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An Ultrasonic Energy Harvester

An ultrasonic energy and collector technology, applied in induction generators and other directions, can solve the problems of low output, narrow resonant frequency band, and inability to actively adjust frequency, and achieve the effect of high energy collection efficiency, wide resonant frequency band, and high output.

Active Publication Date: 2022-04-15
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vibration energy harvesting technology has the problems of not being able to collect omnidirectionally, the resonance frequency band is narrow, and the output is relatively low, especially the problem of not being able to actively adjust the frequency

Method used

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  • An Ultrasonic Energy Harvester
  • An Ultrasonic Energy Harvester

Examples

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Embodiment Construction

[0021] The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0022] Such as Figure 1~2 An embodiment shown: an ultrasonic energy collector, comprising: a fixed frame K, a quality block Q and an interdigital capacitor; the described mass block Q is arranged at the center of the fixed frame K, and the described mass block Q A fixed end P is set in the center of the fixed frame K and a number of interdigitated capacitors are connected between the fixed frame K and the mass Q, the fixed frame K is arranged in a square shape, the mass Q is a disc-shaped structure, and the There are four groups of interdigitated capacitors, and each group of interdigitated capacitors is respectively connected to a frame of the fixed frame K; ...

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Abstract

The invention discloses an ultrasonic energy collector, comprising: a fixed frame, a quality block and an interdigital capacitor; the said mass block is arranged at the center of the fixed frame, and several interdigitated fingers are connected between the fixed frame and the mass block Capacitors, when the central disk receives ultrasonic excitation from multi-dimensional directions, the interdigitated capacitors can change the distance or overlapping area of ​​the electrode plates respectively, and then change the capacitance, resulting in charge changes, so multi-dimensional energy collection can be realized. The invention adopts ultrasonic excitation, has active frequency modulation, is not affected by the external environment, is harmless to the human body, and has high energy collection efficiency; the invention has multi-directional energy collection, resonant frequency bandwidth, high energy collection efficiency and High output characteristics.

Description

technical field [0001] The invention discloses an ultrasonic energy collector and relates to the technical field of energy collectors. Background technique [0002] In the field of environmental energy harvesting, energy harvesting efficiency is a very important evaluation factor, and the overall evaluation of harvesting efficiency is multi-directional, wide-band and high output. For example, a multi-directional broadband piezoelectric energy harvester patent number CN202011035650.1, the collector can collect vibration source energy with a certain frequency bandwidth in the two-dimensional in-plane environment, and at the same time improve the energy collection efficiency and broaden the energy collection The scope of application enhances the practicability. Another example is a piezoelectric energy harvester patent number ZL 201721765738.2, which adopts a circular arc structure design with a certain radian. When the environmental vibration acts on the mass block, the arc-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N1/08
CPCH02N1/08
Inventor 王德波薛至诚惠文龙吉新村
Owner NANJING UNIV OF POSTS & TELECOMM