Three-dimensional broadband random vibration energy harvester

Abstract

The invention discloses a three-dimensional broadband random vibration energy collector, comprising a base, two supporting connecting rods, a cylindrical cavity and a power output structure arranged on the cylindrical cavity; one end of one of the two supporting connecting rods is connected with one end of the base, and the other end is connected with one end of the cylindrical cavity; one end of the other one of the two supporting connecting rods is connected with the other end of the base, and the other end of the supporting rod is connected with the other end of the cylindrical cavity; and when the energy collector senses vibration in the external environment, the power output structure produces power output. The energy collector adopts the movable connecting rods and the cavity structure, the movable connection between the connecting rods and the cavity plays a role in sensing outside vibration in the energy collector, that is, a vibration pick-up structure of the energy collector is constituted, and the adopted movable connection vibration pick-up structure can sense a vibration source in any direction and any frequency band, so that three-dimensional broadband vibration energy collection is realized.

Description

technical field [0001] The invention relates to a vibration energy capture device, in particular to a three-dimensional broadband random vibration energy collector. Background technique [0002] With the rapid development of the economy, the consumption of energy has also increased rapidly. So far, most of our life and production rely on the consumption of fossil energy. Extensive use of fossil energy has caused environmental problems such as greenhouse effect and smog. In addition, the non-renewable characteristics of fossil energy Nor does it meet the requirements of sustainable development. Therefore, the requirement to establish a clean, environmentally friendly and renewable energy structure is becoming more and more urgent. For this reason, environmental energy harvesting technology, which converts other forms of energy in the environment (such as solar energy, thermal energy, wind energy, vibration energy, chemical energy, sound energy, fluid energy, etc.) into elect...

AI Technical Summary

Problems solved by technology

At present, most vibration energy harvesting devices can only effectively pick up the vibration energy along the main vibration direction of the vibration pickup structure in the collector, and the vibration excitation frequency is required to be within a narrow frequency band near the first-order modal frequency of the vibration pickup structure. When the frequency of the vibration source is far away from this frequency band or the excitation direction deviates from the main vibration direction of the structure, the output of the collector will drop sharply

However, the frequency of the vibration source in the environment changes randomly, and the vibration direction is also uncertain. Therefore, a vibration energy harvester that can only respond to a single direction and a single frequency band is not practical for collecting vibration energy in the actual environment.

Images