GPS for Interactive Traffic Analysis af Kristian Torp, AAU
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GPS for Interactive Traffic Analysis af Kristian Torp, AAU

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Oplægget blev holdt ved InfinIT-arrangementet Big Data og data-intensive systemer i Danmark, der blev af holdt en 15. januar 2014. Læs mere om arrangementet her: ...

Oplægget blev holdt ved InfinIT-arrangementet Big Data og data-intensive systemer i Danmark, der blev af holdt en 15. januar 2014. Læs mere om arrangementet her: http://infinit.dk/dk/arrangementer/tidligere_arrangementer/big_data_i_danmark.htm

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    GPS for Interactive Traffic Analysis af Kristian Torp, AAU GPS for Interactive Traffic Analysis af Kristian Torp, AAU Presentation Transcript

    • GPS FOR INTERACTIVE TRAFFIC ANALYSIS Kristian Torp Department of Computer Science Aalborg University, Denmark torp@cs.aau.dk
    • Outline • Technical part    Data foundation Software architecture Data-warehouse design • Traffic-analysis part     Congestion and speed maps Eco routing (fastest versus most fuel-efficient route) Path analysis (routes taken between points A and B) Trip analysis (where from and where to) • Questions and answers InfinIT 2014-01-15 2
    • Overall Idea Travel-time Map Digital Map Congestion Map GPS Data CANBus Data ITS Software Eco Routing Path Analysis POI Trip Analysis … Input … InfinIT 2014-01-15 Output 3
    • GPS and CANBus Data id 1 2 3 4 5 id 1 2 3 4 5 Veh id 42 42 42 42 42 Lat 57.0 57.0 57.0 57.0 57.0 Long 9.9 9.9 9.9 9.9 9.9 Time 12:00:00 12:00:01 12:00:02 12:00:03 12:00:04 Velocity 80 80 70 75 80 Veh. id Fuel Breaks Temp. RPM GPS data 42 123 0 90 1400 … 42 120 0 91 1424 … 42 90 40 90 850 … 42 12 80 90 850 … 42 239 9 90 2299 … InfinIT 2014-01-15 4
    • Statistics • ~2.5 billion GPS observations   +80 % of road network ~1.8 million GPS observations daily • ~250 million CANBus/OBD/FMS observations   12 % of road network ~0.5 million CANBus observations daily • +14.000 vehicles in total  ~3.000 vehicles daily (roughly half in weekends) • Data warehouse updated nightly  Used for payment of taxi drivers • Not really “big data”   Compensate by small hardware budget  Big enough! InfinIT 2014-01-15 5
    • Software Architecture Project-specific Code pygrametl Project-generic Code Psycopg PostgreSQL 9.3/ Postgis 2.1 NetworkX M-GEMMA Python 3.3 64 bit Operating System InfinIT 2014-01-15 6
    • Data Warehouse Design Vehicle Data Source Batch Load Positioning Data Date Time InfinIT 2014-01-15 Attributes 7
    • Overall ETL Data Flow trip GPS Data Map-match insert trip-fact data-fact point Phase 1 Phase 2 InfinIT 2014-01-15 point-fact Phase 3 8
    • Speed and Congestion Maps Congestion • Maps covers all of Denmark InfinIT 2014-01-15 9
    • Køer i Jylland? InfinIT 2014-01-15 10
    • Køer i Jylland? Randers Vej, Aarhus Limfjordstunnel InfinIT 2014-01-15 11
    • Eco-routing: Airport - AAU CPH Fuel Fastest 13:57 10:51 7.44 km. 9.11 km. InfinIT 2014-01-15 0.74 l. 0.83 l. 12
    • Eco-routing: Airport – Railway Station Best Worse 17:08 18:06 8.06 km. 0.80 l. 13.64 km. 1.23 l. InfinIT 2014-01-15 13
    • Køge Bugt – Ring 3: 15:00 – 18:00 12 trips 761 secs 18.4 km 122 trips 669 secs 17.3 km 125 trips 655 secs 16.7 km • 3 different routes InfinIT 2014-01-15 14
    • Køge Bugt – Ring 3: 7:00 – 9:00 JUG? 18 trips 709 secs 17.3 km 96 trips 815 secs 16.7 km • 11 different routes InfinIT 2014-01-15 15
    • Helsingørmotorvejen 7:00 – 9:00? 37 % 20 % 37 % • 855 trips InfinIT 2014-01-15 16
    • Køge Bugt: Where to 7:00 – 9:00? • 893 trips InfinIT 2014-01-15 17
    • Køge Bugt: Where from 7:00 – 9:00? • 893 trips InfinIT 2014-01-15 18
    • Summary • Traffic is a great application for spatio-temporal data  Daisy’s “core business” for many years • Many applications of GPS data     Congestion and speed maps Route-choice/path analysis Eco-routing Intersection analysis using trips • Fuel consumption from CANBus data   Interest for fleet owners Green mobility • 1NF is not dead   1NF+SQL SQL is a pretty good query language Parallel data processing a necessity InfinIT 2014-01-15 19
    • Additional Information • http://daisy.aau.dk/its • http://daisy.aau.dk/its/spqdemo • Benjamin out-front doing demos InfinIT 2014-01-15 20