Category: 2023 Spring Final Reports

Final Goals of your project/s:

– Create a force-sensing controller for the Joint AR prototype.
– Document development and testing of the force sensing in a controls trade study to give to xEVA vendors (axiom, collins).
– Perform testing in the B7 glovebox to determine usability in a pressurized environment.

Describe what you did during the internship:

I created the Joint AR force sensing controls are in development for use in the Joint AR system as a way of UI manipulation. The force-sensing controls use force-sensitive resistors that measure the force a user outputs as a voltage through the resistor. This setup allows for variable force control that can be used completely internal to the suit and is versatile to the point where it can be used freehand or on various places around the suit, such as the opposite forearm or the same side thigh.

The force sensing controls utilized 3 force sensing resistors with 3D printed “pucks” on top of them. These pucks make it, so pressure doesn’t just deform the sensor into the finger of the subject. They also help to provide more accurate data on the force outputs.

Input commands for the short press and the short hold are relatively fast commands. In terms of versatility, the controller can be activated at any point and can be operated with only one hand. This means you have one hand to carry tools or tethers, while the other is used to cycle through procedures, while the physical hand controller requires both arms to be in use. Lastly, the ease of use. As stated earlier this control method can be activated anywhere using discrete finger movements. The control method is also flexible and offers multiple different methods of control. As of now short presses and long presses are the main 2 methods of control, however, something such as scrolling could be added if necessary.

The uncertainty of command activation stems from the lack of haptic feedback in the system. This leaves the user feeling unsure of whether the commands are actually reading or not. This has a simple solution of either integrating the piezo board, or a small vibration motor. This small fix would give the user much more confidence while using the system.

Sensor placement is the second notable problem for the controller. On this fabric, the sensors tend to shift around on the glove since they aren’t fixed by anything but hot glue or electric tape. This leads to the user having sensors slide down to the middle of the finger, which is much more uncomfortable. Two solutions exist that we have thought of so far. The first would be adding holes in the puck on the outer shell, meaning that we could sew the puck into the glove and have the sensors adhered to the surface of the puck. The other would be using something similar to EKG sensor adhesion strips, that way the sensors are adhered directly to the skin and fixed before getting into the suit.

Lastly, the activation sequence speed is another, fixable problem. Ideas for fixing the activation/deactivation speed would be decreasing the number of commands to input to activate the system. This could be done through repeated HITL testing, attempting to find a unique set of 2-3 commands while still minimizing false activations. Other ideas would be RFID/NFC activation or lighthouse activation on different body parts.

Moving forward with the force sensing controls, the next logical step would be integrating haptic feedback into a higher fidelity prototype. After that, likely full stack testing, ARGOS testing, and potentially NBL testing would help validate the system and show us more of the problems that won’t be seen unless that testing is done.

Did you achieve your goals? What were the results?

All goals were achieved. The result was an alternative control system that could be used to control the prototype. The team also learned a lot about potential variables that could affect other control methods, and we gathered good testing data and testing procedures that can be used for every test to form a comparative set of data.

Describe positive lessons learned:

– Minimize design variables to test other design variables
– Prototype quickly and learn as much as you can from each iteration
– Success isn’t cut and dry, sometimes success criteria can change.

Describe negative lessons learned:

– Remote work can be a bit tough, you have to find the right hours.

Final Goals of your project/s:

Our lab works on flight software for exercise equipment on ISS and upcoming Artemis missions. We worked on modernizing the ISS treadmill user interface, developing new markerless motion capture recording suites, and certifying a new agility device for flight to the ISS. Some other projects in the lab worked with the ARGOS team, the Advanced Resistive Exercise Device, and the Artemis Flywheel project.

Describe what you did during the internship:

MARKERLESS MOTION CAPTURE
– Developed new system to analyze human motion without markers
– Connect to, record, pull data, and process GoPro camera footage
– Use Stanford’s OpenCap system to analyze inverse kinematics

T2 REDESIGN
– Assist in new storyboards for user interface
– Provide feedback and suggest new UI elements
– Work with T2 team to develop project plans and timelines

WOBBLEBOARD
– Assisted a VR game to help practice agility
– Worked with the ISS program to establish a flight plan.

Did you achieve your goals? What were the results?

We worked hard to make advancements on the projects we have open. This semester, there were no firm deadlines on our projects, so we focused on preparing for the new team to pick up in the summer when we finally hit some deliverables. We achieved the goal of advancing our projects and preparing for the future.

Describe positive lessons learned:

I learned a lot about project management, procedures for certifying for flight, and all the subsystems that work together to make human spaceflight possible. Before my experience here, I knew that spaceflight was difficult, but now I have a massive appreciation for every individual’s unique and important positions here and how the puzzle pieces all fit together for a successful mission.

Describe negative lessons learned:

As part of learning the procedures of sending things to space, I now understand the hurdles people regularly face with regard to strict requirements, timelines, and insufficient funding from the government.

Final Goals of your Project/s:

The primary objective of the markerless motion capture environment was to precisely assess individuals’ physical performance during exercise routines. Through the acquisition of a 3-dimensional representation of the human body’s joint angles and force outputs, it becomes possible to track movements with greater accuracy, thereby facilitating the identification and rectification of improper movement patterns.

The central aim of the PSION database restructuring initiative was to enhance the user interface, resulting in a more efficient and self-directed system. This would enable individuals to optimize their workout routines and enjoy a more seamless and gratifying experience overall.

Describe what you did during your internship:

During my internship, I had the opportunity to work on two significant projects. The first project was centered around the development of a cutting-edge markerless motion capture environment, specifically designed to cater to the physical exercise requirements of astronauts. This innovative system enables the collection and analysis of multiple biofeedback data streams, which are then utilized to model the individual, thereby facilitating the enhancement of workout techniques. Our team accomplished a remarkable feat by devising a pipeline that harnessed the wifi capabilities of multiple GoPro cameras. This resulted in the automatic downloading of videos, synchronization of time codes, and integration of joint angles and limb placement into the videos, courtesy of a motion capture system.

The second project, PSION, was primarily focused on the revamping of the frontend software system for all IoT data streams. My role in this project involved mastering the React programming language and utilizing my newfound knowledge to redevelop the Graphical User Interface (GUI). The objective of this initiative was to streamline and optimize the user experience, and I was thrilled to be a part of this transformational undertaking.

Did you achieve your goals? What were the results?:

The objectives of each project were merely incremental steps in the larger plan for these initiatives. Despite making significant progress on both projects and achieving some of our primary goals, there are still numerous additional objectives that need to be met before the projects can be deemed fully completed.

In essence, the markerless motion capture environment and the PSION database restructuring projects served as crucial tools for deepening our understanding of individuals’ needs and challenges, and further stimulating innovative thinking for potential future applications. While there is still much work to be done, the foundation has been laid for the achievement of even greater strides in these areas.

Describe positive lessons learned:

Firstly, I learned the importance of effective communication and teamwork in achieving organizational goals. Working collaboratively with a diverse team of individuals with varying skill sets and backgrounds, I gained invaluable insights into the art of constructive dialogue, the benefits of active listening, and the importance of maintaining a positive attitude even when faced with challenges.

Secondly, I learned to embrace new challenges and take calculated risks in the pursuit of growth and development. My exposure to cutting-edge technologies, such as motion capture and IoT systems, was a steep learning curve, but I was able to rise to the challenge and expand my knowledge base through persistence and hard work.

Lastly, I learned to appreciate the value of time management and organization. Balancing multiple projects, deadlines, and priorities was no mean feat, but with careful planning and efficient use of time, I was able to remain focused and productive throughout my internship.

Overall, my internship experience has been incredibly rewarding, providing me with practical skills and knowledge that I can carry forward into my future endeavors.

Describe negative lessons learned:

One of the main negative lessons was the need to manage expectations effectively. While it is important to set ambitious goals, it is equally important to ensure that these goals are achievable within the given time frame and resources. On certain occasions, I found myself struggling to meet unrealistic expectations and timelines, leading to feelings of frustration and disappointment.

Another negative lesson that I learned was the need to be resilient in the face of failure or setbacks. Despite my best efforts, there were instances where things did not go as planned, or I made mistakes that resulted in unfavorable outcomes. However, through these experiences, I learned to accept failure as a natural part of the learning process, and to view setbacks as opportunities for growth and improvement.

Overall, the negative lessons I learned during my internship have provided me with valuable insights into the importance of effective expectation management, resilience, and self-care in achieving success and maintaining well-being.