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Acoustic energy recycling device

A sound energy recovery and sound wave technology, applied in electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can solve the problem of limited internal space, difficulty in placing piezoelectric transducers, Reduce the effect of structural sound energy recovery and other problems to achieve the effect of simple structure and convenient manufacturing

Inactive Publication Date: 2016-03-09
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited internal space available for the above two devices, it is difficult to place a larger number and different types of piezoelectric transducers, which reduces the sound energy recovery effect of the structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 Shown is a sound energy recovery device of the present application. The sound energy recovery device constructs line defects in a two-dimensional phononic crystal, which can realize the localization of sound waves, that is, realize sound pressure amplification and sound energy focusing in a local area of ​​sound; And a piezoelectric cantilever array is placed in the two-dimensional phononic crystal as a transducer, which can be used to recover urban environmental noise caused by industrial production, road traffic, and construction, and realize the conversion of sound energy to electrical energy.

[0031] The acoustic localization effect of two-dimensional phononic crystal line defects is mainly affected by the following factors: physical parameters such as mass density and elastic constant of the component medium; geometric shape, volume fraction and arrangement orientation of the filling medium; Arrangement structure; Implantation position of line def...

Embodiment 2

[0045] The cross-sectional shape of the acrylic cylinder 1 used in this embodiment is square, and the arrangement structure of the two-dimensional lattice unit is hexagonal, and the rest are the same as in Embodiment 1.

Embodiment 3

[0047] The cross-sectional shape of the acrylic cylinder 1 used in this embodiment is triangular, and the arrangement structure of the two-dimensional lattice units is triangular, and the rest are the same as in the first embodiment.

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Abstract

The invention relates to an acoustic energy recycling device. According to the acoustic energy recycling device, a linear defect is constructed in a two-dimensional photonic crystal for realizing sound wave localization. Furthermore a piezoelectric cantilever beam array is placed into the two-dimensional photonic crystal as an energy converter for converting the acoustic energy to electric energy. Compared with the prior art, the acoustic energy recycling device has advantages of simple structure, convenient manufacture, etc.

Description

technical field [0001] The invention relates to the technical field of energy recovery devices, in particular to an acoustic energy recovery device. Background technique [0002] In recent years, micro-electromechanical systems and wireless sensors have been widely used, and their power supplies are mostly supplied by chemical batteries, which need to be replaced regularly, resulting in high maintenance costs and permanent environmental pollution. Recovering the energy in the environment and converting it into electrical energy to power wireless devices is a good way to solve the above problems. Research in this area has attracted the attention of many scholars. Compared with environmental energy such as solar energy, wind energy, and vibration energy, there are relatively few studies on the recovery of acoustic energy in the environment. Acoustic energy is a green sound source that exists widely and can be obtained sustainably, and is not affected by changes in weather, en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18
CPCH02N2/18
Inventor 郭辉王岩松徐驰刘宁宁章伟王孝兰
Owner SHANGHAI UNIV OF ENG SCI
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