Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of elastic wearable strain sensor and preparation method thereof

A strain sensor and sensor technology, applied in the sensor field, can solve the problems of complex preparation method and long production cycle of the strain sensor, and achieve the effects of rapid large-area preparation, good product performance and high sensitivity

Active Publication Date: 2020-04-10
UNIV OF SCI & TECH BEIJING
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation methods of these strain sensors are either complicated or the production cycle is relatively long.
The current method with simple production process and short production cycle is still a relatively big challenge for the manufacture of elastic wearable strain sensors.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of elastic wearable strain sensor and preparation method thereof
  • A kind of elastic wearable strain sensor and preparation method thereof
  • A kind of elastic wearable strain sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] Such as Figure 1-3 Shown are three views of the sensor of the present invention, the present invention provides a method for preparing an elastic wearable strain sensor, the preparation method comprising:

[0038] Step 1: Coating conductive powder on the surface of the semi-cured elastic substrate;

[0039] Step 2: curing the semi-cured elastic substrate obtained in step 1 with conductive powder attached to its surface;

[0040] Step 3: Lead out the electrodes at both ends of the conductive powder layer through conductive tape to form an elastic wearable strain sensor.

[0041] The step 1 is specifically:

[0042] 1-1) Stir and mix liquid dimethyl siloxane and curing agent at a mass ratio of 8:1-12:1;

[0043] 1-2) Pour 0.5-50 grams of the mixture obtained in 1-1) into a rectangular box with a flat bottom and a width-to-length ratio of 1:1-20:1;

[0044] 1-3) Put the rectangular box containing the mixture obtained in step 1-1) obtained through step 1-2) into an ove...

Embodiment 1

[0054] (1) Stir and mix liquid dimethyl siloxane and curing agent at a mass ratio of 10:1;

[0055] (2) Pour 3 grams of the mixture obtained in step (1) into a rectangular box with a flat bottom surface of 1 cm in width and 5 cm in length;

[0056] (3) Put the rectangular box containing the mixture obtained in step (1) obtained through step (2) into an oven for processing, the processing temperature is 50 degrees Celsius, and the processing time is 50 minutes; after this processing, the incompletely cured polydimethylsiloxane;

[0057] (4) Take out the rectangular box containing incompletely cured polydimethylsiloxane obtained in step (3), add 1 gram of graphite powder to the incompletely cured polydimethylsiloxane obtained in step (3) On the surface of oxane, use a scraper to completely coat the graphite powder on the surface of the incompletely cured polydimethylsiloxane, and recycle the excess graphite powder;

[0058] (5) Put the incompletely cured polydimethylsiloxane s...

Embodiment 2

[0063] (1) Stir and mix liquid dimethylsiloxane and curing agent at a mass ratio of 9:1;

[0064] (2) Pour 3 grams of the mixture obtained in step (1) into a rectangular box with a flat bottom surface of 0.8 cm in width and 7 cm in length;

[0065] (3) Put the rectangular box containing the mixture obtained in step (1) obtained through step (2) into an oven for processing, the processing temperature is 48 degrees Celsius, and the processing time is 60 minutes; after this processing, the incompletely cured polydimethylsiloxane;

[0066] (4) Take out the rectangular box containing incompletely cured polydimethylsiloxane obtained in step (3), add 2 grams of copper powder to the incompletely cured polydimethylsiloxane obtained in step (3) On the surface of oxane, use a scraper to completely coat the copper powder on the surface of the incompletely cured polydimethylsiloxane, and recover the excess silver powder;

[0067] (5) Put the incompletely cured polydimethylsiloxane surfac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an elastic wearable strain sensor and a preparation method thereof. The sensor mainly comprises conductive powder, a flexible base and a pair of electrodes located at two ends of the elastic base. The preparation method comprises the steps of (1) coating the surface of the semi-solidified elastic base with the conductive powder; (2) solidifying the semi-solidified elastic base with the surface being attached with the conductive powder; and (3) extracting electrodes at two ends of a conductive powder layer so as to form an elastic wearable strain sensor. Compared with other sensors, the elastic wearable strain sensor provided by the invention has the advantages of quick large-area preparation, low cost, good product performance, simple and convenient operation and the like. The elastic wearable strain sensor can detect strain up to 150%, and has the advantages of high sensitivity, fast response and the like. The elastic wearable strain sensor can be attached to the skin surface of a human body, is used for muscular movement detection, and can also be fixed at joints such as the fingers and the knees to perform bending strain detection.

Description

technical field [0001] The invention belongs to the field of sensors, and in particular relates to an elastic wearable strain sensor and a preparation method thereof. Background technique [0002] A wearable device is a computing device that can be installed on people, animals and objects, and can perceive, transmit and process information. Sensors are the core components of wearable devices. Sensors have wearable properties and have important potential for adaption in the fields of intelligent transportation, consumer electronics, medical equipment, smart home, industrial control, aviation and military industry. A strain sensor is a sensor that can be used to detect objects that are deformed by external forces or driven by themselves. With the continuous development of science and technology and the continuous improvement of people's material conditions, the demand for flexible and sensorable electronic devices is increasing. There are a wide variety of wearable devices c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/16A61B5/11
CPCA61B5/1107A61B5/6813G01B7/18
Inventor 张跃廖新勤廖庆亮李明华梁齐杰
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com