Piezoelectric power generation device based on excitation of fluidic micro oscillator
A piezoelectric power generation and power generation device technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the trouble of replacing batteries, energy waste, limited battery energy, etc. problem, to achieve the effect of improving the utilization efficiency, eliminating the need to replace the battery, and having a simple structure
Inactive Publication Date: 2012-07-18
TSINGHUA UNIV
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The invention discloses a piezoelectric power generation device based on the excitation of a fluidic micro oscillator. The device comprises a housing, a bistable fluidic element, a first oscillation cavity, a second oscillation cavity and an output circuit, wherein the first and the second oscillation cavities are symmetrically distributed on the left side and the right side of the bistable fluidic element; diaphragm patches are respectively arranged on the first and the second oscillation cavities; piezoelectric patches are arranged on the diaphragm patches; and a gas inlet of the bistable fluidic element is communicated with a gas exhaust opening of pneumatic equipment. Due to a wall attaching effect of the bistable fluidic element, gas repeatedly circulates in the oscillation cavities on the two sides of the device to form oscillation gas, an oscillation gas flow in the oscillation cavities drives the diaphragm patches on cavity chambers to vibrate, and the vibration of the diaphragm patches drives the piezoelectric patches thereon to vibrate and deform to produce electric charge. By using the device, a waste gas energy resource can be converted into electric energy, power can be supplied to a wireless sensor, the trouble of battery replacement is saved and the energy source utilization efficiency is improved. The device has the advantages of simple structure, energy conservation and environmental friendliness, and is convenient to implement.
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