Pulse Oximeter Team Progress Report #11 4/11/09 – 4/18/09 Team Members Bogdan Dzyubak – Communicator Joe Helfenberger—BWIG Jonathan Meyer—Leader Matthew Parlato—BSAC Clients Amit Nimunkar Jonathan Baran Advisor Dr. John Webster PhD. A Problem Statement The purpose of this project is to develop a low-cost pulse oximeter probe for use in developing countries. It will be integrated with the MedCal, a handheld processing device which will record and display patient data. The oximeter must be rugged, durable, inexpensive, and must deliver data to the MedCal as an analog signal. A Team Goals Previous goals for this week - Acquire a suitable spring, with a low enough spring constant that the probe can be clipped on an ear for an hour without damaging the tissue - Construct initial prototype - Contact mechanics lab for testing - Characterize LEDs and pick calibrating resistors Goals for next week - Finish building the prototype - Build a copy of the probe for mechanical testing - Contact mechanics lab for testing - Conduct mechanical testing - Characterize LEDs and pick calibrating resistors This week’s accomplishments - Developed a probe design based on a clothespin with a plastic spring. - Completed most of the probe’s constructionProject Schedule The table below is a Gnatt chart of the projected timeline. Dark colors are used for completed stages, and light colors for incomplete stages. Tasks January February March April May 23 30 6 13 20 27 6 13 20 27 3 13 17 24 1 8 Project Development Research Brainstorm Design Prototype Deliverables Progress reports Midsemester presentation Midsemester report Final presentation Final report Communication Advisor Meetings Client Meetings Website Difficulties No extraordinary difficulties were encountered this week.Activities Date Time Team member(s) Activities 4.10.09 2 h Team Attended Tong entrepreneurship lecture, met with Dr. Webster 4. 11.09 0.45 h Joe Finished shop certification (last two quizzes). 4.11.09 1.5 h Jonathan Shopped for springs 4.11.09 2 h Matt Bought clothespins, worked on prototype (mechanical design) 4. 12.09 4 h Bogdan and Joe Purchased springs 4. 13.09 3.5 h Bogdan, Joe, Jonathan Worked on prototype 4.13.09 2.25 h Matt Worked on prototype 4.14.09 2.5 h Matt Worked on prototype and circuitry 4.15.09 5.5 h Joe Worked on prototype and EXPO presentation 4.15.09 9 h Bogdan Worked on prototype 4.15.09 3 h Matt Worked on prototype circuitry 4.16.09 1 h Joe Finished EXPO presentation 4.16.09 2.5 h Bogdan and Matt Worked on prototype 4.17.09 4 h Bogdan and Jonathan Worked on prototype Expenses Items Cost 4 photodiodes (2mm×2mm) <
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