Post on 04-Jan-2016
description
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
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
Why textiles?
• All around• Versatile• Light weight• Large contact area with body• Comfortable• Easy to use
Electro conductive textiles
Stainless steel
Kevlar coated with
Knitted Woven non woven
polypyrrol copper gold
Effects from nano to macro
Conductive knitted textiles as sensor
Textrodes Respibelt
EMG monitoring
Myography for stress measurementContactless
Professional use
EMG sensorsembroidered
laminated
(www.context-project.org)
Pressure sensors
Double layer fabric:No contact contact
Quantum tunneling effect
Any mechanism that changes conductivity is exploitable for sensors
• Carbon nanotubes for conductivity• Fibre expansion changes conductivity:
•Extension•Heating •Humidity•Chemicals (E. Devaux ENSAIT)
Humidity control
Sensors:
www.Biotex-eu.com
Absorption: • Thermoresponsive gels• Supporting design
Optical sensor
Signal A’
Smart interface
Signal B
Textile fibre
Sensor/Processing unit
Sig
nal A
filter
Smart interface: active dyes
skin
pH
days
Skin pH-variation after burn wound
L. Van der Schueren, K. De Clerck
Communication
Within components
Between components in a suit‣Conductive fibres‣Optical fibres
With the wearer: •keyboard, •display
Wide environment: •Inductive (embroidery)•Antenna (printing)
Data processing: Motherboard
Fibre transistor
Conductive core: gateInsulating coatingSemiconductor coatingElectrode: source
Electrode: drain
Semiconductor Source Insulator Gate Drain
OFET: organic field effect transistor
Coating: from dip to padding
OFET textile integration
Weaving structure
Right patterns
Right contacts
No falso contacts
Stable contacts
100µm
Gate source drain
PEDOT based battery
5 cm
Conducting yarns
1
PEDOT:PSS
Textile substrate
1 mm
Warp
Weft
5 cm
1 cm
Printed battery: results
Energy from light: PV
Solar bags
www.dephotex.com
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
Smart textile research
• Based on • (semi)conductive materials and structures• Smart dyes
• Conceptual design• Modelling and simulation• Manufacturing• Testing
Inner garment
Outer garment
Accelerometers
GPSAntenna
TextileAntenna
Flexible Battery
ExternalTemperature
Alarm
DataRecording
Processing Transmission
Victim patch
Parameter
• Heart beat rate
• Respiratory rate
• Body Temperature
Cfr. inner garment
Key issues
Comfort
Working conditions – relevant parameters
Effective alarm generation
System maintenance
Ease of use
Weight
Cost
Robustness
Energy constraints
Long range transmission
Monitoring Centre
Accelerometers
GPSAntenna
TextileAntenna
Flexible Battery
ExternalTemperature
Alarm
DataRecording
Processing Transmission
150€
25€
>600€
1500€
www.cutecircuit.com
www.proetex.org
www. .eu
Coordination action for enhancing the breakthrough of intelligent textile systems (e-textiles and wearable Microsystems)
www. .eu
COLAE: Commercialisation Clusters of OLAE