Ionic Fluid Detection System For Absorbent Articles

摘要

An ionic fluid detection system for absorbent articles has a radiofrequency receiver operable to receive a first radiofrequency signal, a radiofrequency emitter connected to the receiver and operable to emit a second radiofrequency signal, the emitter being responsive to the receiver to emit a second radiofrequency signal when the receiver receives the first radiofrequency signal, the responsiveness of the emitter being enabled when the sensor is in a first wetness condition selected from the group of conditions including “wet” and “dry” and being disabled when in the other wetness condition. The second radiofrequency signal may have a different frequency and wavelength than the first radiofrequency signal. The radiofrequency receiver may be electrically connected to the radiofrequency emitter by a diode to form a resonant antennae pair. There may be a ground plane and a nonconductive, ionic fluid wicking material connected to the ground plane and the receiver and/or the emitter.

主权项

1. An ionic fluid sensor comprising:
a radiofrequency receiver operable to receive a first radiofrequency signal; a radiofrequency emitter connected to the receiver and operable to emit a second radiofrequency signal; the emitter being responsive to the receiver to emit a second radiofrequency signal when the receiver receives the first radiofrequency signal; the responsiveness of the emitter being enabled when the sensor is in a first wetness condition selected from the group of conditions including “wet” and “dry” and being disabled when in the other wetness condition.