Abstract: Presented are embodiments of an apparatus and methodology for non-invasive, continuous or semi-continuous monitoring of human blood pressure by photoplethysmography (PPG) based sensor system.

Abstract: There is disclosed a respiration rate monitoring system and method using a non-invasive device and method of monitoring it nearly continuously. One aspect includes receiving a series of signal data points from an optical sensor, detecting a series of peaks or valleys for the filtered signal data points, determining the time difference between individual peaks or valleys of the series of peaks or valleys to produce a series of time difference values, detecting peaks or valleys for the series of time difference values, determining widths between the peaks or valleys of the series of time difference values, and estimating a respiration rate from the widths between the peaks or valleys of the series of time difference values, and converting the estimation of a respiration rate to an indicator indicative of a respiration rate.

Abstract: Presented are embodiments of an apparatus and methodology integrated in the system for non-invasive, continuous, wearable, remote and mobile monitoring of human blood pressure by photoplethysmography (PPG) based sensor and an electronic processing unit with the embedded radio allowing the reading and transmittal of the read blood pressure data to the remote location.

Abstract: Disclosed is a PPG signal measurement apparatus comprising a light source for emitting light pulses; a light sensor for receiving reflected light from the light source and generating a sensor signal; an electronic unit including a transimpedance amplifier and an ambient light cancelation unit, a first switch in a front end portion of the light sensor, a second switch in the front end portion of the light sensor, a microcontroller in communication with the light source, the light sensor, and the ambient light cancellation unit.