Team Vision for System-Level Design Phase
Team goals for this phase:- Generate the functional decomposition of the project as a whole
- Decide on a finalized concept for each subsystem
- Understand the system architecture and how it addresses the engineering requirements
Functional Decomposition
Function Diagram

Benchmarking
To view the team's live document, click here.
Benchmarked Items:
- Microcontrollers
- Pumps
- Door lock sensors
- Door locks
- Draining platforms
- Height adjustable tables
- Door handles
- Oil lines
- Bar code scanners
Concept Development
Concept Generation Table
The complete list of functions from the Function Diagram was narrowed down to a list of subfunctions that were used to develop three different system concepts.
Morphological Chart
To view the team's live document, click here.
Concept Selection
Selection Criteria
- Easy to use/troubleshoot
- Ergonomic (quiet & safe)
- Can be completed in 2 semesters
- Durable
- Fast cycle time & changeover
- Small in size
- Organized
- Automated
- Adaptable
Pugh Charts for Generated Concepts
+ : More likely to meet criteria, - : Less likely to meet criteria, s : Equally likely to meet criteria
From our comparison, it was determined that our Feasible Concept met the criteria better than our Manual and Tech concepts.
Systems Architecture
Purpose
- Ensure flow of energy, info, material and structural forces as intended
- Define subsystem functions, envelopes and interfaces
System Architecture Mapped to Engineering Requirements
Feasibility: Prototyping, Analysis, Simulation
Feasibility Questions / Possible Solutions
- How many fixtures are needed? / What parts need to change? : Prototype with cardboard, wood, plastic
- How long will a changeover take? : Prototype with cardboard and time a mock changeover
- Will the pump provide appropriate pressure and duration? : Benchmark capabilities of possible pumps
- Which type of door lock will ensure safety and eliminate the possibility of leaking? : Benchmark possible types of door locks and their failure rate
- Will all of the sensors be compatible with the HMI/PLC? : Benchmark to find sensors that are guaranteed to be compatible with chosen HMI/PLC prior to purchasing
Finalized Concept
After analyzing our proposed concepts and critiquing each option based on our selection criteria, as a group we decided on a final concept for each sub function of our system using what we felt are the best options from our brainstormed concepts.- Different fixture for each nozzle model
- PLC/HMI display with LED lights
- Manual sliding door with electric door interlock
- Locate and secure nozzle using a yoke plate (similar to previous MSD team)
- Manual input on touchscreen with a scanner
- Internal reservoir to store oil
- Electric centrifugal pump to circulate oil
- Gravity flow to return oil to reservoir
Risk Assessment
Link to team's week 6 risk assessment document here
Plans for Next Phase
System Design Review
Link to System Design Review Presentation hereLink to System Design Peer Review Group Suggestions here
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