Automated Beverage Dispenser Georgia Institute of Technology April 24, 2009 Katrina Kumm Mike Fojas Mark Peterson Nick White Nick Migliaccio

© Mark Peterson 2009 Overview What, Why, Who, Cost Technical Objectives & Design Goals Top Level Design Hardware Design Software Design Problems & Solutions Acceptance Testing Scheduling & Task Management Budget & Cost Analysis

© Mark Peterson 2009 Dispenser of mixed beverages with automated controls Drinks dispense cost effectively and efficiently Restaurants and bars are the target market Predicted Prototype/Development Cost ≈ $32,304 Actual Prototype/Development Cost = $32,802 Predicted Manufacturing Cost ≈ $1,780 per unit Actual Manufacturing Cost = $2,278 per unit What, Why, Who, Cost

© Mark Peterson 2009 Human machine interface is aesthetically pleasing Containers hold up to 2 liters Pump flow rate of 1 liters per minute Accuracy of +/- 10% Interface unit separate from dispensing unit Containers and I/O controllers are easily accessible Proposed Technical Objectives / Design Goals

© Mark Peterson 2009 Proposed Hardware Diagram

© Mark Peterson 2009 Implemented Hardware Diagram

© Mark Peterson 2009 Control Unit (Overhead, Exterior)

© Mark Peterson 2009 Control Unit (Overhead, Interior)

© Mark Peterson 2009 Control Unit (Side View)

© Mark Peterson 2009 Control Unit (Side View)

© Mark Peterson 2009 Relay Circuit

© Mark Peterson 2009 Dispensing Unit (Overhead View)

© Mark Peterson 2009 Dispensing Unit (Side View)

© Mark Peterson 2009 Pump Unit (Overhead View)

© Mark Peterson 2009 Pump Unit (Front/Rear View)

© Mark Peterson 2009 Pump Unit (Side View)

© Mark Peterson 2009 Software Structure Diagram HMI (Visualization Components*) Load (control.c) Save (control.c) Add (control.c) Make (control.c) Setup (control.c) *Note: Visualization Components is a proprietary data- type of B&R’s Automation Studio.

© Mark Peterson 2009 Welcome / Startup Welcome / Startup Main Menu Display Liquids Display Liquids Add Recipe To DB Add Recipe To DB Add Liquid To DB Add Liquid To DB Display Recipes Display Recipes Setup Next Button Next Button Make Drink Button Make Drink Button Back Button Back Button Home Button Home Button Help Screen Help Screen Help Button Add Liquid Button Add Liquid Button Display Liquids Button Display Liquids Button Display Recipes Button Display Recipes Button Setup Button Setup Button Add Recipe Button Add Recipe Button Save Button Save Button View Recipe (Details) View Recipe (Details) Recipe Selected Recipe Selected Signal To Controller Signal To Controller Signal From Controller Signal From Controller Remove Button Remove Button * Located on every screen * * Shutdown Screen Shutdown Screen Off Button * View Liquid (Details) View Liquid (Details) Liquid Selected Liquid Selected Proposed Software Flow Diagram

© Mark Peterson 2009 Make Welcome / Startup Welcome / Startup Home View Recipe List View Recipe List View Liquid List View Liquid List Add Liquid Add Liquid Add Recipe Add Recipe Setup Home Button Home Button Add Liquid Button Add Liquid Button View Liquids Button View Liquids Button View Recipes Button View Recipes Button Setup Button Setup Button Add Recipe Button Add Recipe Button Save Signals To Controller Signals To Controller * Located on every screen * Liquid Selected Liquid Selected Implemented Software Flow Diagram Recipe Selected Recipe Selected Confirm Delete Confirm Delete Confirm Delete Confirm Delete View Liquid View Liquid Back Next Delete Edit View Recipe View Recipe Back Next Delete Shutdown Screen Shutdown Screen * Confirm Shutdown Confirm Shutdown Off Help Layer Help Layer * Help

© Mark Peterson 2009 Solutions to Problems/Design Issues 1.Difficulty finding alcohol grade pumps ▫Found alcohol pump distributor ▫Purchased aquarium pumps 2.Adding/removing liquids from dispenser ▫Write software and add on hardware ▫Handled in ‘Setup’ screen and software logic 3.Liquid level tracking ▫Based on weight ▫Monitored by software ▫Feedback from flow meter 4.Water leakage ▫Silicon and then added hot glue 5.Inadequate power supply ▫Purchased new 24 V, 7.2 A power supply ▫Ran pumps in succession

© Mark Peterson 2009 Human Machine Interface (HMI) is navigable Pumps dispense specified volume +/- 10% Make and dispense a 12oz drink in under 30 seconds Proposed Acceptance Testing

© Mark Peterson 2009 “How did the demonstration go?” Acceptance Testing Results

© Mark Peterson 2009 Schedule and Milestones PlannedActual Make stand (3/12)Make stand (3/24) Obtain pumps (3/16)Obtain pumps (3/25) Test interface (3/12 – 3/24)Test interface (3/19 – 4/23) Test pumps (3/23 – 3/30)Test pumps (4/7 – 4/17) Software complete (4/6)Software complete (4/23) Hardware complete (4/6)Hardware complete (4/23) Test ABD (4/13)Test ABD (4/20) Final Presentation (4/20)Final Presentation (4/24)

© Mark Peterson 2009 Explanation for Schedule Delays Make Stand (~12 days late) Artificial deadline Obtain Pumps (~9 days late) Alcohol grade pumps were stuck in customs for ~1.5 weeks Test Interface (~1 month over) Issues with logic and interface usability Pump Testing (~14 days late) Residual delay from first pump acquisition Software Completion (~17 days late) Continuous software modifications until last night Hardware Completion (~17 days late) Other delays prevented completion Test ABD (~7 days late) Other delays prevented final testing phase

© Mark Peterson 2009 Proposed Budget and Cost Analysis

© Mark Peterson 2009 Actual Budget and Cost Analysis

© Mark Peterson 2009 Summary What, Why, Who, Cost Technical Objectives & Design Goals Top Level Design Hardware Design Software Design Problems & Solutions Acceptance Testing Scheduling & Task Management Budget & Cost Analysis

Questions?