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The ultimate goal of our project is to design and build an inexpensive, portable electroencephalofram (EEG- brain wave monitor) which provides brain activity feedback to help users to learn how to meditate effectively. This semester, the group will focus on the amplification and filtration of the raw signal obtained by the detection electrodes designed by previos semesters’ groups.
The team has settled on which circuit it will build and test. The team has tried to gain access to the electric shop and will build the circuit to test. Testing is occuring according to the plan outlined in the team’s reports.
Team Picture:
Team Members, in order from left to right: Brenton Nelson (BWIG), John Harrison (Leader), Eric Lee (BSAC), and Albert Kwansa (Communicator)
Design Circuit:
This was the team’s concensus design for the prototype. Building and testing of this circuit was planned. If this circuit provided correct output, this would be incorporated into the design. It was noted by the team that the primary filter did not filter adequately to do anything with the signal and with simple math, a second order filter could be implemented without many extra parts.
| Week | Reporting Period Beginning | Activities |
|---|---|---|
| 1 | January 20 | Assigned team roles; Researched the background and motivation of the project |
| 2 | January 27 | Met with client; Discussed possible interest areas associated with the topic |
| 3 | February 3 | Met with Professor John G. Webster; Team decided to focus on amplification and filtering; Composed Project Design Statement |
| 4 | February 10 | Team met several times to discuss possible circuits that would accomplish our goal |
| 5 | February 17 | Designed a possible circuit; Met with Professer John G. Webster; Team split up responsibilities for the midsemester paper due |
| 6 | February 24 | Representations of the three designs were done on PSpice; the midsemester paper rough draft was done; midsemester presentation was planned and given on the 24th of February |
| 7 | March 3 | final draft of midsemester paper was assembled and handed in on the 3rd; team set up the access to the electrical shop and obtained all necessary equipment |
| 8 | March 10 | Access to the electrical shop has been pursued; Materials for building of the circuit have been obtained |
| 9 | March 17 | Spring Break- |
| 10 | March 24 | Built Circuit; began testing |
| 11 | March 31 | Testing; pursuing outside assistance |
| 12 | April 7 | Testing |
| 13 | April 14 | Testing: Converted filter to a 2nd order |
| 14 | April 21 | Final Paper written: Final testing completed |
| 15 | April 28 | Prepare final presentation; meet with advisor |
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Midsemester Presentation (Feb 24 2006, 346 kb) |
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Midsemester Report (Mar 2 2006, 168 kb) |
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Product Design Specifications (PDS) (Mar 2 2006, 11 kb) |
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Final Report (Apr 30 2006, 317 kb) |
