In order to reduce natural frequency of piezoelectric vibration energy harvester

improve energy harvesting performance of piezoelectric vibration energy harvester

and realize the energy harvesting requirement in low frequency vibration environment

a variable cross section triangular piezoelectric vibration energy collector is proposed.Finite element analysis（FEA）of the energy harvester is carried out

and the experimental platform test system is set up to test the output voltage and output power of the energy harvester.The experimental results show that when the external excitation vibration acceleration is 1.0 g

n

the energy harvester When the end mass is 0.6 g

the maximum output power of the energy harvester can reach 441 μW under the s

tandard energy interface circuit and the optimal resistance is 40 kΩ

which can meet the requirements of power supply for micro power consumption devices.