Noise reduction power generation curtain based on flexible composite phonon structure

Abstract

A noise reduction power generation curtain based on a flexible composite phonon structure comprises a curtain body, the curtain body sequentially comprises a first surface fabric layer, a phonon crystal structure layer, a sound absorption fiber layer and a second surface fabric layer, and the phonon crystal structure layer is composed of a point defect plate column type phonon crystal structure. A PVDF power generation module is arranged at the point defect position of the point defect plate column type phonon crystal structure, the PVDF power generation module is electrically connected with a battery, and an output port is formed in the battery. The point defect plate column type phonon crystal structure adopts a COMSOL Multiphsics simulation phonon crystal structure. The PVDF power generation module comprises two layers of PVDF piezoelectric plates and a PVDF piezoelectric film located between the two layers of PVDF piezoelectric plates. The sound absorption fiber layer is made of natural fibers and granular materials, and the granular materials are bonded on the natural fibers. According to the invention, high-frequency and low-frequency noise can be effectively absorbed, energy in the noise is converted into electric energy through a point defect phonon crystal structure in combination with a piezoelectric structure, the electric energy is stored in a battery, biomass raw materials are also utilized, and the environment-friendly effect is achieved.

Description

technical field [0001] The invention relates to the technical field of curtains, in particular to a noise reduction power generation curtain based on a flexible composite phonon structure. Background technique [0002] For the traditional traffic and industrial noise, relevant scholars have done a lot of work on noise reduction and sound insulation, such as the use of double-layer vacuum glass, large-area rigid sound insulation panels for roads, and construction site enclosures, which can partially eliminate noise. influences. However, the noise reduction process is an energy-consuming process, and the dissipated noise energy brings huge potential losses. For sound insulation in daily life, we often use thickened curtains and screens to achieve it. For curtain-type products such as thickened curtains, its main function is still the shading effect, and its function of absorbing noise is limited, and the sound absorption coefficient is around 0.05 to 0.39. If you want to ac...

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Problems solved by technology

However, its noise reduction process is an energy-consuming process, and the dissipated noise energy brings huge potential losses

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