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Versatile LiveNode: Advancements in Wireless Sensor Networks for Environmental Monitoring

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kylan-vance
16 diapositives · 283 Views · Nov 01, 2014

The LiveNode system represents a significant advancement in wireless sensor networks (WSNs) through its flexible hardware architecture and efficient LIMOS operating system. Presented at LIMOS UMR 6158 in June 2007, this versatile embedded node addresses challenges in environmental data collection, telemedicine, smart care, and intelligent vehicle communication (IVC). Key features include a 32-bit ARM microcontroller, multiple wireless access mediums (WiFi, ZigBee, GSM), and a diverse array of sensors. Ongoing projects are exploring innovative applications in precision agriculture and healthcare.

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  1. LiveNode: LIMOS versatile embedded wireless sensor node Kun Mean HOU Laboratoire LIMOS UMR 6158 CNRS, Université Blaise Pascal Clermont-Ferrand France 4 June 2007 - NOTERE07

  2. Presentation outline • Introduction • Motivations and Objective • Trend of design and state-of-the art • Key features of LiveNode hardware module • LIMOS: LiveNode operating system • Current LiveNode applications: Environmental data collection, smart care and IVC (MobiPlus project) • Conclusion and ongoing work 4 June 2007 - NOTERE07

  3. Environment Surveillance Telemedicine Communication protocols ...... HW Local Surveillance Kernel Animal Surveillance Vehicles Tracking VLSI Introduction: motivation and objective • WSN requires technologies from different areas: • Computing: • Basic Software: Operating system • Algorithm: Application-specific algorithm • Hardware: Application-specific sensor architecture • Communication: embedded wireless protocol stack • Sensing: ECG sensor, gas sensor (NO2, O3) etc. • Applications: • Smart home, Smart care, Precision agriculture, Intelligent transport system, • Industrial and manufacturing automation, distributed robotics, • Military arena etc. 4 June 2007 - NOTERE07

  4. State-of-the art and design trend • Two main development and design trends: • Off-the-shell design Wireless Sensor node: • µNode, BTnode, TinyNode, EYES, Mica, TmoteSky … • Simple wireless sensor node: temperature, light sensor etc. • Recent wireless node (TmoteSky, iMote …): • 16 or 32 bit microcontroller • Full compliance IEEE802.14.5 standard • Short range (200m). • SoC Wireless Sensor Node. 4 June 2007 - NOTERE07

  5. Motivation • Our main goal is to implement SoC wireless sensor • A more power-full WS enables to: • Explore more complex applications: IVC … • Validate component based concept (hardware and software). • The key constraints of WSN is energy consumption. Low energy consumption is indispensable to implement long life, cost effective, and reliable WS. • Application-specific unified hardware and software approach: • Algorithm: trade-off between complexity, efficiency and resource consumption, • Hardware: component based approach, • Micro-kernel: resource and energy consumption aware, • Network topology and protocol, • Sensing. 4 June 2007 - NOTERE07

  6. LiveNode hardware module Key features of LiveNode: • One AT91SAM7S256 (32 bit RISC ARM7TDMI core) running at 48MHz, • One standard wireless access medium IEEE802.11b (WiFi) or IEEE802.15.4 (ZigBee) connected via a serial port (SPI or RS232), • One standard GSM access medium connected via UART3, • One GPS receiver connected via UART0, • One versatile signal conditioner enable to adapt to different type of sensors such as soil humidity sensor, ECG signal lead, temperature sensor, light sensor etc. • Three 8 bit extension connectors: SPI etc. 2006 2002 1999 4 June 2007 - NOTERE07

  7. LiveNode: Energy Consumption • The LiveNode PCB board is designed to be equipped with different wireless access medium: • Short range LiveZigBeeNode : 70mA (200m) • Long range LiveZigBeeNode : 270mA (1500m) • Short range LiveWiFiNode : 400mA (200m) LiveZigBeeNode 4 June 2007 - NOTERE07 LiveWiFiNode

  8. LiveNode and Component based Component based concept: scalability, fault-tolerance and flexibility. LiveZigBeeNode, LiveWiFiNode and LiveGPRSNode WS SPI bus RS232 Master LiveNode1 Slave0 LiveNode2 Slave1 LiveNode3 I²C bus 4 June 2007 - NOTERE07

  9. LIMOS: LiveNode operating system • Most of the existing wireless sensor nodes run three types of real-time operating systems: one is based on event driven (TinyOS and Contiki), • The second one is based on classical multi-threading (NutOS and MANTIS). • The third one, AmbientOS is based on data centric multi-tasking. • Complex real-time application • Component based concept implementation. 4 June 2007 - NOTERE07

  10. LIMOS: LIghtweight Multi-threading Operating System • Key features of LIMOS: • LIMOS combines the advantages of event driven and multi-threading concept. Thus LIMOS can support a large variety of WSN applications ranging from simple single-task to multi-task hard real-time applications. • LINDA concept: ease implementation of component based concept. 4 June 2007 - NOTERE07

  11. LiveNode platform application: MobiPlus • Presently LiveNode is used as a prototype to experiment three projects in different areas: inter vehicle communication (MobiPlus project), environmental data collection (Net-ADDED European project) and smart care (LiveCare). 4 June 2007 - NOTERE07

  12. LiveNode Application: environmental data collection (precision agriculture) 4 June 2007 - NOTERE07

  13. Smart care: STAR project • STAR Project: • Remote real-time continuous cardiac arrhythmias detection service • Client/Server Architecture 4 June 2007 - NOTERE07

  14. MobiPlus Project Gas Sensor WS Disabled passengers RFID GPS 4 June 2007 - NOTERE07

  15. Conclusion and ongoing work • LiveNode platform is used in different applications: IVC, environmental data collection, smart care etc. The obtained results are satisfied, and meet the application requirement constraints. • LiveNode platform is also used to valid component based concept and evaluate the resource consumption of IVC and smart home/care applications. • In collaboration with other laboratories, we start to implement an SoC WS dedicated to smart home/care: MEM and wireless access medium. 4 June 2007 - NOTERE07

  16. Thank you for your attention! 4 June 2007 - NOTERE07