CN117889946A - Design of novel miniaturized low-frequency composite three-dimensional co-vibration vector hydrophone - Google Patents
Design of novel miniaturized low-frequency composite three-dimensional co-vibration vector hydrophone Download PDFInfo
- Publication number
- CN117889946A CN117889946A CN202211299107.1A CN202211299107A CN117889946A CN 117889946 A CN117889946 A CN 117889946A CN 202211299107 A CN202211299107 A CN 202211299107A CN 117889946 A CN117889946 A CN 117889946A
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- Prior art keywords
- vector
- hydrophone
- transducer
- dimensional
- scalar
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- 238000013461 design Methods 0.000 title claims abstract description 6
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- 239000007769 metal material Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 claims 1
- 239000012780 transparent material Substances 0.000 claims 1
- 239000012790 adhesive layer Substances 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000003491 array Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 4
- 239000004696 Poly ether ether ketone Substances 0.000 description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 3
- 229920002530 polyetherether ketone Polymers 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
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- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H5/00—Measuring propagation velocity of ultrasonic, sonic or infrasonic waves, e.g. of pressure waves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H15/00—Measuring mechanical or acoustic impedance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/02—Housings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Acoustics & Sound (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention provides a design of a novel miniaturized low-frequency composite three-dimensional co-vibration vector hydrophone, which comprises a central mass block, a vector channel transducer unit, a universal frame, a screw cap, a scalar transducer unit, a supporting structure and a packaging adhesive layer. The vector channel is directly formed by adopting the common mass block and the piezoelectric ceramic, and the miniaturized low-frequency composite three-dimensional co-vibration vector hydrophone is designed, has the advantages of compact structure, small size, low self-noise, low processing cost and the like, and is suitable for the fields of sonar buoy systems, towing arrays, low-noise measurement and the like.
Description
Technical Field
The invention relates to the field of hydrophones, in particular to a small-size, low-frequency and low-noise composite three-dimensional co-vibration vector hydrophone.
Background
The vector hydrophone is used as a novel underwater acoustic transducer, can provide particle velocity information of an underwater sound field, and has excellent low-frequency cosine directivity so that the vector hydrophone can obtain higher gain under a small aperture. The commonly used vector hydrophones mainly comprise a differential pressure type vector hydrophone and a synchronous vibration type vector hydrophone. The pressure difference type vector hydrophone is designed based on the traditional sound pressure hydrophone structure, has a simple working principle and a mature structure, can be rigidly connected in the application process without considering the influence of a suspension mode, but has a narrow general working frequency band, low-frequency sensitivity and low signal-to-noise ratio under weak signals. Limited in practical application by its size, operating frequency band, directivity, etc. The co-vibrating vector hydrophone is generally characterized in that a sensor sensitive to vibration signals such as an accelerometer or a speedometer is placed in a rigid sphere, a cylinder and other geometric bodies, the rigid bodies and fluid medium particles synchronously vibrate under the action of sound waves, and vibration information of corresponding sound particles is picked up by the vibration sensor inside the rigid bodies. The vector hydrophone not only can directly acquire vibration information of water particles in an underwater sound field, but also has higher low-frequency sensitivity, small fluctuation of sensitivity frequency response in a working frequency range, good symmetry of a directivity diagram, high resolution and higher accuracy and reliability in measuring underwater sound information. However, the low-frequency same-vibration type vector hydrophone is limited by the performance of the sensor, and is large in size and high in self-noise.
Disclosure of Invention
Based on the problems of large size and high self-noise existing in the current low-frequency co-vibration vector hydrophone, the patent directly adopts a common mass block and piezoelectric ceramics to form a vector channel, and designs a miniaturized low-frequency composite three-dimensional co-vibration vector hydrophone.
The invention aims at completing the technical scheme that the invention provides a miniaturized low-frequency complex resonant vector hydrophone system, which mainly comprises a central mass block, a vector channel transducer unit, a universal frame, a screw cap, a scalar transducer unit, a supporting structure and a packaging adhesive layer.
The central mass may be a sphere made of a dense metallic material.
The vector channel transducer unit may be a curved disc transducer.
The universal frame may be a cube frame made of a metallic or rigid non-metallic material.
The screw cap may be made of a metallic or rigid non-metallic material with a screw structure for mating installation with a universal frame.
The scalar transducer unit may be composed of piezoelectric ceramics.
The support structure is a threaded rod for positioning the universal frame in the center of the hydrophone and may be made of metallic or rigid non-metallic material.
The encapsulation glue layer may be an acoustically transparent potting material.
In the above technical solution, the metal material with high density may be preferably stainless steel, brass, copper tungsten alloy, or the like.
In the above technical solution, preferably, the bending disc transducer may be a double-disc or triple-disc piezoelectric transducer formed by piezoelectric ceramics and metal sheets.
In the above technical solution, the metal or rigid nonmetallic material may be preferably an aluminum alloy, PEEK, PVC, ABS, or the like.
In the above technical solution, the piezoelectric ceramic preferably includes hemispherical, plate-like, tubular, and annular piezoelectric ceramics.
In the above technical solution, preferably, the sound-transmitting material is polyether polyurethane.
The beneficial effects of the invention are as follows:
1. the invention provides a miniaturized low-frequency complex vibration type vector hydrophone system, which can solve the problems of large size and high self-noise of the traditional low-frequency complex vibration type vector hydrophone.
2. The low-frequency vector hydrophone prepared by the design mode of forming the vector channels by the common mass blocks and the piezoelectric ceramics has the advantages of compact structure, small size, low self-noise, low processing cost and the like, and meanwhile, the low-frequency vector hydrophone is easy to assemble and improves the consistency of each vector channel.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is an external view of the internal structure of the novel low-frequency co-vibrating vector hydrophone.
FIG. 3 is a schematic diagram of a generic frame structure.
Detailed Description
According to the technical scheme of the invention, a person skilled in the art can change or replace various structural modes and implementation modes without changing the true spirit of the invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.
As shown in fig. 1, the present invention provides a miniaturized low frequency complex resonant vector hydrophone system comprising a central mass 1, vector channel transducer units 2, 3, a universal frame 4, a screw cap 5, a scalar transducer unit 6, a support structure 7 and an encapsulation glue layer 8.
The central mass block 1 can be a sphere made of copper tungsten alloy, copper, lead and other metal materials with high density.
The vector channel transducer unit is a bending vibration disc formed by bonding piezoelectric ceramics 2 and metal sheets 3 into a whole, and can be a double-disc or three-lamination piezoelectric transducer formed by bonding a piezoelectric ceramic sheet with phi 16mm multiplied by 1mm and a thin copper sheet with phi 20mm multiplied by 1 mm.
The universal frame is a hollow cubic frame made of PEEK by machining, the size is 30mm multiplied by 30mm, threaded holes matched with the threaded caps 5 are formed in each six faces of the frame, 8 corners are flattened, and M5 threaded holes are formed in the center of a triangular plane and are used for being matched with the supporting structure 7.
The screw cap 5 is a ring with external screw thread made of PEEK machining.
The central mass block 1 is placed in the three-dimensional frame, the vector unit is adhered to the threaded end of the threaded cap 5, and the whole body is screwed into the central threaded holes of the six faces of the three-dimensional frame.
The screw-in depth of the screw cap 5 was adjusted while monitoring the uniformity of the output impedance of each vector unit on the six faces with an impedance analyzer.
A sound pressure unit made of ceramic hemispheres with the diameter of 20mm-26mm is adhered to the upper end of the threaded cap 5.
The support structure 7, M5 threaded rod is screwed into the eight corner threaded holes.
And encapsulating the structural units by using sound-transmitting polyurethane to finish the preparation of the vector hydrophone.
The technical scope of the present application is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present application, and these changes and modifications should all fall within the protection scope of the present application.
Claims (6)
1. The design of a novel miniaturized low-frequency composite three-dimensional co-vibration vector hydrophone is characterized in that the vector hydrophone is spherical, and the inside of the vector hydrophone comprises: the vector transducer and the scalar transducer are externally encapsulated by sound-transmitting materials.
2. The composite three-dimensional co-vibrating vector hydrophone of claim 1, wherein the vector transducer is comprised of a center mass, a vector channel transducer unit, a universal frame, and a threaded cap.
The central mass (1) can be in the shape of a sphere or a cube, and is made of heavy metal materials.
The vector channel transducer unit is formed by bonding piezoelectric ceramics (2) and metal sheets (3). The vector channel transducer unit may be a bi-laminate, tri-laminate transducer or a longitudinal vibration transducer. The piezoelectric ceramic (2) can be in a disc shape or a ring shape.
The universal frame (4) is of a cubic frame structure, the center of the universal frame is of a through structure, each side face of the cube opposite to the center of the cube is provided with a threaded through hole, each vertex angle of the cube is a threaded hole pointing to the center of the cube, and the end face of the vertex angle is perpendicular to a diagonal line connected with the opposite vertex angle.
The screw cap (5) is adhered to the edge of the vector channel transducer unit and is mounted on the screw holes on each side of the universal frame (4).
3. The three-dimensional co-vibrating vector hydrophone according to claim 2, characterized in that the pre-stressing of the screw-threaded vector channel transducer (3) and the central mass (1) is adjusted by the cooperation of the screw cap (5) and the universal frame (4), thereby ensuring the signal consistency between the vector channels.
4. The composite homovibrating three-dimensional vector hydrophone according to claim 1, characterized in that the scalar transducer consists of six-directional hemispherical or disc-shaped piezoelectric ceramics (6) bonded on the outer side of the screw cap (5) in each direction. The six scalar transducer signals are averaged to provide a scalar signal for the entire hydrophone.
5. The three-dimensional co-vibrating vector hydrophone according to claim 1, wherein the connecting rod (7) is a connecting rod corresponding to the vertex angle threads of the universal frame, the universal frame can be supported at the center of the whole spherical vector hydrophone, the gravity center and the centroid of the vector hydrophone are coincident, and the scalar hydrophone is uniformly distributed in the hydrophone.
6. The three-dimensional co-vibrating vector hydrophone of claim 1, wherein the exterior of the vector transducer and scalar transducer are encapsulated by an acoustically transparent material such as polyurethane. Additionally included are signal output cables and hydrophone suspensions, wherein the hydrophone suspensions are disposed on an outer skin of the hydrophone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211299107.1A CN117889946A (en) | 2022-10-14 | 2022-10-14 | Design of novel miniaturized low-frequency composite three-dimensional co-vibration vector hydrophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211299107.1A CN117889946A (en) | 2022-10-14 | 2022-10-14 | Design of novel miniaturized low-frequency composite three-dimensional co-vibration vector hydrophone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117889946A true CN117889946A (en) | 2024-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211299107.1A Pending CN117889946A (en) | 2022-10-14 | 2022-10-14 | Design of novel miniaturized low-frequency composite three-dimensional co-vibration vector hydrophone |
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| CN (1) | CN117889946A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118759450A (en) * | 2024-09-09 | 2024-10-11 | 杭州电子科技大学 | Sonar direction finding system and method for UUV based on non-co-point vector sensing |
-
2022
- 2022-10-14 CN CN202211299107.1A patent/CN117889946A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118759450A (en) * | 2024-09-09 | 2024-10-11 | 杭州电子科技大学 | Sonar direction finding system and method for UUV based on non-co-point vector sensing |
| CN118759450B (en) * | 2024-09-09 | 2024-11-08 | 杭州电子科技大学 | Sonar direction finding system and method for UUV based on non-co-point vector sensing |
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