阅读说明：本技术 一种改善宽波束发射换能器指向性的方法和换能器 (Method for improving directivity of wide-beam transmitting transducer and transducer ) 是由 黄水兵 李勤博 王洪亮 于 2019-10-30 设计创作，主要内容包括：本申请涉及一种改善宽波束发射换能器指向性的方法和换能器,属于换能器技术领域,包括：将基元排列装配成垂直方向上分层的N个弧形基元层模块,N为大于1的整数,每个弧形基元层模块中包括多个弧形排列的基元；将所述N个弧形基元层模块中相邻的弧形基元层模块中的相邻基元成角度排列。解决了现有方案中换能器的指向性起伏较大,波束内有效声源级低以及远场声照射能量不均匀的问题；达到了可以改善宽波束发射换能器指向性以及远场辐射能量的不均匀性,提高波束内有效声源级的效果。(The application relates to a method for improving directivity of a wide wave beam transmitting transducer and the transducer, which belong to the technical field of transducers and comprise the following steps: arranging and assembling the primitives into N arc-shaped primitive layer modules layered in the vertical direction, wherein N is an integer greater than 1, and each arc-shaped primitive layer module comprises a plurality of primitives arranged in an arc shape; and arranging adjacent elements in adjacent arc-shaped element layer modules in the N arc-shaped element layer modules at an angle. The problems that the directivity fluctuation of the transducer is large, the effective sound source level in a wave beam is low and the far-field sound irradiation energy is not uniform in the existing scheme are solved; the effects of improving the directivity of the wide-beam transmitting transducer and the nonuniformity of far-field radiation energy and improving the effective sound source level in the beam are achieved.)

1. A method of improving directivity of a wide beam transmitting transducer, the method comprising:

arranging and assembling the primitives into N arc-shaped primitive layer modules layered in the vertical direction, wherein N is an integer greater than 1, and each arc-shaped primitive layer module comprises a plurality of primitives arranged in an arc shape;

and arranging adjacent elements in adjacent arc-shaped element layer modules in the N arc-shaped element layer modules at an angle.

2. The method of claim 1, wherein an angle between adjacent primitives of adjacent arc-shaped primitive layer modules is 1/n of an angle between two adjacent primitives of the arc-shaped primitive layer modules, n being a positive integer.

3. The method of claim 2, wherein n is no greater than the number of primitives in an arc primitive module.

4. A transducer is characterized by comprising N arc-shaped element layer modules, wherein N is an integer greater than 1, each arc-shaped element layer module comprises a plurality of arc-shaped arranged elements, and the N arc-shaped element layer modules are arranged in a layered mode in the vertical direction; adjacent elements in adjacent ones of the N arc element layer modules are arranged at an angle.

5. The transducer of claim 4, wherein the angle between adjacent elements in adjacent arc element layer modules is 1/n of the angle between two adjacent elements in the arc element layer modules, n being a positive integer.

6. The transducer of claim 5, wherein n is no greater than the number of elements in an arc-shaped element module.

Technical Field

The application relates to a method for improving directivity of a wide-beam transmitting transducer and the transducer, and belongs to the technical field of transducers.

Background

In sonar practical application, in order to obtain a large observation range, a transmitting transducer is required to have a wider beam and a higher sound source level, so the transducer generally adopts an arc-shaped transducer. The wide beam emitting transducer may be an arc array of several elements. The transmitting transducers are usually arranged in a vertical direction in a linear array to obtain a certain vertical beam opening angle, and then the linear array is arranged in an arc array along an arc, and the structure of the transmitting transducers is shown in fig. 1. When the radiation surface of the element 1 is large in size, the arc array is actually a uniform broken line array, and the arrangement of the arc array into an array in a conventional mode can cause large directional fluctuation, reduce the effective sound source level in a wave beam and cause uneven far-field sound irradiation energy.

Disclosure of Invention

The application provides a method for improving directivity of a wide-beam transmitting transducer and the transducer, which can solve the problems that the directivity fluctuation of the transducer in the existing scheme is large, the effective sound source level in a beam is low and far-field sound irradiation energy is not uniform. The application provides the following technical scheme:

in a first aspect, there is provided a method of improving directivity of a wide beam transmitting transducer, the method comprising:

arranging and assembling the primitives into N arc-shaped primitive layer modules layered in the vertical direction, wherein N is an integer greater than 1, and each arc-shaped primitive layer module comprises a plurality of primitives arranged in an arc shape;

and arranging adjacent elements in adjacent arc-shaped element layer modules in the N arc-shaped element layer modules at an angle.

Optionally, an angle between adjacent primitives in adjacent arc-shaped primitive layer modules is 1/n of an angle between two adjacent primitives in the arc-shaped primitive layer modules, and n is a positive integer.

Optionally, the n is not greater than the number of primitives in the arc-shaped primitive module.

In a second aspect, a transducer is provided, where the transducer includes N arc-shaped element layer modules, where N is an integer greater than 1, each arc-shaped element layer module includes a plurality of arc-shaped elements, and the N arc-shaped element layer modules are arranged in layers in a vertical direction; adjacent elements in adjacent ones of the N arc element layer modules are arranged at an angle.

Optionally, an angle between adjacent primitives in adjacent arc-shaped primitive layer modules is 1/n of an angle between two adjacent primitives in the arc-shaped primitive layer modules, and n is a positive integer.

Optionally, the n is not greater than the number of primitives in the arc-shaped primitive module.

The beneficial effect of this application lies in:

arranging and assembling the primitives into N arc-shaped primitive layer modules layered in the vertical direction, wherein N is an integer greater than 1, and each arc-shaped primitive layer module comprises a plurality of arc-shaped arranged primitives; and arranging adjacent elements in adjacent arc-shaped element layer modules in the N arc-shaped element layer modules at an angle. The problems that the directivity fluctuation of the transducer is large, the effective sound source level in a wave beam is low and the far-field sound irradiation energy is not uniform in the existing scheme are solved; the effects of improving the directivity of the wide-beam transmitting transducer and the nonuniformity of far-field radiation energy and improving the effective sound source level in the beam are achieved.

The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clear and clear, and to implement the technical solutions according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a transducer in a prior art arrangement;

fig. 2 is a flow chart of a method of improving the directivity of a wide beam transmitting transducer according to the present invention;

FIG. 3 is a schematic diagram of a transducer according to the present invention;

fig. 4 is an array pointing diagram of a transducer in accordance with the present invention.

Detailed Description

The following detailed description of embodiments of the present application will be described in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

Referring to fig. 2, a flow chart of a method for improving directivity of a wide beam transmitting transducer according to an embodiment of the present application is shown, as shown in fig. 2, the method includes:

step 201, arranging and assembling the elements into N arc element layer modules layered in the vertical direction, wherein N is an integer greater than 1, and each arc element layer module comprises a plurality of arc-arranged elements;

in practical implementation, the mode that the transmitting transducers are firstly arranged in a linear array in the vertical direction and then arranged in an arc array along an arc can be changed into N arc element layer modules layered in the vertical direction, wherein N is an integer greater than 1.

The included angle between two adjacent primitives in the arc-shaped primitive layer module can be set according to requirements, which is not limited in this embodiment.

Step 202, arranging adjacent elements in adjacent arc-shaped element layer modules in the N arc-shaped element layer modules at an angle.

The angle between adjacent elements in the adjacent arc element layer modules is 1/n of the angle between two adjacent elements in the arc element layer modules, and n is a positive integer. The n is not greater than the number of primitives in the arc primitive module.

Referring to fig. 3, a schematic diagram of an arc array in a transducer is shown.

The angular arrangement of adjacent elements in adjacent arc element layer modules reduces the directional fluctuation of the array of transducers, as shown with reference to fig. 4 (where the left figure is a directional diagram in the prior art and the right figure is a directional diagram in the present application).

Arranging and assembling the primitives into N arc-shaped primitive layer modules layered in the vertical direction, wherein N is an integer greater than 1, and each arc-shaped primitive layer module comprises a plurality of arc-shaped arranged primitives; and arranging adjacent elements in adjacent arc-shaped element layer modules in the N arc-shaped element layer modules at an angle. The problems that the directivity fluctuation of the transducer is large, the effective sound source level in a wave beam is low and the far-field sound irradiation energy is not uniform in the existing scheme are solved; the effects of improving the directivity of the wide-beam transmitting transducer and the nonuniformity of far-field radiation energy and improving the effective sound source level in the beam are achieved.

The embodiment of the invention also discloses a transducer, which comprises N arc-shaped element layer modules, wherein N is an integer larger than 1, each arc-shaped element layer module comprises a plurality of arc-shaped arranged elements, and the N arc-shaped element layer modules are arranged in a layered mode in the vertical direction; adjacent elements in adjacent ones of the N arc element layer modules are arranged at an angle.

The angle between adjacent elements in the adjacent arc element layer modules is 1/n of the angle between two adjacent elements in the arc element layer modules, and n is a positive integer. The n is not greater than the number of primitives in the arc primitive module.

Arranging and assembling the primitives into N arc-shaped primitive layer modules layered in the vertical direction, wherein N is an integer greater than 1, and each arc-shaped primitive layer module comprises a plurality of arc-shaped arranged primitives; and arranging adjacent elements in adjacent arc-shaped element layer modules in the N arc-shaped element layer modules at an angle. The problems that the directivity fluctuation of the transducer is large, the effective sound source level in a wave beam is low and the far-field sound irradiation energy is not uniform in the existing scheme are solved; the effects of improving the directivity of the wide-beam transmitting transducer and the nonuniformity of far-field radiation energy and improving the effective sound source level in the beam are achieved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.