CN117805793A - Total reflection acoustic screen and preparation method and application thereof - Google Patents
Total reflection acoustic screen and preparation method and application thereof Download PDFInfo
- Publication number
- CN117805793A CN117805793A CN202311844977.7A CN202311844977A CN117805793A CN 117805793 A CN117805793 A CN 117805793A CN 202311844977 A CN202311844977 A CN 202311844977A CN 117805793 A CN117805793 A CN 117805793A
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- acoustic
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- cover plate
- acoustic wave
- reflection
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- 238000002360 preparation method Methods 0.000 title claims description 7
- 238000005192 partition Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000008030 elimination Effects 0.000 claims abstract description 6
- 238000003379 elimination reaction Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 229910052573 porcelain Inorganic materials 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 2
- 239000011358 absorbing material Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000013016 damping Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000012814 acoustic material Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a total reflection acoustic screen which sequentially comprises an acoustic wave reflection bottom plate, a partition plate and an acoustic wave reflection cover plate from bottom to top, wherein the partition plate and the acoustic wave reflection cover plate are bonded into a whole and then provided with a plurality of circular through holes distributed in an annular shape, the acoustic wave reflection bottom plate is bonded on the partition plate, and the inner side walls of the through holes are bonded with films; wherein, baffle and film are noise elimination material. Through the acoustic screen filtering provided by the invention, the backward scattered wave of the active sonar can be well subjected to noise elimination, so that a smaller target can be detected further, and the target can be positioned more accurately. The sound sieve provided by the invention has the advantages of simple structure, portability and low cost, can obviously improve the detection capability of the active sonar, and has application and industrial market prospects.
Description
Technical Field
The invention relates to the technical field of underwater sound engineering, in particular to a total reflection acoustic screen and a preparation method and application thereof.
Background
Sonar is a very important scientific equipment, and as more and more ocean areas are explored, how to finish exploration of ocean resources is greatly valued by countries. The underwater acoustic wave device utilizes the propagation characteristic of acoustic waves under water, completes underwater detection and communication tasks through electroacoustic conversion and information processing, and is the most widely and most important device in underwater acoustics.
However, the sound wave emitted by the active sonar is disturbed by the environmental noise, which makes the resolution of the target difficult.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a total reflection acoustic screen and a preparation method and application thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a total reflection acoustic screen which sequentially comprises an acoustic wave reflection bottom plate, a partition plate and an acoustic wave reflection cover plate from bottom to top, wherein a plurality of circular through holes which are distributed in an annular shape are formed in the partition plate and the acoustic wave reflection cover plate after being bonded into a whole, the acoustic wave reflection bottom plate is bonded on the partition plate, and a film is bonded on the inner side wall of each through hole; wherein, baffle and film are the noise elimination material, the distribution of through-hole is:
wherein R is n The radial distance from the center of the through hole to the center of the sound wave reflecting cover plate; f is the focal length of the system; n represents the nth turn of through holes, and the maximum number of through holes in the nth turn is:
preferably, the sum of the thicknesses of the baffle and the acoustic wave reflecting cover plate is:
wherein,
further, d is the thickness of the baffle, t is the thickness of the acoustic wave reflecting cover plate, k is an integer, and λ is the wavelength of the selected acoustic wave in the water.
Preferably, the shape and the size of the sound wave reflecting bottom plate, the shape and the size of the baffle plate and the sound wave reflecting cover plate are all round.
Preferably, the acoustic reflective backing plate and acoustic reflective cover plate are any good reflective acoustic material, including but not limited to a smooth surfaced ceramic or copper plate.
Preferably, the separator and the film are polyurethane rubber.
The invention provides a preparation method of a total reflection acoustic screen,
the method comprises the following steps:
(1) Selecting materials, namely selecting an acoustic wave reflecting bottom plate, a partition plate and an acoustic wave reflecting cover plate, wherein the acoustic wave reflecting bottom plate and the acoustic wave reflecting cover plate are porcelain plates or copper plates with smooth surfaces, and the partition plate is made of a sound-damping material;
(2) Firstly, bonding a baffle plate and a sound wave reflecting cover plate into a whole, and then punching a through hole;
(3) Bonding the sound wave reflecting bottom plate after punching, and bonding a thin layer of sound-damping material in the hole of the sound wave reflecting cover plate;
(4) And (3) packaging and fixing the outer ring of the integral structure bonded in the step (3) by adding a frame, and then using the product.
The invention is applied to sonar noise reduction and filtering.
The invention has the beneficial effects that:
the acoustic screen provided by the invention can focus waves with the wavelength lambda of normal incidence to a focus, and acoustic waves with other wavelengths and from other directions on the focus can not be concentrated, so that the acoustic screen is weak. The active sonar echo can be well detected by placing the sonar at the sound wave focus of the sound screen.
The acoustic screen provided by the invention has good selectivity on the direction and frequency of the sound wave, namely, the unwanted noise wave from different directions or with different frequencies can be filtered well, the signal sound wave is focused to the range of half wavelength with high quality, and the detection signal in the water body can be effectively obtained by the sonar.
Through the acoustic screen filtering provided by the invention, the backward scattered wave of the active sonar can be well subjected to noise elimination, so that a smaller target can be detected further, and the target can be positioned more accurately. The sound sieve provided by the invention has the advantages of simple structure, portability and low cost, can obviously improve the detection capability of the active sonar, and has application and industrial market prospects.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1-2 are schematic structural diagrams of a total reflection acoustic screen according to an embodiment of the present invention;
fig. 3 is a manufacturing flow chart provided in an embodiment of the present invention.
Reference numerals illustrate:
1-sound wave reflection bottom plate, 2-baffle, 3-sound wave reflection apron, 4-through-hole, 5-film.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Examples:
as shown in fig. 1-2, the invention provides a total reflection acoustic screen, which sequentially comprises an acoustic wave reflection bottom plate 1, a partition plate 2 and an acoustic wave reflection cover plate 3 from bottom to top, wherein the partition plate 2 and the acoustic wave reflection cover plate 3 are adhered into a whole and then are provided with a plurality of circular through holes 4 distributed in a ring shape, the acoustic wave reflection bottom plate 1 is adhered to the partition plate 2, the inner side walls of the through holes 4 are adhered with films 5, and the acoustic screen can be used after the whole device is packaged and fixed by adding a frame; wherein the partition plate 2 and the film 5 are made of a sound damping material, the through holes 4 provided in the present embodiment are circular in shape, but not as a limitation of the present invention,
the gap between the through holes 4 on each ring is as short as possible,
the distribution of the through holes 4 is as follows:
wherein R is n The radial distance from the center of the through hole to the center of the sound wave reflecting cover plate; f is focal length, P is focal point in fig. 2, n represents the nth turn of through hole, and the maximum of through hole at the nth turn is:
further, the sum of the thicknesses of the partition board 2 and the acoustic wave reflecting cover board 3 is:
wherein,
d is the thickness of the baffle plate 2, t is the thickness of the acoustic wave reflecting cover plate 3, k is an integer, and lambda is the wavelength of the selected acoustic wave in the water. Here k=0, 1,2,3,..is an arbitrarily large integer. The thickness of the partition plate 2 is 2-6 times that of the acoustic wave reflecting cover plate 3.
The acoustic screen provided by the invention can focus waves with the wavelength lambda of normal incidence to a focus, and acoustic waves with other wavelengths and from other directions on the focus can not be concentrated, so that the acoustic screen is weak. The active sonar echo can be well detected by placing the sonar at the sound wave focus of the sound screen.
Further, the shape and size of the acoustic wave reflecting bottom plate 1, the partition plate 2 and the acoustic wave reflecting cover plate 3 are adapted, and the shape provided in this embodiment is circular, but the shape is not limited by the present invention.
Further, the acoustic wave reflecting base plate 1 and the acoustic wave reflecting cover plate 3 are any good acoustic wave reflecting material, including but not limited to a smooth surface ceramic plate or copper plate.
Further, the separator 2 and the film 5 include, but are not limited to, urethane rubber.
As shown in fig. 3, the invention provides a preparation method of a total reflection acoustic screen, which is characterized by comprising the following steps:
(1) Selecting materials, namely selecting an acoustic wave reflecting bottom plate 1, a partition plate 2 and an acoustic wave reflecting cover plate 3, wherein the acoustic wave reflecting bottom plate 1 and the acoustic wave reflecting cover plate 3 are porcelain plates or copper plates with smooth surfaces, and the partition plate 2 is made of a sound-damping material;
(2) Firstly, bonding a baffle plate 2 and a sound wave reflecting cover plate 3 into a whole, and then punching a through hole;
(3) After punching, bonding the sound wave reflecting bottom plate 1, and bonding a thin layer of sound-damping material in the hole of the sound wave reflecting cover plate 3;
(4) And (3) packaging and fixing the outer ring of the integral structure bonded in the step (3) by adding a frame, and then using the product.
The total reflection acoustic screen provided by the invention can be applied to sonar noise reduction and filtering, and is used for selecting direction and frequency of sound waves and eliminating noise. Any method for selecting sound wave direction, frequency and noise from this method belongs to the application of the invention.
Through the acoustic screen filtering provided by the invention, the backward scattered wave of the active sonar can be well subjected to noise elimination, so that a smaller target can be detected further, and the target can be positioned more accurately. The sound sieve provided by the invention has the advantages of simple structure, portability and low cost, can obviously improve the detection capability of the active sonar, and has application and industrial market prospects.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. The total reflection acoustic screen is characterized by sequentially comprising an acoustic wave reflection bottom plate (1), a partition plate (2) and an acoustic wave reflection cover plate (3) from bottom to top, wherein a plurality of circular through holes (4) which are distributed in an annular shape are formed in the whole body of the partition plate (2) and the acoustic wave reflection cover plate (3), the acoustic wave reflection bottom plate (1) is adhered to the partition plate (2), and a film (5) is adhered to the inner side wall of the through hole (4); wherein, baffle (2) and film (5) are noise elimination material, the distribution of through-hole (4) is:
wherein R is n The radial distance from the center of the through hole to the center of the sound wave reflecting cover plate; f is the focal length of the system; n represents the nth turn of through holes, and the maximum number of through holes in the nth turn is:
2. a total reflection acoustic screen according to claim 1, characterized in that the sum of the thicknesses of the baffle (2) and the acoustic wave reflecting cover plate (3) is:
wherein,
further, d is the thickness of the partition plate (2), t is the thickness of the sound wave reflecting cover plate (3), k is an integer, and lambda is the wavelength of the selected sound wave in water.
3. A total reflection acoustic screen as claimed in claim 1, wherein the shape and size of the acoustic reflection bottom plate (1), the partition plate (2) and the acoustic reflection cover plate (3) are all round.
4. A totally reflecting acoustic screen according to claim 1, characterized in that the acoustic reflecting bottom plate (1) and the acoustic reflecting cover plate (3) are ceramic plates or copper plates with smooth surfaces.
5. A totally reflecting acoustic screen according to claim 1, characterized in that the separator (2) and the membrane (5) are polyurethane rubber.
6. The preparation method of the total reflection acoustic screen is characterized by comprising the following steps of:
selecting materials, namely selecting an acoustic wave reflecting bottom plate (1), a partition plate (2) and an acoustic wave reflecting cover plate (3), wherein the acoustic wave reflecting bottom plate (1) and the acoustic wave reflecting cover plate (3) are porcelain plates or copper plates with smooth surfaces, and the partition plate (2) is made of a sound eliminating material;
(2) Firstly, bonding a baffle plate (2) and a sound wave reflecting cover plate (3) into a whole, and then punching a through hole;
(3) After punching is completed, the sound wave reflecting base plate (1) is bonded, and a thin layer of sound-absorbing material is bonded in the hole of the sound wave reflecting cover plate (3);
(4) And (3) packaging and fixing the outer ring of the integral structure bonded in the step (3) by adding a frame, and then using the product.
7. A total reflection acoustic screen as claimed in claim 1, applied to sonar noise reduction filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311844977.7A CN117805793A (en) | 2023-12-29 | 2023-12-29 | Total reflection acoustic screen and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311844977.7A CN117805793A (en) | 2023-12-29 | 2023-12-29 | Total reflection acoustic screen and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117805793A true CN117805793A (en) | 2024-04-02 |
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ID=90421647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311844977.7A Pending CN117805793A (en) | 2023-12-29 | 2023-12-29 | Total reflection acoustic screen and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117805793A (en) |
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2023
- 2023-12-29 CN CN202311844977.7A patent/CN117805793A/en active Pending
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