Final Presentation Ivan Tam Lindsay Tabas Katrina Rhoads

Final Presentation Ivan Tam Lindsay Tabas Katrina Rhoads John Mark Josling

Problem Statement & Goals Goal: To develop an interface for facility managers to control and monitor a building’s entire wirelesscontrolled lighting system. Key Functionality: – Monitor energy usage – Control the lighting at various levels of granularity – Provide notice of lighting failures

Personas Tomas Cupertino, 51 Facilities Manager • • (Primary User) Texan with a big, loving family Good at his job, but no high school degree Basic computer skills – email, Word & web forms Main Goal: To deal with maintenance issues in a timely manner Dan Mason, 46 Physical Plant Utilities Manager • • Divorced, father of two Pays campus wide utility bills Works on automating energy usage with motion sensors and the like. Main Goal: To reduce energy usage

Scenarios Scenario 1: It was a long weekend and Tomas needs to check for new lighting problems that occurred over the weekend. Scenario 2: The museum is having a special showing this week and Tomas would like to keep the lights in a select number of rooms on 2 hours later than usual. Scenario 3: New energy-saving devices have been installed last week and Dan wants to check on the actual energy savings.

First Interactive Prototype • Tools: HTML & Java. Script • Improvements: Scheduling & Grouping • Limitations: • No saved state • IE only • Energy graphing & scheduling wizard incomplete • Heuristic Evaluation: Reveals minor violations and leads to some major redesigns

Heuristic Evaluation Results • Lighting Problems Page: • Icons are unclear • Listing of fixed lights and broken lights together is confusing • Mapping between problem list and visual display is difficult • ON/OFF Page: On/Off buttons not visually distinct • Schedule Lights Page: No way to cancel or exit when editing a schedule • What Lights Are On Page: Grouped with dissimilar pages • Overall: Inconsistent interaction with floor plans

Changes Made: Navigation • Moved “What Lights Are On” to under the “Energy Usage” category

Scheduling Page • • • New Schedule wizard Mouse-over effects Delete button becomes Cancel during editing Increased size of the Save button Schedule names editable

Changes Made: Scheduling Previous Stack New Schedule Wizard

Changes Made: Lighting Failures • • • Fixed lights removed from list New status: Reported/Unreported Flags replace icons Additional ways to mark a problem as reported Call-out window for notes and details Brushing & linking to connect problems list to floor plan

Changes Made: Lighting Failures Icons with no mapping from list to visual display Brushing & linking with flags

Changes Made: Energy Graph • • Legend Removed chart junk Increased interactivity Clearer comparison line options

Changes Made: Energy Graph no comparison line red comparison line

Changes Made: Turn On/Off • More visible On/Off buttons • Mouse-over effects for room selection • Labels indicating number of lights on per floor

Changes Made: Turn On/Off Hard to see buttons More distinct buttons & labels

Demo Second Interactive Prototype

Pilot Study Procedure and Participants • Think Aloud • 3 of 5 sessions recorded • Comparison Study – Schedule Wizard v. Schedule Stack – Within Participants – Measures: Time & Likert Scale Opinions

Pilot Study Discussion • • Stack: 52. 67 seconds Wizard: 56. 33 seconds Questionnaire indicates preference for Wizard Errors made on the Stack were greater

Experiment Discussion • If it were a real experiment… – Record all sessions – Increase familiarization prior to testing – Allow users to create the first schedule • Improving the Post-Test Survey – Ask more questions about satisfaction – Include more detailed questions • Disassociate ourselves from the interface

Planned: 3 rd Prototype Changes • Schedule Wizard: Hyperlink breadcrumbs • Schedule Page: Add dialog box to enter edit mode • Lighting Problems Page: • Saving Notes - Add save & cancel button to call-out • Value of Sort Functionality – needs more attention • Building plan perceived as interactive – call-out should appear over floor plan upon mouse-click • Reported/Unreported Confusion • Energy Usage Graph: • Legend Location • Add Export Functionality • Summary Data

Questions? Thanks for your attention! Ivan Tam (ivan@sims) Lindsay Tabas (lindsay@sims) Katrina Rhoads (krhoads@sims) John Mark Josling (josling@sims)