ASYMMETRIC GAIN OF CAPACITIVE SENSORS FOR MEASURING PHYSIOLOGICAL PARAMETERS

摘要

Systems, methods, sensors, and software for providing enhanced measurement and correction of physiological data are provided herein. In one example, a capacitive sensor of a measurement system is positioned onto tissue of a patient. The capacitive sensor includes one or more conductive elements with associated gain properties that are positioned near optical sensor elements proximate to the tissue of the patient, the optical sensor elements positioned to measure a photoplethysmogram (PPG) for the tissue. The measurement system drives the capacitive sensor and measures capacitance signals associated with the capacitance sensor. The measurement system corrects for at least motion noise in the PPG using the capacitance signals.

主权项

1. A physiological sensor configured to be positioned onto tissue of a patient, the sensor comprising:
a first conductive element with an associated first gain property and disposed about an optical emitter; a second conductive element with an associated second gain property and disposed about an optical detector; and a sensor body coupled to the first conductive element and the second conductive element and configured to interface with tissue of the patient.