Test device and test method of piezoelectric energy collector under wake flow interference

A technology for collecting and testing electrical energy, which is used in measurement devices, motor generator testing, and machine/structural component testing.

Inactive Publication Date: 2019-08-13
XIAN UNIV OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Most of the current piezoelectric energy harvesters simply impact the water flow directly on the end mass connected to the cantilever beam, causing the cantilever beam to deform and drive the deformation of the piezoelectric material to generate electric energy. This form of harvester can use The flow rate range is limited, and the utilization rate of water energy is greatly reduced after a certain flow rate is greater than

Method used

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  • Test device and test method of piezoelectric energy collector under wake flow interference
  • Test device and test method of piezoelectric energy collector under wake flow interference

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] The invention provides a piezoelectric energy harvester testing device under wake interference, such as figure 1 and figure 2 As shown, it includes a water tank 1 for providing water flow with different flow rates; a beam 2, two beams 2 parallel to the sides of the water tank 1 are erected on the water tank 1, and slide rails are provided on both sides of the water tank 1 where the beam 2 is erected , the two beams 2 are respectively provided with sliders that cooperate with the slide rails, and the two beams 2 can be moved by using the sliders to cooperate with the slide rails. The two beams 2 are respectively connected to the fixed connecting rod 3 and the threaded connecting rod 4. The fixed connecting rod 3 and The threaded connecting rod 4 is perpendicular to the crossbeam 2 and extends into the water tank 1, the fixed connectin...

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Abstract

The invention discloses a test device of a piezoelectric energy collector under wake flow interference. The device comprises a water tank capable of providing waterflows with different flow velocities, an end portion mass block and a disturbed flow mass block are immersed into water through erection, one side of the end portion mass block is provided with a piezoelectric fiber plate, and an external resistance box ad a voltage test device are connected. The test device can be used for researching the influence of existence of a disturbed flow object on energy collected by the piezoelectric energy collector in a specific waterflow velocity, the voltage generated by the piezoelectric energy collector based on wake flow interference in different flow velocities, different loads and differentcenter distances can be measured, and reference suggestions can be provided for research of piezoelectric energy collection in the hydraulic power aspect.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric energy collector testing, in particular to a piezoelectric energy collector testing device and testing method under wake interference. Background technique [0002] Piezoelectric energy harvester is a device that can convert mechanical energy that exists widely in nature and cannot be directly used at present into electrical energy. It can provide electrical energy to microelectronic devices such as MEMS and sensor devices, and has broad application prospects. Piezoelectric energy harvesters use the positive piezoelectric effect of piezoelectric materials, and generally adopt a cantilever beam structure, which can effectively convert the vibration in the environment into its own deformation, thereby generating a large strain and making the piezoelectric material produce more Great power. [0003] In the past, the research on piezoelectric energy harvesters mainly focused on the utilization ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34G01M99/00
CPCG01M99/007G01R31/34
Inventor 赵道利周捷梁刚刚孙维鹏黄秋红
Owner XIAN UNIV OF TECH
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