Photonic crystal power generating device based on longitudinal vibration band gap

Abstract

The invention provides a photonic crystal power generating device based on a longitudinal vibration band gap. The photonic crystal power generating device comprises a main beam and branched beams, wherein the strut beams are provided with piezoelectric materials and mass blocks for forming local-area vibrator units, and at least two rows of local-area vibrator units with the same structure are arranged on the main beam for forming a photonic crystal structure, the surface of each piezoelectric material on each local-area vibrator unit is vertical to the axis of the main beam, the structure that the at least two rows of local-area vibrator units with the same structure are arranged on the main beam is characterized in that the local-area vibrator units in the same row are distributed at equal intervals, the distance between the local-area vibrator units in each row are equal, and the local-area vibrator units of each row on the cross section of the main beam are distributed at equal intervals. Wideband efficient power generation in a vibrating environment is realized by adopting a photonic crystal technology. The photonic crystal power generating device is simple in integral structure and convenient to manufacture, and has lower requirement on the working environment. The longitudinal vibration power generation frequency band of a piezoelectric vibrating device is effectively widened, and active control is not needed. The photonic crystal power generating device can be used for energy supply of micro-electronics products, such as a wireless sensor.

Description

technical field [0001] The invention relates to a power generation device, in particular to a broadband vibration power generation device suitable for a vibration and noise environment based on the principle of a longitudinal vibration band gap of a phononic crystal. Background technique [0002] In recent years, with the development of integrated circuit technology and micro / nano electromechanical system technology, microelectronic products are widely used in wireless network nodes, environmental monitoring, automobiles, buildings and other important fields. At present, the development of microelectronic products is limited by the miniaturization and lifespan of energy supply devices, so it is very important to develop new micro power supply technology. At present, most of the chemical power supply schemes used in micro-electromechanical systems are only suitable for short life cycles, and it is difficult to cope with the increasing number of wireless network nodes. The vib...

AI Technical Summary

Problems solved by technology

However, this structure is to arrange different cantilever beams on the same substrate, the design of the cantilever beam is complicated, and the production cost is high

Images