Periodic structure spliced circular ring transducer and splicing method thereof

Abstract

The invention provides a periodic structure spliced circular ring transducer and a splicing method thereof. The transducer comprises a plurality of periodic structures, the periodic structures are connected into a circular ring, and each periodic structure comprises a transition block, two piezoelectric ceramic stacks and a periodic structure shell; and each periodic structure is formed by sequentially connecting one piezoelectric ceramic stack, the transition block, the other piezoelectric ceramic stack and the periodic structure shell. The problem that development of low-frequency, high-power and small-size acoustic emission transducers is limited in multiple aspects is solved. The periodic structures are introduced and have the biggest advantage of designability, a designer can carry out optimization design on the structures according to use requirements, the periodic structures with multifunctional composite characteristics such as ultralight and amplitude amplification can be obtained, the periodic structures and the transducer are combined, and the transmitting transducer which is low in frequency, small in size, light in weight and high in volume displacement can be obtained.

Description

technical field [0001] The invention relates to a periodic structure mosaic circular ring transducer and an assembly method thereof, belonging to the technical field of underwater acoustic transducers. Background technique [0002] In recent years, the noise of ships has gradually decreased. In this case, it has become quite difficult to detect with traditional passive sonar. When passive detection is more difficult, it is a more suitable method to use active sonar and passive sonar to implement detection at a long distance. However, the working frequency of the active sonar must be lower than the lower limit frequency of the anechoic tile. At the same time, the greater the power of the sonar, the higher the sound source level, and the farther the detection distance of the sonar. Therefore, the low-frequency high-power transducer becomes an underwater acoustic The basic requirements for transmitting transducers are also one of the development trends of underwater acoustic t...

AI Technical Summary

Problems solved by technology

[0003]However, the development of low-frequency, high-power and small-sized acoustic emission transducers is limited in many ways

Low frequency transducers tend to be quite large, making bulky transducers inconvenient to use

However, in order to obtain a larger sound source level, the volume displacement of the transducer must be increased, and in order to increase the volume displacement of the transducer, the surface amplitude of the transducer and the surface area of ​​the radiating surface can only be increased, but this leads to the displacement of the transducer The size of the increase, this contradictory requirements bring difficulties to the design

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