Single steady state-multi-mode-based rotary type magnetic shifting piezoelectric energy harvester

Abstract

The invention discloses a single steady state-multi-mode-based rotary type magnetic shifting piezoelectric energy harvester, and aims to solve the technical problems of narrow energy harvesting frequency band, low energy collection efficiency and the like of the current piezoelectric energy harvester in low-frequency high-voltage gas excitation. The magnetic shifting piezoelectric energy harvestercomprises a gas pipe connection apparatus, a power generation apparatus assembly and a rotary driving assembly, wherein the gas pipe connection apparatus is in threaded connection with the power generation apparatus assembly through fastening screws; and the rotary driving assembly is fixed on the power generation apparatus assembly through a ball bearing. By virtue of the rotary driving assembly, the vibration frequency of piezoelectric elements in low-frequency high-voltage gas excitation is improved; and by virtue of nonlinear magnetic force between the rotary driving assembly and the power generation apparatus assembly, single steady state and multi-mode broadband structures are generated, so that energy harvesting frequency bandwidth is expanded, and the energy collection efficiencyand power of the piezoelectric power generation apparatus can be remarkably improved, so that the single steady state-multi-mode-based rotary type magnetic shifting piezoelectric energy harvester haswide application prospect in the field of low-power-consumption electronic equipment energy supply technology.

Description

Technical field [0001] The invention relates to a monostable-multimodal rotary magnetic toggle piezoelectric energy harvester, belonging to the technical field of low-power consumption electronic equipment energy supply. Background technique [0002] In the industrial production process, pneumatic technology is often used to achieve automated production and industrial control. Compared with other transmission and control methods, pneumatic technology has relatively low price, simple installation and maintenance, safe use, no pollution, high speed and high efficiency. In addition, the pneumatic control has the functions of fire prevention, explosion prevention, and moisture prevention. Therefore, pneumatic technology is widely used in processing, manufacturing and other fields. In the pipeline of the pneumatic system, there is a huge amount of energy that has not been effectively used. There are many sensors arranged in the pipeline of the pneumatic system to monitor the flow a...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of existing piezoelectric energy harvesters such as narrow energy harvesting frequency band, low energy collection efficiency, and low power when excited by low-frequency and high-pressure gas, the present invention discloses a single-stable-multimodal rotary The magnetic toggle piezoelectric energy harvester provides an energy supply device with a wide frequency band of energy harvesting, high energy collection efficiency and large output power for low-power electronic equipment.

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