UROP Proceedings 2022-23

School of Engineering Department of Electronic and Computer Engineering 141 Development of Bioinspired Tactile Sensor Supervisor: SHEN, Yajing / ECE Student: CHANG, Hong-yuan / DSCT Course: UROP1100, Spring Poor teeth-brushing habit is the main reason behind various oral diseases, including cavity and periodontal. Devices allowing users to know their brushing habits can significantly improve public oral health. Recent studies have shown promising results in utilizing smart toothbrushes equipped with inertial and force sensors to monitor the brushing force and coverage. Yet, the accuracy of current devices is low which hinders their practical usage. In this project, we proposed a novel smart toothbrush that is equipped with a soft magnetic pillar sensor and inertial measurement unit for better brushing force and brushing coverage monitoring. A smart toothbrush system will be developed including a wireless smart toothbrush, a data collection platform, and a user interface for data visualization. Development of Bioinspired Tactile Sensor Supervisor: SHEN, Yajing / ECE Student: IYER, Shruthi / CPEG KUMAR, Aarav / SENG Course: UROP1000, Summer UROP1000, Summer The measurement and visualization of human gait is critical to healthcare and rehabilitation. Although several gait analysis systems have been developed based on tactile sensor with different transduction methods, visualizing the three-dimensional force distribution remains a challenge. In this project, our tactile sensor aims to analyze the one-dimensional normal force and two-dimensional shear force using a custom piezoresistive pressure sensor and vision-based marker tracking method. Currently, a new marker layer was developed with scale of 8 x 8 for the marker tracking method to detect the input force and the code was modified to successfully detect all the nodes with their coordinates which completes the groundwork of marker tracking strategy and providing all necessary components for future development. Additionally, several materials were analyzed for the piezoresistive sensor whose conclusion led to a list of potential candidates, along with designing and producing a container for the latter. The future development will consist of testing out the materials from the list, developing the displacement vector to measure sheer force and testing the developed sensing container.