CN107290046B - Indoor test device and test method for noise in vehicle - Google Patents
Indoor test device and test method for noise in vehicle Download PDFInfo
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- CN107290046B CN107290046B CN201710481634.7A CN201710481634A CN107290046B CN 107290046 B CN107290046 B CN 107290046B CN 201710481634 A CN201710481634 A CN 201710481634A CN 107290046 B CN107290046 B CN 107290046B
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- 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
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Abstract
The invention discloses an indoor testing device and a testing method for noise in a vehicle, wherein a closed testing cavity is arranged and a testing tire is connected through a spring support, so that the device provides a way for independently researching the noise in the vehicle caused by road excitation, and avoids the interference of engine vibration, external environment noise and the like on a testing result; after dyeing, the impact force and excitation effect of the road surface on wheels under the automobile driving condition are realized by adopting a means of lifting the test tire to a certain height for releasing, the length and the workload of paving an indoor road surface test piece are reduced, and a transmission mode of noise in the automobile caused by road surface excitation is met by adopting the arrangement of a spring support, a closed test cavity and a collection mode of internal noise; the method determines main factors influencing the noise in the vehicle by researching the relation between the noise in the vehicle and a pavement paving structure, surface texture characteristics and the like; the device has the advantages of low processing cost, small occupied space, no need of paving corresponding pavements, convenient test and good result reproducibility.
Description
Technical Field
The invention belongs to the technical field of pavement functional characteristic testing, and particularly relates to an in-vehicle noise room testing device and a testing method thereof.
Background
Traffic noise generated in the driving process of the vehicle seriously affects the ecological environment along the highway and the production and life of residents. Due to the difference of population distribution, space sealing degree, noise sensitivity requirements and the like along the highway, the influence of noise on audience objects is obviously different. In urban and village and town road sections, the audience of traffic noise is mainly the crowd outside the vehicle, and the source of the traffic noise is tire-road noise; for road sections of which roads pass through tunnels, have extensive and sparse population and the like, the noise audience objects are mainly drivers and passengers in the vehicle, and the noise is caused by vibration of vehicle body wall plates. With the development of the automobile industry, engine vibration noise, noise introduced from the external environment, and the like in the interior noise source are effectively controlled, and the interior noise caused by road excitation becomes an important part affecting riding comfort. The current standard for measuring the noise reference in the automobile is an acoustic automobile noise measurement method (GB/T18697-; however, the test requires pavement of a corresponding type, which not only wastes time and labor and has high cost, but also has difficult control of environmental conditions and the like. In addition, in the method for testing noise indoors, such as the drum method and the tire drop method, the noise obtained is an important component of tire-road noise, i.e., vehicle exterior noise. Based on the consideration of the factors, an in-vehicle noise room testing device based on the road excitation is developed to simulate the in-vehicle noise caused by the vibration transmitted to a vehicle body structure by a road excitation tire through a suspension system, and the problem that no in-vehicle noise room simulation testing device exists at present is solved.
Disclosure of Invention
The invention aims to provide an in-vehicle noise room testing device and a testing method thereof, so as to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an interior indoor testing arrangement of noise of car, includes airtight type test cavity and is used for supporting the support holder of test cavity, and the test cavity lower extreme has the test tire through spring support connection, and test tire below is equipped with fixed road deck board test piece, offers the sound test hole that is used for installing sound sensor on the test cavity, and sound sensor passes through the multichannel distributor and connects in the computer.
Furthermore, an observation window is arranged on the side surface of the test cavity, the height of the test cavity on the support frame is adjustable, and the lower end of the support frame is fixed on the ground; the sound sensor is placed in the cavity through a test hole in the test cavity to collect noise caused by vibration of the wall plate and is connected to the multi-channel distributor by means of a data line.
Furthermore, the sound sensor is fixed through a sensor fixing piece, and the sensor fixing piece is an adjustable supporting frame.
Further, the road deck test piece is fixed on the ground through a fixing clamp.
Further, mounting fixture includes the fixed triangle baffle that sets up of two bilateral symmetry, and the pavement slab test piece is placed between two triangle baffles, fixes through the wedge between pavement slab test piece and the triangle baffle.
A test method for an in-vehicle noise room test device specifically comprises the following steps:
1) firstly, placing a road deck test piece between two triangular baffles, and then fixing the road deck test piece through a wedge block;
2) then placing the sound sensor in the test cavity;
3) and then the test tire is lifted to a certain height through the spring support and then freely falls down, so that the test tire impacts the surface of the road panel test piece, and then the collected sound information is transmitted to a computer through a multi-channel distributor through a sound sensor arranged in the test cavity for data calculation analysis and storage.
Further, specifically, in the step 1), the test tire is ensured to be in surface contact with the central position of the pavement slab test piece.
Further, in the step 2), the sound sensor is fixed through the sensor fixing piece, and then the up-down position of the sound sensor in the test cavity is observed and adjusted through the observation window.
Furthermore, the thickness of the road deck test piece is 40 mm-80 mm.
Further, the lifting height of the tested tyre in the step 3) is 50 mm-100 mm.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the indoor testing device and the testing method for the noise in the vehicle, the sealed testing cavity is arranged and the testing tire is connected through the spring support, so that the device provides a way for independently researching the noise in the vehicle caused by road excitation, and the interference of engine vibration, external environment noise and the like on a testing result is avoided; after dyeing, the impact force and excitation effect of the road surface on wheels under the automobile driving condition are realized by adopting a means of lifting the test tire to a certain height for releasing, the length and the workload of paving an indoor road surface test piece are reduced, and a transmission mode of noise in the automobile caused by road surface excitation is met by adopting the arrangement of a spring support, a closed test cavity and a collection mode of internal noise; according to the invention, the main factors influencing the noise in the vehicle are determined by researching the relation between the noise in the vehicle and the pavement paving structure, the surface texture characteristics and the like, so that a basis is provided for achieving the aim of riding comfort, the achievement can be fed back in time, and the selection and adjustment of the composition materials are convenient; the device has the advantages of low processing cost, small occupied space, no need of paving corresponding pavements, convenient test and good result reproducibility.
Further, mounting fixture includes the fixed triangle baffle that sets up of bilateral symmetry, and the pavement slab test piece is placed between two triangle baffles, fixes the tire that can other decorative pattern shapes of quick replacement through the wedge between pavement slab test piece and the triangle baffle, realizes that different tires are to the influence research of noise in the car, promotes data measurement's efficiency.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Wherein, 1, supporting the bracket; 2. testing the cavity; 3. a sound test hole; 4. testing the tire; 5. a spring support; 6. a pavement slab test piece; 7. a sound sensor; 8. a multi-channel distributor; 9. a computer; 10. a sensor mount; 12. a wedge block; 13. a triangular baffle plate.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, an indoor testing device for noise in a vehicle comprises a sealed testing cavity 2 and a supporting bracket 1 for supporting the testing cavity 2, wherein the lower end of the testing cavity 2 is connected with a testing tire 4 through a spring bracket 5, a fixed road deck test piece 6 is arranged below the testing tire 4, a sound testing hole 3 for installing a sound sensor 7 is formed in the testing cavity 2, and the sound sensor 7 is connected to a computer 9 through a multi-channel distributor 8.
An observation window is arranged on the side surface of the test cavity 2, the height of the test cavity 2 on the support frame 1 is adjustable, and the lower end of the support frame 1 is fixed on the ground; the sound sensor 7 is arranged in the cavity through the sound testing hole 3 on the testing cavity 2 to collect noise caused by vibration of the wall plate and is connected to the multi-channel distributor 8 by a data line; the acoustic sensor 7 is fixed by a sensor fixing member 10, and the up-down position is adjustable.
The sensor fixing member 10 is an adjustable support frame.
Road deck test piece 6 passes through mounting fixture fixed setting subaerial, and mounting fixture includes the fixed triangle baffle 13 that sets up of two bilateral symmetry, and road deck test piece 6 places between two triangle baffles 13, fixes through wedge 12 between road deck test piece 6 and the triangle baffle 13.
Wherein the thickness of the road deck test piece 6 is 40 mm-80 mm; the test tire 4 has a lifting height of 50mm to 100 mm.
A test method for an in-vehicle noise room test device specifically comprises the following steps:
1) firstly, placing a road deck test piece 6 between two triangular baffles 13, and then fixing the road deck test piece through a wedge block 12;
2) then the sound sensor 7 is placed in the test cavity 2;
3) then the test tire 4 is lifted to a certain height through the spring support 5 and then freely falls down, so that the test tire 4 impacts the surface of the road panel test piece 6, vibration signals generated by mutual contact of the test tire and the test tire are fed back to the sound sensor 7 in the test cavity 2, and then collected sound information is transmitted to the computer 9 through the sound sensor 7 arranged in the test cavity 2 to be subjected to data calculation analysis and storage through the multi-channel distributor 8;
4) the road surface board test pieces 6 with different surface characteristics are placed on the device for testing, the test tires 4 are guaranteed to be lifted to the same height for releasing, and noise in the cavities in the vertical vibration process of the test tires 4 is recorded through a computer for follow-up research and evaluation.
Specifically, in step 1), the test tire 4 is ensured to be in surface contact with the center position of the road surface plate test piece 6.
In step 2), the acoustic sensor 7 is fixed by the sensor fixing member 10, and then the up-and-down position of the acoustic sensor 7 in the test cavity 2 is observed and adjusted through the observation window.
Claims (6)
1. The test method for the in-vehicle noise indoor test device is characterized in that the in-vehicle noise indoor test device comprises a closed test cavity (2) and a support bracket (1) used for supporting the test cavity (2), the lower end of the test cavity (2) is connected with a test tire (4) through a spring bracket (5), a fixed road surface board test piece (6) is arranged below the test tire (4), a sound test hole (3) used for mounting a sound sensor (7) is formed in the test cavity (2), the sound sensor (7) is connected to a computer (9) through a multi-channel distributor (8), an observation window is arranged on the side surface of the test cavity (2), the height of the test cavity (2) on the support bracket (1) is adjustable, and the lower end of the support bracket (1) is fixed on the ground; the sound sensor (7) is arranged in the cavity through a sound testing hole (3) in the testing cavity (2) to collect noise caused by vibration of the wallboard and is connected to the multi-channel distributor (8) by means of a data line, the pavement slab test piece (6) is fixed on the ground through a fixing clamp, the fixing clamp comprises two triangular baffles (13) which are symmetrically and fixedly arranged left and right, the pavement slab test piece (6) is arranged between the two triangular baffles (13), and the pavement slab test piece (6) and the triangular baffles (13) are fixed through wedge blocks (12);
the method specifically comprises the following steps:
1) firstly, a road deck test piece (6) is placed between two triangular baffles (13), and then is fixed through a wedge block (12);
2) placing the sound sensor (7) in the test cavity (2);
3) the test tire (4) is lifted to a certain height through the spring support (5) and then freely falls down, so that the test tire (4) impacts the surface of the road panel test piece (6), and then collected sound information is transmitted to the computer (9) through the multi-channel distributor (8) through the sound sensor (7) arranged in the test cavity (2) for data calculation analysis and storage.
2. The testing method for the in-vehicle noise room testing device according to claim 1, wherein the sound sensor (7) is fixed by a sensor fixing member (10), and the sensor fixing member (10) is an adjustable support frame.
3. The testing method for the in-vehicle noise room testing device according to claim 1, wherein in step 1), the surface contact between the test tire (4) and the center position of the road deck test piece (6) is ensured.
4. The testing method for the in-vehicle noise room testing device according to claim 1, wherein in the step 2), the sound sensor (7) is fixed through the sensor fixing member (10), and then the up-and-down position of the sound sensor (7) in the testing cavity (2) is observed and adjusted through the observation window.
5. The test method for the in-vehicle noise room test device according to claim 1, wherein the thickness of the pavement slab test piece (6) is 40mm to 80 mm.
6. The testing method for the in-vehicle noise room testing device according to claim 1, wherein the lifting height of the test tire (4) in the step 3) is 50mm to 100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481634.7A CN107290046B (en) | 2017-06-22 | 2017-06-22 | Indoor test device and test method for noise in vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481634.7A CN107290046B (en) | 2017-06-22 | 2017-06-22 | Indoor test device and test method for noise in vehicle |
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| Publication Number | Publication Date |
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| CN107290046A CN107290046A (en) | 2017-10-24 |
| CN107290046B true CN107290046B (en) | 2019-12-31 |
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| CN201710481634.7A Expired - Fee Related CN107290046B (en) | 2017-06-22 | 2017-06-22 | Indoor test device and test method for noise in vehicle |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109781245B (en) * | 2019-01-15 | 2021-03-23 | 江铃汽车股份有限公司 | Objective evaluation method for pulse noise of diesel engine |
| CN115524402A (en) * | 2021-04-28 | 2022-12-27 | 安徽蓝格利通新材应用股份有限公司 | Testing method of noise testing device for vibration damping material for air conditioner outdoor unit |
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| KR100435639B1 (en) * | 2000-11-20 | 2004-06-12 | 현대자동차주식회사 | Apparatus for measuring sand noise |
| CN201666815U (en) * | 2009-10-23 | 2010-12-08 | 江苏省交通科学研究院股份有限公司 | Integrated test system for automobile noise |
| JP2012145421A (en) * | 2011-01-11 | 2012-08-02 | Bridgestone Corp | Tire noise test method |
| CN104865081A (en) * | 2015-04-15 | 2015-08-26 | 清华大学 | Device and method used for testing cavity noises of tire |
| CN105136271A (en) * | 2015-05-19 | 2015-12-09 | 奇瑞汽车股份有限公司 | Noise measurement method and device, and vibration measurement method and device |
| CN105277275A (en) * | 2015-11-10 | 2016-01-27 | 吉林大学 | Test stand for testing automobile tyre pavement noises |
-
2017
- 2017-06-22 CN CN201710481634.7A patent/CN107290046B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100435639B1 (en) * | 2000-11-20 | 2004-06-12 | 현대자동차주식회사 | Apparatus for measuring sand noise |
| KR20030013895A (en) * | 2001-08-10 | 2003-02-15 | 현대자동차주식회사 | system for measuring driving noise of tire |
| CN201666815U (en) * | 2009-10-23 | 2010-12-08 | 江苏省交通科学研究院股份有限公司 | Integrated test system for automobile noise |
| JP2012145421A (en) * | 2011-01-11 | 2012-08-02 | Bridgestone Corp | Tire noise test method |
| CN104865081A (en) * | 2015-04-15 | 2015-08-26 | 清华大学 | Device and method used for testing cavity noises of tire |
| CN105136271A (en) * | 2015-05-19 | 2015-12-09 | 奇瑞汽车股份有限公司 | Noise measurement method and device, and vibration measurement method and device |
| CN105277275A (en) * | 2015-11-10 | 2016-01-27 | 吉林大学 | Test stand for testing automobile tyre pavement noises |
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