P18418: Vertical Farming
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Integrated System Build & Test

Table of Contents

Team Vision for Integrated System Build & Test Phase

In this phase our goal was to complete all four subsystem upgrades including trays, motor, LEDs, and aeroponics as well as complete and process data from benchtop testing. The motor, tray, and LED subsystem upgrades were completed, and aeroponics will be built when the parts are shipped in. The data from benchtop testing was processed and it was apparent that radishes showed the best growth in the test time and conditions, and the duration of light appeared more important than the amount of light each plant was getting.

Test Results Summary

Benchtop DOE Data Analysis

Throughout MSD II a benchtop experiment was run to define the parameters used in the Surculus (see previous Edge pages for design set up). The experiment was a fourth resolution, full factorial design with one full repeat. The factors included: Vegetable Type, Watts per Plant, Light Exposure Time, and nutrient levels. Response measured include: Days Alive, Number of Leaves, and Max Height. The data was processed in Minitab and the following conclusions were made:
  1. Wattage is a significant factor for plant height
    1. 3W performed better than 4.5W
  2. Number of Days Alive had no significant factors involved

Going forward with this information, it was decided 3W at 16hrs will be implemented in the Surculus. Nutrient levels will follow the guidelines on the bottle, see previous Edge Page for nutrient level information.

Benchtops

Benchtops

Test Bench Plants Before Harvest

Test Bench Plants Before Harvest

Test Benches

Test Benches

The Minitab Analysis and summary found here. The Data Collected is found here.

Engineering Requirements for Surculus Testing

Engineering Requirement Test Results

Engineering Requirement Test Results

The full document with Engineering Requirements, Customer Requirements, and test plans for each requirement can be found here.

Risk and Problem Tracking

Updated Risk Assessment Visual

Updated Risk Assessment Visual

Updated Risk Management document can be found here

Updated Problem Tracking Visual

Updated Problem Tracking Visual

Updated Problem Tracking document can be found here

Subsystem Upgrades

LEDs

Lighting System Diagram

Lighting System Diagram

Lighting System Schematic

Lighting System Schematic

LED Solder Example

LED Solder Example

Cylinder Details

Cylinder Details

The lighting system is fully documented and explained here. From top to bottom, is a diagram notating the different components of the system, the system schematic, an example showing a soldered connection of two LED light strips, and an example of the lighting system along with details.

Trays

Summary of Tray Modification Process:
Tray Drawing

Tray Drawing

Tray Drawing

Tray Drawing

Modified Trays in Surculus

Modified Trays in Surculus

Motor

Summary of Motor Modification:
Motor Schematic

Motor Schematic

Modified Motor in Surculus

Modified Motor in Surculus

Aeroponics & Water Delivery

Summary of Aeroponics Design and Modification
Aeroponics Design

Aeroponics Design

Aeroponics Design

Aeroponics Design

Aeroponics Design

Aeroponics Design

Aeroponics Design

Aeroponics Design

Reservoir:

A detailed drawing set for the Aeroponics design system can be found here

System

System/Subsystem Schematic

System/Subsystem Schematic

BOM and Budget Outlook

Updated BOM

Updated BOM

Updated BOM (Cont.)

Updated BOM (Cont.)

Budget Outlook

Budget Outlook

The updated BOM now includes each part number as well as the vendor and link. We purchased parts for the lighting, aeroponics, and reservoir systems. Comparing the purchases to our proposed budget, we are fairly close to out estimate. We spent less than estimated on aeroponics and the motor system, and slightly more than estimated on the lighting. At the moment, we are about $75 under our projected budget.

Plans for next phase

Project Gantt Chart

Project Gantt Chart

Full Gantt Chart can be found here. Action Items list can be found here.

3 Week Plans:

Action Items from Review


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