Temperature and pressure integrated sensor based on friction nano-generator and sensing method

A nanogenerator, temperature and pressure technology, applied in triboelectric generators, induction generators, thermometers based on material expansion/contraction, etc., can solve problems such as toxicity, difficulty in online monitoring, and easy leakage, and achieve high resolution High, simple structure, low cost effect

Active Publication Date: 2020-12-25
XI AN JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

However, the working fluid in the mercury temperature and pressure sensor has certain toxicity and is prone to leakage. The temperature and pressure need to be measured by different sensors. The measurement signal is easily affected by the ambient air pressure and it is difficult to achieve online monitoring. big limitations

Method used

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  • Temperature and pressure integrated sensor based on friction nano-generator and sensing method
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  • Temperature and pressure integrated sensor based on friction nano-generator and sensing method

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Embodiment Construction

[0040] 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.

[0041] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right" etc. are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred combination or element must have a specific orientation, be constructed a...

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Abstract

The invention discloses a temperature and pressure integrated sensor based on a friction nano-generator and a sensing method. The measured temperature and pressure are reflected according to the volume change of a liquid friction medium after thermal expansion / contraction and the density of a gas buffer medium after expansion / contraction caused by the pressure difference effect of the liquid friction medium. Based on the coupling effect of the triboelectrification effect and electrostatic induction, the liquid friction medium and a solid friction medium move relatively and generate a frictionelectric signal, and the volume change of the liquid friction medium or the density of the gas buffer medium is determined according to the potential difference or the transferred charge quantity ofa first electrode layer and a second electrode layer so as to obtain the temperature or the pressure of an object to be measured. According to the invention, the temperature and pressure integrated sensing is realized, the temperature and pressure integrated sensor has the advantages of low cost, simple structure, safety, environmental protection, no need of an external power supply for energy supply and the like, a measurement signal is not affected by the ambient air pressure, the resolution is high, and remote real-time transmission can be realized.

Description

technical field [0001] The invention belongs to the field of temperature and pressure sensors, and in particular relates to a temperature and pressure integrated sensor and a sensing method based on a friction nanogenerator. Background technique [0002] Temperature and pressure are extremely common and key detection parameters in industrial production and daily life. Correctly measuring temperature and pressure helps to ensure efficient, low-consumption and safe operation of the production process. Temperature and pressure sensors, as the necessary measuring instruments to obtain the temperature and pressure of objects, are widely used in the fields of chemical production, energy utilization, machinery manufacturing and medical care. Among them, the mercury thermometer and the mercury pressure gauge use the principle of the balance of the gravity of the mercury column, the pressure to be measured and the ambient air pressure. According to the change of the height of the mer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02G01K5/00G01L1/08G01L19/00H02N1/04H02N1/06
CPCG01D21/02G01K5/00G01L1/083G01L19/0092H02N1/04H02N1/06
Inventor 张颖占涛涛何茂刚
Owner XI AN JIAOTONG UNIV
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