阅读说明：本技术 一种支架组件及具体该支架组件的噪声测试系统 (Bracket component and noise test system of specific bracket component ) 是由 陈强 王羽茜 于 2021-07-31 设计创作，主要内容包括：本发明公开了一种支架组件及具有该支架组件的噪声测试系统,支架组件包括可沿Z轴方向旋转的第一支架本体和可沿Y轴方向旋转的第二支架本体,且所述第二支架本体转动连接于所述第一支架本体,所述第二支架本体用以供待测试件可拆卸地安装,以实现待测试件沿X轴方向的转动调节。上述支架组件可以增加两个方向的转动自由度,以及待测试件的转动调节,从而可以增加待测试件与声源的角度的影响因素,这样可以解决传统测试方案中噪声影响因素较为单一的问题；通过更精确定位噪声对待测试件的影响,有助于对待测试件噪声敏感度更深入的分析,从而可以提高待测试件噪声敏感度测试的准确性,有助于为实现降噪方案多样性提供有价值的指导。(The invention discloses a bracket component and a noise test system with the same, wherein the bracket component comprises a first bracket body capable of rotating along the Z-axis direction and a second bracket body capable of rotating along the Y-axis direction, the second bracket body is rotatably connected to the first bracket body, and the second bracket body is used for detachably mounting a to-be-tested piece so as to realize the rotation adjustment of the to-be-tested piece along the X-axis direction. The bracket component can increase the rotational freedom degrees in two directions and the rotational adjustment of the piece to be tested, thereby increasing the influence factors of the angle between the piece to be tested and the sound source, and solving the problem that the noise influence factors are single in the traditional test scheme; the influence of noise on the test piece to be tested is more accurately positioned, so that the noise sensitivity of the test piece to be tested is more deeply analyzed, the accuracy of the noise sensitivity test of the test piece to be tested can be improved, and valuable guidance is provided for realizing the diversity of the noise reduction scheme.)

1. The utility model provides a bracket component (1), its characterized in that includes first support body (11) that can follow the rotation of Z axle direction and can follow the rotatory second support body (12) of Y axle direction, just second support body (12) rotate connect in first support body (11), second support body (12) are used for supplying to wait to test a (4) detachably installation to realize waiting to test a (4) rotation regulation along the X axle direction.

2. The rack assembly (1) according to claim 1, wherein said first rack body (11) comprises two oppositely disposed arms (111), and said second rack body (12) is rotatably connected to said two arms (111) by two first rotation axes disposed along the Y-axis direction, respectively.

3. The rack assembly (1) of claim 2, wherein said first rack body (11) further comprises a connecting rod (112) vertically connected to said two arms (111), and further comprises a second rotating shaft arranged along the Z-axis direction and rotatably connected to said connecting rod (112).

4. The bracket assembly (1) according to claim 3, further comprising a first dial (13) arranged coaxially with the first axis of rotation, and a second dial (14) arranged coaxially with the second axis of rotation.

5. The rack assembly (1) according to any one of claims 1 to 4, wherein said second rack body (12) is provided with an inner cavity (121) for receiving the piece to be tested (4), and further comprising a plurality of flexible connectors (15) for connecting the piece to be tested (4) to said second rack body (12) for mounting the piece to be tested (4) in said inner cavity (121).

6. The stent assembly (1) according to claim 5, wherein the second stent body (12) is provided with a plurality of mounting holes (122) distributed along the circumferential direction and used for the flexible connectors (15) to correspondingly penetrate through one another, and further comprises a plurality of fixing pieces (16) connected to the second stent body (12) and connected with the flexible connectors (15).

7. The stent assembly (1) according to claim 6, wherein the fixing member (16) is embodied as a screw, and the tightness of the flexible connecting member (15) is adjusted by screwing the screw to the second stent body (12).

8. A noise testing system, characterized in that it comprises a rack assembly (1) according to any one of claims 1-7.

9. The noise testing system according to claim 8, further comprising a sound source (2) for emitting noise and a carrier (3) for carrying the carriage assembly (1) and the sound source (2), wherein the carriage assembly (1) is rotatably connected to the carrier (3) by a second rotation axis.

10. The noise testing system of claim 9, further comprising:

the noise signal acquisition device (5) is used for being arranged on the piece to be tested (4) and acquiring a noise signal on the surface of the piece to be tested (4);

a sound source signal collecting device for collecting the sound source signal of the sound source (2);

the parameter acquisition device is used for acquiring the performance parameters of the piece (4) to be tested;

and the data processing device is connected with the noise signal acquisition device (5), the sound source signal acquisition device and the parameter acquisition device and obtains preset data conclusion through data processing.

Technical Field

The invention relates to the technical field of hardware testing, in particular to a bracket assembly. The invention also relates to a noise testing system with the bracket assembly.

Background

Hard disks have been widely used for various information devices as important storage devices. With the rapid increase of data capacity, the hard disk manufacturing technology is more and more precise, the storage capacity of a single hard disk is more and more, and the reliability and the service life of the hard disk also bring great challenges, wherein noise becomes one of the important elements influencing the service life of the hard disk.

In the prior art, for the noise test of the single hard disk, the single hard disk is generally placed on a lifting platform directly, and the distance between the hard disk and a sound source is adjusted by adjusting the height of the lifting platform, so that the test of the noise sensitivity of the hard disk is completed. However, the above scheme only considers the influence factor of the distance between the hard disk and the sound source, the influence factor of the test is single, and the accuracy and the reference value of the test are difficult to guarantee, so that the guidance for noise reduction optimization is limited.

Therefore, how to avoid the influence on the accuracy of the test due to the single influencing factor of the test is a technical problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

The invention aims to provide a bracket assembly which can provide rotational freedom degrees in two directions and enables a to-be-tested piece to be rotationally adjusted along the normal direction of the to-be-tested piece, so that the accuracy of noise sensitivity test of the to-be-tested piece can be improved. It is another object of the present invention to provide a noise testing system including the above-described standoff assembly.

In order to achieve the above object, the present invention provides a rack assembly, which includes a first rack body capable of rotating along a Z-axis direction and a second rack body capable of rotating along a Y-axis direction, wherein the second rack body is rotatably connected to the first rack body, and the second rack body is used for detachably mounting a to-be-tested piece, so as to realize the rotation adjustment of the to-be-tested piece along the X-axis direction.

Optionally, the first frame body includes two opposite support arms, and the second frame body is rotatably connected to the two support arms through two first rotation shafts disposed along the Y-axis direction.

Optionally, the first support body further includes a connecting rod vertically connected to the two support arms, and a second rotating shaft disposed along the Z-axis direction and rotatably connected to the connecting rod.

Optionally, the device further comprises a first dial coaxially arranged with the first rotating shaft, and a second dial coaxially arranged with the second rotating shaft.

Optionally, the second rack body is provided with an inner cavity for accommodating a to-be-tested piece, and the second rack body further comprises a plurality of flexible connecting pieces for connecting the to-be-tested piece and the second rack body so that the to-be-tested piece can be installed in the inner cavity.

Optionally, the second bracket body is provided with a plurality of mounting holes distributed along the circumferential direction and used for the flexible connectors to penetrate one by one, and the second bracket further comprises a plurality of fixing pieces connected to the second bracket body and connected with the flexible connectors.

Optionally, the fixing member is specifically a screw, and the tightness of the flexible connecting member is adjusted by screwing the screw to the second bracket body.

The invention also provides a noise testing system which comprises the bracket assembly.

Optionally, the sound source generating noise and the carrier carrying the bracket assembly and the sound source are further included, and the bracket assembly is rotatably connected to the carrier through a second rotating shaft.

Optionally, the method further comprises:

the noise signal acquisition device is used for being arranged on the piece to be tested and acquiring a noise signal on the surface of the piece to be tested;

a sound source signal collecting device for collecting a sound source signal of the sound source;

the parameter acquisition device is used for acquiring the performance parameters of the piece to be tested;

and the data processing device is connected with the noise signal acquisition device, the sound source signal acquisition device and the parameter acquisition device and obtains a preset data conclusion through data processing.

With respect to the above background art, the bracket assembly provided in the embodiment of the present invention includes a first bracket body and a second bracket body, wherein the first bracket body can rotate along a Z-axis direction, the second bracket body can rotate along a Y-axis direction, and the second bracket body is rotatably connected to the first bracket body, that is, on the basis that the first bracket body rotates along the Z-axis direction, the second bracket body can rotate along the Y-axis direction with respect to the first bracket body; meanwhile, the second support body can be detachably mounted on the to-be-tested piece, so that the to-be-tested piece can be rotationally adjusted along the X-axis direction. Therefore, the bracket assembly can provide rotational freedom degrees in two directions of a Y axis and a Z axis, and can be used for rotationally adjusting a to-be-tested piece along the X axis direction (the normal direction of the to-be-tested piece). Compared with the traditional lifting table only capable of adjusting the height, the bracket assembly provided by the embodiment of the invention can increase the rotational freedom degrees of the Y-axis and the Z-axis in two directions and the rotational adjustment of the piece to be tested along the X-axis direction, so that the influence factors of the angle between the piece to be tested and a sound source can be increased, and the problem that the noise influence factors are single in the traditional testing scheme can be solved; the influence of noise on the test piece to be tested is more accurately positioned, so that the noise sensitivity of the test piece to be tested is more deeply analyzed, the accuracy of the noise sensitivity test of the test piece to be tested can be improved, and valuable guidance is provided for realizing the diversity of the noise reduction scheme.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural view of a bracket assembly according to an embodiment of the present invention;

FIG. 2 is a partial enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural diagram of a noise testing system according to an embodiment of the present invention;

FIG. 4 is a testing schematic block diagram of a noise testing system.

Wherein:

1-a bracket component, 2-a sound source, 3-a carrying platform, 4-a to-be-tested piece and 5-a noise signal acquisition device;

11-a first bracket body, 111-a support arm and 112-a connecting rod;

12-second stent body, 121-inner cavity, 122-mounting hole;

13-a first dial;

14-a second dial;

15-a flexible connection;

16-fixing part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.

Referring to fig. 1 to 4, fig. 1 is a schematic structural view of a bracket assembly according to an embodiment of the present invention; FIG. 2 is a partial enlarged view of portion A of FIG. 1; FIG. 3 is a schematic structural diagram of a noise testing system according to an embodiment of the present invention; FIG. 4 is a testing schematic block diagram of a noise testing system.

As shown in fig. 1 and 2, a rack assembly 1 provided by an embodiment of the present invention includes a first rack body 11 and a second rack body 12, wherein the first rack body 11 is rotatable along a Z-axis direction, the second rack body 12 is rotatable along a Y-axis direction, and the second rack body 12 is rotatably connected to the first rack body 11, that is, the second rack body 12 is rotatable along the Y-axis direction relative to the first rack body 11 based on the rotation of the first rack body 11 along the Z-axis direction.

Thus, compared with the conventional lifting platform which can only test the noise sensitivity of the piece to be tested 4 by adjusting the distance between the piece to be tested 4 and the sound source 2, the support assembly 1 can increase the rotational freedom of the Y-axis and the Z-axis in two directions.

Meanwhile, the second bracket body 12 can be detachably mounted on the to-be-tested part 4, so that the to-be-tested part 4 can be rotationally adjusted along the X-axis direction. The rotation adjustment means that the mounting position of the to-be-tested object 4 on the second bracket body 12 is adjusted along the circumferential direction of the second bracket body 12 in a dismounting manner, so that different mounting positions of the to-be-tested object 4 on the second bracket body 12 under different testing times can be realized. For example, the top of the to-be-tested part 4 faces upward during the first test, the to-be-tested part 4 is installed on the second bracket body 12 after being rotated 90 degrees clockwise during the second test, and the to-be-tested part 4 is installed on the second bracket body 12 after being rotated 90 degrees clockwise during the third test. Of course, the rotation angle of the to-be-tested part 4 can be adjusted according to the requirement of the test in two adjacent tests, which is not limited in this document.

Therefore, the bracket assembly 1 can be used for rotatably adjusting the to-be-tested part 4 along the X-axis direction (the normal direction of the to-be-tested part 4) on the basis of providing the rotational freedom degrees in the Y-axis direction and the Z-axis direction.

Because of the traditional noise test, the test piece 4 to be tested is generally directly placed on the lifting platform, and the distance between the test piece 4 to be tested and the sound source 2 is adjusted by adjusting the height of the lifting platform, so that the test of the noise sensitivity of the test piece 4 to be tested is completed. However, the above solution only considers the distance between the tested object 4 and the sound source 2, and the noise is mainly excited on the upper surface of the tested object 4, and the relative angle between the sound source and the tested object 4 cannot be adjusted, and in addition, the acoustic impedance of the table top on which the tested object 4 is mounted is very large, which blocks the path of the noise received by the lower surface of the tested object 4, and is far from the practical application environment in the server where the tested object 4 is located. Therefore, the influence factors of the test are single, and the accuracy and the reference value of the test are difficult to guarantee, so that the guidance for noise reduction optimization is limited.

Compared with the traditional lifting table only capable of adjusting the height, the bracket assembly 1 provided by the embodiment of the invention can increase the rotational freedom degrees of the Y-axis and the Z-axis in two directions and the rotational adjustment of the piece to be tested 4 along the X-axis direction, so that the influence factors of the angle between the piece to be tested 4 and the sound source 2 can be increased, and the problem that the noise influence factors are single in the traditional testing scheme can be solved.

The influence of noise on the test piece 4 to be tested is more accurately positioned, so that the noise sensitivity of the test piece 4 to be tested can be deeply analyzed, the accuracy of the noise sensitivity test of the test piece 4 to be tested can be improved, and valuable guidance is provided for realizing the diversity of noise reduction schemes.

Of course, the test object 4 herein is embodied as a hard disk, which is used for a server. Besides the hard disk, the rack assembly 1 provided by the present embodiment can also be used for testing the noise interference resistance of other precision instruments or hardware in the server.

Since the hard disk has a noise sensitivity direction, especially the direction of the internal rotation axis of the hard disk, the direction regularity should be incorporated into the hard disk noise testing system through the bracket assembly 1. By adopting the bracket component 1, the multi-degree-of-freedom noise test can be realized.

Specifically, the first rack body 11 includes two oppositely disposed support arms 111, and the second rack body 12 is rotatably connected to the two support arms 111 through two first rotation shafts disposed along the Y-axis direction, respectively. The two support arms 111 are arranged along the Z-axis direction, and a space between the two support arms 111 is used for accommodating the second support body 12 and allowing the second support body 12 to rotate.

Meanwhile, the first support body 11 further comprises a connecting rod 112 vertically connected with the two support arms 111, so that the first support body 11 can rotate along the Z-axis direction conveniently, the first support body further comprises a second rotating shaft arranged along the Z-axis direction, and the second rotating shaft is rotatably connected with the connecting rod 112.

That is to say, the first bracket body 11 is specifically a U-shaped bracket body, the second bracket body 12 is rotatably connected between the two support arms 111 of the U-shaped bracket body through two first rotating shafts, and the U-shaped bracket body achieves the purpose of rotating along the Z-axis direction through a second rotating shaft arranged along the Z-axis direction.

In order to ensure the accuracy of the rotation, the bracket assembly 1 further comprises a first scale 13 and a second scale 14, wherein the first scale 13 is arranged coaxially with the first rotation axis and the second scale 14 is arranged coaxially with the second rotation axis. Therefore, in the noise test, the rotation angles of the first bracket body 11 and the second bracket body 12 can be accurately calibrated, which is beneficial to improving the accuracy of the noise sensitivity test.

In order to optimize the above embodiment, the second rack body 12 is provided with an inner cavity 121 for accommodating the to-be-tested piece 4, meanwhile, the to-be-tested piece 4 is connected to the second rack body 12 through a plurality of flexible connecting pieces 15, and the plurality of flexible connecting pieces 15 are used for connecting the to-be-tested piece 4 and the second rack body 12, so that the to-be-tested piece 4 is installed in the inner cavity 121.

Of course, according to actual needs, the second support body 12 may be specifically configured as an annular support body, for example, an annular support body having a circular inner cavity, and the to-be-tested device 4 may be suspended in the inner cavity 121 through a plurality of flexible connectors 15. Thus, the influence of the wall surface can be eliminated during testing.

The arrangement of the flexible connecting pieces 15 can buffer the vibration in the noise test process, and particularly, the flexible connecting pieces 15 arranged around the to-be-tested piece 4 can completely block the transmission path of the vibration, so that the influence of the self of the support assembly 1 and the external resonance of the support assembly 1 on the noise test of the to-be-tested piece 4 can be eliminated.

On the basis, the second bracket body 12 is provided with mounting holes 122, the mounting holes 122 are distributed along the circumferential direction of the second bracket body 12, and the mounting holes 122 are used for the flexible connecting pieces 15 to penetrate through one by one. Specifically, in order to facilitate the fixing of the flexible connecting member 15, the flexible connecting member further includes a plurality of fixing members 16, the fixing members 16 are connected to the second frame body 12, and the fixing members 16 are fixedly connected to one end of the flexible connecting member 15, which is far away from the test object 4.

In addition, in order to adjust the tightness of the flexible connecting element 15, the fixing element 16 is a screw rod, and the tightness of the flexible connecting element 15 is adjusted by screwing the screw rod to the second bracket body 12. Of course, the flexible connecting element 15 may be provided as an elastic cord.

So, the fastening of elasticity rope adopts mounting hole 122 and screw rod compound mode, and at this moment, mounting hole 122 can play the effect of direction, and the elasticity rope penetrates and wears out from the outside from the inboard of mounting hole 122, can change the direction of elasticity rope into along the circumference of second support body 12 by the radial change along second support body 12, can realize controlling the action of elasticity rope elasticity through the rotation of screw rod like this.

In the test process, the specific posture of the bracket assembly 1 is adjusted as follows: the second rotating shaft at the bottom is taken as an axis to realize the rotation adjustment along the normal direction of the carrying platform 3; the first rotating shaft is used as an axis to realize rotation along the normal direction of the side surface; the fixed-angle rotation adjustment of the piece to be tested 4 along the axial direction of the second support body 12 is realized by a series of mounting holes 122 arranged on the second support body 12 at fixed-angle intervals.

The invention provides a noise testing system, which comprises the bracket assembly 1 described in the above embodiment.

As shown in fig. 3, the noise testing system further includes a sound source 2 and a carrier 3, wherein the sound source 2 is used for emitting noise during a noise testing process, the carrier 3 is used for carrying the support assembly 1 and the sound source 2, the sound source 2 can be fixedly or detachably connected to the carrier 3, and the support assembly 1 is rotatably connected to the carrier 3 through a second rotating shaft.

It should be noted that, by detachably connecting the sound source 2 to the carrier 3, the adjustment of the distance between the sound source 2 and the to-be-tested object 4 and the change of the noise amplitude can be facilitated.

Meanwhile, in the test process of the hard disk, influence factors of a noise frequency band can be increased, so that the measurement factors in the noise test are more comprehensive, the accurate orthogonal test can be carried out including the frequency band, the amplitude, the angle, the distance and the like of the noise, the single-factor influence rule is obtained, and the test of the noise sensitivity of the to-be-tested part 4 can be more accurate.

The noise frequency band affecting the hard disk performance is in the range of 500Hz-20000Hz and is mostly concentrated in the high frequency band. Based on the fundamental characteristics of sound propagation, the higher the frequency, the stronger the directivity of sound propagation, i.e., the higher frequency sound waves propagate in the form of sound beams.

It should be noted that, since the hard disk has a noise sensitivity direction, especially the direction of the internal rotation axis of the hard disk, the direction regularity should be incorporated into the hard disk noise test system through the above-mentioned bracket assembly 1.

By adopting the bracket component 1, the multi-degree-of-freedom noise test can be realized, the included angle between the sound wave propagation direction and the axial direction of the hard disk rotating shaft is taken as a main test object in the test process, meanwhile, the factors such as sound pressure, frequency and the like can be integrated, the factors such as wall reverberation and the like are eliminated, and the influence of accurate noise propagation on the hard disk can be obtained.

In the actual test process, the angle and the distance between the hard disk monomer and the sound source 2 are freely changed, and the sound source signal, the noise signal on the surface of the hard disk and the hard disk IOPS (read-write frequency per second) are collected in real time, so that the factors influencing the noise sensitivity of the hard disk are accurately positioned, and the quantification of the influencing factors can be realized.

In order to facilitate the collection of the sound source signal, the noise signal on the surface of the hard disk and the read-write times of the hard disk, the noise test system further comprises a noise signal collection device 5, a sound source signal collection device and a parameter collection device, wherein the noise signal collection device 5 is arranged on the piece to be tested 4 and is used for collecting the noise signal on the surface of the piece to be tested 4; the sound source signal acquisition device is used for acquiring a sound source signal of a sound source 2; the parameter acquisition device is used for acquiring the performance parameters of the piece to be tested 4.

The noise signal acquisition device 5 can be a microphone, the microphone can be fixedly connected to the hard tube through a U-shaped bracket, and the microphone and the rotating shaft of the hard disk are coaxially arranged; the sound source signal acquisition device and the parameter acquisition device can be integrally arranged on the computer, namely, the computer can automatically acquire performance parameters such as the sound source signal of the sound source 2 and the read-write times of the hard disk by connecting the sound source 2 and the hard disk with the computer.

In addition, the noise test system further comprises a data processing device, the data processing device is connected with the noise signal acquisition device 5, the sound source signal acquisition device and the parameter acquisition device, the data processing device obtains preset data conclusion through data processing, and the data processing device is specifically an operation module integrated in a computer.

The preset data conclusion is a regular conclusion formed by real-time data fluctuation of hard disk read-write times. Specifically, based on the bracket assembly 1, the sound source 2 and the carrier 3, a free angle adjustment characteristic is utilized, a distance single-factor test is added, after a multi-angle orthogonal test is performed, the filtering bandwidth range in a noise signal is adjusted through real-time hard disk reading and writing frequency fluctuation data, so that the influence of factors such as a noise frequency band, an amplitude value, a distance and an angle on a hard disk is formed, data is recorded, and a rule conclusion is formed.

As shown in fig. 4, the testing principle of the noise testing system is as follows: phonation-test-acquisition-data comparison. Specifically, firstly, generating a continuous broadband noise signal, acquiring a specific frequency sound signal in a filtering mode, and outputting the specific frequency sound signal to hardware sound production equipment; then, the noise test system provided by the embodiment is adopted to perform multi-angle orthogonal tests, and single-factor tests such as noise amplitude, sound source 2 distance and the like are supplemented to verify the consistency of the multi-angle tests; then, the sound source signal of the sound source 2, the noise signal on the surface of the hard disk and the IOPS (read-write times per second) of the hard disk are collected, and the filtering range is adjusted according to the IOPS fluctuation of the hard disk, so that the noise influence of the full frequency band is obtained.

Therefore, the noise test system has multiple degrees of freedom and can avoid the influence of a wall surface structure on noise to the maximum extent, so that the hard disk can carry out all-around noise test in an environment similar to a free field, and the test degree of freedom and accuracy are improved; through the bracket component 1 that can 360 degrees rotations and the suspension structure of flexible connectors 15, realize the hard disk and adjust for the arbitrary angle of sound source 2 to the noise that can realize arbitrary angle is to the excitation of hard disk, avoids the influence of wall and resonance simultaneously.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The noise testing system and the bracket assembly thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are provided only to help understand the concepts of the present invention and the core concepts thereof. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.