Wearable electronics and textile applications

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Wearable electronics and textile applications

• Erika Györvary

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Outline of the presentation

• Smart shirt with electronics resulting from
• EC IST WEALTHY project

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Wearable electronics and textile applications

• Leisure and fun
• Sport
• Professional
• Health / telemonitoring

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Intelligent tele-alarm system
Portable biomedical devices

• Objective
• Development of an automatic and reliable fall
  detector
• Features
• Activity monitoring
• Detection rate of 95
• Interactive functionality
• RF alarm transmission
• Interface with base station

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PULSEAR
Portable biomedical devices

• Objective
• integration of HR monitorin an earphone
• Technology platform
• optical sensing of pulsatile blood flow
• acceleration sensing for motion artefacts removal
• Key features
• comfortable and non-invasive method
• robust and reliable pulse detection during sport
  activities
• low-power consumption

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SENSATION non-invasive hemodynamic sensor
Portable biomedical devices

• Objective
• development of a robust, non-invasive oximetry
  sensors
• different targets (earphone, fingering)
• Technology platform
• optical sensing of pulsatile blood flow
  withacceleration sensing for motion artifact
  removal
• Key features
• differential SpO2 measurement
• integrated sensor unit (ambient artifacts)
• wireless
• active artifact cancellation for long term
  monitoring under real life conditions

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Parkinson disease management
Portable biomedical devices

• Objective
• Monitoring of patients suffering from Parkinson
  disease or spasticity
• Eventually closing the loopfor drug dispensing
• Features
• Wireless monitoring of tremor and spasticity
  parameters
• Acquisition on several limbs
• Data collection on portable base unit (body area
  network)
• On-body signal processing
• Downloading (Ethernet or USB)

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Monitoring of physiological signals
Portable biomedical devices
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LTMS - Aurora Programme
Portable biomedical devices

• Objective
• architecture design of intelligent and
  comfortable monitoring system
• Features
• monitoring ECG, SpO2,respiration, activity and
  NIBP
• wireless communication to base station
• data management and transmission from Concordia
  to Europe

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From multi-parameters to redundant sensors
textiles
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Roles of the on-body electronics

• Provide a wired interface with the garment
  sensors
• Provide a wireless interface with a mobile phone
  or PDA and a link to the professional interface
• Perform signal acquisition, digital conversion
  and local data storage
• Perform signal processing (feature extraction,
  classification, etc.)
• Manage the wearable application

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Textile Platforms Second skin
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Textile Platforms Catsuit and long sleeve
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Bed sheets
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Plethysmography by piezoresistive fabric
Two piezoresistive fabric sensors integrated in a
seamless shirt providing information about
thoracic and abdominal respiration
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Strain sensors based on carbon loaded silicone
coating
Piezoresistive sensors originated from a coating
process by using carbon loaded silicone

• Sensor advantages
• Easy to wear
• Multi-dimensional movement representation
• Fast response to stretching

• Sensor disadvantages
• Long settling time after relaxing
• High to very high impedance values
• Tracks connected in series

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Patient Portable Unit

• Small and LightweightOnly 145g, small PDA size
• Easy user interface
• Data transmission over GPRS link
• Sensor interfaces for
• 5-lead ECG
• Impedance measurement (respiration)
• Piezo-resistive bands (movement)
• Skin temperature
• Standard oximetry sensor
• Integrated accelerometers
• Signal processing
• Heart rate
• ECG enhancement
• Powered by a Li-Ion battery
• Autonomy up to 4 hours with real-time streaming
  of all signals over GPRS

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MyHeart electronics

• Acquired signals
• 3-lead ECG (5 and 6 elec.)
• 1 impedance cardiogram (ICG)
• 1 respiration by impedance
• 1 respiration by piezo-resistance
• 1 skin impedance
• 3D or 2x2D accelerometers
• 1 respiration sound
• 32 strain resistance (FE-2)
• Communication
• Download of stored data and streaming mode over
  Bluetooth
• Link with mobile phone and PC
• Size
• 88 x 67 x 18 mm
• 100 grams (incl. battery)

• Generic processing modules
• HR, RR, ECG index features
• BR, BA features
• ACC fo, power, motion index
• Activity classification

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The journey to tomorrow
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SFIT today

• Cardiovascular diseases and rehabilitation

• Sensing, processing and communicating

• EC IST MyHeart Wealthy projects

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SFIT tomorrow

• Microsystems physical sensors
• (attitude, fall, health, )

• Micro-communicating sensor interface, processing
  and wireless

• Flexible displays

• Nano-engineered surfaces
• Conductive fabrics
• Micro-interfaces

• Point of care

• Micro-energy generators

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SFIT the journey to tomorrow, the main trends

• Adding biochemical sensors to physiological
  measurements
• From monitoring single parameter to multiple
  parameters
• Adding actuation capability to sensing and
  monitoring (closing the loop)
• Towards fully autonomous system (energy,
  communication, actuation)
• Towards implementing plastic electronics

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BIOTEX as part of an instrumented textile roadmap

• Current developments are mainly focused on
  physiological measurements with first
  applications targeting sport monitoring and
  prevention of cardiovascular risk
• Biochemical measurements of on-body fluids are
  needed to tackle very important health and safety
  issues
• European co-financed FP6 STREP project started in
  September 2005 and lasting 30 months

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Hydrogel Opal Sensors

• Hydrogel inverse opal 3D mesoporous ordered
  hydrogel structure using a polystyrene opal
  template
• Measurable shift in the diffracted wavelength
  with swelling of the hydrogel inverse opal
• Reversible swelling of antigen-responsive
  hydrogel (competitive immunoassay)
• Connection of the sensor to a spectrophotometer
  and incorporation into a textile for wound
  healing monitoring

• Air
• pH2
• pH7

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Protection e-textiles, micro-nano structured
fiber systems for emergency-disaster wear

• ProeTEX

• Textile and fiber-based integrated smart
  wearables for emergency disaster intervention
  personnel
• Improvement of safety, coordination and
  efficiency of professionals
• Optimization of survivor management
• European co-financed FP6 IP project started in
  February 2006 and lasting 48 months

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Plastic Optical Fibers integrated in the fabrics

• Source Penelope

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Thank you for your attention.