CN211578368U - Reflected sound wave phase regulation and control device based on solid plate - Google Patents
Reflected sound wave phase regulation and control device based on solid plate Download PDFInfo
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- CN211578368U CN211578368U CN201922232226.5U CN201922232226U CN211578368U CN 211578368 U CN211578368 U CN 211578368U CN 201922232226 U CN201922232226 U CN 201922232226U CN 211578368 U CN211578368 U CN 211578368U
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Abstract
A reflected sound wave phase regulating device based on a solid plate is used for changing the reflected phase of the reflected wave of incident sound wave in water and comprises a plurality of structural units which are arranged in parallel, the side surface of each structural unit is fixedly connected with the side surface of the adjacent structural unit, each structural unit comprises a solid part and a cavity part, the solid part is a hollow cuboid, the cavity part is a hollow part in the solid part, the thicknesses of the left side wall and the right side wall of the solid part are equal, the thicknesses of the upper wall and the lower wall of the solid part are equal, and the cavity part is filled with water; the utility model relates to a reflection sound wave phase regulation and control device based on solid board's beneficial effect is: the utility model discloses a phase regulation and control device surface has utilized the solid board mode, can regulate and control the reflection phase of sound wave in aqueous, has wide operating band, can be used to acoustics focus and acoustics oblique reflection, and the parameter that changes is few moreover, has very high industrial application and worth.
Description
Technical Field
The utility model relates to an acoustics device technical field especially relates to a reflection sound wave phase regulation and control device based on solid board.
Background
The phase regulation of sound wave is very hot, it has extensive prospect in the application of anomalous reflection of sound wave, can realize the reflection focusing of sound wave and the inclined plane reflection of sound wave. At present, the amplitude and phase regulation of reflected sound waves is realized in the air, but the realization of the sound wave phase regulation in water requires rigid boundary conditions, and the rigid boundary conditions are utilized to eliminate the coupling effect between structural units, but the rigid boundary conditions in water are difficult to realize, and the coupling effect between the units is difficult to avoid. Therefore, there is a need for an acoustic device that can achieve phase control of reflected sound waves in water, thereby achieving reflected focusing of sound waves and inclined reflection of sound waves, and is easy to control.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a reflection sound wave phase regulation and control device based on solid board for change the reflection phase of the reflection wave of incident sound wave in aqueous, the device includes a plurality of constitutional unit that arrange side by side, each constitutional unit's side and adjacent constitutional unit's side fixed connection, constitutional unit includes entity portion and cavity portion, entity portion is hollow cuboid, entity portion material is hard solid material, cavity portion does well kenozooecium in the entity portion, cavity portion is the cuboid, cavity portion is located entity portion center just link up the entity portion, the thickness of lateral wall equals about entity portion, the thickness of wall about entity portion equals, be full of water in the cavity portion.
Further, the material of the solid part is epoxy resin, and the material parameters of the epoxy resin are as follows: density rho 1800kg/m3Velocity of longitudinal wave cl2740m/s, transverse wave speed ct＝1600m/s。
Further, the side surface of the structural unit is fixedly connected with the side surface of the adjacent structural unit in an adhesion mode.
Further, the outer edge of the cross section of the solid part forms a first rectangle, the first rectangle is a square with the side length smaller than lambda, and lambda is the wavelength of incident sound waves in water.
Furthermore, the outer edge of the cross section of the cavity part forms a second rectangle, the width and the height of the second rectangle are respectively k and w, and the size of the width k and the height w of the second rectangle can be changed to change the phase position of the reflected wave.
The utility model relates to a reflection sound wave phase regulation and control device based on solid board's beneficial effect is: the acoustic device can realize the change range of the reflection phase [0,2 pi ] of the acoustic wave in water, has wider working frequency band, can be used for acoustic focusing and acoustic oblique reflection, has less changed parameters and is convenient to control.
Drawings
Fig. 1 is the utility model discloses a reflection sound wave phase regulation and control device based on solid board.
Fig. 2 is a schematic structural diagram of the structural unit 1 in fig. 1.
Fig. 3 is a schematic cross-sectional structure of the structural unit 1 in fig. 1.
Fig. 4 is a schematic diagram of the phase adjusting device according to the present invention, which is obliquely reflected under the condition of vertical incident of sound wave.
Fig. 5 is a schematic diagram of the phase adjusting device according to the present invention focusing incident sound waves.
In the figure: 1-structural unit, 11-solid part, 12-cavity part, 13-first rectangle, 14-second rectangle, 15-incident sound wave, 16-reflected sound wave, 17-focus.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the present invention relates to a reflected sound wave phase control device based on a solid plate, which is used for changing the reflected phase of the reflected wave of the incident sound wave in water, thereby adjusting the reflected angle of the reflected sound wave, and realizing the reflected focusing of the incident sound wave and the inclined reflection of the sound wave in water, wherein the frequency of the incident sound wave is f, the wavelength of the incident sound wave is λ, and the wave velocity of the sound wave in water is c 1490m/s, that is, λ is c/f; the device includes a plurality of constitutional unit 1, constitutional unit 1 is the cuboid, and is a plurality of constitutional unit 1 is in the coplanar and arranges side by side to lateral wall fixed connection between adjacent constitutional unit 1, for adjacent constitutional unit 1 lateral wall adopts the bonding mode to connect in this embodiment.
The structural unit 1 includes a solid portion 11, the solid portion 11 is a cuboid, a cavity portion 12 is provided in the middle of the solid portion 11, the solid portion 11 is made of a hard solid material, in this embodiment, the solid portion 11 is made of epoxy resin, and the material parameters of the epoxy resin are as follows: density rho 1800kg/m3Velocity of longitudinal wave cl2740m/s, transverse wave speed ct1600m/s, cavity portion 12 is the cuboid also, cavity portion 12 is located the centre of entity portion 11, the central axis of entity portion 11 with the central axis coincidence of cavity portion 12, cavity portion 12 runs through entity portion 11.
As shown in fig. 3, fig. 3 is a schematic cross-sectional view of the structural unit 1, the outer edge of the cross section of the solid portion 11 forms a first rectangle 13, the edge of the cross section of the cavity 12 is a second rectangle 14, the width and height of the first rectangle are p and h, respectively, preferably, the first rectangle is square, i.e., p ═ h, the side lengths p and h of the first rectangle are both less than λ, and p ═ h ═ 2 λ/5, the width and height of the second rectangle 13 are k and w, respectively, the thicknesses of the left and right side walls of the solid portion are equal, and the thicknesses of the upper and lower walls of the solid portion are t, i.e., t ═ h-w)/2.
The utility model relates to a wide band reflection focus acoustics device based on solid board, through adjusting the width k and the high w of cavity portion 12 can realize the range of change of sound wave reflection phase [0,2 pi ] in aqueous, and will be a plurality of constitutional unit arranges according to the law, makes the reflection phase of sound wave bundle change according to the law to reach the reflection of sound wave inclined plane and the reflection focus of sound wave, the device has the operating band of broad, and the parameter volume is few, the control of being convenient for.
As shown in fig. 4, the utility model relates to a wide band reflection focusing acoustics device based on solid board is to incident sound wave surface reflection's process: selecting the frequency of the sound wave within the operating frequency band to be f0(ii) a A plurality of structural units 1 with the same width k of the cavity part 12 are arranged in parallel and placed in water, and the frequency is vertically emitted to the structural units 1Rate f0The reflected acoustic wave 16 of the incident acoustic beam 15 is reflected at an angle θ to the incident acoustic beam.
As shown in fig. 5, the utility model relates to a wide band reflection focusing acoustics device based on solid board is to the process of reflection sound wave focusing: selecting the frequency of the sound wave within the operating frequency band to be f1(ii) a Dividing the plurality of structural units 1 into two groups, aligning and fixing the structural units 1 in each group, wherein the width k of the cavity part of the plurality of structural units 1 in each group is gradually changed from wide to narrow; symmetrically and vertically placing the two groups of arranged structural units 1 in water; transmitting the frequency f to the two groups of structure units 1 at the midperpendicular of the two groups of structure units1An incident sound beam 15, the reflected sound wave 16 of which incident sound beam 15 is focused at a focus 17 at the midperpendicular of the two sets of structural units 1.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a reflection sound wave phase regulation and control device based on solid board for change the reflection phase of incident sound wave reflection wave in aqueous, its characterized in that: the device includes a plurality of constitutional units that arrange side by side, each constitutional unit's side and adjacent constitutional unit's side fixed connection, each constitutional unit includes entity portion and cavity portion, the entity portion is hollow cuboid, the entity portion material is hard solid material, the cavity portion is hollow portion in the entity portion, the cavity portion is the cuboid, the cavity portion is located entity portion center and link up the entity portion, the thickness of lateral wall equals about the entity portion, the thickness of the wall about the entity portion equals, be full of water in the cavity portion.
2. The phase control device for the reflected sound wave based on the solid plate as claimed in claim 1, wherein: the solid part is made of epoxy resin, and the material parameters of the epoxy resin are as follows: density rho 1800kg/m3Velocity of longitudinal wave cl2740m/s, transverse wave speed ct＝1600m/s。
3. The phase control device for the reflected sound wave based on the solid plate as claimed in claim 1, wherein: the side surfaces of the structural units are fixedly connected with the side surfaces of the adjacent structural units in an adhesion mode.
4. The phase control device for the reflected sound wave based on the solid plate as claimed in claim 1, wherein: the outer edge of the cross section of the solid part forms a first rectangle, the first rectangle is a square with the side length smaller than lambda, and lambda is the wavelength of incident sound waves in water.
5. The phase control device for the reflected sound wave based on the solid plate as claimed in claim 1, wherein: the outer edge of the cross section of the cavity part forms a second rectangle, the width and the height of the second rectangle are respectively k and w, and the reflected wave phase can be changed by changing the size of the width k and the height w of the second rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922232226.5U CN211578368U (en) | 2019-12-11 | 2019-12-11 | Reflected sound wave phase regulation and control device based on solid plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922232226.5U CN211578368U (en) | 2019-12-11 | 2019-12-11 | Reflected sound wave phase regulation and control device based on solid plate |
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| CN211578368U true CN211578368U (en) | 2020-09-25 |
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| CN201922232226.5U Expired - Fee Related CN211578368U (en) | 2019-12-11 | 2019-12-11 | Reflected sound wave phase regulation and control device based on solid plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114446277A (en) * | 2021-10-20 | 2022-05-06 | 西安交通大学 | Omnidirectional broadband sound energy gathering device |
-
2019
- 2019-12-11 CN CN201922232226.5U patent/CN211578368U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114446277A (en) * | 2021-10-20 | 2022-05-06 | 西安交通大学 | Omnidirectional broadband sound energy gathering device |
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Granted publication date: 20200925 Termination date: 20211211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |