Pulse Oximeter Team Progress Report #12 4/18/09 – 4/23/09 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 - 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 Goals for next week - Remove the noise from the prototype’s signal - Build a copy of the probe for mechanical testing - Contact mechanics lab for testing - Conduct mechanical testing - Develop poster - Give final presentation This week’s accomplishments - Finished the initial prototype - Tested the prototype’s compatibility with the MedeCal circuitProject 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 4.18.09 4 h Bogdan, Jonathan Worked on prototype 4.18.09 0.5 h Joe Worked on presentation 4.20.09 ~ 1 h Jonathan Worked on prototype 4.22.09 1 h Matt, Bogdan, Jonathan Discussed probe design improvements, tested compatibility of the probe with the MedεCal circuit 4.22.09 0.5 h Matt Researched techniques for working with photodiodes 4.23.09 ~ 2.5 h Matt, Bogdan Worked on prototype, Identified ways to reduce noise in the signal 4.23.09 0.5 h Jonathan Worked on prototype, identified ways to reduce noise in the signal 4.23.09 1.5 h Joe Worked on presentation 4.25.09 3 h Team Met with Dr. Webster, worked on prototype, divided up sections for presentation 4.25.09 0.25 h Jonathan Met with Chris, learned how to operate the pulse oximetry circuit. Expenses Items Cost 4 photodiodes (2mm×2mm) <
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