Determining diaper loading using color detection or activity state

A system for determining a volume of bodily exudate in an absorbent article, the system comprising:

• a photodetector;
• an inertial sensor;
• and
• a processor that is configured to:
• obtain, from the photodetector, a measurement of transmitted light reflected from the absorbent article;
• determine, from the measurement of transmitted light, a presence of bodily exudate in the absorbent article;
• obtain, from an inertial sensor, a time series of data including an inertial measurement for each time period of a set of time periods;
• determine, in real time from the time series of data, an activity state of an infant wearing the absorbent article, wherein the activity state comprises being awake or being asleep;
• and
• determine, based on the presence of bodily exudate and the activity state, a degree of fullness of the absorbent article.

A non-transitory computer-readable storage medium storing computer-executable program instructions, wherein when executed by a processing device, the computer-executable program instructions cause the processing device to perform operations comprising:

• obtaining, from a photodetector, a measurement of transmitted light reflected from an absorbent article;
• determining, from the measurement of transmitted light, a presence of bodily exudate in the absorbent article;
• obtaining, from an inertial sensor, a time series of data including an inertial measurement for each time period of a set of time periods;
• determining, in real time from the time series of data, an activity state of an infant wearing the absorbent article, wherein the activity state comprises being awake or being asleep;
• and
• determining, based on the presence of bodily exudate and the activity state, a degree of fullness of the absorbent article.