Multistable vibration energy capture structure

Abstract

The invention discloses a multistable vibration energy capture structure. The multistable vibration energy capture structure comprises a support, wherein a clamping plate and a chute are respectivelyarranged at the upper portion and the bottom portion of the support; the clamping plate comprises a left clamping plate and a right clamping plate, a cantilever beam is fixed between the left clampingplate and the right clamping plate through bolts, and the end portion of the cantilever beam is connected with an end permanent magnet; and the side of the chute is provided with an elongated hole, the chute is internally provided with a magnet container, and bottom permanent magnets are installed in the magnet container. According to the invention, the plurality of bottom permanent magnets are installed in the chute, the multistable effect is achieved by introducing the nonlinear magnetic force, under the external excitation action, the cantilever beam is vibrated, and in the vibration process of the cantilever beam, based on the positive piezoelectric effect, the vibration energy is converted to electric energy. The multistable vibration energy capture structure is easy to achieve and regulate the multistable structure, and can effectively improve the energy capture efficiency and widen the working frequency band of the energy capture device.

Description

technical field [0001] The invention belongs to the technical field of energy capture, and in particular relates to a multi-stable vibration energy capture structure. Background technique [0002] With the development of modern electronic technology, low-energy microsensors and microelectromechanical systems are widely used in various aspects of social life such as wireless sensor networks, environmental monitoring, Internet of Things, and structural health monitoring. At present, such tiny electronic devices are mainly powered by traditional chemical batteries, but traditional chemical batteries have the disadvantages of short life, pollution to the environment and high cost of regular replacement. [0003] Green and low-carbon environmental protection has become an inevitable trend of future social development, and renewable energy has been highly valued by the state and society. Energy capture technology is to convert various forms of energy in the environment, such as l...

AI Technical Summary

Problems solved by technology

However, the multi-stable effect of the existing multi-stable energy-harvesting structures is not easy to realize and difficult to adjust, and there are problems in practical applications

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