Method and system for volume estimation of bodily outputs in absorbent articles

An incontinence monitoring system for estimating a volume of a bodily output received in a combination absorbent article and wetness sensor worn by a subject, the system including:

• a combination of an absorbent article and a wetness sensor for wearing by a subject;
• a processor adapted to receive an input representative of a measured electrical variable of the wetness sensor indicative of the occurrence of a bodily output in the absorbent article and to process the input including:
• characterising the input by extracting data from the electrical variable to generate a vector that is representative of the bodily output, the vector being comprised of data indicative of a plurality of different properties of the electrical variable;
• applying one or more functions to the vector to generate one or more possible volumes of the bodily output;
• applying a distribution function by allocating the possible volumes into bins representing different volumes, wherein the distribution includes one or more bins each adapted to contain a count of multiple occurrences of the possible volumes;
• and
• estimating a volume for the bodily output based on the distribution of the possible volumes in the bins.