Embed Size (px)
DESCRIPTION
Data acquisition in euroFOT
Citation preview
www.eurofot-ip.eu
Data acquisition in euroFOT
Jonas Bärgman
Chalmers University of TechnologyTraffic Safety/Accident PreventionGöteborg, Sweden
www.eurofot-ip.eu
Contents
• Illustration of different approaches for Data Acquisition Systems and challenges
• Illustration of data analysis tools and challenges.
• Practical issues to be considered in large scale FOTs.
September 2009 Jonas Bärgman – ITS 2009 - Stockholm
www.eurofot-ip.eu
Project objectives and plans
September 2009 Jonas Bärgman – ITS 2009 - Stockholm
www.eurofot-ip.eu
Definition of Data Acquisition System
• In-Vehicle DAS
• External services – e.g. map/weather
• Questionnaires (subjective data)
• Background data (driver/vehicle)
September 2009 Jonas Bärgman – ITS 2009 - Stockholm
www.eurofot-ip.eu
In-Vehicle DAS in euroFOT
• Different DAS system used at different sites, but with common basic methodology• CAN (vehicle bus) only
• CAN + video + (extra sensing)
September 2009 Jonas Bärgman – ITS 2009 - Stockholm
www.eurofot-ip.eu
Challenges in in-vehicle DAS implementations in euroFOT• Difficult to find appropriate DAS systems for CAN+video• Multiple vehicle bus interfaces needed• Stability of the systems must be very high and require
automotive spec. components (incl. EMC).• Making sure integrity and proprietary issues for data
access are covered • Easy configuration and installation in vehicles
September 2009 Jonas Bärgman – ITS 2009 - Stockholm
www.eurofot-ip.eu
Challenges for data analysis tools in euroFOT• Working with huge amounts of
dataData processing time – database querying and calculationsQuality assurance in analysisDatabase design to allow for multi user analysis and data uploadHow to get an overview
September 2009 Jonas Bärgman – ITS 2009 - Stockholm
www.eurofot-ip.eu
Practical issues in large-scale FOTs
• Vehicles, installation and configuration• Study design that allows for system boundary conditions• Quality assurance of data – definitions and implementation• Wireless data transfer – roaming costs• Handling of vehicle bus information• Consistency and traceability of data and analysis• Data storage implementation – HW/SW• Access rights and multi user handling
September 2009 Jonas Bärgman – ITS 2009 - Stockholm
www.eurofot-ip.eu
Jonas BärgmanChalmers University of Technology/SAFERTraffic Safety/Accident PreventionGöteborg, Sweden
Email: [email protected]
www.eurofot-ip.eu
Jonas BärgmanChalmers University of Technology/SAFERTraffic Safety/Accident PreventionGöteborg, Sweden
Email: [email protected]
