CN102565191A - Device for evaluating sound insulation and absorption performance of automobile body part - Google Patents
Device for evaluating sound insulation and absorption performance of automobile body part Download PDFInfo
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- CN102565191A CN102565191A CN2012100363523A CN201210036352A CN102565191A CN 102565191 A CN102565191 A CN 102565191A CN 2012100363523 A CN2012100363523 A CN 2012100363523A CN 201210036352 A CN201210036352 A CN 201210036352A CN 102565191 A CN102565191 A CN 102565191A
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Abstract
The invention discloses a device for evaluating sound insulation and absorption performance of an automobile body part. The device comprises a front receiver, a computer testing system, a first microphone, a second microphone, and a box body which is enclosed by four panels, a volume sound source and a movable cover plate; a hole is formed in the middle of the movable cover plate, and the automobile body part to be detected is arranged in the hole; and the first microphone is arranged on a panel, and the second microphone is arranged outside the box body. The movable cover plate can be detached from the box body or assembled on the box body; after the movable cover plate is detached, sound produced by the volume sound source can be heard outside the box body; and after the movable cover plate is assembled, the sound transmitted after the automobile body part on the movable cover plate absorbs the sound is heard, namely the sound insulation and absorption performance of the automobile body part is felt subjectively. Moreover, after the movable cover plate is assembled, the first microphone receives a sound signal in the box body, and the second microphone receives a sound signal outside the box body, namely the sound insulation and absorption performance of the automobile body part can be calculated, so the sound insulation and absorption performance of the automobile body part can be tested objectively.
Description
Technical field
The present invention relates to material acoustics performance test field, be specifically related to a kind of car body component at a distance from the sound absorption qualities evaluating apparatus.
Background technology
Along with developing of automobile industry, the consumer requires increasingly highly to ride comfort, so the NVH of automobile (noise, vibration and sound vibration roughness) performance also receives the attention of each big automobile enterprise day by day.The correct use of automobile-used acoustical material and plate material is to reduce one of effective ways of noise vibration in the car, and the separated sound absorption qualities of present acoustical material and plate material is the important indicator that guarantees to realize its function.At present, the NVH industry has the method for testing and the software of many test performance of accoustic material, like the sound-absorption coefficient of test materials such as standing wave tube, sound source, BK software, and little and the separated sound absorption qualities that can not the subjective feeling material of area but it is drawn materials.It is the better mode of estimating automobile NVH performance that subjective evaluation combines, Gu singly analyze comprehensive inadequately from objective examination's data.
Summary of the invention
The object of the present invention is to provide a kind of car body component material at a distance from sound absorption qualities subjective evaluation device, it can measure the separated sound absorption qualities of the parts of surveying through the instrument objective record, also can be through the separated sound absorption qualities of meat ear parts that subjective feeling is surveyed.
A kind of car body component of the present invention is at a distance from the sound absorbing capabilities evaluating apparatus; Comprise preposition receiver, the computer test system that is connected with the output terminal of preposition receiver and first, second microphone that is connected with the input end of preposition receiver; It is characterized in that: this device also comprises casing; This casing is surrounded by four panels of end face, bottom surface, front, back and the volume sound source in left side and the removable cover on right side, is provided with perforate at the middle part of said removable cover; First microphone is arranged on the panel, and it is stretched in the casing by the sound end, and second microphone is arranged on outside the casing, and it is rectified removable cover by sound.Be arranged with guide groove in front with on the right-hand member of two panels of back, removable cover is connected with casing through this guide groove.In volume sound source and panel contact position encapsulant is set.Top at said removable cover is provided with handle.
Beneficial effect of the present invention is: removable cover can unload or assemble through guide groove from casing; When unloading removable cover; The observer hears the sound that the volume sound source is sent outside casing; Load onto removable cover then, hear the sound that after the car body component on the removable cover absorbs, spreads out of through the meat ear again, just realized the purpose of subjective feeling car body component at a distance from sound absorption qualities.On the other hand; After loading onto removable cover, make volume sound source sounding, first microphone receives the voice signal in the casing; Second microphone receives the outer voice signal of casing; Again through preposition receiver with two signal conveys in the computer test system, can write down, calculate the separated sound absorption qualities of car body component, so also realized the purpose of objective examination's car body component at a distance from sound absorption qualities.
Description of drawings
Fig. 1 is the synoptic diagram of casing;
Fig. 2 is the synoptic diagram of removable cover;
Fig. 3 is the synoptic diagram that removable cover cooperates with guide groove;
Fig. 4 is the embodiment figure of subjective feeling car body component at a distance from sound absorption qualities;
Fig. 5 is the embodiment figure of objective examination's car body component at a distance from sound absorption qualities;
Fig. 6 is the embodiment figure that tests the solid acoustical material separately.
Embodiment
Engaging accompanying drawing and embodiment below does further to set forth in detail to the present invention:
Embodiment one: like Fig. 1, Fig. 2, shown in Figure 3; A kind of car body component is at a distance from the sound absorbing capabilities evaluating apparatus; Comprise preposition receiver 10, the computer test system 9 that is connected with the output terminal of preposition receiver and the first microphone 8a that is connected with the input end of preposition receiver 10, the second microphone 8b; This device also comprises casing, and this casing is surrounded by four panels 1 of end face, bottom surface, front, back and the volume sound source 4 in left side and the removable cover 2 on right side, and guarantees good seal between each face; Be provided with perforate 2a at the middle part of said removable cover 2, car body component to be measured is arranged in this perforate 2a; The first microphone 8a is arranged on the panel 1 of end face, and it is stretched in the casing by the sound end, and the second microphone 8b is arranged on outside the casing, and it is rectified removable cover 2 by sound.Be arranged with guide groove 7 in front with on the right-hand member of two panels 1 of back, removable cover 2 is connected with casing through this guide groove 7.At volume sound source 4 and panel 1 contact position encapsulant 3 is set.Be conveniently assemble and disassemble, handle 2b be set at the top of said removable cover 2.
As shown in Figure 4; When this embodiment of utilization carries out subjective feeling to car body component; Car body component is arranged among the perforate 2a of removable cover, the observer is same position outside casing, listens the sound of distinguishing that the volume sound source is sent when loading onto removable cover and no removable cover respectively; Just can be subjective draw the audible difference under the two states, experience the separated sound absorption qualities of car body component.
As shown in Figure 5, when this embodiment of utilization carries out objective record, test to car body component, car body component is arranged among the perforate 2a of removable cover; And removable cover is contained on the casing; The second microphone 8b is arranged on the position over against removable cover, and the distance of microphone 8b and removable cover is 1m in this enforcement, opens volume sound source 4 then; Can in computer test system 9, draw the signal difference of first and second microphones, just obtain the separated sound absorption qualities of car body component accurately.
Embodiment two, and when testing the solid acoustical material separately, as shown in Figure 6, because of the area of survey solid acoustical material is bigger, Gu the perforate 2c on the removable cover is bigger, all the other embodiments are all identical with the foregoing description one with technical characterictic.
Claims (4)
1. a car body component is at a distance from the sound absorbing capabilities evaluating apparatus; Computer test system (9) that comprise preposition receiver (10), is connected and first microphone (8a) that is connected with the input end of preposition receiver (10), second microphone (8b) with the output terminal of preposition receiver; It is characterized in that: this device also comprises casing; This casing is surrounded by end face, bottom surface, front, four panels (1) of back and the volume sound source (4) in left side and the removable cover (2) on right side, is provided with perforate (2a) at the middle part of said removable cover (2); First microphone (8a) is arranged on the panel (1), and it is stretched in the casing by the sound end; Second microphone (8b) is arranged on outside the casing, and it is rectified removable cover (2) by sound.
2. car body component according to claim 1 is characterized in that at a distance from the sound absorption qualities evaluating apparatus: be arranged with guide groove (7) in front with on the right-hand member of two panels (1) of back, removable cover (2) is connected with casing through this guide groove (7).
3. car body component according to claim 1 is characterized in that at a distance from the sound absorption qualities evaluating apparatus: at volume sound source (4) and panel (1) contact position encapsulant (3) is set.
4. car body component according to claim 1 and 2 is characterized in that: at the top of said removable cover (2) handle (2b) is set at a distance from the sound absorption qualities evaluating apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100363523A CN102565191A (en) | 2012-02-17 | 2012-02-17 | Device for evaluating sound insulation and absorption performance of automobile body part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100363523A CN102565191A (en) | 2012-02-17 | 2012-02-17 | Device for evaluating sound insulation and absorption performance of automobile body part |
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| CN102565191A true CN102565191A (en) | 2012-07-11 |
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| CN2012100363523A Pending CN102565191A (en) | 2012-02-17 | 2012-02-17 | Device for evaluating sound insulation and absorption performance of automobile body part |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308143A (en) * | 2013-07-02 | 2013-09-18 | 无锡吉兴汽车声学部件科技有限公司 | Plaster mold tool capable of improving sound absorption testing result reliability of automobile acoustic part |
| CN106226397A (en) * | 2016-08-31 | 2016-12-14 | 江苏金坛长荡湖新能源科技有限公司 | A kind of arrangements for automotive doors acoustics leakage performance method of testing |
| CN108760889A (en) * | 2018-03-01 | 2018-11-06 | 江铃汽车股份有限公司 | Automotive floor panel utters long and high-pitched sounds air radiation acoustical damping properties recognition methods to rear axle |
| CN108918681A (en) * | 2018-06-13 | 2018-11-30 | 苏州朵唯智能科技有限公司 | Glass soundproof effect automatic checkout equipment |
| CN109324120A (en) * | 2018-11-30 | 2019-02-12 | 重庆长安汽车股份有限公司 | A kind of speed changer sound transmission loss test method and test macro |
| CN109827728A (en) * | 2019-03-06 | 2019-05-31 | 北京市劳动保护科学研究所 | Damping structure anti-acoustic capability test bracket, experimental rig and its method |
| CN116399952A (en) * | 2023-06-08 | 2023-07-07 | 深圳东原电子有限公司 | Intelligent evaluation method and system for sound insulation and shock absorption performance of acoustic material |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308143A (en) * | 2013-07-02 | 2013-09-18 | 无锡吉兴汽车声学部件科技有限公司 | Plaster mold tool capable of improving sound absorption testing result reliability of automobile acoustic part |
| CN103308143B (en) * | 2013-07-02 | 2016-04-13 | 无锡吉兴汽车声学部件科技有限公司 | Improve the plaster mold frock of acoustic part of automobile sound-absorbing test result reliability |
| CN106226397A (en) * | 2016-08-31 | 2016-12-14 | 江苏金坛长荡湖新能源科技有限公司 | A kind of arrangements for automotive doors acoustics leakage performance method of testing |
| CN108760889A (en) * | 2018-03-01 | 2018-11-06 | 江铃汽车股份有限公司 | Automotive floor panel utters long and high-pitched sounds air radiation acoustical damping properties recognition methods to rear axle |
| CN108760889B (en) * | 2018-03-01 | 2020-11-27 | 江铃汽车股份有限公司 | Method for identifying attenuation characteristic of rear axle howling air radiation sound by automobile floor |
| CN108918681A (en) * | 2018-06-13 | 2018-11-30 | 苏州朵唯智能科技有限公司 | Glass soundproof effect automatic checkout equipment |
| CN108918681B (en) * | 2018-06-13 | 2020-12-25 | 苏州朵唯智能科技有限公司 | Automatic detection equipment for sound insulation effect of glass |
| CN109324120A (en) * | 2018-11-30 | 2019-02-12 | 重庆长安汽车股份有限公司 | A kind of speed changer sound transmission loss test method and test macro |
| CN109827728A (en) * | 2019-03-06 | 2019-05-31 | 北京市劳动保护科学研究所 | Damping structure anti-acoustic capability test bracket, experimental rig and its method |
| CN109827728B (en) * | 2019-03-06 | 2020-10-09 | 北京市劳动保护科学研究所 | Damping structure noise reduction performance test support, test device and method |
| CN116399952A (en) * | 2023-06-08 | 2023-07-07 | 深圳东原电子有限公司 | Intelligent evaluation method and system for sound insulation and shock absorption performance of acoustic material |
| CN116399952B (en) * | 2023-06-08 | 2023-08-18 | 深圳东原电子有限公司 | Intelligent evaluation method and system for sound insulation and shock absorption performance of acoustic material |
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Application publication date: 20120711 |