CN114025281A - Full-space scanning type circular ring transducer structure - Google Patents
Full-space scanning type circular ring transducer structure Download PDFInfo
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- CN114025281A CN114025281A CN202111122776.7A CN202111122776A CN114025281A CN 114025281 A CN114025281 A CN 114025281A CN 202111122776 A CN202111122776 A CN 202111122776A CN 114025281 A CN114025281 A CN 114025281A
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- rotating structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention provides a full-space scanning type circular ring transducer structure which mainly comprises a vertical rotating structure, a horizontal rotating structure and a circular ring transducer, wherein the circular ring transducer is used for carrying out sound radiation, and the vertical rotating structure and the horizontal rotating structure are used for carrying out full-space scanning; the horizontal rotating structure is arranged on the support adapter plate and is used for driving the support adapter plate to rotate horizontally; the support keysets and two vertical support board fixed connection are provided with braced frame between two vertical support board, fixedly connected with ring transducer on the braced frame, and vertical rotating structure fixes and drives braced frame rotatory in vertical support board to it is rotatory to drive the ring transducer. The invention has the beneficial effects that: utilize the low frequency directive property characteristic of ring transducer from the area, adopt the controllable structure of scanning of total space, realize: the transducer works at high sound source level under small size and light weight; a controllable directional radiation mode is adopted to weaken the influence of reverberation; and the sound radiation is oriented, so that the receiving and positioning difficulty is reduced.
Description
Technical Field
The invention relates to the field of transducers, in particular to a full-space scanning type circular ring transducer structure.
Background
A circular ring transducer is one of the most common transducers in underwater acoustic transducers. In the case of high-power emission, the ceramic is generally formed by splicing a plurality of pieces of ceramics, and the structural form is shown in fig. 1. The circular ring transducer has the advantages of mature process, large power capacity, strong hydrostatic pressure resistance, no radial directivity and the like. The method is widely applied to multiple fields of underwater sound detection, communication and the like.
The annular transducer can be divided into two directions, namely an axial direction and a radial direction. The radial response fluctuation is small, and omnidirectional radiation can be realized; axial sound energy is axial in-phase superposition, the response is high, but the directivity fluctuation is large, and the omnidirectional work is difficult to realize. In practice, to obtain a good horizontal directivity, the annular transducer usually employs radial radiation. This mode of operation also brings the following problems while achieving horizontal nondirectional performance:
(1) a great deal of sound energy is wasted in the vertical direction, and in order to obtain higher sound source level, a plurality of transducers are required to be arranged, so that great waste is caused;
(2) the sound energy in the vertical direction radiates to the sea surface and the seabed, and the huge reverberation seriously influences the detection performance of the sonar system;
(3) the horizontal non-directional radiation mode makes the target positioning difficult, and a long tow line receiving array is often needed in actual work. In order to port and starboard respectively, a double-tow line receiving array is also required.
The sound field in the axial direction of the annular transducer is formed by the same-phase superposition of radial vibration. When the height of the transducer is small, the radial vibration is superposed in the same phase in the axial direction, and the axial sound source level is far larger than the radial sound source level. For example, a circular ring transducer operating at a frequency of 1.5kHz, the transducer diameter is about 700mm, the transducer height is about 200mm, and the axial sound source level at resonance is about 14dB higher than the radial. As can be seen from the symmetry, the plane perpendicular to the axial direction is non-directional; the directional fluctuation is large in the plane perpendicular to the radial direction, as shown in fig. 2.
As shown in fig. 3, in the directivity perpendicular to the radial direction, the 90 degree direction is the axial direction, and it can be seen that the transducer-3 dB open angle is about 60 degrees; the directional fluctuation perpendicular to the axial direction is less than 0.5dB, and is approximate to nondirective radiation.
The radial response fluctuation of the annular transducer is small, and omnidirectional radiation can be realized; axial sound energy is axial in-phase superposition, the response is high, but the directivity fluctuation is large, and the omnidirectional work is difficult to realize. In engineering applications, to obtain horizontal omnidirectional sound radiation, the tiled ring transducers are usually placed vertically in the height direction. This arrangement makes axially larger sound source levels unavailable. To achieve higher sound source levels, multiple transducer stacks are typically deployed in an axial direction. In order to achieve the sound source level equivalent to the axial direction, the circular ring transducers with the size need to be arranged in a close manner along the axial direction by about 5 transducers, so that the size, the weight, the scale of a power supply system, the size of a power supply cable and other parameters of the whole transmitting system need to be increased in proportion.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a total-space scanning type circular ring transducer structure, which utilizes the directional characteristic of sound radiation of a single circular ring transducer and combines mechanical scanning to realize a total-space sound radiation structure with high sound source level and directivity.
The object of the present invention is achieved by the following technical means. A full-space scanning type circular ring transducer structure mainly comprises a vertical rotating structure, a horizontal rotating structure and a circular ring transducer, sound radiation is carried out through the circular ring transducer, and full-space scanning is carried out through the vertical rotating structure and the horizontal rotating structure; the horizontal rotating structure is arranged on the support adapter plate and is used for driving the support adapter plate to rotate horizontally; the support keysets and two vertical support board fixed connection are provided with braced frame between two vertical support board, fixedly connected with ring transducer on the braced frame, and vertical rotating structure fixes and drives braced frame rotatory in vertical support board to it is rotatory to drive the ring transducer.
The circular ring transducer consists of a wedge-shaped ceramic strip, a watertight epoxy layer, a sealing cover plate and an external metal circular ring, wherein the wedge-shaped ceramic strip is spliced into a circular ring structure, the sealing cover plate is arranged on the side surface of the circular ring structure, and the watertight epoxy layer and the external metal circular ring are sequentially sleeved outside the circular ring structure; when the ceramic water-tight ring works, the wedge-shaped ceramic strip vibrates in the radial direction to drive the water-tight epoxy layer and the external metal ring to radiate sound.
The vertical rotating structure consists of a horizontal connecting rod, a horizontal switching rod, a vertical rotating motor and a side baffle, and the vertical rotating motor is connected with the vertical supporting plate through a screw; the vertical rotating motor is connected with the transverse adapter rod through a pin, and the transverse adapter rod is connected with the vertical supporting plate through a bearing and keeps rotating freely; the transverse adapter rod is connected with the transverse connecting rod through a screw to form a rectangular supporting frame, and the transverse connecting rod is connected with a sealing cover plate of the circular ring transducer; during operation, the vertical rotating motor drives the supporting frame consisting of the transverse transfer rod and the transverse connecting rod, so that the circular transducer can realize rotary scanning in the vertical direction.
The horizontal rotating structure consists of a supporting base, a supporting bearing, a horizontal rotating motor, a sealing base, a sealing plate and a watertight bearing, wherein the horizontal rotating motor, the sealing base, the sealing plate and the watertight bearing form the watertight motor; the watertight motor is fixed with the support adapter plate through a screw hole on the sealing base; the support adapter plate is connected with the support base through a support bearing and keeps free rotation in the horizontal direction; the watertight motor is connected with the supporting base through a motor rotating shaft; the support adapter plate is connected with a vertical support plate in the vertical rotating structure through a screw; when the watertight motor works, the whole supporting adapter plate is driven to rotate horizontally.
The sealed shell body formed by the sealed base and the sealed plate is internally filled with castor oil.
The invention has the beneficial effects that: the invention utilizes the self-carried low-frequency directivity characteristic of the circular transducer and adopts a full-space controllable scanning structure to realize that: the transducer works at high sound source level under small size and light weight; a controllable directional radiation mode is adopted to weaken the influence of reverberation; and the sound radiation is oriented, so that the receiving and positioning difficulty is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a conventional spliced annular transducer.
Fig. 2 is a schematic diagram of the response curve of the transmission voltage of the mosaic annular transducer in the axial direction and the radial direction.
Fig. 3 is a schematic diagram of the perpendicular to radial and perpendicular to axial directivity at resonance.
Fig. 4 is a schematic structural diagram of the present invention.
Fig. 5 is a schematic diagram of the structure of the annular transducer.
Fig. 6 is a schematic sectional view taken along line a-a of fig. 5.
Fig. 7 is a front view of the vertical rotation structure.
Fig. 8 is a schematic bottom view of the vertical rotation structure.
Fig. 9 is a perspective view of a vertical rotation structure.
Fig. 10 is a front view of the horizontal rotation structure.
Fig. 11 is a schematic sectional view taken along line a-a of fig. 10.
Description of reference numerals: the device comprises a vertical rotating structure 1, a horizontal rotating structure 2, a circular ring transducer 3, a wedge-shaped ceramic strip 4, a watertight epoxy layer 5, a sealing cover plate 6, an external metal circular ring 7, a transverse connecting rod 8, a transverse adapter rod 9, a vertical supporting plate 10, a vertical rotating motor 11, a side baffle plate 12, a supporting adapter plate 13, a watertight bearing 14, a horizontal rotating motor 15, a supporting bearing 16, a supporting base 17, a sealing base 18 and a sealing plate 19.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
as shown in FIG. 4, a full-space scanning type circular ring transducer structure is composed of a vertical rotating structure 1, a horizontal rotating structure 2 and a circular ring transducer 3. The system carries out sound radiation through the annular transducer 3 and carries out full-space scanning through the vertical rotating structure 1 and the horizontal rotating structure 2. The horizontal rotating structure 2 is arranged on the support adapter plate 13 and is used for driving the support adapter plate 13 to rotate horizontally; support keysets 13 and two vertical support plate 10 fixed connection, be provided with braced frame between two vertical support plate 10, fixedly connected with ring transducer 3 on the braced frame, vertical rotating structure 1 fixes and drives braced frame rotatory on vertical support plate 10 to it is rotatory to drive ring transducer 3.
As shown in fig. 5-6, the ring transducer 3 is composed of a wedge-shaped ceramic strip 4, a watertight epoxy layer 5, a sealing cover plate 6 and an external metal ring 7, the wedge-shaped ceramic strip 4 is inlaid into a ring structure, the sealing cover plate 6 is arranged on the side surface of the ring structure, and the watertight epoxy layer 5 and the external metal ring 7 are sequentially sleeved outside the ring structure; when the transducer works, the wedge-shaped ceramic strips 4 vibrate radially to drive the watertight epoxy layer 5 and the external metal ring 7 to radiate sound. The circular ring transducer is combined with the vertical rotary structure through a rectangular mounting hole on the sealing cover plate 6.
As shown in fig. 7-9, the vertical rotation structure 1 is composed of a horizontal connecting rod 8, a horizontal transfer rod 9, a vertical rotation motor 11 and a side baffle 12, wherein the vertical rotation motor 11 is connected with a vertical supporting plate 10 through a screw; the vertical rotating motor 11 is connected with the transverse adapter rod 9 through a pin, and the transverse adapter rod 9 is connected with the vertical support plate 10 through a bearing and keeps rotating freely; the transverse adapter rod 9 is connected with the transverse connecting rod 8 through screws to form a rectangular supporting frame, and the transverse connecting rod 8 is connected with the sealing cover plate 6 of the circular ring transducer; when the vertical rotation structure works, the vertical rotation motor 11 drives the supporting frame consisting of the transverse adapter rod 9 and the transverse connecting rod 8, so that the circular transducer 3 can realize rotary scanning in the vertical direction.
As shown in fig. 10-11, the horizontal rotation structure 2 is composed of a support base 17, a support bearing 16, a horizontal rotation motor 15, a sealing base 18, a sealing plate 19 and a watertight bearing 14, wherein the horizontal rotation motor 15, the sealing base 18, the sealing plate 19 and the watertight bearing 14 constitute a watertight motor; the watertight motor is fixed with the support adapter plate 13 through a screw hole on the sealing base 18; the support adapter plate 13 is connected with a support base 17 through a support bearing 16 and keeps free rotation in the horizontal direction; the watertight motor is connected with the supporting base 17 through a motor rotating shaft; the support adapter plate 13 is connected with the vertical support plate 10 in the vertical rotating structure through screws. When the horizontal rotation motor 15 works, the supporting base 17 is fixed, and the motor drives the whole supporting adapter plate 13 to rotate horizontally. In order to ensure that the motor can normally work underwater, the sealing base 18 and the sealing plate 19 form a sealing shell, and castor oil is filled in the sealing shell.
After the full-space mechanical scanning structure is adopted, the sound source level of the transducer is improved by about 14dB compared with the traditional mode, and the detection distance is increased; the directional opening angle is about 60 degrees, so that the influence of underwater acoustic reverberation and water surface and seabed reflection on a receiving array is greatly weakened; the directional emission is more beneficial to determining the target azimuth; the ability of rotating in the horizontal and vertical directions can make the transducer radiate sound in different directions, and is suitable for the variable environment in deep sea.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (5)
1. The utility model provides a total space scanning formula ring transducer structure which characterized in that: the device mainly comprises a vertical rotating structure (1), a horizontal rotating structure (2) and a circular ring transducer (3), sound radiation is carried out through the circular ring transducer (3), and full-space scanning is carried out through the vertical rotating structure (1) and the horizontal rotating structure (2); the horizontal rotating structure (2) is arranged on the supporting adapter plate (13) and is used for driving the supporting adapter plate (13) to rotate horizontally; support keysets (13) and two vertical support board (10) fixed connection, be provided with braced frame between two vertical support board (10), fixedly connected with ring transducer (3) on the braced frame, vertical rotating structure (1) is fixed on vertical support board (10) and is driven braced frame rotatory to it is rotatory to drive ring transducer (3).
2. The full-space scanning ring transducer structure according to claim 1, wherein: the ring transducer (3) is composed of wedge-shaped ceramic strips (4), a watertight epoxy layer (5), a sealing cover plate (6) and an external metal ring (7), the wedge-shaped ceramic strips (4) are spliced into a ring structure, the sealing cover plate (6) is arranged on the side face of the ring structure, and the watertight epoxy layer (5) and the external metal ring (7) are sequentially sleeved outside the ring structure; when the device works, the wedge-shaped ceramic strips (4) vibrate in the radial direction to drive the watertight epoxy layer (5) and the external metal ring (7) to radiate sound.
3. The full-space scanning ring transducer structure according to claim 1, wherein: the vertical rotating structure (1) consists of a horizontal connecting rod (8), a horizontal switching rod (9), a vertical rotating motor (11) and a side baffle (12), and the vertical rotating motor (11) is connected with a vertical supporting plate (10) through a screw; the vertical rotating motor (11) is connected with the transverse adapter rod (9) through a pin, and the transverse adapter rod (9) is connected with the vertical supporting plate (10) through a bearing and keeps rotating freely; the transverse adapter rod (9) is connected with the transverse connecting rod (8) through screws to form a rectangular supporting frame, and the transverse connecting rod (8) is connected with a sealing cover plate (6) of the circular ring transducer; during operation, the vertical rotating motor (11) drives a supporting frame consisting of the transverse adapter rod (9) and the transverse connecting rod (8), so that the circular transducer (3) can realize rotary scanning in the vertical direction.
4. The full-space scanning ring transducer structure according to claim 1, wherein: the horizontal rotating structure (2) consists of a supporting base (17), a supporting bearing (16), a horizontal rotating motor (15), a sealing base (18), a sealing plate (19) and a watertight bearing (14), wherein the horizontal rotating motor (15), the sealing base (18), the sealing plate (19) and the watertight bearing (14) form the watertight motor; the watertight motor is fixed with the supporting adapter plate (13) through a screw hole on the sealing base (18); the support adapter plate (13) is connected with the support base (17) through a support bearing (16) and keeps free rotation in the horizontal direction; the watertight motor is connected with the supporting base (17) through a motor rotating shaft; the support adapter plate (13) is connected with a vertical support plate (10) in the vertical rotating structure through a screw; when the watertight motor works, the whole supporting adapter plate (13) is driven to rotate horizontally.
5. The full-space scanning ring transducer structure according to claim 4, wherein: the sealed shell body is composed of the sealed base (18) and the sealing plate (19), and castor oil is filled in the sealed shell body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122776.7A CN114025281A (en) | 2021-09-24 | 2021-09-24 | Full-space scanning type circular ring transducer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122776.7A CN114025281A (en) | 2021-09-24 | 2021-09-24 | Full-space scanning type circular ring transducer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114025281A true CN114025281A (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111122776.7A Pending CN114025281A (en) | 2021-09-24 | 2021-09-24 | Full-space scanning type circular ring transducer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114025281A (en) |
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2021
- 2021-09-24 CN CN202111122776.7A patent/CN114025281A/en active Pending
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