CN110411557A - A kind of microphone array frame body measuring electric automobile motor system noise - Google Patents
A kind of microphone array frame body measuring electric automobile motor system noise Download PDFInfo
- Publication number
- CN110411557A CN110411557A CN201910663942.0A CN201910663942A CN110411557A CN 110411557 A CN110411557 A CN 110411557A CN 201910663942 A CN201910663942 A CN 201910663942A CN 110411557 A CN110411557 A CN 110411557A
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- China
- Prior art keywords
- frame body
- microphone
- cross
- tube
- electric automobile
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Classifications
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/026—Supports for loudspeaker casings
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (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 microphone array frame bodies for measuring electric automobile motor system noise, are provided with main frame body, and main frame body is equipped with rotatable cross, and the adjustable microphone in position is equipped in each branch arm of cross.The configuration of the present invention is simple, it is easy to operate, the geometry of microphone array frame body can be adjusted as needed, select the array element spacing and element number of array of microphone speaker, position that microphone transform can be made different, angle, azimuth-range, with can comprehensive measurement electric automobile motor system noise, the characteristics of further obtaining accurate measurement data.
Description
Technical field
The present invention relates to electric machines test technical field, especially a kind of microphone for measuring electric automobile motor system noise
Array frame body.
Background technique
Electric car increases sharply as new clean energy resource vehicle, ownership, and driving motor technology is also quickly sent out
Exhibition.But the noise of driving motor for electric automobile has to comply with design objective, is different from common industrial motor system.Motor is made an uproar
Sound is mainly derived from following three kinds of factors: electromagnetic noise caused by electromagnetic force wave；Ventilation noise caused by air force；It is mechanical
Mechanical noise caused by moving.
In order to which noise of motor is effectively reduced, it is necessary to the main portions of its sounding and the sound source of sounding are accurately found out first,
And determine that the sound source to play a decisive role generallys use to take measures and substantially distinguishes all kinds of noise sources by point position
Method.The purpose of noise of motor test is primarily to whether verifying noise of motor and vibration reach design requirement；Analysis generates
The reason of noise and vibration；The effect of method and measure that verifying inhibits noise of motor and vibration to be taken.
The generation of sound is the vibration by object, and the fluctuation and sympathetic response of air in space is caused to pronounce, then is passed by atmosphere
It broadcasts, a kind of physical phenomenon that the auditory nerve made one is experienced.Sound wave is air with density wavy manner transmitting energy.However sound
Sound is the medium by atmosphere as transmitting, has its relative velocity naturally, its transmission speed is per second usually at 0 DEG C
331m, and the variation of temperature also will affect the increase and decrease of its transmission speed, its speed can generate at as every 1 DEG C of variation
The variation of 0.61m.Such as its speed of sound is 340.15m per second at 15 DEG C of room temperature, at 38 DEG C of room temperature, its speed of sound is
354.18m per second, therefore be different in the sound that different periods are experienced in the same space.Noise testing needs to pass
Sound device (microphone) carries out in the space of special anechoic room or spaciousness, and driving motor for electric automobile needs dynamic in electric vehicle
It is carried out on power-driven system testboard bay.
In the prior art, electrical vehicular power drive system testboard bay due to volume greatly and the factors such as difficult to install, make
It must be difficult to be built in anechoic room, even if establishing rack in anechoic room, rack can be reduced with how dynamometer machine is connected
Or avoid noise leakage that from also becoming a great problem, and influence when bench run to driving motor noise is also difficult to eliminate,
Establish that anechoic room cost is relatively high, and cost is somewhat expensive simultaneously.
In order to reduce the influence of ambient noise, generally selects microphone array and carry out noise testing, microphone array is main
It is made of microphone array element and microphone array frame body, the geometry including selecting microphone array element type and microphone array frame body
The factors such as structure, the spacing for determining microphone array element and element number of array.But the microphone array cost of business is relatively high, and
Microphone spacing is fixed in array, and the frequency range for measuring noise is also affected
In traditional microphone array frame body form, the geometry of array be mostly uniform straight line array, Homogeneous Circular face battle array, this
The microphone array frame body of kind structure cannot change position and the angle of microphone, cannot obtain comprehensive and accurate noise testing number
According to.So how in common lab noise testing efficiently and effectively to be carried out to driving motor for electric automobile system, it is mating complete
The microphone array frame body of azimuthal measurement noise sound wave just seems increasingly important.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of microphone array for measuring electric automobile motor system noise
Column frame body can carry out noise testing to driving motor for electric automobile system in common lab, and microphone can be adjusted by having
The geometry of array frame body selects the array element spacing and element number of array of microphone speaker, comprehensive measurement electricity as needed
The characteristics of electrical automobile electric system noise.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of measurement electric automobile motor system
The microphone array frame body of noise, including main frame body, cross and microphone；The main frame body is equipped with rotatable cross,
The adjustable microphone in position is equipped in each branch arm of the cross.
A kind of microphone array frame body of above-mentioned measurement electric automobile motor system noise, is arranged on the cross
Left transverse tube, upper riser, right transverse tube and lower standing tube；The left part of the right end and cross left arm of the left transverse tube is hinged, it is described on
The lower end of standpipe and the upper end of cross upper arm are hinged, and the left end of the right transverse tube and the right part of cross right arm are hinged,
The upper end of the lower standing tube and the lower end of cross lower arm are hinged；The microphone has multiple and is evenly arranged on cross, Zuo Heng
On pipe, upper riser, right transverse tube and lower standing tube.
A kind of microphone array frame body of above-mentioned measurement electric automobile motor system noise, the cross, left transverse tube,
Upper riser, right transverse tube and lower standing tube are all made of the pipe that section is rectangle, and the microphone is equipped with attachment base and anchor ear retainer ring, institute
It states anchor ear retainer ring and is sleeved on the outer tube that section is rectangle, the attachment base of the microphone passes through the company of bolt and anchor ear retainer ring
Connect opening connection.
A kind of microphone array frame body of above-mentioned measurement electric automobile motor system noise, the main frame body includes pedestal
And vertical tube, the pedestal are rest on the ground, the vertical tube lower end is fixedly connected with pedestal, the vertical tube upper end and cross
Center is hinged.
A kind of microphone array frame body of above-mentioned measurement electric automobile motor system noise, the center of the cross is set
There is ring flange；The vertical tube upper end and the center of ring flange are hinged.
A kind of microphone array frame body of above-mentioned measurement electric automobile motor system noise, the left side of the left transverse tube
The distance between right side to right transverse tube is A=1.2m-1.6m, in the left side of left transverse tube between the right side of right transverse tube
It is uniformly arranged 15 microphones；The distance between the upper surface of the upper riser to lower end surface of lower standing tube is B=1m-1.4m, In
The upper surface of upper riser is to being uniformly arranged 12 microphones between the lower end surface of lower standing tube.
A kind of microphone array frame body measuring electric automobile motor system noise provided by the invention, is provided with body frame
Body, cross and microphone；The main frame body is equipped with rotatable cross, and position is equipped in each branch arm of the cross
Set adjustable microphone.Its advantageous effects is: structure is simple, easy to operate, and microphone transform can be made different
Position, angle, azimuth-range, can comprehensive measurement electric automobile motor system noise, further obtain accurately survey
Measure data.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the structural schematic diagram of main frame body folded deformation of the invention；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the attachment structure schematic diagram of microphone with the pipe that section is rectangle；
Fig. 7 is the top view of Fig. 6；
Fig. 8 is microphone distributed architecture schematic diagram in the present invention.
Each part numbers in figure are as follows: cross 1, left transverse tube 2, microphone 3, upper riser 4, right transverse tube 5, lower standing tube 6, vertical tube
7, pedestal 8, ring flange 9, attachment base 10, bolt 11, the left side that section is the pipe 12 of rectangle, anchor ear retainer ring 13, left transverse tube
The distance between right side to right transverse tube is A, the distance between the upper surface of upper riser to the lower end surface of lower standing tube is B.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Fig. 1~8, a kind of microphone array frame measuring electric automobile motor system noise provided by the invention
Body by microphone array frame body geometric center against the center of tested sound source, receives acoustic receiver unit during installation
And show the noise signal of microphone.By adjusting microphone array frame body can there are many deformations: one, left transverse tube can be rotated
2, upper riser 4, right transverse tube 5, lower standing tube 6, change hinge angle, and then change the plane figure or three-dimensional shape of bracket, when complete
It is exactly criss-cross when full opening；It can also become three-dimensional frustum shape, form different microphone array frame bodies；Two, it unclamps
The nut of bolt 11, thus it is possible to vary the angle of microphone 3 pushes anchor ear retainer ring 13 mobile for the pipe 12 of rectangle along section,
It can change the position of microphone 3；Anchor ear retainer ring 13 and section are that the pipe 12 of rectangle cooperates, and guarantee mounted microphone 3
It does not shift.Three, move vertical tube 7 and pedestal 8, thus it is possible to vary microphone 3 is at a distance from tested motor.Above-mentioned three kinds of methods of adjustment make
Microphone receives noise sound wave in different positions, azimuth-range, ensure that during the test, adjusts microphone array one by one
The shape of column frame body is compared various test datas, obtains more comprehensive test result.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out change and modification appropriate.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.In addition, although this specification
In use some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (6)
1. a kind of microphone array frame body for measuring electric automobile motor system noise, it is characterised in that: including main frame body, cross
Frame (1) and microphone (3)；The main frame body is equipped with rotatable cross (1), in each branch arm of the cross (1)
Equipped with the adjustable microphone in position (3).
2. a kind of microphone array frame body for measuring electric automobile motor system noise according to claim 1, feature
It is: left transverse tube (2), upper riser (4), right transverse tube (5) and lower standing tube (6) is set on the cross (1)；The left transverse tube
(2) left part of right end and cross (1) left arm is hinged, the lower end of the upper riser (4) and the upper end of cross (1) upper arm
Portion is hinged, and the left end of the right transverse tube (5) and the right part of cross (1) right arm are hinged, the upper end and ten of the lower standing tube (6)
The lower end of cabinet frame (1) lower arm is hinged；The microphone (3) has multiple and is evenly arranged on cross (1), left transverse tube (2), upper riser
(4), on right transverse tube (5) and lower standing tube (6).
3. a kind of microphone array frame body for measuring electric automobile motor system noise according to claim 2, feature
Be: it is rectangle that the cross (1), left transverse tube (2), upper riser (4), right transverse tube (5) and lower standing tube (6), which are all made of section,
Pipe (12), the microphone (3) are equipped with attachment base (10) and anchor ear retainer ring (13), and the anchor ear retainer ring (13) is sleeved on section
Outside the pipe (12) of rectangle, the attachment base (10) of the microphone (3) passes through the company of bolt (11) and anchor ear retainer ring (13)
Connect opening connection.
4. a kind of microphone array frame body for measuring electric automobile motor system noise according to claim 3, feature
Be: the main frame body includes pedestal (8) and vertical tube (7), and the pedestal (8) rest on the ground, vertical tube (7) lower end and bottom
Seat (8) is fixedly connected, and vertical tube (7) upper end and the center of cross (1) are hinged.
5. a kind of microphone array frame body for measuring electric automobile motor system noise according to claim 4, feature
Be: the center of the cross (1) is equipped with ring flange (9)；Vertical tube (7) upper end and the center of ring flange (9) are hinged.
6. a kind of microphone array frame body for measuring electric automobile motor system noise according to claim 5, feature
Be: the distance between left side to right side of right transverse tube (5) of the left transverse tube (2) is A=1.2m-1.6m, in left transverse tube
(2) left side is to being uniformly arranged 15 microphones (3) between the right side of right transverse tube (5)；The upper surface of the upper riser (4)
The distance between lower end surface to lower standing tube (6) is B=1m-1.4m, in the lower end of the upper surface of upper riser (4) to lower standing tube (6)
12 microphones (3) are uniformly arranged between face.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110347517.8A CN113074809B (en) | 2019-07-23 | 2019-07-23 | Microphone array frame for measuring noise of electric vehicle motor system |
| CN201910663942.0A CN110411557A (en) | 2019-07-23 | 2019-07-23 | A kind of microphone array frame body measuring electric automobile motor system noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910663942.0A CN110411557A (en) | 2019-07-23 | 2019-07-23 | A kind of microphone array frame body measuring electric automobile motor system noise |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110347517.8A Division CN113074809B (en) | 2019-07-23 | 2019-07-23 | Microphone array frame for measuring noise of electric vehicle motor system |
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| CN110411557A true CN110411557A (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110347517.8A Active CN113074809B (en) | 2019-07-23 | 2019-07-23 | Microphone array frame for measuring noise of electric vehicle motor system |
| CN201910663942.0A Pending CN110411557A (en) | 2019-07-23 | 2019-07-23 | A kind of microphone array frame body measuring electric automobile motor system noise |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110347517.8A Active CN113074809B (en) | 2019-07-23 | 2019-07-23 | Microphone array frame for measuring noise of electric vehicle motor system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750976A (en) * | 2020-05-18 | 2020-10-09 | 重庆长安汽车股份有限公司 | Point sound source volume acceleration calibration device and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113589229B (en) * | 2021-09-29 | 2022-01-21 | 山东世纪矿山机电有限公司 | Target positioning device for multi-array noise positioning and using method |
| CN114427964A (en) * | 2022-01-26 | 2022-05-03 | 中国科学院力学研究所 | Noise detection device and detection method for aircraft tire |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6386377B1 (en) * | 2000-09-25 | 2002-05-14 | Lenny Yeoman | Mounting assembly for plurality of microphones |
| CN204420492U (en) * | 2015-01-15 | 2015-06-24 | 襄阳达安汽车检测中心 | A kind of mounting bracket for automobile noise identifing source microphone array |
| CN105276341A (en) * | 2015-11-20 | 2016-01-27 | 湖南大学 | Automobile multifunctional microphone installation support |
| CN106792300A (en) * | 2017-01-05 | 2017-05-31 | 青岛理工大学 | Adjustable microphone array arrangement apparatus |
| CN207978091U (en) * | 2018-03-27 | 2018-10-16 | 中国铁路设计集团有限公司 | A kind of adjustable microphone array holder in position |
| CN108933987A (en) * | 2018-06-28 | 2018-12-04 | 上海工程技术大学 | A kind of deformable microphone array bracket |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3918730B2 (en) * | 2002-12-20 | 2007-05-23 | 富士ゼロックス株式会社 | Microphone array and sound pressure distribution analysis system |
| CN104053088A (en) * | 2013-03-11 | 2014-09-17 | 联想(北京)有限公司 | Microphone array adjustment method, microphone array and electronic device |
| CN203761550U (en) * | 2013-08-20 | 2014-08-06 | 宁波市鄞州奥创电子有限公司 | Novel small drum microphone |
| CN105828259B (en) * | 2016-03-10 | 2019-01-08 | 浙江工业大学 | A kind of umbrella shape can recombinate three-dimensional microphone array |
| DE102017208256B4 (en) * | 2017-05-16 | 2022-09-15 | MÜLLER-BBM Acoustic Solutions GmbH | Method for optimizing the position of microphones in a microphone array |
| CN107271139B (en) * | 2017-08-14 | 2023-07-28 | 中国航空工业集团公司哈尔滨空气动力研究所 | Combined microphone array device |
| CN109374121B (en) * | 2018-11-23 | 2020-08-18 | 温州市特种设备检测研究院 | Microphone sensor array clamp for noise monitoring |
| CN109974846B (en) * | 2019-03-20 | 2019-12-10 | 上海交通大学 | array-variable rotary acoustic measuring device |
-
2019
- 2019-07-23 CN CN202110347517.8A patent/CN113074809B/en active Active
- 2019-07-23 CN CN201910663942.0A patent/CN110411557A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6386377B1 (en) * | 2000-09-25 | 2002-05-14 | Lenny Yeoman | Mounting assembly for plurality of microphones |
| CN204420492U (en) * | 2015-01-15 | 2015-06-24 | 襄阳达安汽车检测中心 | A kind of mounting bracket for automobile noise identifing source microphone array |
| CN105276341A (en) * | 2015-11-20 | 2016-01-27 | 湖南大学 | Automobile multifunctional microphone installation support |
| CN106792300A (en) * | 2017-01-05 | 2017-05-31 | 青岛理工大学 | Adjustable microphone array arrangement apparatus |
| CN207978091U (en) * | 2018-03-27 | 2018-10-16 | 中国铁路设计集团有限公司 | A kind of adjustable microphone array holder in position |
| CN108933987A (en) * | 2018-06-28 | 2018-12-04 | 上海工程技术大学 | A kind of deformable microphone array bracket |
Non-Patent Citations (1)
| Title |
|---|
| 彭连云: "基于声阵列混合动力电动客车电机系统噪声测试研究", 《微电机》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750976A (en) * | 2020-05-18 | 2020-10-09 | 重庆长安汽车股份有限公司 | Point sound source volume acceleration calibration device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113074809B (en) | 2023-01-24 |
| CN113074809A (en) | 2021-07-06 |
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Application publication date: 20191105 |