OPTICAL VITAL SIGNS SENSOR

摘要

An optical vital signs sensor is provided which comprises at least one light source with a primary and a secondary light unit and a photo detector, a motion sensor configured to detect a motion of a user, a periodicity metric unit to analyze an output signal of the at least one motion sensor to detect a periodicity in its output signal and a control unit configured to control an operation of the at least one primary and secondary light unit and to activate the at least one secondary light unit in addition to the at least one primary light unit when the periodicity metric unit does not detect a periodicity in the output signal of the motion sensor.

主权项

1. An optical vital signs sensor, comprising:
at least one light source having at least one primary and at least one secondary light unit each being configured to generate light, which is directed towards a skin of a user, said primary light unit being activated when the optical vital signs sensor is switched on, at least one photo detector unit having at least one photo diode configured to detect light which is indicative of a transmission or reflection of the light from the at least one primary and at least one secondary light unit in or from the skin of the user, at least one motion sensor configured to detect a motion of the user, a periodicity metric unit configured to analyze an output signal of the at least one motion sensor to detect a periodicity of the output signal, and a control unit configured to control an operation of the at least one primary and secondary light unit, wherein the control unit is configured to activate the at least one secondary light unit in addition to the at least one primary light unit when the periodicity metric unit does not detect a periodicity in the output signal of the motion sensor.