Flexible capacitive pressure sensor

A pressure sensor and flexible capacitor technology, applied in the field of sensors, can solve the problem of low expandability, achieve large dielectric constant, good elasticity, and improve production efficiency

Inactive Publication Date: 2020-06-19
HEBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The current manufacturing method of capacitive pressure sensors is still multi-layer composite, and the layer structure is fixed during the preparation, and the scalability is not high.

Method used

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0027] see Figure 1~3 , in an embodiment of the present invention, a flexible capacitive pressure sensor includes an electrode layer 1, a dielectric layer 2 and a thickened layer 3, the electrode layer 1 is compounded on one side of the dielectric layer 2 to form an electrode structure, and The dielectric layer 2 of the two sets of electrode structures is combined to form a flexible capacitive pressure sensor body, that is, the capacitance change is realized ...

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Abstract

The invention discloses a flexible capacitive pressure sensor, which comprises an electrode layer, dielectric layers and a thickening layer, and is characterized in that the electrode layer is compounded on one side surface of each dielectric layer to form an electrode structure, and the dielectric layers of the two electrode structures are compounded to form a flexible capacitive pressure sensorbody; a plurality of cylindrical bulges are formed and processed on the other side surface of the dielectric layer through a mold; and gaps between every four adjacent cylindrical bulges are used forclamping the corresponding cylindrical bulges on the other dielectric layer, so that stable splicing can be realized, gaps are formed between every two adjacent cylindrical bulges in the longitudinaldirection and the transverse direction, and cross-shaped grooves are formed in the end parts of the cylindrical bulges. According to the invention, the basic structure of the flexible capacitive pressure sensor is formed by the electrode layer and the dielectric layers, and meanwhile, the cylindrical bulges are formed and processed on one side surface of the dielectric layers, and rapid compounding can be realized by the electrode structure, so that the production efficiency can be greatly improved.

Description

technical field [0001] The invention relates to a sensor, in particular to a flexible capacitive pressure sensor. Background technique [0002] At present, more and more special signals and special environments require sensors to be transparent, flexible, stretchable, freely bendable or even foldable, easy to carry, and wearable. Therefore, the development of high-performance, low-cost flexible pressure sensors has very broad application prospects. From the perspective of sensitive mechanism, the types of flexible pressure sensors reported so far can be mainly divided into two types: resistive pressure sensors and capacitive pressure sensors. From the perspective of structural design, the structures of these two types of flexible pressure sensors are very similar, generally including two layers of flexible electrodes and a layer of flexible pressure-sensitive material. The advantages of resistive flexible pressure sensors are mainly high sensitivity, and the preparation an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/14
CPCG01L1/142
Inventor 荆茂盛孟垂舟杨丽王鹏郭士杰
Owner HEBEI UNIV OF TECH
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