Sound energy acquisition device and method based on friction nanometer generator

The invention provides a sound energy acquisition device and method based on a friction nanometer generator, and relates to the technical field of sound energy acquisition, and the device comprises a local resonance metamaterial plate, a Helmholtz resonant cavity, and a friction nanometer generator. A friction nanometer generator is arranged on the local resonance metamaterial plate, and a Helmholtz resonant cavity is arranged on the upper portion of the friction nanometer generator. The local resonance metamaterial plate comprises a bottom plate and rubber rods, a plurality of grooves with the same row and column number are formed in the bottom plate, and the rubber rods are arranged in the grooves; an empty groove is reserved in the middle of the bottom plate, so that defects are formed in the middle of an array formed by the rubber rods; and a friction nanometer generator is arranged in the empty groove. The technology of combining the local resonance metamaterial plate, the Helmholtz ...