PIEZOELECTRIC ENERGY HARVESTING APPARATUS USING CRANK ROD AND GEAR AND SELF GENERATING SENSOR USING THEREOF

摘要

Disclosed are a piezoelectric energy harvesting apparatus for a vibration structure using a crank rod and a gear and a self generating sensor using the same. According to one embodiment of the present invention, provided is the piezoelectric energy harvesting apparatus using the crank rod and the gear which includes a cantilever beam which is formed on the side of the vibration structure and receives a transverse vibration of the vibration structure, the crank rod whose one end is connected to a free terminal of the cantilever beam which protrudes and which is driven by the transverse vibration of the cantilever, a first sawtooth gear which is connected to the other end of the crank rod and is rotated by the connection of the driving of the crank rod, a second sawtooth gear which has the number of sawtooth which is greater than the number of sawtooth of the second sawtooth gear and is rotated by being engaged with the first sawtooth gear, and a plurality of piezoelectric members which generate electric energy by being deformed by being hit by the sawtooth of the rotating second sawtooth gear.