CN112013950A - Microphone position device and method for testing noise in automobile - Google Patents
Microphone position device and method for testing noise in automobile Download PDFInfo
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- CN112013950A CN112013950A CN202010897087.2A CN202010897087A CN112013950A CN 112013950 A CN112013950 A CN 112013950A CN 202010897087 A CN202010897087 A CN 202010897087A CN 112013950 A CN112013950 A CN 112013950A
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- rod
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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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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a microphone position device and a method for testing noise in an automobile, wherein the microphone position device comprises a level meter, a height control rod, a transverse position control rod, a fixed rod and a microphone, the bottom of the height control rod is rotatably connected with the fixed rod through a hinge, the top of the height control rod is connected with the transverse position control rod, the level meter is arranged on the height control rod, the microphone is arranged on the transverse position control rod, the fixed rod is inserted into a gap between a seat cushion and a backrest, the height control rod is ensured to be positioned at the intersection line of the seat cushion and the backrest, the level meter is adjusted to ensure that bubbles of the level meter are positioned in the middle, the height control rod is ensured to be vertical, and the position corresponding to the transverse position control rod is a microphone measuring point, the microphone position device has the beneficial effects that: the method is simple to operate, convenient and fast, the microphone measuring point can be determined in four steps, and meanwhile, the precision is high.
Description
Technical Field
The invention relates to the technical field of automobile noise test, in particular to a microphone position device and a microphone position method for automobile interior noise test.
Background
In the field of GB/T18697 automotive in-vehicle noise testing, it is necessary to test passenger ear-side noise values in order to check whether the noise of the vehicle is within specified limits and whether significant variations have occurred since the submission of the vehicle or between vehicles submitted in different batches. However, the following problems exist in the specific test:
(1) the vertical coordinate of the microphone is (70 + -5) cm above the intersection of the surface of the seat and the backrest. When the height of the chair is measured by a measuring tape for 70cm, the national standard requires that the height is difficult to be accurate right above the intersecting line of the chair and the backrest;
(2) the horizontal abscissa of the microphone is the right (20 +/-2) cm of the center plane of the seat, and the microphone needs to be remeasured to meet the requirements for headrests with different widths, which is time-consuming and labor-consuming.
Disclosure of Invention
Aiming at the defects, the invention provides the microphone position device and the microphone position method for the noise test in the automobile, which have the advantages of simple operation, convenience and rapidness, high precision and capability of determining the microphone measuring point in four steps.
The invention is realized by the following technical scheme: a microphone position device and a microphone position method for testing noise in an automobile comprise a level meter, a height control rod, a transverse position control rod, a fixed rod and a microphone, wherein the bottom of the height control rod is rotatably connected with the fixed rod through a hinge, the top of the height control rod is connected with the transverse position control rod, the level meter is arranged on the height control rod, and the microphone is arranged on the transverse position control rod.
As a preferable technical solution of the present invention, the height control rod includes a first height rod, a connecting rod, and a second height rod, a bottom end of the first height rod is fixedly connected to a top end of the connecting rod, a top end of the second height rod is fixedly connected to a bottom end of the connecting rod, the first height rod and the second height rod are parallel to each other, and a horizontal distance between the first height rod and the second height rod is 8 cm.
As a preferable technical scheme of the invention, the end part of the transverse position control rod is provided with an iron rod, and the horizontal length of the iron rod is 8 cm.
As a preferable technical scheme of the invention, the top of the height control rod is fixedly welded at the horizontal length midpoint of the transverse position control rod.
As a preferred technical scheme of the invention, the microphone position device and the method for testing the noise in the automobile comprise the following steps:
(1) inserting a fixed rod into a gap between a seat cushion and a backrest to ensure that a height control rod is positioned at the intersection line of the seat cushion and the backrest;
(2) moving the height control rod in the Y direction of the vehicle to enable the height control rod to be consistent with the coordinate of the seat center line in the Y direction of the vehicle;
(3) adjusting the level gauge to enable the bubble of the level gauge to be positioned in the middle and ensure that the height control rod is vertical;
(4) the position corresponding to the transverse position control rod is the microphone measuring point.
Compared with the prior art, the invention has the beneficial effects that:
(1) the method is convenient and quick, and the measuring point of the microphone can be determined in four steps;
(2) the precision is high, the height of the height control rod and the position of the transverse position control rod are fixed, and the accuracy of the height, the accuracy of the horizontal distance and the accuracy of the vertical angle are ensured;
(3) the repeatability is high, and the device can ensure that the microphone positions are consistent each time, and the error is small.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the structure of the present invention;
fig. 3 is an installation drawing of the present invention in use.
List of reference numerals: 1. a level gauge; 2. a height control lever; 3. a lateral position control rod; 4. fixing the rod; 5. a microphone; 6. a first height bar; 7. a connecting rod; 8. a second height bar; 9. an iron rod; 10. a backrest; 11. a seat cushion.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 and 2, a microphone position device and method for testing noise in an automobile includes a level 1, a height control rod 2, a horizontal position control rod 3, a fixing rod 4 and a microphone 5, wherein the bottom of the height control rod 2 is rotatably connected with the fixing rod 4 through a hinge, the top of the height control rod 2 is connected with the horizontal position control rod 3, the level 1 is arranged on the height control rod 2, and the microphone 5 is arranged on the horizontal position control rod 3.
As an embodiment of the present invention, the height control rod 2 includes a first height rod 6, a connecting rod 7 and a second height rod 8, a bottom end of the first height rod 6 is fixedly connected to a top end of the connecting rod 7, a top end of the second height rod 8 is fixedly connected to a bottom end of the connecting rod 7, the first height rod 6 and the second height rod 8 are parallel to each other, a horizontal distance between the first height rod 6 and the second height rod 8 is 8cm, and a vertical distance from the top end of the first height rod to the bottom end of the second height rod is 70 cm.
As an embodiment of the invention, the end of the transverse position control rod 3 is provided with an iron rod 9, and the horizontal length of the iron rod 9 is 8 cm.
As an embodiment of the invention, the top of the height control rod 2 is fixedly welded to the horizontal length midpoint of the transverse position control rod 3.
As an embodiment of the present invention, as shown in fig. 3, a microphone position apparatus and method for noise test in an automobile includes the following steps:
(1) inserting the fixing rod 4 into a gap between the seat cushion 11 and the backrest 10 to ensure that the height control rod 2 is positioned at the intersection line of the seat cushion 11 and the backrest 10;
(2) moving the height control rod 2 in the Y direction of the vehicle to enable the height control rod 2 to be consistent with the coordinate of the seat center line in the Y direction of the vehicle;
(3) adjusting the level meter 1 to enable the bubble of the level meter 1 to be positioned in the middle and ensure that the height control rod 2 is vertical;
(4) the position corresponding to the transverse position control rod 3 is the microphone measuring point.
The technical scheme provided by the invention has the beneficial effects that: the device is simple to operate, convenient and fast, the microphone measuring point can be determined in four steps, the height of the height control rod and the position of the transverse position control rod can be fixed, the height is accurate, the horizontal distance is accurate, the vertical angle is accurate, the accuracy is high, the repeatability is high, the device can ensure that the microphone positions are consistent every time, and the error is small.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A microphone position device and method for testing noise in an automobile are characterized in that: the novel height control device comprises a level meter, a height control rod, a transverse position control rod, a fixed rod and a microphone, wherein the bottom of the height control rod is rotatably connected with the fixed rod through a hinge, the top of the height control rod is connected with the transverse position control rod, the level meter is arranged on the height control rod, and the microphone is arranged on the transverse position control rod.
2. The microphone location device and method for noise testing in an automobile according to claim 1, wherein: the height control rod comprises a first height rod, a connecting rod and a second height rod, the bottom end of the first height rod is fixedly connected with the top end of the connecting rod, the top end of the second height rod is fixedly connected with the bottom end of the connecting rod, the first height rod is parallel to the second height rod, and the horizontal distance between the first height rod and the second height rod is 8 cm.
3. The microphone location device and method for noise testing in an automobile according to claim 1, wherein: the end part of the transverse position control rod is provided with an iron rod, and the horizontal length of the iron rod is 8 cm.
4. The microphone location device and method for noise testing in an automobile according to claim 1, wherein: the top of the height control rod is fixedly welded at the horizontal length midpoint of the transverse position control rod, and the length of the transverse position control rod is 40 cm.
5. The device and the method for detecting the position of the microphone in the noise inside the automobile according to the claim 1 are characterized in that the device comprises the following steps:
(1) inserting a fixed rod into a gap between a seat cushion and a backrest to ensure that a height control rod is positioned at the intersection line of the seat cushion and the backrest;
(2) moving the height control rod in the Y direction of the vehicle to enable the height control rod to be consistent with the coordinate of the seat center line in the Y direction of the vehicle;
(3) adjusting the level gauge to enable the bubble of the level gauge to be positioned in the middle and ensure that the height control rod is vertical;
(4) the position corresponding to the transverse position control rod is the microphone measuring point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010897087.2A CN112013950A (en) | 2020-08-31 | 2020-08-31 | Microphone position device and method for testing noise in automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010897087.2A CN112013950A (en) | 2020-08-31 | 2020-08-31 | Microphone position device and method for testing noise in automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112013950A true CN112013950A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010897087.2A Pending CN112013950A (en) | 2020-08-31 | 2020-08-31 | Microphone position device and method for testing noise in automobile |
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| Country | Link |
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| CN (1) | CN112013950A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2202409A (en) * | 1987-03-19 | 1988-09-21 | Shure Bros | Microphone mount |
| CN101670809A (en) * | 2009-10-13 | 2010-03-17 | 奇瑞汽车股份有限公司 | Fixing device of vehicle microphone |
| CN204578758U (en) * | 2015-03-18 | 2015-08-19 | 同济大学 | A kind of fixed device for microphone for internal car noise test |
| CN204575192U (en) * | 2015-01-19 | 2015-08-19 | 同济大学 | Microphone position locating device in a kind of car |
| CN204578719U (en) * | 2015-04-24 | 2015-08-19 | 无锡吉兴汽车声学部件科技有限公司 | Microphone holder in easy car |
| CN105187961A (en) * | 2015-07-27 | 2015-12-23 | 无锡吉兴汽车声学部件科技有限公司 | Fixing bracket for automobile acoustic experiment |
| CN205912208U (en) * | 2016-07-04 | 2017-01-25 | 无锡吉兴汽车声学部件科技有限公司 | A microphone installing support for noise test in car |
| CN207465062U (en) * | 2017-11-30 | 2018-06-08 | 北京车和家信息技术有限公司 | microphone fixing tool |
| CN208597144U (en) * | 2018-08-15 | 2019-03-12 | 奇瑞捷豹路虎汽车有限公司 | For the microphone holding device in automobile noise test |
| CN210862903U (en) * | 2019-07-30 | 2020-06-26 | 中国第一汽车股份有限公司 | Noise measuring device for automobile |
-
2020
- 2020-08-31 CN CN202010897087.2A patent/CN112013950A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2202409A (en) * | 1987-03-19 | 1988-09-21 | Shure Bros | Microphone mount |
| CN101670809A (en) * | 2009-10-13 | 2010-03-17 | 奇瑞汽车股份有限公司 | Fixing device of vehicle microphone |
| CN204575192U (en) * | 2015-01-19 | 2015-08-19 | 同济大学 | Microphone position locating device in a kind of car |
| CN204578758U (en) * | 2015-03-18 | 2015-08-19 | 同济大学 | A kind of fixed device for microphone for internal car noise test |
| CN204578719U (en) * | 2015-04-24 | 2015-08-19 | 无锡吉兴汽车声学部件科技有限公司 | Microphone holder in easy car |
| CN105187961A (en) * | 2015-07-27 | 2015-12-23 | 无锡吉兴汽车声学部件科技有限公司 | Fixing bracket for automobile acoustic experiment |
| CN205912208U (en) * | 2016-07-04 | 2017-01-25 | 无锡吉兴汽车声学部件科技有限公司 | A microphone installing support for noise test in car |
| CN207465062U (en) * | 2017-11-30 | 2018-06-08 | 北京车和家信息技术有限公司 | microphone fixing tool |
| CN208597144U (en) * | 2018-08-15 | 2019-03-12 | 奇瑞捷豹路虎汽车有限公司 | For the microphone holding device in automobile noise test |
| CN210862903U (en) * | 2019-07-30 | 2020-06-26 | 中国第一汽车股份有限公司 | Noise measuring device for automobile |
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Application publication date: 20201201 |