PIEZOELECTRIC HARVESTING SYSTEM

摘要

A piezoelectric harvesting system according to the embodiment of the present invention includes a piezoelectric unit which includes a piezoelectric element and a hitting part which is rotated by external power and controls an interference state with the piezoelectric element according to a rotation speed. According to the embodiment of the present invention, power is efficiently generated by using the rotation speed even though the rotation speed of the hitting part is changed due to the external power which is weak and irregular.