A non-constraint cardiac vibration, respiration, and body movement monitoring system has been developed. The sensor system is designed to be easily installable under an existing bed mattress. The ...

A light intensity-modulated optical fiber sensor for continuous level measurement is proposed and demonstrated. The sensor is constructed by vertically arranging groups of fibers on the oblique ...

San josé et al. (2005b) showed that bed voidage on the axis of the spout and fountain decreases with bed level and bed voidage in the fountain core decreases radially from the axis to the ...