Piezoelectric energy recovery device for pipeline vibration energy harvesting

Abstract

The invention relates to a piezoelectric energy recovery device for pipeline vibration energy collection. The device comprises an energy collection model, an energy recovery circuit, a control circuit, and an energy storage circuit. The energy collection model comprises an annular fixed structure fixed on the outer wall of a pipeline and a plurality of cantilever groups evenly and symmetrically distributed on the annular fixed structure. Each cantilever group includes a plurality of cantilevers which are of bilateral symmetry and have different quality parameters. The problem that it is hard to collect vibration energy in different directions through the existing solution and a single-cantilever device is of poor frequency response and low energy recovery efficiency and needs an additional power supply is solved. The device can collect vibration energy from multiple directions and store the energy in a rechargeable battery.

Description

technical field [0001] The invention relates to an energy recovery device, in particular to a piezoelectric energy recovery device for pipeline vibration energy collection. Background technique [0002] With the development of MEMS technology and wireless sensor technology, wireless sensor network is widely used in various buildings, bridges, pipelines, traffic, and even animal status monitoring. However, the way of supplying energy to wireless sensor nodes is still using traditional battery power supply. This greatly increases the maintenance cost of the wireless sensor network. In some special cases, such as underground, etc., it poses a higher challenge to maintenance. Vibration energy is a kind of environmental energy that has been studied more at present, and has high energy efficiency. Although solar energy has higher energy efficiency, it is easily affected by the weather, resulting in unstable energy collection. The harvesting of vibration energy is relatively ma...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a piezoelectric energy recovery device for pipeline vibration energy collection, the piezoelectric energy recovery device for pipeline vibration energy collection solves the problem that existing solutions are difficult to collect vibration energy in different directions, single cantilever The frequency response of the beam device is poor, the energy recovery efficiency is low, and the device needs an additional power supply. This device can collect vibration energy from multiple directions and store the energy in a rechargeable battery

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