Chapter 6:Textiles & Production Chapter 6.1: Textiles & Fashion Chapter 6.2: Making Textiles.
Prof. Lieva Van Langenhove Department of textiles
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Transcript of Prof. Lieva Van Langenhove Department of textiles
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The integration of smart textiles enabling a non-invasive approach in monitoring the user’s vitals and activities
Prof. Lieva Van Langenhove
Department of textiles
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Components
• Sensors and actuators• Communication devices• Energy supply• Data processing• Connections and interconnections
Miniaturisation, packaging, integration, transformation into textiles
Concepts and electro/photo active materials
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Why textiles?
• All around• Versatile• Light weight• Large contact area with body• Comfortable• Easy to use
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Electro conductive textiles
Stainless steel
Kevlar coated with
Knitted Woven non woven
polypyrrol copper gold
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Effects from nano to macro
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Conductive knitted textiles as sensor
Textrodes Respibelt
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EMG monitoring
Myography for stress measurementContactless
Professional use
EMG sensorsembroidered
laminated
(www.context-project.org)
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Pressure sensors
Double layer fabric:No contact contact
Quantum tunneling effect
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Any mechanism that changes conductivity is exploitable for sensors
• Carbon nanotubes for conductivity• Fibre expansion changes conductivity:
•Extension•Heating •Humidity•Chemicals (E. Devaux ENSAIT)
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Humidity control
Sensors:
www.Biotex-eu.com
Absorption: • Thermoresponsive gels• Supporting design
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Optical sensor
Signal A’
Smart interface
Signal B
Textile fibre
Sensor/Processing unit
Sig
nal A
filter
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Smart interface: active dyes
skin
pH
days
Skin pH-variation after burn wound
L. Van der Schueren, K. De Clerck
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Communication
Within components
Between components in a suit‣Conductive fibres‣Optical fibres
With the wearer: •keyboard, •display
Wide environment: •Inductive (embroidery)•Antenna (printing)
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Data processing: Motherboard
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Fibre transistor
Conductive core: gateInsulating coatingSemiconductor coatingElectrode: source
Electrode: drain
Semiconductor Source Insulator Gate Drain
OFET: organic field effect transistor
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Coating: from dip to padding
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OFET textile integration
Weaving structure
Right patterns
Right contacts
No falso contacts
Stable contacts
100µm
Gate source drain
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PEDOT based battery
5 cm
Conducting yarns
1
PEDOT:PSS
Textile substrate
1 mm
Warp
Weft
5 cm
1 cm
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Printed battery: results
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Energy from light: PV
Solar bags
www.dephotex.com
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Energy from motion: piezo electrics
Deformation leads to E field
Needs large surface, no thickness
PVDF
Challenges:• Materials• Concepts• Production (poling)Electrode
Piezo electric layerElectrode
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Smart textile research
• Based on • (semi)conductive materials and structures• Smart dyes
• Conceptual design• Modelling and simulation• Manufacturing• Testing
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Inner garment
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Outer garment
Accelerometers
GPSAntenna
TextileAntenna
Flexible Battery
ExternalTemperature
Alarm
DataRecording
Processing Transmission
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Victim patch
Parameter
• Heart beat rate
• Respiratory rate
• Body Temperature
Cfr. inner garment
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Key issues
Comfort
Working conditions – relevant parameters
Effective alarm generation
System maintenance
Ease of use
Weight
Cost
Robustness
Energy constraints
Long range transmission
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Monitoring Centre
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Accelerometers
GPSAntenna
TextileAntenna
Flexible Battery
ExternalTemperature
Alarm
DataRecording
Processing Transmission
150€
25€
>600€
1500€
www.cutecircuit.com
www.proetex.org
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www. .eu
Coordination action for enhancing the breakthrough of intelligent textile systems (e-textiles and wearable Microsystems)
www. .eu
COLAE: Commercialisation Clusters of OLAE