Team Mio

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

Outline• Project Refresher• Design Process• Accomplishments• Concerns• Plans

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

Top Level Block Diagram

Design Process

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

MOSIS Block Diagram

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October MOSIS IC Design

MOSIS IC Design Now

MOSIS IC Design Now

BJT Switch and Peltier Circuit

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

Plans• Complete Peer Evaluations• Finish Characterizing Thermocouple and ADC

Questions?• Kristian Liwanag (Fall Semester Team Lead / MOSIS)• liwanag13@up.edu

• Gregory Brady (Spring Semester Team Lead / Peltier)• bradyg13@up.edu

• Adrienne Suñer (Treasurer / Thermocouple)• suner13@up.edu

• Jackie Floyd (Secretary / BJT)• floyd13@up.edu