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Live E! Project Multi-Domain Sensor Networking

The Live.E! Project is an ambitious research initiative focused on internet-based sensor networking across multiple domains and organizations. This global-scale project aims to aggregate sensor readings, leveraging a network of 10 server nodes and over 100 weather sensor nodes to create a comprehensive data platform. It serves as a testbed for various applications, including disaster management and business model trials, and archivally retains data for up to three years. Key components include interfacing, data semantics, and addressing interoperability issues across diverse operational environments.

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Live E! Project Multi-Domain Sensor Networking

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  1. Live E! ProjectMulti-Domain Sensor Networking Live E! Tech. WG

  2. Outline • Live E! Project • Overview • Deployment Status • Interfaces and Data Expressions • Interface • Data Structure • Example • Multi-Domain and Interoperability Issues • Application Protocol Level Interoperability • Data Semantics Level Interoperability

  3. What is Live E! project ?? • A research project for Internet-based sensor networking • Multi-domain (multiple-organizations) • Global-scale (sensor data on the Earth) • A data platform of sensor readings • 10 server nodes • 100 working weather sensor nodes • Data archive (for 3 years) • A testbed for sensor applications • Disaster management application • Business model trial • ...

  4. Live E! System Architecture Science Global Warming / Heat island Disaster Management Facility Management Education Agriculture Live E! Application Live E! Data Platform Sensor

  5. Live E! Internet Weather Station Temperature, Humidity, Air Pressure RainFall, Wind Speed/Direction SOAP/XML CPU: ARM 200MHz OS: Linux

  6. Live E! Multi-Domain Sensor Systemsover the Internet User Applications 1. Organization A, B, C 2. Server deployment & Link configuration 3. Management 4. Request from user applications 5. Iterative search lookup request: lookup response: Organization A API Live E! server ① Access ② API API ③ Live E! server Live E! server ④ ⑤ ⑥ Profile Organization C Organization B Sensor

  7. Live E! Sensor Deployment StatusIn Dec. 2008

  8. Live E! Server Operating Status International: Chinese Taipei: Taiwan Network Information Center (TWNIC) National I-lan University (NIU) Thailand: Prince of Songkla University (PSU) Loei Rajabhat University (LRU) In Japan: The University of Tokyo Keio University Nara Institute of Science and Tech. Hiroshima-City University Tottori-Environmental University

  9. Dense Deployment Area (Testbed)Kurashiki-city, Okayama, JAPAN Disaster Management Application Rain Detection and Notification Business Application Analysis of Correlation as a Basic Research About 30 sensor nodes in 25km × 25km

  10. Outline • Live E! Project • Overview • Deployment Status • Interfaces and Data Expressions • Interface • Data Structure • Example • Multi-Domain and Interoperability Issues • Application Protocol Level Interoperability • Data Semantics Level Interoperability

  11. Live E! Interface and Data Format Live E! Applications Data Retrieval I/F FETCH Interface - Applications call for the data SOAP/XML Live E! Service Profile Registration I/F Data Upload I/F SOAP/XML or Console SOAP/XML PUSH Interface - Periodically: 10[sec]～10[min] (*) Data upload from sensors behind FW / NAT location: Tokyo sensorModel: WM918 Sensor Profile

  12. Live E! Sensor Nodes Temperature RainRall combined WindDir Humidity Pressure WindSpeed element Vaisala WXT510 <sensorGroup class=“combined” id=“...”> <sensor id=“...” type=“Temperature” /> <sensor id=“...” type=“Humidity” /> <sensor id=“...” type=“Pressure” /> <sensor id=“...” type=“RainFall” /> <sensor id=“...” type=“WindDir” /> <sensor id=“...” type=“WindSpeed” /> </sensorGroup> id: unique character string

  13. The Structure of Sensor Object Combined Sensor latitude=“35.5” Weather Station longitude=“120.3” vendor=“...” Combined Sensor Attribute Element Sensor Attribute Sensor Profile Unit type=“Temperature” Data Upload / Retrieval Unit T H P R Element Sensor type=“Humidity” Element Sensor Attribute The definition of attributes, which is managed by a profile schema in the system global, can be flexibly changed depending on the target environment. Value time=“2009-02...” error=“overflow” 25.0 25.5 Value Attribute 25.2

  14. Profile Registration and Data Upload Live E! server Profile Registration Sensor Profile Data Upload GW s1 s2 s3 *) Attributes should include ID, BuildNo., RoomNo., PointName, Latitude, Longitude, Class, Type, SamplingFreq. MeasurementUnit, DataType(e.g., scalar/radius/string), and any other properties. s4 s5 A System Operator A Sensor System

  15. Data Sharing PlatformProfile Sharing for Sensor Lookup Operator / User Profile Profile Profile Lookup Lookup Lookup Data Data Data Search Plane Data Plane DB DB DB Sensors Domain A Domain B Domain C

  16. Outline • Live E! Project • Overview • Deployment Status • Interfaces and Data Expressions • Interface • Data Structure • Example • Multi-Domain and Interoperability Issues • Application Protocol Level Interoperability • Data Semantics Level Interoperability

  17. Two Types of Interoperability • Application Protocol (L7) level interoperability can be achieved by making the protocol standard. • Semantics level interoperability management are always needed. Located in Tokyo Deployed Outside Data Semantics Level Interoperability for Temperature Application Protocol (L7) Level Interoperability

  18. Data Semantics Level Interoperabilitiy& Application Protocol Level Interoperability Operator / User Profile Profile Profile Lookup Lookup Lookup Data Semantics Level Interoperability Data Data Data Search Plane Data Plane DB DB DB Application Protocol Level Interoperability Sensors Domain A Domain B Domain C

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