1. CS-EE 481 Spring 2007 1Founder’s Day, 2007 University of Portland School of Engineering Digital Odometer Authors Josh Eby Kirk Chen Brandon Pearsall Advisor Dr. Robert Albright Dr. Peter Osterberg Industry Representative Mr. Tushar Agarwal Focus Enhancements, Inc. Mr. Andrew Hui Intel Corp.

2. CS-EE 481 Spring 2007 2Founder’s Day, 2007 University of Portland School of Engineering Agenda Introduction Josh Eby Background Josh Eby Methods Kirk Chen Results Kirk Chen Conclusions Brandon Pearsall Demonstration Brandon Pearsall

3. CS-EE 481 Spring 2007 3Founder’s Day, 2007 University of Portland School of Engineering Introduction Digital Odometer using CMOS technology. Tracks the distance that a rotating wheel has moved and displays it on 7-segment LCDs. CMOS technology simplifies a problem. Integration techniques between different technologies.

4. CS-EE 481 Spring 2007 4Founder’s Day, 2007 University of Portland School of Engineering Background Digital Odometer vs. Mechanical Odometer. Analog vs. Digital signals. Signal Integrity. CMOS chip & Photo-Reflective Sensor.

5. CS-EE 481 Spring 2007 5Founder’s Day, 2007 University of Portland School of Engineering Methods Functional Blocks. -Platform with Motor & Wheel. -Sensor & Output Conditioning. -Counting Circuit. -Decoder/Power Relay/Display.

6. CS-EE 481 Spring 2007 6Founder’s Day, 2007 University of Portland School of Engineering Results Rotating Wheel – Sensor – Signal Conditioning – CMOS chip – Display. Top-down, Bottom-up Implementation.

7. CS-EE 481 Spring 2007 7Founder’s Day, 2007 University of Portland School of Engineering Results DC Power Supply (120V AC) Electric Motor Rotating Wheel with Reflector Stationary Sensor Signal Conditioner CMOS Counter 7-Segment DecodersPower Relay and Display C1C2C3C4 Block Diagram

8. CS-EE 481 Spring 2007 8Founder’s Day, 2007 University of Portland School of Engineering Results Final Circuit

9. CS-EE 481 Spring 2007 9Founder’s Day, 2007 University of Portland School of Engineering Conclusions Digital Odometer Prototype. Combining and Integrating Various Technologies. Limited by Speed of Wheel. - Better Sensor. - Shorter Hold Time on Debouncer. Limited to One Size of Wheel. - Additional Counters & Microprocessors.

10. CS-EE 481 Spring 2007 10Founder’s Day, 2007 University of Portland School of Engineering Demonstration Digital Odometer. 7-Segment Displays. Counts Distance/Rotations Traveled. Synchronous Reset.

11. CS-EE 481 Spring 2007 11Founder’s Day, 2007 University of Portland School of Engineering Demonstration MOSIS Chip & Circuit Housing LED Display Optical Sensor Electric Motor Wheel Conceptual Design

12. CS-EE 481 Spring 2007 12Founder’s Day, 2007 University of Portland School of Engineering Demonstration Final Prototype

13. CS-EE 481 Spring 2007 13Founder’s Day, 2007 University of Portland School of Engineering Thank You. Are there any questions?