Data acquisition in euroFOT

1. www.eurofot-ip.eu
Data acquisition in euroFOT
Jonas Bärgman
Chalmers University of Technology
Traffic Safety/Accident Prevention
Göteborg, Sweden

2. 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

3. www.eurofot-ip.eu
Project objectives and plans
September 2009 Jonas Bärgman – ITS 2009 - Stockholm

4. 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

5. 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

6. 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

7. www.eurofot-ip.eu
Challenges for data analysis tools
in euroFOT
• Working with huge amounts of
data
Data processing time – database
querying and calculations
Quality assurance in analysis
Database design to allow for multi
user analysis and data upload
How to get an overview
September 2009 Jonas Bärgman – ITS 2009 - Stockholm

8. 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

9. www.eurofot-ip.eu
Jonas Bärgman
Chalmers University of Technology/SAFER
Traffic Safety/Accident Prevention
Göteborg, Sweden
Email: jonas.bargman@chalmers.se

10. www.eurofot-ip.eu
Jonas Bärgman
Chalmers University of Technology/SAFER
Traffic Safety/Accident Prevention
Göteborg, Sweden
Email: jonas.bargman@chalmers.se