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Design a device to complete manual tissue preparation process for biochemical analysis. The device should freeze the tissue with liquid nitrogen and grind it to a powder.
In our third and final semester on this project, we finalized our prototype. One team built a timing circuit for the solenoid valve while the other team designed the grinding chamber, cooling chamber and pulverizing head. The UW-Machine Shop machined our parts from AutoCAD drawings. We have mounted the grinding and cooling chamber, assembled the electronics and connected all pneumatic parts. Initial testing of all components with mouse liver, liquid nitrogen, and the dry-ice/ ethanol bath occurred in our client’s lab.
Our project earned both Honorable Mention and a K-12 Outreach Award at Engineering EXPO, April 10 - 12, 2003. Final presentations occurred May 2, 2003 in the atrium of the Engineering Centers Building.
Previous website
- Fall 2002, 2nd semester of project
Initial website
- Spring 2002, 1st semester of project
| Week | Reporting Period Beginning | Activities |
|---|---|---|
| 1 | January 24 | Client contacted, reformation and organization of group |
| 2 | January 31 | Divided tasks, patent proposal, prototype work |
| 3 | February 7 | Patent, EXPO proposal, prototype working, chamber design |
| 4 | February 14 | Patent Meeting, chamber design, circuit timer |
| 5 | February 21 | Drawing for head and chamber, circuit timer |
| 6 | February 28 | Presentation, drawings for chamber, circuit building |
| 7 | March 7 | Midsemsester presentation given, design notebooks turned In |
| 8 | March 14 | Timing circuit, machining parts |
| 9 | March 21 | Spring break, machining parts |
| 10 | March 28 | Circuit completed, machining completed, mounting work, EXPO preparation, insulation work |
| 11 | April 4 | Completion of prototype, initial testing with cashews, EXPO preparation |
| 12 | April 11 | Engineering EXPO |
| 13 | April 18 | Planning testing |
| 14 | April 25 | Testing, preparing poster and final paper |
| 15 | May 2 | Final presentations |
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Product Design Specification (Version 6) (May 6 2003, 10 kb) |
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AutoCAD of grinding chamber (May 6 2003, 52 kb) |
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AutoCAD of grinding chamber rim (May 6 2003, 59 kb) |
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AutoCAD of insulating chamber (May 6 2003, 76 kb) |
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PSpice of timing circuit (May 6 2003, 4 kb) |
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Midsemester Presentation (May 6 2003, 2461 kb) |
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Video clip of timing circuit LED (May 6 2003, 352 kb) |
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Video clip of pneumatic components (May 6 2003, 352 kb) |
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Video clip of prototype grinding tissue (May 6 2003, 818 kb) |
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Team picture with poster (May 6 2003, 127 kb) |
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Final Poster (May 6 2003, 296 kb) |
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Product Design Specification (Version 7) (May 6 2003, 10 kb) |
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Final Design Paper (May 7 2003, 2160 kb) |
