| 摘要 |
PURPOSE: A piezoelectric power generator and a wireless sensor network system including the same are provided to have different resonance points from each other by providing a piezoelectric power generation device which includes a metal plate in which a mass with different weight is fixed. CONSTITUTION: A piezoelectric power generation device(100) comprises a metal plate(110) of a cantilever structure which provides a function such as a torsion bar, a substrate(120) which supports the metal plate, a jig(130) which fixes the substrate, and etc. The metal plate, the substrate, and the jig are aligned to each other. The metal plate, the substrate, and the jig are combined using a fixing screw(150). A frequency of the piezoelectric power generation device is changed by controlling a tightening degree of the fixing screw. |
