This paper presents the concept, design and development of a novel flexible pressure sensitive mat using infrared proximity sensors and a compressible material layer. The system consists of sensors arranged in a matrix, on a flexible printed circuit board, covered with an elastic layer of silicone rubber including a cavity for each individual sensor. Finite element simulations suggest a linear deformation with increasing applied pressure. Experiments on a prototype implementation confirm these results and illustrate a linear response with low noise. Finally, it is demonstrated that the system is able to recover breathing rate, indicating its suitability for patient monitoring applications.

Additional Metadata
Keywords breathing rate, measurement, Pressure Sensitive Mat, proximity sensor
Persistent URL dx.doi.org/10.1109/I2MTC.2018.8409859
Conference 2018 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2018
Citation
Selzler, R. (Roger), Green, J.R. (James R.), Goubran, R, & Knoefel, F. (Frank). (2018). Developing a pressure sensitive mat using proximity sensors for vital sign monitoring. In I2MTC 2018 - 2018 IEEE International Instrumentation and Measurement Technology Conference: Discovering New Horizons in Instrumentation and Measurement, Proceedings (pp. 1–5). doi:10.1109/I2MTC.2018.8409859