Piezoelectric energy collecting system

Abstract

A piezoelectric energy collecting system comprises a piezoelectric cantilever beam, piezoelectric pieces, a first vibration frequency sensor, a micro capacitor, a second vibration frequency sensor, a single chip microcomputer, a motor drive chip, a micro motor, a coupler, a supporting frame, a ball nut, a ball screw rod, a screw cap, a connection rod, a mass block and a sliding channel. The piezoelectric cantilever beam is installed on a vibration structure body, the front face and the back face of the piezoelectric cantilever beam are covered with the piezoelectric pieces, the first vibration frequency sensor is installed on the vibration structure body and is respectively connected with the micro capacitor and the single chip microcomputer through wires, the micro capacitor, the second vibration frequency sensor, the single chip microcomputer, the motor drive chip and the micro motor are all arranged on the piezoelectric piece on the front face of the piezoelectric cantilever beam, the micro capacitor is connected with the second vibration frequency sensor through a wire, and the second vibration frequency sensor is connected with the single chip microcomputer through a wire. Vibration frequency of a piezoelectric vibrator is adjustable.

Description

technical field [0001] The invention relates to a piezoelectric energy collection system and belongs to the technical field of piezoelectric vibration energy collection. Background technique [0002] Piezoelectric vibration power generation devices generally require piezoelectric cantilever beams to work in a resonance state, so that the energy generated is the largest, while the mass blocks of existing piezoelectric vibration power generation devices are fixed on the free end of the cantilever beam, and the vibration frequency of the piezoelectric vibrator It is not adjustable, and can only absorb external vibrations of a certain frequency. The application range is narrow, and it is not suitable for various occasions and environments with different vibration frequencies. In order to solve the above problems, it is necessary to develop a piezoelectric vibration energy harvesting device with adjustable vibration frequency and suitable for use in different vibration frequency ...

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is that the vibration frequency of the piezoelectric vibrator of the existing piezoelectric vibration power generation device cannot be adjusted

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