CN109612575A - A kind of objective examination method of automobile wind noise - Google Patents
A kind of objective examination method of automobile wind noise Download PDFInfo
- Publication number
- CN109612575A CN109612575A CN201811506756.8A CN201811506756A CN109612575A CN 109612575 A CN109612575 A CN 109612575A CN 201811506756 A CN201811506756 A CN 201811506756A CN 109612575 A CN109612575 A CN 109612575A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 238000011161 development Methods 0.000 claims abstract description 9
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 4
- 241001269238 Data Species 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 210000000883 ear external Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The invention discloses a kind of objective examination methods of automobile wind noise, structure of the invention is simple, it is cheap, and it is practical, including four microphones inside vehicle seat pillow are arranged in, it wherein include microphone A, microphone B, microphone C and microphone D, pass through the effect of four microphones and other component cooperation, reasonable employment test equipment is in specific position, acquisition characteristic signals are analyzed under specific operating condition, it is evaluated using specific objective parameter, to complete the objective examination of automobile wind noise, guarantee data accurate and effective simultaneously, information is completely controllable, convenient for when data maintenance, automobile is had effectively achieved in the process of development to the objective examination of wind noise, great amount of cost is saved, it is suitble to promote the use of.
Description
Technical field
The present invention relates to a kind of method, in particular to a kind of objective examination method of automobile wind noise.
Background technique
With popularizing for automobile, consumer is higher and higher to the comfort requirement of automobile, and wherein the noise of automobile becomes and disappears
The person of expense buys the embodiment of an important factor in order and an Automobile Enterprises research and development ability for automobile, and wind noise is automobile
A very important performance and consumer compare one of automobile noise of concern in noise, during automotive development such as
What is judged the size of wind noise and is characterized in NVH engineer's problem in need of consideration, during wind noise performance exploitation, only
Wind test of making an uproar is formed a correct test method process and could effectively assess wind and makes an uproar feature, guarantees what wind noise performance was developed
Efficiency, currently, each auto vendor is not identical to the test of wind noise, including point position, operating condition, vehicle needs and road are wanted
It asks, it is extremely important in wind noise performance exploitation for NVH engineer to form a kind of simple and effective wind test method of making an uproar, therefore,
A kind of objective examination method of automobile wind noise will possess good market prospects.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide a kind of objective survey of automobile wind noise
Method for testing, it is easy to use, save a large amount of cost.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
The present invention provides a kind of objective examination method of automobile wind noise, including be arranged in vehicle seat pillow inside four it is transaudient
Device, which is characterized in that include microphone A, microphone B, microphone C and microphone D, pass through four microphones and other component
The effect of cooperation, reasonable employment test equipment acquire characteristic signals under specific position, specific operating condition and are analyzed, and use
Specific objective parameter is evaluated, and to complete the objective examination of automobile wind noise, while guaranteeing data accurate and effective, information is complete
It is whole controllable, convenient for having effectively achieved automobile in the process of development to the objective examination of wind noise to when data maintenance.
As a preferred technical solution of the present invention, empty-car (step 1: is removed into driver, survey crew and survey
Trial assembly is standby must not other load outside) it is parked in specified link, road section should be hard pavement, smoothly must not seam, injustice
Surface texture, it is necessary to dry, the asphalt tar road surface of preferred smooth or cement pavement, and need far from building, wall and big
Type object (distance should be greater than 20 meters)；
Step 2: checkout facility environment and ambient noise record wind speed and direction, along the wind speed of test route 1.2m height
It must not exceed 2m/s, the measurement dynamic range lower limit of determination should be at least below institute by ambient noise and instrument internal electrical noise
Survey sound level 10dB；
Step 3: checking and records vehicle-state, it is desirable that tire is newer, and decorative pattern is without noticeable wear, skylight, the lathe of vehicle
Etc. openings be in close state, automobile keep in circulation, guarantee that the devices such as windscreen wiper, heater, fan and air-conditioning were being tested
It must not work in journey, seat should adjust horizontal and vertical middle position；
Step 4: microphone is arranged in specific position by 4., is connect with data acquisition device, and carries out Initialize installation；
It is required that sensor used in test, instrument and meter have the effective metering quality certification, will sense by calibration and calibration
Device is adopted leading portion with number and is connect, and before sensor is completely fixed, calibration calibration is carried out to sensor, then by sensor (microphone)
It is arranged in the external ear position (side i.e. near the window) of each parking stall, setting sample frequency is 48kHz；
Step 5: using the highest gear of vehicle, by speed be separately fixed at 60km/h, 80km/h, 100km/h,
120km/h, 140km/h carry out 4 repetitions under each speed and effectively test, and each data acquisition time is 10 seconds, it is desirable that
4 repetition tests respectively carry out 2 times in two driving directions, it is therefore an objective to pass through the influence of the average counteracting wind direction of two bearing datas；
Step 6: being handled the data acquired using signal analysis software, and the narrow frequency spectrum line number of FFT is 8192,
Overlap50%, hanning window；Using speech intelligibility at any time Articulation Index vs.time to data into
Row is analyzed and records result.
As a preferred technical solution of the present invention, it is same that the microphone A and microphone B is installed on vehicle body
Longitudinal side.
As a preferred technical solution of the present invention, it is same that the microphone C and microphone D is installed on vehicle body
Longitudinal side.
As a preferred technical solution of the present invention, it is same that the microphone A and microphone C is installed on vehicle body
Horizontal side.
As a preferred technical solution of the present invention, it is same that the microphone B and microphone D is installed on vehicle body
Horizontal side.
The beneficial effects obtained by the present invention are as follows being: structure of the invention is simple, cheap, and practical, can solve
The certainly nonstandard problem of test of automobile wind noise in the process of development is completed the objective examination of automobile wind noise, is guaranteed simultaneously
Data accurate and effective, information is completely controllable, convenient for when data maintenance.Automobile is had effectively achieved in the process of development to wind
The objective examination of noise has saved a large amount of cost, easy to use, there is good economic benefit and social benefit, is suitble to
It promotes the use of.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is subjective structural schematic diagram of the invention；
Fig. 2 is overlooking structure diagram of the invention；
In figure: 1, microphone A；2, microphone B；3, microphone C；4, microphone D.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment: as shown in Figs. 1-2, the present invention provides a kind of objective examination method of automobile wind noise, including setting exists
Four microphones inside vehicle seat pillow, which is characterized in that it include microphone A1, microphone B2, microphone C3 and microphone D4,
By the effect of four microphones and other component cooperation, reasonable employment test equipment is under specific position, specific operating condition
Acquisition characteristic signals are analyzed, and are evaluated using specific objective parameter, to complete the objective examination of automobile wind noise, together
When guarantee data accurate and effective, information is completely controllable, convenient for when data maintenance, has effectively achieved automobile in development process
In to the objective examination of wind noise.
Step 1: empty-car (there must not be other load in addition to driver, survey crew and test equipment) is parked in
Specified link, road section should be hard pavement, smoothly must not seam, uneven surface texture, it is necessary to dry, the drip of preferred smooth
Green asphalt surface or cement pavement, and need far from building, wall and large-sized object (distance should be greater than 20 meters)；
Step 2: checkout facility environment and ambient noise record wind speed and direction, along the wind speed of test route 1.2m height
It must not exceed 2m/s, the measurement dynamic range lower limit of determination should be at least below institute by ambient noise and instrument internal electrical noise
Survey sound level 10dB；
Step 3: checking and records vehicle-state, it is desirable that tire is newer, and decorative pattern is without noticeable wear, skylight, the lathe of vehicle
Etc. openings be in close state, automobile keep in circulation, guarantee that the devices such as windscreen wiper, heater, fan and air-conditioning were being tested
It must not work in journey, seat should adjust horizontal and vertical middle position；
Step 4: microphone is arranged in specific position by 4., is connect with data acquisition device, and carries out Initialize installation；
It is required that sensor used in test, instrument and meter have the effective metering quality certification, will sense by calibration and calibration
Device is adopted leading portion with number and is connect, and before sensor is completely fixed, calibration calibration is carried out to sensor, then by sensor (microphone)
It is arranged in the external ear position (side i.e. near the window) of each parking stall, setting sample frequency is 48kHz；
Step 5: using the highest gear of vehicle, by speed be separately fixed at 60km/h, 80km/h, 100km/h,
120km/h, 140km/h carry out 4 repetitions under each speed and effectively test, and each data acquisition time is 10 seconds, it is desirable that
4 repetition tests respectively carry out 2 times in two driving directions, it is therefore an objective to pass through the influence of the average counteracting wind direction of two bearing datas；
Step 6: being handled the data acquired using signal analysis software, and the narrow frequency spectrum line number of FFT is 8192, overlap
50%, hanning window；Using speech intelligibility, Articulation Index vs.time analyzes simultaneously data at any time
Record result.
The microphone A1 and the microphone B2 are installed on the same longitudinal side of vehicle body, the microphone C3 with it is described transaudient
Device D4 is installed on the same longitudinal side of vehicle body, and the microphone A1 and the microphone C3 are installed on vehicle body with horizontal side, described
Microphone B2 and the microphone D4 are installed on vehicle body with horizontal side.
The present invention can solve the nonstandard problem of test of automobile wind noise in the process of development, complete automobile wind noise
Objective examination, while guaranteeing data accurate and effective, information is completely controllable, convenient for when data maintenance.It has effectively achieved
Automobile is in the process of development to the objective examination of wind noise.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of objective examination method of automobile wind noise, including four microphones inside vehicle seat pillow are arranged in, feature exists
In including microphone A (1), microphone B (2), microphone C (3) and microphone D (4), pass through four microphones and other portions
The effect of part cooperation, reasonable employment test equipment acquire characteristic signals under specific position, specific operating condition and are analyzed, adopted
It is evaluated with specific objective parameter, to complete the objective examination of automobile wind noise, while guaranteeing data accurate and effective, information
It is complete controllable, convenient for having effectively achieved automobile in the process of development to the objective examination of wind noise to when data maintenance.
2. a kind of control method of vehicle whistle car alarm set according to claim 1, which is characterized in that step
One:
Empty-car (there must not be other load in addition to driver, survey crew and test equipment) is parked in specified link, road
Road section should be hard pavement, smoothly must not seam, uneven surface texture, it is necessary to dry, the asphalt tar road surface of preferred smooth
Or cement pavement, and need far from building, wall and large-sized object (distance should be greater than 20 meters)；
Step 2: checkout facility environment and ambient noise record wind speed and direction, and the wind speed along test route 1.2m height must not
More than 2m/s, by ambient noise and instrument internal electrical noise, the measurement dynamic range lower limit of determination should be at least below surveyed sound
Grade 10dB；
Step 3: checking and records vehicle-state, it is desirable that tire is newer, and decorative pattern is opened without noticeable wear, skylight, lathe of vehicle etc.
Mouth is in close state, and automobile keeps interior circulation, guarantees the devices such as windscreen wiper, heater, fan and air-conditioning during the test
It must not work, seat should adjust horizontal and vertical middle position；
Step 4: microphone is arranged in specific position by 4., is connect with data acquisition device, and carries out Initialize installation；It is required that
Used sensor, instrument and meter have the effective metering quality certification by calibration and calibration in test, by sensor with
Number adopts leading portion connection, before sensor is completely fixed, carries out calibration calibration to sensor, then arranges sensor (microphone)
In the external ear position (side i.e. near the window) of each parking stall, setting sample frequency is 48kHz；
Step 5: using the highest gear of vehicle, by speed be separately fixed at 60km/h, 80km/h, 100km/h, 120km/h,
140km/h carries out 4 repetitions under each speed and effectively tests, and each data acquisition time is 10 seconds, it is desirable that 4 repetitions
Test respectively carries out 2 times in two driving directions, it is therefore an objective to pass through the influence of the average counteracting wind direction of two bearing datas；
Step 6: being handled the data acquired using signal analysis software, and the narrow frequency spectrum line number of FFT is 8192, overlap
50%, hanning window；Using speech intelligibility, Articulation Index vs.time analyzes simultaneously data at any time
Record result.
3. a kind of control method of vehicle whistle car alarm set according to claim 1, which is characterized in that the biography
Sound device A (1) and the microphone B (2) are installed on the same longitudinal side of vehicle body.
4. a kind of control method of vehicle whistle car alarm set according to claim 1, which is characterized in that the biography
Sound device C (3) and the microphone D (4) are installed on the same longitudinal side of vehicle body.
5. a kind of control method of vehicle whistle car alarm set according to claim 1, which is characterized in that the biography
Sound device A (1) and the microphone C (3) are installed on vehicle body with horizontal side.
6. a kind of control method of vehicle whistle car alarm set according to claim 1, which is characterized in that the biography
Sound device B (2) and the microphone D (4) are installed on vehicle body with horizontal side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506756.8A CN109612575A (en) | 2018-12-10 | 2018-12-10 | A kind of objective examination method of automobile wind noise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506756.8A CN109612575A (en) | 2018-12-10 | 2018-12-10 | A kind of objective examination method of automobile wind noise |
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| CN109612575A true CN109612575A (en) | 2019-04-12 |
Family
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| CN201811506756.8A Pending CN109612575A (en) | 2018-12-10 | 2018-12-10 | A kind of objective examination method of automobile wind noise |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631842A (en) * | 2019-10-15 | 2019-12-31 | 重庆长安汽车股份有限公司 | Method for testing surface noise source intensity of automobile side window |
| CN111750977A (en) * | 2020-06-22 | 2020-10-09 | 重庆长安汽车股份有限公司 | Noise testing device and method for automobile air pipe and air port |
| CN112097891A (en) * | 2020-09-15 | 2020-12-18 | 广州汽车集团股份有限公司 | Wind vibration noise evaluation method and system and vehicle |
| CN113624335A (en) * | 2021-10-09 | 2021-11-09 | 江铃汽车股份有限公司 | Method for testing and evaluating exhaust airflow sound in vehicle rapid acceleration process |
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| JP2006125997A (en) * | 2004-10-28 | 2006-05-18 | Fuji Heavy Ind Ltd | Noise measuring system |
| US7263879B1 (en) * | 2006-05-04 | 2007-09-04 | Daimlerchrysler Corporation | Method for wind-noise testing of an automobile |
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| JP2006125997A (en) * | 2004-10-28 | 2006-05-18 | Fuji Heavy Ind Ltd | Noise measuring system |
| US7263879B1 (en) * | 2006-05-04 | 2007-09-04 | Daimlerchrysler Corporation | Method for wind-noise testing of an automobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631842A (en) * | 2019-10-15 | 2019-12-31 | 重庆长安汽车股份有限公司 | Method for testing surface noise source intensity of automobile side window |
| CN111750977A (en) * | 2020-06-22 | 2020-10-09 | 重庆长安汽车股份有限公司 | Noise testing device and method for automobile air pipe and air port |
| CN112097891A (en) * | 2020-09-15 | 2020-12-18 | 广州汽车集团股份有限公司 | Wind vibration noise evaluation method and system and vehicle |
| CN113624335A (en) * | 2021-10-09 | 2021-11-09 | 江铃汽车股份有限公司 | Method for testing and evaluating exhaust airflow sound in vehicle rapid acceleration process |
| CN113624335B (en) * | 2021-10-09 | 2022-01-25 | 江铃汽车股份有限公司 | Method for testing and evaluating exhaust airflow sound in vehicle rapid acceleration process |
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