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Bandwidth adjustable n*3 lattice type vibration energy collector based on modal separation technology

A vibration energy harvesting and mode separation technology, which is applied to piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problems of narrow operating frequency band, low energy conversion efficiency, and output Low power and other issues, to achieve the effect of widening the low frequency band

Active Publication Date: 2017-05-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of narrow working frequency band, low energy conversion efficiency, and low output power of existing energy harvesters, the present invention proposes a vibration pickup structure of n×3 dot matrix vibration energy harvesters with adjustable bandwidth based on mode separation technology. This structure can not only adjust and broaden the frequency band range of the collector, but also adopt a lattice structure design, which can effectively improve energy conversion efficiency and output power

Method used

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  • Bandwidth adjustable n*3 lattice type vibration energy collector based on modal separation technology
  • Bandwidth adjustable n*3 lattice type vibration energy collector based on modal separation technology
  • Bandwidth adjustable n*3 lattice type vibration energy collector based on modal separation technology

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Embodiment 1

[0021] The invention comprises a flexible frame main beam structure a, a piezoelectric cantilever beam b and a quality block c, the flexible frame main beam structure a is a rectangular frame structure, and a hollow rectangular hole is opened in the center; one end of the piezoelectric cantilever beam b is pasted and fixed On the upper surface of the main beam structure a of the flexible frame, the other end is suspended in the air, the suspended length of the piezoelectric cantilever b is less than the width of the rectangular hole, and the mass c is attached to the suspended end of the piezoelectric cantilever b; the six piezoelectric cantilever beams b (n=2) are arranged at equal intervals along the same direction on both sides of the rectangular hole.

[0022] The main beam structure a of the flexible frame is made of PDMS material, and the outer sides of the two sides of the frame parallel to the piezoelectric cantilever beam b are fixed.

[0023] The piezoelectric cantil...

Embodiment 2

[0026] The invention includes a flexible frame main beam structure a, a piezoelectric cantilever beam b and a quality block c, the flexible frame main beam structure a is a rectangular frame structure, and two hollow rectangular holes are opened on the rectangular structure; the piezoelectric cantilever beam b One end is pasted and fixed on the upper surface of the main beam structure a of the flexible frame, and the other end is suspended in the air. The suspended length of the piezoelectric cantilever b is less than the width of the rectangular hole, and the mass c is attached to the suspended end of the piezoelectric cantilever b; Electric cantilever beams b (n=3) are arranged at equal intervals along the same direction on both sides of the two rectangular holes.

[0027] The main beam structure a of the flexible frame is made of PDMS material, and the outer sides of the two sides of the frame parallel to the piezoelectric cantilever beam b are fixed.

[0028]The piezoelect...

Embodiment 3

[0031] The invention includes a flexible frame main beam structure a, a piezoelectric cantilever beam b and a quality block c, the flexible frame main beam structure a is a rectangular frame structure, and four hollow rectangular holes are opened on the rectangular structure; the piezoelectric cantilever beam b One end is pasted and fixed on the upper surface of the main beam structure a of the flexible frame, and the other end is suspended in the air. The suspended length of the piezoelectric cantilever b is less than the width of the rectangular hole, and the quality block c is adhered to the suspended end of the piezoelectric cantilever b; fifteen pieces Piezoelectric cantilever beams b (n=5) are arranged at equal intervals along the same direction on both sides of the four rectangular holes.

[0032] The main beam structure a of the flexible frame is made of PDMS material, and the outer sides of the two sides of the frame parallel to the piezoelectric cantilever beam b are ...

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Abstract

The invention relates to a bandwidth adjustable n*3 lattice type vibration energy collector based on a modal separation technology, and belongs to environment energy collection devices in the technical field of micro energy. The bandwidth adjustable n*3 lattice type vibration energy collector comprises a flexible frame main beam structure, piezoelectric cantilever beams and mass blocks, the flexible frame main beam structure is rectangular, n-1 hollow rectangular holes of the same size and interval are formed successively in the rectangle along the axial direction, n rows of flexible main beams are formed, and n >=2; the piezoelectric cantilever beams of the same quantity are pasted and fixed to each flexible main beam; and the mass blocks are adhered to the hanging ends of all the piezoelectric cantilever beams respectively. According to the collector, the row number n of the piezoelectric cantilever beams is increased or decreased and the sizes of the piezoelectric cantilever beams and the mass blocks are changed, so that the effective bandwidth of a system is adjusted timely, the output continuity and stability of the energy collector are improved, and the environment adaptability of the vibration energy collector is enhanced.

Description

technical field [0001] The invention relates to an environmental energy collection device in the field of micro-energy technology, in particular to an n×3 dot matrix vibration energy collector with adjustable bandwidth based on mode separation technology. Background technique [0002] With the wide application and rapid development of wireless mobile sensing technology in field environment, working condition monitoring and portable medical electronic systems, how to supply power for these electronic devices used in special fields has become a key issue to further promote their application. Getting rid of the shackles of traditional energy supply methods such as large size, short life of chemical batteries, and difficulty in connecting wired power supplies, collecting energy from the surrounding environment of sensors to directly supply power to the system has become a research hotspot in the field of wireless mobile sensing technology applications. [0003] Vibration energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18
CPCH02N2/186
Inventor 李朋伟罗翠线王一平胡杰李刚桑胜波张文栋
Owner TAIYUAN UNIV OF TECH
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