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ENVIT: Software Tools for Environmental Field Study

ENVIT: Software Tools for Environmental Field Study. Hydrologic Modeling Hardware & Field Equipment User Interface HydroLab Probe GIS / GPS. ENVIT: Hydrologic Modeling Division. Anna Leos-Urbel Kevin Richards Eric Lau. The Hunter River Basin. Water Quality Background.

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ENVIT: Software Tools for Environmental Field Study

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  1. ENVIT:Software Tools for Environmental Field Study Hydrologic Modeling Hardware & Field Equipment User Interface HydroLab Probe GIS / GPS

  2. ENVIT:Hydrologic Modeling Division Anna Leos-Urbel Kevin Richards Eric Lau

  3. The Hunter River Basin

  4. Water Quality Background • November 1991 – 1000km toxic algal bloom along Barwon and Darling rivers in New South Wales • Summers 1991-1993 – non-toxic algal blooms in Grahamstown Reservoir • Australia spends $142-168 million per year on monitoring quality

  5. Main Quality Factors • Turbidity • Salinity • Nutrients (N, P) • Blue-green algae (cyanobacteria) • Fecal Coliform

  6. Strategies • Extensive monitoring • HITS • Hunter Water Corporation • Hunter Salinity Trading Scheme • Contingency plans • Prevention measures

  7. Sampling Locations • Tillegra Dam Site • Chichester Dam • Glen Williams Site • Boags Hill/Seaham Weir Site • Nerrigundah

  8. Sampling Agenda • Turbidity, Conductivity, Chlorophyll-a • Nitrate, nitrite, ammonia • Organo-phosphate • Total Iron • Silica • Cyanobacteria • Fecal Coliform

  9. Assessment Against Guidelines

  10. Expected Range of Results (January)

  11. Average Results (year)

  12. ENVIT:Hardware Division Jamie Brady Trisha McAndrew Laura Rubiano Gomez Advisor: Richard Camilli

  13. Project Description • Protective Cover (GPS/iPAQ/Expansion Pack/Cables) • External battery for HydroLab/iPAQ • Power meter • Flow meter modification • Calibration materials and guidelines for field equipment • Parameters for manual probe GUI

  14. ENVIT Power System

  15. Water-proof Casing • Aquapac • Modified to accommodate cables Power Jack Hydrolab

  16. External Battery Pack • Hydrolab powerpack • DC-DC converter • Connects the system • Power meter

  17. External Battery Pack • Connects iPAQ and HydroLab to power source

  18. Power Meter • Circuit Design • Determine: • Voltages when 95%, 60%, 20% and 10% of power remaining • Use above voltages to find: • Resistor values for R1-R6 • Potentiometer value • Zener diode value • Put circuit board together

  19. R2 R1 1000 12v green R3 P1 1000 amber R4 1000 amber R5 +12v 1000 red Z1 R6 Values for the six resistors (R1-R6)and potentiometer (P1), are based on the voltage reference value chosen for the zener diode (Z1) and assuming an input current range for the operational amplifiers of between 1A and 100A. The op-amp used is a quad-input National Semiconductor LM324. (http://www.national.com/ds/LM/LM124.pdf.) Power Pack Monitor R1 = 169 K R2 = 499 K R3 = 11 K R4 = 11.3 K R5 = 9.09 K R6 = 249 K

  20. ENVIT Power Pack Monitor

  21. Flowmeter

  22. Biology Kit • Parameters: • E. coli • Total Coliform

  23. Spectrophotometer • Figure out how it works! • Determine elements we can test for • Order necessary supplies for tests and calibration

  24. Parameters: Ammonia Nitrate (LR, MR) Nitrite Phosphate Silica Spectrophotometer

  25. Design a waterproof casing for battery Better arrangement of wires coming out from battery pack Larger Aquapac or other protective cover to facilitate removal of iPAQ Future Improvements

  26. ENVIT:User Interface Division Amy Watson Nancy Choi Kim Schwing

  27. ENVITNote • Environmental software application for hand-held, portable computers to be used directly for gathering and storing data (an electronic journal). • Record environmental and geolocational data automatically in the field. • Applications for hydrology sampling, water quality sampling, field mapping (GIS) and positioning (GPS).

  28. The User • Who is the user? • What are the user’s goals?

  29. Graphical User Interface (GUI) “A program interface that takes advantage of the computer’s graphics capabilities to make the program easier to use. Well-designed graphical user interfaces can free the user from learning complex command languages.” (www.pcwebopedia.com)

  30. GUI Group Deliverables • User and Project setup • Control screens • Interaction with database • Computation applications

  31. User Centered Design • “Simple is better” • Programs that flow logically • Understandable format • Standardize functionality

  32. Visual Basic • Microsoft developed programming language and environment. • Based on the BASIC language • Provides a graphical programming environment and a paint metaphor for developing user interfaces. • Do not need to worry about syntax details • Can add code by dragging and dropping controls and then defining their appearance and behavior.

  33. Microsoft eMbedded Visual Tools 3.0 • The Microsoft® eMbedded Visual Tools 3.0 delivers a complete desktop development environment for creating applications and system components for Windows® Powered devices, including the Pocket PC and Handheld PC. • The eMbedded Visual Tools include eMbedded Visual Basic® and eMbedded Visual C++®, including SDKs for the Pocket PC, Palm-size PC, and Handheld PC.

  34. Components of the GUI • Welcome • Login • Instrument Identification • Control Form – tab strip format • Menu Bar Options

  35. ENVITNote Demonstration

  36. ENVIT:HydroLab Probe Division Arthur Fitzmaurice Chrissy Dobson Lisa Walters

  37. Tasks • Provide “black box” of device • Enable serial communication between iPAQ and HydroLab • Enable user to calibrate HydroLab sensors and collect water quality data • Provide user with error and range check

  38. Progression of the Hydrolab GUI • Read HydroLab manual • Developed preliminary list of parameters and units • Researched calibration requirements • Created GUI for calibrating parameters, taking measurements, and displaying data • Developed list of ranges for each parameter and possible errors

  39. Chlorophyll (g/L) Conductivity(mmHg, psia) Salinity (ppt) Specific Conductance (ms/cm) Resistivity (k-cm) Total Dissolved Solids (g/L) Depth(m, ft, psi) Dissolved Oxygen(mg/L, %Sat) pH Temperature(K, F, C) Turbidity(NTU, V) Parameters and Units

  40. When to Calibrate the Sensors • Factory calibrated • Site –specific • Frequency of deployments

  41. How to Calibrate a Sensor Example: Dissolved Oxygen • Select parameter: Dissolved Oxygen • Temperature does not require calibration • Prepare sensor for calibration • Instructions for calibration preparation in user manual • Choose %Sat • Enter barometric pressure (mmHg)

  42. How to Take a Measurement Example: Dissolved Oxygen • Select parameter: Dissolved Oxygen • Select units: % saturation, mg/L • Multiple samples? • Enter sampling time and units (i.e. seconds, minutes, hours, days) • Enter time interval and units

  43. Potential Errors • Hydrolab off or improperly connected • Serial port in use by other application • Battery not attached or not enough power • Parameter called by user not available on specific Hydrolab • Parameter called by user not calibrated • Calibration expired or not available for parameter • Hydrolab data not within valid range • Time interval greater than total sampling time

  44. HydroLab GUI

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