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Flexible angle sensor and preparation method thereof

An angle sensor, flexible technology, applied in the direction of instruments, measuring devices, measuring force, etc., can solve the problems of complex sensor preparation process, low sensing performance, high price, etc., and achieve easy large-scale production, simple preparation process, high The effect of angle-aware sensitivity

Active Publication Date: 2019-09-20
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these sensors have problems such as complex preparation process, high price or low sensitivity and low sensing performance.

Method used

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  • Flexible angle sensor and preparation method thereof
  • Flexible angle sensor and preparation method thereof
  • Flexible angle sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of a flexible angle sensor, comprising the following steps:

[0026] a. Preparation of conductive dispersion: 0.05 g of multi-walled carbon nanotubes and 0.1 g of sodium dodecylbenzenesulfonate surfactant were prepared into 50 ml of aqueous dispersion, and stirred at 30° C. and 300 r / min for 1 hour;

[0027] b. Preparation of porous sponge with concave-convex arrangement: use a drawing tool to draw a mask template with a rectangular concave-convex structure, use the mask template to engrave a surface microstructure with concave-convex arrangement on the polyurethane porous sponge, the engraving power is 30W, and the speed is 10mm / s, the precision is 500ppi, and the aspect ratio of the concave-convex structure is 1:4;

[0028] c. Preparation of porous conductive sponge layer with concavo-convex arrangement: immerse the polyurethane porous sponge with concavo-convex structure obtained in step b into the multi-walled carbon nanotube dispersion prepare...

Embodiment 2

[0032] A preparation method of a flexible angle sensor, comprising the following steps:

[0033] a. Preparation of conductive dispersion: 0.5 g of graphene and 1 g of sodium dodecylbenzenesulfonate surfactant were prepared into 100 ml of aqueous dispersion, stirred at 60° C. and 600 r / min for 2 hours;

[0034] b. Preparation of porous sponge with concave-convex arrangement: use a drawing tool to draw a mask template with a zigzag concave-convex structure, use the mask template to engrave a surface microstructure with concave-convex arrangement on the porous polyvinyl alcohol sponge, and the engraving power is 60W. The speed is 55mm / s, the precision is 500ppi, and the aspect ratio of the concave-convex structure is 1:2;

[0035] c. Preparation of porous conductive sponge layer with concavo-convex arrangement: immerse the porous sponge with concavo-convex structure obtained in step b into the graphene dispersion prepared in step a, dry it in a constant temperature drying oven fo...

Embodiment 3

[0039] A preparation method of a flexible angle sensor, comprising the following steps:

[0040] a. Preparation of conductive dispersion: 0.28g of single-walled carbon nanotubes and 0.5g of sodium dodecylbenzenesulfonate surfactant were formulated into 75ml of aqueous dispersion, and stirred at 45°C and 450r / min for 1.5 hours;

[0041] B, the preparation of the porous sponge of concavo-convex arrangement: utilize drawing tool to draw the mask template that has rectangular concavo-convex structure, utilize this mask template to engrave the surface microstructure of concavo-convex arrangement on the porous seaweed cotton sponge, the power of engraving is 45W, and the speed is 30mm / s, the precision is 500ppi, and the aspect ratio of the concave-convex structure is 1:6;

[0042]c. Preparation of porous conductive sponge layer with concave-convex arrangement: immerse the porous seaweed cotton sponge with concave-convex structure obtained in step b into the single-walled carbon nano...

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Abstract

The invention discloses a flexible angle sensor and a preparation method thereof. The sensor comprises a surface packaging layer, a functional layer and a conductive metal wire; the conductive metal wire penetrates through the functional layer by means of sewing; the surface packaging layer is used for packaging the functional layer; the functional layer comprises a porous conductive sponge layer and a flexible thin film supporting layer; the lower surface of porous conductive sponge is connected with the flexible thin film supporting layer; and the outer surface of the porous conductive sponge is of a concave-convex arrangement structure. The preparation method comprises the following steps of: a, the preparation of a uniform conductive dispersion liquid; b, the preparation of concave-convex arrangement porous sponge; c, the preparation of a concave-convex arrangement porous conductive sponge layer; d, the preparation of a functional layer; and e, the preparation of a flexible angle sensor. The flexible angle sensor disclosed by the invention has the advantages of simple preparation process, low preparation cost, short preparation period, easiness in large-scale production, and potential application value in the fields of angle sensing, interpersonal interaction and gesture recognition.

Description

technical field [0001] The invention relates to a sensor and a preparation method thereof, in particular to a flexible angle sensor and a preparation method thereof. Background technique [0002] Flexible electronic pressure / deformation sensors can be classified into piezoelectric, piezoresistive and piezocapacitive. Among them, the mechanism of the flexible piezoresistive sensor is to change the conductive path of the device through the deformation effect generated by the pressure, thereby changing the resistance of the device, resulting in a change in the output current or voltage of the device, and then representing the magnitude of the pressure. Compared with traditional non-flexible devices, flexible pressure / deformation sensors have attracted great research interest in academia and industry due to their ultra-high flexibility and sensing effects. At the same time, such sensors can be widely used in health monitoring, Robots and prosthetics, medical monitoring and diag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22
CPCG01L1/22
Inventor 朱迪段升顺吴俊
Owner SOUTHEAST UNIV
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