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FPR 2011 – Team Gong

FPR 2011 – Team Gong. Presentation by: Andrew Frieden Matthew Weydt Nick Setzer Tyler Dunn. Presentation Overview. General Project Overview Changes from CDR Regression Equations Calibration and Testing Cost Demo. General Project Overview. Our project has three main stages:

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FPR 2011 – Team Gong

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  1. FPR 2011 – Team Gong Presentation by: Andrew Frieden Matthew Weydt Nick Setzer Tyler Dunn

  2. Presentation Overview • General Project Overview • Changes from CDR • Regression Equations • Calibration and Testing • Cost • Demo

  3. General Project Overview • Our project has three main stages: • First, our microcontroller uses multiplexers to take many analog samples from our spectral radiation sensors. These sensor values get passed through a calibration function so that they accurately describe the current irradiance. • Next, our microcontroller passes the values to a GPRS transmitter which creates a TCP packet and sends it to a page that populates our database of sensor values. • Lastly, our python application reads our sensor values off the server and does a bilinear interpolation on the values to find the best potential value on the sensor sphere. It then calculates useful output like money and power saved.

  4. Changes From CDR • Interpolation code is now server side instead of on an android application. The android application was thrown out by a group decision after CDR feedback • We created a multiplatform application (Windows/Linux/Mac) in Python that does all the data processing and has a simply GUI for useful output

  5. Regression and Calibration Equations • We used a one point equation to match the reading from each of the sensors (first step of calibration) • Mapped sensor readings to irradiance provided by weather.cs.umass.edu • Money Saved= (Electricity price/KwH)*[(Irradiance/Standard Testing Conditions) *(Expected System Output in Watts) *(Inverter Efficiency)]/1000

  6. Empirical Data from s4 Device *Approximately 650 data points per row

  7. Calibrated Measurements to Irradiance

  8. Cost • Total Spent: 565 • Actual Cost • Transmitter – $60 • Stalker Board – $50 • Sensors – $40 • Misc. - $20_________ • Total - $170 • Estimated Production Cost:~$50

  9. Demo • Periodic Wakeup/Sleep • Sensor Readings • Save and Read to/from SD card • GPRS transmission • Server processing • End user application

  10. Project Management • Andrew Frieden, CSE: • Embedded System Programming • Money saving, power saving and direction of optimal solar panel algorithms • Web Designer • Matthew Weydt, CSE: • PHP Web Server development • MySql Server development • GPRS programming • Nick Setzer, EE: • Solar panel step down converter • Power supply system • Python Application • Tyler Dunn, EE: • Sensor testing and Integration • Device construction • Power system testing • Assist Arduino and GPRS programming

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