Project: Solid-State Thermostat for Peltier Beverage Temperature Control
Team Members• Kristian Liwanag • Gregory Brady• Adrienne Suñer • Jackie FloydFaculty Advisor• Dr. Peter OsterbergIndustry Representative• Steve Westdal, Insitu, Inc.Client• Sarah Anderson, Owner,
Anna Bananas Cafe
Project Refresher
• Coffee Mug • Measures the Current
Temperature with a Thermocouple• Compares to User
Specified Temperature with a MOSIS Chip• Regulates the
Temperature with a Peltier Device
Project Refresher (Hysteresis)
25°C
55°C
5°C
52°C
58°C
2°C
8°C
Heat
OffHeat
Cool
Cool Off
OffHeat
OffCool
MilestonesStatus Description Due Date Completion
DateCompleted Design Document v0.9 11/2/2012 11/2/2012
Completed Final Budget 11/16/2012 11/26/2012
Completed Design Document v1.0 11/16/2012 11/16/2012
Completed Final MOSIS EDF Files Completed 11/16/2012 11/16/2012
In Progress Remaining Project Components Ordered
11/30/2012 -
In Progress Acquisition and Characterization of Thermocouple, ADC, Peltier
Device, and BJT Switches
11/30/2012 -
In Progress November Program Review 11/30/2012 11/30/2012
Accomplishments
• MOSIS EDF File Submitted for FAB• Final Budget Approved• Design Document v1.0 Approved• BJT Switches and Peltier Device Characterized• Mug in queue to be built with thermocouple
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BJT Switch and Peltier Circuit (Demo)
http://www.youtube.com/watche?v=zWxkqAL5WIQ&feature=youtu.be
Cooling Demonstration
Heating Demonstration
http://www.youtube.com/watch?v=SnvylN3dJxI&feature=youtu.be
Concerns
• Themorcouple and ADC are yet to be characterized• Power limitations and Heat dissipation on the BJT and Peltier circuit
Questions?• Kristian Liwanag (Fall Semester Team Lead / MOSIS)• [email protected]
• Gregory Brady (Spring Semester Team Lead / Peltier)• [email protected]
• Adrienne Suñer (Treasurer / Thermocouple)• [email protected]
• Jackie Floyd (Secretary / BJT)• [email protected]
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