156B Week 3

MAE 156B Week 3 Progress Report

Project Title: Locomotion Monitoring System for Mouse Cognitive Behavioral Task

Sponsor Name: Bloodgood Lab and Hnasko Lab

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Continuing analysis of Raspberry Pi environment - determining if using python scripts will be a bottleneck and if C/C++ programs might be too much work

  • Redesign of systems based on fans rather than pressure chamber in progress

  • Fabrication pending fan redesign

  • Tests of fan drag force must be conducted to determine feasibility (both to support disk and to offset mouse weight)

Accomplishments from Previous Week

• • Tethered raspberry pi to computer via android phone

  • Case design decisions made

  • Linear bearing analysis done

  • Fan enclosure CAD model made

  • Raspberry Pi boards purchased

  • Drag force analysis of disk conducted

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Finish testing of fan powered base (Everyone)

  • Write “impact to society” section of report (Philip)

  • Finish design of fan powered base (Michal)

  • Place orders for fans, bearings, and other material (David)

  • Get optical mouse data from raspberry pi (Jeff)

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments

• • No concern from sponsors last meeting will update them on fan redesign this upcoming week

Instructor Comments from Last Meeting and Actions Taken to Address these Comments

• • Consider using fan(s) instead of pressurized air chamber

    • Drag analysis was performed for a disk

  • Last week was a presentation week, no formal instructor meeting

Risks and Areas of Concern

• • Cost of using equipment fans to float disk may be unfeasible (~$1500)

  • Cheaper fans may be too loud

  • Disk may not be rigid enough

Resources or Information Required but not Available

• • We need to know at which location the noise level (of 70dB) was sampled for the Hnasko Lab’s setup.  

Budget (list amount spent and amount remaining)

• • $193.79 spent thus far

  • $3,306.21 remaining

Progress on Report and Web Page

• • Report:

    • Background, Review of existing solutions, statement of requirements, Deliverables, and Title Page were added to report.

    • Added individual component analyses to appendix of report.

Schedule

Major Milestones: