Walder_Presentation_IDRC2010_Davos.ppt

International Disaster and Risk Conference Davos 2010

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U. Walder, T. Bernoulli, T. Wießflecker,

Institute for Building InformaticsGraz University of Technology

An Indoor Navigation System for Improved Action Force Command and Disaster Management

International Disaster and Risk ConferenceDavos 2010


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Content

• Information Needs in Disaster Management (DM)

• TU Graz Computer Aided Disaster Management System

– Indoor positioning

– Context-adaptive building model (BIM), Mapping

– User interaction (BIC)

– System architecture und communication

• Conclusions


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Why do we need Indoor Navigation and Positioning in DM?

Disaster Management• Real-time information about the situation of enclosed people,

affected areas and the deployed teams is needed!

Urban Development• Higher density ► large roofed areas ► underground infrastructure

• High vulnerability against fire, flood and terror

Motivation


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Traditional Indoor Positioning Systems

• Based on preinstalled infrastructure– HS-GNSS (GPS)

– Wireless LAN

– Ultra Wide Band

– RFID

– Cameras

Many disadvantages:• Either not possible (GPS),• too expensive,• too time-consuming or• not accurate enough

Better solution withDead Reckoning System

State of the Art


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TU Graz IPS – what is it?Positioning Equipment for Deployment ForcesHardware inertial measurement unit

lightweight wearable computerhead mounted display

Software motion pattern analysis intelligent sensor-map interaction

hands free, intuitive user interaction

IPS is the core of a Disaster Management SystemCommand StationHardware computer / notebookNetwork WLAN or UMTSSoftware operation command and control system

State of the Art


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Inertialsystems (Dead Reckoning Systems)

• Positioning by integrating accelerations and velocities with permanent movement pattern analysis

• Many problems have to be solved:

– Noise

– Drift stable average

– Temperature

– Calibration

– Accuracy

– Zero Velocity Updates for different movement patterns

IPS


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Inertial systems: experiences

• Accuracy too bad for stand alone solution

• Improvement by periodic re-positioning:

– Re-positioning relative to known boundaries and reference objects

– User interaction to verify automatic re-positioning or to define new start point

• Problems to solve:

– Mapping with floor plans

– Floor plans have to be enriched with logic information

– User interaction under extreme conditions (noise, smoke, heavy equipment, manual work, etc.).

IPS


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Context-sensitive BIM interaction

• Graphical data are available for all major buildings (evacuation planning) in standard formats

• Important information in case of disasters have been defined and are integrated in the building model data

Building Information Model (BIM)


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Typical Results


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Typical Results


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Typical Results


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Typical Results


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Position control

• Catching functions

– Doors and other transitions

– Stairs

• Reflecting functions

– Walls, doors

• Correction functions

– Re-positioning relative to objects

• Reloading functions

– Floor plans

– Neighbor floors

Automatic re-positioning

re-positioning by user interaction


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System architecture


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Peer-to-Peer as key technology

• The use of JavaTM implemented Peer-to-Peer (p2p) mechanisms allows for a flexible integration of different hardware and systems

• The network organises itself:

– High flexibility in changing network configurations, in case of interrupts and device damages

– Optimisation during operation is possible

Communication


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Range of Application

• First Responders

• Military und Special Forces

• Civil applications

– Pedestrian navigation in public buildings, airports, hospitals, shopping centres, railway and subway stations, , museums, etc.

– Navigation for handicapped people


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TU Graz Indoor Positioning System

System benefits

1. No installations in buildings necessary

2. High positioning accuracy (< 2 m)

3. Small and handy system (foot or hip mounted)

4. Maps can easily be derived from floor plans

5. Autonomous operation in case of transmission

interrupts

6. Great potential for civil applications

Conclusions


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Acknowledgements

armasuisse


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Thank you for your attention!

Walder_Presentation_IDRC2010_Davos.ppt

Technology

Transcript of Walder_Presentation_IDRC2010_Davos.ppt