Electrogalvanic-powered diaper wetness sensor

Abstract

An electrical wetness sensor powered by the electrogalvanic action of an anode, a cathode and an electrolyte. In the preferred embodiment the electrolyte is urine and the device is used to warn of incontinence. This device contains the following features: sensitivity to wetness; electrical battery-less operation; hermetic and permanent sealing; no-maintenance operation; portability, inexpensiveness, and disposableness. The alarm unit may be configured to produce a visual and/or audible signal. In the preferred embodiment the alarm unit transmits a signal to a remote FM radio receiver or dedicated device to announce incontinence. Incontinence is announced by a tone, visual signal, silencing of the radio station the receiver is tuned to, or activation of a microphone within the alarm unit to allow remote listening. Any or all of these indications may be designed into the device and are discussed.

Dependencies are inferred from the claim text.