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Air pollution @ EcoHackSF

Air pollution @ EcoHackSF

EcoHackSF

May 09, 2014
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  1. How is it Quantified? US EPA uses 5 major pollutants

    to calculate Air Quality Index (rough threshold measurements shown) ! • Carbon Monoxide (CO) (9 ppM) • Nitrogen Dioxide (NO2) (52 ppB) • Sulfur Dioxide (SO2) (75 ppB) • Ozone (O3) (0.75 ppM) • Particulate (PM 2.5/10) (12/150 ug/m3)
  2. Resolution Problem • Roughly 4000 active monitoring stations active around

    the USA ! • Average 1 per 1000 miles2 ! • Pollutants such as CO and NO2 can vary widely on the order of meters
  3. Improving Resolution • More Sensors? – Cheaper – Easier to

    Install • Moving Sensors? – Track GPS Coordinates – How/Where to go? • Issues of Reliability (Data Quality)
  4. Who’s Involved • Everyone • Hobbyist/DIY • Grassroots ORGs •

    Universities/Research Institutes • Local Gov’t • Private/Corporations • Federal Gov’t
  5. Sensor Examples • Arduino/DIY • Commercial/Industrial Sensors • Gov’t/Scientific Sensors

    ! • Cheap sensors typically for short-term danger levels • Better sensors can track long-term health risks
  6. Mobile Applications • Location Services Integrated (varying quality) • Short-term

    storage • Initial filtering/analysis • Uplink to servers • Real-time feedback • Control sensor settings • Ubiquitous
  7. Database Examples • Xively • ManyData • ThingSpeak • ….

    • EPA AirData • BAAQMD • …. • AWS • Your own server
  8. Analysis/Presentation • Google Maps • Open Street Map • Various

    GIS systems/protocols • Twitter • Alarm system • Print • ….
  9. Sensor • Lots of sensors out there – all with

    different performance • Why start with CO? – High concentrations – Can vary widely by location – Immediate & long term toxic effects
  10. Mobile Data Collection • Recording Data – Header – Long/Lat

    Coordinates – Time Stamp – Values • Recording Recording Devices – UUID – Calibration Data – Phone serial # and GPS data • Processing on mobile – Filter bad data – Upload in different formats for different servers