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Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
Wireless Distributed Sensor Networks Verhaert
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Wireless Distributed Sensor Networks Verhaert

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An overview of Verhaert research in the field of wireless distributed sensors presented on Innovation Day '07

An overview of Verhaert research in the field of wireless distributed sensors presented on Innovation Day '07

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  • 1. © MASTERS IN INNOVATION ® Wireless distributed sensor networks VERHAERTINNOVATIONDAY – OCTOBER 12th, 2007 www.mastersininnovation.com WIRELESS DISTRIBUTED SENSOR NETWORKS Koenraad Rombaut koenraad.rombaut@verhaert.com www.verhaert.com Commercially confidence – This presentation contains ideas and information which are proprietary of VERHAERT, Masters in Innovation®*, it is given in confidence. You are authorized to open and view the electronic copy of this document and to print a single copy. Otherwise, the material may not in whole or in part be copied, stored electronically or communicated to third parties without prior agreement of VERHAERT, Masters in Innovation®*. * VERHAERT, Masters in Innovation is a registered trade name of Verhaert Consultancies N.V. www.mastersininnovation.com CONFIDENTIAL 12.10.2007 Slide 1
  • 2. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Distributed Sensor Networks, enabling Technology in Development www.mastersininnovation.com Distributed sensors networks have become a highly active research area because of their potential of providing diverse services to a broad range of applications, not only on science and engineering, but equally importantly on issues related to critical infrastructure protection and security, health care, the environment, energy, food safety, and the potential impact on the quality of all areas of life. VERHAERT will demonstrate a phased approach towards a distributed sensor set-up for local body area networks and their potential in security applications. Furthermore, other potential applications will be discussed while the current status of technology is being outlined. CONFIDENTIAL 12.10.2007 Slide 2
  • 3. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Content • Introduction www.mastersininnovation.com • Swans: a Verhaert inertial sensor network • The applications • Architecture and building blocks • How to select or define a wireless sensor network • Low power as a critical design driver • Conclusion CONFIDENTIAL 12.10.2007 Slide 3
  • 4. © MASTERS IN INNOVATION ® Wireless distributed sensor networks What’s in a name ? www.mastersininnovation.com • Wireless = – wireless data transmission – autonomous: on board power source (e.g. battery) – often: on board intelligence • Sensor = – sensing physical parameters, e.g. temperature • Network = – added value of multiple nodes, due to cooperation, e.g. Swans skeleton, inter vehicle communication • e.g. Swans: a body area network (BAN) of wireless inertial sensors for motion capturing CONFIDENTIAL 12.10.2007 Slide 4
  • 5. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Market trends for wireless sensor networks www.mastersininnovation.com CONFIDENTIAL 12.10.2007 Slide 5
  • 6. © MASTERS IN INNOVATION ® Wireless distributed sensor networks European research on wireless sensor networks Wireless sensor networks www.mastersininnovation.com = a very active research area – Swans: Silicon platforms for Wireless Advanced Networks of Sensors – Stella: stretchable electronics – E-Cubes: stacking technology – Witness: security wireless sensor network – MyHeart: medical smart wireless sensors – Mimosa: Microsystems platform for MObile Services and Applications – Vibes: vibration energy scavenging – Eyes: self organizing networks Applications need mature technology CONFIDENTIAL 12.10.2007 Slide 6
  • 7. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Swans: a European cooperation www.mastersininnovation.com • SWANS = Silicon platforms for Wireless Advanced Networks of Sensors • a Medea+ European project • Partners: – silicon design companies (Atmel, STM, NXP, Ansem) – research institutes (IMEC, CEA-Leti) – application oriented companies (Verhaert, LMS, EADS, France Telecom) • Verhaert’s role & interest: development of a wireless body area network for motion tracking sensors for health and fitness applications CONFIDENTIAL 12.10.2007 Slide 7
  • 8. © MASTERS IN INNOVATION ® Wireless distributed sensor networks The Verhaert inertial sensor body area network • Inertial sensor (iTrack) www.mastersininnovation.com per limb, capturing IMU sensor platform personal 3D orientation hub • Wireless data link communication from limb hub - station communication to personal hub sensor-hub • Virtual skeleton reconstruction in personal hub • Wireless communication of skeleton motion base from BAN hub station to base station CONFIDENTIAL 12.10.2007 Slide 8
  • 9. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Wireless technology for RT motion capturing Skeleton & Virtual model Motion capture suit on wireframe with texture and Virtual model real world body representation www.mastersininnovation.com representation with skin surface of virtual model of sensors Swans CONFIDENTIAL 12.10.2007 Slide 9
  • 10. © MASTERS IN INNOVATION ® Wireless distributed sensor networks A sensor network for pedestrian navigation www.mastersininnovation.com • Motion capturing • Step detection • Step distance & direction CONFIDENTIAL 12.10.2007 Slide 10
  • 11. © MASTERS IN INNOVATION ® Wireless distributed sensor networks From a good sensor node to a sensor network Full body Single sensor Single sensor Sensor network wired dev. kit (COTS) node (custom) demonstrator www.mastersininnovation.com + CONFIDENTIAL 12.10.2007 Slide 11
  • 12. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Other Verhaert sensor network applications • Healthcare: – revalidation www.mastersininnovation.com – activity monitor – fall detection – ergonomics • Security – track & trace • Sport: – training – technique improvement – activity monitoring • Animation – motion data capturing – game controller (cf. Wii) – virtual reality controller CONFIDENTIAL 12.10.2007 Slide 12
  • 13. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Typical healthcare & fitness applications & trends www.mastersininnovation.com • Verhaert motion capturing • Elderly: fall detection, activity monitoring, track & trace => low power / long range • EMG, EEG, ECG on flex pcb • SiP: 3D BGA stacking full system on 14 x 14 x 12 mm³ low power 15 mW @ 1 Mbps / 50 m • geo-fencing / track & trace • Man overboard tracking similar for location based services => on board intelligence important CONFIDENTIAL 12.10.2007 Slide 13
  • 14. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Typical industrial & environmental applications • Building automation: domotics, metering www.mastersininnovation.com • Industrial automation, e.g. process monitoring, object tracking • Asset management: track & trace • Automotive, e.g.traffic monitoring, traffic control, LBS => long lifetime (10+ year) • Security • Military, e.g. battlefield surveillance • Environmental monitoring, e.g. agriculture, habitat, seismic, marine => deployment in large quantities and over large areas CONFIDENTIAL 12.10.2007 Slide 14
  • 15. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Added value of wireless sensor networks • Deployment cost Wired = high infrastructure cost ~ number of sensors & application area [m²] www.mastersininnovation.com => large application areas or high number of sensors • Flexibility sensor location can be changed easily, network is easily expandable (10 => 10 000 sensors) • Mobility => moving objects (e.g. automotive, people) • Track & trace for moving objects • Network = interaction between nodes • Constraints – Low power – Lack of standardisation CONFIDENTIAL 12.10.2007 Slide 15
  • 16. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Sensor node hardware architecture Motion node hardware www.mastersininnovation.com Case: motion node Antenna COTS radio UART MEMS sensors Generic ADC µC SPI Power circuit Battery CONFIDENTIAL 12.10.2007 Slide 16
  • 17. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Software architecture and building blocks Swans building Description blocks OSI network layer model www.mastersininnovation.com Base station / Data logging & pers. hub visualisation application Embedded Inertial: strap- algorithms down, Kalman OS Scheduler Data acquisition Sensor interface Wireless Proprietary communication Data transfer Proprietary Base station / Proprietary pers. hub communication CONFIDENTIAL 12.10.2007 Slide 17
  • 18. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Parameters for a sensor network configuration Parameter Target Typical value Swans full motion www.mastersininnovation.com Lifetime / Autonomy high days to years 2 h sufficient Number of sensors high 10 – 10 000 16 Data update interval long interval: days to sec 100 Hz Bandwidth low 1 – 100 kbits/s 250 kbits/s Range medium m to km 10 m Sensor cost low 1 – 5000 € 3000 € acceptable • Quality of Service • Deployment • Communication medium • Mobility • Sensor homogeneity • Infrastructure & topology • Certification • Coverage • Standardisation / interoperability • Connectivity CONFIDENTIAL 12.10.2007 Slide 18
  • 19. © MASTERS IN INNOVATION ® Wireless distributed sensor networks What about a standard ? Established standard www.mastersininnovation.com WiMax Power Non mature standard Wifi Proprietary gsm 6lowpan UWB BTnode Target area Bluetooth WirelessHart Greenpeak Wavenis Wisa Zigbee /Ubiwave Wibree IMEC Number of sensors CONFIDENTIAL 12.10.2007 Slide 19
  • 20. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Low power is essential for low cost deployment www.mastersininnovation.com • Dynamic power management: duty cycling, external event trigger (e.g. radio, piezo-sensor for step counter), shutting down / switching off functions like sensing, radio, processor, deep sleep mode, … • Dynamic Scaling: Voltage or frequency reduction, adaptive depending on workload, asynchronous logic, … • Data reduction: intelligent algorithms reduce data transfer volume e.g. compression, only sending relevant events, on board interpretation, … • Ultra low power building blocks: processor architecture, memory, transceiver, sensors, ADC, … CONFIDENTIAL 12.10.2007 Slide 20
  • 21. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Power sources: overview Classics Wireless Sheet-like www.mastersininnovation.com Batteries sensors New chemicals Solar Power Energy source Thermal harvesting Vibration Fuel cells Fuel combustion Microturbine CONFIDENTIAL 12.10.2007 Slide 21
  • 22. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Power sources : battery evolution • Classics: NiCd www.mastersininnovation.com • Improved: Ni-MH => commodities • Current standard: Li • Li-ion • Li-polymers => mobile phones • Latest state-of-the-art • Li-S: dense, lightweight, high voltage, high current • Battery = limited lifetime + waste problem CONFIDENTIAL 12.10.2007 Slide 22
  • 23. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Power sources: some other trends www.mastersininnovation.com • Micro fuel cells • Flexible batteries • Thin film solar cells • Electro-mechanical conversion • Ultra-capacitors CONFIDENTIAL 12.10.2007 Slide 23
  • 24. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Power source: vibration energy scavenger • Working principle • MEMS element picks up environmental vibration www.mastersininnovation.com • transforms vibration into electrical energy • capacitive or piezo-electrical or electro-magnetic • Specifications • from 10 µW average up to 1 mW peak • some mm³ • Applications • Motors & rotating equipment • Wearables • Vehicles (distribute sensing) • Status • technological demonstrators CONFIDENTIAL 12.10.2007 Slide 24
  • 25. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Power source: thermal scavenger • Working principle • Seebeck / Peltier effect www.mastersininnovation.com V ~ ΔT • • Specifications & advantages • from 10 µW average up to 1 mW peak • some mm³ • human body: ~10 mW/cm2 • Applications • Motors • Wearables • Cooling / heating devices • Status • technological demonstrators CONFIDENTIAL 12.10.2007 Slide 25
  • 26. © MASTERS IN INNOVATION ® Wireless distributed sensor networks The future: challenges & trends www.mastersininnovation.com • Low power building blocks: sensor, radio, processor • On board intelligence to reduce radio transmission, e.g. triggered by events • Efficient bandwidth use • Long lasting power supply, e.g. energy harvesting • Standardisation / Interoperability • Robust and fault tolerant protocols • Self configuring (dynamic) network configuration • Security / privacy • Synchronisation • Services CONFIDENTIAL 12.10.2007 Slide 26
  • 27. © MASTERS IN INNOVATION ® Wireless distributed sensor networks Conclusion www.mastersininnovation.com • Opportunities for wireless sensor network applications are numerous • However, the enabling technologies are not yet mature • A multi-disciplinary approach and optimization is a key factor for succes • Continued effort in development is critical for gaining maturity CONFIDENTIAL 12.10.2007 Slide 27
  • 28. © MASTERS IN INNOVATION ® Wireless distributed sensor networks www.mastersininnovation.com Verhaert New Products & Services nv Hogenakkerhoekstraat 21 9150 Kruibeke Belgium Tel +32 (0)3 250 19 00 Fax +32 (0)3 254 10 08 www.verhaert.com info@verhaert.com www.mastersininnovation.com CONFIDENTIAL 12.10.2007 Slide 28

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