Integrated System Build & Test
Table of Contents
Team Vision for Integrated System Build & Test PhaseSummary:
- In this phase, the final device was assembled and is completely ready be worn on the arm for testing purposes. Arduino was installed onto the newly printed 3D case. Both accelerometer sensors along with both of the MyoWare EMG sensors have been connected to the Arduino in order to collect data and process it with Matlab.
- Backend server program along with a client program has been implemented to store the sensor data in the cloud storage. Backend program handles the server calls to store the data into the database, create new patients, and fetch data for a specific test patient.
Device Assembly and Components
The above image represents our final and completed design. A large percentage of the final device consists of purchased parts. The final device electronically consists of an Arduino Mega, 2 Myoware EMG sensors, and 2 Adafruit BNO055 9 DOF sensors. Besides the device is comprised of a purchased Head racquetball glove and an armband designed to hold a phone while jogging. This specific glove was selected by our team as it was adjustable, comfortable, and easy to sew. The glove material was also stiff enough to reduce excess unwanted motion caused by the weight of the attached sensor. The armband was selected based on the same criteria as the glove with the addition that the selected band could hold a battery pack if in the future this project became tether-less.
In addition to the purchased parts, the device consisted of several 3D printed components. All 3D printed parts utilized within this project were printed in PLA through a friend of the team's printer. This 3d party printer was used as it produced higher quality parts than what was possible with the construct printers. The final 3D printed parts included: a sensor base sewn to the hand, a cover for the hand sensor, a sensor base strapped to the wrist, a case for the wrist sensor, an electronic base sewn to the armband, and a case for the components attached to the arm. The bases that were fabricated for this project contain countersunk holes that allow the sensors and electronics to be fastened to the top of the base using machine screws, bolts, and washers without the screws being intrusive. The cases used within the final design slide onto the bases and are kept in place using the bases geometry.
Upon final assembly of the device, all sensors were wired to the device using flexible black wire. This was to allow the device to not interfere with motion and to help prevent pullout of wires and the breaking of soldered connections. All wire clusters were zip tied together to reduce the number of loose wires.
Test Results Summary
Risk and Problem Tracking
Vision for Imagine RITWe will demonstrate our working prototype to the public through a video, and throughout the day run a live functional demo of the device. Specifically, we will have a team member go through examples of motions done during a WHITGET test. The process will demonstrate the capabilities of the DAQ system (both motion and EMG). The data will be processed via MATLAB and displayed on a TV or monitor. Throughout the day, at least two team members will be present at the booth, and we will rotate between volunteers every two hours. With our demo, we will also display our team poster on our table. This will further explain the background of the project, design features, and testing. Lastly, we will hand out project overview sheets that will highlight the features of our project. This sheet will include a QR code that will direct our visitors to our Edge site for further information. We will also share a space with the other Essential Tremor Mitigation Teams.
Plans for next phase
- The project planner and plans for next phase is found in the document here: Project Planner.