Table of Contents
As our team approaches the system from a high level, breaking down the customer needs into functions of the pediatric stander is helpful. From this decomposition, our team can begin to propose solutions to the functional issues raised.
An up to date Visio diagram of the functional decomposition can be found here.
The stander's performance and functionality can be tested in different ways to make quantifiable goals and benchmarks to ensure the final deliverable meets the customer needs.
- Team 13045 benchmarked the speed of a brisk walk to be 3MPH
- Acceleration and jerk can be measured from a motorized scooter
- Have volunteers assemble kit to observe time and difficulty
- Have stander drive over 20 ft line of straight tape to measure deviation
- IP Code water protection rating for light beverage spills
- Use stander on and off for several hours to test battery power
- Test all control combinations for both client and remote together
In this brainstorming phase, our team suggested all possible solutions to the functionality requirements of the stander. These solutions were selected into three different conceptual designs which were compared to team P14045's design choices. Based on this information, our team decided to pursue a realistic design with the most positive impacts on the project parameters.
Estimation of bill materials (BoM) for system design 2, the most realistic design generated in concept selection phase
The pediatric stander must accept input from the users and adjust its movement accordingly. The high-level system architecture indicates which components or groups of components interface with each other to achieve the desired behavior of the stander.
An up to date Visio diagram of the system architecture can be found here.
Estimations for feasibility have been made. These are useful for identifying if the design direction is realistic and satisfies the customer needs.
- How much power will the stander consume under normal use?
- Will the assembly process add less than 20 pounds to the stander?
- Is the build kit a realistic solution for parents?
- Is the current TI microcontroller appropriate for the improved design?
As our team approaches the design, we consider all risks that could impact the motorized pediatric stander or our ability to meet the customer needs and deliver the stander. As engineers, our biggest concerns are related to the safety of the users while also ensuring that the stander we deliver meets and exceeds the expectations of the customer.
The up to date risk management spreadsheet can be found here.