Customer Handoff & Final Project Documentation
Table of Contents
Team Vision for Final Demo and HandoffWhat did we plan to accomplish?
- Complete our prototype
- Update our BOM
- Updated Risk Management
- Finalize test plans/Conduct final tests
What did we actually accomplish?
- Completed construction of our design
- Finalized our BOM/Received all materials
- Updated Risk Management to reflect the completion of our design
- Conducted our final system tests
Test Results Summary
Below is an image of our Performance vs. Requirements chart. The column on the far left shows whether or not the specified value was achieved. We successfully meet all of our metrics, except for number of use cycles, whihc we were unable to test.
A link to the excel file with all of our test plans, including how each test was conducted can be found here: Performance vs. Requirements Chart
Design Drawing Package
Below is an image of our full CAD model.
The entire drawing package can be found here: Detailed Drawing Package
Risk and Problem TrackingBelow is our updated risk management chart with most of the risks now at zero.
Below is our updated problem tracker with the issues we encountered in the final phase.
Final Project Documentation
Attached is our Final Paper which details the problem, how we developed out design, and how we constructed our prototype.
Attached is our Final Poster.
Final BOMAfter receiving all materials required for the project, here is our finalized BOM: Final BOM
Final Prototype and Imagine RIT Exhibit
Recommendations for Future Work
Customer and Team FeedbackBased on our group's observations during the design and build process and from feedback provided to us by Chris Hilderbrant, below are some recommendations for future iterations:
1. Frame Design
- Although Chris was satisfied that the frame did not impede in his transfer from his wheelchair, he recommended that the frame be removed from the front and only located at the sides or back.
- Similar to the above point, the cylinders should ideally be reduced in size and moved further back.
- Optimize the material and frame geometry for a lighter or cheaper construction material.
- Develop peripherals first to ensure the seat and frame have adequate mounting space.
2. Cylinder Functionality
- As mentioned in our test results, the cylinders require a weight of 155 lbs on them in order to break the friction seal for descent. Ideally, the cylinders would effortlessly descend with any weight on them. This idea was partially due to the fact that the cylinders are not designed for the purpose we used them for, so cylinders for appropriate for this application should be utilized.
- It would be more preferred for the seat to be able to be stopped at any height. Currently, the seat can only remain in the lowest or highest-most positions.
- The control system would likely need some redesign in order to be be sufficient in a public setting. Although the valve is relatively easy to open and close, it's current position is inconvenient.
- Utilize hydraulic systems optimized for use with water, providing corrosion resistance. May need to develop from scratch due to a small market for them.
Insights from Imagine RITWe received a lot of valuable feedback from visitors at Imagine RIT. Some of this feedback is listed below:
- This design could be used by those other than wheelchair-bound individuals, such as stroke patients or those with knee-replacement surgery who can't bend their legs easily. The seat could be lifted prior to the user sitting on it so the distance to the seat is smaller, then they can lower themselves to the toilet.