A high-power high-frequency directional emission underwater acoustic transducer and its preparation method
A technology of underwater acoustic transducers and directional emission, which is applied in directions such as fluids that utilize vibrations, can solve problems such as low energy transfer efficiency, and achieve high-power effects
Active Publication Date: 2022-02-18
BEIJING INFORMATION SCI & TECH UNIV
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Problems solved by technology
Therefore, the underwater acoustic wireless charging device designed by relying on traditional transducers will inevitably have smaller energy transfer efficiency as the acoustic wave transmission distance increases.
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[0033] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below through specific embodiments and accompanying drawings.
[0034] The structure of the high-power, directional underwater acoustic emission transducer of this embodiment is as follows figure 1 As shown, it includes piezoelectric composite material, matching layer, heat dissipation structure, sound-absorbing backing, waterproof and sound-permeable layer, and shell. Among them, the piezoelectric composite material is a large-scale 1-1-3 type piezoelectric composite material prepared by cutting-infusion technology, so as to realize the advantages of high power and directional emission of sound waves of the transducer. Electrodes of piezoelectric composites ( figure 1 The electrode is not shown in the figure) adopts low-temperature cured silver paste, which satisfies high solderability and high firmness at ...
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The invention relates to a high-power high-frequency directional emission underwater acoustic transducer and a preparation method thereof. The emitting underwater acoustic transducer includes a piezoelectric composite material, an electrode, a matching layer, a heat dissipation structure, and a sound-absorbing backing; the piezoelectric composite material is a 1‑1‑3 type piezoelectric composite material, consisting of a piezoelectric phase, a passive phase and The structural phase is composed of the piezoelectric phase as an array of piezoelectric material columns, the structural phase is a rigid material frame between the piezoelectric material columns, and the passive phase is a flexible polymer between the piezoelectric phase and the structural phase; the heat dissipation structure is a The structure in the piezoelectric composite is the same rigid material frame; the sound-absorbing backing is distributed in the heat-dissipating structure. The present invention uses piezoelectric materials with low loss and high voltage resistance and combines the 1-1-3 piezoelectric composite structure to design a launch-type converter with the characteristics of high frequency, high directivity, high power, low loss, and fast heat dissipation. The energy device can realize the continuous transmission of directional energy through sound waves within a distance of 10m in the marine environment.
Description
technical field [0001] The invention belongs to the technical field of piezoelectric transducers, and in particular relates to a piezoelectric composite material-based high-frequency underwater acoustic transducer with high-power directional emission acoustic wave characteristics and a preparation method thereof. Background technique [0002] With the development of Unmanned Undersea Vehicle (UUV for short) and underwater sensor networks, the point energy supply methods of these devices require higher and higher automation and long-distance transmission. Traditional salvage charging and electromagnetic underwater wireless charging have the characteristics of high charging efficiency, but the disadvantages of difficult operation and charging distance of only a few millimeters limit most applications. [0003] In recent years, underwater power wireless transmission technology has attracted widespread attention from all over the world. This charging method gets rid of the shac...
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IPC IPC(8): B06B1/06
CPCB06B1/0629B06B1/067B06B1/0685
Inventor 秦雷仲超王丽坤
Owner BEIJING INFORMATION SCI & TECH UNIV