CN220437566U - Acoustic power detection device - Google Patents
Acoustic power detection device Download PDFInfo
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- CN220437566U CN220437566U CN202320900158.9U CN202320900158U CN220437566U CN 220437566 U CN220437566 U CN 220437566U CN 202320900158 U CN202320900158 U CN 202320900158U CN 220437566 U CN220437566 U CN 220437566U
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- acoustic power
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- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides an acoustic power detection device, and belongs to the technical field of detection devices. The sound power detection device comprises an arc-shaped support rod and a connecting seat, wherein the arc-shaped support rod comprises a plurality of arc-shaped support rods, and each arc-shaped support rod is in mortise and tenon connection with the connecting seat. According to the acoustic power detection device provided by the utility model, each arc-shaped support rod is in mortise and tenon connection with the connecting seat, and the assembly and disassembly of the arc-shaped support rods and the connecting seat can be rapidly realized without a connecting piece, so that the acoustic power detection device is more simplified and convenient, and is convenient to store and transport, thereby being more suitable for objective requirements of sound source flow test.
Description
Technical Field
The utility model relates to the technical field of detection devices, in particular to an acoustic power detection device.
Background
With the progress of technology and the improvement of living standard of people, household appliances are more and more convenient. However, the home appliances bring convenience to consumers and noise.
The high-efficiency detection of the acoustic power of the home appliances is important to improve the home appliances and reduce the noise of the home appliances. The sound source is multidirectional, multidirectional flowing detection needs to be carried out on the sound source, but the traditional sound power detection device is complex in assembly and difficult to detach, so that the fluidity and convenience of noise detection are reduced, and the efficiency of noise detection is influenced.
Disclosure of Invention
The utility model provides an acoustic power detection device which is used for solving the defects of complicated assembly and difficult disassembly of the acoustic power detection device in the prior art.
The utility model provides an acoustic power detection device which comprises arc-shaped support rods and a connecting seat, wherein each arc-shaped support rod comprises a plurality of arc-shaped support rods, and each arc-shaped support rod is in mortise and tenon connection with the connecting seat.
According to the acoustic power detection device provided by the utility model, one end of each arc-shaped supporting rod is provided with the mortise, the connecting seat is provided with a plurality of mortises, and the mortise of each arc-shaped supporting rod is inserted into the mortises in a one-to-one correspondence manner.
According to the acoustic power detection device provided by the utility model, the connecting seat comprises the prismatic body, the number of the side surfaces of the prismatic body is consistent with that of the arc-shaped supporting rods, and the mortises are distributed on the side surfaces of the prismatic body.
According to the acoustic power detection device provided by the utility model, the acoustic power detection device further comprises a connecting clamping strip, and two ends of the connecting clamping strip are detachably connected with two adjacent arc-shaped support rods.
According to the acoustic power detection device provided by the utility model, the two ends of the connecting clamping strip are respectively provided with the connecting clamping head, the two opposite sides of the arc-shaped supporting rod are respectively provided with the grooves, and the connecting clamping heads are clamped in the corresponding grooves.
The utility model provides an acoustic power detection device, which also comprises a pickup and a sleeve, at least one pickup is mounted on each arc-shaped supporting rod, and the pickup is detachably mounted on the arc-shaped supporting rods through the sleeves.
According to the sound power detection device provided by the utility model, the pickup is fixedly connected with the sleeve, and the sleeve is detachably connected with the arc-shaped supporting rod.
According to the acoustic power detection device provided by the utility model, the sleeve is in threaded connection with the arc-shaped supporting rod.
According to the acoustic power detection device provided by the utility model, the acoustic power detection device further comprises a fastener, wherein the wall of the sleeve is provided with a mounting hole, and the fastener is arranged in the mounting hole in a penetrating manner so as to fixedly connect the pickup with the sleeve.
According to the acoustic power detection device provided by the utility model, the fastening piece is a screw.
According to the acoustic power detection device provided by the utility model, each arc-shaped support rod is in mortise and tenon connection with the connecting seat, and the assembly and disassembly of the arc-shaped support rods and the connecting seat can be rapidly realized without a connecting piece, so that the acoustic power detection device is more simplified and convenient, and is convenient to store and transport, thereby being more suitable for objective requirements of sound source flow test.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a general assembly view of an acoustic power detection apparatus provided by the present utility model;
FIG. 2 is an exploded view of the acoustic power detection apparatus provided by the present utility model;
FIG. 3 is a schematic diagram showing the connection of the arc-shaped support rod and the connecting seat according to the present utility model;
FIG. 4 is a schematic connection diagram of the arc-shaped support bar and the connection clip strip provided by the utility model;
fig. 5 is a schematic diagram showing connection between a pickup and a sleeve according to the present utility model.
Reference numerals:
1. an arc-shaped supporting rod; 11. mortise head; 12. a groove; 2. a connecting seat; 21. mortises; 3. connecting the clamping strips; 31. connecting a clamping head; 4. a sound pickup; 5. a sleeve; 51. an external thread; 6. screwing the screw quickly; 7. and (5) extending the line.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The features of the terms "first", "second", and the like in the description and in the claims of this application may be used for descriptive or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The acoustic power detection method adopted by the acoustic power detection device provided by the utility model is a free field method, namely, the acoustic power detection is carried out on a certain sound source under the environment of approximate free field, and the sound pressure level of a plurality of distribution points on a spherical surface or a hemispherical surface taking the sound source as the center is required to be measured, so that the sound power level is obtained.
The following describes an acoustic power detection apparatus provided by the present utility model with reference to fig. 1 to 5.
As shown in fig. 1 and 2, the acoustic power detection device provided by the utility model comprises an arc-shaped support rod 1 and a connecting seat 2. The arc-shaped supporting rods 1 comprise a plurality of arc-shaped supporting rods, and each arc-shaped supporting rod 1 is connected with the connecting seat 2 in a mortise and tenon mode.
The arc-shaped supporting rod 1 has enough rigidity and light weight. In an alternative embodiment, the arc-shaped support rod 1 is an aluminum alloy hollow tube. In yet another alternative embodiment, the arc support bar 1 is a steel tube. The arc-shaped supporting rods 1 are uniformly distributed along the circumferential direction of the connecting seat 2. The number of the arc-shaped supporting rods 1 is six, seven or eight.
The upper end of each arc-shaped supporting rod 1 is connected with the connecting seat 2 in a mortise and tenon mode, and is convenient to assemble and disassemble. Optionally, at least one end of part of the arc-shaped supporting rods 1 is provided with mortise, one end of other arc-shaped supporting rods 1 is provided with mortise, and mortises and mortise heads are correspondingly distributed on the connecting seat 2 so that the mortise heads and the mortises are in one-to-one correspondence connection. For convenient processing and manufacturing, the shape and the material of a plurality of arc-shaped supporting rods 1 are the same. Specifically, the end of each arc-shaped supporting rod 1 is provided with a mortise 11, the connecting seat 2 is provided with a plurality of mortises 21, and the mortise 11 of a plurality of arc-shaped supporting rods 1 are connected with the mortises 21 in a one-to-one correspondence. Of course, mortises can also be arranged at the upper ends of each arc-shaped supporting rod 1, mortise heads are arranged at the connecting seats 2, and the mortise heads are inserted into the mortises, so long as mortise and tenon connection between the arc-shaped supporting rods 1 and the connecting seats 2 can be realized.
As shown in fig. 2, the connection base 2 and the arc-shaped support rods 1 together form a hemispherical bracket. The hemispherical support forms a spherical envelope. A plurality of sound pickups 4 are distributed on the envelope surface. When the test device is used, the hemispherical support is aligned to the sound source, so that the spherical center falls on the sound source, the distances between all the sound pickups 4 and the sound source are consistent, and the test requirement is met. The sound pressure level of the sound source is collected by the plurality of sound collectors 4 simultaneously, and the testing precision and the testing efficiency are greatly improved. The sound power level of the sound source is calculated based on a plurality of sound pressure levels acquired by the plurality of sound pickups 4 in combination with a sound power level calculation formula.
Wherein, the calculation formula of sound power level is:
L W ＝L p +10lg(S/S 0 )
wherein L is w : sound power level in decibels; l (L) P : the average value of a plurality of sound pressure levels collected by the sound pick-up 4 is in decibels; s: the surface area of the hemispherical bracket is expressed in square meters: s is S 0 :1 square meter.
Because each arc bracing piece 1 is connected with 2 mortise and tenon joints of connecting seat, after the test, directly pull out arc bracing piece 1 from connecting seat 2 in, can realize dismantling fast, be convenient for accomodate and transport.
According to the acoustic power detection device provided by the utility model, each arc-shaped support rod 1 is in mortise and tenon connection with the connecting seat 2, and the assembly and disassembly of the arc-shaped support rods 1 and the connecting seat 2 can be rapidly realized without a connecting piece, so that the acoustic power detection device is more simplified and convenient, and is convenient to store and transport, thereby being more suitable for objective requirements of sound source flow test.
In a specific embodiment of the present utility model, one end of each arc-shaped supporting rod 1 is provided with a mortise 11, the connecting seat 2 is provided with a plurality of mortises 21, and the mortise 11 of each arc-shaped supporting rod 1 is inserted into the mortises 21 in a one-to-one correspondence manner.
Specifically, as shown in fig. 3, the upper end of each arc-shaped support rod 1 is provided with a mortise head 11. The mortise head 11 protrudes outwards from the end part of the arc-shaped supporting rod 1. The connecting seat 2 is provided with a plurality of mortises 21. During assembly, the mortise 21 is respectively inserted with the mortise heads 11. When the connecting seat is disassembled, the mortise 21 is pulled out of the mortise 11, and the arc-shaped supporting rod 1 and the connecting seat 2 can be separated.
According to the acoustic power detection device provided by the utility model, the mortise 21 is arranged on the connecting seat 2 by arranging the mortise 11 at one end of each arc-shaped supporting rod 1, so that the configuration of each arc-shaped supporting rod 1 is consistent, and the processing and the manufacturing are convenient.
The connecting seat 2 comprises a prism, the number of the side surfaces of the prism is consistent with that of the arc-shaped supporting rods 1, and the mortises 21 are distributed on the side surfaces of the prism.
The number of the side faces of the prism is consistent with that of the arc-shaped supporting rods 1, and mortises 21 are arranged on each side face of the prism, so that each side face of the prism is abutted with one arc-shaped supporting rod 1. For example, the arc-shaped supporting rod 1 has six rods and six mortise holes 11, and the prism is a hexagonal prism, and the six sides are respectively provided with a mortise 21.
Of course, the number of the side faces of the prism body can be more than that of the arc-shaped supporting rods 1, so that the arc-shaped supporting rods 1 can be conveniently added according to the requirement.
The acoustic power detection device provided by the utility model further comprises a connecting clamping strip 3, and two ends of the connecting clamping strip 3 are detachably connected with two adjacent arc-shaped support rods 1.
As shown in fig. 1, the connection clip 3 connects the lower ends of the adjacent arc-shaped support rods 1, thereby fixing the arc-shaped support rods 1. In order to make the whole acoustic power detection device light and portable, the connecting clamping strip 3 is preferably a straight strip type hollow long tube. Every two adjacent arc-shaped supporting rods 1 are connected through a connecting clamping strip 3. The number of the connecting clamping strips 3 is consistent with that of the arc-shaped supporting rods 1. For example, the number of the arc-shaped supporting rods 1 is six, and the number of the connecting clamping strips 3 is also six.
The end part of the connecting clamping strip 3 is in mortise-tenon connection with the corresponding arc-shaped supporting rod 1 or is detachably connected by means of a locking piece. When in use, the connecting clamping strip 3 can be quickly connected with the arc-shaped supporting rod 1, so that the acoustic power detection device is more stable; after the use is finished, the disassembly is convenient, and the storage is convenient.
In a specific embodiment, two ends of the connecting clamping strip 3 are respectively provided with a connecting clamping head 31, two opposite sides of the arc-shaped supporting rod 1 are respectively provided with a groove 12, and the connecting clamping heads 31 are clamped in the corresponding grooves 12.
Specifically, as shown in fig. 4, both ends of the connecting clamping strip 3 are provided with connecting clamping heads 31, which is convenient for processing and manufacturing. Grooves 12 are respectively arranged on two opposite sides of the lower end of the arc-shaped supporting rod 1, and a connecting clamping head 31 is matched with the grooves 12.
Taking the assembly of one connecting clamping strip 3 and two adjacent arc-shaped support rods 1 as an example, during the assembly, the connecting clamping head 31 at one end of the connecting clamping strip 3 is clamped in the groove 12 at one side of one arc-shaped support rod 1, and the connecting clamping head 31 at the other end of the connecting clamping strip 3 is clamped in the groove 12 at the other side of the other arc-shaped support rod 1, so that the space between the two adjacent arc-shaped support rods 1 is restrained by the connecting clamping strip 3 to avoid shaking. When the arc-shaped support rod is detached, the connecting clamping head 31 is taken out of the groove 12, and the arc-shaped support rod 1 is separated from the connecting clamping strip 3. The connection manner of the other connection clip strips 3 and the arc-shaped support rods 1 is the same as that described above, and is not described in detail herein.
By arranging the connecting clamping heads 31 at the two ends of the connecting clamping strip 3, grooves 12 are respectively arranged at the two opposite sides of the arc-shaped supporting rod 1, so that the processing and the manufacturing are convenient; the connection clips 31 are engaged with the corresponding grooves 12 so as to detachably connect the arc-shaped support bar 1 with the connection clip 3.
The sound power detection device provided by the utility model further comprises sound pick-up 4 and sleeves 5, at least one sound pick-up 4 is arranged on each arc-shaped supporting rod 1, and the sound pick-up 4 is detachably arranged on the arc-shaped supporting rods 1 through the sleeves 5.
A plurality of sound pickups 4 are distributed on the hemispherical bracket. In the envelope surface with the same radius, the sound pressure levels of a plurality of points can be monitored by the plurality of sound pick-ups 4 at the same time. The sound power level of the sound source is obtained through the average value of the sound pressure levels of the plurality of points, and the accuracy and the efficiency of sound source testing are greatly improved.
Specifically, install at least one adapter 4 on every arc bracing piece 1, guarantee the quantity of monitoring sound pressure level to make sound source monitoring point position distribute evenly. Optionally, the total number of the pickups 4 is ten, wherein a part of the arc-shaped supporting rods 1 is provided with one pickups 4, and other arc-shaped supporting rods 1 are provided with two pickups 4. Of course, three or more microphones 4 may be disposed on each arc-shaped support rod 1 as needed.
The pickup 4 can be directly arranged on the arc-shaped supporting rod 1, and can also be indirectly arranged by means of other structural members. As shown in fig. 5, the pickup 4 is detachably mounted to the arc-shaped support rod 1 through a sleeve 5. Specifically, the sleeves 5 have a plurality, and one sleeve 5 corresponds to one pickup 4. On the one hand, the sleeve 5 plays a role in protecting the pickup 4, and prevents the pickup 4 from being damaged. On the other hand, the sleeve 5 can firmly fix the pickup 4 on the arc-shaped support rod 1.
It should be noted that a pickup 4 is disposed at the bottom of the connection base 2. The pickup 4 is arranged at the bottom of the connecting seat 2 so as to enable the distribution of sound source detection points to be more uniform. The connection method of the pickup 4 and the connecting seat 2 refers to the connection mode of other pickup 4 and the arc-shaped supporting rod 1.
In addition, the pickup 4 has an extension cord 7, and is connected to an external device by communication with the extension cord 7, thereby realizing transmission of sound source signals.
According to the sound power detection device provided by the utility model, at least one pickup 4 is arranged on each arc-shaped supporting rod 1, so that the sound source monitoring points are uniformly distributed, and the number of monitoring sound pressure levels is ensured; the pickup 4 can be detachably mounted on the arc-shaped supporting rod 1 through the sleeve 5, so that the pickup 4 can be protected, and the pickup 4 can be firmly fixed on the arc-shaped supporting rod 1.
Optionally, pickup 4 and sleeve 5 fixed connection, sleeve 5 and arc bracing piece 1 detachable connection.
As shown in fig. 5, one end of the pickup 4 is fixed to the sleeve 5 by plugging. The sleeve 5 is detachably connected with the arc-shaped supporting rod 1. For example, the sleeve 5 is screwed with the arc-shaped support rod 1. Specifically, each arc-shaped support rod 1 is provided with at least one threaded hole. The number of the threaded holes is not equal to less than the number of sleeves 5. The sleeve 5 is provided with an external thread 51. The external thread 51 is matched with the internal thread of the threaded hole to realize the threaded connection of the sleeve 5 and the connecting hole.
Alternatively, the pickup 4 is detachably connected with the sleeve 5, and the sleeve 5 is detachably connected with the arc-shaped supporting rod 1. For example, the pickup 4 is removably mounted to the sleeve 5 for replacement in the event of a malfunction of the pickup 4.
The acoustic power detection device provided by the utility model further comprises a fastener, wherein the wall of the sleeve 5 is provided with a mounting hole, and the fastener is penetrated through the mounting hole to fixedly connect the pickup 4 with the sleeve 5.
As shown in figure 5 of the drawings, the wall of the sleeve 5 is provided with a mounting hole. During the equipment, in pickup 4 part inserted and locate sleeve 5, the fastener supports with pickup 4 to establish from the side through the mounting hole to increase the friction between pickup 4 and the sleeve 5 inside wall, make pickup 4 firmly fixed in sleeve 5. Preferably, the fastener is a quick-turn screw 7.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. The acoustic power detection device is characterized by comprising arc-shaped support rods and connecting seats, wherein each arc-shaped support rod comprises a plurality of arc-shaped support rods, and each arc-shaped support rod is in mortise and tenon connection with each connecting seat; the arc-shaped support rod is characterized by further comprising a connecting clamping strip, wherein two ends of the connecting clamping strip are detachably connected with two adjacent arc-shaped support rods.
2. The acoustic power detection device according to claim 1, wherein one end of each arc-shaped supporting rod is provided with a mortise, the connecting seat is provided with a plurality of mortises, and the mortise is inserted in a plurality of mortises in a one-to-one correspondence manner by the mortise of the arc-shaped supporting rods.
3. The acoustic power detection apparatus of claim 2, wherein the connection base includes a prism, the number of sides of the prism is identical to the number of the arc-shaped support bars, and the mortises are arranged on the sides of the prism.
4. The acoustic power detecting apparatus according to claim 1, wherein both ends of the connecting clip strip are provided with connecting clips, opposite sides of the arc-shaped support rod are respectively provided with grooves, and the connecting clips are clipped in the corresponding grooves.
5. The acoustic power detection apparatus of claim 1, further comprising a pickup and a sleeve, wherein at least one of the pickup is mounted on each of the arc-shaped support bars, and the pickup is detachably mounted on the arc-shaped support bar through the sleeve.
6. The acoustic power detection apparatus of claim 5, wherein the pickup is fixedly coupled to the sleeve, and wherein the sleeve is detachably coupled to the arcuate support bar.
7. The acoustic power detection apparatus of claim 6, wherein the sleeve is threadably coupled to the arcuate support rod.
8. The acoustic power detection apparatus of claim 6, further comprising a fastener, wherein a wall of the sleeve is provided with a mounting hole, and wherein the fastener is disposed through the mounting hole to fixedly connect the pickup with the sleeve.
9. The acoustic power detection apparatus of claim 8, wherein the fastener is a quick-turn screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320900158.9U CN220437566U (en) | 2023-04-20 | 2023-04-20 | Acoustic power detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320900158.9U CN220437566U (en) | 2023-04-20 | 2023-04-20 | Acoustic power detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220437566U true CN220437566U (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320900158.9U Active CN220437566U (en) | 2023-04-20 | 2023-04-20 | Acoustic power detection device |
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| Country | Link |
|---|---|
| CN (1) | CN220437566U (en) |
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- 2023-04-20 CN CN202320900158.9U patent/CN220437566U/en active Active
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