Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Prototype and CAD model revision X2 has been finished
Analyzing software Flow Simulation
Researching on pump control using RS485 protocol on BBB
Accomplishments from Previous Week
Camera has been received
BBB Cape has been received
Confirmed design proposal with sponsor SIO; they are very excited about our design.
Researched on O-rings and tube fittings.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Purchase Lens (Kimi)
Purchase all necessary off-the-shelf parts from McMaster Carr and Misumi
Start to program camera for feedback
Finish flow simulation and determine new required chamber dimensions (Damien)
Start writing pump control code and achieve setting zero and max pump speed
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
April 9, 2015- Sponsor Meeting at SIO
Put the inlet and outlet nuzzle holes on the top and the bottom for enabling the laminar flow.
Chamber has been redesigned to have inlet and outlet hole on the top and the bottom
Add another hole for dropping the organism into the chamber
Open top chamber might be an option
Quartz flow cuvette
Hellma flow cuvette
Possible open-air water tank (connected by nozzle and tubing from chamber) to eliminate need for extra air outlet hole in the chamber
Make sure the flow velocity does not have a big variation (parabola) and make sure there is not a big velocity gradient -
Precisely, need to make sure that there is ~0.5 cm diameter area at the observation level in which the velocity gradient is within 5% at each end of the diameter.
Simulation has been finished started and need to add honeycomb
Need to design a larger chamber
Need black anodized background for both corrosion and image processing contrast
Black anodized has been added on design
Need to add diffuser
researched on honeycomb flow straightener, but it is mainly used in larger applications such as exhaust pipe on a car
will probably 3D print a honeycomb that fits in our chamber
Need to have a separated part to release bubbles
Add a water tank to release bubbles.
Need to add lighting source
May need to change back panel of chamber to be made of clear plastic -- in fact, entire chamber may be better off being machined from plastic
Therefore, need to make sure plastic purchased is machinable - see component analysis
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
April 8, 2015 - Design Proposal Presentation Comments
Redesign the chamber to resolve turbulent issue
System is only for lab testing purpose and will not be placed at the bottom of ocean
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Will mesh or honeycomb diffuser affect turbulence at the entrance?
The answer is NO, but it may affect the velocity gradient of the laminar flow and that is being analyzed in the simulation.
Risks and Areas of Concern
Pump control
Serial communication between camera image processing result and pump
Velocity gradient in chamber
Lighting
Resources or Information Required but not Available
Schedule
Describe upcoming milestone
Update Gantt chart.
Budget (list amount spent and amount remaining)
Total: $3000
Spent:
$2.95 (Fish eggs)
$346.91 (Mightex Camera)
$335.4 (Pump)
$43 (RS485 Cape)
Remain: $2271.74
Progress on Report and Webpage
Background
Review of Existing Solutions
Statement of Requirements
Deliverables
Title page
Appendix with Individual Component Reports
Have been finished