Density sensing device and method based on friction nanometer generator

A nanogenerator and density sensing technology, which is applied in triboelectric generators, material analysis by observing sunken objects, etc., can solve the problems of reading errors, difficulty in online measurement, etc., and achieve the effect of simple structure and low cost.

Active Publication Date: 2021-06-18
XI AN JIAOTONG UNIV
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Problems solved by technology

There is mechanical movement in the working process of the float density meter. The friction nanogenerator is used to detect the displacement of the density meter, and the displacement signal is converted into an electrical signal. question

Method used

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  • Density sensing device and method based on friction nanometer generator
  • Density sensing device and method based on friction nanometer generator
  • Density sensing device and method based on friction nanometer generator

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] like figure 1 and 2 As shown, a density sensing device and method based on a triboelectric nanogenerator provided in this embodiment includes: an upper float 1, which is used to measure the liquid density by immersing itself in the volume of the liquid to be measured; a lower float 2, which is used to balance The gravity of the density sensing device; weight 3, for moving down the center of gravity of the upper float 1 and the lower float 2; the first electrode layer 4, used as the reference electrode of the ...

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Abstract

The invention discloses a density sensing device and method based on a friction nanometer generator. The density of a liquid to be measured is reflected according to the volume of an upper floater and a lower floater immersed in the liquid to be measured after the upper floater and the lower floater reach a static state. The upper floater moves relative to a floating platform which always floats on the liquid level of the liquid to be measured under the action of gravity, buoyancy and viscous resistance, and due to the coupling action of the triboelectrification effect and electrostatic induction, a solid friction medium connected with the upper floater and a second electrode layer connected with the floating platform generate a friction electric signal due to relative displacement, and calculation is performed to obtain a measured value of the density of the liquid to be measured. The device has the advantages of being simple in structure, low in cost, safe, environmentally friendly, free of external power supply for energy supply and the like, and has important application prospects in the fields of aquaculture, energy transportation, food detection, medical care, environment monitoring and the like.

Description

technical field [0001] The invention belongs to the technical field of measuring fluid thermophysical properties, and in particular relates to a density sensing device and a method thereof based on a frictional nanogenerator. Background technique [0002] Density is one of the most common thermophysical properties in production and life. It is widely used in industrial production, energy development, food testing and medical care. The measurement of density is very important for identifying the components of mixtures, determining the state of substances, and monitoring environmental parameters. plays an important role. As a simple testing instrument that can measure density accurately, quickly and efficiently, a density meter plays an indispensable role in engineering applications and real life. Among them, the float type density meter is made by using Archimedes' law and the condition that the float maintains balance on the liquid surface to be measured. The liquid density...

Claims

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Application Information

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IPC IPC(8): H02N1/04G01N9/20
CPCH02N1/04G01N9/20
Inventor 张颖占涛涛张恒飞宿禹祺张勇博何茂刚
Owner XI AN JIAOTONG UNIV
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