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Networked Environmental Measurement Observer

ERAU RET 2012. NEMO. Chris Hockley & Chris Sammet. Networked Environmental Measurement Observer. Dr. Patrick Currier. Stephanie Quintero & Chris Stefancik. What is the purpose of NEMO?. Aid researchers in monitoring the health of an aquatic eco-system by measuring water quality.

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Networked Environmental Measurement Observer

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  1. ERAU RET 2012 NEMO Chris Hockley & Chris Sammet Networked Environmental Measurement Observer Dr. Patrick Currier Stephanie Quintero & Chris Stefancik

  2. What is the purpose of NEMO? • Aid researchers in monitoring the health of an aquatic eco-system by measuring water quality. • Data will be stored onboard NEMO using an SD card and send along wireless communication Stephanie Quintero & Chris Stefancik

  3. What will NEMO measure? • Water salinity • pH level • Water temperature • Turbidity • Chlorophyll concentration • Atmospheric temperature and pressure • GPS location Stephanie Quintero & Chris Stefancik

  4. What makes NEMO so special? • Size • Price • “Off-the-shelf” parts • Nearest product similar is approx. $40,000 • Data collection is autonomous • Ability to be used in conjunction with other AUVs • Possibility of connecting several together wirelessly to form a mesh-sensor-network • Durable(Trans-Atlantic?) Stephanie Quintero & Chris Stefancik

  5. What can our students learn from NEMO? • The Science behind data collection • Properties of light, compounds, and mixtures • The Technology that enables this sensor array • Electronics, communications, programing languages… • The Engineering that puts it all together • Size, construction materials, delivery methods… • The Math that allows students to analyze the data • Statistics, graphing, GIS modeling… Stephanie Quintero & Chris Stefancik

  6. Module 1 – “The light that Unites” By Chris Stefancik

  7. Module 1 Overview Hey aphid, why are plants green? Duh! They absorb all other colors and reflect green back. Yeah… but why are they green? Stephanie Quintero & Chris Stefancik

  8. Module 1 Overview (Cont’d) • It turns out there is a very complicated answer involving: • a lot of conjugated double bonds • a charge transfer complex with a magnesium ion • a band gap energy between LUMO-HOMO LCAOs • A formation of either a bonding or antibonding node • It also turns out that “Why are plants green?” isn’t the right question… Stephanie Quintero & Chris Stefancik

  9. Why do plants HAVE to be green? absorbed Decreasing energy ∆E emitted Stephanie Quintero & Chris Stefancik

  10. Module 1 Overview (Cont’d) • Chlorophyll has very specific wavelengths of light for absorption and emission. • We can “trick” it to search for and quantify it… NEMO’s Plastic Case NEMO’s Chlorophyll Sensor Photoresistor ~650 nm UV LED ~405 nm Stephanie Quintero & Chris Stefancik Measure the change in Voltage

  11. A Live Demo • …

  12. Module 1: Diluting Solutions By Stephanie Quintero

  13. Module 1 Overview • How do you dilute a stock solution? • This unit begins with a PowerPoint and fill in the blank notes • Chalk on the Desk Practice • In-class activity to help practice solving dilution problems using the formula (M1V1=M2V2). Stephanie Quintero & Chris Stefancik

  14. Module 1 Overview Continued • How can we apply the concept of solutions? • Serial Dilutions Lab • Students will create a serial dilution and then test their accuracy using a conductivity probe. • Extension Activity • Instructions to have students bring in their own water samples from home and do conductivity testing. Discussion prompts are included. Stephanie Quintero & Chris Stefancik

  15. Module 2: pH By Stephanie Quintero

  16. Module 2 Overview • What is the pH scale actually measuring? • Equilibrium Constant of Water • PowerPoint with Fill in the Blank Notes • Modeling with Marshmallows Activity • Practice Problems Stephanie Quintero & Chris Stefancik Stephanie Quintero & Chris Stefancik

  17. Module 2 Overview Continued • How do you calculate pH? • Self Guided Notes • Whole class examples • Practice Problems • pH Practice on the Line Activity Stephanie Quintero & Chris Stefancik

  18. Module 2 Overview Continued • How is pH applied? What meaningful scientific conclusions can be drawn? • What is a pH Probe? • Guided Reading and Web Quest • Water Quality Monitoring • Lab which is ideal for a field trip. Students compare data collected via probe ware and via traditional water sampling methods. Stephanie Quintero & Chris Stefancik

  19. Acknowledgements • Special thanks to Chris Hockley and Chris Sammet Stephanie Quintero & Chris Stefancik

  20. Any Questions?

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