P19095: LiveAbility Lab

Customer Handoff & Final Project Documentation

Table of Contents

Team Vision for Final Demo and Handoff

For the final phase of our project, our team goal was to address the last few issues with our design and to make improvements based on feedback from our integrated system review. These activities included creating a cron script for automatic start up, displaying force and location data on a user friendly device, using a more robust switch to power on the system, and to modify the packaging to make it more user friendly, aesthetically pleasing, and secure. At the conclusion of this phase, we have accomplished a functioning cron script to automate system start-up, force and location data displayed in real time on a desktop or laptop, and a new packaging layout that incorporates a new switch, an ethernet port for force sensor replacement, and access to the micro USB port for system charging. This robust device satisfies our customer requirements by displaying real-time force and location data of an individual's footsteps wirelessly while providing minimal interference with the individuals natural gait and lifestyle.

Final Project Status

System Schematics
Exploded View of Packaging and All Components

Exploded View of Packaging and All Components

Assembly of All Components

Assembly of All Components

Final BOM

Final Bill of Materials

Final Bill of Materials

Test Results Summary

Location Measurements and Accuracy

System measured location at several known points within a 2.58 m x 5.58 m space. The DWM module output was compared against the known coordinates, and it was found that the DWM measured location with an average accuracy of 2.83 cm, with a maximum deviation of 15 cm at one point. There was significant noise in these measurements, but the average value measured at each point increases the accuracy significantly.

Force Measurements and Accuracy

System measured up to 220 lbs ± 5 while system was fully configured and the A301 force sensor was integrated into a shoe insert (Left). Up to 500 lbs of direct force was measured by the force sensors in a laboratory setting (Right).

Force Sensor on User and in Lab

Force Sensor on User and in Lab

Data Processing and Wireless Transmission

Data from the force sensor, DWM location module, and accelerometer was sent in real-time via bluetooth from the raspberry pi to a laptop or desktop. This data was recorded anywhere from 3-10 samples per second and can be changed as needed.

System Size and Weight

Our final packaging has dimensions of 3.25" x 1.5" x 5.5" and weighs just under 7.2 ounces, which satisfies our 9 ounce maximum weight requirement.

Completed Test Plan Document

Completed Test Plan Document

Risk and Problem Tracking

Risk Management
Risk Management Snapshot 12/2/19

Risk Management Snapshot 12/2/19

While there existed many risks in designing this monitoring system, the likelihood of any risk becoming a new problem dropped to zero as the design neared its final stages development.

Problem Tracking

Problem Tracking Snapshot 12/2/19

Problem Tracking Snapshot 12/2/19

Multiple issues cropped up during the physical creation of this senior design project. By tackling each as soon as they appeared, each problem was solved before development could be delayed.

Final Project Documentation

Final Paper and Poster

Our final Paper and Poster illustrate the final state of our project, our testing process, and our results.

Instructions and User Guides

Our User Guide contains instructions on Assembly, Start-Up & Use, and Software Set-up and Requirements.

Recommendations for Future Work

Our recommended future work for this project includes the following.

Plans for Wrap-up

The following items still need to be addressed in the next week. All team members will work together to complete these items.

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