Impedance sensors for detecting and monitoring moisture in absorbent articles

摘要

According to aspects of the present disclosure, a system for detecting moisture in an absorbent article worn by a wearer may include an impedance sensing element. The impedance sensing element may include electrodes. The system may also include an attachment member for securing the impedance sensing element at a location on an exterior surface of the absorbent article. The electrodes may be positioned so as to be capacitively coupled to an interior region of the absorbent article and to measure an impedance of the absorbent article from the location on the exterior surface of the absorbent article. The system may also include an impedance measurement subsystem for measuring the impedance of the absorbent article, and extracting a real component of the impedance and an imaginary component of the impedance for determining a characteristic of the moisture in the absorbent article.