Electromagnetic vibration power supply method based on folding cantilever beam

Abstract

The invention belongs to the field of vibration energy power generation, and provides an electromagnetic vibration power supply method based on a folding cantilever beam. The method comprises the following steps: converting vibration with a specific frequency of mechanical equipment into electric energy by an energy collector mounted on the mechanical equipment, and supplying power to a micro-miniature electronic system, wherein the energy collector comprises a base, a mass block and a pair of folding cantilever beams, two ends of the mass block are respectively connected to the base through a folding cantilever beam, two ends of a folding cantilever beam circuitous structure are fixedly connected with the base, the middle part of the folding cantilever beam circuitous structure is fixedly connected with the end part of the mass block, a plurality of coils are fixedly connected to the base through a supporting seat, and the hollow parts which surround the coils and are fixedly provided with permanent magnets are sequentially arranged at intervals on the mass block. When a spring mass block oscillation system vibrates, the coil cuts magnetic lines of force in a reciprocating manner to generate current. The energy collector which is compact in structure and high in electromechanical conversion efficiency is adopted as a power source of the wireless sensor node, so the implementation and maintenance cost is low.

Description

technical field [0001] The invention belongs to the field of vibration energy power generation, and relates to a power generation method with a movable magnet and a stationary coil system, in particular to an electromagnetic vibration power supply method based on a folded cantilever beam. Background technique [0002] In the context of the rapid development of integrated technology, wireless sensor technology is developing towards miniaturization and networking, and is widely used in equipment working process and structural health detection. Traditional wireless sensor nodes are driven by batteries, which have a limited working life and require frequent battery replacement. For wireless sensor networks with a large scale and a large number of nodes, the implementation of this application method requires high maintenance costs. In fact, there are often many forms of energy in the working environment of wireless sensor equipment, such as light energy, mechanical energy, electr...

AI Technical Summary

Problems solved by technology

Although the traditional single straight beam elastic structure has a simple structural design, it is large in size and low in space utilization. It is not practical for small wireless sensor nodes. Therefore, on the basis of ensuring that the elastic coefficient and characteristic frequency are controllable , reducing the size of the cantilever beam and optimizing the spatial layout of the cantilever beam are very important to reduce the volume of the energy harvester, and also help to realize the array design of multiple energy harvester units

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