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Leather-based pressure sensor for recording walking track, and preparation method and application thereof

A pressure sensor and leather technology, which is applied in the measurement, instrument, and force measurement of the property force of piezoelectric resistance materials, to achieve the effect of improving compressive stress, enriching the multi-functional application of leather, and low cost of raw materials

Active Publication Date: 2020-05-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no method for preparing pressure sensors by coordination bonding of conductive carbon materials and leather collagen fibers for detecting and guiding human health movements

Method used

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  • Leather-based pressure sensor for recording walking track, and preparation method and application thereof
  • Leather-based pressure sensor for recording walking track, and preparation method and application thereof
  • Leather-based pressure sensor for recording walking track, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Step 1: Take the mass ratio of MWCNT / RGO as 3:0, ultrasonically disperse in NMP to prepare 0.2 mg / mL solution, and then mix with Al 3+ The solution is mixed, where Al 3+ / C is 0.01mmol / mg respectively, pH is 3, stirring reaction at room temperature for 2h, ultrasonically immersing the pigskin in 30 mL mixed solution, drying at 50°C to semi-dry, hot pressing with an electric iron for 10 min to reassemble the collagen surface ;

[0045] Step 2: Cut two pieces of conductive leather of different sizes to make the first leather and the second leather respectively, and use polyvinyl alcohol as the adhesive layer to make a sandwich structure pressure sensor;

[0046] Step 3: Assemble the pressure sensor of a single unit array into a dense array pressure sensor in a circular array, place the dense array pressure sensor on the sole of the shoe, and apply and release the current signal generated by the pressure deformation of the dense array pressure sensor Record walking patte...

Embodiment 2

[0048] Step 1: Take MWCNT / RGO with a mass ratio of 3:1, ultrasonically disperse in NMP to prepare a 0.2 mg / mL solution, and then mix with Cr 3+ The solution is mixed, where Cr 3+The / C is 0.02 mmol / mg, the pH is 11, and the reaction is stirred at room temperature for 3 h. The sheepskin is ultrasonically assisted in immersion in 30 mL of the mixed solution, dried at 50 °C and semi-dried, and hot-pressed with an electric iron for 30 min to reassemble the collagen surface;

[0049] Step 2: Cut two pieces of conductive leather of different sizes to make the first leather and the second leather respectively, and use polyvinyl chloride as the bonding layer to make a sandwich structure pressure sensor;

[0050] Step 3: Place the pressure sensor of a single unit array on the sole of the shoe, and record the walking pattern by applying and releasing the current signal generated by the pressure deformation of the single unit array pressure sensor.

Embodiment 3

[0052] Step 1: Take MWCNT / RGO with a mass ratio of 3:1, ultrasonically disperse in NMP to prepare a 0.2 mg / mL solution, and then mix with Co 2+ The solution is mixed, where Co 2+ / C is 0.08 mmol / mg, pH is 7, stirred and reacted at room temperature for 2.5 h, ultrasonic-assisted immersion in 30 mL of the mixed solution, dried at 50 °C and semi-dried, hot-pressed with an electric iron for 20 min to make the collagen surface secondary assembly;

[0053] Step 2: Cut two pieces of conductive leather of different sizes to make the first leather and the second leather respectively, and use polyurethane as the bonding layer to make a sandwich structure pressure sensor;

[0054] Step 3: Assemble the pressure sensors of a single unit array into a dense array pressure sensor in an irregular array, place the dense array pressure sensor on the sole of the shoe, and apply and release the current generated by the pressure deformation of the dense array pressure sensor The signal records th...

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Abstract

The invention discloses a preparation method of a leather-based pressure sensor for recording a walking track. The method comprises the following specific steps: (1) preparing composite three-dimensional conductive leather with coordination bonding; (2) making the double-layer conductive leather into a piezoresistive sensor through a high polymer material bonding layer; (3) assembling single-pointtype pressure sensors into a dense array type pressure sensor to construct a uniform micro-nano structure conductive network; and (4) arranging the dense array type sensors on soles, converting applied and released pressure into electric signals, detecting walking rules of a human body, and reasonably planning exercise and fitness. According to the preparation method of the pressure sensor for recording the walking track based on the conductive leather, the compression stress is improved, the rebound resilience is enhanced, the stability is improved, wearing is comfortable, moisture and air are permeable, and the human motion law can be monitored in real time to plan reasonable fitness exercises.

Description

technical field [0001] The invention belongs to the technical field of conductive leather and discloses a preparation method of a leather-based pressure sensor for recording walking tracks. Background technique [0002] As an important branch of wearable electronics, flexible pressure sensors have attracted much research due to their wide range of applications, such as human-machine interface, electronic skin, health monitoring, and some application-driven functions. In particular, people pay more and more attention to health, and reasonable monitoring of exercise rules is of great significance for guiding people's health. Running and walking are essential sports for people every day. Using running and walking data to guide and detect reasonable human body movements, falls and postoperative recovery has cross-age significance for the development of human health and life. [0003] Traditional pressure sensors monitor signal flow by modulating the contact resistance between c...

Claims

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Application Information

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IPC IPC(8): A63B71/06G01L1/18G01L1/20
CPCA63B71/06A63B71/0605A63B2220/803G01L1/18G01L1/205
Inventor 罗晓民蒋雯张鹏冯见艳秦荣刘丽成
Owner SHAANXI UNIV OF SCI & TECH
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