P18043: Tremor Mitigation DAQ
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Systems Design

Table of Contents

Content linked here is stored in our Systems Level Design Documents directory.

Team Vision for System-Level Design Phase

During this second phase, our team broke down the three sensor systems, determined in the previous phase, to identify the best route for us to take in achieving the key deliverables. We developed a few different concepts that considered the various ways we may be able to collect each type of data individually and how we may be able to incorporate them together. Through analysis we determined three concepts were found to be most feasible. From there we performed further analysis and discussion to come to a final decision on a design goal to focus on during the remaining weeks. This allowed us to create a more defined project plan as a team and as individuals for the rest of the semester.

Updated Documents

In our last review there were concerns about our engineering requirements mainly that we didn't really have measurable values to test for. So we went back and revised them.
Updated Engineering Requirments

Updated Engineering Requirments

See link here for complete spreadsheet.

We also went back to revise our Risks and actually thought about and addressed the effect each one would have on the project, what would cause each risk to become a reality and came up with actions to mitigate these risks form occurring. We determined the importance of each based on the likelihood (1-3) and severity (1-3). This can be seen in the Risk Management section below.

Functional Decomposition

Functional Decomposition

Functional Decomposition

Here is a link to document. Update pending.

Benchmarking

Benchmarking Document

Concept Development

Pugh Charts

Pugh Charts

Here is a link to the Excel file containing our various Pugh Charts.

Feasibility: Prototyping, Analysis, Simulation

Device Weight Testing: Based on the weight of the current sensors we have for feasibility testing and current physical prototype we determined that our device should be no more than .35 kg. In order to determine if this weight was acceptable Elizabeth will wear the prototype with weight attached for 3.5 hours to determine if the device was comfortable at this weight.

Electrical Testing Motion: Put all of the sensors through the same motion patterns and then analyze which sensor give the best output. Sensors also tested in different modes.

Electrical Testing EMG: Compare EMG data to a known reliable source of EMG data

Morphological Chart and Concept Selection

Morphogical Chart

Morphogical Chart

Here is a link to our document.

Concept Selection

Criteria: For decisions on concept selection, each criteria was assigned at number 0.5 (Least important)-1.5 (Critical) based off of deliverables.

Designs and Flowcharts

Overall Schematic

Overall Schematic

The image above shows an idea of how we see the flow of the overall design.
Bluetooth Communication

Bluetooth Communication

CAD Design for Concept Selection

CAD Design of Final Product

CAD Design of Final Product

Risk Assessment

Risk Assessment and Mitigation

Risk Assessment and Mitigation

Here is a link to our document.

Design Review Materials

Here is the link for our Phase II review presentation.

Plans for next phase

Here is the link for the updated project plan for the next 3 weeks including individual plans for each member. The overall project plan is the first tab while the individual plans are in different tabs


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