07.28.23
Brian Schiffer, San Francisco, CA; Tushar Parlikar, Somerville, MA; and Brian Ward Guilardi, San Jose, CA.
Assigned to Verily Life Sciences LLC South San Francisco, CA.
Filed: 4/12/19
Issued: 6/20/23
A method for predicting a loading of an absorbent article, the method comprising: obtaining a first measurement of ambient light received from a photodetector while a light source is off; obtaining a second measurement from the photodetector while the light source is transmitting light, the second measurement comprising a measurement of the ambient light and the transmitted light reflected from the absorbent article; determining a normalized measurement of light reflected from an absorbent article by removing an ambient light signal from the second measurement based on the first measurement of ambient light; determining, from the normalized measurement of light, a presence of urine in the absorbent article; determining, from a time series of data including an inertial measurement for each of a set of time periods, an activity state of an infant wearing the absorbent article; and determining a degree of fullness of the absorbent article, wherein the determining is based on (i) an elapsed time since the determination of the presence of urine and (ii) the activity state.
Assigned to Verily Life Sciences LLC South San Francisco, CA.
Filed: 4/12/19
Issued: 6/20/23
A method for predicting a loading of an absorbent article, the method comprising: obtaining a first measurement of ambient light received from a photodetector while a light source is off; obtaining a second measurement from the photodetector while the light source is transmitting light, the second measurement comprising a measurement of the ambient light and the transmitted light reflected from the absorbent article; determining a normalized measurement of light reflected from an absorbent article by removing an ambient light signal from the second measurement based on the first measurement of ambient light; determining, from the normalized measurement of light, a presence of urine in the absorbent article; determining, from a time series of data including an inertial measurement for each of a set of time periods, an activity state of an infant wearing the absorbent article; and determining a degree of fullness of the absorbent article, wherein the determining is based on (i) an elapsed time since the determination of the presence of urine and (ii) the activity state.