Patent ID: 9377353
Filing Date: 2016-06-28
CPC Classification: A61B,G01J,G01N

Claim Text:
1. A system comprising: a battery to supply power to the system; an enclosure that houses the system, the enclosure having a wearable form factor and surfaces defining an aperture; a first waveguide, wherein the aperture of the enclosure exposes at least one surface of the first waveguide; a first photodetector coupled to the first waveguide; a measurement stage to receive an electrical measurement signal from the first photodetector; a second waveguide; a second photodetector coupled to the second waveguide; a control stage coupled to the second photodetector, the control stage to receive an electrical control signal from the second photodetector; an intensity quantifier coupled to the measurement stage and to the control stage, the intensity quantifier to determine a total intensity level of reflected light in the first waveguide based on the electrical measurement signal and on the electrical control signal; and a perspiration quantifier coupled to the intensity quantifier, the perspiration quantifier to determine a perspiration level of skin in contact with the first waveguide based on the total intensity level of the reflected light.