Research:Study Notes on Pressure Sensors and Applications in Athletic Performance

Connection of Light Bulb to a Battery

• Experiment begin with a light bulb connected to a battery.

  • When the button is pressed, the light bulb turns on.

  • The brightness of the light bulb increases when pressed harder.

Pressure Sensitivity in Sensing Devices

• Increasing the area of contact by using two fingers leads to a brighter light.

Student Experimentation by Dora

• Student Dora utilized her body to experiment with a pressure sensing device.

  • Body Placement Tests:

  • Under Nose: Detected breathing.

  • On Neck: Detected vibrations from voice.

  • Pulse Measurement: Measured heart rate by placing on wrist.

  • Side of Mouth: Sensed feedback when smiling.

  • By Eye: Responded to blinking.

  • Between Eyes: Reacted to various facial expressions.

  • Clapping Hands: Detected clapping sounds and vibrations.

  • Finger Bending: Registered motion and force upon bending fingers.

  • Foot Testing:

    • Barefoot vs. Soft-soled Shoe: Higher pressure when jumping barefoot compared to soft-soled shoes.

    • Hard-soled Shoe: Higher pressure in comparison between barefoot and hard-soled shoes.

  • Conclusion from Foot Testing: Different footwear affects pressure response under load.

Experiments with Tennis Racket

• Instructor's favorite experiment involved attaching the device to a tennis racket.

  • Setup:

  • Device was connected to a wireless communication set that relays information to a computer.

  • Experiment was conducted at a tennis club using a ball machine.

  • Data Recording:

  • Vibrations at the point of contact between racket and tennis ball were measured.

  • Similar responses were observed for identical strokes but differing responses for different stroke types (e.g., backhand slice).

  • Implications of Data Collected: Different strokes and their corresponding vibrations could be used for analysis.

  • Potential development of machine learning algorithms to evaluate and enhance athletic performance.

Future Applications of Pressure Sensors and AI

• Sensors could be implemented in helmets to monitor impacts that lead to concussions.

  • Concussion Detection:

  • Immediate alerts for severe impacts that require medical attention.

  • Differentiation between serious and minor hits using sensor data.

Research on Carbon Nanotubes

• Challenges in working with carbon nanotubes highlighted, including:

  • Properties: Carbon nanotubes demonstrate unique properties useful in the creation of sensors.

  • Conjugated Polymers Interaction: Enhances solubility and facilitates coupling with the sensitivity of the sensors.

  • Customization of Conductivity: The ability to select types of carbon nanotubes based on their electrical characteristics.

Acknowledgments

• Contributions of team acknowledged.

  • Emphasis on the work done by graduate and undergraduate students, particularly Dora Yun.

• Recognition of funding sources supporting the projects.