Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Analysis of Camera
Decided to go with Yi Action camera given by sponsor
Must determine how to mount the camera to the rod and provide source of illumination underwater
Analysis of Sampler Frame Component
PVC was chosen over Aluminum and ABS plastic because the material is easily obtainable, inexpensive, and easier to work with
PVC has a yield strength of 3.3 MPa which is sufficient to handle forces tested in risk reduction
Analysis of Sampler Strainer Component
Plug with removable strainer was chosen to offer the option of draining water from sampler
Removable strainer plug is relatively inexpensive, easily obtainable, and more durable, at the cost of taking more time to machine
Analysis of Trigger Mechanism: Sealing
Sampler will be sealed with plug mechanism
Called manufacturer who stated that 1 inch short end plugs should work for a sampler tube inner diameter of 0.1016 meters
Analysis of Virtual Processing
Image will be taken of sample site with virtual grid overlaid during post-processing with a variety of programs
Accomplishments from Previous Week
Individual Component Analysis Completed and Uploaded to Website
Part Designs discussed and finalized
Design Proposal Presentation Completed and Uploaded to Website
Began gathering material for prototype
PVC was bought from The Home Depot to begin work on prototype frame
Plugs are being ordered to begin sealing tests
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Prototypes of the different components of the Sampler should be constructed and tested
Camera/Underwater lighting attachments (Caitlin)
Visual Processing (Josh)
Algae Strainer (Isabel)
Frame/Reflective Taping (Justin)
Sealing Trigger Mechanism (Denny)
Vibration Attachment/Sediment Cutter Attachment (Joshua/Justin)
First Portion of Report Completed
Background (Caitlin)
Review of Existing Solutions (Justin)
Statement of Requirements (Denny Zhou)
Deliverables (Joshua)
Title page (Isabel)
Appendix with Individual Component Reports (Isabel)
Secondary Goal: Find alternative solution to current trigger mechanism
Team consensus is that current trigger mechanism, while serviceable, may be hazardous and unreliable
Redesign could delay essential progress on the other components
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Have not recently met with Sponsor due to an accident on the Sponsor's side; most comments are from before week one
Team has looked into using smaller cameras
Determined that using a array of smaller cameras will be too challenging to construct within current time restraints
Team has looked into IR Vision
Determined that use of regular go-pro cameras with illumination will be more cost efficient and easier to obtain/process
Method of implementing 40 intersection quadrant
Team will utilize virtual grid with help from reflective tape on frame
Method of Measuring Wet Weight vs. Dry Weight algae
Team will implement plug strainer feature to drain water out of sample if that is desired
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Vibration Device (4/5)
Instructor recommended wind-up mechanical motor in place of electric one for device due to the samplers underwater application
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A
Risks and Areas of Concern
Electrical risk of adding vibration device to sampler, especially if it involves an electrical motor
Pushing down on the trigger with extendable rod to fire sampler device may break trigger due to applied force angle
Resources or Information Required but not Available
Manufacturer was called for part details and pricing
General Part info was obtained
Manufacturer never got around to pricing/sending part samples
Schedule
Prototyping construction to be complete by next week
Design Proposal Presentation to be completed on 4/12
First Section of Report to be completed by 4/14 midnight
Update Gantt chart.
Budget (list amount spent and amount remaining)
Spent $18.20 on PVC pipe, PVC solvent, and PVC connectors
$981.80/$1000 remaining
Progress on Report and Webpage
Added Individual Component Analysis for all members to website
Added Design Proposal Presentation to Website
Sections of Report to be completed by end of this week
Background
Review of Existing Solutions
Statement of Requirements
Deliverables
Title page
Appendix with Individual Component Reports