A density sensing device and method based on triboelectric nanogenerator

A nano-generator and density sensing technology, which is applied in the direction of friction generator and material analysis by observing sunken objects, can solve the problems of reading error and difficulty in online measurement, and achieve the effect of simple structure and low cost

Active Publication Date: 2022-06-07
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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  • A density sensing device and method based on triboelectric nanogenerator
  • A density sensing device and method based on triboelectric nanogenerator
  • A density sensing device and method based on triboelectric nanogenerator

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

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

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Abstract

The invention discloses a density sensing device based on a frictional nanogenerator and a method thereof, which reflect the density of the liquid to be measured according to the volumes of the upper float and the lower float immersed in the liquid to be measured after reaching a static state. Under the action of gravity, buoyancy and viscous resistance, the upper float moves relative to the buoy that always floats on the surface of the liquid to be measured. Due to the coupling effect of frictional electrification and electrostatic induction, the solid friction medium connected to the upper float and The second electrode layer connected with the buoyant platform generates a triboelectric signal due to the relative displacement, so as to calculate the measured value of the density of the liquid to be measured. The invention has the characteristics of simple structure, low cost, safety and environmental protection, and no need for external power supply, and has important application prospects in the fields of aquaculture, energy transportation, food detection, medical care, environmental monitoring and the like.

Description

technical field [0001] The invention belongs to the technical field of fluid thermophysical property measurement, and in particular relates to a density sensing device based on a triboelectric nanogenerator and a method thereof. 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 useful for identifying mixture components, determining material states, and monitoring environmental parameters. aspect plays an important role. As a simple test instrument that can measure density accurately, quickly and efficiently, density meter occupies an indispensable position 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 a balance on the liquid level of the liquid to be measured, and realizes th...

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Application Information

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Patent Type & Authority Patents(China)
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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