CN103344326A - Acoustical power testing frame - Google Patents
Acoustical power testing frame Download PDFInfo
- Publication number
- CN103344326A CN103344326A CN2013102706202A CN201310270620A CN103344326A CN 103344326 A CN103344326 A CN 103344326A CN 2013102706202 A CN2013102706202 A CN 2013102706202A CN 201310270620 A CN201310270620 A CN 201310270620A CN 103344326 A CN103344326 A CN 103344326A
- Authority
- CN
- China
- Prior art keywords
- acoustical power
- power testing
- testing jig
- test
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses an acoustical power testing frame which comprises a plane net-shaped frame and a testing device positioning frame, wherein the testing device positioning frame is movably connected to the plane net-shaped frame to fixedly install a testing device. The acoustical power testing frame is strong in bearing capacity, stability of layout erection of acoustical power testing test points is improved, a deformation phenomenon cannot occur in the acoustical power testing process, positions of the test points cannot deviate, test positioning is accurate and stable, the acoustical power testing frame is simple in structure and convenient to install, influences on an acoustics environment are small, and accuracy of acoustical power testing is further improved.
Description
Technical field
The present invention relates to the acoustical testing technical field, and be particularly related to a kind of acoustical power testing jig.
Background technology
The test of acoustical power be widely used in automobile, Aero-Space, household electrical appliance, computing machine and communicate by letter, every field such as industrial products, product is carried out noise testing and acoustics characteristic test.A kind of comparatively common acoustical power method of testing is the free field method, namely sound source is placed semi-free (semianechoic room), on the hemisphere face of test centered by sound source or other have the sound pressure level of some well-distributed pointses on certain symmetric test surfaces, and then try to achieve sound power level.
The form of acoustic current power test frame mostly is the arc support guide rail greatly to be formed, and has following shortcoming yet utilize existing acoustical power testing jig to carry out the acoustical power test:
1. according to the difference of sound source size to be measured, the size of needed acoustical power testing jig is also just different.Because the curved appearance of support guide restriction, when test large-size sound source, just need to use the bigger acoustical power testing jig of size, but because gravity effect, oversize acoustical power testing jig is owing to the gravity of self adds that the weight of acoustical power proving installation produces deformation, cause the position of acoustical power test point to be offset, influence the accuracy of test position fix.
2. same because the curved appearance restriction of arc support guide rail, in the process of its integral cutting moulding, than higher, and required board dimension is bigger to the requirement of machining precision, can cause the waste of surplus material after the cutting, this has just increased manufacture difficulty and the manufacturing cost of acoustical power testing jig.
3. for large-sized acoustical power frame, the material section of supporting structure is long-pending also need relatively large, also can the phase strain big to the influence of acoustic environment
Summary of the invention
In view of this, the object of the present invention is to provide a kind of acoustical power testing jig, big to the sound field influence in order to solve in the prior art acoustical power testing jig, bearing capacity is little, poor stability, manufacturing cost high-technology problem.
Acoustical power testing jig provided by the invention, it comprises: the plane grid framework; The proving installation locating rack is movably connected on the grid framework of described plane, to install and fix proving installation.
Further, described plane grid framework is spliced by a plurality of perforated plate bending parts.
Further, described plane grid framework is polygon reticulate texture or circular reticulate texture.
In sum, acoustical power testing jig provided by the invention adopts the lifting mode, bearing capacity is strong, improves acoustical power and test the stability that the layout of measuring point is set up, the phenomenon of can not caving in the sound power test process, test point can not be offset by occurrence positions, test position fix is accurately stable, and simple in structure, easy installation and removal, and less to the acoustic enviroment influence, further improved the accuracy of acoustical power test.For existing acoustical power testing jig, mostly be fixed measure greatly, the test radius is immutable, and point position is fixed, and the present invention is the acoustical power testing jig of two kinds of different radiis of compatibility simultaneously, and carrying out the different radii test for needs provides convenience.
Description of drawings
Figure 1 shows that the structural representation of acoustical power testing jig in the prior art;
Figure 2 shows that the structural representation of the acoustical power testing jig that one embodiment of the invention provides;
Figure 3 shows that the side view of the acoustical power testing jig that one embodiment of the invention provides.
Embodiment
See also Fig. 1, it is depicted as the structural representation of acoustical power testing jig in the prior art.
As shown in Figure 1, acoustical power testing jig 100 comprises a plurality of arc support guide rails 110, and an end of described a plurality of arc support guide rails 110 links together, and integral body is the part ball-type.When utilizing this acoustical power testing jig 100 to test, acoustical power testing jig 100 places on the ground of semianechoic room, and the acoustical power proving installation as microphone, is fixed on the arc support guide rail 110 of part sphere and tests.
Existing acoustical power testing jig is when the bigger sound source of test size, himself size is also wanted corresponding expansion, and then cause acoustical power testing jig 100 to cause acoustical power testing jig 100 to produce bulk deformations because of self weight and the weight of proving installation, and then cause the skew of proving installation anchor point, and then accuracy of test and stability have been influenced.In addition, because existing acoustical power testing jig 100 needs to carry out the integral cutting moulding in processing and fabricating, the phenomenon of waste of material is serious, causes manufacturing cost higher.
And the present invention is considering on the basis of above problem, adopted the netted structural design in plane, and the proving installation locating rack of cooperation activity, when test, adopt the lifting mode to test sound source to be measured, thereby avoided when test large-size sound source, because own wt and proving installation weight cause the situation of acoustical power testing jig distortion, guaranteed accuracy and the stability of test position fix.
For purpose of the present invention, feature are become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is further described.
See also Fig. 2 and in conjunction with referring to Fig. 3, it is depicted as the structural representation of the acoustical power testing jig that one embodiment of the invention provides.
Acoustical power testing jig 200, it comprises: plane grid framework 210 and proving installation locating rack 220, proving installation locating rack 220 are movably connected on the described plane grid framework 210, to install and fix proving installation.
Adopted the netted structural design in plane, and cooperate proving installation locating rack for convenience detach, when test, only need acoustical power testing jig 200 mast-ups are located on the sound source to be measured, thereby when test large-size sound source, on the one hand acoustical power testing jig 200 self size needn't be along with the corresponding expansion of sound source to be measured, and then the problem that can not deform, on the other hand, even under special circumstances, when needing acoustical power testing jig 200 to increase size, because the netted design in its plane, the proving installation locating rack of cooperation activity, and adopt the lifting test mode, therefore avoided the generation of acoustical power testing jig bulk deformation.
Therefore, all can avoid causing because of own wt and proving installation weight the situation of acoustical power testing jig distortion under the above-mentioned two kinds of situations of the acoustical power testing jig that utilizes the embodiment of the invention to provide, guaranteed accuracy and the stability of test position fix.
In addition, in time spent not, proving installation locating rack 220 can be removed, and plane grid framework 210 can place acoustic enviroment, and acoustic enviroment is not had influence, easy installation and removal.
In one embodiment of this invention, described plane grid framework 210 is spliced by a plurality of perforated plate bending parts.The acoustical power testing jig that the aluminium cutting of adopting compared to existing technology forms, its reflection to sound field is little, has further reduced the influence to sound source to be measured, has improved the accuracy of test.
In one embodiment of this invention, described plane grid framework 210 is polygon reticulate texture or circular reticulate texture.Adopt reticulate texture, measure radius variable, satisfy the needs of different measuring radius and measurement standard.But the present invention is not limited thereto, and all planforms of above-mentioned functions that can realize all comprise within the scope of the present invention.
In sum, the main part of the acoustical power testing jig that the embodiment of the invention provides has adopted the netted structural design in plane, and cooperates dismountable proving installation locating rack, forms the acoustical power testing jig.When sound source being carried out the acoustical power test, this acoustical power testing jig mast-up can be located on this sound source to be measured, netted structural framing location placement acoustical power proving installation is tested on the plane.Owing to adopt the detachable proving installation locating rack of the netted respective outer side edges in plane, therefore, during at the large-size sound source, the plane reticulate texture of this acoustical power testing jig self has stronger bearing capacity, and adopt the mounting means of lifting, can avoid causing because of own wt and proving installation weight the situation of acoustical power testing jig distortion fully, accuracy and the stability of test position fix have been guaranteed, and the low reflection of the material of this acoustical power testing jig employing perforated plate, further reduced the influence to the acoustical power test.
Though the present invention discloses as above with preferred embodiment; so it is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (3)
1. an acoustical power testing jig is characterized in that, comprising: the plane grid framework; The proving installation locating rack is movably connected on the grid framework of described plane, to install and fix proving installation.
2. acoustical power testing jig according to claim 1 is characterized in that, described plane grid framework is spliced by a plurality of perforated plate bending parts.
3. acoustical power testing jig according to claim 1 is characterized in that, described plane grid framework is polygon reticulate texture or circular reticulate texture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310270620.2A CN103344326B (en) | 2013-06-28 | 2013-06-28 | Acoustical power testing jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310270620.2A CN103344326B (en) | 2013-06-28 | 2013-06-28 | Acoustical power testing jig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103344326A true CN103344326A (en) | 2013-10-09 |
| CN103344326B CN103344326B (en) | 2017-08-01 |
Family
ID=49279142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310270620.2A Active CN103344326B (en) | 2013-06-28 | 2013-06-28 | Acoustical power testing jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103344326B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928615A (en) * | 2016-06-16 | 2016-09-07 | 中国电力科学研究院 | Noise testing device |
| CN106679797A (en) * | 2016-11-16 | 2017-05-17 | 中国电力科学研究院 | Paralleling-reactor sound-shield sound reduction measuring method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201429462Y (en) * | 2009-02-13 | 2010-03-24 | 北京声望声电技术有限公司 | Sound power measuring stand |
| CN201653538U (en) * | 2010-03-05 | 2010-11-24 | 上海声望声学工程有限公司 | Sound power measuring rack |
| US20120070009A1 (en) * | 2010-03-19 | 2012-03-22 | Nike, Inc. | Microphone Array And Method Of Use |
| CN203364958U (en) * | 2013-06-28 | 2013-12-25 | 上海声望声学工程有限公司 | Acoustical power testing support |
-
2013
- 2013-06-28 CN CN201310270620.2A patent/CN103344326B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201429462Y (en) * | 2009-02-13 | 2010-03-24 | 北京声望声电技术有限公司 | Sound power measuring stand |
| CN201653538U (en) * | 2010-03-05 | 2010-11-24 | 上海声望声学工程有限公司 | Sound power measuring rack |
| US20120070009A1 (en) * | 2010-03-19 | 2012-03-22 | Nike, Inc. | Microphone Array And Method Of Use |
| CN203364958U (en) * | 2013-06-28 | 2013-12-25 | 上海声望声学工程有限公司 | Acoustical power testing support |
Non-Patent Citations (1)
| Title |
|---|
| 褚志刚等: "基于波束形成缩放声强的声源局部声功率计算", 《声学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928615A (en) * | 2016-06-16 | 2016-09-07 | 中国电力科学研究院 | Noise testing device |
| CN106679797A (en) * | 2016-11-16 | 2017-05-17 | 中国电力科学研究院 | Paralleling-reactor sound-shield sound reduction measuring method and device |
| CN106679797B (en) * | 2016-11-16 | 2021-04-23 | 中国电力科学研究院 | Method and device for testing sound insulation quantity of sound insulation cover of shunt reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103344326B (en) | 2017-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104597289A (en) | Acceleration sensor tri-axis simultaneous testing correction and testing method | |
| CN103344326A (en) | Acoustical power testing frame | |
| CN103465237A (en) | Adjustable fixture | |
| CN203364958U (en) | Acoustical power testing support | |
| CN106021776B (en) | A kind of aircraft structure test part is anti-bending and measuring device and its measurement method | |
| CN203024670U (en) | Automobile left front column reinforcing plate detection upright column | |
| CN103196759B (en) | Detection apparatus and detection method of displacement of force application point used for testing rock fracture toughness | |
| CN202485884U (en) | Vibration testing apparatus | |
| JP5961812B1 (en) | Center of gravity measurement device | |
| US8904659B2 (en) | Signal generator for electromagnetic measurement and electromagnetic measuring system using same | |
| CN205785530U (en) | Solar simulator assembly backboard temperature testing device | |
| CN206420919U (en) | One kind test probe | |
| CN203566671U (en) | Adjustable jig | |
| CN216115701U (en) | Cell-phone center hole site detection tool | |
| CN216283278U (en) | Measuring device | |
| CN202083305U (en) | Measuring tool for airplane rib part | |
| CN208579703U (en) | A kind of phone housing detection components | |
| CN202719935U (en) | Lever arm detection platform | |
| CN202057560U (en) | Radial rigidity testing device of high-elasticity couplers | |
| CN202204456U (en) | Special decentration detection device for bent axle | |
| CN102226676A (en) | Measuring apparatus for disc | |
| CN217110761U (en) | Outer diameter measuring tool for volute end face and annular step | |
| CN204329872U (en) | A kind of frock detecting the face of cylinder and cylinder end face squareness | |
| CN202691527U (en) | Wall hanging bracket suitable for display | |
| CN202710391U (en) | Support for testing keel bearing capacity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 200336, room 607-608, Tian Rui building, 31 Shuangliu Road, Shanghai, Changning District Applicant after: SHANGHAI SWAT ACOUSTICS TECHNOLOGY CO., LTD. Address before: 200335, room 31, 608 Shuangliu Road, Shanghai, Changning District Applicant before: Shanghai Shengwang Acoustics Engineering Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |