Team Mio Solid State Thermostat for Peltier Beverage Temperature Control Team Members Kristian Liwanag Gregory Brady Adrienne Suñer Jackie Floyd Faculty Advisor Dr. Peter Osterberg Industry Representative Steve Westdal, Insitu, Inc. Client Sarah Anderson, Owner, Anna Bananas Cafe
Project 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
Milestones DescriptionDue DateCompletion Date Functional Specification v1.0 Approved 28 Sep Oct 2012 Top Level MOSIS Block Diagram Completed 1 Oct Sept 2012 Component Selection Completed8 Oct 2012 Project Business Assessment12 Oct 2012Postponed Acquisition and Characterization Complete 26 Oct 2012 October Program Review26 Oct 2012 Initial B2Logic EDF Files Completed29 Oct Oct 2012 Design Document v0.92 Nov 2012 Final Budget9 Nov 2012 Design Document v1.09 Nov 2012 Final MOSIS EDF Files Completed12 Nov 2012 All Project Components Ordered15 Nov 2012 November Program Review30 Nov 2012
Additional Design Milestones ADC design BJT switch design
Top Level Block Diagram M(0:7) U(0:7) To LED Displays Analog signal of temperature Digital Temperature Input Clock BJT Switches DC Power Supply (+5V, +12V) ADC
Thermocouple/ADC Block Diagram
MOSIS Block Diagram Asynchronous Counter Initialized to begin at 25°C Up Down 6 D-Flip Flops To Store the Value of the Desired Temperature 6 D-Flip Flops To Store the Value of the Measured Temperature Measured Temperature CLK Comparator And Subtractor 6 6 Cold Hot To BJT Switches
MOSIS EDF
Physical Cup Design
Design Concerns Small voltage provided by thermocouple Voltage divider circuit Initialize D-FFs at 25⁰C Include initialize button Potential for bit overflow Finish testing for all cases
Conclusion Project is on Schedule Parts have been ordered and received MOSIS design is on Schedule Physical design has been finalized
Questions Kristian Liwanag (Fall Semester Team Lead / MOSIS) Gregory Brady (Spring Semester Team Lead / Peltier) Adrienne Suñer (Treasurer / Thermocouple) Jackie Floyd (Secretary / BJT)