CN108613622A - Method for monitoring deformation based on conductive leather - Google Patents

Method for monitoring deformation based on conductive leather Download PDF

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Publication number
CN108613622A
CN108613622A CN201810415855.9A CN201810415855A CN108613622A CN 108613622 A CN108613622 A CN 108613622A CN 201810415855 A CN201810415855 A CN 201810415855A CN 108613622 A CN108613622 A CN 108613622A
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China
Prior art keywords
leather
conducting
monitoring
deformation based
derivative
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Pending
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CN201810415855.9A
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Chinese (zh)
Inventor
霍峰蔚
谢瑞杰
陈媛媛
张波
张康
李盛
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Nanjing Tech University
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Nanjing Tech University
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Priority to CN201810415855.9A priority Critical patent/CN108613622A/en
Publication of CN108613622A publication Critical patent/CN108613622A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/18Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/103Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1118Determining activity level
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/28Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Dentistry (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Physiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The invention discloses a deformation monitoring method based on conductive leather, which can be used for health monitoring, athletic sports and athletic performance monitoring and recovery guidance and monitoring after injury, and comprises the following steps: bending the conductive leather at different angles, and detecting the resistance change of the conductive leather to obtain a relation curve of the resistance change rate and the bending degree; when the conductive leather is bent at an unknown angle, the bending angle is obtained through a relation curve of the resistance change rate and the bending degree, and the bending degree of the conductive leather can be obtained.

Description

A method of the monitoring deformation based on Conducting leather
Technical field
The invention belongs to flexible electronic fields, and in particular to a method of the monitoring deformation based on Conducting leather.
Background technology
Wearable flexible tensile sensor can convert object deformation to electric signal, be used as deformation monitoring, be supervised in health It surveys, have many applications in terms of motion monitoring and human-computer interaction.The mentality of designing of traditional flexible tensile sensor passes through mostly Contact resistance between regulation and control conductive materials prepares flexible wearable pulling force sensor with the variation of substrate deformation.But this kind of device Part cannot obtain high sensitivity and high pulling force monitoring range simultaneously, due to cannot uniformly control connecing between conductive materials It gets an electric shock and hinders, there is usually no linear relationships between suffered pulling force and relative resistance change, and certain be stranded is brought to data processing It is difficult;And after removing pulling force, the contact resistance between conductive materials cannot restore, this but also device there are larger hysteresis loop, Significantly affect the accuracy of device.These deficiencies will seriously affect the practical application of flexible tensile sensor.To improve its performance, It constructs the conductive network with uniform nano-micro structure structure to receive more and more attention, but the structure in the polymer-based ends such as PDMS It is cumbersome to build nano-micro structure process, leads to cost, is unfavorable for large area preparation.
Invention content
The method for the monitoring deformation based on Conducting leather that the purpose of the present invention is to provide a kind of, solves the above-mentioned prior art One or more in problem.
The present invention provides a kind of method of the monitoring deformation based on Conducting leather, for monitoring health, sports and wound The guidance restored afterwards, includes the following steps:
α 1, the bending that different angle is carried out to Conducting leather obtain resistance by detecting the Conducting leather resistance variations The relation curve of change rate and curvature;
α 2, when Conducting leather carries out the bending of unknown angle, obtained by the relation curve of resistance change rate and curvature To bending angle, you can obtain the curvature of Conducting leather.
Specifically, can reticular structure be cut into Conducting leather, according to different needs, being fixed on the pass of finger or wrist At section, the movement for detecting finger or wrist.
In some embodiments, ranging from -150 ° of unknown angle~150 °.
In some embodiments, Conducting leather includes leather ontology and conductive material, and the leather ontology is led with described Electric material is compound.
In some embodiments, leather ontology is one kind in wet blue, natural leather, synthetic leather or artificial leather,
In some embodiments, conductive material is carbon-based material, metal nano material, nonmetal nano material, conduction Polymer, conductive ink it is one or more.
In some embodiments, carbon-based material includes carbon black and its derivative, carbon nanotube and its derivative, graphene And its derivative, the metal nano material include nanowires of gold, nano silver wire, copper nano-wire, nanogold, it is described nonmetallic to receive Rice material includes silicon nanowires, and the conducting polymer includes polypyrrole and its derivative, Polyaniline and its derivative, polythiophene And its derivative.
Preferably, conductive material is carbon black, carbon nanotube, nano silver wire, copper nano-wire, nanowires of gold, graphene.Its In, due to functional group's carboxyl, amino, hydroxyl, sulfydryl, cystine linkage etc. that leather ontology has, carbon is received in above-mentioned conductive material Mitron and graphene can be combined together by the intermolecular interaction of chemical bond or hydrogen bond etc. with leather ontology, Or be combined together by Electrostatic Absorption and leather ontology, to enhance the combination of conductive material and leather ontology.
In some embodiments, the complex method of conductive material and leather ontology is mechanical agitation, suction filtration, coating, spray It applies, one kind in printing or rotary drum mixing.
Specifically, such as filtering:Leather ontology is cut to sand core funnel diameter to match, is placed in sand core funnel On, the solution that conductive material is prepared is filtered with water circulating pump, by controlling the number filtered, that is, controls above per block leather and leads The quality of electric material, finally by cleaning, drying.
In some embodiments, the additive amount of conductive material is 0.1~10mg/cm2.At this point, the resistance of Conducting leather Magnitude range is 2k Ω/cm2~7k Ω/cm2
In some embodiments, the additive amount of conductive material is 0.3~3mg/cm2.At this point, the resistance of Conducting leather is big Small range is 3k Ω/cm2~5k Ω/cm2
A method of the monitoring deformation based on Conducting leather, for health monitoring, athletic training and sports performance monitoring And Restoration monitoring after wound.
Beneficial effects of the present invention:
1, the method for the embodiment of the present invention is simple, at low cost, use easy to spread;
2, the leather substance in the embodiment of the present invention already popularize and mature production technology, gone using it as platform monitor shape Become, and health monitoring, athletic training and sports performance monitoring can be applied to and resume training monitoring after hindering, to ensure Safety when above-mentioned trained;
3, the three-dimensional multistage structure of the leather substance in the embodiment of the present invention, which has, makes it the huge of pliable pressure sensing Potentiality have potential consumption market by characteristics such as comfortable, wear-resisting, the cheap, good permeabilities of Conducting leather material.
Description of the drawings
Fig. 1 is the structure chart of Conducting leather in embodiment 1;
Fig. 2 is the scanning electron microscope (SEM) photograph of Conducting leather in embodiment 1;
Fig. 3 is response of the Conducting leather to different bending angle in embodiment 1;
Fig. 4 is the resistance change rate of Conducting leather and the relation curve of curvature in embodiment 1;
Fig. 5 is the movement that Conducting leather is used to monitor finger and wrist in embodiment 1.
Specific implementation mode
With reference to embodiment, the invention will be further described.Following embodiment is only intended to clearly illustrate this The performance of invention, and the following examples cannot be limited only to.
Embodiment 1:
Carbon black, surfactant are added in a certain amount of water, ultrasonic disperse is prepared into aqueous dispersions, wherein carbon black Additive amount is 0.5mg/cm2When, it is combined with cow split wet blue using the method for suction filtration.
As shown in Fig. 2, carbon black is uniformly adsorbed onto on the collagenous fibres cluster of leather ontology, and in bending process, leather glue The variation of the distance between fibrinogen cluster will influence the contact resistance between carbon black, and the reduction of the distance between fiber can make its resistance Reduce, distance, which increases, causes its resistance to increase.
As shown in figure 3, Conducting leather can be responded in -150 °~150 ° range inner opposite angle degree variations, specifically, from - 150 °~150 °, every 30 ° of bending angle variation, the relative change rate of resistance changes significantly
S1, the bending for carrying out different angle within the scope of -150 ° -150 ° to Conducting leather, by detecting the conductive skin Resistance variations are removed from office, as shown in figure 4, obtaining resistance change rate and the relation curve of curvature;
Specifically, when bending angle is -150 °~0 °, Y=0.29X-4.8;
When bending angle is 0 °~10 °, Y=86.67X;
When bending angle is 10 °~90 °, Y=0.58X+19.2;
When bending angle is 90 °~150 °, Y=0.2X+50.62;
Wherein, Y is △ R/R (%), the i.e. change rate of resistance;X is curvature (°).
When S2, Conducting leather carry out the bending of unknown angle, obtained by the relation curve of resistance change rate and curvature Bending angle, you can obtain the curvature of Conducting leather.
The Conducting leather is cut into reticular structure, can be applied to the movement that can be used for monitoring finger and wrist.Such as Fig. 5 institutes Show, be attached at finger and wrist when the prepared device based on leather, according to the bending angle of finger, device can have Different electric responses, and there is preferable stability.For wrist, device can distinguish its bending direction and bending angle Degree.
Embodiment 2
Nano silver wire aqueous dispersions are combined using the method for ink-jet printer printing with leather ontology, when nano silver wire Amount is 1mg/cm2When, the resistance of obtained device can be responded in -150 °~150 ° angular range inner opposite angle degree variations.By Appropriate cut out is attached at sole, and in the process of walking, device is bent with the bending of sole, and then makes electric response, It can be used for health monitoring and athletic training.
Embodiment 3
Polypyrrole monomer is sprayed into leather surface and then sprays the liquor ferri trichloridi of 0.3M thereon, passes through original The mode of position polymerization forms polypyrrole conductive layer on collagenous fibres.When the amount of polypyrrole is 1.5mg/cm2When, obtained device Resistance can be responded in -150 °~150 ° angular range inner opposite angle degree variations.It can be used for monitoring human body pass by suitably cutting out Bent-segment, for instructing joint sprain to restore.
The method of the method for embodiment provided by the invention is simple, at low cost, use easy to spread;And leather substance is already Universal and mature production technology goes to monitor deformation using it as platform, and can be applied to health monitoring, athletic training and Sports performance monitors and resumes training monitoring after hindering, safety when ensureing above-mentioned trained;And the three-dimensional multistage of leather substance Structure has the great potential for making it pliable pressure sensing, comfortable, wear-resisting, cheap, ventilative by Conducting leather material Property the characteristics such as good, there is potential consumption market.
Presented above is only the preferred embodiment of the present invention, it is noted that those skilled in the art, not Under the premise of being detached from the invention design, various modifications and improvements can be made, these also should be regarded as the protection of the present invention Within the scope of.

Claims (10)

1. a kind of method of the monitoring deformation based on Conducting leather, which is characterized in that include the following steps:
α 1, the bending that different angle is carried out to Conducting leather obtain resistance variations by detecting the Conducting leather resistance variations The relation curve of rate and curvature;
α 2, when Conducting leather carries out the bending of unknown angle, obtained by the relation curve of resistance change rate and curvature curved Bent angle, you can obtain the curvature of Conducting leather.
2. a kind of method of monitoring deformation based on Conducting leather according to claim 1, which is characterized in that described unknown Ranging from -150 ° of angle~150 °.
3. a kind of method of monitoring deformation based on Conducting leather according to claim 1 or 2, which is characterized in that described Conducting leather includes leather ontology and conductive material, and the leather ontology and the conductive material are compound.
4. a kind of method of monitoring deformation based on Conducting leather according to claim 1 or 2, which is characterized in that described Leather ontology is one kind in wet blue, natural leather, synthetic leather or artificial leather.
5. a kind of novel regulatable leather of electric property according to claim 1 or 2, which is characterized in that the conduction Material be carbon-based material, metal nano material, nonmetal nano material, conducting polymer, conductive ink it is one or more.
6. a kind of novel regulatable leather of electric property according to claim 5, which is characterized in that the carbon-based material Including carbon black and its derivative, carbon nanotube and its derivative, graphene and its derivative, the metal nano material includes gold Nano wire, nano silver wire, copper nano-wire, the nonmetal nano material include silicon nanowires, and the conducting polymer includes poly- Pyrroles and its derivative, Polyaniline and its derivative, polythiophene and its derivative.
7. a kind of method of monitoring deformation based on Conducting leather according to claim 1 or 2, which is characterized in that described Conductive material and one kind that the complex method of leather ontology is during mechanical agitation, suction filtration, coating, spraying, printing or rotary drum mix Or several combination.
8. a kind of method of monitoring deformation based on Conducting leather according to claim 1 or 2, which is characterized in that described The additive amount of conductive material is 0.1~10mg/cm2
9. a kind of method of monitoring deformation based on Conducting leather according to claim 8, which is characterized in that the conduction The additive amount of material is 0.3~3mg/cm2
10. according to a kind of method of any monitoring deformation based on Conducting leather in claim 1 to 9, for health Restore guidance and monitoring after monitoring, athletic training and sports performance monitoring and wound.
CN201810415855.9A 2018-05-03 2018-05-03 Method for monitoring deformation based on conductive leather Pending CN108613622A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109443609A (en) * 2018-10-29 2019-03-08 陕西科技大学 A kind of high-precision piezoresistance sensor material and preparation method thereof based on collagen
CN112525065A (en) * 2020-11-19 2021-03-19 南京医科大学 Micro-crack flexible resistance change mechanical sensor based on mixed resistance entanglement network and preparation method thereof
CN115369647A (en) * 2022-09-23 2022-11-22 陕西科技大学 Preparation method of multifunctional collagen fiber-based flexible wearable sensing material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444928A (en) * 2015-11-30 2016-03-30 重庆大学 Preparation method of piezoresistance type linear flexibility stress sensor
CN105898981A (en) * 2016-04-01 2016-08-24 合肥工业大学 Stretchable electrode based on conductive fabric and preparation method thereof
CN106705829A (en) * 2015-08-21 2017-05-24 中国科学院上海硅酸盐研究所 Flexible wearable conductive fiber sensor and preparation method and application thereof
CN107345929A (en) * 2016-05-04 2017-11-14 江南石墨烯研究院 A kind of elastic biological sensor
CN107693018A (en) * 2017-10-19 2018-02-16 南京工业大学 Leather capable of monitoring humidity change
CN107881768A (en) * 2017-11-29 2018-04-06 合肥工业大学 A kind of stretchable strain transducer based on polyurethane fiber and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106705829A (en) * 2015-08-21 2017-05-24 中国科学院上海硅酸盐研究所 Flexible wearable conductive fiber sensor and preparation method and application thereof
CN105444928A (en) * 2015-11-30 2016-03-30 重庆大学 Preparation method of piezoresistance type linear flexibility stress sensor
CN105898981A (en) * 2016-04-01 2016-08-24 合肥工业大学 Stretchable electrode based on conductive fabric and preparation method thereof
CN107345929A (en) * 2016-05-04 2017-11-14 江南石墨烯研究院 A kind of elastic biological sensor
CN107693018A (en) * 2017-10-19 2018-02-16 南京工业大学 Leather capable of monitoring humidity change
CN107881768A (en) * 2017-11-29 2018-04-06 合肥工业大学 A kind of stretchable strain transducer based on polyurethane fiber and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109443609A (en) * 2018-10-29 2019-03-08 陕西科技大学 A kind of high-precision piezoresistance sensor material and preparation method thereof based on collagen
CN112525065A (en) * 2020-11-19 2021-03-19 南京医科大学 Micro-crack flexible resistance change mechanical sensor based on mixed resistance entanglement network and preparation method thereof
CN115369647A (en) * 2022-09-23 2022-11-22 陕西科技大学 Preparation method of multifunctional collagen fiber-based flexible wearable sensing material

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Application publication date: 20181002