Shower%20Temperature%20Control%20System

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Shower Temperature Control System
Tempero Systems Stephen Au-Yeung Francis
Merin Victor Tai Jason Wong
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Overview

• Problem
• Vision
• Features
• TemperSure
• Costs
• System Components
• Functional Deviation
• Obstacles Encountered
• Experiences
• Outlook
• Conclusion

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Problem

• Study done by Health Canada on pediatric hospital
  cases

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Vision

• Existing solutions
• Expensive
• Mission
• Affordable
• Safe

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Solution

• Our solution The TemperSure System
• Goals Attain and maintain water temperature
• Features
• Automatic temperature adjustment
• Temperature monitoring
• Anti-scalding provisions
• Simple user interface

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TemperSure

• Potential markets
• Retirement homes
• Hospitals
• Hotels
• Homes with small children or elderly

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Costs

• Cost of major components

Solenoid Valve 130.00
Thermocouple 90.00
Motors 170.00
Valves 40.00
Motor Electronics 50.00
User Interface 50.00
Plumbing 60.00

Total 590.00
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System Components
Anti-Scald Mechanism
Temperature Controller
User Interface
Motorized Valves
Sensors
Input/Output
Output
Feedback
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Temperature Acquisition

• K-Type Thermocouple
• Wide range of temperatures
• Accuracy
• Fast response time
• Durable
• Direct contact with water flow

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Temperature Adjustment

• Custom fitted Motorized valves

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Temperature Adjustment

• Valves respond to temperature changes
• Firmware control
• Limits temperature range to prevent undesirable
  temperature changes

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User Interface
Blinking Display as activity indicator
Power Button
Toggle Current Temperature
Increase Temperature
Decrease Temperature
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Anti-Scalding

• Prevents water temperature over 45C
• Solenoid on/off valve
• Manual override

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Functional Deviation

• Non-independent anti-scald unit
• Power restrictions
• User interface
• Decreased functionality

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Obstacles Encountered

• Valve selection
• Gate valve
• Ball valve
• Valves Water flow vs. valve position
• Plumbing
• Motor unit
• Sensors

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Experiences

• Water adds difficulty to project
• Try to keep to area of expertise

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Outlook

• Independent anti-scalding unit
• Size reduction through PCB
• Battery or self powered
• Smaller solenoid valve size
• Improve control algorithms
• Precise flow control

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Conclusion

• Summary
• Acknowledgements
• Chao Cheng
• Gary Houghton
• Questions
• Demonstration