A method for improving recognition of lying postures using a measured signal intensity of respiration and heartbeat

Abstract

We describe a method for improving recognition of lying postures using a measured signal intensity of respiration and heartbeat. We have proposed a measurement method of lying posture, respiration, and heartbeat using a Smart Rubber sensor, a rubber-based flexible tactile sensor sheet developed by us. We can obtain respiration and heartbeat by means of using the time series data of the body pressure measured at the suitable location determined by lying posture in this measurement method. Therefore, a recognition rate of lying postures and a measured signal intensity of respiration and heartbeat have positive correlation. In the experiments, we show that recognition of lying postures is improved by means of using a measured signal intensity of respiration and heartbeat.

Keywords

• unconstrained measurement
• lying posture
• respiration
• heartbeat
• rubber-based flexible tactile sensor sheet