Piezo Film Sensor, by Inanc Altinay and Ashok Muralidhar.
* Inanc: We designed a dual channel sensor and amplifier board,
using flex board of 2 mm thick. Initially, we tried 1 mm but the
wires and components would not stay on. We had sensors at forearm
and elbow. It took nearly an hour to position the sensors so that
they would produce appropriate waveforms. During the measurements,
the blood pressure varied from 106 to 126 mmHg and the peaks between
successive measurements was about 40ms. The board was analog in
and analog out. We used a 14 bit A-to-D converter. We will continue
improving this design this summer to enable easier measurements
with different piezo-electric media and perhaps to include analog
to digital conversion and perhaps to include more of the Phoenix
architectural components.
* El: I'll provide you with a Phoenix logon and establish your
sub-project with you and Ashok as co-leads, so that you can update
your progress in real time. If you'll send me your main page,
modified from http://www.phoenix.tc-ieee.org/Phoenix_Project_Template.htm
, I'll post it and link it to the Projects page. Make it an index
into your projects, and link it to the main page of project you
just completed. Then, link that page to your project plan page
of that project and to your deliverables page, and link it to
your documents, such as Word, pdf, cad, and plots to help you
tell the story. Let Carl and I know when that is done.
Status
* Larry: He worked on the web page. He and Germaine met with
a member of the University IRB who seemed to be very positive.
Larry is very hopeful that they'll be able to identify workable
criteria to produce the Sphygmochron website.
* Chris: He worked on the requirements document, reading standards.
There is a meeting of the IEEE Systems Requirements conference
in the Twin Cities in June, and they have a tutorial on Saturday
on systems requirements that he would like to attend. We asked
him for a link to the meeting and a name of the chair of the tutorials.
Perhaps we can get a pass for him.
* Mike: He is working on his opto-electric sensor. He talked to
Jim Whittier of Nonin. As he works on his project, he will have
electrical engineering questions. Jim Holte offered to help him.
* DeWayne: He is working on his Linux system. He found a solution
to his Java buffer problem. Tried coding in Java but couldn't
easily produce *.exe files. He tried C Sharp with Visual Studio,
but couldn't get answers to his questions. Now he is working in
Linux with GNU tools. It seems to have a robust support group
so that he can get answers to his questions more quickly. Now
he is looking for open source analogs to Labview.
Phoenix Presentation to Twin Cities Chapter of Engineers in Medicine and Biology Society on Thursday, May 24th, 11:30 a.m -1 p.m. CDT.
El, Carl Schu, Larry and Germaine are presenting the Phoenix Project. The meeting announcement is posted at: www.emb.tc-ieee.org. Our presentation description is:
MAY 24, 2007: Open Source Medical Device Development by the
Phoenix Project
(Lunch meeting, pizza & soda provided)
The Phoenix Project is a study group of the Twin Cities IEEE to develop an ambulatory blood pressure monitor for the Halberg Chronobiology Center at the University of Minnesota. Our goal is to make a monitor that is inexpensive, unobtrusive, easy to use and collects a week of blood pressure measurements. The Halberg Chronobiology Center wants the monitor for long term use on a massive scale to obtain measures of health, and to encourage the development of diagnostic, prevention and treatment techniques. More information about the Project can be found at www.phoenix.tc-ieee.org .
We will provide a brief group presentation to stimulate questions for an in-depth Q&A, hopefully with enthusiastic cross-audience discussion.
The presenters from the Phoenix Project are:
* Introduction - El Nolley
* Sensors - Carl Schu
* Application software - Larry Beaty
* Usage - Germaine Cornelissen
We reviewed our draft presentations, and inviting and receiving comments from our colleagues. We plan to have a final version of our presentations by next weekend.
This page is maintained by Ellis S Nolley. It was last updated on 16 May 2007.
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