Wind-induced vibration energy collector based on multi-cylinder wake excitation

The invention relates to wind-induced vibration energy collectors, in particular to a wind-induced vibration energy collector based on multi-cylinder wake excitation. The wind-induced vibration energy collector is applicable to low-power electronic equipment such as a sensor which needs to acquire energy from an external environment and comprises external frame columns, a central cylinder, piezoelectric transducers, connecting springs and frame rods. The wind-induced vibration energy collector is characterized in that wind load in an environment acts on the external frame columns, airflow is separated on the surfaces of the external frame columns and generates alternating-falling vortexes at the tails of the external frame column, the central cylinder vibrates under the action of the wake of the frame columns, the vibration of the cylinder drives arc-shaped metal sheets to deform, and piezoelectric elements adhered to the arc-shaped metal sheets deform and polarize to externally output voltage. The wind-induc