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Midway Design Review

Midway Design Review. Team 3 Smart Hydroponic Greenhouse December 8, 2016. Advisor: Professor Jackson Michael D’Anna, Samantha de Groot, Maxwell Joyce and Shaun Palmer. Team Members. Michael D’Anna. Samantha de Groot. Maxwell Joyce. Shaun Palmer. The Problem.

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Midway Design Review

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  1. Midway Design Review Team 3 Smart Hydroponic Greenhouse December 8, 2016 Advisor: Professor Jackson Michael D’Anna, Samantha de Groot, Maxwell Joyce and Shaun Palmer

  2. Team Members Michael D’Anna Samantha de Groot Maxwell Joyce Shaun Palmer

  3. The Problem • Widespread access to local produce • Food deserts • Reduce carbon footprint of shipping • For people without the time, space and knowledge to garden

  4. Our Solution: Fully Automated Smart Greenhouse • Array of sensors inside greenhouse • Continuous measurements • Displays information on app • Sensor data used for the water pump and nutrient dispersal control

  5. Block Diagram

  6. Requirements Analysis: Specifications • Automated • Lighting control • Hydroponic watering • Nutrient dispersal • Closed loop system to recycle water • Must fit inside of a studio apartment ~(2’x4’), easily movable • Yield 6 fruiting plants • Reusable • App with simple UI – easy for people to use and learn

  7. Requirements Analysis: Inputs and Outputs • Inputs • Sensor data • Humidity • pH • Temperature • Moisture in growing medium • Plant Database • Outputs • Lighting cycle control • Hydroponic pump control • Nutrient dispersal control • pH dispersal control

  8. MDR Deliverables – from PDR • Hydroponic mock-up • Functional nutrient dispersal system • At least 1 sensor reading to control unit • Lighting interfaced with control unit • Android Application skeleton

  9. MDR Deliverables – Progress • Fully functional hydroponic system and nutrient dispersal system • Two sensors reading to the raspberry pi • Float Sensor • Hygrometer • Interfaced A/D converter • Lighting and pumps interfaced with control unit • Communication with pi over internet, app with menus • Fully assembled greenhouse structure, applied UV film • Potted growing medium mixture

  10. Lighting – Progress (Mike) • Designed relay circuit to control outlets with Pi • Installed UV film on Plexiglas • Wrote code to control timing of lights and hydroponic pumps

  11. Lighting – Moving Forward • Design custom PCB for voltage regulation • Order by 2/10 to account for lead time • Program control unit to integrate lights into finite state machine design (2/24)

  12. Hydroponics – Progress (Shaun)

  13. Hydroponics – Moving Forward • Program control unit to integrate pumps and nutrient/pH regulation into finite state machine design (2/24) • Fabricate a pH regulation system (1/27) • Same exact concept and circuitry from nutrient dispersal • Plant Seeds (2/27)

  14. Sensors – Progress (Sam) Hygrometer, ADC pH Sensor Water Level Float Switch Temperature and Humidity Sensor

  15. Sensors – Moving Forward • Interface pH and temperature/humidity sensors with control unit (2/3) • Use sensor data to control state machine in control unit (2/24) • Exchange sensor data with Max and put it into a format on the application suitable for the user (2/10) • Notifications to fill reservoirs

  16. Control Unit – Progress (Team) • Coded a mini routine to: • Turn on and off lights • Turn on and off each pump • Mix a 20ml shot of nutrients with water • Use float sensor to fill nutrient solution with 2 gal of water • Report hygrometer readings on android application

  17. Control Unit – Moving Forward • Design state machine to model plant cycle from seed to harvest (1/27) • Code state machine in control unit (2/24) • Ensure code can run stably over a long period of time

  18. App – Progress (Max) • Established communication with Pi • Capable of sending sensor data to phone • Simple android application laid out with buttons and menus

  19. App – Moving Forward • Prompt user with questions (1/24) • Use answers to adapt state machine (2/24) • Give user notifications (2/17) • Make website public (after CDR) • Make website into an android web app (12/22)

  20. CDR Deliverables • Design custom voltage regulator PCB • Finish pH control system • Interface the remaining sensors • Complete functionality of android application • Code entire plant cycle state machine from start to finish • Have plants in the process of growing

  21. Demo

  22. Questions?

  23. Price per lb of Heirloom Tomato • 100 days from seed to harvest • Average tomato plant yields 20 lb of tomatoes • Lights are on for an average of 18 hours a day • Results: 3.96 kWH per lb = $0.75 per lb at $0.19 per kWHs

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