1. Yellow A Sketch Model Presentation October 4th, 2007
Smart Shower
Yellow A
Sketch Model Presentation
October 4th, 2007

2. Overview Problem Customer Market Water waste due to shower habits
Households, Hotels, Gyms
Market
Over $7 billion a year in bathroom remodeling
Problem: Water waste due to shower habits

3. Critical Considerations
Automatic Shower Concept
Pressure Regulation
Usability
Automatic Detection
Active User Input ?
Pressure Regulation: Valves
Automatic Detection: Infrared, Photodetection
User Activation: Microphone
Installation: New Shower, Retrofit
Installation
Retrofit vs. New Shower
Homeowner’s Existing Shower

4. Pressure Control via Sensors
User Activated System
Automatic System
User Activated: Microphone
Automatic: Photodetector, Infrared
Pic: Sensor setup in the shower

5. User Activated System Push Button Infrared Sensor
Sound Detection with Microphone
Location neutral
Shower noise vs. singing and clapping
Microphone in Shower
Sound Intensity of Clapping and Singing in Shower
Sound Pressure (Pa)
Clapping
Shower Noise
Singing

6. Automatic System Pressure Mat Photodetector Light through water
Photodetector in Shower
Light Detection Switch Data Through Water Flow in Shower On
Frequency= s^-1
No human under flow
Human under flow
Off
Time (s)

7. Next Steps Usability vs. Ease of Installation
Retrofit + User Activated
New Shower + Automatic
Installation: Retrofit vs new shower
Activation: user activated vs automatic
Bring back pressure regulation under market and cost.