CN109708745A - Vehicle chassis noise problem source localization method and positioning system - Google Patents
Vehicle chassis noise problem source localization method and positioning system Download PDFInfo
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- CN109708745A CN109708745A CN201711016008.7A CN201711016008A CN109708745A CN 109708745 A CN109708745 A CN 109708745A CN 201711016008 A CN201711016008 A CN 201711016008A CN 109708745 A CN109708745 A CN 109708745A
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- vehicle
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- noise problem
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Abstract
The present invention relates to vehicle chassis noise problem source localization method and positioning systems.The present invention is by being arranged side voice pickup device and side image capturor in vehicle side, a noise figure curve of vehicle side can be measured when the two is relative to vehicle relative motion, wherein side image capturor can be by the noise figure curve measured coupling corresponding with vehicle side various point locations, the sound intensity of vehicle chassis everywhere is measured simultaneously, then the noise figure curve of side and the sound intensity " face " of vehicle chassis are intersected by data processor, the biggish point of one or more noise figure is determined by side noise figure curve, then find out the vehicle chassis of these corresponding points it is horizontally-arranged on the maximum several points of the sound intensity, these points are the position for endangering vehicle side maximum noise problem source determined, this mode structure is simple, it is easy to operate, and advantage of lower cost.
Description
Technical field
The present invention relates to vehicle chassis noise problem source localization method and positioning systems.
Background technique
As the improvement of people's living standards, people are not merely transports to the pursuit of vehicle, more begin to focus on
On the one hand the comfort of vehicle, the comfort of vehicle are embodied in the comfort to passenger, are on the other hand embodied in vehicle periphery
Row Salopian comfort, reduce vehicle the noise hazard of vehicle side pedestrian is particularly important.Therefore automobile is new
During product development, needs fast and accurately to find out the Main Noise Sources to the noise hazard of vehicle side and arrange it one by one
It removes.The main component of existing vehicle is all mounted on chassis substantially, therefore, how to be found out and is affected on chassis to vehicle side
Main noise source position be only the key of problem.
It assists determining the side that the mode of noise source is combined generally by acoustics imaging and optical imagery in the prior art
Method auxiliary finds sound source, and the side of object scoustics image is shot with video-corder as disclosed in the Chinese patent that Authorization Notice No. is CN1764828B
Method and device are by being integrated with the acoustics camera of video camera and microphone array, video camera and microphone array difference
From undetected object body side pickoff signals to determine acoustic picture region and optical imagery region respectively, pass through sound, the weight in light region
It is folded to determine the stronger region of sound source, the acoustics camera of the patent can determine the specific of sound source on object for static object
Position, and by showing which the local sound intensity is bigger, the sound intensity in which place is smaller by the depth of color on the image.
The method and apparatus of the patent are only capable of shooting sound source distribution map to vehicle from vehicle side, can not accurately find out to vehicle side
Specific distributing position of the main noise problem source being affected on vehicle chassis.
Summary of the invention
The purpose of the present invention is to provide one kind, and the master being affected on vehicle chassis to vehicle side can be accurately positioned out
Want the vehicle chassis noise problem source positioning system of the position in noise problem source；The object of the invention is also to provide a kind of vehicles
Chassis noise problem source localization method.
To achieve the above object, vehicle chassis noise problem source positioning system of the invention adopts the following technical scheme that:
Technical solution 1: vehicle chassis noise problem source positioning system includes for detecting on vehicle chassis the vehicle of the sound intensity everywhere
Chassis sound intensity detection device further includes the side voice pickup device and side image capturor being arranged in the side of vehicle, side
Voice pickup device for detecting the vehicle side sound intensity everywhere, further include simultaneously with vehicle chassis sound intensity detection device, side sound
Pick-up and the control connection of side image capturor according to three's data measured to judge on vehicle chassis to vehicle side shadow
Ring the data processor of the position in biggish main noise problem source.
The utility model has the advantages that the present invention is by being arranged side voice pickup device and side image capturor, the two in vehicle side
A noise figure curve of vehicle side can be measured when relative to vehicle relative motion, wherein side image capturor can will measure
The coupling corresponding with vehicle side various point locations of noise figure curve, while measuring the sound intensity of vehicle chassis everywhere, then pass through number
The noise figure curve of side and the sound intensity " face " of vehicle chassis are intersected according to processor, i.e., determined by side noise figure curve
The biggish point of one or more noise figure, then find out the vehicle chassis of these corresponding points it is horizontally-arranged on the sound intensity it is maximum several
A, these points are the position for endangering vehicle side maximum noise problem source determined, this mode structure is simple, grasps
Facilitate, and advantage of lower cost.
Technical solution 2: on the basis of technical solution 1, vehicle chassis sound intensity detection device includes by more than two chassis
The chassis voice pickup device that voice pickup device is arranged along the width direction spacing side by side of vehicle body and is constituted is arranged, chassis voice pickup device
The direction of travel of the vertical vehicle of the arragement direction of row.
The utility model has the advantages that only coming vehicle body by the chassis voice pickup device being made of more than two chassis voice pickup devices
The arrangement of width direction simultaneously cooperates data processor that can measure the sound intensity arrangement of vehicle chassis, in conjunction with being previously entered to data
The position in the noise problem source of you can get it in the case where processor vehicle chassis, substitutes existing acoustics phase using which
Machine, is not only simple in structure and cost is very cheap, practical.
Technical solution 3: on the basis of technical solution 2, vehicle chassis noise problem source positioning system further includes crossbeam, institute
The each chassis voice pickup device for stating chassis voice pickup device row is evenly arranged along the length direction of crossbeam.
The utility model has the advantages that each chassis voice pickup device is fixed on crossbeam, moving beam can be realized chassis sound and pick up
The overall movement for taking device to arrange, so that more places of voice pickup device row are more convenient to use.
Technical solution 4: on the basis of technical solution 3, the crossbeam is extensible canopy.
The utility model has the advantages that length that the flexible adjustable chassis voice pickup device of crossbeam is arranged and each chassis voice pickup device it
Between distance, so that the vehicle body according to different in width adjusts the arrangement situation of each chassis voice pickup device.
Technical solution 5: on the basis of technical solution 4, vehicle chassis noise problem source positioning system further includes mobile small
Vehicle, the crossbeam are mounted in moving trolley.
The utility model has the advantages that crossbeam to be arranged in moving trolley to the movement that can facilitate crossbeam, especially rotated in vehicle original place
When, it can be by pushing moving trolley to realize relative movement of the chassis voice pickup device row relative to vehicle chassis.
Technical solution 6: on the basis of technical solution 1-5 any one, each chassis sound of chassis voice pickup device row
Sound pick-up and/or side voice pickup device are microphone.
Technical solution 7: on the basis of technical solution 1-5 any one, the side image capturor is high-speed camera
Machine.
Vehicle chassis noise problem source localization method of the invention adopts the following technical scheme that:
Technical solution 1: vehicle chassis noise problem source localization method: by vehicle chassis sound intensity detection device to detect vehicle
The sound intensity everywhere on chassis is arranged side voice pickup device and side image capturor in vehicle side, is picked up by side sound
It takes device and side image capturor to detect the vehicle side sound intensity everywhere relative to the relative motion of the length direction of vehicle, passes through
Data processor intercouples the sound intensity everywhere in vehicle the side everywhere sound intensity and vehicle chassis to determine and influence on vehicle side
The position in biggish main noise problem source.
The utility model has the advantages that the present invention is by being arranged side voice pickup device and side image capturor, the two in vehicle side
A noise figure curve of vehicle side can be measured when relative to vehicle relative motion, wherein side image capturor can will measure
The coupling corresponding with vehicle side various point locations of noise figure curve, while measuring the sound intensity of vehicle chassis everywhere, then pass through number
The noise figure curve of side and the sound intensity " face " of vehicle chassis are intersected according to processor, i.e., determined by side noise figure curve
The biggish point of one or more noise figure, then find out the vehicle chassis of these corresponding points it is horizontally-arranged on the sound intensity it is maximum several
A, these points are the position for endangering vehicle side maximum noise problem source determined, this mode structure is simple, grasps
Facilitate, and advantage of lower cost.
Technical solution 2: on the basis of technical solution 1, on vehicle chassis everywhere in the sound intensity detection method it is as follows: will be by
More than two chassis voice pickup devices arrange phase along the chassis voice pickup device that the width direction spacing side by side of vehicle body is arranged and constitutes
For surface vehicle chassis in the relative motion of vehicle lengthwise direction to detect the vehicle chassis sound intensity everywhere, chassis sound picks up
Device row is taken to constitute the vehicle chassis sound intensity detection device.
The utility model has the advantages that only coming vehicle body by the chassis voice pickup device being made of more than two chassis voice pickup devices
The arrangement of width direction simultaneously cooperates data processor that can measure the sound intensity arrangement of vehicle chassis, in conjunction with being previously entered to data
The position in the noise problem source of you can get it in the case where processor vehicle chassis, substitutes existing acoustics phase using which
Machine, is not only simple in structure and cost is very cheap, practical.
Technical solution 3: on the basis of technical solution 2, voice pickup device row in chassis is opposite with the vehicle chassis of surface
The concrete mode of movement: voice pickup device arrangement in chassis is set on the ground, and starting vehicle is arranged along vertical chassis voice pickup device
Length direction advance and vehicle advance when its chassis be in chassis voice pickup device arrange surface.
Technical solution 4: on the basis of technical solution 2, voice pickup device row in chassis is opposite with the vehicle chassis of surface
The concrete mode of movement: by vehicle, original place starts on revolving drum test table, and chassis voice pickup device is arranged along vehicle lengthwise direction
It is moved below chassis.
Technical solution 5: on the basis of technical solution 4, chassis voice pickup device row being mounted in moving trolley,
It is moved synchronously by what moving trolley realization stand and chassis voice pickup device were arranged.
Technical solution 6: on the basis of technical solution 5, chassis voice pickup device is arranged uniform along length of telescopic bar direction
It is arranged on telescopic rod, will pass through the chassis that the telescopic of telescopic rod adapts to different in width.
Technical solution 7: on the basis of technical solution 1-6 any one, identified noise is checked in the following manner
Whether problem source position is correct: by component carry out sound corresponding at the position in the noise problem source on the vehicle chassis having determined
It learns packaging shielding or the component is made no longer to work, then check the change for the noise figure that side voice pickup device at this time detects
It is whether correct with the position in the above-mentioned identified noise problem source of determination to change situation.
Technical solution 8: it on the basis of technical solution 7, is repeatedly detected determined by the position in noise problem source and inspection
Whether noise problem source position is correct until finally determining the position in the main noise problem source being affected to vehicle side.
Detailed description of the invention
Fig. 1 is that the state before 1 pair of embodiment measurement test of vehicle chassis noise problem source positioning system of the invention is shown
It is intended to；
Fig. 2 is the structural schematic diagram of the telescopic rod and corresponding chassis microphone in Fig. 1；
Fig. 3 is the structural schematic diagram of the A-frame and corresponding side microphone, high-speed camera in Fig. 1；
Fig. 4 is the sound intensity curve synoptic diagram of section lower microphone and shows with the corresponding relationship of vehicle image that abscissa is corresponding
Vehicle chassis length, ordinate correspond to sound intensity specific value (sound pressure level)；
Fig. 5 is the grid arrangement image corresponding to vehicle chassis, is made an uproar in figure by the depth (being originally not shown in the figure) display of color
The position in sound problem source；
Fig. 6 is the structural schematic diagram of the embodiment 2 of vehicle chassis noise problem source positioning system of the invention；
Fig. 7 is status diagram of the vehicle on revolving drum test table；
In Fig. 1-4: 1- vehicle, 11- vehicle width, 12- vehicle commander, 2- vehicle chassis noise problem source positioning system, the chassis 21- sound pick up
Device is taken to arrange, 211- telescopic rod, 2111- location hole, 2112- spring holder, the dust-proof plug of 2113-, the installation of 2114- microphone
Hole, the lower part 212- microphone, 22- A-frame, the side 221- microphone, the side 222- high-speed camera, the installation of 223- camera
Slot, 23- data processor, 24- data transmission link；A2-A6 represents the measurement of each microphone of chassis voice pickup device row
As a result；A1 represents the measurement result of side microphone；C-N represents each index point of vehicle lengthwise direction；
In Fig. 5-6: 100- moving trolley, 110- idler wheel, 120- telescopic rod, the lower part 121- microphone, 130- stand, the side 131-
Microphone, the side 132- high-speed camera, 200- vehicle, 300- revolving drum test table.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Present invention seek to address that vehicle chassis noise problem source difficulty be accurately positioned the problem of, one be vehicle chassis noise
The determination in maximum several noise problem sources, the other is influencing maximum noise problem source to vehicle side on vehicle chassis
It determines.Central scope is by measuring vehicle length and width the sound intensity on a plurality of line respectively, and measuring principle is the Mike as point
Wind facies measures moving for vehicle chassis the sound intensity on a line, passes through the sound intensity line and width direction of a plurality of length direction
Sound intensity line superposition and form the grid of the sound intensity, i.e., sound intensity grid is arranged, by vehicle image that high-speed camera absorbs with
And the row of corresponding position of the sound intensity grid on chassis is realized in the coupling (being previously entered the length and width dimensions of vehicle) of data processor
Cloth, so as to directly find out the maximum of the sound intensity at which, the as reality on chassis from grid layout viewing of the sound intensity on chassis
Where the noise problem source of border；The sound intensity for selecting which bar line measured by side microphone is maximum, maximum in this several sound intensitys
The maximum point of the sound intensity is found out on line, these points are the place that maximum noise problem source is influenced on vehicle side.
The embodiment 1 of vehicle chassis noise problem source positioning system of the invention: as shown in Figure 1, vehicle chassis noise is asked
Topic source positioning system 2 include chassis voice pickup device row 21, side voice pickup device, side image capturor and simultaneously with it is above-mentioned
Three controls the data processor 23 of connection.Wherein chassis voice pickup device row 21 includes multiple lower part microphones 212, this implementation
Five are provided in example, respectively label A2-A6.Multiple lower part microphones of chassis voice pickup device row herein are in same direction
Upper interval setting side by side, and its setting is not limited to be arranged on crossbeam or telescopic rod or plate, can also be only arrangement side
Formula, for example, be placed on the ground or other platforms on, can be mutually fixedly connected without structural member, and only be only position
Arrangement.As shown in Fig. 2, each lower part microphone 212 is evenly arranged on respectively on telescopic rod 211, and it is located at the upper table of telescopic rod 211
At face, direction is consistent upward, and telescopic rod 211 is made of the square steel of multistage mutual sheathing, and three-level square steel phase is used in the present embodiment
It is mutually socketed to form, telescopic rod 211 is realized by the mutual cooperation of location hole 2111 and spring holder 2112 between adjacent two-stage
Locking after length adjustment.Each lower part microphone 212 when installing is installed by microphone mounting hole 2114, lower part wheat
The signal wire of gram wind 212 can be laid inside telescopic rod 211, and the both ends of telescopic rod 211 pass through 2113 pairs of dust-proof plug openings
It is blocked, to carry out dust-proof protection.Square steel at different levels when flexible, spacing between each lower part microphone 212 therewith at than
The scaling of example, i.e. spacing between two microphones of arbitrary neighborhood is as consistent as possible, to guarantee the uniformity of measurement.
As shown in figure 3, side voice pickup device, microphone, label A1 are used in the present embodiment；Side image capturor,
The present embodiment uses high-speed camera；That is side microphone 221 and side high-speed camera 222 is separately fixed at A-frame 22
On, wherein the top of A-frame 22 is equipped with camera mounting groove 223, for side high-speed camera 222 to be fixedly mounted；Camera
The lower section of mounting groove 223 is equipped with the mounting hole for installing side microphone 221.
Application method is as follows: the telescopic rod 211 of lower part microphone 212 will be mounted and connected according to 1 chassis width of vehicle
Collapsing length is adjusted, is then placed on ground, side microphone 221 and side high-speed camera then will be mounted and connected
The A-frame 22 of machine 222 is placed on the axis extended line of telescopic rod 211, is guaranteed between A-frame 22 and telescopic rod 211
Distance be greater than wheel width, the present embodiment is according to set by 1 side pedestrian of vehicle and the common distance of vehicle 1, it is therefore an objective to mould
The noise that people is heard is planned to implement, then by data processor 23 and each lower part microphone 212, side microphone 221 and side
The square control of high-speed camera 222 connection, the present embodiment directly adopt signal wire connection, and wireless mode connection can also be used, above-mentioned
After deploying, each microphone and high-speed camera opening, data processor 23 are opened, at the same time in 1 length of vehicle
The uniform sticking sign point in the side of the close side high-speed camera 222 in direction, and label C-N, measure the length and width of vehicle chassis
Size simultaneously will be in the size Input Data Process 23；Then it can start vehicle 1 at the uniform velocity or accelerate through telescopic rod 211,
And by when guarantee two wheels across the two sides at 211 both ends of telescopic rod, and the distance apart from nearest one end is almost the same, vehicle
The axis direction of 1 direction of travel vertical telescopic bar 211 as far as possible, data processor 23 can be according to vehicle chassis length and width ruler
The sound that image information, side microphone 221 and each lower part microphone 212 that very little, side high-speed camera 222 obtains obtain
Information draws and shows that abscissa as shown in Figure 4 corresponds to vehicle chassis length, ordinate corresponds to sound intensity specific value (acoustic pressure
Grade) sound intensity curve graph and the sound intensity curve graph and vehicle 1 and the corresponding position figure of index point thereon, can be direct by the figure
Find out the sound intensity size for corresponding to vehicle C-N each point measured by each lower part microphone 212 of A2-A6, and shows the change of the sound intensity
Change trend；Data processor 23 is drawn also according to information above and is shown as shown in Figure 5 specific corresponding to vehicle chassis simultaneously
The sound intensity grid of position is arranged image, and can be shown at which in image by the depth variation of color or the acoustic ratio at a few places
It is relatively strong, that is, it shows the sound intensity distribution situation of each point on chassis, the strongest area of the sound intensity on chassis can directly be found out by the figure
Domain；While vehicle is relative to lower part microphone movement, the sound intensity curve of vehicle side can be also measured by side microphone
A1 finds out corresponding several sound intensity cross on chassis after intersecting by the biggish point of the sound intensity of A1 with the grid lines that the chassis sound intensity is arranged
Biggish several sound source positions on line, so that it is determined that go out this at possible noise component, then by these components into
Row acoustic barrier is packed or these components is made no longer to work, and then can test again and check that the sound value of side microphone becomes
Change, and then determine whether this few place's component is noise problem source, detects if not then repeating until determining noise problem
Until source, finally determined may make engineer that can easily find out after influencing maximum noise problem source to vehicle side
Noise problem source on chassis；In addition, side Mike divides when in use firstly the need of the numerical value that will test compared with definitely numerical value,
Above-mentioned detection is not needed if being no more than standard figures, if exceeding standard figures at least one, according to above-mentioned steps
Detection.
The embodiment 2 of vehicle chassis noise problem source positioning system of the invention: as shown in Figure 6,7, the present embodiment and reality
Apply example 1 the difference is that, A-frame replaces with stand 130, and stand 130 and the maximum difference of A-frame are without three
A stabilizer blade, further includes moving trolley 100, and the generally strip of moving trolley 100 including horizontal positioned long slab and is mounted on
Each two idler wheels 110 of long board ends, four rolling 110 are all made of universal wheel, one end installation or welding stand of long slab
130, telescopic rod 120 is fixed or installed from one end far from stand 130 on long slab, telescopic rod 120 can stretch on long slab,
Vehicle 200 is opened to revolving drum test table 300 when test, starting 200 rear vehicle 200 of vehicle can rotate in situ, push and move
Dynamic trolley 100 is mobile from 300 lower section of revolving drum test table from headstock to the tailstock or from the tailstock to headstock, and moving direction is along vehicle
200 length direction, and guarantee that the axis of telescopic rod 120 is vertical with moving direction when moving.
In other embodiments: side microphone can also be not provided with, and side high-speed camera is only set, do not influenced at this time
Detection to actual noise problem source on chassis；Each lower part microphone of embodiment 1 can also be not arranged on telescopic rod, but
It is directly anchored on ground or is movably arranged on ground, sliding slot can also be set on the ground, each lower part microphone is sliding
It is dynamic to assemble on the chute, so as to easily adjust the spacing between each lower part microphone and add or subtract wherein
The quantity of few lower part microphone for participating in detection, at this time accordingly can also will be where side microphone and side high-speed camera
Stand or column are slidedly assemblied in the sliding slot, adjust the distance between side microphone and measurement to facilitate；At data
Wireless mode and each microphone can also be used in reason device and high-speed camera control connects；High-speed camera also can be replaced other
The image capturor of moving image capture, such as camera, video recorder may be implemented；Side microphone and lower part microphone can also replace
It is changed to other voice pickup devices, such as microphone, sound transducer etc.；The stretch mode of telescopic rod also can be replaced bellows
Stretch mode etc..
The embodiment of vehicle chassis noise problem source localization method of the invention is in addition to including that above-mentioned vehicle chassis noise is asked
Further include following embodiment other than the application method of each embodiment of topic source positioning system: making vehicle and each microphone, high speed
Video camera moves toward one another simultaneously；Or on a moving belt by vehicle erection, guarantee that vehicle can rotate and can not be relative to transmission
Band is mobile, then fixes each microphone, high-speed camera etc. relative to ground.
Claims (10)
1. vehicle chassis noise problem source positioning system, characterized in that including for detecting on vehicle chassis the vehicle of the sound intensity everywhere
Chassis sound intensity detection device further includes the side voice pickup device and side image capturor being arranged in the side of vehicle, side
Square voice pickup device for detecting the vehicle side sound intensity everywhere, further include simultaneously with vehicle chassis sound intensity detection device, side sound
Sound pick-up and the control connection of side image capturor according to three's data measured to judge on vehicle chassis to vehicle side
The data processor of the position in the main noise problem source being affected.
2. vehicle chassis noise problem according to claim 1 source positioning system, characterized in that the detection of the vehicle chassis sound intensity
Device includes the chassis sound being made of more than two chassis voice pickup devices along the width direction spacing side by side setting of vehicle body
Pick-up row, the direction of travel of the vertical vehicle of arragement direction of chassis voice pickup device row.
3. vehicle chassis noise problem according to claim 2 source positioning system, characterized in that vehicle chassis noise problem
Source positioning system further includes crossbeam, length direction of each chassis voice pickup device that the chassis voice pickup device is arranged along crossbeam
It is evenly arranged.
4. vehicle chassis noise problem according to claim 3 source positioning system, characterized in that the crossbeam is flexible
Beam.
5. vehicle chassis noise problem according to claim 4 source positioning system, characterized in that vehicle chassis noise problem
Source positioning system further includes moving trolley, and the crossbeam is mounted in moving trolley.
6. vehicle chassis noise problem source positioning system described in -5 any one according to claim 1, characterized in that chassis sound
The each chassis voice pickup device and/or side voice pickup device of sound pick-up row is microphone.
7. vehicle chassis noise problem source positioning system described in -5 any one according to claim 1, characterized in that the side
Square image capturor is high-speed camera.
8. vehicle chassis noise problem source localization method, characterized in that by vehicle chassis sound intensity detection device to detect vehicle
The sound intensity everywhere on chassis is arranged side voice pickup device and side image capturor in vehicle side, passes through side sound
Pick-up and side image capturor detect the vehicle side sound intensity everywhere relative to the relative motion of the length direction of vehicle, lead to
It crosses data processor the sound intensity everywhere in vehicle the side everywhere sound intensity and vehicle chassis intercouples to determine to vehicle side shadow
Ring the position in biggish main noise problem source.
9. vehicle chassis noise problem according to claim 8 source localization method, characterized in that everywhere on vehicle chassis
The detection method of the sound intensity is as follows: the width direction spacing side by side by more than two chassis voice pickup devices along vehicle body is arranged and structure
At chassis voice pickup device row relative to surface vehicle chassis in vehicle lengthwise direction relative motion to detect vehicle
The sound intensity, chassis voice pickup device row constitute the vehicle chassis sound intensity detection device everywhere on chassis.
10. vehicle chassis noise problem according to claim 9 source localization method, characterized in that chassis voice pickup device
The concrete mode of row and the vehicle chassis relative motion of surface: voice pickup device arrangement in chassis is set on the ground, vehicle is started
Along vertical chassis voice pickup device row length direction advance and vehicle advance when its chassis be in chassis voice pickup device arrange
Surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711016008.7A CN109708745A (en) | 2017-10-26 | 2017-10-26 | Vehicle chassis noise problem source localization method and positioning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711016008.7A CN109708745A (en) | 2017-10-26 | 2017-10-26 | Vehicle chassis noise problem source localization method and positioning system |
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| CN109708745A true CN109708745A (en) | 2019-05-03 |
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| CN201711016008.7A Pending CN109708745A (en) | 2017-10-26 | 2017-10-26 | Vehicle chassis noise problem source localization method and positioning system |
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| CN103703353A (en) * | 2011-07-28 | 2014-04-02 | 罗伯特·博世有限公司 | Device and method for testing a vehicle |
| CN104062075A (en) * | 2014-07-04 | 2014-09-24 | 奇瑞汽车股份有限公司 | Finished automobile sound transmission loss testing method |
| CN105628186A (en) * | 2015-12-30 | 2016-06-01 | 华晨汽车集团控股有限公司 | Automobile rolling noise test system and noise test method |
| CN206208385U (en) * | 2016-11-29 | 2017-05-31 | 湖北大学 | A kind of device for road rumble detection |
| WO2017135825A1 (en) * | 2016-02-03 | 2017-08-10 | Abax As | Sensor device, system and method for detection of damage to a chassis of a vehicle |
| CN206440464U (en) * | 2016-11-17 | 2017-08-25 | 上汽通用汽车有限公司 | Vehicle noise source separate metering system |
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| CN1764828A (en) * | 2003-01-30 | 2006-04-26 | 应用计算机科学促进协会 | Method and device for imaged representation of acoustic objects, a corresponding information program product and a recording support readable by a corresponding computer |
| CN103703353A (en) * | 2011-07-28 | 2014-04-02 | 罗伯特·博世有限公司 | Device and method for testing a vehicle |
| CN104062075A (en) * | 2014-07-04 | 2014-09-24 | 奇瑞汽车股份有限公司 | Finished automobile sound transmission loss testing method |
| CN105628186A (en) * | 2015-12-30 | 2016-06-01 | 华晨汽车集团控股有限公司 | Automobile rolling noise test system and noise test method |
| WO2017135825A1 (en) * | 2016-02-03 | 2017-08-10 | Abax As | Sensor device, system and method for detection of damage to a chassis of a vehicle |
| CN206440464U (en) * | 2016-11-17 | 2017-08-25 | 上汽通用汽车有限公司 | Vehicle noise source separate metering system |
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Application publication date: 20190503 |