Recent advancements in conductive yarns and fabrication technologies offer exciting opportunities to design and knit seamless garments equipped with sensors for biomedical applications. In this paper, we discuss the design and application of a wearable strain sensor, which can be used for biomedical monitoring such as contraction, respiration, or limb movements. The system takes advantage of the intensity variations of the backscattered power (RSSI) from an inductively-coupled RFID tag under physical stretching. First, we describe the antenna design along with the modeling of the sheet impedance, which characterizes the conductive textile. Experimental results with custom fabricated prototypes showed good agreement with the numerical simulation of input impedance and radiation pattern. Finally, the wearable sensor has been applied for infant breathing monitoring using a medical programmable mannequin. A machine learning technique has been developed and applied to post-process the RSSI data, and the results show that breathing and non-breathing patterns can be successfully classified.
Her research interest is understanding how technology can be used to improve K-12 mathematics education. She is interested in developing applications for classroom use that factor the computational resource limitations of urban public schools. Her future research will investigate methods for computer scientists to collaborate with educators to improve K-12 as well as computer science education. William Mongan, Drexel University Bill Mongan is a Ph.D. student at Drexel University in the Department of Computer Science. Concurrently, Bill is pursuing an MS in Science of Instruction in the School of Education at Drexel, with a concentration in Secondary Mathematics and Computer Science in Pennsylvania. His interests include educational outreach and for exposing the K-12 environment to computer science as an application of science, technology, math and engineering (STEM) education. Prior to studying at Drexel, Bill worked for the Upper Darby School District, working with students on both an educational and volunteer basis in the AP Computer Science program from 2002-2004. He has served on the UDSD School Board Technology and Grant committee in 2001, and interviewed for a vacant UDSD School Board seat in 2000.
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