Please refer to the Systems Level Design Documents directory for additional documents.
Team Vision for System-Level Design PhaseThe Body Cooling System team planned on completing two sets of tasks during this phase: action items from the Problem Definition Design Review, and all assignments listed in the System-Level Design node. All tasks were completed as promised. See below for specific tasks.
- Risk Management Plan
- House of Quality
Systems-Level Design Tasks
- Functional Decomposition
- Morphological Chart
- Concept Development and Selection
- Systems Architecture
- Feasibility Analysis
Action Items from Problem Definition Design Review
The following action items were identified at the Problem Definition Design Review to be completed during the System-Level Design Phase:
Risk Management Plan - Elaborate on risks and identify a formal mitigation plan for each risk identified.
- Owners: Alyssa and Mallory
- Progress: Complete
See the updated Risk Management Plan here.
House of Quality - Complete the House of Quality based on the updated Customer and Engineering Requirements.
- Owner: Jared
- Progress: Complete
See the updated House of Quality here.
For the Functional Decomposition document, click here.
Morphological Chart showing critical functions for the Test Apparatus
Concept Development using the functions identified in the morphological chart
Pugh charts using each of the three potential concepts as a datum to compare the pros and cons of all concepts.
Datum: The All-in-One
Datum: The Over Achiever
Datum: The People Pleaser
The All-in-One has been selected as the preliminary concept for the final testing apparatus. Each function of the testing apparatus will be initially developed and tested separately in order to get the ID team preliminary results to meet their prototype deadlines. This will allow them to refine and iterate their designs based on the results of each individual test.
Although the Pugh chart scores for the All-in-One and the Over Achiever were similar, the All-in-One was selected based on the cost and feasibility. The Over Achiever has the potential to be very expensive as it employs a more expensive infrared thermometer as well as an expensive fabric stiffness tester. The All-in-One is also a more feasible design based on using a human as the test subject instead of creating a synthetic human model.
Since the All-in-One employs a human as the test subject, there will be a significant amount of variability. Although this has been selected as the preliminary concept, the team will still be pursuing the potential to create a synthetic human model as the test subject to allow the testing apparatus to have a higher potential for reusability.
Feasibility: Prototyping, Analysis, SimulationBasic calculations were performed to determine the cooling properties of the phase change materials in contrast to water. While more models are needed, this shows that such phase change materials are feasible for use in a body cooling system.
|The All-in-One||The Overachiever||The People Pleaser|
Design Review MaterialsFor the Design Review II Presentation, click here.
For notes from the Design Review II, click here.
Plans for Next Phase
Action Items from Review:
- Add breathability to customer/engineering requirements
- Practice presentation on projector in advance to avoid technical issues
- Test for garment/skin contact in regards to flexibility
- Follow up with Xerox on using environmental control chamber
- Investigate places on RIT campus where environmental testing can be done
Goals for the Subsystem Design Phase:
- Address and close any action items from the Systems Design Phase
- Review and identify any new requirements to ensure that we are still meeting customer needs as we move forward with the design
- Conduct a proof of concept by analyzing the critical subsystems and identifying feasible alternatives as well as beginning simulation and prototyping of these subsystems
- Conduct preliminary testing of the prototypes provided by the ID team with the goal of collecting data that they can use to improve the design in a second iteration
- Research and start the procurement process for materials that will be needed for the final testing apparatus
The timeline below details these tasks in depth and allocates each task to a team member to ensure that all tasks will be completed before the next design review.
Click on the timeline below to see it larger or click here to see the Phase III timeline document.