smart citizens - water sensor demo
TRANSCRIPT
Water sensor demoMay 12, 2016Rio de Janeiro
#ResilientRio
Thursday - Water
Time Topic / Activity
10:00 – 11:00 Kick off water sensors day
11:00 – 13:00 Building sensors
13:00 – 14:00 Lunch break
14:00 – 16:00 Field work
16:00 – 17:00 Team updates
Water & Rio
https://en.wikipedia.org/wiki/Copacabana,_Rio_de_Janeiro#/media/File:Rio_de_janeiro_copacabana_beach_2010.JPG
Google “Water Rio de Janeiro”
Plenty of water around
Time Topic / Activity
10:00 – 11:00 Kick off sound sensors day
11:00 – 13:00 Building sensors
13:00 – 14:00 Lunch break
14:00 – 16:00 Field work / Tech support
16:00 – 17:00 Team updates
Tech Support Pieter Taco
14:00 - 14:30 Slot 1 Slot 1
14:45 - 15:15 Slot 2 Slot 2
15:30 - 15:45 Slot 3 Slot 3
Parameters of water• Turbidity / Transparency• Color• Acidity • Temperature• Dissolved oxygen content• Nutrients• Presence of fecal coliform bacteria
• Ammonia• Toxic metals
Turbidity - Secchi disk
https://en.wikipedia.org/wiki/Secchi_disk
Lake Tahoe
Color
Forel-Ule colour
Measure at 1/2 secchi depth
http://dspace.library.uu.nl/handle/1874/212589
Forel-Uil scale• 1 - 5 Indigo blue to greenish blue
• Low nutrient levels, low biomass, phytoplankton
• 6-9 Greenish blue to bluish green• Algae + dissovled matter & sediment• Typical near open sea
• 10 - 13 Greenish• Coastal water with increased nutrients & algae• Contains minerals and dissolved organic material
• 14 - 17 Greenish brown to brownish green• High nutrient and algae concentrations• Typical near-shore
• 18 - 21 Brownish green to cola brown• Extremely high acid concentration, typical for rivers
• Measure pH• Can indicate industrial discharges
Acidity
pH February 2005
http://www.constantinealexander.net/climate-change/page/28/
• Affects water chemistry and aquatic life
• Can be caused by power plants or industrial manufacturers using water as a coolant.
Temperature
Sea water surface temperature
https://en.wikipedia.org/wiki/Sea
Anomalies
• Amount of oxygen available for aquatic life to breathe
• Can be affected by water temperature, flow rate, or presence of pollution.
Oxygen
Global Oxygen Levels
http://www.constantinealexander.net/climate-change/page/28/
• Needed for healthy water life
• Can be harmful if they exceed a certain concentration.
• For example, excessive nitrogen or phosphorous can indicate pollution from fertilizer runoff.
Nutrients
• From failing septic systems, inadequately managed animal waste, or inadequately treated sewage
• Indicator of bacterial presence• poses a threat to human health.
• Ammonia can also be present due to water polluted with domestic sewage.
Bacteria
http://oasisdesign.net/water/quality/testing.htm
• Near mines• test levels of mercury and other
heavy metals.
Toxic metals
A) CollectB) Dissolve in baby oilC) Dilute / Measure
Oil
https://publiclab.org/wiki/oil-testing-kit
Sensors
Water quality sensors
Temperature Temperature
Biodiversity Kite Mapping
Water quality sensors
Oxygen
WheeStat
Oil
Bio fluorescence
DIY Devices
Microscope SpectrometerSpectrometer
Photospectrometer
https://github.com/BioHackAcademy/BHA_Webcam_Spectrophotometer
Inside
• Day light
Spectrum
Spectral Workbench analysis
https://spectralworkbench.org
Artificial light
PublicLab
CCD Array Spectrometer
https://github.com/BioHackAcademy/BHA_Spectrophotometer
CCD array
• 400 nm to 900 nm target wavelength range
• d = grating 0.001 mm / line• lambda = wavelength• phi = diffraction angle• m = order of diffraction = 1
• 400 nm: phi = 23.58 degrees• 900 nm phi = 64.16 degrees
Calibration
Webcam Microscope
https://github.com/BioHackAcademy/BHA_Webcam_Microscope
Spirulina by webcam microscope
DemonstrationWheeStat & Fluorescence
• Calibrate with salt
WheeStat
https://publiclab.org/wiki/wheestat-user-s-manual
Electron affinity
Fluorescence
http://www.citclops.eu/fluorescence-/measuring-water-fluorescence
Fluorescence
Smart Citizen cloud
Smart Citizen
AttitudeTools
KnowledgeSkills
City
Goals
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