Wearable electronics and textile applications

1. Wearable electronics and textile applications Erika Györvary

2. Outline of the presentation Smart shirt with electronics resulting from EC IST WEALTHY project Wearable electronics | EGv | Page 1

3. Wearable electronics and textile applications • Leisure and fun • Sport • Professional • Health / telemonitoring Wearable electronics | EGv | Page 2

4. Portable biomedical devices Intelligent tele-alarm system 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 Wearable electronics | EGv | Page 3

5. Portable biomedical devices PULSEAR 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 Wearable electronics | EGv | Page 4

6. Portable biomedical devices SENSATION – non-invasive hemodynamic sensor 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 Wearable electronics | EGv | Page 5

7. Portable biomedical devices Parkinson disease management 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) Wearable electronics | EGv | Page 6

8. Portable biomedical devices Monitoring of physiological signals Wearable electronics | EGv | Page 7

9. Portable biomedical devices LTMS - Aurora Programme 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 Wearable electronics | EGv | Page 8

10. From multi-parameters to redundant sensors: textiles Wearable electronics | EGv | Page 9

11. 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 Wearable electronics | EGv | Page 10

12. Textile Platforms: Second skin Wearable electronics | EGv | Page 11

13. Textile Platforms: Catsuit and long sleeve Wearable electronics | EGv | Page 12

14. Bed sheets Wearable electronics | EGv | Page 13

15. Plethysmography by piezoresistive fabric Two piezoresistive fabric sensors integrated in a seamless shirt providing information about thoracic and abdominal respiration Wearable electronics | EGv | Page 14

16. 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 Strain sensors based on carbon loaded silicone coating Piezoresistive sensors originated from a coating process by using carbon loaded silicone Wearable electronics | EGv | Page 15

17. 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 Wearable electronics | EGv | Page 16

18. 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 MyHeart electronics Wearable electronics | EGv | Page 17

19. The journey to tomorrow Wearable electronics | EGv | Page 18

20. SFIT: today Cardiovascular diseases and rehabilitation Sensing, processing and communicating EC IST MyHeart & Wealthy projects Wearable electronics | EGv | Page 19

21. Microsystems physical sensors (attitude, fall, health, …) SFIT: tomorrow Micro-communicating: sensor interface, processing and wireless Flexible displays • Nano-engineered surfaces • Conductive fabrics • Micro-interfaces Point of care Micro-energy generators Wearable electronics | EGv | Page 20

22. 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 Wearable electronics | EGv | Page 21

23. 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 Wearable electronics | EGv | Page 22

24. 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 Wearable electronics | EGv | Page 23

25. ProeTEX Protection e-textiles, micro-nano structured fiber systems for emergency-disaster wear • 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 Wearable electronics | EGv | Page 24

26. Plastic Optical Fibers integrated in the fabrics Source: Penelope Wearable electronics | EGv | Page 25

27. Thank you for your attention.