with less than, it cannot be used in conjunction with greater than.

[0023] With the development of the new energy vehicle market, users have higher and higher requirements for vehicle comfort. Among them, users are particularly demanding on noise. The isolation of a vehicle is one of the key indicators of noise. Vehicles with good isolation will increase users' desire to buy.

[0024] In the related art, the evaluation of the isolation feeling of the vehicle is not comprehensive and objective enough, resulting in inaccurate evaluation results and low user satisfaction.

[0025] Based on the above problems, the present application provides a method for evaluating the sense of isolation, which helps to more comprehensively and objectively evaluate the sense of isolation of the vehicle and improve user satisfaction.

[0026] Figure 1 A system architecture diagram provided for an embodiment of the present application.

[0027] refer to Figure 1 , the system architecture may include a vehicle 10 , a test room 11 , a sound source 12 , and a microphone 13 .

[0028] The test room 11 may be a reverberation room, or a semi-anechoic room, which is not particularly limited in the present embodiment. The vehicle 10 , the sound source 12 , and the microphone 13 may be placed in the test room to test the isolation of the vehicle 10 .

[0029] The sound source 12 may be a spherical sound source, or the sound source 12 may be a volume sound source, which is not particularly limited in the embodiment of the present application. The sound source 12 may be used to simulate environmental noise.

[0030] Microphone 13 may be placed inside and / or outside of vehicle 10 for testing noise.

[0031] Figure 2 A flowchart of an embodiment of the isolation assessment method provided in the present application includes the following steps: Step 201 , testing the vehicle based on multiple dimensions such as vehicle air tightness, vehicle sound insulation, key area sound insulation, sound pressure level, and speech clarity.

[0032] Specifically, the positive pressure method can be used for testing based on the air tightness dimension of the entire vehicle.

[0033] For example, the vehicle can be internally circulated at a pressure of 125 Pa to test the uncontrollable leakage when the pressure relief valve is blocked to obtain the air tightness value of the entire vehicle.

[0034] After the whole vehicle air tightness value is obtained through testing, the whole vehicle air tightness value can be compared with a preset whole vehicle air tightness value, and the quality of the whole vehicle air tightness can be determined based on the comparison result.

[0035] Exemplarily, it is assumed that the first airtightness threshold and the second airtightness threshold are preset airtightness values.

[0036] If the vehicle air tightness value obtained from the test is less than the first air tightness threshold, it can be considered that the leakage is small, that is, the vehicle air tightness is high. If the vehicle air tightness value obtained from the test is greater than or equal to the first air tightness threshold and less than or equal to the second air tightness threshold, it can be considered that the vehicle air tightness is medium. If the air tightness value of the whole vehicle obtained by the test is greater than the second air tightness threshold, it can be considered that the leakage is large, that is, the air tightness of the whole vehicle is low.

[0037] Taking the first air tightness threshold value as 50 and the second air tightness threshold value as 90 as an example, Table 1 exemplarily shows the corresponding relationship between the air tightness value of the whole vehicle and the air tightness degree of the whole vehicle.

[0038] Table 1

[0039] Referring to Table 1, when the air tightness value of the whole vehicle is less than 50, the air tightness degree of the whole vehicle is high; when the air tightness value of the whole vehicle is greater than or equal to 50 and less than or equal to 90, the air tightness degree of the whole vehicle is medium; when the air tightness value of the whole vehicle is greater than 90, the air tightness degree of the whole vehicle is low.

[0040] The test based on the sound insulation dimension of the whole vehicle can be carried out in a reverberation chamber using a spherical sound source.

[0041] Exemplarily, a total of six microphones can be placed at the center of the four wheels of the vehicle, in the middle of the tailgate, and in front of the engine compartment, wherein the microphones can maintain a preset distance (e.g., 1m) from the vehicle body and a preset distance (e.g., 1.1m) from the ground.

[0042] In addition, a microphone can be placed next to the driver's inner ear and next to the right ear of the second row center headrest.

[0043] Four spherical sound sources may be placed at the four corners of the reverberation room, wherein each spherical sound source may be kept at a preset distance (eg, 1 m) or more from the wall.

[0044] Next, the correspondence between the frequency within the preset frequency band and the sound insulation of the entire vehicle can be tested.

[0045] Exemplarily, the preset frequency band may be 200-6300 Hz.

[0046] It can be understood that the above-mentioned preset frequency band of 200-6300 Hz is only an exemplary description and does not constitute a limitation on the embodiments of the present application. In some embodiments, other frequency bands may also be used.

[0047] The curve of frequency and whole vehicle sound insulation can be obtained through the correspondence between the frequency in the preset frequency band and the whole vehicle sound insulation, and the whole vehicle sound insulation in the preset frequency band can be obtained by calculating the envelope area of ​​the curve.

[0048] After the whole vehicle sound insulation value is obtained through testing, the whole vehicle sound insulation value can be compared with the preset sound insulation value, and the quality of the whole vehicle sound insulation can be determined based on the comparison result.

[0049] Exemplarily, it is assumed that the first sound insulation threshold and the second sound insulation threshold are preset sound insulation values ​​of the entire vehicle.

[0050] If the vehicle sound insulation value obtained by the test is greater than the first sound insulation threshold, it can be considered that the vehicle sound insulation is large, that is, the vehicle sound insulation level is high. If the vehicle sound insulation value obtained from the test is greater than or equal to the second sound insulation value threshold and less than or equal to the first sound insulation value threshold, it can be considered that the vehicle sound insulation level is medium. If the vehicle sound insulation value obtained from the test is less than the second sound insulation threshold, it can be considered that the vehicle sound insulation is small, that is, the vehicle sound insulation level is low.

[0051] Taking the first sound insulation threshold value as 230 and the second sound insulation threshold value as 210 as an example, Table 2 exemplarily shows the corresponding relationship between the whole vehicle sound insulation value and the whole vehicle sound insulation degree.

[0052] Table 2

[0053] Referring to Table 2, when the sound insulation value of the whole vehicle is greater than 230, the sound insulation level of the whole vehicle is high; when the sound insulation value of the whole vehicle is greater than or equal to 210 and less than or equal to 230, the sound insulation level of the whole vehicle is medium; when the sound insulation value of the whole vehicle is less than 210, the sound insulation level of the whole vehicle is low.

[0054] Testing based on the critical area sound insulation dimension can be performed using a volumetric sound source in a semi-anechoic chamber.

[0055] Among them, key areas may include but are not limited to the front panel, side panel, floor and wheel arch.

[0056] Exemplarily, the volume sound source may be placed at the inner ear of the driver and the inner ear of the rear right seat.

[0057] Outside the front enclosure, at a height equal to the middle of the front partition, divide it into four equal parts from left to right, and arrange the three microphones at equal distances from left to right.

[0058] Two microphones can be arranged on the left and right sides.

[0059] The microphone may be arranged at a preset distance (eg, 50 mm) from the lower surface of the floor.

[0060] Two microphones can be arranged on the front wheel housing and the rear wheel housing.

[0061] The step of testing based on the sound insulation dimension of the key area may include: obtaining weight coefficients corresponding to multiple frequencies, and the sound insulation of any key area may be determined by the weighted sum of the sound insulation at each frequency.

[0062] Exemplarily, taking the front part as the key area, Table 3 exemplarily shows the weight coefficients of the front part at various frequencies.

[0063] Table 3

[0064]

[0065] Referring to Table 3, the weight coefficient at 400 Hz is 0.045, the weight coefficient at 500 Hz is 0.048, the weight coefficient at 630 Hz is 0.056, the weight coefficient at 800 Hz is 0.069, the weight coefficient at 1000 Hz is 0.077, the weight coefficient at 1250 Hz is 0.091, the weight coefficient at 1600 Hz is 0.123, the weight coefficient at 2000 Hz is 0.117, the weight coefficient at 2500 Hz is 0.101, the weight coefficient at 3150 Hz is 0.096, the weight coefficient at 4000 Hz is 0.083, the weight coefficient at 5000 Hz is 0.067, and the weight coefficient at 6300 Hz is 0.027.

[0066] It can be understood that the above frequencies are merely exemplary and do not constitute a limitation on the embodiments of the present application. The above frequencies can be replaced according to user needs.

[0067] Sound insulation of the front enclosure = F f400 0.045+ F f500 0.048+ F f630 0.056+ F f800 0.069+ F f1000 0.077+ F f1250 0.091+ F f1600 0.123+ F f2000 0.117+ F f2500 0.101+ F f3150 0.096+ F f4000 0.083+ F f5000 0.067+ F f6300 0.027.

[0068] Among them, F f400 is the sound insulation at a frequency of 400 Hz, F f500 is the sound insulation at a frequency of 500 Hz, F f630 is the sound insulation at a frequency of 630Hz, F f800 is the sound insulation at a frequency of 800 Hz, F f1000 is the sound insulation at a frequency of 1000Hz, F f1250 is the sound insulation at a frequency of 1250Hz, F f1600 is the sound insulation at a frequency of 1600 Hz, F f2000 is the sound insulation at a frequency of 2000Hz, F f2500 is the sound insulation at a frequency of 2500Hz, F f3150 is the sound insulation at a frequency of 3150Hz, F f4000 is the sound insulation at a frequency of 4000Hz, F f5000 is the sound insulation at a frequency of 5000Hz, F f6300 It is the sound insulation at a frequency of 6300Hz.

[0069] The calculation method of the sound insulation of other key areas can refer to the calculation method of the sound insulation of the front enclosure mentioned above, which will not be repeated here.

[0070] By increasing the weight of sensitive frequencies, the test is consistent with actual perception and more objective.

[0071] It can be understood that after the sound insulation value of each key area is calculated, the sound insulation value of the entire key area can be determined based on the sound insulation value of each key area.

[0072] The step of determining the sound insulation of the entire key area according to the sound insulation of each key area may include: obtaining a weight coefficient of each key area, and the sound insulation of the entire key area may be determined by the weighted sum of the sound insulation of each key area.

[0073] Exemplarily, Table 4 shows the weight coefficients of each key area.

[0074]

[0075] Referring to Table 4, the weight coefficient of the front enclosure is 0.35, the weight coefficient of the side enclosure is 0.2, the weight coefficient of the floor is 0.3, and the weight coefficient of the wheel arch is 0.15.

[0076] It is understandable that the values ​​of the weight coefficients of the above-mentioned key areas are merely illustrative and do not constitute a limitation on the embodiments of the present application. In some embodiments, the weight coefficients of the above-mentioned key areas may also be other values.

[0077] Sound insulation of the entire key area = F1 0.35+F2 0.2+F3 0.3+F4 0.15.

[0078] Among them, F1 is the sound insulation of the front enclosure, F2 is the sound insulation of the side enclosure, F3 is the sound insulation of the floor, and F4 is the sound insulation of the wheel arch.

[0079] By increasing the weight of sensitive locations, the test is consistent with actual perception and is more objective.

[0080] After the sound insulation value of the key area is obtained through testing, the sound insulation value of the key area can be compared with the preset sound insulation value, and the quality of the sound insulation of the key area can be determined based on the comparison result.

[0081] Exemplarily, it is assumed that the third sound insulation level threshold and the fourth sound insulation level threshold are preset key area sound insulation level values.

[0082] If the critical area sound insulation value obtained by the test is greater than the third sound insulation threshold, it can be considered that the critical area sound insulation is large, that is, the critical area sound insulation level is high. If the critical area sound insulation value obtained from the test is greater than or equal to the fourth sound insulation threshold and less than or equal to the third sound insulation threshold, it can be considered that the critical area sound insulation level is medium. If the sound insulation value of the key area obtained by the test is less than the fourth sound insulation threshold, it can be considered that the sound insulation value of the key area is small, that is, the sound insulation level of the key area is low.

[0083] Taking the third sound insulation value threshold value as 60 and the fourth sound insulation value threshold value as 55 as an example, Table 5 exemplarily shows the corresponding relationship between the sound insulation value value of the key area and the sound insulation degree of the key area.

[0084] Table 5

[0085] Referring to Table 5, when the sound insulation value of the key area is greater than 60, the sound insulation level of the key area is high; when the sound insulation value of the key area is greater than or equal to 55 and less than or equal to 60, the sound insulation level of the key area is medium; when the sound insulation value of the key area is less than 55, the sound insulation level of the key area is low.

[0086] In some optional embodiments, the inner ear sound pressure level (hereinafter referred to as sound pressure level) and speech clarity of the driver in the vehicle can be tested in the following two scenarios.

[0087] Scenario 1: The vehicle travels at a constant speed at the first speed.

[0088] Among them, at the first speed, the influence of road noise is mainly considered. The test site can be an asphalt road surface, and the wind speed can be 3m / s. By testing under scene 1, the sound pressure level and speech clarity can be obtained.

[0089] Exemplarily, the first speed may be 60 km / h.

[0090] After the sound pressure level and speech clarity values ​​are obtained through testing, the sound pressure level and speech clarity values ​​can be compared with the preset sound pressure level threshold and the preset clarity threshold, and the quality of the sound pressure level and speech clarity can be determined based on the comparison results.

[0091] Exemplarily, it is assumed that the first clarity threshold and the second clarity threshold are preset speech clarity values, and the first sound pressure level threshold and the second sound pressure level threshold are preset sound pressure level values.

[0092] If the sound pressure level value obtained by the test is less than the first sound pressure level threshold, and the speech clarity value obtained by the test is greater than the first clarity threshold, it can be considered that the sound pressure level and speech clarity are high; or, If the sound pressure level value obtained by the test is less than or equal to the second sound pressure level threshold and greater than or equal to the first sound pressure level threshold, and the speech clarity value obtained by the test is greater than or equal to the second clarity threshold and less than or equal to the first sound pressure level threshold, it can be considered that the sound pressure level and speech clarity are medium; or, If the sound pressure level value obtained by the test is greater than the second sound pressure level threshold, and the speech clarity value obtained by the test is less than the second clarity threshold, it can be considered that the sound pressure level and speech clarity are low.

[0093] Taking the first sound pressure level threshold as 55, the second sound pressure level threshold as 59, the first clarity threshold as 97, and the second clarity threshold as 94 as an example, Table 6 exemplarily shows the corresponding relationship between the sound pressure level value and the speech clarity value and the sound pressure level and the speech clarity degree.

[0094] Table 6

[0095] Referring to Table 6, when the sound pressure level value is less than 55 and the speech clarity value is greater than 97, the sound pressure level and speech clarity are high; when the sound pressure level value is greater than or equal to 55 and less than or equal to 59, and the speech clarity value is greater than or equal to 94 and less than or equal to 97, the sound pressure level and speech clarity are medium; when the sound pressure level value is greater than 59 and the speech clarity value is less than 94, the sound pressure level and speech clarity are low.

[0096] Scenario 2: The vehicle travels at a constant speed at the second speed.

[0097] Among them, at the second speed, the influence of wind noise is mainly considered. The test site can be an asphalt road surface and the wind speed can be 3m / s. By testing under scene 2, the sound pressure level and speech clarity can be obtained.

[0098] Exemplarily, the second speed may be 120 km / h.

[0099] After the sound pressure level and speech clarity values ​​are obtained through testing, the sound pressure level and speech clarity values ​​can be compared with the preset sound pressure level threshold and the preset clarity threshold, and the quality of the sound pressure level and speech clarity can be determined based on the comparison results.

[0100] Exemplarily, it is assumed that the third clarity threshold and the fourth clarity threshold are preset speech clarity values, and the third sound pressure level threshold and the fourth sound pressure level threshold are preset sound pressure level values.

[0101] If the sound pressure level value obtained by the test is less than the third sound pressure level threshold, and the speech clarity value obtained by the test is greater than the third clarity threshold, it can be considered that the sound pressure level and speech clarity are high; or, If the sound pressure level value obtained by the test is less than or equal to the fourth sound pressure level threshold and greater than or equal to the third sound pressure level threshold, and the speech clarity value obtained by the test is greater than or equal to the fourth clarity threshold and less than or equal to the third sound pressure level threshold, it can be considered that the sound pressure level and speech clarity are medium; or, If the sound pressure level value obtained by the test is greater than the fourth sound pressure level threshold, and the speech clarity value obtained by the test is less than the fourth clarity threshold, it can be considered that the sound pressure level and speech clarity are low.

[0102] Taking the third sound pressure level threshold of 65, the fourth sound pressure level threshold of 69, the third clarity threshold of 86, and the fourth clarity threshold of 72 as examples, Table 7 exemplarily shows the corresponding relationship between the sound pressure level value and the speech clarity value and the sound pressure level and the speech clarity degree.

[0103] Table 7

[0104] Referring to Table 7, when the sound pressure level value is less than 65 and the speech clarity value is greater than 86, the sound pressure level and speech clarity are high; when the sound pressure level value is greater than or equal to 65 and less than or equal to 69, and the speech clarity value is greater than or equal to 72 and less than or equal to 86, the sound pressure level and speech clarity are medium; when the sound pressure level value is greater than 69 and the speech clarity value is less than 72, the sound pressure level and speech clarity are low.

[0105] It is understandable that the above-mentioned scenario 1 and scenario 2 can be used separately, or the above-mentioned scenario 1 and scenario 2 can be used in combination, and the embodiments of the present application do not specifically limit this.

[0106] Step 202 , evaluating the isolation of the vehicle based on the test results.

[0107] Specifically, the test results may include the air tightness of the entire vehicle, the sound insulation of the entire vehicle, the sound insulation of key areas, the sound pressure level and the speech clarity.

[0108] The method of evaluating the isolation feeling of the vehicle based on the test results may include: obtaining weighting coefficients of each dimension, and evaluating the isolation feeling of the vehicle based on the weighted sum of the degrees of each dimension.

[0109] In some optional embodiments, the weighting coefficients of each dimension may be preset.

[0110] In some optional embodiments, the weighted coefficient of each dimension can be obtained based on the user experience frequency and after-sales data analysis, so as to fully and effectively reflect the user's real experience and evaluate the sense of isolation more objectively.

[0111] Table 8 shows the weight coefficients of each dimension by way of example.

[0112] Table 8

[0113] Referring to Table 8, the weighted coefficient of the air tightness of the whole vehicle is 0.15, the weighted coefficient of the sound insulation of the whole vehicle is 0.15, the weighted coefficient of the sound insulation of the key area is 0.2, the weighted coefficient of the sound pressure level and speech clarity at the first speed is 0.3, and the weighted coefficient of the sound pressure level and speech clarity at the second speed is 0.2.

[0114] Taking the weighting coefficients in Table 8 as an example, assuming that the airtightness of the whole vehicle is S1, the sound insulation level of the whole vehicle is S2, the sound insulation level of the key area is D3, the sound pressure level and speech clarity at the first speed are S4, and the sound pressure level and speech clarity at the second speed are S5.

[0115] The degree of isolation of the vehicle is S=S1 0.15+S2 0.15+S3 0.2+S4 0.3+S5 0.2.

[0116] If S is greater than or equal to the first isolation threshold, it can be considered that the isolation of the vehicle is good; or, If S is greater than the second isolation threshold and less than the first isolation threshold, it can be considered that the isolation of the vehicle is medium; or, If S is less than or equal to the second isolation threshold, it can be considered that the isolation of the vehicle is poor.

[0117] The first isolation sense threshold and the second isolation sense threshold are preset isolation sense values.

[0118] Figure 3 This is a schematic diagram of the structure of the isolation evaluation device provided in the embodiment of the present application, such as Figure 3 As shown, the isolation evaluation device 30 may include: a testing module 31 and an evaluation module 32; wherein, Testing module 31, used to test the vehicle based on multiple dimensions such as vehicle air tightness, vehicle sound insulation, key area sound insulation, sound pressure level and speech clarity; The evaluation module 32 is used to evaluate the isolation feeling of the vehicle based on the test result.

[0119] In one possible implementation, the whole vehicle sound insulation is determined by an envelope area of ​​a total sound insulation curve, and the total sound insulation curve is a curve showing how the sound insulation changes with frequency within a preset frequency band.

[0120] In one possible implementation, the key area sound insulation includes at least the front area sound insulation, the side area sound insulation, the floor area sound insulation and the wheel arch area sound insulation.

[0121] In one possible implementation, the key area sound insulation is determined by weighted summing the sound insulation of the front area, the sound insulation of the side area, the sound insulation of the floor area, and the sound insulation of the wheel house area; Among them, any one of the front area, the side area, the floor area and the wheel arch area includes a weight coefficient corresponding to the area.

[0122] In one possible implementation, the sound insulation value of any one of the front area, the side area, the floor area and the wheel arch area is determined by weighted summation of the sound insulation values ​​at each frequency; Wherein, each of the frequencies includes a corresponding weight coefficient.

[0123] In one possible implementation, the sound pressure level and speech clarity are obtained by testing when the vehicle is at a first speed and a second speed; Wherein, the second speed is greater than the first speed.

[0124] In one possible implementation, the test result includes the air tightness of the whole vehicle, the sound insulation of the whole vehicle, the sound insulation of the key area, the sound pressure level and the speech clarity, and the evaluation module 32 is further used to evaluate the isolation of the vehicle based on the result obtained by weighted summation of the air tightness of the whole vehicle, the sound insulation of the whole vehicle, the sound insulation of the key area, the sound pressure level and the speech clarity; Among them, any dimension of the whole vehicle air tightness, the whole vehicle sound insulation, the key area sound insulation, the sound pressure level and the speech clarity includes a weight coefficient corresponding to the dimension.

[0125] In one possible implementation, the weight coefficient corresponding to the dimension is obtained by analyzing user experience frequency and after-sales data.

[0126] In one possible implementation, the evaluation module 32 is further configured to: if the target result is greater than or equal to a first isolation threshold, the isolation of the vehicle is good; or, If the target result is greater than the second isolation threshold and less than the first isolation threshold, the isolation of the vehicle is medium; or, If the target result is less than or equal to the second isolation threshold, the isolation of the vehicle is poor; Among them, the target result is the result obtained by weighted summation of the air tightness of the whole vehicle, the sound insulation level of the whole vehicle, the sound insulation level of the key area, the sound pressure level and the speech clarity level.

[0127] Figure 3 The isolation sense evaluation device 30 provided in the illustrated embodiment can be used to implement the technical solution of the method embodiment shown in the present application. Its implementation principle and technical effects can be further referred to the relevant description in the method embodiment.

[0128] It should be understood that the division of the various modules of the isolation sense assessment device 30 above is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And these modules can all be implemented in the form of software calling through processing elements; they can also be all implemented in the form of hardware; some modules can also be implemented in the form of software calling through processing elements, and some modules can be implemented in the form of hardware. For example, the detection module can be a separately established processing element, or it can be integrated in a chip of the terminal device. The implementation of other modules is similar. In addition, these modules can be fully or partially integrated together, or they can be implemented independently. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or instructions in software form.

[0129] For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASIC), or one or more microprocessors (DSP), or one or more field programmable gate arrays (FPGA). For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0130] Figure 4 The present invention provides a schematic diagram of the structure of a sense of isolation assessment system 400 provided in an embodiment of the present invention. The sense of isolation assessment system 400 may include: at least one processor; and at least one memory in communication with the processor. The memory stores program instructions executable by the processor. The processor in the sense of isolation assessment system 400 calls the program instructions to execute the actions performed in the storage access method provided in an embodiment of the present invention.

[0131] like Figure 4 As shown, the isolation assessment system 400 is in the form of a general purpose computing device. The components of the isolation assessment system 400 may include, but are not limited to: one or more processors 410, a memory 420, a communication bus 440 connecting different system components (including the memory 420 and the processor 410), and a communication interface 430.

[0132] The communication bus 440 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnection (PCI) bus.

[0133] The isolation assessment system 400 typically includes a variety of computer system readable media, which can be any available media that can be accessed by a terminal device, including volatile and non-volatile media, removable and non-removable media.

[0134] The memory 420 may include a computer system readable medium in the form of a volatile memory, such as a random access memory (RAM) and / or a cache memory. The terminal device may further include other removable / non-removable, volatile / non-volatile computer system storage media. Figure 4 Not shown in the figure, a disk drive for reading and writing a removable non-volatile disk (such as a "floppy disk"), and an optical disk drive for reading and writing a removable non-volatile optical disk (such as a compact disc read only memory (hereinafter referred to as: CD-ROM), a digital versatile disc read only memory (hereinafter referred to as: DVD-ROM) or other optical media) may be provided. In these cases, each drive can be connected to the communication bus 440 through one or more data medium interfaces. The memory 420 may include at least one program product, which has a set (for example, at least one) of program modules, which are configured to perform the functions of the various embodiments of the present application.

[0135] A program / utility having a set (at least one) of program modules may be stored in memory 420, such program modules including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules generally perform the functions and / or methods of the embodiments described herein.

[0136] The isolation assessment system 400 may also communicate with one or more external devices (e.g., keyboard, pointing device, display, etc.), one or more devices that enable a user to interact with the terminal device, and / or any device that enables the terminal device to communicate with one or more other computing devices (e.g., network card, modem, etc.). Such communication may be performed via the communication interface 430. In addition, the isolation assessment system 400 may also communicate with the network adapter ( Figure 4 The network adapter may communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via the communication bus 440. It should be understood that although Figure 4 Not shown, other hardware and / or software modules may be used in conjunction with the isolation assessment system 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, disk arrays (Redundant Arrays of Independent Drives; hereinafter referred to as: RAID) systems, tape drives, and data backup storage systems.

[0137] The processor 410 executes various functional applications and data processing by running the programs stored in the memory 420, such as implementing the method provided in the embodiment of the present application.

[0138] It is understandable that the interface connection relationship between the modules illustrated in the embodiment of the present application is only a schematic illustration and does not constitute a structural limitation on the isolation sense evaluation system 400. In other embodiments of the present application, the isolation sense evaluation system 400 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0139] In the above embodiments, the processor involved may include, for example, a CPU, a DSP, a microcontroller or a digital signal processor, and may also include a GPU, an embedded neural network processor (Neural-network Process Units; hereinafter referred to as: NPU) and an image signal processor (Image Signal Processing; hereinafter referred to as: ISP). The processor may also include necessary hardware accelerators or logic processing hardware circuits, such as ASIC, or one or more integrated circuits for controlling the execution of the program of the technical solution of the present application. In addition, the processor may have the function of operating one or more software programs, and the software programs may be stored in a storage medium.

[0140] An embodiment of the present application also provides a readable storage medium, in which a program is stored. When the program is run on a system, the system executes the method provided by the embodiment shown in the present application.

[0141] An embodiment of the present application also provides a program product, which includes a program. When the program product is run on a system, the system executes the method provided by the embodiment shown in the present application.

[0142] In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

[0143] Those of ordinary skill in the art will appreciate that the various units and algorithm steps described in the embodiments disclosed herein can be implemented in a combination of electronic hardware, computer software, and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0144] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0145] In several embodiments provided in the present application, if any function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory; hereinafter referred to as: ROM), random access memory (Random Access Memory; hereinafter referred to as: RAM), disk or optical disk, and other media that can store program codes.

[0146] The above is only a specific implementation of the present application. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. The protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for evaluating a sense of isolation, characterized in that: The method comprises: The vehicle is tested based on multiple dimensions including vehicle air tightness, vehicle sound insulation, key area sound insulation, sound pressure level and speech clarity; The vehicle's sense of isolation was assessed based on the test results.

2. The method according to claim 1, characterized in that The sound insulation of the whole vehicle is determined by the envelope area of ​​the total sound insulation curve, and the total sound insulation curve is a curve showing the change of sound insulation with frequency in a preset frequency band.

3. The method according to claim 1, characterized in that The key area sound insulation includes at least the front area sound insulation, the side area sound insulation, the floor area sound insulation and the wheel arch area sound insulation.

4. The method according to claim 3, characterized in that: The key area sound insulation is determined by weighted summing the front area sound insulation, the side area sound insulation, the floor area sound insulation and the wheel house area sound insulation; Among them, any one of the front area, the side area, the floor area and the wheel arch area includes a weight coefficient corresponding to the area.

5. The method according to claim 4, characterized in that The sound insulation of any one of the front area, the side area, the floor area and the wheel arch area is determined by weighted summing of the sound insulation at each frequency; Wherein, each of the frequencies includes a corresponding weight coefficient.

6. The method according to claim 1, characterized in that The sound pressure level and speech clarity are obtained by testing when the vehicle is at a first speed and a second speed; Wherein, the second speed is greater than the first speed.

7. The method according to any one of claims 1 to 6, characterized in that: The test results include the air tightness of the whole vehicle, the sound insulation of the whole vehicle, the sound insulation of key areas, the sound pressure level and the speech clarity. The evaluation of the isolation of the vehicle based on the test results includes: The isolation of the vehicle is evaluated based on the result obtained by weighted summation of the whole vehicle air tightness, the whole vehicle sound insulation, the key area sound insulation, the sound pressure level and the speech clarity; Among them, any dimension of the whole vehicle air tightness, the whole vehicle sound insulation, the key area sound insulation, the sound pressure level and the speech clarity includes a weight coefficient corresponding to the dimension.

8. The method according to claim 7, characterized in that The weight coefficients corresponding to the dimensions are obtained through analysis of user experience frequency and after-sales data.

9. The method according to claim 7, characterized in that: The evaluation of the isolation of the vehicle based on the result obtained by weighted summation of the whole vehicle air tightness, the whole vehicle sound insulation, the key area sound insulation, the sound pressure level and the speech clarity includes: If the target result is greater than or equal to the first isolation threshold, the isolation of the vehicle is good; or, If the target result is greater than the second isolation threshold and less than the first isolation threshold, the isolation of the vehicle is medium; or, If the target result is less than or equal to the second isolation threshold, the isolation of the vehicle is poor; Among them, the target result is the result obtained by weighted summation of the air tightness of the whole vehicle, the sound insulation level of the whole vehicle, the sound insulation level of the key area, the sound pressure level and the speech clarity level.

10. A device for evaluating a sense of isolation, characterized in that: The device comprises: The test module is used to test the vehicle based on multiple dimensions such as vehicle air tightness, vehicle sound insulation, key area sound insulation, sound pressure level and speech clarity; An evaluation module is used to evaluate the isolation feeling of the vehicle based on the test results.

11. A system for assessing a sense of isolation, characterized in that: include: A processor and a memory, wherein the memory is used to store a program; and the processor is used to run the program to implement the isolation feeling assessment method as described in any one of claims 1 to 9.

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