The Perfect Shower
Team – Clean
Mikal Tirfe
Sandra Wiese
Negar Ehsan
Tony Carosa
Tim Plummer
Agenda
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Project Description (Sandra)
Design Objectives
High Level Implementation (Tony)
Digital Control Unit
User Interface (Negar)
Analog Controls
Mechanical System (Tim)
Risk and Contingency Plan
Cost Estimate (Mikal)
Division of Labor
Schedule
Primary Design Objectives
 To
control the temperature of the shower
 Control the water pressure of the shower
 Manual user override
 Safe in shower user interface
 Shower ready indicator
 Build a working model
Secondary Design Objectives
 Continuous
flow system
 Four user presets
 Low hot water warning
 Advanced user interface (such as optical
or voice)
 Longest shower estimator
 Power System
 Metric/English unit selection
High Level Implementation
Digital Control Unit
Digital Control Unit
User Interface
 Safe
for in shower use
 Four seven segment LED displays
 Six function buttons (On/Off, Temp set,
Pressure set, Up, Down, Emergency off)
 Five LEDs to indicate display mode
Analog Temperature Controls
Analog Pressure Controls
Mechanical System
 Build
complete demo system
 Water pump
 PVC piping
 Catch tub
Risk and Contingency Plan
Possible Risks
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Not able to build motor
controller
 Sensor characteristics
are not good enough for
our purposes
 Unable to meet safety
standards
 Team member unable to
fulfill designated tasks
Solution to Risk
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Use stepper motor and
digital control
Refine baseline
objectives
External shower control
Re-evaluate schedule,
workload, and baseline
objectives
Cost Estimate
 Mechanical
parts
 Digital Components
 Analog Components
$200.00
$200.00
$100.00
 Total
$500.00
Division of Labor and
Responsibilities
Sandra: Team Coordinator, Analog System
Tony: System Interfaces, Digital System
Negar: Analog System, User Interface
Mikal: Digital System, User Interface
Tim:
Digital System, Mechanical System
Project Schedule
Questions?