CN220367416U - Sonar device - Google Patents

Abstract

The utility model provides a sonar device, includes transducer, reflection cavity and connecting rod, the transducer with the reflection cavity passes through connecting rod fixed connection, the reflection cavity has the reflection concave surface, the transducer sets up the place ahead of reflection concave surface, the sound wave that the transducer sent is through the reflection of reflection concave surface back outwards launches, and the sound wave that comes from the outside is through the reflection of reflection concave surface back is received by the transducer. The utility model simplifies the system structure of the sonar device, and does not need electronic control; the propagation and reflection paths of the sound wave are directly changed through the reflection cavity, so that the adjustment of the beam shape is realized without a complex phase alignment and control circuit; the sonar device can realize smaller volume, thereby being better suitable for different application environments and space limitations. The reflecting cavity is used as an acoustic wave reflector and is insensitive to temperature, water quality and other changes, and the stability is good. The device can be widely applied to sonar systems, acoustic measurement, acoustic imaging and other purposes.

Description

Sonar device

Technical Field

The utility model relates to a sonar device.

Background

With the development of information technology, high-speed reliable sonar detection is an indispensable part of underwater unmanned cluster cooperation and networking. Transducer applied to sonar sound wave transmitting device, and various types and functions: for the transducer with concentrated energy and small beam coverage, the method can realize target positioning and tracking, underwater imaging, underwater ranging, underwater communication, underwater navigation and the like; for the energy converter with large beam coverage, the tasks of marine survey, underwater search and rescue, marine ecology detection and the like can be realized.

Therefore, by adjusting the beam opening angle, the directivity and the energy distribution of the transducer, the sonar detection and positioning capability with higher accuracy, high efficiency and strong adaptability can be realized, the performance of a sonar system is optimized, the accuracy of target positioning and tracking is improved, and the optimal signal propagation effect is obtained in different underwater environments.

Sound source array modulation is a common sonar beam shape modulation method, but the method requires a complex electronic control system to control parameters such as excitation time sequence, phase and amplitude of each transmitting element, i.e. more equipment, circuits and software support is needed in the design and implementation process. The emitting elements in the sound source array need to be accurately phase-regulated, and have higher phase alignment requirements so as to ensure the accuracy and stability of the beam shape. The adjustment of the acoustic source array may be sensitive to environmental factors such as temperature variations, water quality effects, etc.

It should be noted that the information disclosed in the above background section is only for understanding the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The utility model aims to overcome the defects of the background technology and provide a sonar device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a sonar device, includes transducer, reflection cavity and connecting rod, the transducer with the reflection cavity passes through connecting rod fixed connection, the reflection cavity has the reflection concave surface, the transducer sets up the place ahead of reflection concave surface, the sound wave that the transducer sent is through the reflection of reflection concave surface back outwards launches, and the sound wave that comes from the outside is through the reflection of reflection concave surface back is received by the transducer.

Further:

the reflective concave surface is coated with a coating for modulating the beam of sound waves.

The reflective cavity is filled with air, and a sound absorbing material or an acoustic damping material is arranged in the reflective cavity.

The reflective concave surface is in a parabolic configuration.

The transducer is mounted at the focal point of the concave reflective surface.

The concave reflective surface is configured to convert the acoustic wave beam emitted by the transducer into a parallel beam for outward emission.

The reflecting cavity is in a circular pot shape and is provided with an outer arc-shaped wall, an inner arc-shaped wall and an inner cavity formed between the outer arc-shaped wall and the inner arc-shaped wall, and the reflecting concave surface is formed on the inner arc-shaped wall.

The outer arc wall is parallel to the inner arc wall, and the lower edge of the outer arc wall is connected with the lower edge of the inner arc wall through an annular plane.

The transducer is in a shape of a cake, and is connected with the reflecting cavity through three connecting rods which are spaced 120 degrees apart from each other.

The utility model has the following beneficial effects:

the sonar device is provided with the reflecting cavity fixedly connected with the transducer through the connecting rod, the reflecting cavity is provided with the reflecting concave surface, sound waves sent by the transducer are reflected by the reflecting concave surface and then are emitted outwards, sound waves transmitted from the outside are received by the transducer after being reflected by the reflecting concave surface, the wave beam characteristics of the sound waves can be changed by introducing the reflecting cavity as a sound wave reflecting body, for example, the sound wave beam of a spherical point sound source can be converted into parallel sound waves to be sent out through the parabolic reflecting cavity, the cavity has good sound wave reflecting characteristics, and a coating can be coated on the reflecting surface of the cavity to realize wave beam adjustment of the sound waves, the sound wave reflecting body comprises the increase of the sound wave reflectivity and the like, and the sound wave reflecting body adopts a cavity structure and also has good structural strength and stability. Compared with the design adopting sound source array adjustment, the utility model simplifies the system structure of the sonar device without electronic control; the propagation and reflection paths of the sound wave are directly changed through the reflection cavity, so that the adjustment of the beam shape is realized, and a complex phase alignment and control circuit is not needed; the sonar device can realize smaller volume, thereby being better suitable for different application environments and space limitations. The reflecting cavity is used as an acoustic wave reflector, is insensitive to temperature, water quality and other changes, has good stability and can adapt to different underwater environmental conditions. Due to the characteristics, the safety, the accuracy and the efficiency of the operation of the sonar device can be improved. The device can be widely applied to the fields of sonar systems, acoustic measurement, acoustic imaging and the like.

Other advantages of embodiments of the present utility model are further described below.

Drawings

FIG. 1 is an elevational cross-sectional view of a sonar device according to an embodiment of the present utility model.

FIG. 2 is a front view of a sonar device of an embodiment of the present utility model.

Fig. 3 is a bottom view of a sonar device according to an embodiment of the present utility model.

FIG. 4 is an oblique view of a sonar device of an embodiment of the present utility model.

Detailed Description

The following describes embodiments of the present utility model in detail. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the utility model or its applications.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for both a fixing action and a coupling or communication action.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing embodiments of the utility model and to simplify the description by referring to the figures, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 4, an embodiment of the present utility model provides a sonar device, including a transducer 2, a reflective cavity 1 and a connecting rod 3, where the transducer 2 is fixedly connected with the reflective cavity 1 through the connecting rod 3, the reflective cavity 1 has a reflective concave 10, the transducer 2 is disposed in front of the reflective concave 10, and sound waves emitted by the transducer 2 are reflected by the reflective concave 10 and then emitted outwards, and sound waves transmitted from the outside are received by the transducer 2 after being reflected by the reflective concave 10.

In the prior art, a device adopting sound source array adjustment needs a complex control system and higher phase regulation requirements, and the sonar device adopting the technical scheme can directly change the propagation and reflection paths of sound waves by introducing the reflecting cavity 1 as a sound wave reflector, so that the adjustment of the beam shape is realized, and complex phase alignment and control circuits are not needed. Compared with a sound source array, the reflection cavity 1 has lower requirements on space layout and installation of the adjusting beam, and solves the problem of limited equipment space. The shape and size of the reflective cavity 1 can be designed and adjusted according to practical requirements to adapt to different application environments and space constraints. The reflection cavity is stable to temperature, water quality and other changes, and can be better adapted to different underwater environment conditions.

In a preferred embodiment, the surface of the reflective concave surface 10 may be coated with a coating for adjusting the beam of the acoustic wave. For example, a coating or material that increases the acoustic reflectivity is employed.

In a preferred embodiment, the reflective cavity is filled with air, and a sound absorbing material or an acoustic damping material is provided in the reflective cavity. In the embodiment, the air is filled in the reflecting cavity, so that good reflecting characteristics of the reflecting cavity can be maintained; after filling with air, resonance is considered, and in order to reduce resonance, sound absorption treatment is performed inside the reflective cavity or a suitable damping material (such as acoustic foam, acoustic panel, protrusion or recess, rubber, polymer, etc.) is added. By the design, resonance conditions can be reduced as much as possible under the condition of guaranteeing the efficiency of sound wave reflection.

In addition, the cavity can be filled with a material for reducing the sensitivity to temperature and water quality changes.

Referring to fig. 1-4, in a preferred embodiment, the concave reflective surface 10 is parabolic in configuration.

In a preferred embodiment, the transducer 2 is mounted at the focal point of the concave reflective surface 10.

In a preferred embodiment, the concave reflective surface 10 is configured to convert the acoustic wave beam emitted by the transducer 2 into a parallel beam for emission.

As shown in fig. 1 to 4, in a preferred embodiment, the reflective cavity 1 has a circular pot-like shape with an outer arc wall 11, an inner arc wall 12, and an inner cavity 13 formed between the outer arc wall 11 and the inner arc wall 12, and the reflective concave surface 10 is formed on the inner arc wall.

As shown in fig. 1, the outer arc wall 11 is parallel to the inner arc wall 12, and the lower edge of the outer arc wall is connected to the lower edge of the inner arc wall by an annular plane 14.

As shown in fig. 1, 3 to 4, the transducer 2 is in the shape of a circular cake, and the transducer 2 is connected to the reflective cavity 1 through three connection rods 3 spaced 120 degrees apart from each other.

Specific embodiments of the present utility model are described further below.

In some embodiments, a sonar device containing an acoustic wave reflector designed for a particular reflective cavity 1 includes a transducer 2, reflective cavity 1, and connecting rod 3. The shape and characteristics of the acoustic wave beam are changed by reflecting the acoustic wave by the reflective cavity 1 as an acoustic wave reflector. Wherein, the reflecting cavity 1 and the transducer 2 are fixedly connected through a connecting rod 3. As an acoustic wave reflector, the reflective cavity 1 is made of an acoustic wave reflective material and has sufficient structural strength and stability. On the basis of the beam characteristics of the transducer 2, the reflection and focusing of the sound wave can be realized by reasonably designing the geometric shape and the material of the reflecting cavity 1, so that the beam characteristics of the sound wave can be adjusted.

In an exemplary embodiment, a parabolic reflective cavity is used as an example, through which spherical sound waves can be converted into parallel sound waves, thereby achieving beam characteristic adjustment.

The parabolic reflective cavity 1 shown in fig. 1 has good sound wave reflection characteristics, in order to increase the sound wave reflectivity, a coating can be coated on the reflective surface of the parabolic cavity to realize the beam adjustment of sound waves, air can be filled in the reflective cavity to maintain the good reflection characteristics of the reflective cavity, and a sound absorbing material or an acoustic damping material is arranged in the reflective cavity to reduce resonance. The cavity has sufficient structural strength and stability. The transducer 2 of the sonar device is mounted at the focus of the reflective concave surface 10 of the parabolic cavity. The connecting rod 3 serves as a mechanical component connecting the cavity and the transducer 2, ensuring a fixed connection between them. The connecting rod 3 has sufficient strength and rigidity to keep the relative position of the sonar and the cavity stable.

After the sonar device is lowered to the corresponding depth under water, the sonar is powered by the waterproof cable, the parabolic cavity converts the sound wave beam into the parallel beam, and most of the parallel beam can be emitted through the sound wave reflecting surface, so that the tasks of sonar imaging, sonar ranging, underwater acoustic communication and the like are performed.

In summary, the utility model simplifies the system structure of the sonar device without electronic control; the propagation and reflection paths of the sound wave are directly changed through the reflection cavity, so that the adjustment of the beam shape is realized without a complex phase alignment and control circuit; the sonar device can realize smaller volume, thereby being better suitable for different application environments and space limitations. The reflecting cavity is used as an acoustic wave reflector and is insensitive to temperature, water quality and other changes, and the stability is good. The device can be widely applied to sonar systems, acoustic measurement, acoustic imaging and other purposes.

The background section of the present utility model may contain background information about the problems or environments of the present utility model and is not necessarily descriptive of the prior art. Accordingly, inclusion in the background section is not an admission of prior art by the applicant.

The foregoing is a further detailed description of the utility model in connection with specific/preferred embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that several alternatives or modifications can be made to the described embodiments without departing from the spirit of the utility model, and these alternatives or modifications should be considered to be within the scope of the utility model. In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "preferred embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Those skilled in the art may combine and combine the features of the different embodiments or examples described in this specification and of the different embodiments or examples without contradiction. Although embodiments of the present utility model and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the utility model as defined by the appended claims.

Claims (9)

1. The sonar device is characterized by comprising a transducer, a reflecting cavity and a connecting rod, wherein the transducer is fixedly connected with the reflecting cavity through the connecting rod, the reflecting cavity is provided with a reflecting concave surface, the transducer is arranged in front of the reflecting concave surface, sound waves emitted by the transducer are reflected by the reflecting concave surface and then emitted outwards, and sound waves transmitted from the outside are received by the transducer after being reflected by the reflecting concave surface.

2. A sonar device as defined in claim 1, wherein said reflective concave surface is coated with a coating for modulating the beam of sound waves.

3. A sonar device as defined in claim 1, wherein said reflective cavity is filled with air and sound absorbing or acoustic damping material is provided in said reflective cavity.

4. A sonar device as defined in claim 1, wherein said concave reflective surface is a parabolic configuration.

5. A sonar device as defined in claim 1, wherein said transducer is mounted at the focal point of said concave reflective surface.

6. A sonar device as defined in claim 1, wherein said concave reflective surface is configured to convert a beam of sound waves emitted by said transducer into a parallel beam for emission.

7. A sonar device as claimed in any of claims 1 to 6, wherein said reflective cavity is of circular pot shape having an outer arcuate wall, an inner arcuate wall and an inner cavity formed between said outer arcuate wall and said inner arcuate wall, said reflective concave surface being formed on said inner arcuate wall.

8. A sonar device as defined in claim 7, wherein said outer arc wall is parallel to said inner arc wall, and a lower edge of said outer arc wall is connected to a lower edge of said inner arc wall by an annular plane.

9. A sonar device as claimed in any of claims 1 to 6, wherein said transducer is in the form of a pie, said transducer being connected to said reflective cavity by three said connecting bars spaced 120 degrees apart from each other.