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Indirect excitation type piezoelectric energy harvester for river monitoring

A piezoelectric energy harvesting, indirect technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., to achieve strong flow rate adaptability, high reliability, and strong power generation capacity Effect

Active Publication Date: 2017-11-17
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the power supply of the existing river monitoring system, the present invention proposes an indirect excitation piezoelectric energy harvester for river monitoring

Method used

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  • Indirect excitation type piezoelectric energy harvester for river monitoring
  • Indirect excitation type piezoelectric energy harvester for river monitoring
  • Indirect excitation type piezoelectric energy harvester for river monitoring

Examples

Experimental program
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Embodiment Construction

[0010] The inner casing a2 is installed inside the outer cylinder a through the rib a1, and the side wall of the inner casing a2 is provided with a boss a3; the boss a3 is installed with a piezoelectric vibrator c and an excitation reed d through a screw and a pressure ring b, and the excitation The number of piezoelectric vibrators c on both sides of the reed d is equal and arranged symmetrically; the piezoelectric vibrator c is bonded by the metal substrate c1 and the piezoelectric wafer c2, and the metal substrate c1 is installed close to the excitation reed d; the piezoelectric vibrator c is free A suspended magnet g is installed on the end via a screw, and a suspension magnet h, an excited magnet i and a frequency modulation mass j are installed on both sides of the free end of the excitation reed d via screws, and the suspension magnet h is installed opposite to the same-sex magnetic pole of the suspended magnet g The end of the side wall of the inner shell a2 is installe...

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Abstract

The invention relates to an indirect excitation type piezoelectric energy harvester for river monitoring and belongs to the field of piezoelectric power generation. An inner shell is arranged inside an outer cylinder. Piezoelectric vibrators and excitation reeds are arranged on the boss of the inner shell. The free ends of the piezoelectric vibrators are provided with suspended magnets. The free ends of the excitation reeds are provided with suspension magnets, frequency-modulated mass blocks and excited magnets. An end cover is arranged on the end portion of the sidewall of the inner shell. Limiting magnets are arranged on the end cover and the inclined boss of the inner shell. The same magnetic poles of the limiting magnets and the suspended magnets are oppositely arranged. Rollers are arranged on the end cover and inside a bearing on the left side of the inner shell. The rollers are embedded with excitation magnets. A rolling disc on the right side of the rollers is embedded with a driven magnet. The left end surface of the rolling disc and the bottom wall of the end cover are provided with buffer reeds. A shaft sleeve with a blade is arranged in a right bearing of the inner shell. The shaft sleeve is embedded with a driving magnet. Before the installation process, the piezoelectric vibrators are of a flat and straight structure. After the installation process, the piezoelectric vibrators are of a bent structure due to the action of the magnetic force.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric power generation, and in particular relates to an indirect excitation piezoelectric energy harvester for river monitoring, which provides real-time energy supply for the river monitoring system. Background technique [0002] There are thousands of rivers all over the territory of our country. In recent years, due to insufficient treatment of industrial wastewater, soil erosion, and improper use of pesticides and fertilizers, most rivers have been polluted to a certain extent. Nearly 1 / 4 of the rivers or river sections cannot meet basic irrigation due to pollution. need. In addition, because the current flood control facilities for small and medium-sized rivers in many areas are not perfect, or even do not have any flood control facilities, when the flood season comes, it may cause dangers such as embankment failure or flooding, directly threatening the lives and property safety of people al...

Claims

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Application Information

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IPC IPC(8): H02N2/18
CPCH02N2/185
Inventor 郑佳佳朱贝贝程光明
Owner ZHEJIANG NORMAL UNIVERSITY
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